US1605568A - Mill-roll stand - Google Patents

Description

Nov. 2 1926.

K. SIEG MILL ROLL STAND Filed Augwst 25, 1925 5 Sheets-SheetI 1 Nov. 2 1926. 14,605,568

K. SlEG MILL ROLL STAND Filed August 25, 1925 3 Sheets-Sheet 2 Z3@ T' Z3 @2 f.

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K. SIEG MILL ROLL STAND Filed Augflst 25, 1.925 3 Sheets-Sheet 5 MYMM www@ Patented Nov.A 2, l 1926.

UNITED STATES l 1,605,568 PATENT OFFICE.

KARL S\IEG, OF BROOKLAWN, NEW JERSEY, ASSIO-NOR TO SAMUEL M. LANGSTON COM- PANY, F CAMDEN, NEW JERSEY, .A CORPORATION OF N EW JERSEY.

MILL-ROLL STAND.

Application filed August 25, 1925. Serial No. 52,473.

This invention is an improvement in elevating and supporting mechanisxrand in the preferred form is particularly adapted for lifting a heavy roll of paper or other web material and supporting it in such manner that the roll may be rotated and the web ulrwound for delivery to any type of machine in which the web is operated on, as

for instance by printing, corrugating, slitting, scoring, rewinding, etc.

As one important feature of this invention there is provided a pair of lifting members in the form of bars which "may act as levers and swing in vertical planes, and may also move endwise in respect to theii` pivotal supports. These lifting members may be swung down and moved out to positions bei neath the ends of the roll carrying shaft, swung up to lift the roll free of the dolly or 2o other transporting means, and then moved back to carry the roll to the main frame of the machine where its shaft may be depositedin suitable bearings by the lowering of the lifting members. l

As a further important feature there is provided operating connections between the lifting members for moying them in synchronism, the connections being so designed that they do not interfere with the movement of afull diameter roll lengthwise of the apparatus between the pivotal supports.

As a further feature the frame of the apy paratus is provided with a roll support to which the shaft of the roll may be transferred from the lifting members, and in connection with which there is provided f means for resisting the free rotation of the roll and thus putting the web under the desired tension as it is being delivered from the roll.

'As a `further feature there is provided a second roll support to which a roll may be transferred from the lifting members, whereby two rolls may be unWound Vsimultaneously, or a second roll may be lifted and made ready for use while the other roll is being unwound'.

As a further feature the lifting means is so designed that it may be employed for lifting a roll from either side of the apparatus to either roll support, or for transferring a roll from one support to the other.

Asa further feature there is provided simple and easily operated means for shifting the roll endwise on the roll support 'or for moving one end laterally in respect to the other to properly line up the web with the machine to which it is to be delivered.

As a further feature there is provided a simple and easily operated power transmitting mechanism for swinging the lifting members in any position of endwise adjustment, and for moving the lifting members endwise in any position of angular adjustment.

The invention in its preferred form embodies various other important features and possesses many advantages which will be pointed out hereinafter, or will be apparent from a consideration of the description and the accompanying drawings.

In these drawings: Fig. 1 is a perspective View showing the drive side of the apparatus.

Fig. 2 is a perspective view showing the other side of the apparatus.

Fig. 3 is a plan view.

Fig. 4 is a detail of the gearing mechanism, and

Figs. 5, 6 and 7 are somewhat diagrammatic side elevations showing the parts in different positions, Fig. 5 showing the lifting members in position for lifting al roll, Fig. 6 showing the roll ready to be lowered onto the roll support of the frame, and Fig. 7 showing the parts in position during shifting of the roll from one end of the apparatus to the other.

