USRE1538E - Improvement in knitting-machines - Google Patents

Description

PATENT OFFICE.

.lilll Plillllt, 0l" IIOLDIZRNESS, NEV HAMPSHIRE.

IMPROVEMENT IN KNlTTlNG-MACHINES.'

Specilieation forming part of Letters Patent No. 13

,289, dated July 17, 1865: Reissue No 1.538, dated To all whom z't may concern: i Be it known that l', JOHN PEPPER, of Holdei-ness, in the county ot' Grafton and State o t' New llainpshire, have invented a new and usel'ulor Improved Machine for Knitting either Ilain or Ribbed Fabrics; and I do hereby f declare that the same is fully described and represented in the following' specification and the accompanying drawings, letters, figures, and references thereto. l

0f the said drawings, F

igure 1 denotes a top view of my machine.

l Fig. 2 is a front eleva- ,l tion of the same. Fig. 3 is a rear elevation 5 of it.v Fig. y4 is an end view of it, the saine i being taken so as to exhibit that end at which the driving-pulley is situa-ted. Fig. 5 is a transverse and vertical section takenthrough the upright crank-shaft, to be hereinafter described Figs. 6, 7, 8. 9-10, 11. and 12, details i to be referred to hereinafter. A

In these drawings, A exhibits the frame of the machine, it being constructed to carry or support a driving-shaft, B, a camshaft, C, and a vertical crank-shaft, D, which plays`= within an upright tube, E, arranged as seen l in the drawings. Ihe driving-shaft isl exhibited in Figs. 1 and 2 as operating through a tube F, extending from one end of the machine, as shown in Figs. 1 and 2 by `dotted lilies. It carries a fast and loose pulley (see l a bf) upon its outer end, while upon its-inner end there is attached a pinion-gear, a, which I engages with a larger gea-nb, fixed upon the g cam-shaft C. Ihe two shafts U and D have engaging beveled gears c d, for the purpose j of eomnuinicnting motion from one to the; other of them. 'lhe top'bar, c, of the frame of the machine is stationary and provided with a series ot' transverse grooves, o c c,.f0r the reception of the hooked needles H H H, l the said needles being arranged horizontally, i and so that each can be capable of sliding,` hmgitudinally in one ot' the said grooves. 1 The needles are kept in place by a cap-bar, I, which extends over them, and is screwed to the top bar, e, as seen in Figs. 1 and 2.A Each needle has the rear end or part of its shank bent upward at right angles to the seat of the shank, as seen in Figs. 5 and (i, the latter ligure being a side view ot' one of said needles.

There is applied to the hook of each needle a I rib-needles I) I l) closing self acting fly, g, it being a device Well known and in common use.

The object of making the rear part of the shank of each needle to stand at right angles, or bent with respect to the shank, as described, is to enable such part to enter and work in the groove h ot' a sliding bar, K, an under side view of which is represented in Fig. 7.

The oar e is constructed with its rear thicker than itsl forward portion, 3, or elevated above it, as shown in Fig. 12, the upright or bent portion 5 of the needles H traversing in the thicker portion 4 of the bar, and thus the needles are prevented from rolling, and are preserved more exactly iu their proper post tion than would be the case were the straight shank of the needle alone depended upon for the purpose.

The bar Kvsupports 'the yarn-guide Il, and

is arranged above the needles, 1-` 2, and 5, and is made to slide freely in a longitudinal direction, so as to carry the yarnguide L across the series of needles. In the rear of and below the yarn-guide L the groove h is made V-shaped or angular, as seen at .i inFig. 7, the object of this being' to impart to each needle a forward4 and backward movement, in order to enable it not only to seize the yarn, but to move its y g forward beyond the stitch on the shank ot the needle.

The sliding bar K has intermittent reci pro- 4eatin g longitudinal movements imparted to it, they being produced by lneans ofa crank, M, anda slotted connecting-rod, N. rlhe crank as seen in Fig.

M projects horizontally from the upper part ot' the shaft I), one end of the connectingrod being joined to the outer end of said crank.

