US647881A - Knitting-machine. - Google Patents

Description

No. 647,88I. Patented Apr. I7. |900. R. W. SCOTT H. SWINGLEHURST, 1R. KNITTING MACHINE.

(Application led July 9, 1898.) (No Model.) 2 Sheets-Sheet I.

No. 647,8al. vPanama Apr. I7', |900. n. w. scoTT c. H. swmGLEHunsT, 1n. KNITTING MACHINE.

(Application led July 9, 1898.)

2 Sheets-Sheet 2` NITED STATES PATENT EEICE.

KROBERT w. SCOTT AND iAIAEEY SwINCLEHUEST, JE., OE PHILADELPHIA, PENNSYLVANIA, ASSIGNOES TOSAID SCOTT, OE SAME PLACE, AND LOUIS N. I). wILLIAMS,- OE ASIIBOUENE, PENNSYLVANIA;

kNlTTlNe-MACHINE.

SI'PECIFICATION forming part of Letters Patent No. 647,881, dated April 1'7, 1906. Application led July 9, 1898. Serial No. 685,490. (No model.)

To all whom it may concern: V Be it known that we, ROBERT W. SCOTT and HARRY SWINGLEHURST, Jr., citizens of the United States, and residents of Philadelphia, Pennsylvania, have invented certain Improvements in Knitting-Machines, of which the following is a specification.

The object of our invention is 'to construct a machine for producing ribbed knitted fab- 1o ric having one or more vertical stripes therein, each composed of an independent yarn forming a chain ofn stitches interlocked with the stitches of the knitted fabric, and this object we attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in which* Figure 1 is a plan or top view, partly in Section, of sufficient of a rib-knitting machine to illustrate our invention. Fig. 2 is a side zo view of the same. Fig. 3 is a view showing in a fiat plane the cams carried by the camcylinder of the machine. Fig. 4E is a transverse section on the line a: fr, Fig. 3. Figs. 5, 6, and 7 are diagrams illustrating the opera- 2 5 tion of the machine, and Fig. 8 is a sectional view illustrating aspecial construction of machine in accordancewith our invention.

Our invention is in the nature of an attachment to an ordinary circnlarrib-knitting ma- 3o chine, and in the .drawings we have shown only so much of such a machine as is necessary toillustrate the application of our attachment thereto, 1 representing the fixed needle-cylinder of the machine; 2, the iixed dial; 3, the

3 5 rotating cam-box, and 4L the rotating dial camplate, all of which may be constructed and driven in the usual manner. The rotating cam boX, however, has, in addition to the usual lift-cam 5 and draw-down cam 6, a sup- 4o plementary lift-cam 7, extending above the top of the draw-down cam 6, and a supplementary draw-down cam 8 for engaging with and depressing the bits of the needles raised by said supplementary lift-cam 7, and those needles of the cylinder` 1, upon which the in dependent striping-stitches are to be formed, have elongated butts 9, which project radially beyond the lift-cam 5 and are .engaged by the supplementary lift-cam 7, as Shown in Fig. ,4, so as to be directed over the top of the draw-down cam 6, thereby permitting these needles to remain elevated until they are drawn down by the higher supplementary draw-down cam 8, the shorter bits of the remaining needles being actuated by the cams 5 and 6 in the usual manner.

Mounted upon suitable studs 10 on the outside of the needle-cylinder 1 are as many le vers 11 as there are long-bitted needles in the cylinder, and each of these levers has at its upper end a yarn-guiding tube or eye 12, which is adapted to play across the path of one of the long-bitted needles. The yarn for each lever 1l is drawn from a bobbin suitably located and passes up through the interior of the needle-cylinder 1 and out through an opening 14 in said cylinder, thence through an eye 13 on the lever 1l, and thence to the guide eye or tube 12 of said lever, this method of feeding-the yarn to the guide-levers 11 being necessitated by the presence on the rotary cam-cylinder of the upright posts l5, which support the arch for carrying the spindle of the rotating dial cam-plate.

The yarn-guide levers 11 are operated successively by a cam 16, mounted upon the top of the rotating cam-box 3, adjacent to the supplementary draw-down cam 8, this cam having the contour shown in Fig. 3--that is to say, alifting-incline 17, a preliminary drop 18, a dwell 19, and a final drop 20.

Each of the levers 1l is acted upon by a spring 21, whereby it is normally held in contact with a stop 22 on the stud 10, and each lever normally occupies the position shown in Fig. 5; but when the lower arm of the lever comes into Contact with the lifting portion 17 of the cam 16 said lever is moved to the position shown in Fig. 6 and then is permitted to drop to the position shown in Fig.

.7 by reason of the preliminary depression 18,

remaining in this position while traversing the dwell 19 of the cam and finally being permitted to drop again to the position shown in Fig. 5 by reason of the second depression 20 ofthe cam.

