US1195569A - Cloth-cutting machine - Google Patents

Description

H. FABIAN.

CLOTH CUTTING MACHINE. APPLlcATloN FILED ocT.1,4. 1913. RENEWED MAB. 14. |916.

, by contact with the cutter through accident or carelessness.

N r raison.

HARRY FABIAN, OF PHILAI)ELPHIA, PENNSYLVANIA, ASSIGNOR TO PEERLESS BELT LACING MACHINE COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION or NEWy JERSEY.

Specification of Letters Patent.

Patented Aug. 22, 1916.

lApplication led October 24, 1913, Serial No. 796,989. Renewed March 14, 1916. Serial No. 84,243.

To all 'whom t may concern .Be it known that I, HARRY FABIAN, a citizen ofthe United States, residing at Philadelphia, in the Vcounty of Philadelphia and State of Pennsylvania, have invented inclosed motor, and gearing for transmitting motion therefrom to the cutter, which latter may be of various types.

A second object is to provide a guard to prevent injury to the hand of the operator A further object is to provide improved means for sharpening the cutter while in operation during the cutting of a pile of cloth.

With these and other objects in view, reference will be had to the accompanying drawing forming a part of this specification and wherein like numerals of reference designate corresponding parts throughout the several views, in which: Y

Figure 1 is a side elevation of the complete invention, Fig. 2 is a vertical sectional view through the sharpening means and guard means detached. and enlarged, Fig. 3, is a transverse sectional view through Fig. 2 on the line 3-3, and enlarged, Fig. 4, is a front elevation of Fig.w2Fig. 5, is a` perspective view of the throat plate, and Figs. '6 and 7 are elevations of other styles of cutters. v

In the drawing, reference numeral 1 indicates an electric or other motor, incased against the entry of dirt or water and to preventV the'flying of .sparks from the brushes, and similarundesirable and dangerous features. Extending horizontally in advance of the motor is an` arm 2, provided with an electric light lamp 8, and extending horizontally fromthe opposite'or rear side of the motor is a handle 4, and by means of this handle, the operator guides the cutter in its proper path of movement through afpile of cloth to be cut. The lower end of 5 the vertical shaft of the motor, seen in dotted .lines in Fig. 1, is equippedl with a worm gear 5, lmeshing with a worm gear 6, which in turn meshes with a gear 7 These two gears 6 and are much in the nature of what is known in the trade as silent spur gears, i. e. spur gears with pitched teeth. Hence, in addltion to the silent action between the gears 6 and 7, the pitch of the teeth of the gear 6 accommodates said gear 6 for proper cooperatlon with the worm gear 5. rlhis gearing, however, 1s not an essential of the 1nvent1on and is subject to modification. Upon the shaft 8, of the gear 7 is arranged a cutter or rotary knife 9, said shaft 8 being mounted in the opening 8 of the motor supporting standard 10, as seen in Fig. 5.

The standard 10, is a part of the throat` plate 11,.though, obviously, it may be part of or attached to the base plate 12. This throat plate 11, is removably secured to the base plate, andl is provided with a sharpened shear lip 14 which coperates withthe cutter 9 to cut the cloth. In Fig. 1, it will be noted that the cutter is substantially propeller shaped and that the notches therein aiford walls 9 which co-act with the shear lip 14 of the throat plate; while in Figs. 6 and 7, other forms of knives or cutters are shown. The Fig. 6 form is quite similar to that of Fig. l, except that the cutting action of the blades or teeth 9, being greater in number, is more rapid. These two cutters ofFigs. 1 and 6 are sharpened only on one side, Ywhile the disk cutter of Fig. 7, is sharpened on both sides as at 9, (see Fig. 3.)

Secured rigidly to the motor casing 1, by screws 15 is a, bracket 16, having a top plate .17 and bottom plate or collar 18, and'eXtending through the'top plateand said collar are two parallel tubes 20 and 21.- Within the tube 21, is slidably arranged a rod or stem,22 provided on its lower end with a guard or presser foot 24, the inner or rear end of which is preferably bifurcated as seen in Fig. 8, and indicated by numeral 24. The

and in this position, the hand of the operator is prevented from coming into contact with the knife.

The tube 20 is provided with a vertical slot 26, extending from the upper end of the tube to a point below its middle portion, where j the rod 22 and each of which legs is equippedA with a 'grinding wheel, indicated by numerals 31 and 32.

