US1912262A - Weft feeler for automatic looms for weaving - Google Patents

Description

May 30, 1933. e. 'DJEDERICHS "EFT FOR AUTOMATIC LOOKS 'FOR'WBAViNG Filed Jan. 30, 1931 Patented May 39, 1933 GUSTAVE DIEDERICHS, F STE-COLOMBE-LES-VI ENNE-ON-T;HE-BHONE, FRANCE WEFT FEELER FOR AUTOMATIC LOOMS FOR WEAVING- Application filed January 30, 1931, Serial No.

The present invention relates to improvements in weft feelers for automatic looms for weaving employing directly the yarn on cardboard or pa er tubes to cause the changing of the shutt e when the tube becomes exhausted.

The invention comprises a bracket aflixed to the loom frame, an arm mounted on the bracket to slide normally to the shuttle to directly engage the weft on the shuttle tube and a spring controlled lever pivoted in a slot in the bracket normally engaging both the shuttle side and a stop on the sliding arm but which when the sliding arm moves owing to a shortage of weft on the tube releases the shuttle changing mechanism.

It will be described with reference to the accompanying drawing which is given by way of example.

Fig. 1 is a front elevation showing the position with the shuttle in operation when the tube is carrying sufiicient yarn.

Fig. 2 is a vertical section through the feeler on a line 2-2 Fig. 1.

Fig. 3 is a view similar to Fig. 1 at the moment of knocking oif.

Fig. 4 is the corresponding section on line 4.-et Fig. 3.

In the embodiment of the invention here shown, on the frame of the loom is mounted a bracket a which is formed with a slot 6 and a socket c.

In the slot 6 a lever 03 provided with a pivot pin 6 slides. This lever is drawn towards the shuttle n against which it bears by a spring Said lever is provided near its free end with an abutment it having an oblique edge which is parallel to that of the stopprojection h hereinafter described.

In he socket c a rod 9 having a stop projection h slides normally to the shuttle a. The outer end of the stop projection is oblique, as shown. Said rod also has a fork 11 which projects thereabove.

This rod is continuously pushed towards the neck by spring is.

It will be easily seen that the lever cl which bears against the wood of the shuttle a may undergo two movements by its pivoting about the pin 6 in the slot 7), one perpendicular to 512,457, and in France September 24, 1930.

the axis of the shuttle and the other rotary 1n the plane of the bracket.

Thus when there is yarn on the tube Z the rod 9 and the lever 61 occupy the position shown in Figs. 1 and 2 that is to say are 5 moved parallel with the axis of the socket 0 and the axis of the slot 1).

As the weft is used up the diameter of the tube diminishes and the rod 9 moves upwards more and more under the action of the spring towards the axis of the spindle of the shuttle.

When the minimum quantity of yarn is reached necessitating a change of shuttle, the fork 2' passes around the tube Z (Fig. 4) and 5 the rod 9 moves to the position shown (Fig. 3). At this moment, the stop it moves out of the way and allows the rotary movement of the lever cl which pushes in the direction of the arrow a rod m which operates the shuttle changing mechanism.

This feeler entirely mechanical and operating surely and softly allows for reducing to a minimum the amount of yarn left on the tube.

As will be seen and as follows from the preceding, the invention is not limited to the methods of carrying it out before mentioned nor to its different parts but embraces on the other hand all variations of the rod g whether or not ended by a fork c.

Having now particularly described and as certained the nature of my said invention and in What manner the same is to be performed, I declare that what I claim is:

A weft feeler-for looms, comprising, in combination with a shuttle and shuttle, tube, and with a movable rod for operating shuttle changing mechanism, a supporting element for attachment to the loom frame, having a guide for the'said operating rod and also having a slot normal to the shuttle and guides also normal to the shuttle,-a feeler rod normal to the shuttle, mounted for movement in said guides and having a fork to engage astride the shuttle tube and also having a stop projection provided with an oblique end, a spring to move the feeler arm toward the tube, a lever having a pivot mounted for movement in the slotof the supporting element, said lever being arranged with its free end engageable with the shuttle and also provided with a stop projection having an blique end slidably engaged with the stop pro- 5 jection of the feeler arm, and a spring active on said lever to cause the same to move said operating rod when the stop projection of said lever is releasedby that of the feeler rod when the lattermoves astride of thetube.

In witness whereof I have hereunto setmy hand.

GUSTAVE DIEDER'IGHS.

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