US1831482A

US1831482A - Circular weaving loom

Info

Publication number: US1831482A
Application number: US463999A
Authority: US
Inventors: David Tony
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-06-28
Filing date: 1930-06-26
Publication date: 1931-11-10
Anticipated expiration: 1948-11-10

Description

Nov. 10, 1931. T. DAVID Nov. 10, 1931. vT. DAvi'n v 1,831,482

CIRCULAR-WEAVING Loom Filed June 26, 1950 2 Sheets-Sheet 2 Patented Nov. 10, 1931 UNITED STATE TONY DAVID, orLYoir,` FRANCE a f CIRCULAR WEAVINQ Looivr Application filed June 26, 1930, Serial No. 463,999, and in Germany June 28, 1929.

My invention relates to a driving device for shuttles or heddles 1n circular weaving looms. This device comprises a non-rotating m deformable member in cooperation with a rotating solid member which gives the former a shape comprising projections and` de pressions; these projections and Vdepressions rotate with the solid member( l j Ina weaving loom using my invention', a

"1,0 first device is used todrive the shuttles. The

m shed of warp threads.

are used for driving the latter are'housed within the successive depressions of the deformable member and they are pushed by the projections through one rIwo other devices heddles; supposing that a talieta weave is desired, oneseries of heddles is attached to the deformablemember of the first device, theother heddles be'- ing attached to the other member and both members are driven in synchronism with the shuttles, the projections of one corresponding with the depressions of the other and with the shuttles to insure the shedding.

In the annexed drawings: f Fig. 1 is a partial plan view of a circular loom according to my invention. y

Fig. 2 is a section on line IV-IV of Fig. 1. Fig. 3 is a fragmental plan View in which only the heddles and their driving mechanism are represented.

- showing the rear 5 nected parts.

'Figs 4 and 5 reproduce portions of respectively Figs. 2 and 3, to an enlarged scale. Fig.' 6 is an enlarged fragmental plan view y, of a shuttle and the con- The` circular weaving loom represented comprises a cylindrical warp, unwound from warp beams, from which the threads rise, the fabric t being wound in the upper portions of the loom.

The warp threads z' and p are drawn through the eyes of heddles l and 2 respectively. It is assumed that p are the even threads ande' the odd ones. The heddles 1 and 2 are radially arranged (Figs. 2 and 4) into two superposed horizontal planes. The inner ends of the upper heddles 1 are fixed to a flexible endless band 3 andthe Ainner ends o. of the lower heddles 2 are also lixed to lanother flexible endless band 4.

Bands

3 and 4 arel'p'assed over .idlers 5 and 6 circularly 'arrangedaround the axis 'of the loom." j" These 'idlers are supported by arms 7 and 7a'ik xedto an :annular member or rim 8, ,which is integralfwit-h rays 8a and a hub 8b keyed on the driving shaft 9of the loom...

The loom represented comprises .fourteen yslnittles and fourteen groups of idlers' are provided,each group comprising two kidlers 5 and two idlers-6. Of course, according to kthe length of the shuttles and to the diameter ofthe loom, the number of idlers of eachy groupcould'bevaried; l' Y y' f It will be apparent,from Fig. 2, that to obtain'the sameangulari-opening 'ofthe warp sheds, the' amplitude of the motion of heddles '2 must be somewhat greater than in the case of heddles 1. Idler's 6 are thereforegreater in diameter't-ha'n idlers 5. .It'will yalso: readily vbeunderstood,` from Fig;V 3, that lthe undulations of bands 3 andv 4 aren'opposition'so that for a shuttle@ the warp threads are exterior, threadsl a being interior, these .respective positions 'being 'inverted for' the next shuttle; With such an arrangement, a taffeta weave is manufactured on the loom. j I l The shuttles are driven by means of a third 'endless'band 10 which passes over a group of idlers'11`and'12 lrotata ly supportedby arms '13and 13a, vfixed to rim 8, idlers12 being ex- "teriorto band 10y and idlers 11 being interior. 'Band'10 is thus'driven a series of V-shaped undulations vasclearly shown in Fig. 1, the number of undulations beingv equal' to the lnumber of shuttles, viz. fourteen in the loom represented.- 'l v Y BandplvO. is provided with

double pins

19 and 20 comprising an exterior pin 19 having a threaded tail driven through the band and on which is screwed a hollow pin 20 having a blind threadedhole. v'

Pins

19 and 20`t into circular depressions 21 provided in

idlers

11 and 12, and thus maintain band 10 against falling down by gravity (Fig. 4). l Pins 2,0 are also adapted Itocooperate'with a cylindrical comb 18 with which theymesh ras if they were gear teeth fixed on the periphery of idlers 12 (Fig. 6). Thus band'lO remains substantially stationary during the rotation of the shuttles. As shown, Fig. 4, cam 18 is supported by uprights 22 fixed to the loom frame b and located between two successive heddles.

