US1935240A - Pattern device for hand looms - Google Patents

Description

Nov. 14, 1933. H, FIDERER PATTERN DEVICE FOR HAND LOOMS Filed July 16, 1931 2 Sheets-Sheet l W I I I I I I l I I I I I I L Inventor:

Heinrich Fide er NOV. 14, 1933. HDERER PATTERN DEVICE FOR HAND LOOMS Filed July 16, 1931 2 Sheets-Sheet 2 Inventor'- Patented Nov. 14, 1933 T OFFiCE PATTERN DEVICE FOR. HAND LOOMS Heinrich Fiderer, Munich-Gladbach, Germany,

assignor toEduard Gillis, Beuthen, 0.-S., Germany Application July 16, 1931, Serial No..551,232, and

r in Germany July 26, 1930 Claims. (01. 139-33) This invention relates to a pattern loom, the pattern device of which is of simple construction and manipulation, and in which the drive of the pattern device effects at the same time the taking 5 up of the fabric and the regulating of the closeness of the Weft threads. This is attained by actuating either manually or mechanically the frame on which a pattern frame is' mounted, the pattern frame having easily interchangeable abutments for the shaft lifting levers which operate the healds.

The movements of the frame are utilized at the same time for driving the cloth beam andfor thereby determining the closeness of the weft threads. Instead of the pattern frame a moving endless bandmay be used; by, the easily interchangeable abutments on which the heald operating levers are situated.

Up to the present time fabrics with. figured patterns had to 'be produced by skilled expert weavers, this involving great expenses in material and wages, with this invention it is possible to produce such samples with the aid" of the new method and of the new device with least material and by unskilled labour.

by way of example in the accompanying drawings in which:- r

Figure 1 illustrates diagrammatically the whole loom in vertical longitudinal section. I

Fig. 2 is. a vertical section on'line A -B of Fig. 1. r

Fig. 3 is a horizontal section on line C-D of Fig.2. H

Fig. 4 shows a portion of the frame andof the stencil in elevation on larger scale.

Fig. 5 shows the pattern band and one abutment in vertical longitudinal section inengaged beating up position.

Fig. 6 is a similar view to-Fig. 5 indisengaged idle running position.

Fig. 7 is a'front elevation of the frame.

Fig. 8 shows the controlling of the cloth beam by the. frame.

Fig. 9 is an axial part section through the. driving mechanism effecting the engaging and disengaging of the cloth beam.

Fig. 10 is a top plan view of Fig. 9.

. Fig. 11 illustrates the actuating of the shaft 50 lifting levers by the patterns of a pattern band. In Fig. 1 the warp threads move from the cloth beam 1 through healds 2 and through the reed 3 to the piece beam 8, on which the-finished fabric 7 is wound, the warp threads sliding over the back rail and breast beam 4. The shafts 2 are lifted Embodiments of the invention are illustrated and lowered by two-armed levers 9, which pass through a stationary slotted grid 46. In front of the grid 46 an actuating frame 7 is arranged so that it can ascend and descend; The movement can be controlled by hand and foot. The ends of the levers 9 extend through the frame.

A slotted actuating frame 6 with vertical slots registering with the slots of the guide grid 46 are adapted to'carry abutments in the several slots for moving these levers and the heald shafts C5 hingedly-connected with the same in accordance with the desired design. Abutments 13 are arbitrarily positioned in the slots of the pattern frame 6 by a'set screw 13', for example. The flange 14 of the pattern frame rests on the upper transverse bar 10 of the frame '7. In order that the pattern frame 6 be positively driven downward, it must be coupled to the downwardly moving frame 7. This is done by coupling pins 15 carried by bar 10 of frame 7,v which pins are normally urged outwardly by springs 16 so as to permit ready insertion of the pattern frame. With the pattern frame in place on bar 10,. and as the. frame '71s moved downwardly, the pins 15are' spread inwardly by push members llengaging in a fixed guideway 17, so that these pins bear against the side of the flange 14 of the pattern frame and so" carry the pattern frame downwardly; At the downward movement of" the frame the inserted abutments 13. of the pattern frame 6 strike against the corresponding lever ends and raise the corresponding healds'with the, warp threads so that the weft 'thread can be picked. I 1