In the specific construction illustrated the apparatus 4or machine includes two main rame members 10 and 11 spaced to a distance slightly greater than the maxlmum length of roll which is -to be supported. They are made in any suitable manner butV of suiiicient strength'for adequately sustaining the weight of the roll and resisting the pull on the web during the unwinding opera-l tion. Each frame member carries means for lifting and supporting one end of the shaft of the roll. Such roll supporting 100 shaft is detachable from the machine and may be of any suitable character. As shown particularly in Fig. 3, it includes a shaft 12 of somewhat greater length than the length of the roll to be supported, and provided 105 with suitable means for locking the roll rigid in respect to the shaft. Such means 1s shown as a pair of conical members 13 adapted to be moved toward or away from each other along the shaft.. When forced into the 110 opposite ends of the roll, they act to center thevroll and hold it against rotation or endwise movement in respect to the shaft.

The roll lifting members are in the form of a pair of bars 14 each provided at each end with means for directly or indirectly engaging the shaft 12 to lift the latter. The engaging means is illustrated as an upwardly extending lug or projection 15 presenting a shoulder to keep the shaft from rolling off the upper side of they member as the shaft is lifted by the member. The bars are mounted for endwise movement, and for this purpose are provided with suitable antifriction bearings. As shown, eachl member is of substantially channel shape with a laterally facing groove receiving a plurality of anti-friction rollers 16. For effecting the endwise movement of the members 14 they are adapted to be operatively connected to driving or operating mechanism. As shown,

' the lower edge of each member 14 is provided with an integrally formed or rigidly attached rack bar 17. Each lifting member is carried by a pivoted supporting and guiding member 18 whereby the lifting member may be swung in a vertical plane as well as move endwise. Each pivoted member 18 is of substantially fform, and is carried by a pivot pin 19 mounted in the corresponding frame member adjacent to the upper edge of the latter. The pivot pin or pivotal support for each member 18 is approximately at the point of intersection of the crosshead or top portion 20 of the T, and the depending leg 21 of the 'l'. The roll lifting members are carried b the head portion 2O of each member 18 an extend approximately radially in respect to the pivotal center. 19. rlhe antifriction rollers 16 are carried by the head 20' adjacent to opposite ends of the latter. For holding the members 14 in position on the rollers 1G the head has an upwardly extending flange 22 along its lower edge, and a somewhat similar but shorter depending flange 23 at its upper edge. These flanges prevent lateral movement of the lifting members off the rollers and allow sufficient yfree play so that the members are properly guided by the rollers.

For lifting the roll, means are provided for simultaneously moving the members 14 endwise in either direction, and means are also provided for simultaneously swinging the members 18 in either direction. ylhese means are so designed thatthey do not interfere 'with the free movement of the roll lengthwise of the machine between the pivotal centers of the supporting members 18. 'llie mechanism or means for reciprocating the members 14 includes a cross shaft 24 journaled in the lower ends' of the leg portions 21. llt each end the shaft is connected to the rack bar of the corresponding member1 14 by suitable gearing. As shown, the Shaft has a pinion 25 at one end-which meshes with a gear 26 mounted on the leg 21 ofthe member 18 and the gear 26 is of such diameter that it meshes with the rack bar. At its opposite end the shaft 24 is provided with a pinion 25a which is the first of a series of a train of pinions 25a, 27, 28 and 29. The pinion 29 meshes with the corresponding rack bar, and one of the intermediate pinions for instance the pinion 28, has a shaft 28l1 projecting through the member 18 and an opening in the frame member 10 and provided at its outer end with suitable means for rotating it. This rotating means is shown as a large hand wheel 30. By rotating the hand wheel the pinion 28 will operate the pinion 29 to reciprocate one member 14, and will operate the pinion 27 to drive the shaft 24 and the gear 26 to reciprocate the other member 14 to the same extent and in the same direction. The two members 14 are thus maintained in .synchronism so far as endwise movement is concerned, and the operation of the actuating mechanism is not in any way interfered with or disturbed by the swinging or pivotal movement of the members 18. Furthermore, the shaft 24 is closely adjacent to the floor and out of the path of movement of the roll or any other load which may be moved lengthwise of the machine between the two frame members 10 and 11 and supported by the latter.

