US1688791A

US1688791A - Knitting machine

Info

Publication number: US1688791A
Application number: US89656A
Authority: US
Inventors: Owen L Rimel
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-02-20
Filing date: 1926-02-20
Publication date: 1928-10-23
Anticipated expiration: 1945-10-23

Description

O. L. RIMEL KNITTING MACHINE Oct 23, 1928. 1,688,791

Filed Feb. 20, 1926 4 Sheets-Sheet 1 Bryan 20?" Ow a W,

Oct. 23, 1928. 1,688,791

0. L. RIMEL KNITTING MACHINE Filed Feb. 20, 1926 4 Sheets-Skeet .2

Oct. 23, 1928. 1,688,791

0. L. RIMEL KNITTING MACHINE Filed Feb. 20, 1926 4 Sheets-Sheet 3 Oct. 23, 1928. 1,688,791 o. L. RIMEL KNITTING momma Filed Feb. 20, 1926 4 Sheets-Sheet 4 illllllli' mm PIIII frame n30?" MAM,

Patented Get. 23, 1928.

UNITED STATES OWEN L. RIMEL, OF HARRISBURG, PENNSYLVANIA.

KNITTING IIIACHINE.

Application filed February This invention provides a reversible plating attachment for circular-knitting machines for manufacture of figured hosiery, and it is adapted for use on machines for production of hosiery having seamless leg portions.

The attachment pertains to control of the yarn supplied to the needles, and it so is arranged that at proper and predetermined times yarn-shifting and tension instrumeir talities automatically are operated by a controllingpart of the machineas the patternchain, for example-to alter the supply of yarn of different colors or other character istics.

More particularly, the attachment operates to shift yarn fingers and alter yarn ten sion, whereby yarn of one characteristic periodically is caused to be knitted differentlywith respect to other yarn entering into the product, as, for example, when a colored yarn and a white yarn are thrown into or out of position with respect to the needles and knitted on the outside or inside of the fabric.

Vvhen considered with the description herein, the characteristics of the invention are apparent from the accompanying drawings, forming part hereof, wherein an embodiment of the invention is disclosed, for purposes of illustration.

Although the disclosures herein exemplify what now is considered to be a preferable embodiment of the invention, it is to be understood that it is not the intention to be limited necessarily thereto in interpretation of the claims, as modifications and adaptations within the limits of the claims can be made without departing from the nature of the invention.

Like reference-characters refer to corresponding parts in the views of the drawings, of which Fig. 1 is a front elevation of a knittingmachine having the attachment associated therewith, such parts of the machine as do not relate directly to the functioning of' Fig. i is a front elevation of the attachment Fig. 5 is a side elevation thereof;

20, 19:26. Serial No. 89,656.

Fig. 6 is a View of the other side thereof.

Haymg more particular reference to the drawings, A designates a part at thetop of the machine above the needles thereof, to which a supporting or base element of the attachment is secured by fasteners 8. This element includes an upright metallic plate I 9, haying an opening 10 in its lower portion, and 1t 1s formed integrally at its top with a rearwardlyextending arm 11 and a forwardly-extending arm 12. The frame also includes a substantially U-shaped partcom prising rearwardly-extending arms 13 seoured to the rear side of the plate below the arm 11.

By means of a screw-or other suitable fastener Ll a transverse substantially horizontal shaft 15 is secured intermediately of its ends to the arm 12 at or near its free end. The shaft has an abutment 16 on each side of the arm 12 and threaded end'portions 17. A pair of yarn-tension members 18 of disk form, each having a notch 19 in its peripln ery, is held against each of the abutments 16 by a spring 20 on the shaft, which is interposed'between the members 18 andnuts 21 on the threaded portions of the shaft A standard 22 is secured in any suitable manner to the upper side of the arm 12, as by the fastener 14, which holds the shaft 15. The standard has at its upper end a integrally-formed transverse part 28, which carries guides 24 arranged to direct yarn between the pairs of disks 18. A rod or the like 25, secured to the standard at or near its base, extends laterally therefrom and seats in the notches '19 of the disks, whereby the latter are prevented from turning under the influence of yarn passing therebetween. If desired, the standard may be made of bendable sheet metal, so that'the positions of the guides with respect to the disks may be adjusted.

A rock-shaft 26 is journa'led in and carried by the frame members '13. By means of a set-screw 2'? a collar 28 adjustably is secured to the shaft- 26. An arm 29, which may be of stout wire, is mounted on and extends forwardly from the collar to a place from the collar 32 to a place below the other pair of disks 18, and it has a pointed end portion 34 arranged to be moved between and thus separate the disks of that pair. The

arms

29 and 33 relatively are arranged in such manner that, when the end of one of them between the disks of its pair, the other is free of its pair, and on rocking of the shaft. 26 one arm is moved between its disks and the yarn therebetween thus relieved of tension thereof and the other arm is released from its disks and permits them to apply tension to itsyarn.

