US1280798A

US1280798A - Card-clothing-trimming machine.

Info

Publication number: US1280798A
Authority: US
Inventors: Herbert Midgley
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-01-29
Filing date: 1917-01-29
Publication date: 1918-10-08
Anticipated expiration: 1935-10-08

Description

H. MIDGLEY. CARD CLOTHING TRIMMING MACHINE.

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Patented Oct. 8,1918.

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H. MIDGLEY.

CARD CLOTHING TRIMMING MACHINE.

APPLICATION men JAN. 29. m7.

H. MIDGLEY.

CARD CLOTHING TRIMMING MACHINE.

APPLLCATION HLED JAN. 29, I9-ll- Patented Oct. 8, 1918.

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HERBERT MIDGLEY, or WORCESTER, MASSACHUSETTS.

CARD-CLOTHING-TRIM MIING MACHINE.

Specification of Letters Patent.

Patented Oct. 8, 1918.

Application filed January 29, 1917. Serial No. 145,244.

To all whom it may concern:

Be it known that I, HERBERT MIDGLEY, a citizen of the United States, residing at WVorcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Card-Clothing-Trimming Machine, of which the following is a specification.

This invention relates to a machine for trimming the edges of card clothing uniformly on both sides; measuring the amount trimmed, and also slitting the upper surfaces when that is desired for certain classes of work or splitting it in two.

The principal objects of the invention are to provide improved simple means for accomplishing these operations in an expeditious manner; and more specifically to provide an improved measuring device by which the card clothing is positively measured, as it goes through the machine, and the edges of the clothing are held down on the measuring roll so as to avoid any possibility of its not lying evenly thereon, and therefore not being registered; to provide a simple and convenient form of guiding arrangement adjustable for different widths of card clothing, and provided with means for holding the edges or margins, and also the center, down on the table; to provide an adjustable improved device for cutting the edges continuously as the card clothing passes along the machine and means for operating it in its adjusted position, and also to provide a convenient means for slitting the upper surface of the card clothing between the rows of wires to render it suitable for certain classes of work, or splitting it in two. Further objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Figure 1 is a side elevation of a machine constructed in accordance with this invention;

Fig. 2 is a plan of the same with parts shown in section;

Fig. 3 is a sectional view on the line 33 of Fig. 2, showing the edge trimming mech anism in elevation;

Fig. 4 is a sectional view on the line 4-4 of Fig. 2, showing the plow for holding the card clothing down in the center;

Fig. 5 is a sectional view on the line 55 of,Fig. 2, showing the measuring device;

Fig. 6 is an end view, showing where the card clothing enters the machine;

Fig. 7 is a plan ofthe table or bed of the machine immediately under the trimming device;

Fig. 8 is a sectional view of the same on the 1ine88 of Fig. 7;

Fig. 9 is a sectional view on the line 9-9 of Fig. 2, showing the slitting device; v

Fig. 10 is a plan of the modified form of edge trimming mechanism, and

Fig. 11 is an end view of the same looking in direction of arrow 11in Fig. 10.

Card clothing is usually handled by hand and is trimmed in ordinary practice by means which involve hand work solely. On account of the wire teeth which project from the surface it presents some difliculty in the handling. This undoubtedly accounts for the fact that machinery has not been designed heretofore, as far as I am aware, for handling it in quantities, and virtually doing away with the hand operations which are in common use in factories for making card clothing.

This machine is designed to do away with the hand work largely and to make use of the construction of the card clothing itself for guiding it through the machine and permitting of the performance of the necessary operations continuously and without hand labor.

In this machine as illustrated in the drawings, the card clothing is drawn through by hand instead of being fed through mechanically. This is desirable because the man who pulls it through the machine can thoroughly inspect it during that operation. I have made use of the fact that the margin which is to be trimmed ofi' projects just beyond the line of teeth on both sides and I guide the card clothing by this margin both laterally and vertically, in other words, I hold it down on the table along which it is fed by locating guides just above this margin. I also provide means for holding it down in the center between two rows of the teeth.

