US1780768A - Fabric-tensioning clamp - Google Patents

Description

Nbv. 4, 1930. M I 1,780,768 I FABRIC TENsIoNIue cLgMi? Filed May 11, 1929 Patented Nov. 4, 1930 UNITED STATES PATENT i FF CE i-" ALEXANDER C. PARLINI, OF WOODSIDE, NEW YORK, ASSIGNOB; T0 GOTHAMaSTLK I HOSIERY COMPANY, INC., OF NEW YORK,

rABnIo-Tmvsmivme CLAMP A Application filed. May 11, 1929. Serial No. 362,199; y

This invention relates to fabric tensioning clamps for hosiery knitting machines and has for its object the provision of a simple and efficient clamp attachment for maintaining the leg portion of a full fashioned knitted stocking under tension while the foot portion is being knitted on the so-called footer knitting machine.

In forming full fashioned stockings the leg fabric is usually knit first on what is known as the legger machine. Thereafter the fabric is transferred to the so-called footer machine for knitting the foot portion. In knitting the foot portion onto the leg fabric it is necessary to keep the fabric under a certain tension as the knitting progresses. In the art heretofore practised this was commonly accomplished by the use of a series of hooks fastened into the fabricand exerting a pull so as to tension the fabric while the same was knitted. On account of the sharp hooks engaging the delicate fabric frequent damage occurred in either breaking the threads or injuring the same so that the knit fabric was injured and a defective stocking resulted therefrom.

It is the object of my invention to replace the so-called footer hooks by my improved fabric tensioning clamp, whereby the fabric is engaged under uniform pressure without any injury to the fabric itself. My improved clamp attachment is moreover so constructed so as to be readily applied and the fabric can be quickly adjusted thereon.

A further object of my invention includes the provision of means for eliminating the spreading of stitches in the knitted fabric and in particular in the instep portion of full fashioned hosiery.

Other objects will appear hereinafter and I obtain these objects by the mechanism illustrated in the accompanying drawing in which- Fig. 1 is a plan View of my improved fabric tensioning clamp showing also in broken lines the position of the knitted fabric;

Fig. 2 is an end view of the clamp Fig. 3 is a section taken on the line 3-3 of Fig. 1, and

Fig. 4 is a section taken on the line 14:

a pivot stud 13 '1 ands. A sleeve N. Y., A CORPORATIQN OF DELAWARE of Fig. 1',' ieWe 1 in t emotion Ofthe-ar- I rows. I v 1 Like reference numerals refer to thesame parts wherever'they occur. I

' In a'preferred form of construction my improved fabric tensioning clamp comprises a base plate 10, of suitable dimensions,- provided with tab hooks 11; for engaging the heel tabs on the knitted fabric. The tab hooks are fastened onto the base plate near the extremities thereof by-suit'able *means, such as screws 12. Intermediate of the tab hooks on the base plate, there are-mounted latch studQO suitably spaced, The pivot stud engagesfclamp bar 1 1' by means of apivot pin -15 soas to the clamp bar-to swing freely upon the pivot engages the latchstud 20 as-shoWn inFigs. 16 fits loosely onthe clamp bar 14 and is held on the bar by ears 17 This sleeve carries fastened'thereon an eccentric sleeve; 18 which; is mounted immediately a I permit 15. ,The opposite endof the-clamp-ba'r le above the.fabric holding'plate 21. Plate 21 is fastened to the base plate 10 and the eccentric member and the fabric holding plate constitute the clamping means for holding the fabric. Near one end of the sleeve. 16 there is fastened a hand operated lever 19, whereby sleeve 16 is rotated so as to bring the eccentric clamp 18 to bear upon fabric 25 for holding the same as is shown in Fig. 3.

From the construction of the clamp herein disclosed it will be apparent that the clamping members rigidly and securely engage the fabric to hold the same at desired positions and the clamp is readily engagedor released by the finger lever 19, while the bar engages the latch stud 20. It is further also apparent that plate 21 constitutes one jaw member and the rotatively held eccentric sleeve 18, the other, and that the latter jaw member positively closes upon the former when the sleeve member is rotated as by turning the lever 19.

The fabric is taken up by the usual take u j roll 22, which is properly adjusted and time so as to tension the fabric during the knitting operation. The clamp device is simple in construction, positive in its action and opcrates on the fabric without injury thereto.

, It is obvious to those versed in the art that various minor details of construction will ,siwingably held on one of said studs and en-.

' inj ry the knit fabric suggest themselves and I have illustrated a specific form of my invention; as an example, whereby to successfully operate. inavoiding as outlined above. Having rnow de'seribed my invention what I claim as new and useful and desireto secure 7 p by Letters Patent is:

' 1. 111 a fabric tensioning clamp for focter attachments, a base plate having studs" mounted thereon in spaced relation, a bar swingably held on one of saidst-u-ds-and engaging the other of saidfstuds .at a definite distance from the base plate, an eccentric sleeve on Said bar and means spaced apart 7 from the sleeve to rotate said sleeve about saidan 2. In a fabric tensioning clamp for footer attachments, a base plate having studs mounted thereonin spaced relation, a bar gaging theother of sai-dstuds at a definite v distance from, he base plate, asleeve loosely held on said bar and asecond sleeve eccentri ally fi'xed on said first named sleeve and IneanS Pa ed apart from the sleeve to rotate 7 said sleeves.

f. 3.1,A fabric tensioning clamp for footer attachments, comprising a base-plate, having tab hooks, studs spaced apart on said base i plate, a clamp bar mounted upon oneof said I studs and engaging the other of said studs,

a bar sleeve on said bar, aneccentric sleeve on said-bar sleeve, and" means on said bar sleeveto rotate said bar sleeve on the .bar. I In testimony whereof I have hereuntoset my hand on this 8th day of'May, A. D1929.

Q ALEXANDER GPARLINI.

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