US1929893A - Scoring machine - Google Patents

Description

oct. 1o, 1933. H. l KWNEY 1,929,893l SCORING MACHINE Fil'ed Aug. 21, 1930 5 Sheets-Sheet 1 HIHHHIHIIIHH.,

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Oct. l0, 1933.

H. c. KINNEY 1,929,893

SCORING MACHINE Filed Aug, 21, 195o s sheets-sheet 2 l .i f N i) N e0 'l I;

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Oct. 10, 1933.

H. G. KINNEY SCORING MACHINE Filed Aug. 21. 1930 5 sheets-sheet 3 vENjr-oR ATTORNEY Oct. 10, 1933.

H. c. KINNEY SCORING MACHINE 5 sheets-sheet' 4l Filed Aug, 2l. 1930 Oct. 10, 1933. H. c. KINNEY SCORING MACHINE Filed Aug. 21, 1950 5 Sheets-Sheet 5 IENT'OR 'ATTORNEY Patented Oct. 10, 1933 sc oaING MACHINE Harmon C. Kinney, Ambler,` Pa., assigner, lbymesne assignments, to & Sheathng Company Sylvania Ambler As'l'iestosv 'Shingle a .corporation'of Benn- Appiic'aon august 21', 1930., vserai No'. 476,807

' 11V Claims.

This invention relates to scoring machines, and more particularly to those adapted to groove a surface with a series of parallel lines vat one operation.

While the particular purpose of thepresent invention is to produce the" appearance of ,hand laid tiling on a vitrified or other hard surfaced slab or plate of material, it will be understood that the mechanism is adapted to many other uses where a checkered surface is desired.

It is an object o'f this -invention to provide a mechanism adapted to operate `on the surface .of hard nished slabs of asbestos cement and the like, fully cured, dried and permanently set.

A further object is in the provision of means for maintaining the scored grooves uniformly spaced and of equal depth and width, irrespec tive of superficial unevenness'or undulations of the slab, and without scratching or defacing its iinish.

Another aim is to provide means for facing the edges of a slab, coincident with-the 'grooving operation, and in such manner as to be parallel with the scoring so that accurate edge joints are produced. Y v

A still further purpose is to provide supports for the rotary cutters, so arranged as to resist lateral strain in an unusually eii'ective manner.

These and other advantageous objects, which will appear as the description progresses, are accomplished by the novel design, construction and combination of parts hereinafter described and illustrated in the accompanying drawings, forming'a material part of this disclosure, and in which j Fig. 1 is a top plan view of an embodiment of the invention as assembled for operation, parts being broken to show the construction.

Fig. 2 is a front side elevational view'of the same, showing the dust removing'device. l

Fig. 3 is an enlarged fragmentarylongitudii nal sectional view, taken on line A3-3of Fig. 1^.

Fig. 4 is a fragmentary transverse sectional view taken on line 4 4 of Fig. 1, `showing the cutter adjusting means.

Fig. 5 is a transverse sectional view of the edge trimmer cutter and associated parts.`

Fig. 6 is a longitudinal sectional View of the cutter depth control device takenon line 6-6 of Fig. 3.

Fig. '7 is a similar sectional view of the cutter spindle supports showing vtheir construction, the section being taken on line 7A? of Fig. 3.

Fig. 8 is a fragmentary. sectional view, taken on line 8-8of Fig. V1,showing the slab clamping device on, enlarged. scale.

Fig. 9 is a-similarysectional view taken on line Q3-9 of Fig. -1, showing thecutter raising means at the rearward movementof the slab.

Fig. lois a schematic view, ;illus trating the method of trimming -the edges ,of the slab.

Fig. 11 is an enlarged sectional YView of the slab, taken on line l1-11 of Fig. .f13. I Fig. 12 -is-a plan View of a slab, showing longitudinal grooves as Vproduced by the irst operation, and i,

Fig. 13 4vis asimilar viewv of the slab `after the second operation. In the embodiment of the invention shownin the drawings the machine consists of a heavy oblong rectangular bed 15 Vhaving a flanged base and at its upper longitudinal edges guide grooves 16to receive a platenlfmoved by a 'helical screw 18 journalled in the ends ofthe bed. This screw is driven by bevelled gear pairs -19 land -20 the latter being mounted on the -outerend of ya spindle .projecting through the v-side of the bed andV in turnY being driven by a reversible electric 'motor 2L mounted on the side ofthe bed. A motor control box 22 has an actuating'lever23-moved by a bar 24, slidably arranged in brackets25 xed on the upper iront edge of the bed, and lprovided with a hand actuatinglever 26 pivoted-tothe bed and arranged for convenient operation -in'reversing the direction of movement of the platen vr17.

