US1761989A

US1761989A - Self-threading loom shuttle

Info

Publication number: US1761989A
Application number: US253092A
Authority: US
Inventors: Phineas A Millis; Johnson Marvin
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-02-09
Filing date: 1928-02-09
Publication date: 1930-06-03
Anticipated expiration: 1947-06-03

Description

June 3, 1930. j M|LL|$ ET AL 1,761,989

SELF THREADING LOOM SHUTTLE Filed Feb. 9, 1928 gmnntot Patented June 3, 1930 UNITED STATES PATENT OFFICE SELF-THREAJJING LOOM SHUTTLE Application filed February 9, 1928. Serial No. 253,092.'

The invention relates to shuttles used in weaving and to that type of shuttle known as self-threading shuttles, and has for its object the provision of means by' which the thread will readily find its way into the laterally directed thread passage, and when the shuttle is finally threaded danger of the thread pulling or flying out of the laterally directed passage is avoided.

The invention has particular reference to what is commonly known in the art as the Dra er shuttle, an example of which is shown in atent Number 834,606, of October 30, 1906. In this shuttle the delivery passage or eye of the shuttle is connected wlth the self-threadin mechanism by means of a Van tical slot. Ii the operation or the shuttle at times the thread will pull or fly-out of the eye through the vertical slot and runs on the self-threading device and continual occur rences of this action of the thread causes a groove to be worn in the self-threader so that eventually it is necessary to discard it.

In this invention the Vertical slot is eliminated and in place thereof a slot inclined to the base of the shuttle is substituted, this slot starting at one end of the eye, preferably the end toward the bobbin recess, thus making it impossible for the thread to pull or fly out I of the lateral or transverse passage after the shuttle is threaded, and furthermore the inclined structure of the slot assists in com pleting the threading of the shuttle as the thread is more easily drawn into the transverse passage than through the vertical passage employed in the shuttle referred to.

The invention will be described in detail hereinafter and will be found illustrated in the accompanying drawings in which Figure 1 is a top plan View of one end of a shuttle constructed in accordance with the invention.

Figure 2 is a side View of the same portion of the shuttle shown in elevation, and

Figure 3 is a fragmental plan View broken away and shown partly in section.

In the drawings similar reference characters will be used to designate corresponding parts throughout the several Views.

The body of the shuttle is designated 1 has a thread slot 4 alined with the thread passage 5 formed by the breast 6 and longitudinal ridge 7 that terminates with a tapered portion 8. The self-threading device has a horn 9 that directs the thread into the thread passage 10, said horn 9 having its base 11 extendedovertheridge? andcontacts withaportion of the body 1 designated 12 forming a continuation of said base 11 and spaced from the tapered portion 8 so that the thread that is threaded into the thread passage 10 by one movement of the shuttle by the reverse movement of the shuttle is moved through the passage 13 formed by the tapered portion 8 and the adjacent portion 12 of the body 1 7 into-the transversely directed or extending thread passage 14. The ends of said passage 14 are reinforced by pins 15 of steel or any other preferred material, and 16 is a pin usually employed to take the wear of the 7 'thread from the self-threader 3. It will be apparent that by providing the slot 13 at an acute angle to the base 1 of the bobbin body 1 and making the end of the slot communicating with the transversely directed thread passage 14 as shown in Figure 2, unthreading of the bobbin during operation of the loom will be eliminated.

What is claimed is 1-- 1. In a self-threading shuttle for looms, the combination with a shuttle body, a threading device having a longitudinal thread passage, and the shuttle body provided with a transversely extending thread passage communicating with said longitudinal thread assage, the body of the shuttle having an uno structed threading slot communicating with said transversely extending relatively narrow and straight thread passage tangential with respect thereto and at the rear thereof arranged at an acute angle to the base of the shuttle from one end of said passage to prevent casual unthreading of the shuttle.

2. In a self-threading shuttle for looms, the

combination with a shuttle body, a threading devicehaving a longitudinal thread passage, and the shuttle body provided with a transversely extending unobstructed thread passage communicating with said longitudinal thread passage, the body of the shuttle extended rearwardly over said transversely extending relatively narrow and straight thread passage ad]acent the top and rear thereof and tangentially with respect thereto and having the end of said rearwardly extended portion tapered, and the body of the shuttle at the rear of and above said thread passage spaced from said tapered portion forming a threading slot communicating with saidtransverse thread passage. In testimony whereof we affix our signatures.

PHINEAS A. MILLIS. MARVIN JOHNSON.