US2002131A

US2002131A - Shuttle eye

Info

Publication number: US2002131A
Application number: US673164A
Authority: US
Inventors: Philip L Spencer
Original assignee: WATSON WILLIAMS Manufacturing Co
Current assignee: WATSON WILLIAMS Manufacturing Co; WATSON-WILLIAMS MANUFACTURING Co
Priority date: 1933-05-27
Filing date: 1933-05-27
Publication date: 1935-05-21
Anticipated expiration: 1952-05-21

Description

y 1935} P. 1.. SPENCER 2,002,131

SHUTTLE EYE Filed May 27, 1935 Patented May 21, 1935 1 UNITED; STATE PATE N OFFICE- SHUTTLE EYE Philip; L. Spencer, Millbury, Mass.,"assi'gnorto Watson-'Williams Manufacturing Company; Millbury,lilass., a corporation of Application May 27, 1933, Serial No. 673,164

' tonnes. '(cl. 139 217) This invention relates to self threading blocks for loom shuttles and particularlyto thread tension devices therein. l i I T l 1 'It is the general object of my invention to provide an improved construction by Whichthe tension elements will be more securely mounted in the threading block and will be betterladapted tor'esist wear. 1

More specifically, Iprovide a separate, tubular steel retainer for" the tension members, within which the movements of the tensionmembers areconfined. i i

I alsoiprovide .animproved device for retaining one of the tension springs in operative position but permitting 'convenient removal thereof.

My invention further relates to arrangements and combinations oi parts which willbelhereinafter described and more particularly pointed out in'the appended claims.

A preferred form of the invention is shown in the drawing, in which 1 Fig. l is a partial plan view of a shuttle having my improved shuttle eye mounted therein;

Fig. 2 is a front elevation of the eye, looking-in the direction of the arrow 2 in-Fig. 1;

Fig. 3 is a bottom View looking in the direction of the arrow 3 in Fig. 2;

' Fig. 4 is a rear elevation looking in the direction of the arrow 4 in Figs. 1 and 3;

Fig. 5 is an enlarged transverse sectional elevation taken along the line 55 in Fig. l;

Fig. 6 is a side elevation of the retainer for the tension members; i

Figs. 7 and 8 are end views thereof, looking in the direction of the arrows I and 8 in Fig. 6;

Fig. 9 is a side elevation of one of the tension members, and T l 10 is an edge view thereof.

Referring to Fig. 1, I have shown portions of a shuttle S having my improved shuttle block mounted therein in the usual manner.

A threading block 28 is provided with a longitudinal thread passage 2| (Fig. 1), a horn 22 and an overlying lip portion 23. A lateral outlet or passage'24 (Fig. 2) is provided below the horn 22, and the thread is retained in the passage 24 by a depending projection 25.

Guide members 26 and 21 (Fig. 3) are provided adjacent the outlet 24 and direct the thread to a side opening 28 (Fig. 1) in the shuttle S. The guide members 26 and 21 may be formed of glass or other very hard material which will resist the wear of the thread. A depending hook 29 (Fig.

1) projects laterally and downwardly into the wide entrance portion of the threadpassage 2 l At an intermediate point in the thread passage .2l I'provide a pair'of tension members 30 (Figs. 9 and 10), which are preferably made of thin'sheet steel or similar material of segmental cross section. ,The tension-members have outwardly inclined upper end portions3l to guide the entering thread. i v

I also provide a retainer 32: (Figs. 6 to 8) for the tension members, said retainer preferably being made of thin sheet steel bent to an oval cross section and provided with elongated thread openings or

slots

33 and 34 inthe end walls' thereof, the

openings

33 and 34 extending downward from vthetop edge of. the retainer and the front opening 34 being of greater depth. Holes, 35 and 36 are provided in the side faces of the retainer 32 for purposes tobe described.

The retainer 32 is pressed into an oval recess 49 (Fig. 5) extending upward from the bottom of the threading block 20 and thereafter forms a permanent part of the shuttle eye.

