USRE3281E - Improvement in sewing-machines - Google Patents

Description

W. S, GUINNESS, Sewing Machine.

Reissued Feb. 2,' 1869.

No. 3,281.. I

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' roeate once for every revolution of the In using ordinary hand-needle 1'v secure them in the clamp, with their eyesdowu aid, and perfi'n ate the cloth with their bluntends, which, f'orsoft fabrics, answers a very good purpose.

g The clamp is also designed to receive two or more needles. arranged side by side in the line ofthe stitch For fin work. hen more than one needle is used,

- the second m edle, or that fari- -st from the end of the shuttle, should be set about one thirty secrmd" part of an inch below the other, but oothneedles enter and leave the cloth together. e

The presser-thnt G has a smooth-under surfa e, and

moves vertically ndwise, in guides, lathe overhanging arm B. It slides on its red g, andis adjusted by means of a set-screw, g, to acconnnodate different thick nesses of material. r

The presscrdbot is elevated, and retained in its elevated position, by means of a cam-p ane, g lived, on the arm 13', and corresponding cam g, fixed and turnlog on the rod 9.

The presser-ioot is depressed by a spiral spring-y, the tension of which may be varied by means of a set-- screw, f'", passing through a slot in the overhanging arm, and acting on the nut g on the rod gh.

The shuttle H reciproeates liorizontallyand transi versely to the 1 1eedle-arm, but parallel to the line of ain, with its straight side in contact with the race-' way 14, and is driven by a sliuttle-diiver, h, by preference, made of wood, as being less noisy, than metal.

The shuttle-driver is secured in a shuttle-holder,

made of wood, which consists of a frame, I, sliding on a rod, 1, tmnsverse to the frame, and having slots 0',

1, in it, transverse to its line oi'inotioin I Thesluittlc-di'iver is provided with slotst', parallel to its line of motion, and the shuttle-holder and driver are connected by. set-screws i fig. 3,. passing through these slots. Lain thus enabled to adjust the shuttle,- li'older relatively to the race.

The shuttle, it will be observed, does not run in a owe-way in the usual manner, but is held by the holder, its face only coming in contact with the race-way.

The shuttle is driven by a crank, J,'.on the drivingshaft 0, ci'mnected by a pit1nan,j, with an arm, j, depending from the shuttle-holding frame I, as shown in fig. 3. The shuttle, by this means, is caused to recipdriving-'sl'iaft C, each reei 'lrocation consisting of a quick ibrward movement, a slight pause as the crank j passes its dead-centre, arapid ietnrn, and another slight pause before beginning its next tbrward movement, while the Y velop itself.

crank passes the centre on that side.

- All the mechanism, it will be observed, is driven by means of cranksand coiuieeting-rods, directly from th drivi ng-shaft,

The shuttle, as shown in. figs.3 and 7-, is made with a sharp end, or snout, h, but enlarges rapidly. I prefer to make this snout above the centre. linc'of the shuttle.

By this mode of construction, I am enalflcd to use comparatively short needles, and to work with a short stroke of the needle, as it is only necessary for the needle to descend low enough for the snout of the" shuttle. to enter the loop,'whieh is then expanded by'the action of the shuttle itself, which, in passing through the loop, draws down thread enough to en- As, in my machine, the shuttle passes through the loop oi the needle-thread while the needle is rising,

the loop is, to some extent, carried in the direction in whiehthe shuttle is moving. Now, in order to prevent the thread being robbed between the face of the l I l l the shuttle and race. 4

An intermittent progressive motion is imparted to the cloth by means of a feed-bar, K, pivoted, at its lower end, eccentrically on the driving-shait, andvibrating on a fulcrum, l.

The fulcrum-pin l is mounted on a bracket, L, moving vertically on a-g iide, I, in a ledge, L, projecting from the frame A, and held, at any desired height, by meansofascrewed spindle, I", and jam-nuts, I. r

' The fulcrum-pin l enters a longitudinal slot, 70 fig. '3, in the feed-bar, and as itis raised or lowered therein, of course varies the length of the lateral vibration of the feed-bar, the vertical movement of which is received from the crank, as hereinbefore explained. I thus secure any desired adjustment of the feed-motion.