The shaft 26 carries, and has secured thereto by a set-screw 35, a collar 36, which has a depending arm 37; and it also carries, and has secured thereto by a set-screw 38, a collar 39, which includes a cam or other eccentric part 40. The cam acts against an arm 41 swingably depending from the rearwardly-entending arm 11 of the frame. The

arms

37 and 41 bear against ends of

yarnfingers

42 and 43, respectively, which are held against the arms by springs 44, and which extend into the machine to places to control the positions of yarn passing theret-hrough to the needles. Yarn passing between the pair of tension-disks controlled by the arm 29 passes through the yarnfinger 42 controlled by the arm 37, and yarn passing between the other pair of tension disks controlled by the arm passes through the yarn-finger 43 controlled by arm 41.

The movable elements of the attachment so are coordinated that, when the

tensioncontrol arms

29 and 33 are engaged with and disengaged from their respective tension-disks, the dependingarm 37 is retracted and permits the yarn-finger 42 to be in retracted position, and the cam 40 holds the arm 41 and the yarnfinger 43 in forward position,'as shownby Fig. 6. W'hen the shaft 26 is rocked in the proper direction,-

the arm 37 moves the yarn-iinger 42 forwardly, the arm 29 is released from the tensiolrdisks between which yarn passes to that finger, the cam 40 turns and permits the arm 41 and the yarn-linger 43 to retract under the influence of a spring 44, and arm 33 moves between the other pair of disks and releases or decreases tension thereof on the yarn passing to the finger that then is in retracted position. As a result, the yarn passing through the forwardly-moved finger 42 is caused to be cast in front of the yarn passing through the retracted finger; and a change in the pattern of the fabric being produced is effected, as, for example, when yarns of different colors are supplied through the fingers. \Vhen the shaft 26 is rocked in the reverse direction, the movable elements of the attachment return to the positions from which moved during the action just described.

The shaft 26 may be rocked, in any suitable manner, in consonance with the functioning of other parts of the machine, to change periodically the pattern of the fabric being produced. For example, that shaft may have a crank 45, to which is connected a spring 46. That spring holds the crank in Contact with a substantially horizontal end portion 47 of vertically-movable rod 48, which extends downwardly through the head B of the machine. Normally the rod 48 is in such position that the movable elements of the attachment are maintained in the positions shown by Fig. 4-that is, in the positions from which the movements heretofore described are made and to which they are returned by the effort of the spring 46. r

The lower end of the rod 48 is connected to an end of a bell-crank lever 49 pivoted at 50 to a frame member C of the machine. The other end of the lever is connected by a link 51 with an arm 52 of a shaft 53 journaled in a frame member of the machine. That shaft has extending therefrom a lug 54 positioned adjacent to the path of travel ofthe patterlrchain D and arranged to be swung by movement of certain lugs 55 on the chain for that purpose. I 7

These lugs are spaced on the chain in suchpositions as to cause shifting of the movable elements of the attachment at the desired intervals and at the proper times with reference to the operation of the other pattern-controlling, actuating, and other instrumentalities of the machine. then and While one of these pattern-chain lugs moves and holds the lug 54 from its normal position, the rod 48 is raised and the movable elements of the attachment are actuated from their normal positions as hereinbefore explained. When a chain-lug passes from contact with the lug 54, the rod 48 and its actuating parts return to their normal positi ons under the influence of its weight and of the spring 46 and the movable elements of the attachment and the yarn-fingers return to their normal positions under the influence of that spring and of one of the springs 44.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is- 7 1. In a knitting-machine, the combination, with reversibly-shiftable fingers controlling the position of yarn passing to the needles, of mechanism for shifting said fingers, whereby reverse plating is effected, comprising a rock-shaft, an arm and eccentric part on said shaft, a pivotallyrnounted member swingable by said eccentric part, springs holding said fingers against said arm and member, means controlled by said shaft whereby tension on yarn is altered simultaneously with the shifting of said fingers, and means whereby said shaft is rocked.

2. In a knitting-machine, the combination,

With reversibly-shiftable fingers controlling the position of yarn passing to the needles, of mechanism for simultaneously shifting said fingers and altering tension on yarn passing thereto, whereby reverse plating is effected, comprising a tension device for yarn passing to each of said fingers, a rock-shaft, an arm and eccentric part on said shaft, a pivotally-n'iounted member swingable by said eccentric part, springs holding said fingers against said arm and member, arms on said. shaft arranged to alter tension of said tension devices on yarn passing to said fingers, and means whereby said shaft is rocked.

8. An attachment, for knitting-machines for the simultaneous and reverse shifting of fingers controlling the position of yarn pass ing to the needles and alteration of tension on that yarn whereby reverse plating is ef fected, comprising yarn-tension devices, a rock-shaft, a finger-shifting arm and an eccentric part on said shaft, a finger-shifting arm sWinga-ble by said eccentric part, and arms on said shaft cooperable With said ten sion devices to alter tension thereof on yarn passing to the fingers,

In testimony whereof I afiix my signature.

OWEN L. RIMEL.