US2810279A

US2810279A - Knitting machine

Info

Publication number: US2810279A
Application number: US338263A
Authority: US
Inventors: Max B Striar
Original assignee: Individual
Current assignee: Individual
Priority date: 1953-02-24
Filing date: 1953-02-24
Publication date: 1957-10-22
Anticipated expiration: 1974-10-22

Description

M. B. STRIAR 2,810,279

KNITTING MACHINE Oct. 22; 1957 Filed Feb. 24, 1953 3 Sheets-Sheet l INVENTOR. M B. STRIAR ATTY.

Oct. 22, 1957 M. B. STRIAR 2,810,279

KNITTING MACHINE Filed Feb. 24, 1953 3-Sheets-Sheet 2 INVENTOR. M. B. STRIAR.

BY I ATT'Y.

Oct. 22,1957

Filed Feb. 24, 1953 M. B. STRIAR 2,810,279

KNITTING MACHINE 3 Sheets-Sheet 5 IN VEN TOR.

M. B. STE/Al? KNITTING MACHINE Max B. Striar, Worcester, Mass.

Application February 24, 1953, Serial No. 338,263

1 Claim. (Cl. 66-125) The object of the present invention is to provide a new and improved location for the bobbins feeding yarns to a knitting machine of any general known type as well as any machine of like nature, and yarn guides for feeding the yarn up past the cams to the needles, rather than down from above, and the reason for providing the new location resides in greater ease of replenishing the bobbins and also to reduce the height of the machine, so that the same may be completely serviced from the floor, avoiding the necessity for step-ladders, etc.

Another object of the invention resides in the provision of new and improved bobbin-holding means for knitting machines and guide means for the threads, said bobbin-holding means being applied either to a rotating cylinder or a fixed cylinder type of machine and including supporting means for said bobbins and new and improved bearing and driving means as well as stop motions, all to the end that the bobbins may be placed within the reach of the operator and not high overhead as is the conventional manner of applying the threads in prior art machines.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Fig. l is a view in elevation, partly in section, showing the invention applied to a fixed cylinder knitting machine;

Fig. 2 is an end view of a detail, looking in the direction of arrow 2 in Fig. 1 and illustrating drive mechanism as well as cloth take-up rolls;

Fig. 3 is a view similar to Fig. 1 but illustrating the invention applied to a rotary cylinder machine; and

Fig. 4 is a plan view with parts in section of the con struction shown in Fig. 1.

In the prior art knitting machines, the only possible place for locating the bobbins has always been at the top of the machine and the yarn is always fed downward, and in ordinary knitting machines, this means that the machine must be thirteen to fifteen feet'high. The present invention overcomes this difliculty by a new and improved bobbin-holding construction, so that substantially the machine need be no higher than the dial or the needles.

As shown in Fig. 1, the machine is provided with a base 10 as is conventional and this base may consist merely of iron legs or any other kind of frame that may be desired. The knitted cloth is deposited within this frame as for instance by means of a pair of slowly operated rollers 12, the nip of which feeds the cloth downwardly.

The cylinder in the machine is indicated generally at 14 and this cylinder is substantially the same as those of the prior art, providing for the needles which are usually located vertically as at 16, and horizontally if so desired in certain types of machines on top of the cylinder at 18. These needles are provided with the usual cams which are well known in the art, and the cylinder, needles and cams are all more or less conventional.

Upon frame 10 there is provided another frame gennimd States Patent ice erally indicated at 20. This frame may be provided with uprights 22 supporting another frame 24 at a right adjacent the location of the needles. The

frame

20, 22, 24 may support driving means such as a pulley 26 although of course the machine may be individually motorized. Pulley 26 is provided with a shaft 28 extending radially inwardly of the machine and driving a gear 38. This gear in turn drives a circumferential flat ring 32 which is supported at its outer edge by frame 24 on a shoulder 34 and a thrust bearing 36 may be provided. This bearing construction extends all about the periphery of ring 32.

