US22004A - Knitting-machine - Google Patents

Description

IHMHLIH MPETERS. FHUTU-LITHGGRAFHER. WASHINGTON D C E FFT@ W. AIKEN, OF FRANKLIN, NEW HAMPSHIRE.

KNITTING-IVIA CHINE.

Specification of Letters Patent No.

To all whom it may concern:

Be it known that I, WALTER AIKEN, of Franklin, in the county of Merrimack and State of New Hampshire, have invented certain new and useful Improvements in Knitting-Machines; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference beinghad to the anneXed drawings, making a part of this specification, in which- Figure l, is a front view; Fig. 2 a top view. Fig. 3, an end view. Fig. 4, shows the bottom of sliding bar, and Fig. 5 shows the kind of needle used.

The same letters refer to like parts in all the drawings.

A, is the body or frame of the machine.

B is the needle bar on which the needles poie, and is fastened to frame A, by screws C is the cap which connes the needles in bar B, and is held down by the screws R, R, as shown in Fig. 2.

D is the sliding bar which gives mot-ion to the needles H, H, H. The bar D, runs in the boXes E, E, as shown in Figs. l, 2, 3.

I, is the yarn carrier attached to the bar D, by means of the screw J, as shown in Figs. l, 2, 3.

S, is a bar holding the plates L, L, L, between the needles for the purpose of keeping back the knit fabric, and to assist in throwing off the old loops from the needles and in forming new ones, and is secured to the frame A, by means of screws Gr, G, as shown in Figs. l, 2, 3.

F, is the rocker bar attached to the frame A, by the pivot screws T, T, on which it turns.

N, is a spring catching into the pin M, for the purpose of holding up the bar F, as shown in Fig. 3.

The shanks of the needles H, H, H, are bent up as shown in Fig. 5, and run in groove O, in sliding bar D, as shown in Figs. 3, and l. As the bar D, is moved, the shanks of the needles run in the groove O, which gives them forward and back motions corresponding to the shape of the groove O, as shown in Figs. 2, and 4. The rocker bar F, has teeth on its inner edge as shown in Fig. 2, for the purpose of holding back the knit fabric when the needles are moved out.

K, K, are lingers secured to the plate F,

22,004, dated November 9, 1858.

for the purpose of holding down the yarn on the selvages, so that the selvage needles may always move out over the yarn, and they also serve to take up the slack yarn until it is fed into the needles. The fingers K, K, are shown in Figs. l, 2, 3. The bar F, can be turned down as shown by dotted lines in Fig. 3, for the purpose of giving access to the needles H, H, H. The yarn carrier has a hole through it as shown in Fig. 3 for the purpose of feeding the yarn to the needles.

Having described the different parts of my machine I will proceed to describe its operation.

Tnsert the yarn into the carrier I and move the bar D across the machine. As the bar D is moved the needles are slightly drawn in, which insures all the old loops being cast off over the hooks of the needles. They are then moved out and as they do so they seize the yarn from under the carrier I, the plates L, L, holding back the knit fabric. They are then drawn in, new loops are formed, when they are again slightly moved out so as to loosen the loops around the plates L, L, and thus dispense with friction which would be produced if the needles were not thus moved out. As the bar D, is moved across, the selvage needle draws the yarn over the finger K, and places it under the linger. Upon the return of the bar D, the needles are slightly drawn in, are then moved out, the yarn is wound around the finger K, which serves to take up the slack yarn, they are then drawn in, taking the slack yarn away from the linger K, form new loops, and cast ofi' the old ones, the plate F, holding back the knit fabric as the needles are moved out. By continuing to move the bar D, the same operations are repeated, and the knit fabric passed down between the plate F and the plates L, L. The advantages derived from my improvement are these. By means of the peculiar shaped cam groove each needle is drawn in just before it is moved out, thus insuring the casting off the loops from over the hooks of the needles, and as soon as new loops are formed the needles are moved out releasing the strain upon the loops around the plates L, L, and thus dispensing with all friction. By means of the treble motioned cam groove I am also enabled to dispense with the vibrating yarn carrier and the mechanism to work it. By means of the fingers K, K, the yarn is sure to be fed into the selvage needles, even should the old loops by any imperfection in the yarn be broken off from them, so that a good selvage is always produced. In the operation of knitting on a straight machine the yarn is sometimes thrown out of theA hook of the outside needle by a knot, mote, or bunch in the yarn and in such cases the needle Will not form a new loop, consequently the machine must be stopped and a new loop put on by hand. The device which I have invented and which I call a selvage inger is designed to remedy this defect by keeping loops upon the selvage needle and 15 is applicable to machines of a di'erent construction.

I claiml. The peculiar shaped cam groove constructed and operating substantially as 20 above described.

2. I claim the selvage fingers substantially as above described.

WALTER AIKEN.

Vitnesses:

EPHRAIM G. VALLACE, DAVID J. HAMBLETT.'

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