rlhe mechanism for swinging the supporting members 18 and maintaining them in synchronism also includes a transversely disposed shaft 31 adjacent to the lower part of the frame and parallel to the shaft 24. rThis shaft is connected by suitable gearing to a pair of screw shafts 32 extending lengthwise of the machine adjacent to the members 18 and having threaded engagement in blocks 33 swivelled on the members 18. By rotating the screw shafts 32 the blocks 33 are caused to move along the screw shafts and thus swing the members 18. rlhis involves a slight change in the angle of the shaft in respect to the leg 21 of the pivoted member, and this movement is permitted by the slight oscillation of the bloc-k 33 on the leg. Because of the comparatively great weight of a roll of paper and the long leverage exerted when the members 14 are in extended position, the gearing between the shaft 3l and the screw shafts 32 is of the speed reducing type. ills shown, each screw shaft 32 has a large worm wheel 34 meshing` with a comparatively small diameter worm 35 on. the shaft 3l. .its the screw shafts raise and lower slightly during a swinging of the members 18, the screw shafts are journaled in brackets 3G which may swing about the shaft 31 as a center, and are provided with suitable end thrust collars 37.

The shaft 31 may be rotated by hand if 'the load is comparatively light, although in ordinary practice it is preferable, to drive the shaft from some suitable prime mover. The shaft 31 is illustrated as being geared to a parallel shaft 37'through speed reducing gearing 38, 39, and the shaft 37 is provided with a comparatively large sprocket wheel 40 to which power may be transmitted from a line shaft, electric motor, or other source of power. Thus by turning the sprocket wheel 40 the shaft 30 is rotated at a lower speed, and this in turn rotates the two screw shafts 32 at a still lower speed to swing t-he members 18, simultaneously and to equal extent in the same direction. With this speed reducingfgear transmission a comparatively small electric motor may operate to lift a very heavy roll of paper. The use of the worm gearing makes the transmission of power substantially non-reversible. The motor is preferably of the reversible type and may be controlled by a switch in a housing 62 on a bracket 60 adjacent to the hand wheel 30, and having a switch handle 61. For holding the load in position when the current is of the motor, the shaft 31 is provided with a brake drum 41 which is engaged by a brake band 42 carried by an extension on the bracket 36. rllhe ends of the brake band come adjacent to the floor and may be brought together to grip the brake drum by means of a foot pedal 43. Any other suitable form of brake or other locking mechanism might be employed.

1n order to put the paper under the desired tension during the unrolling of the paper, there is provided suitable brake mechanism. f, The shaft 12 is vprovided with a brake drum 44 at one end thereof, and the frame member 10'is provided with brake shoes for engaging the same. The frame members 10 and 11 are provided with notches or bearing recesses 45 to receive and support the shaft after it has been lifted and conveyed to said beaiingyrecesses by the lifting members 14. The brake shoes are mounted in proper position in respect-to these hearings, and preferably are so de` signed' that the brake drum and brake shoes may be employed as means for`adjusting the shaft 12 endwise. As shown; there are provided a .pair of brake shoes 46 mounted on a screw shaft 47 which latter is yrotatably mounted in the main frameolO, and a bracket 48 which may be cart integral with the frame. The -two brake shoes may be swung upwardly and toward each other about thev screw shaft 47 as a pivot, so as to engage opposite sides of the brake drum 44,' and may then be clamped together by a nut 49 on a bolt 50 pivotally connected t0 the extremity lof one of the brake shoes, and adapted to enter a slot in the extremity of the other.

K' By tightening the nut 49 which is preferably made in the form of a hand wheel, the brake drum may be gripped to provide any suitable resista-nce to 'the rotation of the shaft and the roll of paper thereon. The brake drum 44 is preferablyy of the grooved type so that thebrake shoes 'when in position. engage between side flanges on the drum. The screw shaft 47 may have the brake shoes 46 held against endwise movement in respect to the shaft, v"and the shaft threaded in its bearings, so as to permit of its endwise movement, 'or said shaft may be held against endwise movement in its bearings, and rovidedfwith a non-rotatable nut or colar threaded on the screw shaft, and to which the brake shoes may be pivote/d, or in connection with which said brake shoes are mounted. lBy rotating the screw shaft 47 the brakeA shoes may be moved toward or from the main frame member 10 and thus may be rbrought into proper poition in respect to the brake drum when the rolol is first deposited in the bearinlgs 45. The brake shoes may then be clamped in position in engagement with the brake drum and thereafter by rotating the screw shaft 47 the shaft 12 and the roll of paper may be moved bodily endwise to bring the paper into proper alignment with the machine to which the paper is to be fed. The sc'ew shaft is rovided with a suitable hand wheel 47a for facilitating rotation thereof.,v y

