US411303A

US411303A - Machine

Info

Publication number: US411303A
Authority: US
Publication date: 1889-09-17
Anticipated expiration: 1906-09-17

Description

3 Sheets-Sheen 1.

(No Model.)

A. E. SANBORN & 0. L. MERROW.

KNITTING MACHINE.

Patented Sept. 17, 18819;

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A. E. SANBORN & 0. L. MERROW'. KNITTING MACHINE.

No. 411.303. Patented Sept. 17, 1889.

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(No Model.) 3 Sheets-Sheet 3. A. E. SANBORN & 0.. L. MERROW.

KNITTING MAGHINE.

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ALBERT E. SANBORN AND OSCAR L. MERROW, OF LAOONIA, NE\V HAMPSHIRE, ASSIGNORS OF ONE-HALF TO DENNIS OSHEA AND JOHN OSHEA, JR, OF

SAME PLACE.

KNITTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 411,303, dated September 17, 1889.

Application filed August 20, 1888.

To all whom it may concern.-

Be it known that we, ALBERT E. SANBORN and OSCAR L. MERROW, both of Laconia, in the county of Belknap and State of New Hampshire, have invented certain new and useful Improvements in Knitting-Machin es, of which the following is a specification.

It is the obj eet or purpose of our invention to provide such improvements in knittingmaehines as will enable the operator to per form tuck-work on the cylinder-needles (in case the invention is applied to circular machines) in any desired order or pattern and to automatically change from tuck to plain work, and to do these things with mechanism of minimum simplicity.

Our invention consists of the improvements hereinafter fully described and claimed, referencebeing had to the accompanying drawings, and the letters of reference marked thereon, forming a part of this specification, of which drawings- Figure l is a front elevation of a circular rib-knitting machine of the kind commonly known among knitting artisans as a Pepper machine, equipped with my improvements. Fig. 3 is a side elevation, part being broken away. Fig. 4 is a detail sectional View taken on a line running through the vertically-movable stitch-cam. Fig. 4* represents the positions of the ordinary fixed cam c and one of the needles resting on said cam on the opposite side of the cylinder from the parts shown in Fig. 4:. Fig. 5 is a detail view of the vertieally-movable stitch-cam, looking from the interior of the cylinder outward.

Similar letters of reference designate similar parts in all of the views.

Although our invention is here shown applied to a machine employing both cylinder and dial needles, so as to be capable of performing rib=knitting, the use of dial-needles is not in any way essential to the practice of the invention, since our improvements may just as well be employed on a machine organized to produce work on the cylinder-needles alone.

' In the drawings, A designates the needlecylinder; B, the rotary cam-cylinder; C, the

Fig. 2 is a top plan view of the same- Serial No. 283,212. (No model.)

needle-dial; D, the rotary cam-dial; E, the yoke for supporting the needle-dial and connecting the cam-cylinder with the cam-dial,

ated in unison. The several parts mentioned are of usual construction, arrangement, and function.

For the sake of elearness of illustration we have omitted to represent any needles in Figs. 2 and 3 and a sufficient number only in the remaining figures to explain the nature and use of our improvements.

The machine shown is equipped with two yarn-feeds 2 and 3, it being understood that a stitch or knitting cam or set of cams eo-opera-te with each yarn-feed.

In carrying out our invention we fit out the needle-cylinder with two sets or series of needles, one set or series a, having short latches, and another set or series Z), having considerably longer latches, as shown in Fig. 5. The long-latch needles I) are arranged to knit at the points where it is desired to produce tuckstitehes in the tubular web.

It is now to be understood that the knitting or stitch cams at the yarn-feed 3 are of such a character as to raise both series of needles sufficientlyhigh to carry the loopsof yarn in their hooks below the opened latches, so that when yarn for new loops is fed to the needles and the latter are drawn down the old loops below the latches will be cast off and plain knitting will be performed. At the yarn-feed 2, however, the needle-raising cam 0 will, in what we term its normal position, (which is understood to be its lowest position,) raise the needles a and b sufficiently high to carry the loops in the hooks of the needles at below their opened latches, but not sufficiently high to effect this result on the needles 1). Consequently when yarn for new loops is laid into the needles by yarn-feed 2 and said needles are depressed the old loop 011 the needles a will be cast off, while the needles I) will hold two loops (the old and the new) in their hooks until knitting at the yarnfeed 3 is effected, when both series of needles will take new loops and cast off their old loops, as before explained. It knitting should proceed under these circumstances, it will be so that the two latter elements may be oper- I IOO readily understood that a tubular web will be produced with longitudinal lines or wales of tuck-stitches formed therein by the series of needles b.

If dial-needles are employed, they will be used instead of the needles a, and operate in the same manner at both yarn-feeds.

In order to change from tuck-stitch knitting to plain knitting on the needles I) at the yarn-feed 2, whenever it maybe desired to do so, we make the cam c for raising the needles at this point adjustable vertically-that is, we construct said cam so that it may be raised from what we term its normal position to the position indicated by dotted lines in Fig. 5 to a point sufficiently high to raise the needles b as well as the needles a, so that the old loops will pass below the latches and be cast off when the needles have caught the yarn to form new loops, and are drawn down with such loops in their hooks. We accomplish the raising and lowering of cam 0 automatically at predetermined intervals with mechanism which we will now proceed to describe.

d designates a pin extending through a vertical slot 6, formed in cam-cylinder .B, said pin being attached at its inner end to cam c and connected at its .outer end with the lower end of a link f, extending up through a slot formed in a bracket g, attached to the cam-cylinder B.

h designates a slide arranged to operate horizontally on bracket g and extended through a slot Z, formed in the part of the link f ex tending above the bracket g, as shown in Fig. 4. Slide It has its upper surface formed in two planes, the plane 4 being higher than the plane 5, with an inclined surface 6 connecting the two. When link f is sustained on the lower surface 5 of slide h, as shown in full lines in Fig. 4:, cam 0 will be in its normal or lower position, as represented in full lines in Figs. 4 and 5. When, however, the slide h is moved inward toward the cam-cylinder, as shown in dotted lines in Fig. 4, so that link f will be sustained upon the higher surface 4 of slide h, cam 0 will be correspondingly raised, as indicated in dotted lines in Fig. 5, with the effect of raising the needles, so as to make those having long latches, as well as those having short latches, perform plain knitting, as hereinbefore explained.

