US712822A - Electrical warp stop-motion. - Google Patents

Description

m. 7|2,s22. v PatntedNov. 4,1902.

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ELECTRICAL WARP STOP MOT|DN.

(Application filed 1541.12, 1901.)

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"No. 712,822 Patentd' Nov. 4, I902.- 1 v. MACKU.

ELECTRICAL WARP STOP MOTION.

' (Application filed. Jan. 12, 1901.)

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V. MACKU.

' ELECTRICAL WARP STOP MOTION.

[Application filed Jan. 12, 1901.

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UNITED STATES l ATENT OFFICE.

VINCENZ MAOKU, OF BRl lNN, AUSTRIA-HUNGARY.

ELECTRICAL WARP STOP-MOTION.

SPECIFICATION forming part of Letters Patent No. 712,822, dated November 4:, 1902.

Application filed January 12, 1901- Serial No. 43,059. (No model.)

To all whom it may concern.-

Be it known that I, VINCENZ MAOKU, engineer, residing at Neugasse 113, Briinn, in the Empire of Austria-Hungary, have invented new and useful Improvements in Electrical Warp Stop-Motions; and I do hereby declare the following to be a full, clear, and exact description of the same.

The present invention relates to an electric warp controlling device for looms characterized by a peculiar construction of the healdheads and by the arrangement of auxiliary bars below and above the shaft-bars, while the remainder of the construction thereof is Well known. In the accompanying drawings a loom provided with such'warp-controlling device is, shown, wherein Figure 1 is a front view thereof; Fig. 2, 'a view, on'an enlarged scale, of the apparatus A eventually influenced by the current; Fig. 3, a front view of Fig. 2; Fig. 4, a front view of part of the loom; Fig. 5, a diagram of the apparatus A, of the lathe,-and of the strapfork; Fig. 6, a detail of Fig. 5, on an enlarged scale; Figs. 7and 8, the heald-frames in two different positions; Fig. 9, a profile view of a heald and of the shaft-bars and the auxiliary bar in the position they are in when the warp-thread is whole; and Fig. 10, the same View in the position when the warp-thread is broken or slack, when the heald rests against the shaft-bars and at the same time against the auxiliary bar.

The apparatus A (shown in Figs. 2 and 3 on an enlarged scale) is fixed to the disengaging-fork 2. It consists of a round disk 3, provided with two slots 4. Through these two slots pass the lateral shanks of an armature 6. The latter is journaled pivotally around the screws 7, which pass through its lateral shanks and cross through the slot, and when the armature-coils S are not energized it assumes the position shown in full lines in Figs. 1 and2; because of the fact that the rear shank 5 is provided with a reinforcement 9, the weight ofwhich forces the armature into an inclined position. The free end of the band-fork 11 passes through the slot 10 of the disengaging-fork 2, which is rotatable around a bolt 12, arranged in the frame in the well-known manner. The disengagingfork 2 is guided in the slot 13 of the plate 14,

'shown in Fig. 1.

and in that slot is arranged a catch 15, against which the disengaging-fork 2 rests. While the fork 2 rests against the catch, (see Figs. 5 and 6,) the position of the band-fork 11 is such that the driving-band presses upon the solid pulley 16, so that the loom works.

As can be seen from Fig. 1, a pin 18 is fixed upon the lathe 17. At each beat of the lathe 17 the pin 18 assumes a position above the inclined armature 6, reaching as far as the point indicated by the figure 19. Then the coils 8 are energized by an electrical current, the armature 6 is attracted and brought in the position shown by dotted lines in Fig. 2. For clearness sake this horizontal position is not The result is that under these circumstances the pin 18 strikes the reinforcing-piece of the rear shank 5 0i the armature 6, thereby'forcing the latter to the left relatively to the position shown in Fig. 1. As the armature is rigidly connected with the disengaging-fork 2, the latter will move at the same time inthe direction of the arrow II, Figs. 5 and 6. Thereby the disengaging-fork will slip from the catch 15 and by its springpower bebrought as far as the second extremity of the slot 13. The end of the bandfork 11, which is journaled in the slot 10 of the disengaging-fork 2, follows that motion, so that the said band-fork turns around the bolt 12 and with its other fork-shaped extremity pushes the band from the solid pulley upon the'loose pulley, thereby causing the loom to stop.