As one feature of the invention the frame members 10 and 1.1 are provided 4with separate bearing receses 45 on opposite endsl thereof for supporting the shaft 10'on either end of the apparatus or roll stand., and the lifting members 14 are so constructed that they may operate to transfer" the shaft from one end of the stand to the other and maintain the shaft in parallelism with it?l initial position during such movement. Each lifting member 14 has a dog 5l secured thereto 'by a pivot pin 52 and yieldingly held in a normal or central position by a spring 53. The dog has a notch or recess 54 adjacent' to its outer end adapted to receive and engage the shaft 1 0, and 4beyond this recess the dog has a cam or inclined cam surface 55. By moving the lifting membersr 14 endwise the dogs 51 will be forced downwardly as they'pass beneath the sha-ft 12. When they get beyond the shaft their free ends will spring upwardly and then upon moving the members 14 in the opposite direction the cam surfaces 55 will cause the dogs 'to ride up on to the shaft until the latter enters the recesses 54. By tilting the members 14 the shaft may lie lifted bodily out of the -bearing recesses 45, and by then moving the members endwise the shaft will be caused to slide orf'roll along the straight upper edges of the frame members 10 and other end of the stand. The dogs may then j be lifted out of engagement with the shaft and the lifting members returned and used for lifting another roll of paper onto the frame. The first mentioned roll after being shifted to the other end of the stand may have its brake drum engaged by the second'set of brake shoes, and may be again adjusted endwise by the latter if necessary. Thus, after a roll of paper has become partly used up the remainder of the roll may `be quickly moved to the other end of the stand and there held for the continued delivery of paper, while a new roll isbeinff lifted into place, properly adjusted,`and c amped to give the desired tension, or while one roll is being used at one end a new roll may be lifted into place at the other end and adjusted so as to be ready for immediate use.

In setting up the machine it is importantthat the two frame members 10 and 11 be so positioned that the shaft 12 when in the bearing recesses will be parallel to the receiving rollers of the machine to which the paper is to be delivered, or so that the tension on the two edges of the paper will be equal. Preferably one of the frame members, for instance the member 10, has a separate base 56 on which the main portion of the frame member may slide in its own plane, that is, in a direction at right angles to the shafts 24 and 31. rIhe base is provided with a bracket 57 which may be cast integral therewith, and mounted in this bracket is a screw shaft 58 having threaded engagement in a portion of the frame member l0, or with collars engaging the latter. The screw shaft may be provided with a hand wheel 59, whereby said shaft may be rotated to move the frame member 10 to a limited extent in respect to the frame member 11. The shafts 24 and 31 may have "slight play in thelr bearings to 'permit this adjustment with binding. ,l It is thought that the operation of the apparaus will be apparent from the foregoing, but particular attention is directed to Figs. 5, 6 and 7, in which certain of the parts are shown somewhat diagrammatically in three different positions. In Fig. 5 the lifting member is shown extended to a position beneath the roll shaft, and with the latter engaging with the lugs 15. Upon transmitting power to themachine through the gear 40 the members 18 are caused to swing about their pivotal centers 19 to lift the roll to an f elevation at least as high as the upper edge ofthe frame members 10 and 11. Simulta' neously, or thereafter, the hand wheel 30 may be rotated to niove the members 14 endwise and bring the parts to the position shown in Fig. 6, from which position the member 18 is oscillated to a slight extent in the opposite 'direction and the shaftis lowered into the bearing recesses 45. The paper may be delivered from the roll when in this position, or the roll may be immediately transferred to the opposite or front end of the apparatus and there supported for delivery, or it may be held at the rear end for transferring to the front end when the roll at the last mentioned end becomes exhausted. In moving the roll from the rear end to the front end, the lifting member 14 is moved endwise toward the left from the position sh'own in Fig. 6, until the dogs 51 pass beneath the shaft 12 and rise on the opposite side. The member 14 is then moved in the opposite direction until the shaft passes into the recesses 54. The member 14 is then lifted to raise'the shaft out of the bearing recesses 45, and is then moved endwise to slide or roll the shaft along the members 10 and 11. In Fig. 7 the beginning of this rolling movement is shown, and it will be noted that the engagement of the shaft with the two dogs 5,1 holds the shaft in parallelism with its initial position. At the completion olf this movement the shaft will drop into the recesses 45 at the front end of the machine, or may be lowered into them by means of the lifting members 14.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. A rollstand including a pair of members having means for engaging the opposite ends of a roll shaft, means for swinging said members simultaneously in parallel vertical planes to raise or lower said shaft engaging means, and separate means for moving said members horizontally.