Referring to the drawings, in detail, it will be seen that the machine is Shown in a form embodying a frame having a flat table 10 for receiving the card clothing A and supporting it throughout the operations performed in this machine. A strip of card clothing enters at the left end of this table over a supporting rollv 11, and under a weighted top roll 12 which bears on the teeth of the card clothing and holds it down on the roll 11 so that it passes on the table 10 in a flat and uniform condition. weighted roll is free to rise and fall in vertical guides 9. The card clothing then passes along and in contact with the table between two

guides

13 and 14. The guide 13 on the left hand side, is preferably removably fixed in stationary position. The guide 14 is mounted on an adjustable plate 15 which is adapted to be moved back and forth along a fixed guide 16 and a headed thumb screw 17 passesinto the table through a slot in the plate 15, for fastening it in adjusted positions. It will be noticed that two pairs of these guides 13 and 14'are shown. Although the guides 13 are not shown as adjustable, they are shown as removably attached by means of headed thumb screws 18 the same asthe screws 17 but having no slot for adjustment. These

guides

13 and 14 are shown as provided with inwardly projecting top plates 20 spaced from the table so as to project over the margins of the card clothing on both sides and hold them down.

The second pair of

guides

13 and 14 are provided with another means for holding the card clothing down on the table. is shown in the form of an arch 21 carried by the guides for supporting a plow 22. This plow is thin and has a flat lower sur face adapted to rest on the surface of the card clothing, between two rows of teeth and to hold it down throughout a long distance. The plow is adjustably secured to the arch 21 by a thumb screw 23 and the whole is adjusted sidewise to provide for different widths of card clothing by means of fastening screws 25 and slots in the arch 21 through which these screws are secured. The arch is manipulated by means of. a handle 24.

Although the first guide 14 is shown as adjusted by hand and held in adjusted position by the thumb screw 17, the second guide 14 is desired to be adjusted with more fineness. For this purpose a screw 26 is attached to it, and a nut 27 mounted on the screw has a circumferential groove therein held by a projection 28 extending from the table. Thus the guide 14' can be adjusted back and forth with any desired degree of nicety. This guide of course is shown as secured in adjusted position by a thumb screw 17 as in the other case.

Theholding down plates 20 have to be raised and lowered to accommodate card clothing of different thickness. For this purpose each one of them is provided with This 7 This As the card clothing passes from the first pair of these guides. to the second it is measured. importance because it has been a matter of considerable trouble heretofore in' this in dustry on account of the pecularities of this product. The measuring in this case is performed by a measuring drum 34 mounted on a shaft 35 below the table, this shaft being connected with a counting device 36 of any desired character so that itregisters according to the rotation of the drum. This drum is provided with longitudinal corrugations to prevent slipping and secure an accurate measure of the card clothing passing over the drum and supported by it.

The table 10 is provided with parallel posts 37 which have blocks 38 thereon, held down by springs 39 and supportinga cross shaft 40. This'shaft has on it a pair of smooth wheels 41 held apart by a' spring 42 on the shaft and adapted to rest on the margins of the card clothing so as to hold the same down at the sides on the measuring drum 34. When the end of the card clothing is drawn over the drum 34 it would have a tendency to spin it and register an excessive amount. To prevent this a friction member 35 is fixed on the shaft 35 to engage the underside of the table. It will be noted that the thin projections 33 of the guides 20 are shown in Fig. 5 as extending between these two wheels for the purpose of holding the card clothing down until it reaches the wheels, to provide for guiding the material as near these devices as possible.

On the table 10 is located a plate 43, from which extend uprights 44 one above the table and the-other below it. These carry a pair of slides 45 which are adapted to be adjusted toward and from the table in a vertical direction by screws 46 carried by the uprights 44. On each of these slides is adjustably mounted a knife carrying frame 47 shown in the form of a cylindrical body having an offset end. Each "frame is provided with a rack 48 which a pair of This measuring is a feature of pinions 49 are adapted to move back and "fastening screw '59. In this way both the knife carrying frames 47 are adjusted back and forth simultaneously and equally. Each of these frames 47 carries at its outer end a head 52 on which is rotatably mounted a hollow arbor 53 and a circular trimming knife 54 is secured thereto. A corresponding knife 54 is mounted concentrically therewith, and fixed on a shaft 55 supported by the slide 45.. This shaft is slidably splined to the hollow arbor on which the knife 54 is carried, so that the two

knives

54 and 54 necessarily rotate together, independently of the adjustment of the former.

It will be understood that these parts are duplicated below the table. The two

knives

56 and 56 below the table are arranged in the same way. In the form shown, the two lower knives are arranged with outer fiat surfaces and inner conical surfaces, while the

upper knives

54 and 54 are arranged in the opposite way, their inner surfaces flat, and their outer surfaces conical. In this way the two flat surfaces of a cooperating pair of knives come together and operate to trim ofi' the margins of card clothing.

