US2102829A - Braided article - Google Patents

Description

Dec. 21, 1937. P. H Bo|V|N v 2,102,829

BRAIDED ART I CLE Filed July 6, 1936 Fig.1 /7

INVENTOR F! HO RACE BOIVIN BY ATTO RN EV.

Patented Dec. 21, 1937 UNITED STATES PATENTIOFFECE Peter Horace Boivin, Granby, Quebec, Canada Application July 6, 1936, Serial N0. 88,934

1 Claim. (01. 96-27) This invention relates to braided articles and a lever l8 which bears upon a revolving chain l9 mechanism for producing the same. mounted on a fixed pulley 20 carried by a shaft It is well known that a loosely braided fabric 2| mounted in a frame member 22 and a floating possesses great crease and wrinkle resisting charpulley 23 carried by a bar 24 resiliently secured acteristics and consequently such a fabric is well to the framework by means of a spring 25. Chain 5 suited for the manufacture of neckties. Up to I9 is formed with a relatively long small link the present time, however, no convenient or pracsection A and a relatively short large link sectical method has been proposed for producing tion B constituting a cam surface. A spring articles of this type from such fabrics. 26 connecting lever l8 with the frame 8 normally An object of the invention is to produce neckurges the actuating rod IT to the right, as shown 10 wear or like shaped articles fromawholly braided in Figure 1, whereby when the lever 18 is in fiat fabric. Another object is to produce such a engagement with the small link section A of fabric in a continuous length having portions of chain I9, the worm 4 will be in mesh with worm varying cross-section formed by alternately loose- Wheel 1, but when the lar link Section B ly and tightly braiding the same. A further 010- gages the lever I8, it will be forced to the left to 15 ject is to provide a simple mechanism for automove worm 4 into mesh with worm wheel 6. matically and alternately varying the speed of the Means for revolving chain I9 in accordance with take-up rolls of a braiding machine whereby the the speed of shaft l comprises a ratchet wheel fabric produced thereby will be alternately loose- 21 mounted on shaft 2| and adap to be actuly and tightly braided, which mechanism may ated by a ratchet bar 28 eccentrically mounted 20 be readily applied to braiding machines now in for reciprocal motion on a worm wheel 29 driven use. by a worm 30 on shaft l. A spring 3| urges The invention will be described with reference the bar 28 into engagement with the ratchet to the accompanying drawing, in which, wheel 21. Figure 1 is a side elevation of a mechanism in The fabric which is led from the machine under 25 accordance with the invention, tension by means of the take-off rolls 3, is indi- Figure 2 is a front elevation of the mecha- Gated at 32, and it will be readily appreciated nism shown in Figure 1, and that, when at intervals the speed of the rolls Figure 3 is a plan of a fabric produced by the is increased and a greater pull exerted on mechanism shown. the fabric, a more tightly braided section of 30 In the drawing, l is the usual driven upright fabric having a greater number of yarn twists shaft for driving the horizontal shaft 2 of the or turns to the inch will be formed during such take-up rolls 3 of a flat braiding machine. Instead intervals. Thus, as the fabric emerges from the of the usual single set of gearing between the rolls and the tension thereon is released, the

shafts l and 2, two sets are provided each arloosely braided sections will widen out but the 35 ranged to be actuated by a worm 4 on shaft I, tightly braided sections, being composed of a which is provided with auniversal joint 5 wheresolid compact fabric, will retain their narrow by the worm 4 may be moved into engagement cross-section. Therefore, with the mechanism with one or other of two worm wheels 6 and described a fabric will be produced, such as is 0 1 adjacently mounted in framework 8. Worm shown in Figure 3, having alternate wide loosely wheel 6 is carried by a shaft 9 on which is braided sections 33 and narrow tightly braided mountedagear l0 meshing witharelatively small sections 34, the sections 33 being of a greater gear ll carried by shaft 2 of the take-up rolls. length than the sections 34. It will be observed Worm wheel 1 is carried by a shaft l2 on which that the lengths of the sections 33 and 34, as

is mounted a gear I 3 meshing with a gear l4 well as the widths thereof, may be varied at will 5 rotatively carried by a shaft I5, gear l4 having by adjusting the chain l9 as to number and size meshing engagement with a relatively large gear of links, thus increasingor decreasing the fre- I6 carried by shaft 2. Thus driving of shaft 2 quency and extent of movement effected by the through one set of gearing by means of large cam surface.

gear IE will be at a smaller speed than through Any desired pattern may be incorporated in 50 the other set of gearing by means of small gear I l. the fabric during the braiding operation. It has Means are provided for automatically and alterbeen observed that a fabric especially suitable for nately placing worm 4 in mesh with worm wheels the production of neckties having crease-resist- 6 and 1 and comprises an actuating rod l1 coning characteristics may be produced from an nected to shaft l and adapted to be actuated by ordinary crepe twist yarn and. that a rayon or 55 I claim: 7

A necktie comprising a flat one-ply fabric of braided crepe yarn, the crepe yarn of the end portions of said fabric being relatively loosely V braided to form non-creasing tie sections and the yarn in the intervening portion being tightly braided to form a relatively inextensible neck band portion adapted to slip easily through a collar.

P. H. .BOIVIN.

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