. Rigidly engaged on the frontjof the bed-15 is an upright post 28, an essentially similar post 29 being provided on the opposite side ofthe bed. Mounted in undercut guidefways 30-31-of these posts are vertical slides 3 -2 -q33, actuated by screws 34 provided with-hand wheels 35. f Fixed to the slides, toextend rigidly therebetween, is a hollow horizontal beam 36 having adjustabl-y-engaged :a plurality of downreaching brackets'?, and a similar series ost-forwardly extendingsbracloets38. Y. l

` `ltotatably mounted in the ends of the brackets 38 isa transverse-shaft 39, carrying atspacedim tervals aseries of grooved pulleys 40. Mounted in the lower ends of the brackets 37 vis another shaft '4l to which are rigidly attached -dogs 42 carrying transverse bars 43, through whichpasses a `series of adjusting screws A44, their points im- Y pinging on lugs 45 formed on rearwardly extend` ing bars 46, journalled onshaft V411 land carrying at their outer ends spindlesf47, which will be further on described in greaterdetail.

Passingtransversely through Vtheends of the bars A46 are sleeves 50, (see Figs. 4 and 6), held against motion by set screws 51, provided at their lower ends with enlarged portions 52 abutting the underside of the bars 46 while their upper ends are screw-threaded to receive cap nuts 53. R0- tatably mounted in the sleeves 50 are spindles 54, reduced at their upper ends to which are secured knobs adapted for hand operation. Formed on the spindles 54 are collars 56 clamped against the upper ends of the sleeves 50 by the cap nuts 53 in such manner as to prevent the spindles moving longitudinally, but permitting them to be rotated.

The lower end of the spindles 54 are bored and screw-threaded to receive screws 57 formed on the upper ends of stems 58 projecting outwardly below the sleeves 50 and terminating in forks 59 in which are rotatably mounted rolls 60, the forks being offset forwardly so that the axes of the rolls 60 are in advance of the axes of the.

spindles 54, as best seen in Fig. 3.

Returning now to the shaft 41 and bars 46, it will be seen that pinned, or otherwise rigidly engaged atv fixed spaced intervals to the shaft, are-hubs 61 arranged in reverse relation, having flanged opposed faces 62, preferably recessed as shown, and against these flanges abut opposed hubs 63 formed on the bars 46, these hubs being bored to receive conical roller bearing races 64-65, respectively, onl their inner` and outer sides, the races 64 being internally recessed to receive tapered rollers 66, while the races 65 are plainly conical to receive similar rolls.v

The inner core members of the roller bearings, respectively 67-68, are close fitted to the shaft 41, the members 67 being annularly groved to receive the rollers 66 while the opposed members 68 are plainly conical. Screwed to the inner adjacent faces of the hubs 63 are washers 69 abutting the races 65 to maintain them in position, while the races 64 abut in a similar manner the flanges 62 of the fixed hubs. Y

Adjustably on the shaft 41 are collars 70-71 having inter-engaging screw-threaded elements, whereby upon rotating the element 70 with respect to the opposite element 71, the collars may be adjusted so that their outer faces, which bear against the races 67, force them outwardly carrying the rolls 66 with them and affording an accurate relative adjustment.

The outer roller bearings are kept tight by the interposition of coiled compression springs 72, encircling theV shaft 41, so that an equal pressure of the bearings on the shaft is adjustably maintained.

At the outer end of the bars 46, the spindles 47 are journalled in bearings which correspond identically to'those previously described, adjustment in this case being obtained, however, in a slightly'diierent manner. Fixed on a reduced end portion 74 of the spindles 47 are thin abrading wheels 75, held between clamp washers 76 by nuts 77 threaded on the ends of the spindle against collars 78 abuttingthe spindle shoulder, these washers in turn being held by plates 79 screwed to the adjacent sides of the bar, while on opposite sides are similar plates bored to receive the hubs of pulleys 80 driven by beltsA 81 run over the driving pulleys 40 on the shaft 39.

