US1311053A - Planoorapli co - Google Patents

Description

A. E. DARLINGTON.

PICKER STICK CHECK FOR L D OMS.

7 APPLICATION. FILED MAY 20. I9I9'. v 1,31 1,053. Patented July 22, I919.

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PICKER STICK CHECK FOR LOOMS. APPLICATION FILED MAY 2 011919.

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PIC'K'ER STICK CHECK FOR Looms.

APPLICATION FILED MAY 20. 1919 Patented July 22, 1919.

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PICKER-STICK CHECK FOR LOOMS.

Specification of Letters Patent.

PatentedJuly 22, 1919.

Application filed May 20, 1919. Serial no. 298,366.

To all whom it may concern Be it known that I, ALBERT E. DARLING- TON, a citizen of the United States, residing in Columbia, .inthe county of Richland and State of South Carolina, have invented certain new and useful Improvements in Picker-Stick Checks for Looms, of which the following is a specification.

This invention relates to that class of devices employed in looms for checking the throw of picker sticks at or near the end of each operation, and the obj ect of my invention is to provide devices of this kind which are simple in construction, durable, readily applied to a loom frame, and easily adjusted to check the throw of the picker stick to the desired extent. I

In carrying out my invention 1' provide the lower portion of the picker stick with a shoe or rocker which rests on a supporting bracket secured to'the loom frame, and the shoe with the stick is held in position relatively to the bracket by a strap secured to the stick and held under tension by a spring drum below the bracket, the arrangement being such that the shoe is prevented from moving out of-pl-ace on thebracket, but is free to rock thereon. Extending upward arm which supports a drum surrounded by a two-part ring having frictional engagement with the drum, but which is itself held against a turning movement by a connection with the arm of the bracket.

Devices are provided for adjusting the two-partringin order to regulate the pressure thereof on the drum.

Rigidly secured to the drum is an up wardly extending plate having at its upper end across piece provided with abutments against which the picker stick strikes when oscillated. Each of these abutments is provided with a cushion,'and one of them is ad justable so that it may be set to correspond with the throw of the stick.

The organization is such that the picker stick is checked at the end of each throw without being unduly impeded, without strain on the mechanism, and without undue Wear thereon.

In the accompanying drawings Figure 1 shows a front elevation of the lower part of a, picker stidk, illustrating how it is supported and showing my improved checking devices.

Fig. 2 is a top plan view with the picker stick in section.

V Fig. 3 shows a vertical section on the line 33 of Fig. 2.

' Fig. 4 shows a vertical section on the line 44. of Fig. 3. I

Fig. 5 shows an elevation of the flanged drum of the checking devices.

Fig. 6 shows a horizontal section of tin adjustable checking devices.

Fig. 7 shows a section of the spring drum and strap.

Fig. 8 is a front view of the spring drum.

Fig. 9 shows a vertical section of the spring drum and parts connected therewith on the line 99 of Fig. 7.

The picker stick A carries near its lower end a shoe or rocker B, which rests on a bracket C of usual construction which may be secured by a set b'olt D to the loom frame in the usual way. The shoe is firmly attached to the picker stick by the bolts a. An arm or hanger E, depending from the bracket C, supports a bolt F which extends through a sleeve G, which in turn passes through the hub it of the drum H. A spring I is coiled around the hub ofthe drum, one end i being secured to the sleeve G, while the other end 2" is secured to the drum, and this end ofthe spring also serves to connect the drum to the strap J, which is secured to the lower end of the picker stick by abolt K and. clamping devices 70. It will be observed that the body of the bolt F is square where it extends through the sleeve, so that the latter cannot turn on the bolt, and the sleeve holds securely one end of the spring, which is coiled around the sleeve and also around the hub. The drum is free to revolve about the sleeve.

The shoe B is provided with a finger b which extends through a slot in the bracket, and it is also formed with a slot 6 through which extends a finger c on the bracket. These fingers serve to prevent endwise movement of the shoe 011 the bracket, but permit it to freely rock thereon.

