US1342210A - Cloth-cutter - Google Patents

Description

. J. GOLDFARB AND B. SACKS.

CLOTH CUTTER.

APPLICATION FILED NOV. 7, I919.

Patented J 11116 1, 1920. I 2 SHEETS-SHEET I- 22 INVENTORS 44 1%,, x 4'0 70 75 aevwam 0X3 ATTORNEY N. J. GOLDFARB AND B. SACKS.

CLOTH CUTTER.

APPLICATION FILED NOV- 7,

Patented J me 1, 1920.

2 SHEETSSHEET 2.

ATTORNEY UNITED STATES PATENT OFFICE.

NATHAN J. GOLDFARB, F BROOKLYN, AND BERNARD SACKS, OF NEW YORK, N. Y.

CLOTH-CUTTER.

Specification of Letters Patent.

Patented June 1, 1920.

Application filed November 7, 1919. Serial No. 336,508.

To aZZ whom it may concern..-

Be it known that we, NATHAN J. GroLD- raun, a citizen of the United States, and a resident of the borough of Brooklyn, county of Kings, city and State of New ork, and BERNARD SAcKs, a citizen of the United States, and a resident of the borough of the Bronx, county of the Bronx, city and State of New York, have invented certain new and useful Improvements in Cloth-Gutters, of which the following is a specification.

The present invention relates to improve ments in cloth cutters, and particularly such cutters having a rotary cutting blade adapted to rotate in a vertical plane and out through a stack of cloth. An object of the invention is to provide in connection with the cutting blade, a pivoted foot embracing the blade and over which the cloth moves as it is cut, and means for swinging the foot upwardly at the end of the cut, raising the stack of cloth therewith so that the lowermost layer of cloth will be cut to the same extent as the upper layers, and which would not be the case if the cloth remained flat, as the end of the out would have the curvature of the circular cutting blade.

Other objects are to provide improved operating means for lifting the foot, which may be conveniently operated by the hand guiding the cutter, and means cooperating therewith to lift the guard normally protecting the edge of the cutting blade, so as to make room for the cloth as it is lifted. i further object is to provide slot means in the foot einbracing'the cutting blade which will normally provide a support for the cloth close to and in front of the cutting edge, but which will at the same time permit the foot to be raised without interference with the blade, and we further propose to provide such means which may be adjusted relatively to the cutting edge so that as the cutting edge is worn away by sharpening and wear, proper relation between it and the foot may be maintained.

Vi ith these and other objects in view, embodiments of our invention are shown in the accompanying drawings, and these embodiments will be hereinafter more fully described with reference thereto, and the invention will be finally pointed out in the claims. I

In the accompanying drawings,

Figure 1 is a front elevation of a cloth cutter according to one embodiment of our invention Fig. 2 is a horizontal sectional view along the line 2-2 of Fig. 1;

Fig. 3 is a horizontal sectional view along the line 3-3 of Fig. 1;

Fig. 4; is a side elevation partly in section and with parts broken away;

Fig. 5 is a transverse vertical sectional View through the line 55 of Fig. 1;

Fig. 6 is a transverse vertical sectional view through the base, with parts broken away and taken along the line 66 of Fig. 1;

Fig. 7 is a view similar to Fig. 3 and with parts broken away, of a modified form of construction;

Fig. 8 is a front elevation of a further modified form of construction, with parts broken away;

Fig. 8 is a detail view partly in section of certain portions of the form shown in Fig. 8; and b Fig. 9 shows a modified form of foot and ase.

Similar reference characters indicate corresponding parts throughout the several figures of the drawings.

Referring to the drawings, the base 10 is provided withan upright support 11 having rotatably mounted thereon at 12, the circular cutting blade 13 adapted to rotate in a vertical plane, the cutting edge of the blade extending at its lower portion into a slot 14 in the base, the upright support 11 being provided with a circumferential flange 15 extending over the edge of the blade at one side, while at its other side it is spaced from the edge as at 1.6. A beveled gear 17 is pro vided at the rear side of the cutting blade and is engaged by a pinion 18 provided on the endof a vertical shaft 19 journaled in an enlargement 20 of the support, the shaft being connected to and rotated by the armature 21 of a motor 22 mounted upon a circular flat portion 23 at the upper end of the enlarged portion 20 of the support 11. A horizontally disposed handle 24 is connected to the support to guide the movement of the cutter.

