US589282A - Weighing-machine - Google Patents

Description

(No Model.) 6 SheetsSheet 1. F. H. RICHARDS. WEIGHING MACHINE.

No. 589,282. Patented Aug. 31,1897.

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WEIGHING MACHINE.

No. 589,282. Patented Aug. 31,1897.

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WEIGHING MACHINE.

No. 589,282. Patented Aug. 31,1897.

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(No Model.) 6 Sheets-Sheet 4. P. H. RICHARDS.

WEIGHING MACHINE.

No. 589,282. Patented Aug. 31,1897.

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No. 589,282. Patented Aug 31,1897,

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6 Sheets-Sheet 6.

(No Model.)

P. H. RICHARDS. WEIGHING MACHINE.

No. 589,282. Patented Aug. 31,1897,

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UNITED STATES PATENT Critics.

FRANCIS lI. RICHARDS, OF HARTFORD, CONNECTICUT.

WElGHlNG-MACHINE.

'SPECIFIC TION forming part of Letters Patent No. 589,282, dated August 81, 1897.

Application filed February 5, 1897. Serial No. 622,101. (No model.)

To ctZZ whom, it 12mg coaccivt- Be itkn own that I, FRANCIS H. Rleiuuos, a citizen of the United States, residing at llartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in \Veighing-llachines, of which the following is a specification.

This invention relates to weighing machines of the type disclosed by Letters Patent No. 572,067, granted to me November 2%, 1896, one of the objects of the invention being to provide improved and efficient overloading and load-reducing means, preferably automatically operative in the order named dur in g the weighing of a load.

Another object of this invention is to furnish improved mechanism for actuating the stream-controller, such mechanism comprehending in the present case a regulator in the form of an oscillatory hopper which is situated beneath the load-receiver and is adapted to receive and temporarily contain the contents thereof, said regulator constitut ing an actuator for the stream-controller, the means for transferring the power of said regulator to the stream-controller being preferably automatically governed; and instrumentalities are also provided to momentarily lock the regulator in its depressed position, so

that it can be completely emptied before the stream-controller is operated.

Another object of the invention is to furnish an improved beam system consisting of a pair of scale-beams having a rocking joint therebetween and a link attached to said beams, such organization insuring the simultaneous movement of said beams as the loadreceiver reciprocates.

In the drawings accompanying and forming part of this specification, Figure 1 is a rear elevation of a weighing-machine embodying my present improvements. Figs. 2, 3, 4, and 5 are end elevations of the machine as seen from the right in Fig. 1, and they illustrate the positions occupied by the respective parts during the making and discharging of. a load. Fig. 6 is a detail view, in central vertical section, of the overloading and load-reducing means and an auxiliary load-receptacle. Fig. 7 is a detail view of the latch and its tripper. Fig. 8 is a detail view of the actuating mechanism for the stream-controller and parts adjacent thereof, and Fig. 9 is a perspective view of. the beam mechanism.

Similar characters designate like parts in all the figures of the drawings.

The framework forsupporting the various parts of the machine may be of any suitable or preferred form, it com prising in the present case the chambered bed or base 2, the end frames or columns 3 and at, which rise therefrom, and the brackets 5 and (5, which extend oppositely from the supply hopper or chute H, said parts being connected in some wellknown manner.

The supply hopper or chute ll, in connection with a suitable stream-controller, constitutes a convenient means for overloading the load-receiver, as will hereinafter appear.

The weighing mechanism consists of a loadreceiver, as G, which is single-chambered, and a plurality of supporting scale-beams therefor, two of such scale-beams being represented and being designated by B and B, respectively. Each of the sealebeams consists of a pair of longitudinal arms joined at the rear by a combined weight and connecting shaft.

The arms of the scalebeam B are designated by 7 and 7, respectively, (see Fig. 9,) the similar arms of the beam B being denoted by 8 and 8, respectively, and the two weights being reprcsen ted by \V and XV, respectively.

The two beams B and B are fulcrumed or pivotally supported upon the base or bed 2, as is usual, and the respective arms thereof are furnished with supports for the load-receiver located between the beam-supports.

For the purpose of insuring a movement of the two beams in unison as the load receiver reciprocates I provide a rocking joint between the same and prefer to connect them by a suitable link or links, two of such links, of leather or analogous flexible material, being shown.