An inner support on the fixed cylinder 14 may be provided by another thrust bearing 38 and it will be understood that the ring 32 rotates on the axis of cylinder 14 and carries with it the needle cam generally indicated at 40 and such other mechanism as may be required to the usual operation of a knitting machine.

The pulley 26 may also drive as by means of a chain or the like 42 a lower shaft 44, the lower shaft being provided with a gear 46 driving another ring 48 and appropriately supported by a bearing 50 on frame 20 and such other bearings as may be required as for instance a bearing ring or the like at 52. The

shafts

28 and 44 of course are rotated in unison and drive rings 48 and 32 together about the cylinder. Of course it is clear that rings 48 and 32 may be connected to make them rigid and this is contemplated within the limits of the invention also.

T he ring 48 is provided with bobbin-holders or spindles and there may be as many of these as is required or convenient. In the present case, three different threads are illustrated and these threads are guided in eyes 54 mounted upon a support 56 depending from ring 32. These eyes direct the threads upwardly through passages 58 near the inner circumference of ring 32 and thence through further eyes 60 if needed to the knitting area of the needles.

A pawl 62 may operate a rotary ratchet by means of shaft 44 in order to intermittently operate a reduction gearing 64 for slowly rotating a shaft 66 which drives one of the rolls 12, the other roll 12 being idle if desired.

Referring now to Fig. 3, there is shown a revolving cylinder type of machine wherein the cylinder is indicated at 70. Carried with this cylinder are the cloth take-up rolls 72 which may be driven by means of a gearing 74 from a fixed gear 76 on a fixed frame 78, the latter carrying the bobbin spindles comparable to those shown in Fig. l. The frame 78 is mounted on the knitting machine frame 80 and bearings 82 may be provided for rotatably supporting the rotary cylinder 70.

The rotary cylinder 70 is the same as cylinders of the prior art, and may be supported at its upper end by a thrust bearing 84 and it may have a bearing 83 at its lower end. The cylinder 70 is rotated by a gear 86 driven from a shaft 88 from pulley 90 which is comparable to pulley 26 in Fig. 1.

Guide means are provided at 92 and these may be supported in fixed relation from the fixed frame 94. This frame'is provided with passageways 96 for the threads which ascend to the knitting area generally indicated at 98.

In both forms of the invention, there is provided suitable stop motions which may press spring fingers 100 having thread guides 102 and being held by the threads as at 104 away from a circular rod or bar 106 insulated from the frame of the machine at 108. If a thread breaks, the spring 100 will contact the bar 106 and short-circuit the machine so as to stop the motion. However, if desired, the thread 104 could of course maintain spring fingers 100 into contact with a commutator 3 ring or the like, so that when the thread breaks, the holding finger would move away from the current carrying ring and then merely open the circuit in this fashion.

This invention provides a very convenient bobbin holder, and yarn feed means which are always within reach of the operator, making for faster operation, greatly facilitated threading of the yarn, and a simpler and more inexpensive machine in general.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claim, but what I claim is:

A knitting machine comprising a main frame, a fixed needle cylinder thereon, needles on the cylinder, a fixed ring frame on the main frame and disposed about the cylinder, said ring frame including a pair of vertically spaced annular members with vertical means rigidly connecting the members, each member including an annular track, an annular ring in each track, said rings being revolving'ly mounted on the tracks to annularly travel about the cylinder, means to travel said rings in unison, bobbin spindles on the lower ring, and yarn guides for the bobbin threads on the upper ring, said guides feeding the threads upwardly to the needle, the latter being located Wholly above the bobbin spindles.

References Cited in the file of this patent UNITED STATES PATENTS 265,296 Adgate Oct. 3, 1882 379,819 Salisbury Mar. 20, 1888 810,578 Steber Jan. 23, 1906 2,045,776 Holt June 30, 1936 2,127,179 Lawson et a1. Aug. 16, 1938 2,147,275 Wachsman Feb. 14, 1939 2,231,672 Lombardi Feb. 11, 1941 2,644,625 Hanes et a1, July 7, 1953