US1710656A - Yarn-doubling frame - Google Patents

Description

April 23, 1929. c nw c 1,710,656

YARN DOUBLI NG FRAME Filed Aug. 192 2 Sheets-Sheet 2 [2: var; for:-

M By His [ll/annex:

Patented Apr. 23, 1929.

UNITED STATES 1,710,656 PATENT OFFICE.

FLETCHER CHADWICK, OF HEBDEN BRIDGE, ENGLAND, ASSIGNOB T COEDS LIMITED, 01 HEBDEN BRIDGE, ENGLAND, A BRITISH LIMITED LIABILITY COMPANY.

YARN-DOUBLING FRAME.

Application filed August 8, 1927, Serial No. 211,565, and in Great Britain February 12, 1927.

It has long been known to double yarns directly from a yarn beam in a yarn doubling frame, the beam being rotated by drums or by the drawing rollers of the frame drawing the yarns from the beam to give the necessary feed of yarn. The beam has however so far as 1 am aware always been mounted longitudinally of the frame and this in a long doubling frame necessitates the drawing of the yarns vertically or approximately so from the beam, tlnwnigh'guides placed adjacent to the said beam, the yarns being thence distributml to the yarn guides behind the respective drawing roller stands, and through the roller nips to the doubling spindles. It is a desideratum -for the avoidance of abrasion of the yarn and to preserve its elasticity, that the yarn should be subjected to as few angles or bends as possible but drawing of the yarn ends verticallyfrom the beam and thence distributing them to the spindles makes a sharp angle in each end of yarn unavoidable before such distribution commences.

It the object of the present invention to provide a simple method of doubling yarns from the beam in a doubling frame without the use of guides for the yarn except those guides which are situated behind the rollers which feed the yarns to the doubling spindles, and according to the invention l mount a bean'l either vertically or horizontally and with its longitudinal axis at right angles to the length of the doubling frame and by means of the usual rollers draw the yarns from the beam direct to the spindles, each tape of yarn thus taking the shortest and straightest path possible from the beam to the usual thread guide behind the spindle drawing rollers. The beam axis being thus perpendicular to the length of the frame or to a line which is parallel to the said length, straight lines may be drawn from the beam surface to spindles on each half of the frame, and to the spindles on both sides of such half of the frame, and as these lines must each form a dilierent angle to the longitudinal axis of the beam each tape of yarns drawn from the said beam to a thread guide is clear of the neighbouring yarn tapes.

The method and suitable apparatus for its achievement will now be fully described with the aid of the annexed drawings in which:

Figure 1 is a plan of part of a doubling frame showing a beam centrally mounted thereon in a vertical position, Figure 2 being i an elevation showing, for the greater part in section, details of the means for maintaining the beam in position;

Figure 3 is an end view of Figure 2 showing the course of a single yarn from the beam to a spindle;

Figure 4 is an elevation showing the position of a beam which has been placed horizontally and centrally of the doubling frame, and

Figures 5 and 6 are res ectively side elevalion and plan of a simi ar arrangement to that of Figure 4 but with two beams in position, each being horizontal and each being placed over a point which is central of a section of the doubling frame below, to feed the spindles on either side of the beam in its own particular section.

So far as the doubling frame itself is concernod the views are dia ranimatical and show only sufficient of the name to allow of accurate and complete description of the present. invention. Only the lines of rollers 7, which are as usual, are shown therefore, with the position of four spindles 8 having bobbins 9 thereon; the travellers 10, the usual thread guides 11 behind the drawingrollers, and the guide rail 7".

