US311734A - Fourths to henry brooks - Google Patents

Description

2 Sheets-Sheet 1.

(No Model.)

H. H. FEPEL.

SEWING MACHINE TRIMMER.

Patented Feb. 3, 1885..

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(No Model.) 2 SheetsSheet 2. H. H. PEPEL.

SEWING MACHINE TRIMMER. No. 311,734. Patented Peb.3,1885.

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HENRY H. FEFEL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF THREE. FOURTHS TO HENRY BROOKS, OF SAME PLACE.

SEWING-MACHINE TRIMMER.

SPECIFICATION forming part of Letters Patent No. 311,734, dated February 3, 1885.

(No model.)

To all whom, it may concern:

Be it known that I, HENRY H. FEFEL, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Sewing-Machine Trimmers; and I do hereby declare the following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawings, which form part of this specification, in which Figure 1 is a longitudinal vertical section, and Fig. 2 a transverse vertical section, of my invention. Fig. 3 is a detail view of the nippingedges. Fig. 4 isavertical section showin g a modification of the nipper-actuatingdevice.

My invention has relation to that class of devices or attachments known as sewing-machine trimmers, and my improvements have for their object to provide new means for separating or dividing fabric as a substitute for the cutting, shearing, and abrading mechanisms heretofore employed for that purpose.

My invention consists in the special con struction and combinations of parts hereinafter specifically claimed, and constituting a trimmer, and in the combination of such trimmer with the feeding and stitch-forming mechanism 0 of a'sewing-machine, the essential features of said trimmer, which distinguish it from all devices heretofore employed for such purpose and used in combination with a sewing-machine, being two cuttingjaws, each of which 55 has a sharp edge, both of said edges being directly opposed one to the other and lying in a plane parallel with the feed of the machine, the arrangement of parts being such that in operation both edges out toward each other- 40 one downwardly and the other upwardlywithout passing each other, substantially as hereinafter set forth.

Referring to the accompanying drawings,

jaw is attached to the bed-piece B by screws" (1, and the nipping edge or bit 01 projects up wardly through a slot, 0, in the cloth-plate A, inside of the feed-slot.

Eis another jaw, fulcrumed atein a'bracket, F, secured on the cloth-plate A by screws f f, which pass through slots f in said bracket and enter threaded openings in said cloth-plate. By these means said bracket and its jaw can be adjusted toward and from the presser-foot 6 of the machine. The outer extremity of the jaw E has a nipping-edge aligned with the edge of the stationary jaw, both edges being parallel with the long side of the pressenfoot and in the plane of movement of the feed. 6 Said edges flare at the end where the fabric is fed between them, so as to facilitate the entrance of such fabric to their bite. Motion should be communicated to the movablejaw, so that it and the fixed jaw shall come into biting contact, their edges just touching each other while the stitch is being formed on the machine, and shall be separated or apart while the feeding of the fabric is being effected. This may be accomplished in many ways, one 7 of which is illustrated in the drawings.

H is a lever, fulcrumed at h in the bracket F, and having its short arm projected beneath the rear end of the long arm of the jaw E. There is also provided a spring, I, having its s ends secured, respectively, to the head K of the machine and to the rear end of jaw E, so as to keep said end in constant contact with the end oflevcr H, and to lift or open the biting end of the jaw when the short end of the le 8 ver descends. The rear end of lever H is se cured by a ball-and-socket joint or universal coupling, L, to a connectingrod, M, springing from or attached to an eccentric-strap, N, which encircles an eccentric on the main shaft 0 O of the machine. The parts are so adjusted that while the needle-bar is descending the jaw E is approaching, and its nipping-edge comesinto contact with the edge of the jaw D, and while the needle is out of the fabric and 5 the feed of the latter is proceeding the edges of the jaws are apart.

The operation of the nippers does not require extended description, as it need only be pointed out that fabric coming between the sharp edges, each of which operates so that the wear is evenly distributed between both; hence each edge will last at least twice as long as if the work were done by a single edge.

- Again. as the edges do not pass one another,

as in shear trimmers, they do not wear one another, as such shear trimmers do, and hence dullness is occasioned solely by the resistance of the fabric trimmed, and not by wear of one jaw or edge upon another. The cut of the edges is direct and made throughout wholly at one time-that is, the edges do not gradually approach, one part of the edges first and the other parts afterward. as shears do; but

all parts of the opposing cuttingedges are constantlyequidistant-that is, each point of one edgeis always at the same distance from the opposite point 'of the other edge that every other point of said first-named edge is to the opposed point of its antagonistic edge.

I am aware that'shears, chisels or choppers, andabrading-jaws have heretofore been used as trimming attachments for sewing-machines, and that nippers have been employed for cutting wire, &c.; hence I- do not lay claim to such, but limit my claims specifically to the construction and combinations hereinafter specified. I

As a modification of my invention, both the jaws may be made movable and the rear ends of their actuatinglevers be connected by a toggle-joint, as shown in Fig. 4 of thedra-wings.

What I claim as my invention is as follows: 1. The combination, with thefeeding and stitch-forming mechanism of a sewing-machine, of a trimming device comprising two jaws having sharp opposing parallel edges in a plane parallel with the line of feed of the machine, said jaws being constructed and relatively arranged as described, so that both their edges act simultaneously throughout their length, both edges cutting at the same time, with mechanism, substantially as described, for imparting motion to one or to both jaws from the working parts of the sewing-machine, substantially as shown and described.

2. The combination, with the feeding and stitch-forming mechanism of a sewing-ma chine, of a trimming attachment comprising two jaws having sharp edges directly opposed to and parallel with one another and in a plane parallel with the line of feed, said edges being equidistant at all of their cutting-points and flaring apart at their feeding end, and mechanism for imparting motion to one or to both of said jaws from the working parts of the machine, substantially as shown and de scribed.

3. The combination, with the feeding and stitch-forming mechanism of a sewing-machine, of a trimming attachment comprising two cutting-jaws with sharp opposing edges in a plane parallel with the line of the feed and parallel with each other the cutting parts of said edges being equidistant for their entire extent, one of said jaws being located mainly below the cloth-plate of the machine, but having its edge projectingupwardly through a slot in the latter, the other jaw being fulcrumed in a bracket mounted on the said plate, and having connecting mechanism for the working parts of the machine, whereby one jaw is caused to approach the other with a movement of uniform length for all points of 7 its edge, substantially as shown and described.

4. The combination, with asewing-machine, of a fixed lower jaw, D, secured to the bedpiece B, and having its edge projected through a slot in the cloth-plate, a movable jaw, E, fulcru med in an adjustable bracket, F,mounted on said cloth-plate, a lever, H, also fulerumed insaid bracket, and connected, by a rod, M, and strap N, with an eccentric on the main shaft of the machine, and a spring, I, for hold ing the adjacent ends of said movable jaw and lever in contact, said parts being constructed and arranged for operation substantially as shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this 21th dayof May, 1884.

HENRY H. FE FEL.

\Vitnesscs:

ANDREW ZANE, J r., M. D. CoNNoLLY.

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