Adjustment of the spindle 47 is obtained by nuts 82 threaded on the opposite end of the spindles 47, and suited to draw the hubs of the pulleys 80 against the inner elements of the roller bearings, as plainly shown in Fig. 7. The shaft 39 is driven through flange connections 83 with the shaft of a motor 84, carried by a bracket 85 fixed to the slide 33, opposite the beam 36, as best seen in Fig. 1.

The spindle 58 is so adjusted that roller 60 bearing upon the thin flexible strip 86 will guide the cutting disk to the proper depth of scoring, but without contact of the roller with the surfacejslab. The roller 60, therefore, does not follow all of the minute irregularities of the slab surface, but only such average variations as will be conformed to by the exing of the thin strip 86. These strips 86 are raised and cleaned at each operation, being joined together for movement as a unit by the transverse bars 87 at their ends, one of which bars is provided with a handle 87. These thin strips also guide the dust from the abrading wheel causing irregularity in guiding or, scratching or marking on the smooth faces of the slabs.

The movements of the grinding wheels 75 to and from the slab are along arcuate lines around the axis of the shaft 4l as a center, such movement being substantially inclined forward in the direction of progress of the cutting wheel relative to the slab during the grooving operation. Theaxis `of adjustment of xthe spindle 58 for roller 60 is `correspondingly inclined forward at somewhat the same angle with relation to the slab, this forward inclination aiding in giving the guiding and cutting actions smoothness and accuracy in operation.

The slabs X are held on theplaten 17 of the machine at one end by clips 88 fastened to the platen surface, and at the other end by clips 89, having stems 90 passing downward through a guideplate 91 (see Fig. 8) fixed in a slide 92 movable lengthwise at the end of the platen, and having mounted at its outer end a spindle 93.

`Rotatable on the spindle is an eccentric head actuated by a lever 95, this head having a raised element 96 engaging in a corresponding slot in a clamp slide 97V movable freely in the lower part of the element 92, and having at its forward end .a raised portion 98 of parallel thickness adapted to engage in openings 99 of the stein 90, these openings being rounded from top to i bottom.

From the foregoing it will be understood vthat upon movement of the lever 95 the clips 89 may be released or drawn powerfully downward, clamping the work firmly in position on the platen. Y

In order to trim the side edges of the slabs in parallelism with the grooves formed by the abrading Wheels, a pair of opposed motors 100 are mounted upon transverse slides 101 held in undercut recesses in the rear sides of the uprights 284-29, these slides being adjusted by screws 102 actuated by hand wheels 103.

Carried by the motor shafts are thin abrading wheels 104, these wheels being considerably in excess of the diameter of the wheels 75 and are preferably provided with guards 105.

It is to be noted that the edge trimming wheels are each adjustable in position laterally relative to the grove XI as apparent in Fig. 10 in which the grooves XI, made by the wheels 75, are bisected by the wheels 104, so that the joints between adjacent slabs are formed at the bottoms of the grooves, which, by reason of being ground simultaneously cannotV vary in any manner.

If desired a suction tube 106 may be arranged over the grooving wheels so that a'forced suction effect is produced, removing the dust of the grinding in an effective manner.

In order to raise the scoring wheels during irs VIl() reverse movement, shaft 41 has secured to it a rigid arm 110 carrying at its end a roller lll positioned to ride in a notch 112, formed in the upper surface of the bar 24 when the bar is in position corresponding to the forward movement of the platen, but when it is reversed the bar 2li moves to force the roller up on the top of the bar, thereby tipping shaft 4l an 'the pawls i2 so that pins ,44 engage arms 45 to raise the several abrading wheels above the surface of the slab, this operation taking place automatically upon movement of the lever 26 and before the return movement begins. Nhen the scoring has been completed, as seen in Fig. 12, the slab is removed and replaced on the platen in a position at an angle to the rst position, thereby producing a desired cross line effect such as that indicated in Fig. 13.

Accurately maintained alinement of the scoring wheels insures a grooving that is precise within very narrow limits so that the various slabs produced at diierent times may be arranged edge to edge with a very close alinement of the score lines and the appearance of substantial continuity, thus avoiding any accentuation of the lines of joinder between adjacent slabs and the irregularities that would be very evident in the attempt to register lines even a very little out of place. The accuracy of registering the grooving of the slabs made by this machine is so precise as to leave practically no observable differences at the joints.

