US1727784A - Binder for textile machinery - Google Patents

Description

Sept. 10, 1929. PULJSTER V 1,727,784 7 BINDER FOR TEXTILE MACHINERY Filed Feb. 28, 1928 Inventor jferzg/falstelt Patented Sept. 10, 1929.

HENRY IULSTER, or PHILADELPHIA, ?E1\TNSYLVANIA.

BINDER non TEXTILE MACHINERY;

Application filed February 28, 1928'. Serial no. 257,628.

The object of the invention is to provide improvements in certain details of the construction and operation of textile machinery, and more articularly in a type of machine used to knit tubular articles of various types.

In circular knitting machines, especially when several yarns of different size, color, or material, are being used, the threads which are severed and not actually being worked at 10 a given moment are constantly in danger of slipping, and in fact often do slip, free from the single binder heretofore employed and comprising metal against metal, with the result that-each machinerequires constant tending, so-called press-cits and drop stitches frequently occurring, with the result that the tubular product when completed can only be used in a finished article of second quality, or must be rejected altogether. I

The object of the inventiontherefore is to provide an improvement in the mechanism that holds the ends of the severed threads, and through which the threads of various sizes, colors, or materials, are supplied to the i needles. Also, instead of merely the single sprii'ig-pressed liftable" binder heretofore employed indirect contact with a metal surface or platen (except as shown in copending application Ser. No. 249,224), a plurality of resilient auxiliary fingers are used, these latter being in constant engagement with the'surface over which the threads pass, and at all times cooperating with" each other and the littable binder, to positively prevent the escape of a single thread at any time from a position accessible toth'e' needles; v

A further object is to rovide means for retaining the cushion" o1 platen and protecting the edges of same in such manner that threads cannot enter beneath and loosen a corner or edge portion and start the'eventual separationof the platen" from its support. l n addition tosupporting the platen upon the platform and surrounded by a heading or the like to protect its edges, the same' or an' additional platen may be operatively supported and gripped insuch manner by the lir'table binder as to producesubstantially the same desirable result, in which latter case the platform is preferably provided with one or more ridges or corrugations which impinge against and create corresponding recesses in the surface of the platemand thus increase the frictional contact of the binder with the platform and decrease the possibility of threads of yarn slipping therethrough 0r laterally therefrom. h i In this present invention there isfa'lso provided a more positive connection than heretofore between the actuating lever and the liftable binder, eliminating springs andsuch less positive elements, and substitiitingtherefor a series of link motions, one of which positively actuates the lift-able binder and secures it in operative positiomfiintil such v another link motion releases and lifts said binder to permit the free passage of threads therebeneath.

With these and other objects mind, the c present inv ntion comprises further details of construction and' operation which are fully brought out in the followingdescription when read in conjunction with thdaccompanying drawings in which Fig. l is a front elevation of one embodiment of the invention; Fig. 2 is a topplan viewof the same; F i'g. 3 is are'ar elevation of the same ,Fig. 4 is a vertical sec- 'tion on the line Mot Fig'. 3'; and Fig. 5

is a fragmentary section showing ainodified method of supporting the'binder platen.

Referring to thedra ings, the improved attaohmen'tconiprises primarily a platform 1 from which rises upoi'i one side a flange 2, having a restricted upwardly extending portion 3, which in turn comprises a bracketextension 4:, provided with elongated apertures 5 for adjus'tably securing the dev'ice to a textile machine. To an upwardly extending lug 5 carried by the brackets there is pivoti ally secured a lever comprising an elongated arm 6 extendin'gin one directionand a prererably curved arm-'7 extending'genera'lly in the opposite direction and having a hooked terminal portion 8" adapted to befen'g'aged b a connectingrod (not shown) which extends downwardly and efiects an operative connection with suitable portions of the textile niachinenpon which the attachment is mounted. The flange 2 terminates forwardly in spaced relation with the adjacent edgeportime as 3 platform 1 secured thereto by means of a set screw or the tion 1 of the platform, a rectilinear edge 9 of said platform comprising a cutting edge against which is adapted to oscillate a shearing knife 10, pivotally mounted at 11 upon the flange 2, and having an oppositely extending lever projection 12 which is connected through a link 13 with the elongated end portion 6 of the operating lever 6-7 Said link is in turn provided with a laterally extending off-set or arm 14 which may be integral therewith or may be removably and adjustably secured thereto by means of a bolt or other suitable means 15.