It will be seen'again that the thin holding down projections 33 on the guides 20 extend just inside the cutters and are of a very slight thickness to get the amount of margin desired at the sides of the teeth after the trimming is completed. By adjusting the guides up into contact with the cutters the product will necessarily have exactly the exact width of margin desired at this point. The plow also projects between the knives to hold the material down positively at the instant of trimming.

For the purpose of operating the trimming device a main shaft 60 is shown receiving power from any desired source. By means of sprocket wheels and chains 61 this drives the pair of shafts 55. On account of the flexible drive, the cutters can be adjusted without interfering with the operation.

The motion of the

outer cutters

54 and 56 for adjusting purposes is also taken advantage of to perform another function. For this purpose the head 52 is provided with a bracket 63 extending downwardly and engaging between two projections 64 on a plate 65. This plate and another plate 66, which corresponds with it, is located in a slot 67 in the table. These, plates are mounted on

supports

68 and 69, the latter being fixed and the former adjustable. The plate mounted on the support 68 isadjusted by the movement of the head 52. Screws 70 are shown for securing each plate to its

support

68 or 69, These

plates

65, 66 are provided with slots 71 for receiving the cutters. It is found in practice that these slots wear, and that is the reason for making the plates detachable. It is to be observed also that these plates are provided with perforations v72 which are designed for receiving the waste trimmed off the edges of the card clothing and guiding it down into a discharge chute 73.

The driving chain 61 in addition to driving the shafts 55 also engages a sprocket wheel 74 on a shaft 75 for driving it. This shaft is mounted on a support 76 which can be adjusted up and down by a. screw 77 and secured in adjusted position by a screw 78 and which is supported by a bracket 79 on the table. This shaft 75 is provided with washers and nuts 80 and collars 81 for Se curing thereon one or more circular knives 82. One object of these knives is to slit the surface of the foundation of the card clothing longitudinally to facilitate its use for certain purposes particularly where it is to be wound on a small roll. The slitting provides additional flexibility, and often three slits are required along the article. In this case the shaft 7 5 is adjusted so that the slitting knives 89. do not extend all the way through the foundation, but when it is desired to split it into two or more separate parts the shaft is adjusted lower and in that case the knife comes down and cuts against a wooden block 83 adj ustably supported by a screw 84 in a casing 85 under the table and projecting to the top surface thereof. In this way after the top of this block is cut into and smoothed off it can be adjusted up to a higher position.

It will be observed that although I refer above only to two pairs of guides there is an additional pair 13 14 between the trimmers and the slitter also provided with a plow, but not provided with the plates 20 because at that time the margin has been removed or all except a very small part of it. Also a pair of

guides

13, 14 are shown at the discharge end of the machine through which the material is drawn. I

As the machine has been described in the order in which the steps of the operation take place, no detail description of the operation is necessary. It is sutlicient to say that the card clothing is threaded through the machine and pulled through by hand as the machine operates, the waste being automatically taken care of as stated, and the result inspected by the operator as he pulls the finished product through. It will be understood of course that the slitting or splitting can be dispensed with if desired without affecting the other parts of the machine.

The modification shown in Figs. 10 and 11 is designed especially for a type of card clothing of comparatively large size and it has been used in practice for cardclothing coming in pieces several feet long and several inches wide. It is designed, however, for trimming purposes alone. The details of the mechanism for driving it are not shown herein and it is to be understood that it is operated by pushing and drawing the material through as describedin connection with the first form .of the machine.

In this case the table 90 for supporting the card clothing is provided with guides 91 on each side, that on the right being shown as adjustable by means of thumb screws 92 adapted to be applied in any one of a series of holes 93. These guides are provided with plates 94: which are adjusted -up and down by handles 95 like the handles 31 described above, details of this adjustment not being shown in full. These plates 94 extend out considerably into the machine because the card clothing adopted here has a very wide margin and it is practical to provide wide flat plates for'holding the margins down, which are suflicient in this case. They have extensions 96 for the same purpose as the extensions 33, but passing beyond the cutters and holding the card clothing down after it is trimmed as well as before.

The supporting means for the cutters need not be described as it isthe same as in the other case, the cutters here, however, being driven by gears 97 instead of chains because no such range of adjustment vertically is contemplated.

There is an important difference in the cutters themselves. The cutters 98 are arranged substantially the same as the cutters 54 in theother case, but underneath them are two cutters 99 which, as in the other case, out on their outside edges but are provided with cylindrical surfaces which support the edges of the card clothing under the plates 94. It will be observed of course that the table itself supports the back of the card clothing at points betwen these cutters. It will be seen therefore that in this case the lower cutters themselves assist in supporting V the card clothing, paricularly the edge that is being ,cut. The various adjusting and clamping means for the knives and cutters are not described in detail as it is not materially difierent from that shown in connection with the other part of the case.