A pin j from slide h projects down through a slot 70, formed in bracket g, the end of arm 1 of a bell-crank lever fulcrumed at m on a bracket n bearing lightly against the forward side of said pin j, and a spring y, connected wit h the short arm 2) of said bell-crank lever and with the cam-cylinder, serving to keep arm Z and pin j in the relationship shown and explained.

wheel rotates to be brought under the foot of a vertically-movable rod 25, sustained in suitable bearings of a bracket a, supported by any suitable stationary part of the machine or its frame.

11 designates an inclined cam secured to the upper end of rod tand operating through a slot formed in bracket it against the outer end of a slide 11;, provided on its inner end with a cam 00, adapted, when the slide to is moved inward a short distance, to have pin of slide h brought in contact therewith in the revolution of cam-cylinder B, and when said slide w and cam 03 are moved in still farther to have said cam struck by arm 19 of the bellcrank lever after having been struck by pin j. The outer end of slidew is held back in contact with the inclined face of cam u on rod 23 by means of a spring 0, so that as said rod and cam are raised the slide w will be moved inward, and when they are lowered, as they will be by their own gravity when left free, spring 0 will move slide an outward.

WVhen cam 00 is so positioned as to have pin 7' strike it in the revolution of the cam-cylinder, and thus move slide it inward sufficiently far to have the link f sustained on the higher surface 4 of said latter slide, the cam 0 will be raised, as before described, and this will occur when one of the low lugs or swells s of pattern-chain r is brought under the foot of rod t, and when slide 10 and its cam m are moved inward still farther by a high lug or swells, passing under the foot of rod 25, so that as arm 19 of the bell-crank lever will strike said cam 00 in the further revolution of the cam-cylinder, said bell-crank lever willbe turned on its fulcrum so as to have arm Z operate on pinj. of slide h and move said slide outward to the full-line position, Fig. 4, and so permit cam c to fall. It is to be understood that after arm 19 strikes cam 00 the rod i will pass off from cam-swell s of the pattern-chain, permitting said rod to fall and slide to to move outwardly.

Sprocketwheel q may be operated in the manner and by the means shown and described in United States Letters Patent No. 347,505, dated August 17, 1886, or by any other known or suitable means, such means forming no part of our present invention.

If the needles in the needle-cylinder should be so arranged that every third needle should be a long-latch needle, and the cam 0 should be maintained in its depressed or full-line position, a web would be produced in which each third wale would be knit in tuck-stitch, and with this arrangement if a colored yarn should be delivered ito the needles by yarnfeed 3 and a white yarn by yarn-feed 2 a web would be produced in which the wale formed by the tuck-stitch needles would appear on the face as a colored vertical stripe, and those wales formed by the other needles would appear as mixed vertical stripes. If cam c, with this arrangement and supply of yarn, should be raised, a fabric would be produced with fine transverse or horizontal stripes, each course of loops forming a stripe.

By lowering cam c and knitting one or more courses and then raising said cam, with the needles arranged as before explained, and knitting a like number of courses, a fabric would be produced having spots knit in tuck-stitch.

By arranging long-latch needles in the successive grooves in one half of the circumference of the needle-cylinder and short-latch needles in the other half, and lowering cam c, a tubular web will be produced, one half of which will be knit in tuck-stitch and the other half in plain stitch.

Other patterns may be knit, as is obvious, by a different arrangement of the needles and by a varying operation of knitting-cam 0.

Changes may be made in the form and arrangement of parts constituting our inven tion without departing from the nature or spirit of the improvements. For example, the dial may be provided with needle-operating cams similar to those in the cam-cylinder, and the dial-needles may have long and short latches, so that tuck-work may be produced thereby, the same as by the cylinder-needles, or at the same time or in conjunction therewith.

What we claim as our invention is 1. A needle-cylinder equipped with two sets or series of needles, one set having long latches and the other set having short'latches, combined with a revoluble cam-cylinder provided with a vertically'adjustable knitting- .cam c, a vertical link attached to and extending upward from said cam, a cam-piece for moving said link vertically, and a yarn-feed, all as set forth.

2. A needle-cylinder equipped with two sets or series of needles, one set having long latches and the other set having short latches, combined with a revoluble cam-cylinder having two knitting-cams or sets of cams, one of said cams having a vertical link attached to and extending upward therefrom, a campiece for moving said link vertically, and a yarn-feed, all as set forth.

3. A needle-cylinder and its needles, combined with a revoluble cam-cylinder provided, with a slot, a cam c in said cylinder, a pin extended through said slot and connected with said cam, a link connected with said pin and provided with a slot, a bracket connected with said cam-cylinder, and a slide provided with surfaces 4 5 in different planes and an inclined surface 6, said slide being supported on said bracket and extended through the slot in said link, whereby by moving the slide the link and cam may be raised or lowered, as set forth.

I11 testimony whereof we have signed our names to this specification, in the presence of two subscribing witnesses, this th day of August, A. D. 1888.

ALBERT E. SANBORN. OSCAR L. MERRO'VV.

\Vitnesses:

S. S. JEWETT, S. O. FRYE.