US1549960A - Weft-detecting mechanism - Google Patents

Description

Aug. 18, 1925.

O. BOUCHARD WEFT DETECTING MECHANISM Filed Oct. 1 2, 1923 Patented Aug. 18, 1925.

UNITED STATES 1,5493% PATENT caries.

ONESIME no ucnann, or SHAWSHEEN VILLAGE, ANDOVEB, MASSACHUSETTS, as

SIGN'OR TO CROIVIPTON & KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS,

A CQRPORATION OF MASSACHUSETTS THEFT-DETECTING MECHANISM.

Application filed October 12, 1923. Serial No. 668,078.

To all whom it may concern:

' Be it known that I, ONnsrMn B'OUCHARD, acitizen of the United States, residing at 'Shawsh-een Village, Andover, in'the county of Essex and State of Massachusetts, have invented a new and useful iVeft-Detecting Mechanism, of which the following is a specification. 1

This invention relates to weft detecting mechanism of the multiple plunger type, as shown for instance in the prior application of Eppa H. Ryon, Serial N 0. 509,113, filed October 20, 1921. It has been found that such detecting mechanism is liable to injury "when engaged by a misplaced bobbin and it has been heretofore pro-posed to provide a yielding stand or mounting for the detecting mechanism, by the use of which such injury may be largely avoided. It is the ob ject of my invention to provide an improved construction and arrangement of parts by which the detector stand may be supported for such yielding movement.

A preferred form of my invention is shown in the drawings in which- Fig. l is a side elevation of my improved detecting mechanism, with the shuttle and shuttle boxes shown in section;

Fig. 2 is a front elevation of the parts shown in Fig. 1;

Fig. 3 is av sectional plan view, taken along the line 3-3 in Fig. 1;

Fig; 4 is a. sectional rear elevation, taken along the line 44 in Fig. 3;

Fig. 5 is a sectional side elevation, taken along the line 5-5 in Fig. 4, and

Fig. 6 is a perspective view of a detail part to be described.

Referring to the drawings, I have shown a portion of a loom frame 10 to which is secured the usual magazine frame 11 on which a weft carrier transferrer 12 is pivoted at 13. A plate or bracket 14 is securedby a bolt 1.5 to the loom frame 10 and provides a support for the detector stand 16. The

stand 16 has a rearward projection 17 which extends through an opening in the bracket 14 and which provides a rear bearing for a plurality of U-shaped detector rods or plungers 18.

A front bearing for the pluugers 18 is also provided in the stand 16, as clearly shown in Fig. 5, and the rearwardly extended short upper ends 18 of the rods or plungers 18 normally extend into "the path of a floating lever 19 (Fig. '2) pivot a lly connec'ted at 20 ":to the lower end of a link 21, and also pivoted at-22 to an actuating rod 23. The link 21 is connected to suitable mechanism by which substantial exhaustion of weft in the active shuttle may be indicated and a selected fresh wcf t carrier may be released,

The parts thus far described are in general of the usual type and in themselves form no part of my present invention, which relates particularly to improved means for yieldiugly securing the stand 16 to the bracket 14. For this purpose I provide a forwardly extending spring frame 25 (Fig. 6), preferably formed of sheet metal with open central portion and a-d-aptedto be "rear side of the bracket 14 by a cross pin 32.

The openings 27, 28 and 29 are of substantially greater diameter than the spring 30 and thus permit free rocking movement of the stand 16 and spring frame 25 in any direction, while remaining effective to return the stand to its seat immediately upon release thereof. The spring frame 25 is preferably formed with a forwardly and upwardly extending flange 33 which forms a stop to limit forward movement of the plungers 18.

The general method of operation of the multiple plunger weft detector is well known and fully described in prior patents and applications. Further description thereof is not believed necessary, as my invention relates specifically to the improved construction by which an elongated tension spring may be used in such a way as to permit free yielding movement of the stand in any direction. It is believed that this is a marked improvement over the constructions heretofore known or used.

Having thus described my invention, what I claim is 1. In a weft detecting mechanism, a stand, a fixed frame member by which said stand is supported, and means to yieldingly secure said stand to said member, said means comprising a forwardly extending spring frame mounted on said stand, and a tension spring secured to said spring frame at one end and to said fixed member at the other end and holding said parts in yieldingly contact.

2. In a weft detecting mechanism, a stand, a fixed frame member by which said stand is supported, and means to yieldingly secure said stand to said member, said means comprising a forwardly extending spring frame mounted on said stand and having an open center portion, and a tension spring secured to said spring frame at one end and extending through said open center portion and having its opposite end secured to said fixed frame member.

3. In a weft detecting mechanism, a stand, a fixed frame member by which said stand is supported, and means to yieldingly secure said stand to said member, said means comprising a forwardly extending spring frame mounted on said stand and having an open center portion, and a tension spring secured to said spring frame at one end and extending through said open center portion and having its opposite end extending through aligned openings. in said stand and fixed frame member and secured at the rear of said member.

4. As an article of manufacture, a spring frame for a weft detecting mechanism, said frame being formed with an open center portion to receive a tension spring and having mans for attaching one end of the spring thereto.

5. In a weft detecting mechanism, a fixed frame, a detector supporting stand mounted in normal fixed position on said frame but movable with respect thereto in vertical and horizontal planes, a detector slidably mounted in said stand, and resilient means holding said stand and frame in operative relation and having one end anchored with respect to the frame and the other end anchored with respect to the stand, that portion of said resilient means anchored to the stand being free to bend with respect to the portion anchored to the fixed frame.

(5. In a weft detecting mechanism, a fixed frame a detector supporting stand mounted in normal fixed position on said frame but movable in vertical and horizontal planes with respect to said frame, a detector slidably mounted in said stand and resilient means passing through said f 'ame and stand and having the ends thereof anchored respectively in the stand and frame, that portion of the resilient means in the stand being capable of lateral movement with re spect to that portion lying in the frame.

7. in a weft detecting mechanism, a fixed frame, a detector sumporting stand mounted in normal fixed position on said frame but movable in vertical and horizontal planes, :1 (.letector slidably mounted in said stand, and a spring having one end anchored with respect. to the frame and the other end anchored with respect to the stand and passing through said frame and stand.

In a weft detecting mechanism, a fixed frame, a detector supporting stand mounted on said frame and movable in vertical and horizontal planes with respect thereto, and resilient means free to bend on its axis supported at the ends respectively by said frame and stand, the portion of said resilient means in said stand being movable to a position out of alignment with the portion in said frame when said stand moves vertically or horizontally with respect to the frame.

In testimony whereof I have hereunto aliixed my signature.

ONESIME BOUCHARD.

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