There is a slot, k, formed through the connecting-rod, as seen in Fig. I,and made to receive a pin, l, extending upward from an arm, m, projecting from the sliding bar K. The object ofthe slot in the connecting-bar is to enable the bar K to be stopped in its movement while the sinkers are performing their motions. In connection with the needles I employ a series of sinkers, 0 0 ,0., (See Figs. 1, 2, and 5.) Each of these sinkers,with the exception of those which are termed cast-olf sinkers,7 andlie directly back or behind the is formed with a hook, as seen at n, Fig. 4, while each remaining or ward from a rocker-shaft, T, the sa hoek, as hereinbefere cast-o' sinker `is constructed without vany such hook, or takes the form as shown in side view in Fig.8. Theseveraisinkers are afxed to a horizontal bar, Q,whose ends are attached to two bars, R I,which are respectively jointed to the upper ends ot' arms S S, projecting upine being as seen in the drawings. The sinker-bar h an upward and a forward motion imparted to `it at suitable times,

the upward motion being for the purposeot' casting oit` the loops formed upon the front portionsot'thehooks of the siukers. The forwardmotions of the sinkers is for casting the loops over the heads or hooks of the horizontal needles. These movements areA produced by` two sets of cams, o p, which are fixed upon the camshaft, as seen in the drawings, and are resjiectively made to oper ate against frictionrollers r r r, applied tof the lsides of the projections from the bars It R.

Fi g. while Fig. p, their relative position on the exhibited in Fig. 11.

In connection with the series of needles hereinbefore described, I lapply a. set of ribneedles, 1 1 l, which project upward from a horizontal bar, U. They are made to work between the sinkers, and each of them is disposed directly in front of some one of the cast-off sinkers, which is made without any explained. is provided at its two extremities with adjusting stop screws s s, whose inner ends abut against the frame-work, as seen in Figs. 1 and 2. The object of these screws is to adjust the rib-needles so as to vary the length of Jche rib-loops as circums'ances may require. Such 10 isa side view of one of the cams shaft being rib-needle bar is mounted upon posts V V,

whose lower ends are hinged or jointed to larms W W, projecting horizontally, or thereabout, from arocker-shaft, X, arranged as seen in the drawings. upon a steel spring, Y, by which they are elevated at a proper time, they being depressed by means ot' a cam, Z, tixed upon the camshaft (l, and made towork against al roller, t, carried by a post or arm, u, the rocker-shaft X. its relative position to the other cams are'exhibited. The forward motion of the rib needlebar is effected by the forward movement and pressure of the sinker-'bar'Q, whilevthe rea-rward movement o f it is produced by the back draftof the sinker-bar on the work on the ribneedles, such sinker-bar being carried backward by a spring,V, as seen in the drawings.

Having thus described the construction of thatitis adapted to weaving either plain or ribbed work, as y my machine, I would rem ark occasion may require. While plain. work is being woveir by it the rib-needles and their supporting-bar are turned downward into the 9 is a side view of one of the cams o, i

The bar U 1 The said arms W W rest l extending from 1n Fig. 1l this cam and tially as described, the series of cast-ott' sinkl position exhibited by dotted lines in Figs. 4 i and 5. l The opera-tion of the machine may thus be l described: The yarn-guide, carryingthe yarn, g is iirst' moved over the needles during and by i the movements of the bar K. This operation lays the yarn in the hookslof the plain and rib needles and around the front ends of the hooked siukers. Next, the sinkers rise up so 'i as to cast oil' the yarn from the front parts of the hooks ot' those which are hooked, the ribl needles ait the same time being made to move downward, so as to draw their loops through those that previously may have been formed I on theirslianks. Next, the sinker-barismoved forward, so as -to cast the stitches on the i Shanks ofthe plain needles over those in the l hooks thereof. Next, the sinker-bar is moved i downward,-aud catches the work in the throats i of the sinkers and draws it downward, so las to carry the loops of the 4rib needles entirely l, below theirilies. Thus, the several operations i required in `the construction ot' rib-work are successively carried on.

In the performance of plain work the 0p- @rations of the'horizontal or plain needles and g those ofthe sinkers are essentially as hereinpbefore described, the rib'needles being moved out ofthe way or turned downward, as herelinbefore mentioned.

the sinkers that 'is made without a hook performs the same function in moving the work forward as does each of the Shanks of the g hooked siukers. 1t docs not perform any other ,f function, or, in other Words, it does not aid in the formation of loops or receive yarn from the yarn-guide, a-sdo the hooks of the hooked i siukers. y I therefore term each ofthe sinkers constructed without a hook a east-oft' sink.- 1 er, in order to distinguish it from the hooked 'l or loop-forming siukers.

I clainil. The bar e with its grooves c, having its l rear elevated above its forward portion for l, the .purpose ot' preventing the needle from l, rolling, as described. l 2. ln combination with the hooked sinkers and ribbed needles, made .to operate substaners, orthose formed without hooks, the same heilig arranged in thesinker-bar, and not only so as to admit the rib-jleetlles to work between the hooked sinkers, but so as torender the machine capable of performing either plain or ribbed work, as specified. j

3. Making the rib-needle take the place of f the front or hook of the sinker in forming the loop for the rib-stitch.

JOllN PEPPER.

Witnesses i J. L. VVILSUN,

S. M. WRnin'r.

The shank ot' each et

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