The two arms 7 and S are connected by a link or strap 9, and the arms 7 and S are connected by the strap or link 10, the points of attachment of the two links being crosswise or reversethat is to say, the link 10is fixed to the upper side of the arm 8 and to the lower side of the arm 7, while the opposite link 9 is attached to the upper side of the arm 7 and the lower side of the arm 8. The inner or adjacent ends of the several beamdischarge of a bucket-load, and it also has the guard walls or flanges 13 and 13 (see Fig. 1) for preventing lateral How of the material when the load is discharged.

The means for controlling the discharge from the load-receiver includes a latch which is adapted to engage a member connected with the closer L, such as the crank-arm 14, extending from the rock-shaft15, that passes entirely through the bucket, said shaft being furnished at the end thereof opposite to that having the crank-arm 1-1: with the skeleton or open segment 16, to one branch of which is pivoted the connecting-rod 17, said rod being also jointed to the closer L.

The latch that normally engages the crankarni l-t to hold the closer shut is designated by L, it being eounterweighted and the working arm 18 thereof swinging upward to engage said crank-arm. The latch-arm 18 has a suitable shoulder or stop, as 18, against which the operating-arm ll is adapted normally to abut.

It is evident that by lifting the weighted arm 19 of the latch L the opposite arm thereof is lowered to disengage it from the crank-arm 14 to effect the release of the closer L, which operation takingplace the latter-can be forced open by the weight of the charge within the load-receiver. The action of the latch L is suitably limited by properly-positioned stops on the bucket, as is usual. (See Fig. 7.)

To obtain a correct load in the load-receiver G, a supply of material in excess ofthat determined upon for the requisite or true charge will be conducted to said load-receiver, which causes the latter to descend to a point some what below the so-called poising-line. At a predetermined point in the movement of the bucket or when it has almost reached the end of its downstroke the load-reducing means will be called into requisition for removing the surplus or excess from the loadreceiver, the material that is withdrawn being preferably delivered to an auxiliary receptacle carried on the framework.

The stream-controller for the hopper H in the present case consists of an oscillatory cutoff valve V, which has a reciprocatory move ment beneath the outlet of said hopper to stop or permit the passage of the supply to the load-receiver, said valve being carried by the two-part shai't20, which has journal-openings in its opposite ends for receiving pivotscrews on the brackets 5 and (3, respectively. The valve V is equipped with the weight 21 for closing the same, which weight is attached to the bottom of the valve insome convenient manner and which tends normally to close the same.

On the retracting or opening movement of the stream-controller or valve V to permit the m erload-supply to pass from the hopper ll into the load-receiver G, I provide means for preventing the immediate advancing or shutting of the stream-controller, such means c011- sisting of a stop on the weighing mechanism whereby a stream of relatively large volume can pass from said hopperfor a comparatively long duration of time. The stop for this purpose is designated by 25, it being of the bypass type and pivotally supported near the upper end of the load-receiver, the weighted arm 25 thereof resting on a pin 20 on said load-receiver. The free arm of the bypass stop 25 is disposed in the path of movement of the radial rod 26, that projects from the two-part valve-shaft 20. The operation of these parts will be apparent from an inspection of the several end elevations of the drawings.

When the valve I' is opening, the rod 26, as said valve approaches the end of its stroke, will impinge against and lower the rear or free arm of the by-pass 25, whereby said valve can be fully opened without hindrance. The valve will then shut for a very short distance or until the rod 26 abut-s against the free arm of the by-pas's 25, which thereby prevents its further immediate closure. \Vhen the loadreceiver has passed below the poisingline with the overload-supply therein, the bypass stop 25 will have been carried below the arc of oscillation of the rod 20, thereby releasing the valve, so that it can be promptly shut by the weight 21 thereon.

The load-red ucing means in the present case includes a valve that is reciprocatory below an opening in the bucket, such as the outlet of the load-reducing spout 30 near the upper end of the load-receiver, said valve being designated by 31 and having the laterally-extend ing sleeves 32 and 3-3, (see Fig. 1,) in which are located the pivot-screws 3t and 35, fixed in the opposite walls of the spout 3 A second spent on the load-receiver is shown at 30, located under and in alinement with the spent 30 and the valve 31 and into which the contents of the spent :30 can pour or pass at the conclusion of the weighing operation, as they form a part of the true lead.

