US94904A - Improvement in knitting-machine - Google Patents

Description

llutrll 51ans stent @with Letters .Patent N 94,904, dated September 14, 1869.

R l l.

y IMPROVEMENT .IN-KNITTiNe-MACHINE.

The Schedule' referred to in 'these Letters` Patent and making part of the same.

To all whm itmay concern vented an Improved Knitting-Machine; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the annexed d awings, making part ot' this specilication, in vwhich Figure lisa view, partly in section and partly in elevation, ofthe tapering needle-cylinder, showing the cam-cylinder in red outlines.

Figure 2 representspartial horizontal sections in lines x x and y y oftig. 1..

Figure 3 "represents similar sections on lines z z and w 'w of fig. 1.

Figure 4 is a sectional elevation of the cam-cylinder, showing the arrangement of the grooves in its interior surface. v

Figure 5 is a side elevation'thercof.`

Figure 6 is a plan or top view of the same,

`Figure 7 is a perspective view of the removable slide. e

Figure 8 is a sectional elevation of the machine, showing its arrangement when doing large work.

Figui-e9 is a plan or top view of the, bed or frame in which the needle-cylinder is to be held.

Figure 1() is a longitudinal section thereof.

Corresponding letters refer to corresponding parts in the several iigures.

My invention relates to that class of rotary knittingmachiues, in which a circular series of latched needles, placed in vertical'grooves on the outersurface of a stationary needle-cylimler, with buts projecting into grooves formed in the inner surface of the cam-cylim der, is made to formthe stitches, by alternately elevating and depressing the needles as the cam-cylinder is revolved; and myv improvements consist in provid ing a tapering needle-cylinder and cam-cylinder, so

constructed and combined that the needles may be used at either end, andthus larger or smaller work be made on the sameA machine.

To enablethose skilled in the art to make and use my invent-ion, I will proceed to describe its construction and opera-tion.

A, in the drawings, represents the frame or bed, so

constructed that either end of the needle-cylinder may be firmly held therein. 1t is to be vclamped to the ledge of a table or stand by mea-ns of a clamping-de# vice, as shown in 10.`

B represents a tapering hollow cylinder, which may he made in two sections, to be tirmlypjoined together in any approved manner, for the purpose of facilitating the formation of the vertical grooves on its exterior surface,in which the needles reciprocate, said grooves on one end not being in line with all in the other.

i spindle secured to the support 111.

These grooves are to be equal distances apart at either endof the cylinder, and their number is determined .by its circnmferences and the character of the work to be performed by the machine.

Formed in the exterior surface are the horizontal grooves b and bl, for the reception'of the guide-pieces holding the cam-cylinder in position, as also a depression, b2, where it is to be irmly--held by the frame when the large end of the cylinder is to be used.

G represents the cam-cylinder or'shell, which is tted neatly on the needle-cylinder, between the grooves band bl, so that each end'of the latter pro# jects the proper distance therefrom. It is held in position bythe guide-pieces c and c, which are semiannular' rings screwed to each' end of the shell, after the same has been placed over the needle-cylinder, and projecting into thegrooves b and b1 thereof'. Its interior arrangement diners-from that now incomincn use in rotary knitting-machines of this description only in this respect, namely, that its interior surface is tapering to lit over the tapering needle-cylinder, and providedwith two cam-grooves, O1 and O2, for giving motion to the needles, the former being used when operating with the smaller end of the cylinder, and the latter' when larger work is .to he made at the other end.

Sliding cams C `and C4 may be made to increase or lessen the sweep ot' the needles, and thus looser or tighter stitches be made, in the ordinary manner.

The cam-cylinder is revolved by means of its handles c2, secured to it in any convenient manner.

I) represents the removable slide, which is to be placed in a space between the semi-annular rings at either end of the shell, its guide d sliding in a dovetailed groove in the interior surface thereof, said groove extending from the top of the cam-cylinder at each end down to each of the cam-grooves, and being of the same depth therewith. By removing this slide and bringing the groove successively opposite all the lneedle-grooves, passages are opened, through which `the needles may be inserted in, or withdrawn from the machine, affording a convenient means of changing the needles from'one end of the needle-cylinder to therother.

E represents the' yarn-carrier, which revolves on a This support is a bent piece of iron, the ends of which are bent so as to form iianges. It can be attached at either end of the shell by means of set-screws passing through slots in its tlanges .and screwed into the shell.

F represents the yarn-guide, which is also made detachable, and can be mounted on either end of the shell, as circumstances may require.

This machine is more particularly designed to make stockings, but a variety of other articles, such as under-shirts, childrens jackets, shawls, &c., may beV made on it, by makinga flat web with selvage, as in making the heel' or toe of stockings, with nearly all the needles, and then uniting the pieces by hand. Its peculiar advantages for making stockings are, that the large end or calf may `be made ou the large end of the machine, and the work can then be transferred to the small end to complete it, thus obviating, to a great extent, the objectionable necessity of knitting looser and tighter at different stages of the operation. Large stockings may be made on the .large end, and small ones at the' small end of the machine, by employing all the needles, and other sizes by removing every fourth, lifth, sixth, Snc., needle, narrowing being effected by lifting loops off some of the needles and putting them on those next by, and removing the empty needle.

Widening and narrowing may also be effected, to

some extent, by changing the sweep of the needles by means of the sliding cams.

Having thus described my invention,

What-I claim, and desire to secure by Letters Patent, is

l. A rotary knitting-machine, having atapering structed and operating as described, so that a fabric may he knit at both ends of the needle-cylinder, sub stantially-as and for the purpose set forth.

In. testimony whereof, I have signed my name to this specification, in the presence of twov subscribing witnesses.

J. MCGUNE.

W'itnessesz -W. W. GmsWoLD, H. E. ALTENBURG.

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