It will be seen therefore that in both forms of the invention shown I have taken advantage of the existence of the margins to provide for guiding and holding the card clothing in proper position before and during the trimming operation; that I provide a machine in which the several operations described can be performed with great speed and withoutattention to the particular operation of the various parts except to adjust them before the operation is started;

and that in this way the production can be greatly increased and in fact improved, for there is less danger of spoiling the piece than by the old hand methods.

Although I have illustrated and described only two forms of the invention I am aware of the fact that other modifications can be made without departing from the scope of the invention as expressed in the claims. Therefore I do not wish to be limited to all the details of construction herein shown and described, but what I do claim is 1. In a machine for cutting card clothing, the combination with a guide-way comprising a pair of longitudinally spaced parallel guides for receiving the card clothing between them with its teeth projecting up, a pair of plates projecting inwardly from said guides for engaging the tops of the margins of the card clothing close to the teeth, and means for cutting its margins beyond the teeth while locatedin the guide-way, of a roll for supporting the card clothing in position to pass into the guide-wa v, and a weighted roll over the first-named roll and freely movable up and down, said weighted roll being adapted to rest on the teeth of the card clothing and hold it down in the guideway so as to force its margins down under said plates as it enters the machine.

2. In a machine for cutting card clothing, the combination of a guide-way comprising a pair of longitudinally spaced parallel guides adapted to receive the card clothing with the points of its teeth extending upwardly, a pair of plates projecting inwardly from said guides for engaging the tops of the margins of the card clothing close to the teeth, a freely movable weighted roller adapted to rest on the points of the teeth and located in position to hold the card clothing down in the guide-way so as to force its margins down under said plates as it enters it. i v

3. In a machine for cutting card clothing, the combination ofa pair of longitudinal parallel guides between which the card clothing is adapted to be drawn, a pair of separate plates mounted on said guides and projecting inwardly for engaging the tops of the margins of the card clothing close to the teeth thereof, and means for adjusting said plates up and down on the guides.

4.. In a machine for cutting card clothing, the combination of a pair of guides for engaging the opposite edges of the card clothing and having upwardly extending portions provided with inclined slots, screws extending through said slots, a top plate on the inside of each of said guides supported by said screws for engaging the tops of the margins of the card clothing, and means for fastening said screws in adjusted position to regulate the height of said plates;

5. A machine for cutting card clothing having a guide-way comprising guides for 6. In a machine for cutting card clothing, the combination of a guide-way, stationary inwardly projecting plates spaced from the bottom for projecting over and engaging the upper surfaces of the margins at the extreme edges of the card clothing, and means sub stantially in alinement with the guide-way for cutting the card clothing as it emerges from extreme inner surfaces of said plates.

7. In a machine for cutting card clothing, the combination of a table over which the card clothing isadaptedtotravel, a longi tudinal guide fixed to the table for guiding one edge of the card clothing, a similar guide adjustably connected with the table for guiding the other edge of the card clothing,

a screw for adjusting the second guidetransversely, means for holding it in adjusted position, and plates extending inwardly from both guides for engaging the, tops of the margins of the card clothing and holding them down onv the table 8. In a machine for cutting card clothing, the combination of a table, and means for engaging the card clothing at a point between its sides and holding. its back down on the table, said means comprising a longitudinal plow projecting downwardly and adapted to rest between two rows of teeth on the card clothing.

9. In a machine for cutting. card clothing, the combination of a table, guidesthereon for the card clothing, said guides being adapted to guide the edges of the card clothing, inwardly projecting plates spaced from the table the thickness of the back of the card clothing to engage over its margins and hold its extreme edges down on the table, whereby the card clothing can be drawn through the guides, and stationary means supportedabove the guides and extending down between two rows of teeth for engaging the card clothing at a point between it sides and holding its back down on the table.

10. In a machine for cutting. card clothing, the combination of a table,guides thereon for the card clothing, inwardly projecting plates spaced from the table the thickness of the back of the card clothing to engage over its margins and. hold it down on the table, and means supported above the guides for engaging the card clothing at a point between its sides and holding its back down on the table, said means comprising a frame extending upabove the table, and a longitudinal plow projecting downwardly therefrom and adapted to restbetween two rows of wires on the card clothing.

