US577788A

US577788A - Rib-knitting machine

Info

Publication number: US577788A
Authority: US
Publication date: 1897-02-23
Anticipated expiration: 1914-02-23

Description

(No Model.) 2 Sheets-Sheet 2.

R. W. SCTT. RIB KNITI'ING MAGHINE. N0. 577,788. Patentd Feb'. 23, 1897.

l "ii NTTED STATES PATENT OFFICE.

ROBERT W. SCOTT, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO LOUIS N. D. WILLIAMS, OF ASHBOURN'E, PENNSYLVANIA.

RIB-KNITTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 577,788, dated February 23, 189'?. Application filed May 7, 1896. Serial No. 590,573. `(No model.)

To all whom it may concern:

Be it known that I, ROBERT W. SCOTT, Aa citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Bib-Knitting Machines, of

which the following is a specification.

The object of my invention is to provide a rib-knitting machine with means whereby a facing or lining weft or wefts may be com- 1o bined with the ribbed fabric, and this object I attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in which- Figure 1 is a vertical section, partly in elevation, of sufficient of a circular rib-knitting machine to illustrate the application of myinvention thereto. Fig. 2 is a plan viewof a presser-wheel forming one of the elements of the machine. 3 is a view similar to Fig. l, but illustrating another embodiment of my invention; and Fig. 4L is a sectional diagram illustrating still another form of machine within the scope of the invention.

A represents part of the fixed circular bed z5 of the machine, and B part of the vertical needle-cylinder secured to said bed and having the usual grooves for the vertical guidance of the needles a, which are vertically reciprocated in the ordinary manner by means of cams carried by the cam-cylinder D, the latter being rotated from the driving-shaft of the machine by means of the usual gearing.

Part of the circular-dial cam-plate is shown at F, said plate being carried by the central 3 5 spindle F', and the latter being supposed to be connected with the cam-cylinder D in the usual manner, so as to rotate therewith.

An annular needle-dial G is mounted upon brackets b on the under side of the dial camplate F and has radial grooves for the reception and guidance of the dial-n eedles d, which are operated by cams on the under side of the dial cam-plate F in the ordinary manner, any of the usual means being employed for locking the annular dial G to the vertical needlecylinder B, so as to prevent rotation of said dial with the cam-plate F.

In the operation of the machine it is necessary to depress alternate needles a or groups 5o of such needles, and while various means may be used for this purpose within the scope of my invention the means which I prefer to use are those shown in Figs. l and 2, and which I will now describe.

Mounted upon and rotating with the camcylinder D is a post f, upon which is mounted, so as to turn freely, a presser-wheel I, having formed in its periphery alternate deep and shallow notches, this presser-wheel occupying such relation to the needles a of the cylinder 6o B that as the cam-cylinder D is rotated the notched periphery of said presser-Wheel will engage with the needles a, and those needles which Aengage with the shallow notches will be pressed inward, as shown in Fig. l, so as to provide for the introduction of a weftthread into the hooks of the needles thus pressed inward, said weft-thread lying behind the stitches carried by the needles not so pressed and under the stitches of the dial- 7o needles.

For the purpose of properly laying in this weft-thread I mount upon one of the brackets b a guide plate or finger h, having .at its outer end a suitable eye for the guidance of the weft, this finger being by preference lo- `cated immediately in advance of the cams which impart the reciprocating or knitting movement to the needles of the cylinder and dial, so that the weft-thread will be fed to the 8o depressed needles a just before the latter rise to receive the knitting-thread from the guide The guide h may receive its weft-thread from a bobbin J, mounted upon a frame J', 85 secured to the lower end of the spindle F', so as to rotate with the cam-cylinderD and camplate F, or it may receive thread through a slot K or equivalent opening in the dial camplate F, the thread in this case being derived go from a bobbin located above said cam-plate. By this means the i'leecing weft will be laid on the inside of the fabric and will pass over the wales of the inner face, namely, those l formed by the stitches drawn by the dial-needles, but will be caught by the knittingthread where the latter passes from wales of the inner face to wales of the outer face, as set forth in an application for patent filed by me on the 4th day of May, 1896, Serial No. loo 590,130.

When the machine is constructed as shown in the drawings, the weft will be tied in only at every other wale of the outer face of the fabric and Will lioat over pairs of wales of the inner face, but by depressing all of the needles of the cylinder the weft may be tied in at every wale of the outer face and may be carried around each separate wale of-the inner face, and the extent of the ties and iioats may be regulated as desired by varying the number and relation of the depressed needles of the cylinder.

