US1776896A - Shuttle - Google Patents

Description

Se t. 30, 1930. E, FQ L R 1,776,896

SHUTTLE Fild D00. 1, 1927 zzz. n

Patented Sept.-3(i, 1930. v V

EMIL YE. FULLER, F woonsocxn'r, Races ISLAND, Assreivoiz. TOSHAMBQW SHUTTLE H COMPANY, or woolvsooxnar,"nnonn'lsL uvn,A-conronarion or; nrronn ISLAND].

' SHUTTLE. 1

Application and samba i, 1927." seria no. 236,940}

Tlhe present invention relates toan im-. provement in shuttles, andmoreparticularly to automatic weft replenishing shuttles provided withfriction tension devices;

In weaving silk and rayon the extreme elasticity ofthe yarn requires provision to prevent loops forming which sometimes cause yarn breakage.

r The object of the present invention is to produce an improved form ofthread block for automatic weft replenishing shuttles'having a thread tension contributing to the control of the thread in running off from the shuttle.

The invention consists in the shuttle herein afterdescribed and particularly defined 1n the claim.

In the accompanying drawingsillustrating the preferred form of the invention,Fig. 1 is a plan of the thread block end of a self-threading shuttle embodying the present invention;

v Fig. 2 is a front elevation ot the same; Fig. 3' r r is a front elevation of the thread block ,Fig.

. (his a front end elevation of the thread block;

Fig. 5 is a rear elevation of the threadblock; Fig. 6 is a rear end elevation of the thread block; Fig. 7 is a longitudinal vertical section taken on the line 7. 7, Fig. l; and Fig. 8

is a transverse vertical section takenon'the tion is described as follows: The shuttle body line 8+8, Fig. 3.

The illustrated embodiment of the inven- 10 has the usual bobbin recess 11 provided, in the case of rayon or silk, with cony fur. The thread block 12 is received in the thread block recess in the shuttle, and it hasa table 13, a beali 149a thread passage '15 and eye 16, all'of which occupy the same positions and perform th'e same functions as is usual this class of shuttles. So far as the invention is concerned, anyform of shuttlehavingthese. general characterlstics 1s available for use in connection with thepresent invention.

The block is provided with a pin'17 located in the passageway from the thread. passage tothc shuttle eye, and projecting'downward in an inclined direction, as shown in Fig. 3, the inclination belng such as to permit easy passage of the thread beyond the pm, but to prevent passage outward from it. g Located in the body of thefthread block is a :tension slot 18, which reeeives the tension 7 plates held together. by spring pressure. The

lower tension plate consists of'a flatplate with rounded side edges and, a curved lip 21 at the entering end. which projects-into ajhole 22 in the lowerpart 23 ofthe thread block.

The other end of this tensionp'iece 20-is provided with alhole which receives thereduced end 24 of the screw 25, screwed into the lower ';part 23 of the thread block. fThe upper tension'jmember 26 is a siinilar plate to the first. w th rounded edgesand'an'iqoturned lip 27, which projects into thOmhOlG 2'8 in the under side. of the upper part 29 ofthe thread block.

The otherend of the upper tension plate 26 is provided with a hole which receives the end24 of the screw 25. Aspring-pressed pin is provided with a head which rests on'the upper tensionplate 26. This pin is encircled by a spring received in the adjusting screw 31, the upper endofw-hich extends to the top of the thread blockand aifords means for varying the pressure which the spring exerts upon e the uppertension member, pressing it against the thread supported by the lower tension member. i i

' The thread block is also provided I an enamel pin 321ocated near the inner end tof the tension device, see' Fig. 7.'-' Thelshuttle threads upin the usual manner? On thefirst shot of the shuttleto the left. as viewed in Fig. 1, the thread enters the thread'passage and descends into the recess 34 of 'the shuttle in Fig- 1, extending through'the threadfpas sage touthe glass rod 32, thenceat an angle nose, and on the neXt shot in the opposite i between the'membe'rs of the tension device to ,the shuttle eye, where itQis discharged be tween the usual porcelain wear pins-33 of the shuttle.

The tension applied by the device to the thread may be adjusted by means of the screw 31 to a greater or lesser amount, depending upon the character of the yarn being woven.

In some common forms of tension devices found in self-threading shuttles, the entrance of the thread into the thread passage is resisted by the requirement that the thread should at the same time enter between the members of the tension device. In the present construction there is no impediment to the free entrance of the thread into the thread passage of the thread block, after which, when the thread is thoroughly caught by the block, the thread will be drawn into the tension device. The thread is prevented from escape from the tension device by the pin in the passageway leading from the thread passage to the shuttle eye, and it is drawn over the glass pin at the point where its direction of motion changes from that in line with the thread passage to the direction'in which it passes through the shuttle eye, so it is thereby guided over good-wearing parts'in its passage from the bobbin to the eye, and prevented from any accidental escape therefrom.

The tension members themselves are identical in form, and this conduces to cheapness and facility of manufacture. Furthermore, when worn to an extent requiring replacement, this is easily accomplished by taking the thread block out of the shuttle and removing first the screw 25, which releases the one pair of ends of the tension members, and then withdrawing the pin 17, which is held in place by friction in the hole in which it is supported, whereupon the two tension members'may be turned from the position which they normally occupy in the shuttle, to a positi on extending outwardly therefrom, with their upturned lips 21 and 27 still remaining in the holes 22 and 2S, whereupon, by tipping the upper tension member upward, it may be taken out, and similarly, by tipping the member downward, the latter may be removed and new ones inserted.

Having thusdescribed the invention, what is claimed is: i

A shuttle having a thread block provided with a thread passage, a tension device located parallel to the thread passage and in front of the same in the line of the lead of the thread from the thread passage to the shuttle e e such tension device com )risim two hori-' zontal tension members, each provided with upturned side and front end lips, and with holes at the ends opposite the upturned lips,

a pin in the shuttle block passing through theholes in the tension members to hold these ends in place, and the block being provided with positioning holes to receive the upturned lips of the other ends of the tension members. i

In testimony whereof I have signed my name to this specification.

EMILE. FULLER.

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