A valved auxiliary load-receptacle is repre sented at 37, it being attached to the standard or upright 38, which is fastened to the rear side of the base or bed 2, said auxiliary loadreceptaele being in the form of a storage box or hopper and being intended to receive the overload from the load-receiver, which runs through the spent 30 on the opening of the valve 31 during the weighing of a load, at

IOn.

which time the valve of said hopper is closed to prevent the material. from running therethrough.

The valve for the auxiliary load-receptacle is denoted by 39, and it will be normally shut, so that said auxiliary load-receptacle constitutes a suitable storage device for containing the overload or surplus material withdrawn from the load-receiver G. The means for actuating the valve 39 to open and close the same will be hereinafter described.

The actuator for the loadreducing or auxiliary valve 31 will be preferably connected to the main or overload-controlling valve V for shifting movement, whereby said actuator can be thrown into and out of action. Such actuator is designated by 40, and it consists of a straight arm pivoted to and depending from the bracket 41 on the end frame 3, said arm having a toe or projection 42 at its free end for a purpose that will hereinafter appear. The arm 40, which is intended for opening the auxiliary valve 31, has pivoted thereto the comparatively long link 43, which is likewise attached to the crank-arm 44 on the two-part valve-shaft 20. The longitudinal sleeve 33, that extends from and forms part of the auxiliary valve 81, is provided with the rock-arm 45, having a projection 46 at its outer end which is adapted to cooperate with the similar projection 42 on the actuator or arm 40, to which I have previously referred.

The crankarm 44 and the link 43 constitute a toggle, the several centers thereof being designated by c, c, and c, and they are illustrated out of line in Fig. 2, wherein the valve is shown almost in its wide-open position. In said Fig. 2 the valve V is represented held nearly in its wide-open position by the by-pass stop on the load-receix' er G, which engages the rod 26, the auxiliary valve 31 covering the outlet of the spout 3 to prevent the passage of material from said spout into the auxiliary load-receptacle 37, although the material can trickle into the spout 36 on the load-receiver. The valve V being in the position just mentioned a large stream of material will flow from the hopper H into the load-receiver G to nearly till the same, which will carry the latter down and below the poising-line, thereby freeing the valve by the dropping of the bypass 25 be low the rod 26, as shown in Fig. At this time the projection 46 on the rock-arm 45 will have reached a point in the line of travel of the toe or projection 42 of the actuator or rod 40. The valve V being released and closed by its weight 21 the three centers 0, c, and 0" will be thrown rapidly into line, which results in swinging the arm 40 for a short distance to the left, and when the point 0 has crossed the dead-center line the arm 40 will be swung forcibly inward, so that the projection 42 by impinging against the projection 46 on the rock-arm will open the auxiliary valve 31 to permit a portion of the material within the load-receiver G to pass therefrom through the spout 30 and into the auxiliary load-receptacle 87, the valve of which is closed, as shown in Fig. '0. The lightened load-receiver G will then ascend, and when the excess of material has been removed therefrom the projection 40 will have risen to a point above the coacting projection 42, which results in freeing the auxiliary valve .31, so that it can be quickly shut to stop the withdrawal of material from the load-receiver G, as shown in Fig. 4. For thus shutting the auxiliary valve I provide the weight 50, it being at the outer end of the arm 51 on the valve-sleeve and which exerts a constant valve-closing force. On the opening of the main or overloadcontrolling valve V the reverse action with respect to the arm or actuator 40 will take place. On the completion of the load when the auxiliary valve 31 is shut the material within the spout 31 can readily pass therefrom and enter the spout 36, such material forming a part of the true load and being discharged therewith.

it will be remembered that a latch L has been described for holding the closer L shut during the loading period by engaging the crank-arm 14, that is connected to said closer. The tripper for said latch is designated by 55, and it consists of a roclearm extending from the valve-sleeve 323, and the momentum acquired by the valve 31 in shutting is transmitted to the trippcr 55, so that said tripper by imparting a sudden blow to the weighted arm 19 of the latch will lift the same and will depress the opposite arm 18, as shownin Fig. 7, to effect the release of the closer L. On the tripping of the latch the weighted arm thereof will drop for a short distance and will correspondingly retract the valve to the position shown in Fig. 2, where it can completely cover the outlet of the spout 30. It is to be understood that the weight of the latch L is somewhat heavier than the valveactuating weight 50, the latch being tripped simply through the momentum acquired by the tripper 55 on the accelerated closure of the valve, the jar applied to the latch being a very sudden one. On the shutting of the closer L by the counterweight 12 thereof the valve v will be opened, as will hereinafter appear, the load-receiver being at this stage empty.