To the radially inner surface of the upwardly extending portion 3 there is pivotally secured a liftable binder having a head 16, extending in one direction and in the other direction comprising an extension 17 which is adapted to be directly engaged by the link arm or off-set 14 when the operating lever 6-7 moves in one direction to raise the binder 16 from cooperation with the upper surface of the platform 1.

Also mounted pivotally upon the projection 3 is a lever comprising anarm 18 normally in the path of and adapted to be encountered and moved by the arm or off-set 14, and a second arm 19 which extends angularly into proximity and is adapted to cooperate with the upper surface of the binder 16.

From the platform 1 there also extends upwardly a lug 20.which adjustably supports a freely extending guide 21, adapted to operate to guide threads beneath a pair of resilient binders 22 which are at all times in yielding cooperation with the surface of the and are adjustably and removably like 23.

The under surface of, the binder 16 is preferably bifurcated longitudinally so as to provide a plurality of substantially parallel depending ridges24 which cooperate with and form depressions or corrugations in the upper surface of a platen 25, of yielding material such as leather or the like, closely adj acent to the cutting or shearing edge 9 of said platform and between said cutting edge and the position of the resilient binders 22.

On the other'hand, referring to Fig. 5, a binder 16 may be provided with more widely spaced flanges 24, between which is secured a platen 26 of leather or the like, into the under surface of which grooves or corrugations 27 are formed by cooperation with upwardly extending corrugations or ridges 28 upon the upper surface of the platform 1, whether said last-named corrugations form integral extensions of said platform or are parts of a separate plate 29which may be secured to said platform in any desiredmanner.

In the operation'of this device, theparts thereof shownin Fig. 1 are in, what will be referred to as',a raised position,the binder 16 being raised freely from the platform 1 and the shearing knife 10 raised above the cutting or shearing surface 9 of the platform. As an operating rod connected with the hooked end 8 of the actuating lever 6-7 moves downwardly, said lever is moved about its pivotal support in such manner as to raise the link 13 and arm or ofiset 14 until it encounters the lever arm 18, causing the oppositely and downwardly extending lever arm 19 to press the binder 16 into binding cooperation with said "platform, the shearing knife 10 simultaneously moving downwardly through connection with the link 13 and cutting or shearing the yarn in a well-known manner.

When the actuating lever 6-7 is moved again into the position shown in Fig. 1, the

link 13 causes its arm or off-set 14 to move downwardly and to press against thebinder extension 17, raising the binder 16 free from engagement with the platform and separating the shearing knife 10 from the cutting edge 9, thus raising the lever arm 19 so as to reset it and the lever arm connected thereto, for repeating the opposite movement of thedevice as before described Although the ent of the United States is 1. An attachment for textile machines, comprislng a platform, a binder pivotally carried thereby and extending upon opposite sides from its pivotal support, an actuating lever upon being moved in one direction cooperating with one end portion of said binder torelease the same, and when moved in the opposite direction cooperating with the opposite end portion of said binder to close the same.

2. An attachment for textile machines, comprising a platform, a binder pivotally carried thereby and extending in opposite directions from its pivotal support, an actuating lever, a link connected to said lever and having an ofiset adapted to engage and shift one end of said binder when moving in one direction, and a second lever pivotally mounted and extending between said offset and the opposite end portion of said binder, whereby movement of said actuating lever in the operation causes said offset to engage said lastmentio-ned lever and thereby cause said bindver to move in the opposite direction.

opposite directions from its pivotal support, said olfset cooperating with one end portion of said binder to move it in one direction simultaneously With the movement of said knife, and a second lever also pivotally supported by said platform and operative to connect said offset with the opposite end portion of said binder to move the latter in the opposite direction With a corresponding movement of said first lever and said knife.

In testimony whereof I have aifixed my signature.

HENRY PULSTER.

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