In operation, the base plate 12 is inserted beneath the pile of cloth, or other material to be cut, and the operator, grasping the handle 4 moves the machine into the pile of cloth, the rotating knife 9 meanwhile cutting the cloth as desired. Before the cutting operation, however, the guard or presser foot 24 is lowered to engage the upper layer of the pile of cloth, by loosening the set screw 25, pulling down the rod 22 from the tube 21 and then tightening the set screw. The toe 24 in advance of the cutter pushes the hand of the operator away from the cutter and the furcations of the bifurcated rear or inner end of the foot surround and prevent contact of the hand with the cutter. This guard or presser foot may be adjusted to suit the thickness of the pile of cloth, its relation to the cutter edge being substantially the same in all of its adjusted positions. After constant use, the cutting edges of the knife or cutter become dull'and it becomes necessary to resharpen the same. 'Instead of removing the cutter entirely from the machine,

the incorporated grinding means is put into operation and acts upon the cutter during the 'cutting operation thereof, as follows: The handle 29 is depressed against the action of the spring 29, thereby lowering the'grinding wheels to the dotted line position of Fig. 1. When the handle 29.engages the bottom of the slot 26, itis turned into one or the other of the transverse notches, thereby locking the handle and the grinding wheels in their lowered position. As to which of the notches 27 the handle is forced into, is determined by which side of the cutter is to be ground. If the cutter has two sides to be ground, the handle is moved first into one and then into the other of said notches 27, and if only one side of the cutter is to be ground, the handle is moved into only one ofI said notches 27 and there locked until the completion of .the grinding operation. When the grinding operation is completed, the handle 1s merely turned into the main slot 26, and the coil spring then returns it and the grinding wheels to their normal or Fig. 1 position. Obviously, the grinding wheels may be of any desired shape to suit the contour of the cutters to be sharpened.

When one cutter Ais to be substituted for another, the set screw 25 is loosened and the guard foot 24 turned, the short furcation of the bifurcated end clearing the cutting edge of the cutter.

It will be noted that the guard foot 24 prevents contact of the operators hands with the cutter and in addition thereto performs the function of preventing contact of the grinding wheels with the cloth, in holdin the cloth away therefrom.

aving fully described the invention, what is claimed as new is:

1. In a cloth cutter, a rotating cutter, operating means therefor, a guide member mounted adjacent the cutter, a rod, grinding means carried thereby and engageable with opposite sides of said cutter, said rod being slidable in said guide to bring the grinding means into grinding relation to said cutter, said rod being rotatable within said guide to bring the grinding means into grinding Contact with the cutter, and means for locking the rod against sliding movement when rotated in said guide.

2. In a cloth cutter, a rotating cutter, operating means therefor, a tube mounted adjacent said cutter and having a'longitudinal slot having a transverse extension, a ,rod slidably and rotatably arranged in said'f'tuibe', an operating member extending from said rod and movable in said slot and its extension, and grinding means carried by said rod and movable into grinding relation and grinding contact with lsaid cutter by the said sliding and rotating movements of said rod.

. 3. In a cloth cutter, a rotating cutter, operating means therefor, a tube mounted adjacent said cutter andhaving a longitudinal slot having a transverse extension, a rod slidably and rotatably arranged in said tube,

an operating member extending from said rod and movable in said slot and its 'extension, and grinding means carried by said rod and movable into grinding relation and grinding contact with said cutter by the said 'sliding and rotating movements of said rod, and a second tube on the mounting of the first tube adjacent to the latter, a rod slidably and swingably arranged in said second tube and adapted to bear against the cloth to be cut to keep the same away from the grinding means when the latter is in grinding position.

4. In a cloth cutter, a rotating cutter, op-

erating means therefor, a tube mounted adslot having a transverse extension, a rod slidably and rotatably arranged in said tube, an operatmg member extending from said rod and movable in said slot and its eXtension, and grinding means carried by said rod and movable into grinding relation and grinding contact With said cutter by the said 1, sliding and rotating movements of said rod,

' adjustable to a position adjacent the cutter and between the grinding means and the cloth to be out.

5. In a cloth cutter, an incased motor, a cutter operated thereby, a pair of .parallel tubular guides adj aoent the cutter, rods slid- .able and rotatable in said guides, a yoke on one of said rods, a guard on the other of said rods, grinding means on the legs of said yoke and on opposite sides of the cutter, a longitudinal slot in one of said guides and having lateral extensions, a spring Within said slotted guide surrounding the rod therein; a handle on said last mentioned rod movable in said slot to move the grinding means into grinding relation With the cutter, and movable into said slot extensions to move the grinding means into grinding contact With the opposite sides ofthe cutter and to lock the rodl against sliding movement.

In testimony whereof I afx my signature in presence of two Witnesses.

HARRY FABIAN.

Witnesses:

GEORGE KOPPENHOEFER, J r., MARCUS ELEVY.

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