US2085455A - Loom - Google Patents

Description

H. SIGEL LOOM June 29, 1 93 7.

Filed March 18, 1936 lNVE TQR ATTO RNEY5 Patented June 29 I937 UNITED STATES PATENT oFFicE LOOM Application March 18, 1936, Serial No. 69,442 In Germany March 23, 1935 2 Claims. (Cl. 139-191) This invention is concerned with looms which are provided with a divided or two-part reed and has been developed in connection with ribbon looms of that type. In such looms there is commonly provided a fixed shuttle guide and the shuttle travels between the reed and the heddles. Because of the relatively slight friction of the two-part reed on the warp threads such looms as heretofore constructed can be operated at great speed, even as high as 1000 picks per minute, but because the two-part reed in such looms has only .a swinging movement upward and downward heavy fabric, in which the weft thread must be strongly beaten, cannot be produced.

This disadvantage of looms provided with a the Weft thread is strongly beaten in. A loom provided with a two-part reed, which not only has the upward and downward swinging movement as heretofore but has imparted to it an additional beating movement in accordance with the present invention, is capable of a high output of heavy fabric.

The invention will be more fully explained hereinafter with reference to the accompanying drawing in which several embodiments are illustrated, and in which:

Figure 1 is a. view, diagrammatic and partly in section on a plane indicated by the line of I---! of Figure 2, of so much of a loom equipped with the present invention as is necessary to enable the application of the invention thereto to be understood.

Figure 2 is a plan view, partly in horizontal section, of some of the parts shown in Figure 1.

Figure 3 is a detail view, in vertical section on a larger scale, of some of the parts to be referred to.

Figures 4 and 5 are partial views, similar to Figure l, but showing different embodiments of the invention.

In the embodiment of the invention illustrated in Figures 1, 2 and 3 the heddles by which the warp threads 2-2 are moved to form the shed are shown at I, l 7

The two-part or divided reed is shown as consisting of an upper part 3 and a lower part 3 the two parts being mounted upon a common carrier 4 and opposed and offset somewhat with respect to each other to form between them a 55 narrow space, as at [9, to permit the placing ,of the weft thread as hereinafter explained, the

parts of the reed being always in engagement with the warp threads of, both sides of the shed. The reed carrier 4 is mounted to swing upward and downward upon a spindle 5 and has an arm it which is slotted at its lower end, as at H, to receive adjustably a pin roller [6 which engages a cam groove E5 in the cam member i4 mounted on a shaft [3, suitably supported in the loomvframe 6 and rotated by any suitable means.

The spindle 5 is carried by two arms 26 on a sleeve 2d which is mounted on a spindle 25 supported in the loom frame. An arm 23 extended downward from the sleeve M has at its lower end a slot 22 to receive adjustably a pin roller 2| which bears on the outer cam surface 20 which is formed on the cam member in which the cam groove i5 is also formed. A spring 28, seated in the loom frame, as at 21, and centered upon a pin 29 on the arm 23, serves to press the pin roller 2! upon the cam surface 20 whereby, due to the conjoint action of the cam surface and the spring 28, the spindle 5 is swung to and fro in a substantially horizontal direction. The reed carrier 4 and two- part reed 3, 3 therefor have a to and fro movement in a substantially horizontal direction and the reed assumes the different positions indicated in Figure 3 by broken lines.

In the construction illustrated there is supported in the loom frame 6, as shown in Figure 2,

a curved shuttle guide in which moves the shuttle carrier 8 on which is mounted the weft bobbin lll. The shuttle carrier is actuated in the usual manner by devices which form no part of the present invention and need not be shown or described herein. In the movement of the shuttle the shuttle bill ll lays the weft thread l2 between the warp threads 2 which form the shed, the weft thread in the movement of the shuttle passing through the space H! between the two parts of the reed.

