US2034871A - Heddle frame - Google Patents

Description

March 24, 1936. J J, KAUFMANN HEDDLE FRAME Filed Sept. 13, 1954 Jam Patented Mar. 24, 1936 HEDDLE FRAME John Jacob Kaufmann, Elkins Park, Pa., assignor to Steel Heddle Manufacturing Company, Philadelphia, Pa., a corporation of Pennsylvania Application September 13, 1934, Serial No. 743,793

10 Claims.

My invention relates to heddle frames for looms, and more particularly to improved means, in a heddle frame of the usual type, for supporting the heddle bars intermediate their ends and for positively locking the heddle bars in fixed position.

The principal object of my present invention is to provide, in a heddle frame, improved means for supporting the heddle bars intermediate their ends and for locking said bars against undesirable motion or displacement, yet permitting the bars to be quickly and conveniently mounted in the frame and removed therefrom when desired.

My present invention contemplates an improved form of heddle bar supporting device which may be readily adjusted with respect to the top and bottom rails of the frame, so that the heddle supporting bars will be properly positioned and the heddles will not bind thereon.

My present invention further contemplates an improved form of supporting device in which a positive locking of the heddle bars with respect to the frame is provided, whereby wear of the contacting surfaces of the bars and the support will be reduced to a minimum.

My present invention further contemplates certain improved details of construction, whereby the device will be rendered more durable and eflicient. 7

Other objects of my invention will appear from the specification and claims.

The nature and characteristic features'of my invention will be more readily understood from the. following description, taken in connection with the accompanying drawing forming part hereof, in which:

Figure 1 is an elevational view of a heddle frame provided with heddle bar supporting devices embodying the main features of my present invention;

Fig. 2 is an enlarged fragmentary side elevation, partly in section, of a portion of the heddle frame structure, with one of the supporting devices embodying the main features of my present invention shown in connection therewith, the parts being shown in the positions assumed prior to the efiecting of the positive locking of the heddle supporting bars;

'Fig. 3 is a view similar to Fig. 2, the parts being shown in the positions assumed for positive locking of the heddle supporting bars;

Fig. 4 is an enlarged section taken approximately on the line l4 of Fig. 2, illustrating one of the supporting devices in positive locked position;

Fig. 5 is a perspective view of a bolt member forming a component part of the device, the other parts being removed therefrom;

Fig. 6 is an enlarged vertical central section U scription and drawing herein contained are i1- lustrative merely, and that various modifications and changes may be made in the structure disclosed without departing from the spirit of my invention.

Referring to the drawing, the heddle frame there shown comprises top and bottom rails l0, connected at their ends by means of the side members ll. Extending from end to end of the heddle frame, and near the top and bottom rails thereof, are the heddle bars l2, upon which the heddles l3 are mounted in the customary manner.

The heddle bar supporting devices l4 comprising the present invention are mounted at suitable locations on the inner edges of the top and bottom rails l0. Each of these devices I4, as shown in the drawing, includes a bolt member l5 having a shank, the end of which is threaded at I6 in a manner similar to that of an ordinary wood screw, with the exception that the same,

is not tapered over as large a portion of its length. The bolt member 15 is also provided with a second threaded portion H, for purposes to be hereinafter set forth. The threads on this part are preferably of the form ordinarily used for machine screws.

A head portion I8 is also provided on the bolt member 15, and is preferably made by flattening and spreading the material of the rod from which the bolt member is formed. The flattened head member l 8 is provided with one or more shoulders I 9, near one end thereof. In the drawing two such shoulders are shown.

On each side of the flattened head portion I8 of the bolt member I5 there is mounted a plate 20, which may be secured to said bolt member by rivets 2| or any other suitable fastening means. The plates 20 are provided with recesses 22, these recesses being of greater width than the Width of the heddle supporting bars which are adapted to be mounted therein. The surface of the plates 20 on which the heddle supporting bars I2 rest are formed as continuations of the corresponding surfaces of the head portion l8 of the bolt member l5, and also of the shoulders l9 thereon.

A slidable clamping member 23 is mounted on the bolt member I5, and is provided with vertically extending legs 24 which straddle the head portion 18 of the bolt member l5. The leg porrions 24 of the slidable clamping member 23 are guided between the plates 26 which are secured to the head portion is of the bolt member IS. The lower end of each of the leg portions 24 is provided with a lip 25, which is adapted to extend down over the outside of the heddle supporting bar l2.

A positive locking member 26 is also mounted on the threaded portion I! of the shank of the bolt member l5. The member 29 may take the form of a nut with an internally threaded portion 21 for engagement with the threaded portion I! of the shank of the bolt H3. The member 26 may be knurled, roughened, or otherwise shaped or deformed onthe circumferential face thereof, to provide a suitable gripping surface. The face of the member 26 is preferably recessed, as at 23.

A conical telescoping coil spring 29 is mounted on the shank of the bolt member l5, and is interposed between the positive locking member 26 and the slidable clamping member 23. One end of the spring 29 bears against the horizontal portion 30 of the slidable clamping member 23, and the other end thereof is received within the recess 28. It will be noted that the depth of the recess 28 is greater than the thickness of the wire employed in making the spring 29, so that upon compression the spring will be completely encompassed within the space defined by the rim 3| of the recess 28 and the horizontal portion of the slidable clamping member 23. The rim portion 3| of the member 25 may thus be brought to bear directly upon the slidable clamping member 23.