From the above description it will be seen that when the armature-coils 8 are energized by the current, and thereby the armature attracted or brought in the position shown in dotted lines in Fig. 2, the loom stops. Now the present invention relates to an arrangement of the healds and heald-frames of looms whereby when the warp breaks or gets slack an electric current is closed, which causes a current to flow through the armature-coils 8. To this effect the healds d have heads k,whicl1 finish in a point at one side, while their upper and lower sides form straight surfaces f. The heald-frames rhave besides the two usual shaft-bars a and b and auxiliary bar 0 under the latter, I). Moreover, next to the lateral shanks r of the heald-frames 1" iron Wires m are fixed to the frame 7'. The shaft-bars a and b are connected with the left-hand wire m and the auxiliary bar 0 with the right-hand wire by means of a conducting metallic piece. It is obvious that this could be inverted. I mean that the shaft-bars a and I) could be connected with the right-hand Wire and the auxiliary bar a with the left-hand wire. The wires m are suitably prolonged at the top and pass through holes a of an angular piece 0, fixed to the upper edge at of the loom-frame. On the upper part of the angular piece 0 is fixed an insulating-plate and on top of the latter an iron plate 3. Both these plates are pierced with holes p 5', through which the wires m pass also. It should be noted that the diameter of the holes 11 and s is much greater than that of the wire m, so that these wires m do not come in contact with the plate 8 or the angular pieces 0,While the holesp' have the same diameter as the wire m, so that the latter is guided in the holes 1) of the plate 19. Electric conducting-wires are attached to the plates 3, the other ends of which (see Figs. 1, 7, and 8) are connected with a battery B. The apparatus A, with the armature 6, is inserted in this circuit. To the free ends of the wires m, which pass through the holes np s, loose disks i are attached, which are suspended on the springs 25', fixed to the reinforcements t of the wires m. The heald-framesrare sus pended from bands to, running over rollers 'r', and are moved up and down by means of the treadle U. These are allwell-known devices and need therefore no further description. When the heald-frame is in the upper shed, Fig. 7, the circuit is never closed, because the wires m are not in contact with the plates 8, and the current is interrupted between m ands. If the heald-frame comes in the lower shed, Fig. 8, there will again be no closed circuit provided no warp-thread be broken, notwithstanding the circuit is closed between m and 3, because in the lower shed position the healds do not touch the auxiliary bar; but if a warp-thread should be torn and the frame 0" is in the lower shed the corresponding heald will not be held upward by the warpthread, but will drop (see 01 r) and rest against the auxiliary bar 0, sliding with its inclined sidef (see Figs. 9 and 10) along the latter, so that a positive contact is established between the heads and the shaft-bars a and Z), whereby the circuit is completely closed, as the shaft-bars a I) come in contact with one pole and the auxiliary bar 0 with the other pole of the battery.

Having thus described my invention, what I claim is- 1. A heald for looms, comprising two parallel main bars, leash wires for the warpthreads having open heads engaging with said main bars and having beveled ends, an auxiliary bar below the lower main bar, a source of electric current having its terminals connected respectively with said main bars and auxiliary bar, and an electrical stop-motion in circuit therewith.

2. A heald for looms, comprising two parallel main bars, leash -wires for the warpthreads having open heads engaging with said bars, said heads having beveled ends inclined in the same direction, an auxiliary bar below the lower main bar and in line with the lower head, a source of electric current whose terminals are connected respectively with the main and the auxiliary bars, and an electrical stop motion in circuit therewith, whereby when a warp-thread breaks, the beveled ends of the heads will force them sidewise when the leash drops, and insure a good contact between the lower head and the main and auxiliary bars.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

VINCENZ MACKU.

\Vitnesses:

HEINRICH VUR, W. DRAHOKOUPIL.

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