The strap is held undertension by the spring drum, and while serving to hold the rocker shoe on the bracket permits the picker stick to move inone direction against the force of the spring, and in the other direction by the pulling force of the spring. The arm E of the bracket G supports an' L- shaped arm M, the lower portion of which is secured to the arm E by the bolt F and by another bolt f,

which engages said arm E. The upper portion of the arm M carries at its upper end a bolt N on which is mounted a flanged drum 0, which has secured to it a plate P extending upward from the drum and carrying at its upper end a cross piece Q having forwardly extending end portions 9, 51, one of which, 9, serves as a check for the picker stick when moving in one direction, while the other one, serves as a support for adjusting bolt R, which engages an adjustable checking device S. The checks 9 and S are provided with cushions :20 which may be made of leather or other suitable material. The checking device S is L-shaped, and is connected with the cross piece Q by flanged studs t which operate in a .slot to in the cross piece Q. The bolt R has a swivel connection at r with the checking device S', and it is provided with nuts y by means of which the desired adjustment may be obtained. By these devices the distance between the checking devices or abutments g and S may be adjusted to correspond with the throw of the picker stick, which abuts against one of the checking devices at the end of each throw. The drum 0 is surrounded by a two-part ring W, the two parts of the ring being hinged at w and being arranged between the flanges 0 of the drum 0. Opposite ends of the ring sections are formed with the arms w, through which extends a bolt V which carries a wing nut V and a spring 4), which latter is coiled around the bolt between the wing nut and the arms w, the arrangement being such that by means of the nut V the pressure of the ring on the drum may be adjusted to vary the frictional contact of the ring with the drum. The ring sections are lined with leather, rubber, or other suitable material 2 as indicated. In order to prevent the ring sections from turning with the drum, one of the sections is provided with a bifurcated arm 10?, which engages a stud w on the arm M.

When the picker stick is reciprocated in the usual way it strikes against the checking devices 9 and S, said checking devices being connected in the manner before described with the drum 0. The latter will be turned a short distance against the frictional resistance afforded by the ring sections, and in this way the stick is checked smoothly and without jerk or impact which would place strain on any part of the mechanism. At the end of each stroke the contact of the stick with the checking devices 9 and S is cushioned by the soft material an, and movement is given to the cross piece Q, which movement is transmitted to the drum, which completes the checking operation in the manner before described. A very nice adjustment of the checking operation may be obtained by means of the adjusting devices R and V in the manner before described.

Experience has demonstrated that the devices herein shown and described operate with great precision and with a minimum amount of wear. They are simple in con struction, the parts may be easily assembled,

and the device as a whole may be readily applied to looms of various construction.

I claim as my invention 1. A picker stick check, comprising a vertically arranged plate, a cross piece at the upper end of said plate having laterally projecting abutments against which the stick strikes, a drum to which said plate is secured, and means for applying a frictional braking action to the periphery of said drum.

2. A picker stick check, comprising a vertically arranged plate, a cross piece at the upper end of said plate having laterally projecting abutments againstwhich the stick strikes, a drum to which said plate is secured, a two-part adjustable ring surrounding said drum, and means for adjusting the pressure of the two-part ring on the drum.

3. A picker stick check, comprising a vertically arranged plate, a cross piece at the upper end of said plate having laterally projecting abutments against which the stick strikes, a drum to which the plate is secured, a ring made in two parts hinged together and surrounding the drum, means for preventing the ring from turning with the drum, and means for adjusting the pressure of the ring on the drum.

at. A picker stick check, comprising a drum, means for applying friction thereto, a vertically arranged plate secured to the drum, a cross piece on the plate having an abutment against which the picker stick strikes, and an adjustable abutment on said cross piece, against which the picker stick also strikes. v i

5. A picker stick check, comprising a drum, a two-part ring surrounding the drum, means for preventing the ring from turning with the drum, means for adjusting the pressure of the ring on the drum, a vertically arranged plate secured to the drum, a cross piece on the plate having laterally projecting end pieces, one of which provides a check or abutment for the stick, a bolt extending from the other end piece, an adjustable abutment having a swivel connection with the bolt, and means for connecting said adjustable abutment with the cross piece.

In testimony whereof, I have hereunto subscribed my name.

ALBERT E. DARLINGTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). G.

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