The base is hollow at its under side and is beveled at its side and ends so as to guide it'readily beneath the cloth.

At the under side of the portion 23, there are provided a pair of spaced lugs and 26 upon which is hingedly supported a plate 27, a shaft 28 extending through upstanding ears 29 and 30 on the plate and through the lugs 25 and 26, a coil spring 28" being disposed on the shaft and normally holding the plate in its lowered position. An arcuate guard member 31 having a deflector end 32 and a flange 83 extending over the upper part of the forward portion of the cutting edge is secured to the plate 27 by means of a bolt and nut Psi, and circuniferentiall y ad justable through a slot 35.

A pair of rotary beveled grinders 36 and 37 are mounted upon a bracket 38 pivotally supported on a lug 39 of the support 11 and provided with a downwardly extending crank arm l-O pivotally connected at one end of a link e1, said link being pivotally connected at its other end to a swivel pin 42 provided in the angle of an elbow lever 43 pivotally mounted upon a post lat depending from the portion 23 so that by swinging the lever inwardly, the grinders will be lowered into engagement with the cutting blade. A spring 43 extending between the lever 43, and a pin d3 o'n the support 20, normally holds the grinders in raised position.

Upon the plate 2'? below the shaft 28 and extending rearwardly, there is provided an arm 45 provided at its end with a pin 46 slidably'engaging the slot 4;? of a link {l8 pivotally connected at one end to a svivel pin 49 provided in the lever 43 and adapted as the lever is swung inwardly, to simultaneously lift the plate 27 and the guard so that the cutting edge of the blade will be free to be engaged by the grinders.

A foot member 51 has its butt portion 52 disposed in a cut-out 53 of the base and engaged by a transverse pin 54, to form a hinge about which the foot may be swung; upwardly. The foot is beveled at its ends as at and 56, the beveled portion. being of rounded contour and extending to the surface of the base. the hinge portion in front of the portion 55 being flush with the base. so that the cloth will ride freely from the base along the foot nieniber. The foot member may be longer so that it will not rise at as acute an angle as illustrated. The foot is provided with. a slot 5? cmbracing the cuttingblade. In the lowered position of the foot, the slot extends for some distance in front of the ci'itting edge intothe space there extends a filler piece 58 extending upwardly from the under side of the base through aslot 59, the base 60 of the filler piece being; disposed in a groove 61 and s'i'ipp'ort'ed at its under side by a plate 62 secured to the base 10 by means of crews 62. The portion of the filler piece eftending above the 'base plate 1.0 is provided with a flanged portion 58 extending beyond the slot at one side and engag" 1;: the up ier surface of the base. At the side of the plate the filler piece will be moved toward or away from the edge of the cutting blade so as to regulate the distance between the said piece and the euttinpfedge. the tiller piece constituting in the lowered position of the foot plate, a base for the slot 5?.

At the under side of the base, there is slidablymounted in guides and '71, a rod '72, and connected at one end by a link T3 to the under side of the foot plate, the link being disposed in a, slot 'T l of the base plate. At its other end, the rod 72 is connected by av knuckle joint 75 with a laterally swinging arm. 76 provided at the lower end of a ver tit-ally disposed shaft 77. the said shaft being journaled in a passage 75% provided therefor in the siu'n'iort l1, and bent outwardly at its upper end as at 79 and rearwardly into a handle portion 80. By swinging the handle, the rod 72 will be shifted forwardly through the turning movement of the arm 76 thereby lifting the foot plate as shown in dotted lines in Fig. l. A spring 76 extending between the arm 76, and a pin Y6" at "the under side of the base plate 10 normally retains the foot plate in lowered position. The slot 57 of the foot plate extend ing' considerably in front of the cutting edge of the blade, it will not interfere with the said. edoge during the raising: action,

while the filler piece provides a support for the cloth close to and in front of the cutting edge so that a clean cut will result.

