US105123A - pepper - Google Patents

Description

2 shets-I-sneet-L T. W. PEPPER. SEWING MACHINE.

No. 1053123. Patented Ju 1y 5. 1870.

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T. W. PEPPER. SEWING MACHINE.

No. 105,123. Patented July 5, 1870.

-TRUMAN W.1PEPPER,

''.lntent or N-EWNYORK, N. Y.'

Lemrs'pmnv 1v .-105,123, amd July' 5, 1870.

'IMPROVEMENT ne SEWING-MACHINE.

The Schedule referred- .to in these Let-ters Patent and making pm 'of the'same To all whom. it may concern Beit known that I, JJRUMAN W. PEPPER, of the ,cit-y, county, 'and State of New York, have invented anew and useful Improvement in Sewing-Machmes, of which the following is a full,"elear, and

exact description, reference being had tothe accompanying drawing forming part of this. specification, .and 1n which'- C f Figure l represents a longitudinal vertical section of a sewing-machine, with myimprovements applied thereto;

Figure 2, an inverted plan of the saine;

Figure 3, a transverse section, taken as indicatedby the line a: :c in fig. 1;

' Figure 4, a transverse section, taken as indicated li .the line y y; and A Figres 5, 6, 7, and 8, diagrams in illustration lof the four-motion feed employed by the machine.

)figured is a view of the wedge and rocking-block simply shaped .to give a reciprocating,movement to through which the feed-bar works.

Similar letters of reference indicate corresponding parts.'

This invention is designed as an improvement uponl vthe sewing-machinesecuredtonie,by Letters Patent,

No. 76,807, issued April 14th, 1868, and, like' it, is more particularly intended to be .used ou or with a narrow sewing-table, such as employed* in -the manu-- facture of boots and 'shoes'varions tnbnlar'and-'otherwork, but which invention, or portions ofit, is or are alsoapplicable to otherdescriptions'of sewing-ma-i chines.- It will suffice here, however, to describe the i invention as applied to a sewing-machine of the defscription shown in the patent herein-before referred to. Like such previous-machine, the one here repre? `sented' has a feed operating in fourdistinct directions,

atwill, as required; but the changes -in the feed are effected b'y different means, and irrespective ofany motion to the presser-foot, which may be stationary.l The changes in the direction of the feed are effected by a sliding and variously-formed cam made toope'rat e on a peculiarly-shapedA lever, fast to the `feed'-b`ar, and operatingin conjunction with springs, also lprovided with teats or studs, which, according as the cam -is raised or lowered, serve to give eithera forward, a backward, a right-hand, or a left-hand `cross-feeding stroke to the bar, which vcarries 't-lrefee'd'er, while a rocking bearing, in which said b ar works, andwhich is actuated by a sliding-wedge, o erating inzconj onction with a spring, secures to tlie eeder its necessaryup'- and-down motion,thus dispensingwitu all up-and-down. movement to the presser-foot.

In the accompanying drawing-1 A is the frame or box-portion of B, its goose-neck; and G, a narrow or ar1n-like sewing-tableA the machine 'D is the driving-shaft, which ismade `to revolve by any suitable means, and

El the needle-bar or holder, with needle attached,

"- actuated bya bell-.cranked arm` ofr lever, by a caniwheel, 14,on the driving-shaft I?.

Gis the holder ilithesiiool, from Athread is drawn, and

H is'the curvilinear-ly reciprocating shuttle fur tar ryiug the locking-'thread and passingit through' the -loop ofthe needle-thread.

I is the shuttle-driver, hung axis, a, and v Y l) c 'the pinions by whicivmo'tion is eomn'iunif catedto the s huttle through a rack, d, reciprocated ,by a groovedcam,"J, fast on' the driving-shaft D.' 'lhiscam is represented as operatingthe rack-bar byfa stud, c, on a'lever, f, 'coimecte'd tothe rack-bar .by-a link, g.

which the henn;

on a vertical shaft orv The cam-groove; ln'whioh the studfe work'sis not the rackd, butis-m'ad of concentricibrinf fora :por4

tion of its length, 'as from 7|. to 7;,fand 'said' grooved can] so set in relation with the needle that the shuttle, as operated by the mclcd, `remains'silntionaiyjatthe terminationofl its forward stroke, and itstlneadkept straight .or tight' until afterthepoin't of theneedle has passed below the shlittle-threadl whichpreveuts any; defecl'fin the stitch, by rendering itvinpossible for theneedle, in its'repeated descents,jto pass `on1 -dierent sides ot'- the shuttle-thread; "This 'pause is given to th' shuttle byA the-:concentric portion h h in the' gi. cred cam J f l The machine is provided with any suitable presserfoot, which, however, when work-is [being done, need) not have anyup-and-down movement to aid the feeder in its operation on` the material.- This is avoided by causing the bar K,which carries the feeder K', to rest at or near its forward end in a. bearingblock, L, hung to rock on 'side pivots ti, the bar K being free to turn insaid bearing-block, also to work 'through it, to ac- "eonmodate different directions vof feed.