Instead of the pattern frame 6 an automatically moved endless'stencil band 18 (Fig. 5) may be used for actuating the shaft levers. This band, consisting of links, is guided above'and below over prisms 19, for instance of square cross section, and arranged in inclinedposition. Holes 21) are arranged in the band at uniform distances apart and designed to hold buttons 21 having set off shanks 22 in accordance with the weave corresponding to the design. When passing over the upper prism 19, the buttons 21 strike against pins 23 and arranged in the frame 7, which is in raised position, said pins *23 being pushed back in opposition to the'action of spiral springs 24 such a distance that pawls 25 on the frame '7 engage with notches 26 ofthe pins 23 and securely hold the same in this position, in which they strike, when the frame is descending, against the corresponding lever ends of the shafts and thereby lift the same. I

'At the upward movement the ends 38 of tied the pawls 25 strike against stationary abutments 27 and make the pawls oscillate until they disengage from the pins 23, 26 so that these pins jump forward under the action of the springs 24 and return into the initial position. When the frame is descending the ends 38, when encountering abutments 27, can yield in upward direction as they are hingedly fixed on the pawl levers 25 and pressed by springs 39 against the ends of the pawl levers.

The pattern band may, however, be arranged as shown'in Fig. 11 so that the patterns directly actuate the shaft levers. With this object in view the upper cylinder or prism 40 over which the pattern band runs is rotatably mounted by means of pins 42 between levers 41 and driven intermittently. When the levers ll oscillate in down- Ward direction the patterns 43, which, together with the band portion (card) 44 carrying them, are pressed against the corresponding face of the prism, strike against the ends of the shaft levers and threby actuate the corresponding shafts.

With the-forms of the invention shown in Figs. 1, 5 and 11, the intermittent rotation of the piece beam 8 and thereby the regulating of the closeness of the weft threads, is derived from the movement of the frame. With this object in view an abutment pin 28 is arranged on a rack 29, shiftable in vertical dirction, and raised by the lower transverse rod 11 of the frame '7 when the same is moving upwards, whereas an abutment pin 31 shiftable in a slot 33 .of the rack and adapted to be secured in the adjusted position, is lowered by the upper transverse bar 10 of frame '7 when the same is being lowered. A part rotation is imparted to a worm 36 and worm wheel '37 of the piece beam 8 when the rack is moving downwards and through the intermediary of a toothed wheel and pawl 33 and ratchet wheel 34 through a shaft 35, the amplitude of this part rotation adapted to be altered by adjusting a pin 31.. When the frame is moving upward the 1 toothed wheel .32 is rotated by the pin 28., the

' a toothed segment would be carried by. arms 41,

for example, and would operate a gear wheel 32 and cooperating mechanism for rotating the piece beam 8. The only difference between the rack 29 and the toothed segment would be that rack 29 is straight and moves in .a straight path, while the segment would be curved and would move in a curved path parallel to the curved arrow in Fig. 11.

I claim:

1. A pattern device for hand looms comprising in combination, a plurality of pivoted levers for controlling the healds, a reciprocable pattern frame provided with arbitrarily positionable elements adapted to engage and operate said levers, means for reciprocating said pattern frame, and means for advancing the piece beam with each reciprocation of the pattern frame.

2. Apattern device for hand looms, comprising in combination shaft levers, a frame adapted to carry out a reciprocating movement in vertical direction, an endless pattern band behind said frame, pattern buttons interchangeably mounted on said pattern band, spring controlled abutment pins shiftable in longitudinal direction on said frame adapted to be pushed back into the path of said shaft levers by said abutment buttons when said frame is moving upwards, a pawl arrangement for locking said abutment pins in the operative position, and stationary abutments for releasing said abutment pins.

3. A pattern device for hand looms, comprising in combination shaft levers, a guide prism, an endlesspattern guided over said prism, an axle of said shaft levers, two levers oscillatably mounted on said axle and carrying said prism.

4. A patterndevice for hand looms, comprising in combination shaft levers, a frame adapted to carry out a reciprocating movement in vertical direction, an endless pattern band behind said frame, pattern buttons interchangeably mounted on said pattern band, spring controlled abutment pins shiftable in longitudinal direction on said frame adapted to be pushed back into the path of said shaft levers by said abutment buttons when said frame is moving upwards, a pawl arrangement for'locking said abutment pins in the operative position, stationary abutments for releasingsaid abutment pins, a piece beam, a driving mechanism operated from said frame adapted to rotate said piece beam, and a ratchet wheel and pawl in said mechanism adapted to make said driving mechanism run idle when said frame is running in one of the two directions.

5. In a pattern device as specified in claim 4, in combination with said ratchet mechanism and said piecebeam, a stationary abutment, an adjustable abutment on said rack, a toothed wheel cooperating with said rack, a worm adapted to be rotated by said toothed wheel, and a worm wheel adapted to rotate said piece beam.

HEINRICH FIDERER.

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