For the purpose of discharging the load-receptacle 37 I prefer to connect its valve 3 with the main valve V, whereby these two members can be opened simultaneously, the necessary power being applied to the valve V.

The valve 39, which is pivotallyhungfrom the receptacle or hopper 37, has at one side thereof the integral bearing-sleeve 56, from the outer end of which extends the crank-arm 57, to which the rod 58 is pivoted, said rod being similarly jointed to the crank-arm 59 on the twopart valve-shaft 20. As the valve V is opened the shaft 20 and crank-arm 59 will be rocked, and the rod 58 will be thrust downward simultaneously, so that the valve 39 can be swung open to permit the contents of the receptacle or hopper 37 to pass there from and enter the supplemental spout 60 on the load receiver G, the inlet-opening of which is located immediately below the outlet of the receptacle 37.

To prevent material backing up .in the spouts 36 and 60, I provide the guard-walls 36 and GOinside the load-receiver, which extend from its opposite inside faces and about the inlets of the two spouts.

There is situated below the load-receiver a regulator R, which is in the form of an oscillatory hopper, the pivot thereof being designated by 65, and said hopper is furnished with the forward]y-extending arm 66, which carries the operating-weight 07 for returning said regulator to its uppermost position when the mass has gravitated therefrom, said regulator being intended to receive the loads intermittingly discharged from the load-re ceiver G and to be depressed or forced down ward thereby.

There is located within the regulator-hopper R the swinging governor 70, in the form of a gate or valve, which is pivotally supported between the end walls of the said regulator, and the discharge edge of said governor when it is in. its normal position is adjacent to the under inclined wall 71 of the hopper. The hopper R, as previously stated herein, is situated to receive the loads of material that are intermittingly discharged from the loadreceiver, and said regulator is adapted to contain sufficient of the material discharged thereinto to overbalance the weight 07, which thereby causes its depression or lowering, the material being discharged therefrom when it reaches its lowest position, as indicated in Fig. 5.

Means will be provided for locking the governor or gate in its normal position when the regulator R is at the limit of its upstroke and during its descent, such locking means being effective until the regulator has almost reached the endof its down movement, whereby said regulator can receive sufficient material to insure the overbalaneing of the operating-weight 67. The locking means for the gate 70 consists of the flange or rib 72, which can be cast on the inside face of the base 2, said flange having the curved face or runway 73, which is concentric to the axis of the hopper R and over which the projection or roll 74 on the crank-arm '75 of the gate is adapted to travel, whereby the movement of the gate from its normal position is prevented so long as the roll 74 is in contact with the curved face 75. \Vhen, however, said roll 74 leaves said face, the gate 7 O can be readily forced open by the pressure of the mass acting thereagainst, as indicated in Fig- 5. Instrumentalities will be furnished for momentarily locking the regulator R against return movement, so that it can be completely emptied of its contents before the valve V is opened, as said regulator constitutes the me dium for transmitting the necessary power to the valve to effect this operation. For this purpose I prefer to employ the rib 72 as a locking device, it having the deflected or oblique portion 76 at its lower end, and the roll 7i when it leaves the curved face 73 will be contiguous to the under face 77 of said portion 76, said roll being swung thereunder by the action of the gate 70 in opening. It will be evident that the deflected or oblique portion 76 of the rib "2 constitutes aneffective blocking device for preventing the immediate ascent of the regulator, and it will continue to do so until the gate 70 has returned toits normal position, said gate being permitted to do this when the mass within the regulator has passed completely below the lower edge of said gate, the latter having a slight preponderance of weight below its axis of movement, whereby its return is somewhat prolonged.

The flange or rib 72 has at its upper end the overhanging stop portion 7 8, against which the roll 74: is adapted to abut on the ascent of the empty regulator R, to thereby restrict such action.

It will be remembered that the regulator R has been described as constituting an actuator for the stream-e0ntroller, and in the present case such stream-controller, which consists of a valve, will be opened on the ascent of the regulator after its contents have been passed therefrom.