By the devices above described, the feed-bar is caused, at proper intervals, to rise against the cloth, which is held down by the presscr-foot G, and feed the cloth. lbrward, and then todescend, out of contact with the cloth, to its central or lowest point, and again to rise and move ibrward asbefore. j

As n iy feed has no points or teeth to. catch the cloth, the finest and most delicate fabrics can be fed with it. This feed also possesses the advantage-0f, working either way with equal facility.

A stitching-plate or throat-plate, M, is secured upon the fran'ie, just below the needle-arm, and perforated with a proper hole for the passage of the needle or needles/ The needle-thread is supplied from spools, shown in red in Ii 'l, turning on pivots on the overhanging arm BE.

The threads pass from the spools through eyes or slots in sere wed spindles, 0, provided with sp1ingclamps, 0, to regulate the tension. 7

- From these clamps the threads pass through eyes, on an arm or threadq'cgulator, P, vibrating on a fulcrum, r, fig. 1.' v

This arm is vibrated by means of a boss, r, on the needle-bar, which strikes a projection, r', on the fuldrum, as the needlebar rises, and thus takes upthe slack thread. (See fig. 2.)

The arm P may be vibrated the other way by a wei, it, or by a spring, q, bearing on the under side. of the arm P, as shown in fig. 2, in order to take up the slack of the thread above the cloth.

From the eyes 1), the thread passes forward toholes s,in' the overhanging frame, and thence to the needles.

The crank-pind, which drives the needle bar, and the crank h, which actuate's the feed-bar, are both arthe same radial lia'ie.

angles to the other cranks; consequently the machine may be run equally well either way, as, when the cranks (17. are in their lowest positions, they will act is turned, and the crank J, being at right anglcs'to them, and having to give motion to the shuttle, which worksat right angles to the needle, will also act on the shuttle in the same manner, whichever way-the is turned.

fl.hc 0peration is as follows:

The machine having been properly threaded and adjustcd,-the fabric is secured upon the stitchingsplate by the prcsser-fiaot, and the drivingsshait is rotated in either direction. In figs. 1 and 2, the needle-bar is shown as just commencing its. descent. The needle loop bypreventiug the thread from catching between ranged on the same side-of the driving-shaft, and in The crank J, which actuatcs the shuttle, is at right in the sameinauner, whichever way the driving-shaft penetrates the fabric until its eye is slightly below the the slot or recess h".

" snoutof the shuttle. As the needle'risesthe'snout.

h entersthe loop of theneedIe-threaihand envelops the shuttle with it, by expanding the loop as it passes I .through. As it does this, that part of the loop which ordinarily would rub between the shuttle-face I'll (1 the race-way, slides along the recessed edge h, and enters As soon as the shuttle has passed through the loop, (carrying its thread with it,) the latter is tightened by the continued ascent of the needle, andthe action of the boss 'r on the tensionlever P. The cloth is then fed along a, distance sufficient for the next stitch, and the operation, above de--' and driving-sheik, as and for the purposes specifiecl, 2. The combination, sulmtnntially as set forth, of the longitudinally-slotted fee\"-,ber, the fulcrum-pin l, and its support L, with the lei'lge L, guide 1, and adjusting-sereiiv I, whereby the feed can be varied at pleasure. v I

3. The thread-regulator or, take-up, I, constructed, errmiged, and opemting as set forth.

4. The combination, with the shuttle, of the adjust able holdernnd reciprocating carrier, as set-forth.

The combination of a. needle-end it shuttle, operating substantially as described, with a needle-way out tie, for the purposes. specified.

the reciprocating slide 1, or" the adjustable holder h, whereby shuttles of'v n-ious sizes may be employed.

7. The combination, substantially as set forth, of the oscillating slotted trczidle .X, the adjustable arms in, the bttll-lbllLl-St'mlicli joint, the pitman, and the bail zinee-Wheel, for the purposes specified.

Witnesses: 'W'. S. GUINNESS.

S. J. Gonnox, Josnrn .MURRAY. I

away atone side, to or below the bottom of the shut- (3. Thecoinbinzttion, substantially as set forth, with-

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