Referring now more particularly to Figures 1, 2, and 3 centrally of the doubling frame is a fixed member 12 which is centrally bored and receives within it the cylindrical pelulent portion 13 of a turntable 14 which is annular to allow of the reception within it and within the member 13 of the end of a beam shaft 15 and boss 16 of a beam 17. An annular plate 18 is provided, fixed in any convenient manner to the machine framing,

and between the turntable 14 and the latter are provided the roller bearings 19. The table 14 can therefore turn freely and stead- 11y without any lateral play. A beam 17, which has been wound with yarns a: in the usual manner for doubling, is brought to the frame by means of a runway which is of known form and is merely indicated by the rail 20. To the runway rail 20 is fixed by aflange 21 a cylindrical bearing 22 which by means of a lower flange retains within it the flanged bush 23 whilst allowing of the said bush being slidden up and down within it. The beam 17 being brought, the bush 23 is raised and the beam placed in position with its lower flange resting on the turntable 14, and duly adjusted The bush 23 then dropped to encircle the upper end of the beam shaft 15 and the yarns 02 being brought to their respective spindle rollers 7 and to the bobbins 9, through the guides 11 which may be of any suitable and known form, doubling commences, the combined pull of the yarns serving to rotate the beam 17 around its vertical axis. Any suitable friction brake may be applied to the turn table 14 to prevent possible overrunning of the yarns by the impetus given to the beam and to ensure the necessary tension of the yarns. The path of the yarns from the beam to spindle is shown in Figure 1, the beam rotating clockwise and the yarns from the highest portion of the beam in situ going to the spindles which are the furthest from the said beam, those yarns which are unwound from the lowestpart of the beam being fed to the nearest iindles, as seen in liigure 1. The intermediate tapes of yarns take up their relative positions without entanglcn'ient as a result of this arrangement. It will be noted that as the space over the doubling frame on either side of the beam is clear of the guides or other encumbrances, the path of the yarns coming from the beam clear to the spindles on both sides of the frame.

In Figure 4; the shaft neck of the beam 17 is mounted in a hanging bracket 24one of which brackets is provided for each neck of the beam shaftand this bracket is suspended upon a rod 25 fixed above the frame. The yarns a; are led from the lower surface of the rotating beam to the left of the doubling frame, as viewed in the drawing, and those from the upper surface to the right hand side of the frame, the spindles on each side of the frame being thus supplied.

Figure 5 is a duplication of the mounting of Figure 4, two beams 17 being mounted in brackets 24 each beam being situate over the centre of a section of the frame and supplying the spindles on both sides of the frame of its own particular section. The course of the yarns from beam to spindles in this modification, and also in the modification of Figure 4, will be understood from Figure 6. Yarns 00 proceeding to the spindles to the left of each beam of Figure (3 and of the beam of Fiji} ure 4 are fed from the lower surface of the rotating beam 17 and yarns a? proceeding to the spindles to the right are fed from the upper surface, the beam 17 of Figure l or the beams 17 of Figure 5 rotating clockwise.

The height of the beam or beams above the doubling frame in the modilieatimis of Figures l, 5 and 6 may be any suitable. For instain-e with a very long frame where it is do sired to double from one beam only, as in Figure 1- the beam will be raismfh-variable lengths of brackets being rendered available for use for the purpose--to a. height to ensure that all the yarns shall have a free run to their respective spindles. \Vith such a long doubling frame, if a plurality of beams are cnu'iloyed as in Figures 5 and (3 the traverse of the yarns from the beam to the furthest spindle is of course shorter.

In these modifications where the beam or beams is or are horizontal, suitable means may be employed as in the construct ion when the beam is placed vertically, to prevent the said beam or beams from overrunning the yarns and to ensure tension on the latter. burh braking means for a. horizontal beam may COlIlPllSU av rope fixed at one end in any convenient way and passed over a. boss of the beam, a counterweight on the hanging end of the rope ensuring the required friction be tween boss and rope.

I claim A method of doubling yarns in a doubling frame direct from a yarn beam on which they have been wound, such method consisting in mounting the yarn beam rotatably with its longitudinal axis at right angles to a plane in which the length of the doubling frame is situated, and drawing the yarns by means of the u. all rollers direct from the beam to the guides behind the said rollers, the yarns taking straight paths from beam to thread guide, and the rollers delivering the yarns to their respective spindles.

In testimony whereof I have hereunto set my hand.

FLETCHER CHAD\VICK.

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