As changes of construction could be made v within the scope of the invention, it is intended that all mattei' contained in the foregoing description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

I claim:

l. In apparatus for scoring a series of parallel lines on slabs and the like, the combination with means for holding the slab, of means for positioning the grinding wheels accurately with relation to each other and maintaining said alinement, means for producing relative movement between the slab holding means and the grinding wheels, and means for guiding said wheels to give a predetermined depth of scoring comprising a flexible member on said slab and a guide roller moving along said member and determining the depth of the cut.

2. A slab scoring machine comprising a horizontal bed, a platen slidable therealong means to actuate said platen in opposite directions selectively, means to clamp a work part thereon, a series of spaced abrading wheels to score the work part when moving in one direction, and means to automatically raise said wheels when the platen is moved in an opposite direction.

8. A slab scoring machine comprising a hori- Zontal bed, a platen slidable therealong in either of two directions, a manually operable shift bar controlling the direction of platen movement, releasable means to clamp a slab on the platen, abrading wheels to score the slab when the platen moves in one direction, and means actuated by said bar to raise said wheels collectively above the surface of the slab when the platen is moved in a reverse direction.

4. A slab scoring machine comprising a horizontal bed, a platen slidable therealong in either of two directions, a manually operable shift bar controlling the direction of platen movement, releasable means to clamp a slab on the platen,

abrading wheels to score the slabv when the platen moves in one direction, brackets carrying said wheels, a shaft' on which all of said brackets are fixed, means operated by said barfor imparting semi-rotation tosaid shaft whereby the wheels are raised and lowered in unison, and means for adjusting said wheels independently.

5. A slab scoring machine comprising a horizontal bed, a platen slidable therealong in'either of two directions, a manually operable shift bar controlling the direction of'platen movement, releasable means to clamp a slab on vthe platen, abrading wheels to score the slab when the platen moves in one direction, brackets carrying said wheels, a shaft on which all of said brackets are fixed, means operated by said bar for imparting semi-rotation to said shaft whereby the wheels are raised and lowered in unison, and means for adjusting said wheels in conformity to the surface of the slab.

6. A slab scoring machine comprising a horizontal bed, a platen slidable therealong in either of two directions, a manually operable shift bar controlling the direction of platen movement, releasable means to clamp a slab on the platen, abrading wheels to score the slab when the platen moves in one direction, means for adjusting the depth of cut of said wheels with resepct to the surface of the slab, automatic means for raising the wheels upon reversal of platen movement, and wheels of larger diameter to trim the edges of the slab simultaneously with the operation of the scoring wheels.

7. In a slab scoring machine having a platen reciprocatively mounted, motor means for actuating said platen in either direction, a shiftable bar controlling the movement of the motor, manual means for actuating said bar, said bar having a recess in its upper surface, a plurality of abrading wheels mounted to be raised and 11:5 lowered, and a lever controlling the movement of said abrading wheels, said raising and lowering means being' actuated by said bar.

8. In a slab scoring machine having a horizontal platen and means for actuating said platen L reciprocatively, of a beam extending over said platen, a motor driven shaft mounted on said beam, a pivot shaft, a plurality of brackets rigidly fixed on said shaft, abrading wheels rotatable in said brackets, a series of removable strips disposed over slabs fixed on said platen, and rolls carried by said brackets to move over the surface of said strips whereby said Awheels are automatically raised and lowered in accordance with the surface of the slab.

9. In a slab scoring machine, in combination with a bed having a platen slidable in a horizontal plane, means for moving said platen in either of two directions, means for clamping a slab on the platen, brackets extending upwards from over said bed, slides movable vertically inl said brackets, a beam carried by said brackets to extend over the platen, a series of abrading wheels carried by said beams at fixed distances apart, means for driving said wheels, automatic 1 means for raising and lowering said wheels with reference to the slab and in accordance with its upper surface, means for raising said wheels above the slab upon reverse movement of said platen, a pair of abrading wheels adjustable with reference to the track of the outermost scoring wheels, and means for driving said last named wheels to trim the slab centrally of the outermost grooves formed by the first named wheels.

10. The combination with a slab scoring ap- 150 scoring Wheels, arms pivoted on an axis parallel to the surface of the slab and carrying said Wheels, a separate support on each arm carrying a Wheel in position to engage the surface of the slab immediately adjacent to the corresponding Wheel and raise yor lower said Wheel in accordance with the shape of the adjacent surface so that each Wheel will follow the contour of said surface along its own line, and means for individually rotating each of said Wheels.

HARMON C. KINNEY.

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