Tension springs 4| and 42 extend through the openings 35 in the sides of the retainer 32 and their adjacent ends engage the tension members 30. The outer end of the spring 4| is received in a pocket or recess 43 in the side wall of the threading block 20, said recess being aligned with one of theopenings 35.

The other spring 42 extends into an opening ISO 44 in the opposite side wall of the threading block 7 20 and is retained in position by a plate 45 which is inserted from below in an undercut or T-slot 46 (Fig. 3). A cross pin 50 extends through the lower portion of the threading block 20 and positively retains the tension members 30, retainer 32 and plate 45 from displacement. The plate 45 is notched at its lower edge as indicated at 5| (Fig. 4) to receive the pin 50.

When so desired, the retainer 32 may be hardened and tempered before insertion in the recess 40 of the eye 20.

In assembling the parts the retainer 32 is first forced into the oval opening in the threading block 20, the spring 4| is then positioned inthe recess 43, the tension members 30 are inserted from below, the spring 42' is placed in position in the opening 44, and the plate'45 is pushed upward from below to retain the spring 42 in the opening 44. The pin 50 is then inserted, securing all the parts in operative relation.

It will be seen that the manufacture of my improved shuttle eye is much simplified by the construction described and particularly by the use of the retainer 32 and the spring-holding plate 45.

Furthermore, the tension members 30 engage only the inner surface of the retainer 32, which, as previously stated, is to be made of steel or other material which more effectively resists wear than the bronze castings from which the eyes 20 are usually machined, As the tension members 323 arethe only movable'parts which can cause wear of the shuttle eye, the life of the shuttle eye is much prolonged by my improvements. It has been found that such tension members engaging directly with the bronze casting will rapidly form notches or recesses in the casting'on the sharp edges of which fine thread, such assilk or rayon, are easily cut or broken.

Having thus described my invention andthe' advantages thereof, I do not wish to be limited to the details herein disclosed otherwise than as set forth in the claims, but what I claim is:-'-

a 1. In a shuttle, a threading block having a longitudinal thread passage therein and having a recess extending upward from the bottom of said block in said passage and closed in part at its upper end, apair of vertically disposed tension members, a tubular retainer for said tension members slidablyfinsertable in "said recess from below, and means to secure said tension members in said retainerand said retainerin said recess, said retainer being formed of thin sheet metal and having elongated thread slots extending downward from the upper edges of opposed wall portionsthereof. r;

2. In a shuttle, a threading block having a longitudinal thread passage and having a recess extending upward fromthe bottom of said block in said passage, a pair of vertically disposed tension members mounted in said recess, a spring for one of said tension members, an openingin said block for said spring, a plate to close said opening, said block having guideways in which said plate is slidable, and means to hold said plate in closing position,

3. In a shuttle, a threading block having a longitudinal thread passage and having a recess extending upward from the bottom of said block in said passage, a pair of vertically disposed tension members mounted in said recess, a spring for one of said tension members, an opening in said block for said spring, a plate closing said opening, and means to hold said plate in closing position, said plate being removably mounted in an undercut recess in one side wall of said block.

4. In a shuttle, a threading block having a longitudinal thread passage and having a recess extending'upward from the bottom of said block in said passage, a pair of vertically disposed tension members, a tubular retainer for said tension members, a spring for one of said tension members, a plate to hold said spring in operative position, said block having guideways in which said plate is slidable, and means to secure said retainer, said tension members and said plate in said block.

5. In a shuttle, a threading block having a longitudinal thread passage and having a recess extending upward from the bottom of said block in said passage, a pair of vertically disposed tension members, a tubular retainer for said tension members, a spring for one of said tension members, a plate to hold said spring in operative position, said block having guideways in which said-plate is slidable, and a single pin in said block extending crossways of said retainer, said plate and said tension members and holding all of said parts in operative relation in said block.

PHILIP L. SPENCER.