It will be noted that with the positive locking member 26 in the position shown in Fig. 2, the slidable clamping member 23 may be moved against the force of the coil spring 2.) to permit the insertion of a heddle bar 12. The action of vthe spring 29 on the slidable member 23, with its lip 25 in engagement with the heddle bar l2, then securely holds said bar against the shoulder IQ of the shank of the bolt I5, and against the shoulders provided by the recesses 22 of the plates 26. The positive locking member 26 is then turned, and the spring 29 is compressed until the rim 3| is in firm contact with the horizontal face 30 of the slidable clamping member 23. This provides a positive lock of the heddle bar with respect to the support, and vibration or shocks will not have any appreciable effect in loosening the locking means. Movement of the bar with respect to the support, with undesirable wear, is thus prevented.

The removal of the bar may be readily effected by turning the positive locking member 26 in the opposite direction from that required for locking.

While the invention has been described for a double heddle bar support, it will of course be understood that it may be applied equally well to a single heddle bar support, in which case the slidable clamping member 23 is provided with but one lip 25 and the support has only one shoulder IQ for receiving the heddle bar.

I claim:

1. In a loom heddle frame, a heddle bar upon which the heddles are mounted, a support for the heddle bar intermediate its ends, said support having a shoulder for receiving the heddle bar, a member slidably mounted on the support for engagement with the heddle bar thereby to hold it in position on the support, a telescoping spring mounted on said support and having a portion bearing against the member to urge it toward, the heddle bar, and a locking nut threaded on said support and provided with a recess in which said spring bears,

2. In a loom heddle frame, a heddle bar upon which the heddles are mounted, a support for the heddle bar intermediate its ends, said support having a shoulder for receiving the heddle bar, and means for holding said heddle bar in position on said support, said means including a member slidably mounted on the support for engagement with the heddle bar, a telescoping spring and means for holding said heddle bar in position on said support, said means including a member slidably mounted on the support and adapted to engage the heddle bar, a coil spring surrounding said support and having a portion bearing against the member to urge it toward the heddle bar, and a locking nut threaded on said support and adapted to be advanced thereon to compress said spring and urge said member to heddle bar locking position.

4. In a loom heddle frame, a heddle bar upon which the heddles are mounted, a support for the heddle bar intermediate its ends, said support having a shoulder for receiving the heddle bar, a member slidably mounted on the support and adapted to engage the heddle bar thereby to hold it in position on the support, a locking nut thread-,

ed on said support and provided with a recess, and a spring surrounding said support and bearing on said member and in the recess of said nut, said nut being adapted to be advanced on said support to urge said member to heddle bar locking posi-,

tion and to bear against said member.

5. In a loom heddle frame, a heddle bar upon which the heddles are mounted, a sup-port for the heddle bar intermediate its ends, said support having a shoulder for receiving the heddle bar, and means for positively locking said heddle bar against said shoulder including a member slidably mounted on the support for engagement with the heddle bar, a locking member threaded on said support and adapted to be advanced thereon to hold said member in heddle bar locking position, one of said members being provided with a recess, and a spring adapted to be compressed into said recess.

6. In a loom heddle frame, a heddle bar upon which the heddles are mounted, a support for the heddle bar intermediate its ends, said support having a shoulder for receiving the heddle bar, and means for positively locking said heddle bar against said shoulder including a member slid-- ably mounted on the support for engagement with the heddle bar, a locking member threaded on said support and adapted to be advanced thereon to contact said slidably mounted member, said locking member being provided with a recess, and a spring adapted to be telescoped into said recess.

7. In a loom heddle frame, a heddle bar upon which the heddles are mounted, a support for the heddle bar intermediate its ends, said support having a shoulder for receiving the heddle bar, and means for holding said heddle bar in position on said support, said means including a member mounted on the support for engagement with the heddle bar, a spring mounted on said support and having a portion bearing against said member to urge it toward the heddle bar, and a locking member adjustably mounted for longitudinal movement on said support to locking position, said locking member being provided with a recess in which said spring is received.

8. In a loom heddle frame, a heddle bar upon which the heddles are mounted, a support for the heddle bar intermediate its ends, said support having a shoulder for receiving the heddle bar, and means for holding said heddle bar in position on said support, said means including a member mounted on the support for engagement with the heddle bar, a spring mounted on said support and having a portion bearing against said member to urge it toward the heddle bar, and a locking member adjustably mounted for longitudinal movement on said support to locking position, one of said members being provided with a recess in which said spring is received.

9. In a loom heddle frame, a heddle bar upon which the heddles are mounted, a support for the heddle bar intermediate its ends, said support having a shoulder for receiving the heddle bar, and means for holding said heddle bar in position on said support, said means including a member mounted on the support for engagement with the heddle bar, a spring mounted on said support and having a portion bearing against said member to urge it toward the heddle bar, and an adjustable member mounted on said support for movement to heddle bar locking position, said adjustable member being provided with a recess in which said spring bears.

10. In a loom heddle frame, a heddle bar upon which the heddles are mounted, a support for the heddle bar intermediate its ends, said support having a shoulder for receiving the heddle bar, and means for holding said heddle bar in position on said support, said means including a member mounted on the support for engagement with the heddle bar, a spring mounted on said support and having a portion bearing against said member to urge it toward the heddle bar, and an adjustable member mounted on said support for movement to heddle bar locking position, one of said members being provided with a recess in which said spring bears.

JOHN JACOB KAUFMANN.

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