2. A roll stand including a pair of members having means for engaging the opposite ends of a roll shaft, means for swinging said members simultaneously in parallel vertical planes to raise or lower said shaft engaging means, and separate means for moving said members substantially radially in respect to the pivotal centers of said members.

3. A roll stand including a pair of roll shaft engaging members each mounted for endwise movement and for swinging movement at any point along the path of the first mentioned movement, and operative connections for maintaining said movements in synchronism.

4. In combination a pair of pivoted members, means for simultaneously swinging them in parallel planes, a pair of load engaging members each carried by its correspending pivoted member, and means for simultaneously moving said load carrying members endwise in respect to the first. mentioned members.

5. In combination a pair of pivoted members, means for simultaneously swinging them in parallel planes, a pair of load engaging members each carried by its corresponding pivoted member, and means for simultaneously moving said load carrying members endwise in respect to the first mentioned members, both of said means being so positioned as to permit movement of the load between the pivotal centers of the first mentioned members.

6. ln combination a pair of pivoted members, means for simultaneously swinging them in parallel planes, a pair of load engaging members each carried by its corresponding pivoted member, and means for simultaneously moving said load carrying members endwise in respect to the first mentioned members, both of said means including offset portions permitting movement of the load laterally between the pivotal centers of said first mentioned members.

7. A roll stand including a .pair of pivoted members spaced apart with their pivotal centers in alignment, a load lifting member slidably mounted upon each of said first mentioned members, and having a rack bar, and a pinion carried by each of said first mentioned members 'and meshing with its correspon-ding rack bar.

8. A roll stand including a pair of pivoted members spaced apart with their pivotal Acenters in alignment, a loadl lifting member slidablymounted upon each of said first mentionedmembers, and having a rack bar, a pinion carried by each of saidfirst men,- tioned members and meshing with its corresponding rack bar; and means for rotating v said pinions.

9. A roll stand including a pair of pivoted members spaced apart with their pivotal centers in alignment, a load lifting member slidably mounted upon each of 'said' first mentioned members, and having a rack bar, a pinion carried by each of said. first mentioned members and meshing with its corresponding rack bar, and a cross-shaft journaled in said members for rotating said pinions.

10. A roll stand including apair of pivoted members spaced apart with their piv-v otal centers in alignment, a load liftinu member slidably mounted upon each of sai first mentioned members, and having a rack bar, a pinion carried by each of said first mentioned members and meshing with its corresponding rack bar, a crossshaft journaled in said members adjacent to the lower portiony of the stand and below said ivotal centers, and gearing connecting sai shaft.

and said pimons.

11. A roll stand including a pair'of piv7 oted members spacedapart' with their pivotal centers in alignment, a pair of load lift-fv ying members each having a rack bar and 12. A roll stand includingja pair of members ofapproximately T-form, a load engagingmember movable along the head portion of each T, pivotal supports for said members with their centers in alignment, and connections between the leg portions of said T-members for holding them in synchronism about said pivotal centers, and permitting movement of a roll between said centers.