The number of needles may be so proportioned in respect to the number of notches in the presser-wheel I that the needles which are not pressed in forming one course will be pressed inward in forming the next course, the needles which were pressed inward in forming the first course being relieved from pressure in forming the next course, so that in one course the weft will be tied at certain wales of the fabric, while in the next course it will be tied at alternate wales, and so on throughout, so as to provide for better disposal of the weft-loops on the face of the fabric than could be effected if said wefts were tied at the same wales of the fabric on each course. The same result may be attained in a two-feed machine by having at one feedingpoint a presser adapted to depress certain needles, and at the other feeding-point a presser adapted to depress the other needles.

While I prefer in all cases to press the needles' of the cylinder B, my invention in its broadest form covers also the pressing of the needles of the dial, and in Fig. 3 Ihave shown a machine in which this method of operation is adopted, the weft-thread guide h in this case occupying a position close to the inner face of the cylinder B, so as to lay its weftthread outside of the knitted web, but inside of the cylinder-needles and alternately above and below the dial-needles, which are acted upon by a presser-wheel I.

My invention is applicable to straight machines as well as to circular machines. Hence in some of the claims I have used the term needle-carrier7 as applicable either to the cylinder or dial or to a straight needle-bed.

The needle-carriers may be at any desired angle in respect to each other ormay even be parallel or in line with each other, an instance of the latter construction being shown in Fig. 4.

Having thus described my invention, I claim and desire to secure by Letters Patentl. The combination in a rib-knitting machine, of the needle-carriers, the needles, cams for operating said needles, a knitting-thread guide, means for separating the needles of one of the carriers for the application of a weftthread, and provision for applying su ch weftthread from the inner side of the machine.

2. The combination in a rib-knitting machine, of a needle-cylinder, a needle-dial, the needles, a cam-cylinder, a dial cam-plate, a knitting-thread guide, means for separating the needles of one of the needle-carriers for the application of a weft-thread, and provision for applying said weft-thread from the inner side of the machine.

3. The combination in a rib-knitting machine, of the needle-cylinder, the cam-cylinder, the dial, the dial cam-plate, the needles and the knitting-thread guide, with means for separating certain of the needles of the cylinder for the application of a weft-thread, and provision for applying said weft-thread from the inner side of the machine.

4. The combination of the needle-cylinder, the dial, the needles, the cam-cylinder, the dial cam-plate and the knitting-thread guide of a rib-knitting machine, with means for separating certain of the needles of one of the needle-carriers for the application of a weftthread, provision for feeding said weft-thread from the innerside of the machine, and a bobbin mounted on the inner side of the machine for supplying said thread-feeder.

5. The combination of the needle-cylinder and annular needle-dial, the knitting-thread guide, a cam-cylinder and a dial cam-plate provided with means by which said annular needle-dial is supported, with means for separating certain of the needles of one of the needle-carriers for the application of a weftthread, and provision for applying said weftthread from the inner side of the machine.

6. The combination in a rib-knitting machine, of needle-carriers, theirneedles, cams for operating said needles, one or more knitting-thread guides, one or more rotatable pressers for laterally separating the needles of one of the needle-carriers for the application of a weft-thread, and provision for applying said weft-thread from the inner side of the machine.

7.' The combination in a rib-knitting machine, of needle-carriers, their needles, cams for operating said needles, one or more knitting-thread guides, one or more rotatable pressers for laterally separating the needles of one of the needle-carriers for the application of a weft-thread, and provision for applying said weft-thread from the inner side of the machine, said presser or pressers being constructed as described, whereby the `needles depressed in some courses are different from those depressed in the other courses.

8. The combination in a rib-knitting machine, of two needle-carriers each provided with needles, a knitting-thread guide, cams for operating the needles so as to cause them to form stitches, and a weft-thread guide located on the inner side of the machine whereby it is adapted to feed weft-thread to the inner side of the fabric which is being produced by the needles.

9. The combination in a rib-knitting machine, of a needle-cylinder and its needles, a supplementary needle-carrier having needles adapted to cooperate with those of the needle-cylinder to produce a ribbed web, camcarriers having cams for operating the nee- IIO dles of the needle-Cylinderand supplementary needle-dial, and provision for introducing a needle-carrier, and a mounting for said snpi thread on the inside of said annular needleplementary needle-carrier affording providial. sion for the introduction of a thread on the In testimony whereof I have signed my 5 inside of the latter. naine to this speoieation in the presence of 15 10. The combination in a rib-knitting Inatwo subscribing` Witnesses. chine, of a needle-cylinder and its needles, an ROBERT WV. SCOTT. annular needle-dial and its needles, a eam- Vitnesses: cylinder and its earns, a dial Cam-p1ate and J 0S. H. KLEIN, Io its Gains, means for supporting the annular F. E. BECHTOLD.