As a means for transferring the power of the regulator to thevalve I provide the thrustrod 80, which is normally disconnected from the valve, whereby said valve can be freely and rapidly closed to cut off the supply from the hopper II, but which is thrown into operative relation therewith at the proper time automatically. Said rod 80 is pivoted at its lower end to the lever 81 which bears against the fulcrum 82, in the form of the pin on the closer L, said lever 81 being jointed to the links 83 and 8st at their point of pivotal connection. The link Si is pivoted to one side of the hopper, while the other link is similarly attached to the inside face of the base 2. The valve V has on its right-hand end wall (see Fig. 1) the projection or grooved antifrietionroll 85, with which the upper or free end of the rod 80 is adapted to cooperate, said rod having the stop-shoulder 86 adjacent to said roll.

At the commencement of operation, as represented in Fig. 2, the regulator being up and the valve V nearly in its wide-open position, with the radial rod 26 against the stop 25, the inside face of the thrust-rod 80 near its upper end will be in contact with the periphery of the projection or roll 85. It will be evident that when the valve is released by the dropping of the stop. 25 below the rod 26 it can be promptly closed without interference of any kind. (See Fig. 3.)

hen the load is discharged from the loadreceiver G, it will enter the hopper It and promptly depress the same, and as the regulator descends it will pull the rod. downward through the medium of the interposed links 83 and S t and the lever 81, said lever acting against the fulcrum 82, and until the upper working edge 87 of the thrust-rod has been lowered to a position opposite the lowest.- point'of the periphery or tread of the pro jection or roll 85, whereby said working edge $7 can be thrown into operative relation with said roll by being thrust thereunder. For effecting this last-mentioned operation I provide means carried by the framework, such as the weight 88 on the outer end of the arm R0. The hub 00 of said arm is fixed to the rock-shaft 91, carried by the end frame 1, and said hub 90 has the crank-arm 92, to which is pivoted the link 03, said link being also pivoted to the thrust-rod 80.

It will be apparent that when the rod 80 has been drawn down in the manner just specified its upper edge 87 can be readily swung under the projection or roll 85 of the valve V, and until the stop-shoulder 87 meets said roll, by the action of the weight 88, as shown in Fig.

On the ascent of the empty regulator R, which is caused by the falling of the operating-weight 07, the thrust-rod 80 will be elevated, and said rod being in contact with the roller or projection 85 the opening of the valve V will of course follow. For automatically throwing these parts out of operative relation or out of contact I conveniently em ploy means operative with the valve V, such as the pin 0% thereon. Vhen said valve has nearly reached its wide-open position, the pin 0t will have met the rod 80, which is disposed in its path of movement, so that on the continued opening action of the valve the rod 80 is swung to the left and until its upper edge 87 is forced from under the 1 01185. Vhen this takes place, the valve V closes fora short distance, or until the rod 26 that is operative therewith comes against the stop 25, which thereby arrests the further closure of said valve and until the load-receiver has passed below the poisingline. As the valve moves from this wide-open position to that illustrated in Fig. 2 the rod 80 will be carried therewith by the weight 88 acting through the intermediate connections, the inside face of the rod being maintained in contact with said projection by said weight.

In connection with the closer and the stream controller or valve I provide recipro cally-effective stops operable to preclude the simultaneous opening of these two members. The open segment 10, which is connected with the closer L, acts as one of said stops, the cooperating stop being designated by and illustrated pivotally carried by the projection 101 on the end frame et, said segment having near its angle the crank-arm 102, which is connected by the intermediate link 103 with the crank-arm 10 on the two-part valve-shaft 20. The segmental stop 10 has the stop-flange 10, the coaeting member being equipped. with a similar flange 100, said flanges extending in opposite directions from the respective stops.

In Fig. 2,whercin the closer L is represented shut and the valve V open, the flange 10' is indicated situated above and adjacent to the flange 100'. During this time should the latch L be tripped too quickly or fail to work, the closer L can open for a very limited distance, or until the flange 10 reaches the cooperating stop-flange 100, the latter thereby arresting the further action of the stop 10. \Vhen the valve 'V is closed, the stop 100 will have been swung by said valve bodily across the plane of the outside curved face of the stop-segment 10, thereby releasing the latter, (see Fig. 3,) so that the latch L being tripped the closer L can be forced open, thereby drawing the stop 10 downward, with its flange 10 substantially in contactwith the flange 100, as represented in Fig. 4, whereby retractive movement of the stop 100, and consequently of the valve V, will be prevented, and this relation will continue so long as the closer L is open. When said closer has been shut, the stop 16 will release its companion step 100.

