US1879558A - Lug member for looms - Google Patents

Description

P 1932' G. SLAUGHTER ,879,558

we MEMBER FOR LOOMS I Filed Nov. 19. 1950 Patented Sept. 27, 1932 GRAHAM SLAUGHTER, or eREEnvILLE, sourn CAROLINA LUG nmnmn ron Looms Application filed November 19, 1930. swarm). 496,743.

This invention relates to lug members which are employed to actuate the picker stick in driving the shuttle-across the warp threads in a loom. The lug member is connected atone end to an oscillating pick arm and at the other engagesthe picker stick.

When the pick arm is swung in one direction,

the lug member is jerked forwardly, imparting an abrupt movement to the picker stick 1 which, in turn, strikes the shuttle. Lug

members as heretofore constructed have included a relatively short leather or fabric loop for connection with the pick arm and a relatively long loop for connection'with the picker stick, theseloops being boltedor otherwise secured to an intermediate lug block. It will be apparent from a consideration of the duty imposed upon the lug memberthatserious wearing conditions arise and also that 0 there is a tendency in the loops to stretch and, therefore, change their adjustment. To meet these conditions, it has been the practice to employ as material for the lug straps leather of particularly high grade and high strength and toughness'. I have discovered that by building up the lug memberof flat straight leather blanks suitably spaced and connected, I am enabled to produce a lug member not only of appreciably lower cost 39 of manufacture but superior in strength and wearing qualities and more convenient of adjustment than lug members heretofore available. In one aspect, my invention consists in improvements in the short lug which coriin another aspect my invention consists in improvements in the long lug which connects with the picker stick. In still another aspect,

my invention consists in an improved lug member including a centrally disposed iron and long and short lugs of improved'construction. I

An important feature of my invention con-. sists in a short lug built up of a plurality of fiat leather blanks clamped face to face and perforated as a unit to receive the cross pin of a pick arm. By this construction I insure a straight line pull in the members of the lug without any tendencytoward bending, such 59 as isfound in a loop-shaped lug. Moreover,

J stitutes the connection with the pick arm and Iincrease' the strength of the lug and eliminate lost motion in its connection with the pick arm. Further, by slitting each member of the short lug from its perforation through one end thereof I am enabled to assemble the parts of the lug upon the pick arm conveniently and then clamp them together.

[In respect to the longlug, an important feature of my invention consists in apair of flat straight sides united at their outer ends and a cylindricalspacer constructedto make line contact or rolling engagement with the pick stick. By this construction I insure a straight line pull of the lug, improve its strength and eliminate misadjustment by stretching. .The spacer member, moreover, contacts with the pick stick only upon its rear flat surface, thus eliminating wear on its corners heretofore encountered due to contact with the sides of the loop. As a further feature 'of thelong lug, I provide leather spacer blanks at the'forward end which act as a cushion of limit stop for the pick stick in its forward movement. I

These and other features of the invention ,Willbe best understood and appreciated from the following description of a preferred embodiment thereof, selected for purposes of illustration and shown in the accompanying drawing, in which I Fig. 1 is a view in perspective of the lug member with. parts broken away; and

Fig. 2 is a similar View of one of the blanks of the short lug.

The lug member shown in Fig. 1 comprises an iron or a metal strap 10 perforated at one endto receive the'short lug bolt 14 and having a slot 12 in its other end through which passes the long lug bolt 24. The short lug is made up of a number of similar blanks 16 of heavy 1 leather, preferably chrome tanned leather. Each of the blanks is perforated at 18; and provided with a slit 20 which eX- tends from the perforation 18 longitudinally to the rear edge ofthe blank. The blanks 16 areassembled in a stack, two on each side of the iron .10 in register with each other and with their perforations 18 in alignment.

They areps'ecurely heldin position by the clamping.,.bolt 14 and by cap members 22.