Each of the striping-needles is raised to its .highest position, as shown in Fig. 5, by the l cam 7l as `it approaches the knitting -yarn` 2` f y f y 647,238'1 by the cam 16, so as to carry its yarn across the face of the needle, as shown in Fig. 6, and as soon as the latch rises and confines the striping-yarn the eye .12 moves backward;

slightly, as shown in Fig. 7, so as to slacken the striping-yarn and permit it to be drawnV down to form a new stitch, the former stitch-` of striping -yarn and the loop of knittingf yarnbeing simultaneously cast o ofthe needle as the latter reaches its lowest position, the yarn-guiding'eye 12 thenresuming vits normal or original position, as shown in Fig.

5, preparatory to a repetition of the operation l on the next rotation ofthe machine.

for the knitting-yarn; but it will be manifest that it can be applied to multiple-feed machines as well, there being one cam 16 fory 'each set of needle-operating cams when it is desired to insure the formation of astitch of the striping-yarn for each course of knitted .fa-bric.

Our invention can also, it will be evident,

be applied to plain-knitting machines withproducing` ou-t dial-needles and intended for ordinary single-knitted fabric. y

Some or each of the striping-yarn guides may, if desired, operate in conjunction with a pair of adjoining striping-needles instead*` of with a single needle, where a wider stripe is to be produced than that resulting fromv a single row of stitches.

In `order that the dial-needles may work'` closely to the top of the needle-cylinder Without interference by the striping-yarn Aguides E 12, the top of the needle-cylinder is notched or` recessed, as shown at 24., in order to re-l ceive each of said guides 12 when the latter is in the depressed position shown in Fig. 5j.

When it is desired to employ a large number of striping-yarn guides, we Iprefer to adopt the construction shown in Fig. 8, in

.which 25 represents a ring secured exter The same means may be employed for operf Vating-these guides as wehave described for operating the lever-guides-that istosay,` a.

cam for lifting them and springs for depressing them. j y I kHaving thus described our invention, We

We have shown our invention in -connec-i vtion with a machine having but a single feed claim and desire to secure by Letters Fatentf Y l 1. The combination in a knitting-machine having a needle-cylinder with two characters of needles, cams for imparting knitting movement to one character of needles, and other vcams for projecting the other character of needles to a greater extent than the first, with a striping-yarn guide and provision for operatingthe same whereby its yarn will be applied to said projected needle or needles, and striping-stitches will be formed solely upon the latter and interlocked with the knitted fabric.

2. The combination ina rib-knitting machine, of a Vneedle-cylinder and its needles, a

-dial and its needles, one or more knittingyarn guides, cams -for operating the cylinder and dial needles kso as to cause them Vto knit, cams forselectinga certain needle or adjoining needles, a striping-yarn guide and means for operating the same whereby it-s yarn will be applied to said selected needle or needles soas to form stitches solely upon the latter.

3. The combination in a knitting-machine, of a needle-cylinder having two characters of needles, a knitting-yarn guide, cams for actuating one-character of needles so as to cause them to knit, means for impartingspecial movement to the'other character of needles, a striping-yarn guide adapted to feed yarn to said selected needle or needles, and a cam for operating said striping-yarn guide, said'cam being constructed to impart tothe guide first a rising movement and then a two-stage return movement with a dwell between the two stages of such return movement.

4. The combination ina rib-knitting Vmachine, of a needle-cylinder and its needles, a dial and its needles, .one or more knittingyarn guides,\cams for operating the needles of the cylinder and dial so as to cause them to knit, means for selecting a certain needle or adjoining needles tofreceive a stripingyarn, astriping--yarn-guide, and provision for feeding yarn to said striping-yarn guide from the inside of the needle-cylinder.

5. The combination ina rib-knitting machine, of a needle-cylinder having needles one vorrnore of which have longer bits than -the others, a knitting-yarn guide, acam-box vhaving lift and draw-down cams for acting upon the short-bitted needles, and other lift and draw-down cams for acting upon the longer-bitted needle or needles lso as to-raise the latter toa higher point than the other yarn guide.

6. The combination in a rib-knitting machine, of a needle-cylinder having a notched or recessed upper portion, needles in said cylinder, a dial and its needles, one or more knitting-thread-guide cams for operating the IOO eissi needles of the cylinder and dial so as to cause them to knit, means for imparting special movement to a certain needle or needles, a striping-yarn guide normally occupying a position in a notch or recess of the needlecylinder, and means for operating said yarnguide so as to canse it to apply its yarn to the selected needle o11 needles.

In testimony whereof We have signed our names to this specification in the presence of 1o Jnwo subscribing Witnesses.

ROBERT W. SCOTT. v HARRY SWINGLEHURST, JR. v Vinnesses:

WM. BUCKLEY, STooKToN BATES. A

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