US81191A - Berlayne and e - Google Patents

Description

N. MEYERS. Sewing Machine.

No. 81,191. Patentd Aug. f18,.1368.

Awmmmxmm Y @uiten faire gnent ffirz.

A NICHOLAS MEYERS, OF BUFFALO, NEW YORK, ASSIGNOR TO F. L. CHAM- 1 BERLAYNE AND E. O. POMEROY, OF SAME PLACE.

Lem-rs Para: No. 81,191, dated August 1s, 1868.

IMPROVEMENT Ibi SEWING-MACHINE.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, NICHOLAS MYERS, of the city of Buffalo, in thc State of New York, have invented a new and useful Improvement in Sewing-Machines; and I do hereby declare that the following is a full, clear, and exact description ofthe same, reference being hadto the accompanying drawings and letters of reference marked thereon, making a part of this specification, in which Figure 1 is a side elevation, showing the parts above and below the plate C.

Figure 2 is a plan "iew of the under side of the plate C, with the shuttle-carrier and part of the feedingmechanism. Y r v -:Figure 4 is a transverse vertical section through the line c: .'r, iig. 2.

Figure 4 is a section showing the application of the curved needle to the machine instead of the shuttle. Figure 5 is a view in perspective of the shuttle; and

Figure 6 is a longitudinal `vertical sectionthrough the lines y y, iig. 5. v To enable those skilled in the art to make and use my invention, I new proceed to describe its construction and operation.

Similar letters in the drawings refer to like parts. This invention consists of a combination of devices for imparting motion to the feeding-plate; also of other matters, touching which a. `full description is hereinafter set ont. I l

A represents a. metallic shaft sustained in brackets a a, Aprojecting from an arm, B, of ordinary shape, rising from a plate, C, ofthe common construction. To the shaft A, motion is communicated in any convenient man t ner, as by a belt passing over Vthe pug-'lloy b. A fly-wheel, c, is placed upon one end of the' shaft A, and at different parts of the same shaft are located a cylinder-cam, d, which may be near the ily-wheel end, and a faceplate cam, @which is on the opposite end from the ily-wheel. The cylinder-cam is the source of the mot-ion of the shuttle and of the feedingldevices, and the face-plate cam is the source'of the motion of the needle-bargilxence it appears thatall the motions of the working parts of this machine are derived from one-shaft, the shaft A.' The arm B may be made tubular, and thc shaft A enclosed within it. I

As before remarked, the cylinder-cam d is the source of the motion of the shuttleand feeding devices. The means by which said motion is transmitted are as follows: In` the groove d plays a pin, d, with a frictionroller attached. The pin d projects into the groove from near the upper end of au arm, c, pivoted tothe main arm B at a point beneath the cylinder-cam d, and bent-outward from the pivoted point so as to partially embrace the said cam. The arm c passes downthrough a slot, c', of the plate C, and.` terminates at a suitable distancebclow said plate, where it is jointed to one extremity of a connecting-bar, e', thc'other extremity of which is jointed to a shuttle-carrier, lz, sliding horizontally in a slotted guide, h', projecting downwardl'frem the lower side ofthe plate C, and in a slot, c, in saidl plate, traverses a shuttle, hf. On the opposite side ofthe slotted guide L, and attached to the shuttle-earriert is a plate, i, from the lower edge of which projects horizontally a plate, k, having a wedge-shaped slot, lc', in it, by meansof which slot the plate It is divided, nearly into two parts, whereof the outer part, le, is wedge-shaped, and also inclineddownward for a suitable distance at its point, as shown in Figure 3. To.thc other part of the platelt, on thc opposite'sidc of the slot lc', is pivoted a piece, l, nearly ofthe shape of a right triangle, whereof the pivoted point is near the apex,and the hypothen'use side partially covers the slot k', and the baseis about at the onter'end of the plate It.l Two pins, Z l', projectlY downward from the under side ofthe plate l, between which passes an elastic arm, Z, rigidly attached at one end to the plate lc, which arm, whenever the piece Z isA forced inward, tends to press it outward again. The function of the triangular-shaped piece l is topress, during the forward throw of the shuttle-carrier, to which, as has been shown, it is indirectly attached, upon the pin m' of th'e plate m, which pressure forces the plate m.

susi 2 outward between` the guides n n', which form a way between them for the plate m to slide in. The piece l being only pivoted to the plate 7c, and restrained from yielding to any horizontal force only by the elastic arm Z, when it strikes the pin m', gives way a. little at first, whereby a shock to theparts is avoided. The plate m is held between -thc guides n n', by means of pins projecting from one of the guides n', and entering slots m m, one near each end ofthe platc m, whereof the'islotm" has its upper side inclined, being of a triangular shape. From the inner end of the plate m projects upward the feed-plate o, playingV through a transverse slot in the plate C. l v