The aligned perforations 18 receive and form a bearing for the cross pins 21 of the pick arm 23 which, it will be understood, is an oscillatory part of the loom by which movement is imparted to the lug member. It will be noted that in connecting the short lug to the pick arm 23 the separate blanks 16 may be threaded over the cross pin 21 by reason of the slits and that when the assembly is completed a well fittin connection is effected between the lug member and the pick arm which is subject to slight wear and straight line tension in its component parts.

The long lug is adjustably secured to the other end of the iron 10 by the clamping bolt 24 already mentioned. It comprises a number of short spacer blanks 26 arranged, as herein shown, two on each side of the iron. Outside the spacer blanks 26 are placed a pair of long straight side pieces 28 spaced at their outer end by a stack of circular washers 30 and held together by a clamping bolt 32. The spacing blanks, sides and washers may all be advantageously formed from thick flat blanks of chrome leather or the like which may be cut out and assembled with good advantage from the manufacturing standpoint.

The long lug is adapted to receive between its sides 28 the pick stick of the loom, which is shown in dotted lines in Fig. 1. The sides 28 are spaced sufficiently to receive the pick stick freely and in the actuation thereof the cylindrical spacer formed by the stack of washers 30 makes line contact with the outer surface of the pick stick and approximates a rolling engagement with the latter during its operative Stroke. It will be apparent, therefore, that the actuation of the pick stick is without cramping or without the wear on the corners thereof which has occurred from engagement with a loop-shapedlug.

The outer ends of the spacer blanks 26 extend beyond the outer end of the iron 10 and collectively form a yielding bunter or abutment for limiting the forward movement of the pick stick; Cap members 34 cooperate with the clamping bolt 24 in securing the long lug to the iron 10. In case longitudinal adjustment is necessary, the clamping bolt 24 may be loosened and moved in the slot 12, thus lengthening or shortening the lug member as a whole.

While I have referred to the side pieces 28 of the long lug as being leather blanks and prefer to make them of such material, it wouldnot be outside the scope of my invention to employ metal or metal-lined side pieces and in a lug member so constructed all the advantages above discussed would be present.

Having thus described my invention, what I claim as new andidesire to secure by Letters Patent is;

1. A lug member for looms, including a short lug comprising a stack offiat straight clamping bolt for connecting thereto another stack of short flat leather blanks and "a pair'of'spaced straight leather blanks having a cross piece of circular cross section held between their outer ends.

3. A lug member for looms, comprising a centrally disposed iron having an equal number of short flat leather blanks clamped upon each side and projecting beyond the inner end of the iron to form a yielding bunter for a pick stick, the blanks being transversely perforated and slitted through their inner ends, and a long lug attached to the other end of the iron.

4:. A lug member for looms, comprising a centrally disposed iron having flat leather blanks secured thereto and projecting beyond its inner end to form a yielding bunter for a pick stick, flat side straps spaced from the iron by said blanks and united at their outer ends by a cylindrical striker member, and a short lug attached to the other end of the iron.

5. A lug member for looms, comprising a single elongated center member having a stack of short leather blanks bolted to each end and projecting beyond the same, one stack being perforated for connection with a pick arm and the other stack acting as a yielding bunter for a pick stick, and side straps spaced by said latter stack.

6. A lug member for looms, comprising a single elongated center member having a stack of substantially rectangular leather blanks attached to each end in symmetrical arrangement, a retaining cap for each stack, and side straps spaced by one of said stacks.

7. A lug member for looms, comprising a single elongated center member having astack of short leather blanks disposed upon opposite sides of each of its ends, a sheet metal retaining cap enclosing said stacks, side straps spaced from one end of said center member, and retaining bolts passing through each end of said center member and said retaining caps.

8. A lug member for looms, including a short lug comprising a stack of flat straight blanks of heavy leather, a transverse bolt and cap members clamping said blanks together, the blanks being perforated as a stack, and each individually slitted from its perforation out through one end.

I GRAHAM SLAUGHTER.

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