In order to rise the guard at the same time that the foot plate is lifted. without lowering the grinder, a finger is provided on the shaft 7'? above the cutting blade, and en qaye the inner side of the plate 27 and which when the shaft 77 is rotated, will force said plate and the guard carried thereby upwardly so that the end of the guard will. not interfere with the cloth as it is raised by the foot plate.

The slotted connection of the link 48 of the lever 4:8 with the plate 27, permits of independent raising movement of the said plate by operation of. either the grinders or the foot plate.

In Fig. 7. we have illustrated a. modified formof construction in which the handle 80 for operating the foot plate is connected to the end of the lever engaging the pin. 8'

being bent as at 85 so as to press inwardly upon the handle 43. The movement of the handle 80 is such that it will not operate the handle 43 sufliciently to engage the grinders with the cutting blade, but will raise the guard out of the way of the cloth as it is raised by the foot plate. The handle 43 may be operated without operatmg the handle 80.

In Fig. 8, we have shown a modified form of mechanism for raising the foot plate, the rod 72 being connected at its end to a crank lever 86 pivotally mounted on the support 11 at87 and connected at its short arm to one end of a vertically movable rod 88 connected at its other end to the end of a handle lever 89 pivotally mounted at 90 on the handle 24 to swing in a vertical plane. By pressing the handle lever 89, the rod 72 will be moved inwardly and the foot plate raised. A spring 91 extending between the crank lever 86 and the pin 92 on the base plate, normally holds the foot plate in lowered position. The rod 88 is connected to the guard plate 27 bymeans of a link 93 so that as the rod 88 is raised, the guard plate will also be raised.

In Fig. 9 we have illustrated a modified form of foot plate 94 provided at its under side with a lug 95 movable in a slot 96 of the base plate 1.0 and engaged by an elongated screw 97 mounted in bearing lugs 98 and 99, being provided at its outer end with a grooved head 100 disposed in a cut-out 101 in the base 10, and adapted to be engaged by a screw driver, and fixed against longitudinal movement by means of a collar 102. By turning the screw, the slot 103 of the base plate may be adjusted as desired toward or away from the cutting edge.

With our improvements, a cloth cutter is provided in which the end of the out in the cloth may be made of equal extent throughout its depth and in which the support of the cloth close to the blade may be accurately regulated so as to always cause the blade to make a clean cut. The device is of simple construction and may be operated with facility.

lVe have illustrated and described preferred and satisfactory embodiments of our invention, but it is obvious that changes may be made therein within the spirit and scope thereof, as defined in the appended claims.

We claim: 1. In a cloth cutter, a rotary cutting blade adapted to rotate in a vertical plane, a guard extending over the edge of said blade, a longitudinal hinge for said guard, said guard adapted to be raised and lowered, a horizontally disposed foot plate provided with a slot embracing said blade at its lower portion and over which the material to be cut is adapted to be moved, the end of said guard being disposed in spaced relation to said foot plate, means adapted to swing said foot upwardly into an inclined position, and means cooperatively connecting said last named means with said guard and adapted to raise said guard simultaneously with the raising of said foot plate to maintain a substantially constant spaced relation between said foot plate and said guard to permit the free passing of the material therebetween.

2. In a cloth cutter, a rotary cutting blade adapted to rotate in a vertical plane, a guard extending over the edge of said blade and adapted to be raised and lowered, grinder means adapted to be moved \into and out of engagement with said blade to sharpen it, means for moving said grinder means, means coiiperatively connecting said last named means and said guard and adapted to lift said guard simultaneously with the movement into blade engaging position of said grinder means, a horizontally disposed foot plate provided with a slot embracing said blade at its lower portion and over which the material to be cut is adapted to be moved, means adapted to swing said foot member upwardly into an inclined position, and means cooperatively associating said last named means with said guard and adapted to raise said guard simultaneously with the raising of said foot plate.