Let it now be supposed that the shuttle-carrier 71. is at the end of its throw, the shuttle having passed through the loop. When this-is the case', the triangular-shaped piece Z mustv also be at the end of its throw, and have forced plate m backward, by impinging againstuthe pin'm. To have reached this position, the plate m must have descended, owing to the inclined side of the slot m", which rests on the pin n. To admit of the l descent of the plate-'m is the purpose of the inclination of the part k of the plate c at its point, down which sloping part the plate m passes as the plate k slides under it. By the aforesaid descent of the plate m the feedplate o is withdrawn beneath the surface ofthe plate C, and by tho above-mentioned outward movement of the plate m, the feed-plate is drawn backward. v

Itis obvious that the parts are now in proper position for the backward throw of 'the shuttle. This is effected by the motion derived from the groove d', of the cylinder-cam d, immediately by the bentarm e, and remotely by the shuttle-carrier. During this movement the plate k, is borne backward with the shuttle-carrier, V and the inner inclined side of its wedge-shaped piece le", impinging against the pin m', throws the plate m inward toward the shuttle-carrier. At the moment ofthe beginning of the aforesaid forward movement of the plate m, it receives also an upward movement, by reason of being lifted 4up from the pin'n, which occupies a little recess at the upper corner of the slot m, by the inclined part 7c of the plate c, as it passes under said plate m. The aforesaid upward motion of the plate m lifts the feeding-plate o above the surface of the plate C, and causes lit to bite the cloth in theusual manner between itselfl and the presser-foot. The cloth is then fed Aforward by the continued forward motion of the plate m, produced as before described. The return-motion of the feeding-plate has been above set out.

From the foregoing it appears that the motion of the feeding-plate is tripartite, viz, an upward, a forward, and a combined downward and backward one. It also appears that the feeding-device is attached to the shuttlecarrier, whereby a separate mechanism for operating the former is dispensed with. l

-The face-plate cam r, as has been stated, is the source of the motion of the needle-bar s, which moves in suitable guideways in the end of the main arm B, and from which a pin, s, projects into the groove r of the face-plate cam, said pin being provided with a friction-roller. I

The groove d of the cylinder-cam cl is uniform on both sides of said cam. The pin d of the bent arm e will, therefore, if there is nothing in the working of the other parts to prevent, traverse the groove with equal facility, whether the cam revolves in one direction or the other. The shuttle-carrier and feeding-devices having a reciprocating motion derived from a vibrating-arm, will, it is obvious,.hegin to move, in whichever direction the arm begins to move.

The groove 1" ofthe face-plate earn r is also uniform on both sides of said cam; the pin s of `the' needlebar s will, therefore, as was said ofthe pin d of the bent arm c, traverse its groove with the same readiness in` whichever direction the cam r may revolve, provided its connection with other parts of the machine docs not prevent.

It appears, then, that each/of the parts of this machine operates independently of the direction of rotation l of the shaft A. There is, therefore, no wrong way of turning the shaft, one way operating as well as the other, and there is no'possibility ofthe happening of accidents frour reversing the motion.

I have now completed my description of the construction and operation of the machine itself, and proceed to'call attention to my shuttle, which is seen'jn figs. 5 and 6. I

The shuttle itself is of ordinary form. Upon its outer side, however, is au improved tension-device, irr the shape of an elastic steel strap, ,1 fastened to theshuttlc at one end by means of a screw, and free at the other, being pressed against the shuttle byits own elasticity.

In the out-er end of the strap is a small notch, t', terminating in'a little hole, t. The thread, as it comes from thcspool u, passes through a hole in the side of the shuttle, and is drawn into the hole t through ythc notch t'. '.lhestrap't operates as a tension-device,j\ vith greater or less force,jaccordin'g as it .is screwed more `or less tightly to the shuttle.

Within the shuttle is an improved spool-holding device'in the shape of a spring, v, at the forward end of the shuttle, in which spring one ofthejournals of the spool u is placed, and by which the spool i's pressed with more or lesvsforc'e against the opposite 'end of the shuttle. By means 'of this arrangement the spool may be easily inserted in or removed from the shuttle.

In the inner side of the shuttle there is a longitudinal slot, u, lengthwise of which is a wire, zu', rigidly secured ,to the shuttle at the vends of the slot. An eye, u, throughwlrieh passes the thread on its way tothe tensi'orstr'ap ts'lides on th'ewirew, as the thread travels in unwinding along the spool. rlhe function of. the Aeye is to linsurethe' free delivery at all times of thotliread fromthe spool.-

Itwillbeseen that the tension may bc changed simply by altering the screw whieh'holds the strap t, without remcvingthe shuttle from the carrier. Also, that the thread may be removed from .or placed under the strap, without change of tension. u i

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent,is-

1. The plate k, provided with the wedge-shaped and inclined part k, in combination with th-e pvoted triangular-shaped piece l, and the plate on, the latter being provided with tho triangular-shaped slot m'" and the feed-plate o, all operating together to produce the food-motion, substantially as described.

2. The shaft A, in combination with the vibrating-arm Z, the connecting-rod e', and the carrier h, bearing upon one side theshuttle, and upon the otbersdc the feeding-mechanism, substantially as described.

' NICHOLAS MEYERS.

Witnesses:

E. L. GHAMBERLAYNE, H. J. ZUDRICK.

Images