13. A roll stand including a pair of members of approximately T-form, a load engaging member movable along the head portion of each "l", pivotal supports for said members with their centers in alignment, and means engaging the leg portions of said members for swinging them in parallel planes.

14. A roll stand including a pair of members of approximately T-form, a load engaging member movable along the head portion of each T, pivotal supports for said members with their centers in alignment, means engaging the leg portions of said members for swinging them in synchronism, and means carried by said leg portions for moving said load carrying members endwise in synchro-v msm.

15. `A roll stand including a pair of members of approximately T-form, a load engaging member movable along the head portion of each l, pivotal supports for said members with their centers in alignment, -means engaging the leg' portions of said members for 1 swinging them in synchronism, a cross-shaft carried by said leg portions, and gearing connecting said sha t and said load carrying members for sliding the latter.

16. A roll stand including a pair of members of approximatelyG "lV-form, a load engaging member movable along the head portion Vof each T, pivotal supports for said members with their centers in alignment, 'and a cross-shaft, separatedriving connections between said shaft and said leg por# tions for swinging the rst mentioned members in synchromsm upon rotation of the shaft. l

17. A roll stand including a pair of mem` bers of approximately T-form, a load engaging member movable along the head portion of each "l", pivotal supports for said members with' their centers in alignment, a

cross-shaft, separate driving connections between said shaft and said leg portions for swinging the first mentioned members in synchronism upon rotation of the shaft, and

`a brake on said shaft for holding the latter pair of screw shafts one engaging each leg portion, a cross shaft, and gearing between 130 said cross-shaft and each of said screw shafts.

19. A roll stand including a pair of pivotal members mounted for oscillation in parallel planes with their pivotal centers in alignment, loadr carrying members slidable in approximatelyv a horizontal position, one carried by each of said first mentioned members, each of vsaid first mentioned members having a depending leg portion, means engaging said leg portions for swinging said first mentioned members in synchronism, and means carried by said leg portions for sliding said second mentioned members in synchronism.

20. A roll stand including a pair of pivoted members mounted for koscillation in parallel planes with their pivotal centers in alignment, load carrying members'slidable in approximately a horizontal position, one carried by each of said'first mentioned members, each of said first mentioned membeis having a depending leg portion, means engaging said leg portions for swinging said first mentioned members in synchronism, and a rack bar and pinion carried by cach of said first mentioned members for sliding the corresponding second mentioned member.

21. A roll stand including a pair of members pivoted to swing in parallel, vertical planes, and having their pivotal centers in alignment, rollers carried by each of said members, and load lifting members engaging with said rollers and movable endWise in respect to said first mentioned members.

22. A roll stand including a pair of members pivoted to' swing in arallel vertical planes, and having their pivotal centers in alignment, rollers carried by each of said members, load lifting members of channel form receiving said rollers in the channels thereof, and movable endwise on'said rollers, and independent means for sliding said load carrying members and swinging said first mentioned members.

23. A roll stand including a pair o f members pivoted to swing in parallel vertical planes and having their pivotal centers in alignment, rollers carried by 4each of said members, load lifting members slidably mounted on said first mentioned members, a pair of cross shafts adjacent to the lower part of the stand and having independent means for rotating them, connections between one of said shafts and said first mentioned members for swinging the latter, and connections between the other of said shafts and the load carrying members for sliding the later.

24. A roll stand including a pair of frame members having roll shaft supports, means for lifting a roll shaft into engagement with said supports, brake mechanism carried bv one of said frame members for resisting rotation of said ,shaftowhen on said shaft supports and means engaging said brake mechanism for moving said sha t endwise. 4

25. A roll stand including av removable roll shaft having a brake drum carried thereby, a pair of frame members having means for supporting the opposite end portions of said shaft, a bra-ke shoe mounted on one of Vsaid frame members and adapted to engage said brake drum, and means on said frame members for lifting the shaft to bring the drum into juxtaposition with said brake shoe.