In connection with the auxiliary or loadreducing valve and the closer a similar pair of stops will be furnished. The stop that is operative with the auxiliary valve is designated by 105, it being similar in construction to the previously-described stops and preferably cast integral with the sleeve 32 ot' the auxiliary valve. The coacting stop is desig nated by 100, and it can be made in one piece with the stop 10. The stop-flange of the member 105 is designated by 105, the coacting flange of the other member being denoted by 100'. The operation of these two steps is indicated clearly in Figs. and 1-. On the opening of the auxiliary valve, as shown in Fig. 2, the flange 105 will be carried over the cooperating flange 100, so that the oscillation of the stop 100 will be prevented by the flange 105, as will be understood. On the shutting of the auxiliary valve the stop 105, that is connected therewith, will release the coacting stop 100. On the opening of the closer, as shown in Fig. l, the stop 100 will be thrust upward with its flange 106 across the path of movement of the flange 105, whereby the opening of the valve 31 will be barred by the blocking of the stop-flange 105 as soon as the latter touches the flange 106.

It will be evident from the preceding that the opening of the auxiliary valve 31 will be firmly blocked while the closer is open, so that the material within the spout 30 cannot run into the hopper 37 during the discharging of the load-receiver.

The operation of the heroin before-described weighing-machine is as follows: Fig. 2 represents the positions occupicd by the various parts at the cmmencement of operation, the closer L being shut and held in such position by the latch L, which is in engagement with the arm 1-1, that is connected with said closer, and the valve V is shown open and held in such position by the stop 25, which is in eni gagementwith the rod 26 of the valve, so that a stream of large volume will ilow from the hopper H and enter the load-receiver to nearly fill and to carry the same to a point below the poising-line. When the load-receiver has reached the end of its down movement, the stop 25 will have been carried below the rod 26, so that the valve V can be quickly shut by the weight 21. (See Fig. 5:3.) lVhen the valve V has nearly reached its closed position, the actuator or arm 40, which is conneeted to said valve, will be swung inward with the toe or projection 4-2 thereof againstthe similar projection 4-6 on the rock-arm 45, that extends from the sleeve of the auxiliary valve 31, so that said valve can be opened to permit the surplus to pass from the loadreceiver and into the auxiliary receptacle 37. This will cause the lightened bucketto rise, and when the overload has been withdrawn from the load-receiver the projection to will have reached a point above the projection 42, so that the auxiliary valve 31 can be promptly shut by the dropping of the weighted arm 51, which prevents further withdrawal of material from the load-receiver. As the auxiliary valve 31 shuts the tripper 55,which is connected thereto, will strike and raise the weighted arm 19 on the latch L and will depress the opposite arm thereof and disengage it from the crank-arm ll, so that the closer L is released and forced open and the charge from the loadreceiver emptied into the regulator-hopper R to depress the same. As said regulator descends the rod 80, through the intermediate connections, will be drawn downward thereby and its upper end will be swung beneath the projection or roll 85 on the valve V by the weight 88. When the material has passed below the discharge edge of the closer, it can shut, and when the re ulator is empty the weight 67 thereof will cause the same to rise, so that an upward thrust will be applied to the rod to force the valve V open, and when said valve has nearly reached its wideopen position the projection 94 thereon will throw the rod 80 out of contact with theroll and the valve will be shut for a short dis tance, or until the rod 26 abuts against the stop As the valve V opens the valve 39 of the load-receptacle 37 will be simultaneously opened, as it is connected therewith, so that the contents of said receptacle can pass into the empty load-receiver through the spout (30 thereof.

Having described my invention, I claim 1. The combination, with a load-receiver of stream-supplying means; a stream-coutroller; a regulator located to receive and to be lowered by the contents discharged from the load-receiver and constituting an actuator for the stream-controller; a'eonnector between the regulator and the streamcontroller, for transferring the power of the Former to said regulator;

the latter; means [or throwing the connector into operative relation with the streanrcontroller on the depressionoi the regulator; and instrumentalities lor temporarily blocking the return movcn'lcnt of the regulator.