In the operation of the device shown in Figures 1, 2 and 3, as the shuttle carrier 8 and shuttle 9 are moved with the bobbin I0 through the shed the shuttle bill ll lays the weft thread I2 behind the lower part 3 of the reed, so that the weft thread assumes the position indicated at I2 in Figure 3. In the then ensuing downward movement of the reed 3, 3 effected by the cam groove [5 as described above, the weft thread slides through the gap i9. In the then ensuing upward movement of the reed the weft thread assumes a position in front of the lower part 3 of the reed and movement as before.

at this moment the frame consisting of the arms 23, 26 is swung in a clockwise direction, as shown in Figure 1, by means of the cam surface 20, so that the reed moves to the right and the weft thread is beaten or pressed firmly by the lower part 3 of the reed into the position indicated at I2 in Figure 3. In the continued movement of the cam member M the reed is again moved to the left, as shown by the dotted lines in Figure 3. It will be understood that the shape of the cam groove I5 and the shape of the cam surface can be varied to produce such movement of the reed as may be required in the production of the fabric being woven.

In the embodiment of the invention illustrated in Figure 4 the carrier for the divided reed 3|,

3| generally similar to the reed carrier 4 of V on which the reed carrier is mounted is itself carried by a horizontally movable slide 3'1 which is mounted in a guide 38 and is formedwith a rack 40 for engagement by a toothed sector 4|. The latter is mounted on a spindle 42 and has an arm 43 which carries a roller 44 bearing on the cam surface 46 of the cam member 36. A spring 45serves to press the roller 44 upon the cam surface 46. V

In the operation of the devices shown in Figure 4 the reed carrier 30 is swung upward and downward through the coaction of the arm 32 and the cam groove 34 and the reed 3|, 3| thereby has imparted to it the upward and downward The toothed sector 4| and the arm 43 are caused by the cam surface 46 ,with the cooperation of the spring 45 to swing on the spindle 42, so that the slide 31 receives a to and fro movement in a horizontal direction,

effected positively. The carrier 41 for the reed 48, 4|! swings upon the spindle 49 and has an arm 50 with the pin roller 5| which engages the cam groove 52 of the cam member 54. The

spindle 49 on which the reed carrier swings is supported by an arm 55 of a bell crank lever 55,

56, which is itself mounted on a spindle 5B supported by the loom housing 51. The arm 56 carries a pin roller 59 which engages a cam groove 6|] in the cam member 54.

The operation of the embodiments of the invention shown in Figures 4 and 5 will be understood without further description. I

Various changes in details of construction and arrangement can be made to suit different conditions of use and the invention therefore is not restricted to the particular embodiments shown in the drawing, except as pointed out in the accompanying claims.

I claim as my invention:

1. In a loom, the combination of a divided reed, the two parts of which are opposed to each other and are offset to permit the placing of the weft thread between them, a reed carrier mounted to swing on a horizontal axis and on which both parts of the reed are mounted for constant engagement with the warp threads of both sides of the shed, a movable support for the axis of the carrier, an actuating arm in fixed relation with the carrier, an actuating arm in operative relation with the support, and a cam member having two separate cam surfaces, the actuating arm of the carrier being in operative engagement with one of the cam surfaces of the cam member and the actuating arm of the support being in operative engagement with the other cam surface of the cam member.

2. In a loom, the combination of a divided reed, the two parts of which are opposed to each other and are offset to permit the placing of the weft thread between them, a reed carrier mounted to K swing on a horizontal axis and on which both parts of the reed are mounted for constant engagement with the warp threads of both sides of the shed, a support on which the carrier is mounted and which is itself mounted to swing on a horizontal axis, an actuating arm in fixed relation with the carrier, an actuating arm in operative relation with the support, and a cam member having two separate cam surfaces, the actuating arm of the carrier being in operative engagement with one of the cam surfaces of the cam member and the actuating arm of the support being in operative engagement with the other cam surface of the cam member.

' HERMANN SIGEL.

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