26. A roll stand including a removable roll shaft having a brake drum, a pair of frame members having means for supporting the opposite end portions of said shaft, lifting means on said frame members for positioning said shaft on said supporting means, a brake member carried by one of said members for engaging with said brake drum, and means for moving said brake member toward and from said frame member to move said shaft endwise.

27. The combination with a roll shaft having a fianged brake drum, of a roll stand having supporting means for said shaft, pivoted members for lifting said shaft onto said Supporting means, a. pair of brake shoes carried by said frame and adapted to engage with said brake drum, and means for moving said brake shoes in a direction parallel to said shaft to move the latter end wise.

28. A roll stand including a pair of mem- `bers having front and rear roll shaft supports, and a pair of roll lifting members mounted f or pivotal and sliding movement for depositing a roll shaft directly upon either of said roll supports and from either end of the stand, and separate brake means adjacent to each support.

29. A roll stand including a pair of members having front and rear roll shaft supports, a pair of roll lifting members mounted for pivotal and sliding movement for depositing a roll shaft directly upon either of said roll supports, and from either end of the stand, and means at each end for resisting rotation of the shaft.

30. A roll stand including a pair of members having front and rear roll shaft supports, and a pair of roll lifting members mounted for pivotal and sliding movement for depositing a roll shaft 'directly -upon eitherof said roll supports, and from either end of the stand.

31. A roll stand including a pair of members each having roll'fsupporting means 'at opposite ends thereof, and a substantially Straight, horizontally disposed surface between said roll supports, and a pair of members for lifting a roll support on to the roll supports at one end of said frame members llO and for sliding the roll shaft along said surface to the roll supports at the other end.

32. A roll stand including a pair of members each having roll supporting means at opposite ends thereof, and a substantially straight, horizontally disposed surface between said roll supports, a pair of members each having pivotal and, sliding engagement with its corresponding frame member, and means' for operating said, second mentioned members for, placing a roll shaft upon either of said roll supports.

33. A roll stand including apair of members each having roll supporting means at opposite ends thereof, and a substantially st raight, horizontally disposed surface between said roll supports, a pair of members each having pivotal and sliding movement in respect to its corresponding frame member, means for operating said second mentioned members to lift a roll shaft on to the roll supports at one end of said frame members, and means secured to each ofsaid second mentioned members for sliding the shaft along said surface between said roll supports upon endwise movement of said second mentioned members.

34. A roll stand including a pair of frame Amembers having roll supports at opposite ends thereof, and a substantially straight horizontally disposed roll supporting surface between said roll supports, a member pivotally mounted upon each frame member, a load lifting member slidably mounted oneach of said second mentioned members, and a dog pivotally mounted on each of said load lifting members for moving the shaft horizontally on the corresponding frame member` upon a sliding movement of the load lifting member.

Aand forth on said frame between 35. A roll stand including a pair of frame members having front and rear shaft supports, and a substantially horizontal surface therebetween, a member mounted to reciprocate along each of said frame members, and a member pivoted to each of said second mentioned members for engaging with a roll shaft to move the latter along said surface between said roll supports.

36. A roll stand including a pair of frame members having front and rear shaft supports, and a substantially horizontal surface therebetween, a member mounted to reciprocate along each of said frame members, and a. member pivoted to each of said second mentioned members for engaging with a roll'shaft to move the latter along said surface between said roll supports, said last mentioned members each having means for yieldingly holding the latter in a predetermined position, but permitting the member to slide beneath the shaft upon movement in one direction, and interlock with the shaft upon movement in the opposite direction.

A roll stand including a frame having a, pair of roll supports at opposite ends thereof, a pair of members movable back said supports, and a dog pivoted to e'ach of said members and having yielding means for holding it in apredetermined position in respect to its member, each of said dogs having a recess for receiving a roll shaft to move the latter from one shaft support to the other upon reciprocation of said first mentioned members.

Signed at Camden, inthe county of Camden and State of New Jersey, this 22nd day of August, A. D. 1925.

KARL SIEG.

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