US2025460A - Double twist twisting spindle - Google Patents

Description

Dec. 24, 1935.

W. LENK DOUBLE TWIST'TWISTING SPINDLE Filed Feb. 9 1935 2 Sheets-Sheet l hwy/02':

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Dec. 24, 1935. w LENK DOUBLE TWIST TWISTING SPINDLE Filed Feb. 9, 1955 2 Sheets-Sheet 2 Patented Dec. 24, 1935 OFFICE ammo DOUBLE TWIST 'rwrs-rmc smmm Wilhelm Lenk, Remscheid-Lennep, Germany, assignor to Barmer Mascliinenfabrik Aktiengesellschaft, Wuppertai-Oberbarmen, Germany Application February 9, 1935, Serial No. 5,831 In Germany February 17, 1934 2 Claims.

This invention relates to a double twist twisting spindle on which the yarn receives two twists at each spindle revolution.

In the known spindles of this type the stationary supply spool holder is mostly removably mounted on the twisting spindle to enable fresh supply spools to be slipped on from the outer sides of the machine. For the slipping on of fresh spools or of a completely filled holder for supplying spools it is necessary to stop the twistingspindle which is hollowfor threading the threads therethrough. The threads are then to be threaded through the spindle by means of a threading wire and can then be conducted over the likewise stationary thread guide to the winding spool.

This spindle construction is open' to the objection that its attendance is very inconvenient and wastes time; moreover each individual spindle must be equipped with a stopping device which on the one hand considerably adds to the cost of the machine and on the other hand makes the attendance of the machine more diilicult. Consequently by this construction the-rentability of the machine is considerably reduced as the machine is idle for too long periods.

The object of the invention is to reduce these idle periods of the machine to a minimum and to reduce the cost of manufacture in order to thereby increase its rentability.

The invention consists in that the stationary supplying spool holder together with the rotating upper part of the spindle comprising the ring taking up the thread and the hollow spin die is removably mounted on the driving wharve and on the lower spindle part and connected with the latter by clamping or friction action. Radial guide slots are preferably provided in the underside of the upper removable part of the spindle 4 for outwardly conducting the thread coming out of the hollow spindle.

This spindle construction presents the advantage that the upper part of the spindle is removed for placing on fresh supply spools, so

that the filling with fresh spools and the threading of the. threads through the hollow spindle can be carried out from the outer side of the machine. Thus, the idle period or the interruption of the twisting on each individual spindle is reduced to a minimum. A further advantage is that the rotating spindle part need no longer be stopped for placing on the upper part because the threads are already pulled through in downward direction. Consequently, no stopping device on the spindles is required, which results in a considerable cheapening of the cost of manufacture of such machines. Briefly, it may be said that the rentability of these machines is considerably improved by the invention.

spindle.

Two embodiments of the invention are illustrated by way of example in the accompanying drawings in which:-

Fig. 1 shows a complete spindle in longitudinal section. 5

Fig. 2 is a similar view, the upper part of the spindle being, however, removed from the lower part.

Fig. 3 is a section on line III-411 of Fig. 1.

Fig. 4 shows a modified form of construction in 10 longitudinal section.

Fig. 5 is a similar view showing the upper part of the spindle removed from the lower part.

Fig. 6 is a section on line IV--IV of Fig. 4.

The double twist twisting spindle is composed 15 of a spindle I, a wharve 2 rigidly connected with the spindle, an upper part 3 removably mounted on the spindle I but connected therewith by clamping or friction effect and consisting of a ring for taking up the thread and a hollow spin- :0

dle, and a supplying spool holder 4 loosely mounted on the upper part 3. The upper part 3 participates in the rotation of the spindle I, whereas the supplying spool holder 4 remains stationary. In the iorm of construction illustrated 25 in Figs. 1 to 3 the hollow spindle in the upper part 3 has slots 6 in its lower end for the passage of the threads, whereas in the upper part a hollow cone 1 is arranged for keeping the threads away from the spindle. In the form of construction 30 illustrated in Figs.. 4 to 6 the hollow spindle consists of a tube 8 which is likewise slotted at its lower end for guiding off the thread.

The upper part 3 of the spindle is rotated either by friction or clamping effect which lat- 35 ter is produced by a cone 8 or ill respectively. For taking up the thread segments II are provided which project from the under side of the removable upper part and form radial slots l2 0 for outwardly conducting the thread passing out of the upper part.

I claim:-

l. A double twist twisting spindle, comprising in combination a lower spindle part, a wharve 45 rigidly connected with said lower spindle part, a rotatable upper spindle part composed of a ring for taking up the thread and of a hollow spindle removably mounted on said lower spindle part and connected therewith by friction, and a sta- 5o tionary spool holder mounted on said hollow spindle and removable with said upper part.

2. a double twist twisting spindle as specified in claim 1, in which the removable upper spin dle part has slots in its lower end conducting l5 outwards the thread passing out of the hollow

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