11. In a machine for cutting card clothing, the combination of a table, guides thereon for the card clothing,inwardly projecting plates spaced from the table the thickness of the back of the card 0 othing to engage over its margins and hold it down on the table, a

frame extending up above the table, a longitudinal plow projecting downwardly therefrom and adapted to rest between two rows of teeth on the card clothing for, holding it down, and means for adjusting the plow laterally. 1

12. In a machine for trimming card clothing, the combination of a pair of guides'for receiving. the card clothing between them, a top plate carried by each guide, said top plates projectingv inwardly toward each other for-engaging the tops of the margins of the card clothing and holding it down, and cutters located at the discharge end of said guides for trinnning the margins of the card clothing, said top plates having projections extending just inside the lines of cutting and at the sides of the toothed part of the card clothing to hold the card clothing down between them and space the cutters from the wires of the card clothing.

13. In a machine for trimming card clothing, the combination of a pair of guides, a plate carried by each guide and projecting inwardly toward each other for engaging the tops of the margins of the card clothing and holding it down, cutters for trimming the margins of the card clothing, said top plates having projections extending just inside the cutters to hold the card clothing down between them and space thecutters from the wires of the card clothing, and a longitudinal plow supported over the card clothing and adapted to engage between two rows of teeth said plow projecting to a 100 point between said cutters for holding the center of the card clothing down until the trimming operation is finished.

14. In a machine for cutting, the combination of a table, guides thereon, a frame 106 extending up above the table, a longitudinal plow projecting downwardly therefrom and adapted to rest on the material for holding it down, and means for adjusting the plow laterally.

15; Ina machine for trimming card clothing, the combination of a supporting table, guides located on said table for guiding the edges of the card clothing longitudinally, said table having an opening there'through, 1T5 apair of. supportsrlocatcd in said opening, and plates detachably secured to said supports and flush with the top of said table, said plates havingslots therethrough, a pair of rotary outting 'knives extending upwardly 12 0 from below the table throughsaid slots, and a pair of rotary cutting knives cooperating therewith and extending downwardly from above'for trimming the edges of the card clothing.

16, Ina trimming machine, the combination of a supportingtable having. an opening therethrough, a plate located in said opening having a slot therethrough. a rotary cutting knife extending upwardly from below the 130 table through said slot, a rotary cutting knife cooperating therewith and extending downwardly from above for trimmingthe edges of the material, one of said knives being transversely adjustable, and means whereby said plate can be adjusted with the adjustable knife.

17. In a machine for trimming card clothing, the combinatiton of a supporting table having an opening therethrough, a pair of plates located in said opening having slots therethrough, a pair of rotary cutting knives extending upwardly from below the table through said slots, a pair of rotary cutting knives cooperating therewith and extending downwardly from above for trimming the edges of the card clothing, one upper and one lower knife being transversely adjust able, and means whereby the corresponding one of said plates can be adjusted with the adjustable knives.

18. In a machine for trimming card clothing, the combination of a table for supporting the card clothing, a frame thereon, two supports carried by said frame and adjustable Vertically thereon, a pair of parallel shafts carried by said supports, a cooperating pair of cutters mounted in fixed position on said shafts, and a second pair of trimming cutters operated by said shafts and adjustable longitudinally thereon. 7

19. In a machine for trimming card clothing, the combination of a table for supporting the card clothing, a pair of parallel shafts, a cooperating pair of cutters mounted in fixed position on said shafts, a second pair of trimming cutters operated by said shafts and adjustable longitudinally thereon, sliding frames having bearings thereon for supporting the last-named pair of cutters, both of said slides having racks thereon, a shaft, and a pair of pinions on said shaft for operating said racks and simultaneously moving the sliding frames. I

20. In a machine for trimming. card clothing, the combination of a table for supporting the card clothing, a frame thereon, a support carried by said frame and adjust able vertically thereon, a pair of parallel shafts carried by said frame, a cooperating pair of trimming cutters mounted in position on said shafts, a second pair of trimming cutters operated by said shafts and adjustable longitudinally thereon, sliding frames carried by said support having bearings thereon for supporting the lastnamed pair of cutters, both of said sliding frames having racks thereon, a shaft, a

/ pair of pinions on said shaft for operating said racks and simultaneously moving the sliding frames, and additional means for finally adjusting the position of said slides and the cutters carried thereby.