The combination, with a loada-eceiver, of a stream-controller; means for actuating said stream-controller, said means including aregulator located to receive and to be depressed by the contents discharged from the load-receiver; a valve on said regulator; means for holding the valve against move ment when the regulator is in its normal position; and instrunientalities forblockingtemporarily the return of the regulator when it is depressed.

$3. The combination, with weighing mechanism including a loadreceiver provided with a closer,ofstream-sirpplying means; a streamcontroller; a regulator located to receive and to be depressed by the contents discharged from the load-receiver; instrumentalities for blocking the return movement of the regulator when it depressed; a rod connected with he regulator; and means for throwing said rod into operative connection with the stream.- eontroller on the depression of the regulator, whereby as the latter rises the valve will be opened.

The combination, with weighing mech anism including aload-receivcr, of a hopper; a valve for controlling the passage of material trom the hopper to the load-receiver; a valve-closing device; a regulator. located to receive and to be depressed by the contents discharged from the load-receiver; instrumentalities [or temporarily blocking the return movement of the regulator when it is depressed; a rod connected with the regulator; and a counterweighted device mounted on the framework and connected with the rod, said device being operative, on the depression of the hopper, to throw the rod into operative relation with the valve, whereby on the ascent of the regulator the valve will. be opened.

5. "he combination, with weighing mechanism including a load-receiver, of a streamcontroller having a projection; a regulator located to receive and to be depressed by the contents discharged from the load-receiver; a thrust-transferring member connected with said regulator; means for throwing such transferring member under said projection; and a second projection on the stream-eontroller, adapted to throw said thrust-transferring member out of contact with the first-mentioned projection.

6. The combination, with weighing mechanism including a load-receiver, of a streamcontroller having a projection; a regulator adapted to receive and to be depressed by the contents discharged from the load-receiver; a thrust-transferring member connected with means for throwing said thrust-transferring member under said projection; a second projection on the stream- IIO controller,adapted to throw said th rust-transfer-ring member out of contact with the lirstmentioned projection; and means for temporarily blocking the return movement of the regulator when it is depressed.

7. The combination, with a ltntd-receiver, of a regulator adapted to receive and to be depressed by the contents discharged from said load-receiver; a streamcontroller; a thrnst-transferring member; a lever connected with said thrust-transferring ll'lQlllbOl; a pair of links attached, respectively, to the regulator and to the framework; and also to said lever and an operating-weight on the framework, connected with said thrust-transferring member.

8. The combination, with weighing mech anism embodying a load-receiver, of overloading and load-reducing means each includ ing a valve; an actuator for the load-reducing valve, connected with the overloadingvalve; a regulator located to receive and to be depressed by the contents discharged by the load-receiver; a thrust-transferring member connected with the regulator; and means for throwing said thrust-transferring member into operative connection with the overloadcontrolling valve.

9. The con'ibination with weighing mechanism embodying a load-receiver, of overloading and load-red u cin g means eachincluding a valve; an actuator for the load-reducing valve connected with the overload-eontrolling valve; means comprehending a latch, for governing the discharge of the load-receiver; a latch-tripping device cooperative with said load-reducin g valve; a regulator positioned to receive and to be depressed by the contents discharged by the load-receiver; a thrust-transferring member connected with said regulator; and means for throwing said thrust-transferring member into operative connection with the overload controlling valve.

10. The combination, with weighing mechanism including a load-receiver, of overloading and load-reducing means each comprehending a valve; an actuator for the load-reducing valve, connected with the overloadcontrolling valve for operation; a valved receptacle positioned to receive the material removed from the load-receiver by the loadreducing means; and a connection between the overload-controlling valve and the valve of said receptacle, whereby the latter maybe operated.

11. The combination, with a load-receiver having a closer, of a stream-controller an ac tuator for said stream-controller; a lever the fulcrum of which is on the closer, said lever being connected with the actuator; and a connection between the lever and the streamcontroller.

12. The combination, with a load-receiver having an outlet; of a closer for said outlet, carryinga pin; astream-controller; a streamcontroller actuator: a lever adapted to bear against said pin, which constitutes a fulcrum therefor, said lever being connected with the actuator; and a connection between said lever and the stream-controller.

13. The combination, with a load-receiver, of a stream-controller; an actuator for said stream-controller; a pair of links connected, respectively, with the framework and with said actuator; a lever jointed to said links; and a connection between said lever and the stream-controller.

