US331401A

US331401A - Wabben d

Info

Publication number: US331401A
Authority: US
Publication date: 1885-12-01
Anticipated expiration: 1902-12-01

Description

UNITED STATES PATENT OFFICE.

WARREN D. HUSE, OF LAOONIA, N. H., ASSIGNOR TO ORISON TWOMBLY, OF LAKE VILLAGE, N. H., AND THOMAS S. NOVVELL, OF BOSTON, MASS.

KNITTING- 5PE@IFI@ATION forming part of Letters Patent No. 331,401, dated December 1, 1885.

Application filed July 28, 1884. Serial No. 138,942. (No model.)

To all whom it may concern:

Be it known that l, VARREN D. HUSE, of Laconia, in the county of Belknap and State of New Hampshire, have invented a new and useful Improvement in Knitting-Machines, of which the following, taken in connection with the accompanying drawings, isa specification.

My invention relates to that class of knitting-machines known as circular, in which latch-needles arranged to be moved endwise to form the stitch are used; and it consists in a springsinker and mechanism connected therewith for imparting to said sinker a positive outward movement as the needle begins to descend, so that the loop drawn down by the needle will be drawn over said sinker inside of its hook, and then release said sinker and permit it to be moved inward and carry with it the loop just formed thereon by the tension of its spring.

It further consists in certain combinations of parts, which will be readily understood by reference to the description of the drawings and to the claimsto be hereinafter given.

Figure 1 of the drawings is a central vertical section of a portion of a machine embodying my invention. Fig. 2 is a plan of a portion of the radially-grooved annular plate with a number of the sinkerbperating hooks in position therein. Fig. 3 is an inverted plan of a portion of the cam for moving the sinkeroperating hooks. Fig. 4. is an elevation of a portion of the inside of the upper section of the needle-cylinder, showing the vertical grooves formed therein to receive and support the sinkers. Fig.5isa section of the same on line mm on Fig. 4. Fig. 6 is a plan of a small portion of the lower section of the needle-cylinder. Fig. 7 is an inside elevation of the same. Fig. 8 is an elevation of the sinker detached from the machine, and Fig. 9 is a diagram illustrating the relative positions of the sinker and needle at the time the loop is being formed over the sinker.

A is the base-ring or bed of the machine, having firmly secured thereto the needle-cylinder B B, and having mounted thereon the needle-operating cam-cylinder D, all arranged and operating substantially as described in another application of mine filed July 21, 1884, and numbered 138,349.

C is the needle, fitted to move vertically in grooves 12 in the periphery of the cylinder B B, and has imparted to it a vertical reciprocation by the cam-cylinder D, substantially as described in said prior application.

The needle-cylinder is made in two parts,

B and B, secured together by the screws a, shown in Fig. l.

E is the sinker, made from springwire bent to the form shown in Fig. 8, to form the shank 0, lug c, hook c", and the downwardly-projecting finger 0 as shown. The upper end of the lowersection, B,of the needle-cylinder has formed therein a series of radial grooves, d, 6 5 as shown in Figs. 6 and 7, said grooves being designed to receive the lugs c of the sinkers E, which lugs engage with the lower side of the inwardly-projecting rib Z) on the upper section, B, of the needle-cylinder, and thus effectually prevent the sinkers from being moved upward. The inner edge of the rib b of the section B of the needle-cylinder has formed therein a series of vertical grooves, e, as shown in Figs. 4 and 5, to receive the straight portions of the shanks c of the sinkers E and hold them in an upright position. The sinkers are held in place in said grooves by the ring F, which screws into a female thread formed in the lower section, B, of the needle-cylinder, a portion of the outer surface of the ring F being left smooth or without thread, as at f, Fig. 1, which fits closely to the inner surface of the rib b, as shown. The upper portion of the ring F is curved outward and has its edge rounded, as shown. which rounded edge bears upon the curved portions of all of the sinker-shanks c in such a manner that by adjusting the ring F up or down the sinkers E may be so adjusted simultaneously that all their hooks 0 will be at a greater or less distance inside circle of the needles when in their normal positions, the rounded edge of said ring acting upon the curved incline portions of said sinkers to press 5 them outward, and serving also as the stop to limit the inward movements of the several sinkers caused by the spring of their shanks front of the hook c are fitted to rest in radial groovesg g, formedin the upper end of the upper section, B, of the needle cylinder, and are guided thereby in their inward and outward movements.

A series of rods or bars, h h, each provided with the lug h and hook h are fitted to and move endwise in radial grooves formed in the upper side of the annular plate G, said endwise movement being imparted thereto-by the cam-ring H, having formed in its under side the path 1', provided with the throw t, as shown in Fig. 3, which path engages with the lugs h on the hook-bars h, as shown in Fig. 1.

The normal position of the sinker is as shown in Fig. l, and the cam-ring H is so arranged relative to the needle-operating camcylinder D that the sinker E, the finger c of which engages with the hook h of the bar h, is moved by the throw 4." of the path i to the extreme of its outward movement, as

' shown in Fig. 9, just before the needle immediately in advance thereof has been drawn down to its lowest position, so that the yarn drawn down by said needle will be drawn in the form of a loop over said sinker in front or inside of the hook a". The hook-bars h are immediately moved inward again by the reverse portion of the throw 2" of the path 2' in the cam-ring H, but said inward movement of the hook-bars does not of necessity cause a corresponding inward movement of the sinkers by virtue of the fact that the hooks h" are open at their outer ends and simply move away from the fingers c of the sinkers, each of which when released by the hooks h moves inward only to the extent allowed by the tension of the yarn thereon, and when the tension of the spring in the shank of the sinker overcomes the tension on the yarn as the needle rises, when the sinker will automatically assume the position shown in Fig. 1. The sinker may be turned upward at the point where the hook-bars h connect therewith, so that said hooks will tend to hold the sinkers down.

I am aware of the inventions shown and described in Letters Patent No. 183,169, granted October 10, 187 6; the English Patent No. 2,201 of 1883, and the German Patent No. 23,211, and do not claim anything therein shown or described; but

What I claim as new, and desire to secure by Letters Patent of the United States, is-

1. A spring-sinker for knitting-machines, made of wire, and having the parts 0, c, 0

and 0 arranged relative to each other, substantially as shown and described.

2. The spring-sinker E, in combination with the needle-cylinder, a series of needles, a cam-cy1inder provided with a cam-path for operating the needles, the hook-bars h, and the cam-ring H, provided with a cam-path for operating the hook-bars, all arranged and adapted to operate substantially as and for the purposes described.

3. The combination of the needle-cylinder, made in two parts, the series of spring sinkers E, and'the adjusting and holding ring F, all arranged and adapted to operate substantially as described.

4:. The combination of the sections 13 and B, of the needle-cylinder, the former pro-,

WVARREN D. HUSE.

Witnesses:

WV. L. MELCHER, JAMES D. LINCOLN.