21. In a trimming machine, the combina tion of a table for supporting the material,

a shaft, a cutter mounted in fixed position on said shaft, a hollow arbor rotatable with but slidablc along said shaft, a second trimming 7O cutter on said arbor and adjustable longitudinally therewith, a sliding frame for adjusting the last-named cutter, and means for moving the sliding frame.

22. In a machine of the character described, the combination of a table for receiving the card clothing, means for holding down the edges of the card clothing in contact with the table, two pairs of rotary cutters for trimming the edges of the card clothing, and means for cutting part way through the foundation of the card clothing between the rows of wires. 7

23. In a machine of the character described, the'combination of a table for receiving the card clothing, two pairs of rotary cutters for trimming the edges of the card clothing, and means for cutting a material part of the way through the foundation of the card clothing between the rows of wires to render the card clothing flexible, said means comprising a shaft independent of said rotary cutters, and means mounted on the shaft for supporting one or more outters thereon. V

24. In a machine of the character described, the combination of a table for supporting the card clothing, two pairs of cutters located adjacent to said table in position to trim the edges of the card clothing, a shaft located over the table, a cutter lo cated on the shaft in position to cut the card clothing longitudinally between two rows of teeth thereof, a set of guides between thefirst-named cutters and the lastnamed cutter for holding the card clothing down at its edges, and a plow located between said guides for holding the center of the card clothing down.

25. In a machine for cutting card clothing, the combination of a guide-waycom prising guides for the opposite edges of the card clothing, said guides having inwardly projecting plates spaced from the bottom for projecting over and engaging the upper surfaces of the margins of the card clothing close to the teeth thereof so as to guide it by its teeth, and means at the entrance of said guide-way for forcing the card clothing down on the bottom of the guide-way and holding its margins in position to enter under said plates.

26. In a machine for cutting card clothing, the combination of a pair of edge cutters, a series of pairs of longitudinal parallel guides between which the card clothing can be drawn in contact with said guides, certain of said pairs of guides being located on each side of the cutters and having means for engaging the teeth on the card clothing so as to guide the card clothing by said teeth after the edges are cut off by said cutters, all of said guides on each side being located in alinement with each other.

27. In a machine for cutting card clothing, the combination of a pair of edge cutters, a pair of longitudinal parallel guides located in position to guide the card clothing as it emerges from the cutters by engaging the opposite teeth thereof after the edges have been cut off, and means adjacent to the projecting ends of said guides for performing another operation on the card clothing while located between them.

28. In a machine for cutting card cloth ing, the combination of a pair of edge cutters, a pair of longitudinal parallel guides located in position to guide the card clothing as it emerges from the cutters by engaging the opposite teeth thereof after the edges have been cut off, and slitters arranged to slit the card clothing between its edges while the same is under the control of said guides.

29. In a machine for cutting card clothing, the combination of a pair of longitudinal parallel guides between which the card clothing is adapted to be drawn for guiding it by its extreme edges which engage said guides, a pair of plates mounted on the inner sides of said guides and adapted to engage the upper surface of the margins of the card clothing beyond the teeth, a pair of thin projections mounted on the inner sides of said plates to engage the teeth and space said plates from them slightly, and a pair of cutters arranged in alinement with the surfaces of contact between said plates and projections.

30. In a machine for cutting card clothing, the combination of a pair of longitudinal parallel guides between which the card clothing is adapted to be drawn having means on their inner surfaces for projecting over the edges of the card clothing and holding it down, said means extending nearly to the teeth thereof, a pair of edge cutters for trimming off the edges or margins of the card clothing while under the control of said guides, said guides being provided with thin projections extending between the cutters and substantially in contact therewith but spaced from the guides proper, whereby the teeth of the card clothing will be guided by said projections while the card clothing is being cut.

31. In a machine for cutting card clothing, the combination of a pair of longitudinal parallel guides between which the card clothing is adapted to be drawn having means on their inner surfaces for project ing over the edges of the card clothing and holding it down, said means extending nearly to the teeth thereof, a pair of edge cutters for trimming off the edges or margins of the card clothing while under the control of said guides, said guides being provided with thin projections extending between the cutters and substantially in contact therewith but spaced from the guides proper, whereby the teeth of the card clothing will be guided by said projections while the card clothing is being cut, a pair of guides on the delivery side of said cutters having their inner surfaces located substantially in alinement with the inner surfaces of said projections to engage the teeth of the card clothing and guide the trimmed card clothing thereby, and a slitting knife for slitting the card clothing between its edges while under the control of the lastnamed guides.

In testimony whereof I have hereunto ailixed my signature.

HERBERT MIDGLEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C.