11 The combination, with a stream-controller, of an actuator for said stream-controller; an intermediate thrust-transferring member connected with the actuator and disconnected from the stream-controller; a shaft carried by the framework and furnished with an operatirig-weight; and a connection between said shaft and thrust transferring member.

15. The combination, with a load-receiver, of a stream-controller; a regulator positioned to receive the contents from the load-receiver, and constituting an actuator for the streamcontroller; a thrList-transferring member situated between the regulator and the stream controller; a shaft on the framework, carrying two crank-arms, one of which is counterweighted and the other of whichis connected by a link to said thrust-trainsferring member.

16. The combination, with a load-receiver having a disclntrge-outlet; of a closer for said outlet, provided with a pin a valve supported for opening and closing movements, and having a projection; a regulator located to receive the contents discharged from said loadreceiver; a lever bearing against said pin, which acts as a fulcrum therefor; a-pair of links connected, respectively, with the framework and with said regulator, said links being joined to said lever at their point of connection; a rod pivoted to said lever and cooperative with the projection on the valve; a rock-shat t carried by the framework, furnished with two crank-arms, one of which is weighted and the other of which is connected by a link to said rod; and a second projection on said valve, adapted to engage said rod on the opening movement thereof.

17. The combination, with a load-receiver having a closer, of a stream-controller; means for actuating said stream controller, said means including a load-receiving hopper supported for descending and ascending movements beneath the load-receiver; and a device independent of the closer, for temporarily blocking said hopper against ascending movement.

18. "he combination, with a load-receiver and with load-discharging means therefor, of a stream-controller; means for actuating said stream -eontroller, said means including a hopper supported for descending and ascending movements beneath said load-receiver,

7 said hopper having a gate; and lockingmeans for said gate, operable on one of the strokes of said hopper and adapted to prevent the immediate ascent of said hopper.

19. The combination, with a load-receiver and with load-discharging means therefor, of an oscillatory hopper situated to receive the contents discharged from said load-receiver; a gate carried by said hopper, having a crankarm fixed thereto provided with a projection; and a stop having a longitudinal cu rvcd face along which said projection is adapted to travel, said curved face being coneen trio with the axis of said hopper.

20. The combination, with a loadreceiver and with load-discharging means therefor, of an oscillatory hopper situated to receive the contents from the load-receiver and having a gate provided with a crank-arm equipped with a projection; a stop-rib on the framework, having a curved face along which said projection travels, said stop-rib also having an oblique portion at its lower end under which the said projection can be thrust on the movement of the gate.

2L. The combination, with a load-receiver and with load-diseharging means therefor, of an oscillatory hopper situated to receive the contents discharged from the load-receiver; a gate carried by said hopper and having a crank-arm provided with a projection; a rib having a curved face along which said proj ection is adapted to travel, said rib having stop portions at its ends.

22. The combination, with weighing mechanism including a load-receiver, of overloadin g and load-reducin g means operative in this order during the weighing of the load, the load-reducing means embodying a valve; and an actuator for said valve, connected with the overloading means.

23. The combination, with weighing mechanism including a load-receiver, of overloading means and load-rei'lucing means each embodying a valve; and an actuator for the load-reducing valve, connected to the overload-controlling valve.

24. The combinatiol'i, with a load-receiver, of a supply-hopper; a valve for said hopper, the shaft of said valve having a crank-arm; an auxiliary valve carried by the load-receiver; an actuator for said auxiliary valve; and a link connected, respectively, to said crank-arm and actuator.

2.". The combination, with a load-receiver, of load-discharging means therefor including a latch; overloading an d load-rcducin g means, each comprehending a valve; and a tripper connected with the auxiliary valve and adapted to trip the latch through the momentum acquired by the auxiliary valve in closing.

26. The combination, with weighing mechanism including a load-receiver, of overloading and load-reducing means therefor, the first-n'ientioncd embodying a valve; a receptacle situated to receive the contents removed from said load-receiver during the weighing of a load; and a valve for said receptacle, connected with the overload-eontrollin g valve for operation.

27. The combination, with a load-receiver and with load-discharging means therefor, of overloading and load-red ncin g means opera tive during the weighing of a load, the loadreducing means including a valve; and means operative on the discharge of a load, for positively blocking the opening movement of said valve.

FRANCIS II. RICHARDS.

\Vitnesses:

FRED. J. Donn, HEATH SUTHERLAND.

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