Pins 19 are also adapted to contact the rear of the shuttles (such as n Fig. 6) through the inner warp shed in the case of Fig. 6) The rear part of-the shuttles is given a concave section which lits with the path of pins 19 around idlers 11 as shown in Fig. 6. During the rotation of idlers 11 around the axis i rotate with .the shuttles.

of thev loom, the shuttles arethus pushed through the sheds.

Each shuttle nis supported by an annular track formed by

radial members

15 and 16 arranged circularly between the heddles. A s

third circular range of radial members 17 is provided to laterally maintain the 'upper part of the'shuttles (Fig. 2).

Of course, the angular position of the groups of idlers 5 and 6 with respect to

idlers

11 and 12 is such that the shed is formed in front, of a shuttle and is closed at the rear thereof. Each shuttle is provided with a downwardly projecting guiden which passes through the twoV circular ranges of radial members 14 and 15 which form the shuttle track.

Each

band

3, 4 or 10 is formed of a metallic inner band 40 (of steel for instance) coated onboth sides with lateral bands 41 of leather. The inner metallic core 40 of

bands

3 or 4 has one of its edges provided with small projections terminating into balls and 31 respectively for the bands 3 and 4 (Fig. 4). The inner metallic core of bands 3 or an eye through which is forced a

ball

30 or 31; The heddles arethus rmly attached to the bands but may be readily disengaged when necessary.

Somel projections of the bands are longer than the other ones sofas toV project through the

balls

30 or 31 as shown at 32 or 33 in Fig. 4 and they cooperate with

radial slits

24 and 25 provided in plates 23'xed to the upvrights 22A (Figs. 4 and 5). By such an arrangement, the bands remain free to move radially (the lengths of

slits

24 and 25 Ybeing suiiicient) and they are maintained radially against rotation around the axis of the loom.

The outer end of heddles 1 or 2 is provided with an elongated eye 1a or 2a loose on pins 28'and 29 fixed on

annular members

26 and 27. rlhese pins form guide for the heddles.

The loom works as an ordinary weaving loom having two heddles frames anda plurality of shuttles workingin `regular succession. Y

t It will be observed that by providing other groups of heddles bands such as 3 and 4, the

loom could work as an ordinary weaving loom having four, six, eight, etc., heddles frames.

Iclaim:

l 1. AV circular weaving loom comprising warp threads circularly arranged with respect to the loom axis; shuttles cooperating with said warp threads; means to drive said shuttles; heddles adapted to control said warp threads; flexible members to which one end of said heddles is attached; and means to give said members a series of undulations to insure shedding of the warp threads, said means rotating in synchronism with the shuttles.

A 2. A circular weaving loom as claimed in claim 1, wherein the'flexible members do not 3. A circular weaving loom as claimed in claim 1,wherein the flexible members are in the form ofendless inextensible bands.

4. A circular weavingloom as claimed vin claim 1, wherein the flexible members are in the form of bands* having a metallic core coated with leather.

5. A circular weaving loom as claimed in claim 1, wherein' the flexible members are in the form of endless inextensible bandshav-V ing projections Valong one of their edges, one end of the heddles being attached to said projections, and some of said projections registering with fixed slits,'parallel to the motion of theA heddles, said slits and projections c0- operating together to maintain said bands against rotation.

l 6. A circular weaving loom as claimed in claim l, wherein the means adapted to con- 'trol the shape of the flexible members are in the form of rollers supported by arms rotating with the loom.,

l 7. A circular weaving loom comprising warp threads circularly arranged with respect to the loom axis; shuttles adaptedto cooperate with said warp threads; a circular track for the shuttles; means to control said warp threads to insure shedding of the same; a flexible member co-axial with the loom; and means to give said member a series of undulations in which the shuttles are inserted, said means being driven by the loom mechanism, whereby the vshuttles are pushed on their track around thev loom axis.

8. A circular weaving loom as claimed in claim 7 wherein the shuttle-driving flexible member does not'rotate with the shuttles.

9. A circular weaving loom as claimed in claim 7 wherein the shuttle-driving iiexible member is in the form of .an endless band.

10. A circular weaving loom as claimed in claim 7, wherein the shuttle-driving flexible member is in the form-of aband having a metallic core coated with leather.

11. A circular weaving loom as claimed in claim' 7, wherein the shuttle-driving flexible member is a band having pins on its face nearest to the shuttles, said pins being adapted to contact the'shuttles through a warp shed.

A 12. A circular weaving loom as claimed in claim 7 5 wherein the shuttle-driving flexible member is a band having pins on its face remote to the shuttles, said pins cooperating with a fixed circular comb to hold said band against rotation with the shuttle-s.

13. A circular Weaving loom as claimed in claim 7, wherein the means adapted to control the sha-pe of the shuttle-driving flexible member are in the form of rollers supported by arms rotating With the loom mechanism.

In testimony thereof I aix my signature.

TONY DAVID.