US553516A - Picker-check for looms - Google Patents

Description

(No Model.)

J.. T. DOYLE. PIGKER GHEGK FOB. LOOMS.

Nq. 553,516; Patented q an. 28, 1896.

MW mf.

W Wm j@ UNITED STATESN PATENT OFFICE.

JAMES' T. DOYLE, OF SKANEATELES FALLS, NEIV YORK.

PICKER-CHECK FOR LOONIS.

SPECIFICATION forming part of Letters Patent No. 553,516, dated January 28, 1896. Application filed June 21, 1890. Renewed March 28, 1892. Serialll'o. 426,772. (No model.)

To all whom it may concern.'

Be it known that I, JAMES T. DOYLE, of Skaneateles Falls, Onondaga county, New York, have invented certain new and useful Improvements in Picker-Checks for Looms, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

Figure l is a side view of a mechanism embodying my invention, shown therein by solid lines` and showing also the position, by dotted lines, of the adjacent portions of the loom to which my invention is designed to be attached. Fig. 2 is an isometric view of a device embodying my invention, the view also indicating by dotted lines the relation thereto of the picker and the rod upon which it slides. Fig. 3 is a viewin end elevation, partly in section, showing some of the parts of my improvement.

I am aware that heretofore yielding abutments supported by springs have been used to receive the blowof the picker as it is driven back or outward by the point of the shuttle as the latter enters its appropriate shuttlebox. In this class of devices the reaction of the spring used to sustain the yielding abutment has always heretofore caused the shuttles to rebound more or less, and this fault has interfered greatly with the introduction and use of devices of this class.

In my improved picker-check I have introduced, between the yielding abutment which receives the impact of the picker and the point of application of the sustaining-spring therefor, means for creating frictional resistance, which dulls or deadens the recoil of the sustaining-spring, and although this spring still has considerable strength its action is slowed or dampened, so that it is not so quick in its recoil as to cause the shuttle to rebound. This principle of construction, which consists in work of the lathe of a loom at the outer end of the shuttle-box thereof.

The device illustrated is intended-particularly for use in looms having shifting shuttleboxes, but it is obvious that if desired it may be applied to looms in which the boxes do not move or shift without departing from the design or spirit of my invention.

The base-plate A is intended to be secured in suitable manner to the part by which the check is to be carried-as, for instance, by a bolt passing through a hole a in the baseplate, said hole being shown in Fig. l.

To the base-plate A are secured studs or posts B and C, and at a short distance laterally from the stud C a short shaftD is mounted on said. plate. One end of the shaft D passes through a hole in the plate A and is threaded. A nut d, being turned upon the threaded end of D' tightly against the plate A, secures said shaft D in position. Upon this shaft is fixed a sleeve or barrel E, to which is applied a spring F, the opposite ends of said spring being secured to the sleeve or barrel near the ends of the latter, and the middle portion of the spring irst being coiled around the sleeve or barrel to form oppositelydirected spirals, is then bent to form a hook h.

Abelt of flexible material-as, for instance, leather-is shown at g g' g2 g3 g4 g. This belt is drawn around the studs B and C to form a loop, as is indicated by the drawings at g g g2 g4. The slack portion of this loop toward the rear is attached by a connecting-link g2 Q6 g3 to the hooked end h of the spring F. Upon the front face of the belt g g g2 g4 a protective shield or reinforcement g5 is shown at that point, which is likely to be abraded by the impact lof the picker.

The operation is as follows: IVhen the shuttle is driven rapidly into its box, its point engages the picker and the latter is driven backward or outward against the front face of the loop g g' g2 g4 at the point indicated by the reinforce or shield g5. This is the point which constitutes the yielding abutment for IOO the picker herein referred to. This abutment at g5 is driven backward or outward, and in this operation certain portions of the loop, which are shown as lying between the stud C and the point g (at gl) are made to slide over the surface of the stud C from the rear to the front, and if the blow of the picker is sufciently strong this will continue until the points of the loop at g and g are in contact, when the loop being all taken up a dead-stop will be obtained. During this movement the link g2 gb' g3 will have drawn the spiral spring out around the barrel E, and this spring being of proper strength will finally check the rearward movement of the picker, after which its resiliency will restore the parts to their normal position. (Indicated in the drawings.) In this return movement of the spring F portions of the loop gg g2 g4 are again drawn over the surface of the stud C with considerable friction, which dulls or deadens the recoil of the spring, and the parts return less rapidly to their normal position than in devices in which no resistance is interposed between the yielding abutment and the sustainingspring. The loop will be found to slide very little, if any, around the stud B.

Some of the features embodied in this device may be eliminated without destroying the operation of the others-as, for instance, the loop g g g2 g4 may be made so large that it is never all taken up to furnish a dcad-stop. The same eifect will be produced if the tension of the spring F is properly regulated. The reinforce or shield g5 may be dispensed with if desired and the blow of the picker received directly upon the belt. The portion g of the loop, instead of being secured to g4 at g2, might be secured in any one of a number of ways which would suggest themselves to the skilled mechanic. Any of these changes would not affect the leading principle of operation of this device, which is the interposition of a frictional resistance between the yielding abutment and its supporting elastic spring.

Many forms of spring may be used at discretion, and I have used different forms successfully.

In illustrating this invention I have shown what I consider to be the best form which I have employed to this time.

That I claim as my invention, and desire to secure by Letters Patent, is-

l. A picker check comprising a yielding abutment, a restoring spring therefor, and a friction device serving to check the recoil of said spring, said friction device being arranged on the side of said yielding abutment opposite that which receives the impact of the picker.

2. A picker check comprising a yielding abutment consisting of a iiexible strap, a restoringspring connected to one end of said strap, and a friction device, as supporting stud C, over which said strap passes and which is arranged on the side of said strap opposite that which receives the impact of the picker, so that the friction is increased in proportion to the strength of the blow of the picker against said abutment.

3. A picker check comprising the combination with a yielding abutment consisting of a iiexible strap provided with a shield, as g5, of a restoring spring, as F, connected to one end of said strap, and a supporting stud, as C, over which said strap runs and which is placed on the side of said strap opposite said shield, which latter receives the impact of the picker.

JAMES T. DOYLE. Vitnesses:

FREDERICK I. ALLEN, GEORGE XV. NELLIs.

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