US1205791A - Weft-detecting mechanism for looms. - Google Patents

Description

E. H. RYON.

WEFT DETECTING MECHANISM FOR LOOMS.

APPLICATlON HLED 050.29, 19w.

1,205,791, Patented Nov. 21, 1916.-

2 SHEETSSHEET I.

E, H. RYON.

WEFT DETECTING MECHANISN FOR LOOMS.

APPLICATOH FILED DEC. 29 9]5- i$$5fi91 a Patented Nov, 21, 1916.

2 SHEETS SHEET 2.

MIL Hunk, nnms Cu mmm unm. WAsHhVh/Jh. nv c snares N FFTC EIPPA H. RYON, OF WAL'IHAIVI, MASSACHUSETTS, ASSIGNOR T0 QBOMPTON & KNOWLES 1300M WORKS, 0F WORCESTER, MASSACHUSETTS, A CORIORATION OF MASSACHU- SETTS.

THEFT-DETECTING MECHANISM FOR LOOMS.

mower.

Specification of Letters Patent.

Patented Nov. 21, 1216.

To all whom it may concern Be it known that L'EPPA' H. Bron, a citi State of Massachusetts, have invented a new,

and useful Weft-Detecting Mechanism for Looms, of which the following is a specification.

This invention relates to a weft detecting mechanism for'looms, ofthe type in which a plurality of separate independently movable weft detecting members are used a de vice of this general type being shown in my prior application No. 413,089, filed August 2,1915.

It is the object of my present invention to adapt this type of weft detecting mechanism to a loom in which the actuator which con trols the transfer mechanism has a definite and unchanging cycle of movement.

With this object in view one feature of my invention relates to the provision of a connecting member through which the actuator may control the transfer mechanism, and to the further provision of weft-controlled devices for placing said member in operative or inoperative position.

In the embodiment of my invention herein shown, the connecting member rests upon. a support which is movable to carry said member into operative and inoperative positions, said support being moved in one direction by the actuator and in the opposite direction by a spring or its equivalent. The spring-actuated movement of the support is under the control of the several weft detectors and can only occur when all of the detectors engage a sufiicient weft supply in the active shuttle, said detectors being thereby moved out of the path of an arm connected to and movable with said support.

Other features of my invention relate to certain arrangements and combinations of parts which will be hereinafter described and more particularly. pointed out in the appended claims.

A preferred form of my invention and a modification thereof are shown in the drawings in which Figure 1 is a top plan view of the preferred form of my invention; Fig. 2 is a front elevation of the detecting mechanism; Fig. 3 is a side elevation of the mechanism shown in Fig. 2; Fig. 4 is a side elevation partly in section taken along the line 4.1 1n Fig. 1; Fig. 5 is a perspective view of the movable support for the connecting mem ber, and Fig. 6 is a perspective view of a modified form of operating mechanism.

Referring to Fig. 1, a portion of the loom frame is indicated at 10, supporting the usual filling fork 1.1, mounted upon the filling fork slide 12. When the filling fork indicates a break in the filling, it engages a reciprocating actuator 13 (Fig. i) and is moved forward. (or to the right in said figure). In its forward movement it engages an arm 11 secured to a rock shaft 15 mounted in bearings on the frame 10 and connected to the transfer mechanism. These parts constitute no part of my invention and may be of any usual or preferred form.

A. connecting member 16 is pivoted to the arm 14 at its upper end and the free end of the connecting member is provided with a notch 16 adapted to engage a stud 17 carried by the actuator 13. The connecting member 16 is vertically positioned by a supporting arm 18 secured to a horizontal shaft the spring being secured to the bearing 21 and the other end being fixed in a collar 23 adjustably mounted upon the shaft 19. The tension of the spring is such that it tends to move the shaft 19 in the direction of the arrow a in Fig. 41.

The supporting arm 18 (Figs. 4 and 5) is provided with a straight portion 18 engaging the connecting member 16 and with a cam-shaped extension 18 engaging the stud 17, as the actuator is moved rearwardly. When thus engaged, the notch 16 of the connecting member is positioned for engagement by the stud 17 in its succeeding forward movement. Under normal conditions the spring 22 will cause the camshaped projection 18 of the supporting arm to continuously engage the stud 17 thus raising the arm as the stud moves forward and carrying the notch 16* of the connecting member above the path of the stud 17. The 7 and the connecting member when the weft in the active shuttle becomes substantially exhausted.

Referring to Figs. 1, 2 and 3, a short shaft or stud 25 is fixed in the lower portion of the bearing bracket 21, extending laterally therefrom. An arm 26 is clamped to the stud 25 and is both angularly and longitudinally adjustable thereon. The arm 26 is provided with a second short shaft or stud 27 secured in its upper end, and a weft detector stand or support 28 is adjustably clamped to the stud 27. The several adjustable connections above described permit the weft detecting mechanism to be accurately located and firmly held in any desired position.