flhis rocking-bearing Lprovides for an up-and-down ,motion tothe feeder K', to maket take hold on the material during its feeding-stroke', and to release hold of the same during itsback stroke, by the combined action of a spring, M, and a wedge, N, the former serving todepress the feeder, 'and the wedge N operating 'to raise it. To accomplish this the wedge N is ar ranged fto work Vover the"back eud ofthe 1'ocking bearing-block L, between it and the table, and so that, .oni being projected forward over saird back end or portion of the block, it throws up the-feeder K', and in the back-stroke ofthe wedge the spring M acts in a reverse direction.

-Said wedge N is operatel by an eccentric,h0, on the driving-sliatt D. The means are the same, anda like np-and-down motion of the feeder takes pla/ce in,all four directions of the feed, and the eccentric 0 is suitably set to prducc the same in proper or timely relation with the other motions or parts.

'The feeder K'. is not. only a four-motion one in any direction of the feed, but is also made capable of feeding the material in any one of fourdi'erent directions, that; is to say, either forward in direction of the length of the table, or backward thereon, or across the table to the right and to the left.

All of these several feeds are produced lby a single cam, 1, and lever, Q, acting in conjunction with springs 'lhe cani l is arranged ou a vertical shaft, 1l., so as to vibrate therewith, and yet becapahle of longitudi.

nally sliding on the same.

l 1l; is vibrated by a eran'k,jon thc shaftR, actuated by an eccentric, S, on the driving-shaft 1), and is raised or lowered, as required, to'changc the feed, by a lever, '.L, made to lock by a spline on its side, into any one of a series of notches, 1.', at the side of a slot in which said lever plays, and which determines the attitude of 'the cam for any particular feed.

Said cam P is* made with a series of inclines and concentricsuriiices, arranged in c successioni of planes or lines, the one above the other, for teats, l l', on the lever Q, to bear against.

This ierer Q secured to the feed-bar K, and is made with twoicgs, 1n m', arranged to stand so that the tents i l' point in directions at right angles to cach other, that is, the one hears against the cani P-in a. direction parallel with theI feed-bar, while the other tent heals on said cam in a crosswise direction thereto.

rlhe teat l serres to gire' forward or backward feed to' the feedenli' in direction ofthefmhleywliiltho.

`trat l' operates to produce feed erosswise of the table, to the right; or to the left, accordingly as the cam P is vraised or lowered to bring its different inclncs and concentric surfaces opposite their respective tents, and these surfaces are'so disposed that when the one tent, l, is being operated by an incline on the cam, to give longitudinal motion to the feed-barK, the other tear, I', is bearing on a concentric surface, and vice tersa, that is, when the tcat l is being operated on by an incline, to rock the feed-bar foreither cross-feed, the. other teat, l, is free from action by bearing on a concentric surface.

To produce the four diercut feeds, there are consequently" four incline and four concentric surfaces on the cam, suitably disposed, or set on or around two faces cally adjustable positions of the cam. Y

Thus, referring more particularly to the diagrams,

and concentric surface, 'n, on the cam, serves, when the latter is adjusted, to make snclrthe working-surfaces, l to produce action ont-he teat l', to canse a cross-feed in the direction indicated by the arrow o.

When said carri, P, is lowered a notch, t-hcn an upper incline, n, and concentric surfacc, n, is brought in contact with the teatsl l to produce forward feed, as .indicated by the arrow o' -li/'hen lowered a further notch, then thc cam, by an incline, n', in conjunction with the spring andtconcentric surface n, allows of m orement; to the teat l', and relieves the teatl of action to give a reverse eross-fecd in (Erection ot the arrow ofand, when still further depressed, an incline, n', opcrates in conjunction with the spring z, en the teat l, to produce a. backward feed, as shown by the arrow o, the other teat, l', resting on a concentric surface, n.

The, direct-ion in which the vibrating-cam travels while performing its feeding-stroke is represented by the arrow o in each of the diagrams, -{igs. 5, 6, 7, and 8.

The length of the feed in any particular direction is determined by the adjustment ofthe tents I l relatively to the cam, so as to bring them sooner or later into cont-act with the inclineson the cam, and this is effected in the one instance by nuts, lr'r, acting in and made to fit the end of the feed-bar, while che cross-fecd is similarly adjusted, as regards the length of the stitch, hy similar devices, r' 'r' s', and spring z',

desired to he secured by Witnesses: i

Flinn. Harmes, HENRY PALMER.

figs. 5, 6, 7, and S, of the drawing, a lower incline, n,

conjunction with the spring z against ascrew-collar, s,4

opcratingagainst or in connection with the longer leg

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