US966487A - Loom-shuttle. - Google Patents

Description

H. A. TITUS. LOOM SHUTTLE. APPLIOATION FILED FEB. 6, 1909.

966,487. Patented Aug. 9,1910.

. 22 J' /ezz'r' W. zz'i ua f O JVam lzlgy HENRY A. 'IITUS, OF PROVIDENCE, RHODE ISLAND.

LOOM-SI-IUTTLE.

To all whom it may concern:

Be it known that I, HENRY A. TI'rUs, of Providence, in the county of Providence and State; of Rhode Island, have invented certain new and useful Improvements in Loom- Shuttles, of which the following as a speci fication.

This invention relates to threading devices for loom shuttles, and has for its object to provide threading means whereby the operator, is enabled to quickly pass the weft thread or yarn from the shuttle spindle to and through the thread delivery eye, through which the thread passes from one side of the shuttle, a particular object of the invention being to prevent possibility of the displlacement of the thread relatively to the t read eye by movements of the shuttle, and to provide a device adapted to withstand the shocks and jars incidental to the opera tion of the shuttle.

- The-invention is characterized by a shuttle eye-piece inserted in and rigidly secured to the shuttle,a1'1d having a longitudinal thread delivering passage, and a. helical thread passage surrounding and comnumioatiug with the longitudinal passage, means being provided for guiding the thread into the inner portion of the helical passage, and the construction being such that the thread is adapted tobe transferred from the exterior of the eye-piece to the interior thereof by a rotary movement of the end portion of the thread around the eye-piece, said movementcausing the thread to pass through the helical passage until-it is properly contained in the longitudinal passage of the eye-piece.

f the accompanying drawings, forming a part of this specification,Figure 1 represents a top plan view of a portion of a shuttle embodying my invention. Fig. 2 represents a view similar to Fig. 1, the threading plate and its supporting post, hereinafter described, being removed. Fig. 3 represents a side elevation of a portion of the shuttle. ig. 4: represents a section on line 4-4 of Flg. 1. Fig. 5 relepresents a section on line 55 of Fig. 1. ig. 6 re resents a section on line 6-6 of-Fig. 1. ig. 7 represents a side view of an eye-piece constructed in accordance with my invention, detached from the shuttle. Fig. 8 represents a perspective view of *the eye-piece, the thread guiding post and the threading plate, said figure showing the direction of the thread after the threading operation. Fig.9 represents Specification of Letters Patent. Application filed February 6, 1909. Serial N o.

(Figs. 8 and 9) the Patented na a, rain. 476,399.

a view similar to a portion of Fig. 8, showing the direction of the thread before the threading operation has been completed and Fig. 10 represents a view similar to Fig. 5, showing a modification.

The same reference characters indicate the same parts in all the figures.

In the drawings,--12 represents a portion of the shuttle body, 13 represents a portion of the shuttle spindle on which is an accumulation 1 1 of weft'thread or yarn, and 15 port-ion of the thread located in and adjacent to the eye-piece, hereinafter described.

16represents an eye-piece, the preferred construction of which is shown in Figs. 1 to 9, inclusive, said eye-piece being tubular at its outer end portion, and closed or solid at its inner end portion, the latter being externally screw-threaded, as shown at 17, and rigidly secured to the shuttle body by being driven into a socket 18 its reception.

The shuttle body is provided with a chamber or cavity 19 at the inner end of the socket 18, said cavity having a cylindrical extension 20 which passes through one side of the shuttle body, as indicated in Fig. 5, and is in alinement with the socket 18. The outer portion of the eye-piece 16 projects across the inner end of the chamber 19, and into the extension 20, and is of smaller diameter than said extension, so that the outer portion of the eye-piece is entirely surrounded by an unobstructed space, as clearly shown by Figs. 3, 4:, and 5. The outer portion of the eye-piece contains a longitudinal thread passage 21, and a. helical thread passage 22 which surrounds and communicates with the longitudinal passage 21, said helical passage being in this case formed by cutting a helical slot through the tubular wall of the eye-piece, said slot opening at the outer end of the eye-piece and extending practically to the attached inner end portion.

The eye-piece, surrounded by an unobstructed space and having a helical thread passage communicating with a longitudinal thread passage, both opening at the outer end of the. eyepiece, is an important characteristic of my invention, and enables the thread 15 to be threaded through the eyepiece and properly engaged therewith by moving the thread around the eye-plece, and thus causing it to first enter the inner end of the helical passage 22, and then move along said passage until it has passed through all parts of the helical "passage and has been transferred from the exterior to the interior of the eye-piece, as illustrated by Figs. 8 and 9, Fig. 9 showing the thread before it has passed through the helical passage 22, while Fig. 8 shows the thread after it has passed through said passage, and has been properly threaded through .the eyepiece.

Means are provided for guiding the thread from the spindle 13 to the inner end of the helical passage 22, said means in the best embodiment of my invention'at present known to me, being as follows :-23 repreis curved, as shown in sents a post which is inserted in sockets 24 formed for its reception in the veye-piece at the inner end of the helical passage 22, said post preferably projecting below the eyepiece, as indicated in Figs. 1, 5, 8, and 9, its lower end entering a socket 25 in the shuttle body. The opposite end rtion of thepost igs. 4 and 8, and projects into the chamber 19. 26 represents a threading plate atfixed to the outer end of the post 23, said plate covering the greater portion of the chamber 19, Y being secured to the shuttle body partly by the post 23, and partly by a screw 27 inserted in a seat 28 (Fig. 2) at one side of the chamber 19.