3. In a cloth cutter, a rotary cutting blade adapted to rotate in a vertical plane, a guard extending over the edge of said blade and adapted to be raised and lowered, grinder means adapted to be moved into and out of engagement with said blade to sharpen it, means for moving said grinder means, means cooperatively connecting said last named means and said guard and adapted to lift said guard simultaneously with the movement into blade engaging position of said grinder means, a horizontally disposed foot plate provided with a slot embracing said blade at its lower portion and over which the material to be cut is adapted to be moved, means adapted to swing said foot member upwardly into an inclined posi tion, and means cooperatively associating said last named means with said guard and adapted to raise said guard simultaneously with the raising of said foot plate, said guard adapted to be raised by said means for operating said grinder means independently of the operation of said means for operating said foot plate.

4. In a cloth cutter, a base plate, a rotary cutting blade supported above said base plate and adapted to rotate in a vertical plane, a horizontally disposed foot plate base of said foot plate, a horizontally slidable rod connected to said link member, and means connected to said rod adapted to be actuated by the operator to cause sliding movement of said and thereby raise and lower said foot plate, said link member adapted to support said foot plate in raised position.

5. In a cloth cutter, a base plate, a rotary cutting blade adapted to rotate in a vertical plane. a horizontally disposed foot plate provided with a slot embracing said blade at its lower portion and over which the material to be cut is adapted to be moved, a rotatable shaft ournaled upon said base plate fixed against longitudinal movement and having a screw threaded portion, means associated with said base plate provided with a threaded passage engaged by said threaded portion of said shaft, said means adapted to be moved by the turning of said screw and adapted to regulate the distance between the base of the slot and the cutting edge of said blade.

(5. In a cloth cutter, a rotary circular cutting blade adapted to rotate in a vertical plane, a horizontally disposed foot plate provided with a slot embracing said blade at its lower portion and over which the material to be cut is adapted to be moved, said slot extending substantially in front of the cutting edge of said blade, a filler member disposed in the opening of said slot in front of said cutting blade, said filler member forming a base for said slot relatively close to said cutting blade, and means adapted to adjust said filler member toward or away from the cutting edge of said blade.

7. In a cloth cutter, a base plate, a cutting blade adapted to rotate in a vertical plane, a horizontally disposed foot plate pivotally mounted on said base plate and provided with a slot embracing said blade at its lower portion and over which the material to be cut is adapted to be moved, said slot extending substantially in front of the cutting edge of said blade, a filler member mounted on said base plate and disposed in the open ing of said slot in front of said cutting blade, means adapted to adjust said filler member toward and away from the cutting edge of said blade, said filler member forming a base for said slot, relatively close to said cutting blade, and means adapted to swing said foot plate upwardly into inclined position away from said filler member, said slot being free from contact with said cutting blade in said raised position.

8. In a cloth cutter, a base plate, a cir oular cutting blade adapted to rotate in a vertical plane, a horizontally disposed foot slate pivotally mounted on said base plate and provided with a slot embracing said blade at its lower portion and over which the material to be cut is adapted to be moved, said slot extending substantially in front of the cutting edge of said blade, a filler member mounted on said base plate and disposed in the opening of said slot in front of said cutting blade, said filler member forming a base for said slot relatively close to said cutting blade, and means adapted to swing said foot plate upwardly into inclined position away from said. filler member, said slot being free from contact with said cutting blade in said raised position.

9. In a cloth cutter, a circular cutting blade adapted to rotate in a vertical plane, a horizontally disposed foot plate having a fixed pivot on said base plate and provided with a slot embracing said blade at its lower portion and over which the material to be out is adapted to be moved, said slot extending substantially in front of the cutting edge of said blade, in the lowered position of said foot plate, and means adapted to swing said foot plate upwardly into inclined position, said slot being relatively close to said cutting edge, and free from contact therewith in the raised position of said foot.

In testimony that we claim the foregoing as our invention, we have signed our names hereunder.

NATHAN J. GOLDFARB. BERNARD SACKS.

Images