A series of separate and independently movable weft detectors 30 are mounted to slide freely in the stand 28, said detectors being each bent at its front end to form an upwardly extending portion 30 and a rearwardly extending portion 30 The portions 30 are'engaged by a pivoted plate 31 (Fig. 2) mounted upon a rod 32 and pressed against the detectors by a spring 33. The detectors 30 are thus normally maintained in the position shown in Figs. 1 and 3.

The arm 35 (Fig. 2) is adiustably clamped to the left-hand end of the shaft 19 and a bar 36 is secured to the end of the arm 35, said bar being adjustable in a slot 35 (Fig. 3) in said arm, The arm 35 and the bar 36 move upwardly in unison with the supporting arm 18 previously described and the path of movement of the bar 36 is such that it will engage the portions 30 of the weft detectors when they are in the normal posit-ion shown in Fig. 3. Such engagement prevents further movement of the shaft 19 and the supporting arm 18 by the spring 22, thus retaining the notch 16 of the connecting member 16 in the path of the stud 17. Upon its next forward movement, the stud 17 engaging the notch 16 will move the arm 14: and partially rotate the shaft 15, thus placing the transfer mechanism in operation.

lVhile my improved weft detecting mechanism may be used with any suitable form of weft carrier or bobbin, it is particularly designed for use in combination with a bobbin of the form shown and described in my prior application Ser. No. 13,089 above referred to. The bobbin. therein described is provided with a plurality of small holes extending through the wall of the cylindrical barrelof the bobbin and so positioned that one or more of the weft detectors 30 will. be alined with and will pass through these holes as soon as the weft is sufficiently exhausted to, uncover the holes. Such detectors will remainin their rearward position, as shown in Fig. .3, thus preventing, the spring-actuated movement of the shaft 19 and supporting arm 18 by which the connecting member is normally moved to inoperative position. Until the weft supply is substantially exhausted, all of the weft detectors will be moved forwardly by the weft carrier as the lay beats up, thus clean ing the bar 36 and permitting unobstructed movement of the shaft 19.

In the modification shown in Fig. 6 the operation is substantially the same as that already described, but the details of the mechanism are slightly changed. The arm 14, the shaft 15, and the stud 17 are positioned and oaerated substantially as previously descri ed. The connecting member 160 merely differs in outline from the member 16 and is provided with a notch 160 adapted to engage the stud 17. The supporting arm 180 is formed as an integral part of a lever 181 pivotedupon a stand 182 upon the bearing bracket 210. A spring 220 is provided for raising the supporting arm 180 and the lever 181 is formed with an extension 185 positioned to engage the portions 30 of the weft detectors as previously described. A further description of the operation of this modification is considered unnecessary.

Having thus described my invention it will be evident that other changes and modifications can be made therein by those skilled in the art without departing from the spirit or scope thereof as set forth in the claims, and I do not wish to be otherwise limited to the details herein disclosed.

What I claim is 1. A weft detecting mechanism for looms having, in combination, a transfer mechanism, an actuator, a connecting member through which said actuator may set said transfer mechanism in operation, said member being normally in operative position, means to move said member to inoperative position relatively to said actuator, means to thereafter restore said member to operative position, and a plurality of separate weft detectors each effective to prevent the movement of said member to inoperative position whenever said detector is. not engaged by a suflicient weft supply in the active shuttle,

upon each alternate forward beat of the lay.

2. A weft detecting mechanism for looms having, in combination, a transfer mechanism, an actuator, a connecting member. through which said actuator may set. said transfer mechanism in operation, a support for said member movable by said actuator mto operative position, means efiective to withdraw said support, and a. plurality of weft detecting devices, each effective to independently control the movement of said support by said means.

A Weft de c ing mech nism r l om having, in combination, a transfer mechanlsm, an actuator, a connecting member through which said actuator may set said transfer mechanism in operation, a support for said member movable in one direction by said actuator to place said member in operative position, means for moving said support in the opposite direction, and a plurality of separately movable weft detectors, said detectors being moved out of the path of said arm by engagement with a suflicient weft supply to the active shuttle.

4. A weft detecting mechanism for looms having, in combination, a transfer mechato engage said actuator, a support for saidmember, means to move said support, from operative position, and means to thereafter a restore said support to operative position, said first mentioned means being rendered inoperative whenever any one of said detectors indicate substantial exhaustion of Weft in the active shuttle.

6. A weft detecting mechanism for looms having, in a combination, a plurality of separate weft detectors, an actuator, a transfer mechanism having a member normally positioned to engage said actuator, a pivoted support for said member movable in one direction by said actuator and a spring for moving said support in the opposite direction, said support having an arm connected therewith and movable adjacent said detectors, said arm being engaged by one or more of said detectors upon substantial exhaustion of weft in the active shuttle, Whereby operation of said spring to move said support is prevented.

In testimony whereof I have hereunto set my hand.

EPPA H. RYON.

Oopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

Images