A portion of the outer side of the shuttle body is cut away to form a wall or shoulder 29 extending along one portion of the edge ,of the threading plate 26, and .another ortion is cut away to form a wall or shou der 30'extending alon another portion of the edge of the threading plate. The shuttle walls 29 and 30 and the adjacent edge portions of the threading plate form thread passages 31 and 32 which communicate with thechamber 19, as shown in Fi .4 and 5. The shuttle body is provide with an inner slot 33 which communicates with the assage 31, as sh own in Fig. 6, the inner end of said slot being enlarged to form a thread guide 34: which is in alinement with the spindle 13,. and is ada ted to conduct the thread to the point where it engages the post 23, as indicated in. Fig. 8. The inner slot 33 is formed in the portion of the shuttle body which intervenes between the chamber 19 and the spindle-containing chamber of the shuttle.

35 represents an outer slot which extends through one side of the shuttle, and connects the passage 32 with the extension 20 of the chamber 19, as indicated in Figs. 1 and 3.

Owing to the fact that one end of the eyepiece is screw threaded, its accurate location for use may be readily secured as by means of a screw driver. It is not driven to place and can be inserted through the opening of socket 18 to the exact degree necessary to and 'movement of the causing the thread to move properly locate its helical passage, This firm mounting of the eye-piece by means of one end only, serves'another purpose in that the other end of the eye-piece may be completely surrounded by an annular space as clearly shown in the drawings. supported; end of the eye-piece is formed with a, longitudinal passage, the bore of which is tubular and formed with at least one complete helical assage 22 so that the This lin 1 wall of the eye-piece orms a. complete spiral barrier to the escape of the thread. If the helical passage comprised less than at least one. complete turn, the thread would be liable to escape from the longitudinal passage at the end of the throw of the shuttle beyond the selvage of the cloth; that is, when the shuttle-stops and returns, the

thread is slackened and is liable to escape from the eye-piece, if a complete barrier to its escape is not presented. Then of course if the outer wall of the eye-piece were in contact at any point with the inner wall of the opening, the thread would be liable to become caughtand to break if it starts to escape from the eye-piece. Hence, according to m invention, the cylindrical opening 20 is su ciently larger than the external diameter of the eye-piece to form a complete annular space. This of-course is necessary when the spiral or helix includes at least one complete turn because the thread must be carried around the outer side of the eyepiece in finding its way through the helical passage to the inside of the eye-piece.

The operation of threading the shuttle is as follows :The operator' first takes the leading end of the thread into the passage 31,

the thread passingunder the ortion of the" edge of the threading plate which forms a part of said passa e, andenterin the chamber 19, the inner s 0t 33, and gui e 34. The leading end of the thread is continued through the passage 32 and the outer slot 35, until the leading end is introthread now occupies the position shown in Fig. 9, the bend of the thread having been guided by the curved portion of the post 23; to the periphery of the eye piece at the inner end of the helical passage 22, so that the outer stretch of the thread extends along the exterior of the eye-piece. The operator ,duced into the cavity extension 20.

now impartsa circular lateral movement to I the outer stretch of the thread in the direction indicated by the arrow in Fig. 9, thus inwardly through the helical passage 22, the inward movement of the threadcommencing at the base of the post 23, and progressing along the passage 22 until the outer stretch is within the longitudinal assage' 21, as shown in Fig. 8. The thread is thus engaged with the eye-piece. in such manner that it cannot escape therefrom in a lateral direction. The.

friction developed by the abrupt turn of the thread where it bears on the post 23 imparts tensionto the thread. The curved form of the post 23. is such that the thread,

when it first passes under the threading plate and-bears against the outer portion of the curved post, is guided by the curvature of the post to the position shown in Fi 9.

It should be noted that the exterior o the eye piece has no projection which obstructs the space surrounding the eye-piehe. In other words, the exterior of theeyepiece is formed to permit the unobstructed passage of a stretchof thread around it in the operatioir iiffpassing the thread through the eye-piece as described.

In Fig. 10,Ishow a modified construction of the eye-piece in which the piece is made from a length of wire helically coiled, the convolutions surrounding a longitudinal thread passage which is the equivalent of.

the passage 2l,'while the helical space, between th is shown as forming a shank 37 which is embedded-inthe shuttle body The; postY v nnay be passedbetween two convolutions of the helical wire.

I claimz' 1 ,1. A shuttle eye-piece having one end externally screwthreaded and provided at its other'end with-a longitudinal thread pas-' sage the wall of said passage be tubular and formed with a complete hellca passage whereby the material of the eye-piece forms a completaspiral barrier to the escape offthe' "thread from the longfiudinal passage. i

2'. A; shuttle having an eye' plece aflixed a its inner portion to the shuttle body, its outer portion being surrounded by an unobstructed space and provided with a longitudinal thread passage, and with a helical e convolutions constitutes an equivalent of the helical passage;22. One end of the wire, ,from which the eye-piece is made,-

eating with the longitudinal passage, and

means for guiding a thread from the shuttle spindle to said space, said means including 'a-po st projecting from the eye-piece at the inner portion .of the helical passage.

I 3. A shuttle having an eye-piece aflixedat its inner poriton to the shuttle body, its

outerportion being surrounded by an unobstructed space and gitudinal thread passage, and with a helical provided with. a lonthread passage surrounding and communieating with the longitudlnal passage, a post projecting from the eye-piece at the inner portion of the helical passage, a threading plate supported by the post, portions of said plate forming walls of thread-guiding passages, the shuttle body having complemental walls completing said passages, and inner and/outer slots commun cating with said passages, the inner slot guidingthe thread I from the spindle to the post, while the outer slot -guides the thread from the threading .plate to the space surrounding the eye-piece. l A shuttle having its bodyformed with In testimony whereof I have affixed" my signature, in presence of two witnesses.

HENRY A. TITUS.

Witnessesz.

OsoAR LAPHAM, Joan: E. Tonm.

Images