US1866053A - Thin place detector - Google Patents

Description

K July 5 1932. H. POPE ET A; 1,866,053

' THIN- PLACE DETECTOR Filed Oct. 25, 1950 6 ll 22 l9 i7 23 5 ,EZ}(7 1.

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Patented July 5, 1932 UNITE s'rTES.

THIN PLACE na'rno'ron Application filed. October 25, 1930. Serial No. 491,278. ii

This invention aims to provide a thin place detector which can be manufactured cheaply out of stock materials and be attached to a loom, without working any changes in the .5 loom, and, more generally, to provide a device which will stop a loom whenever a thread is dropped or the filling fails.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the invention appertains.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the combination and 16 arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawing: Figure 1 shows in elevation a loom whereon the device forming the subject matter of this application has been mounted, parts appearing in section;

Figure 2 is a top plan of the device described and claimed;

Figure 3 is an elevation wherein parts are section; Figure 4 is an elevation, looking at right angles to the showing of Figure 3.

The device forming the subject matter of this application may be mounted on looms of many different kinds, but, by way of illustra- 'so in tion, there is shown in the drawing, a loom 1- including a breast beam 2. The fabric is shown at 3 and the weaving point is marked by the numeral 4. The numeral 5 designates an electrical circuit in which is interposed the mechanism 6 by which the stop motion is controlled.

No novelty is claimed for the parts hereinbefore described, saving in so far as they may enter into combination with parts hereinafter set forth.

The numeral 7 marks a bracket, which may be made of metal. The bracket 7 is provided at its top with a thinned flange 8, and

50 the bracket has a lateral wing 9. An insulatingtube 10 extends upwardly through the wing 9 and then forwardly, toward theloom 1, in a horizontaldirection, as indicated in Figure 3 and as theredesignated by the numeral 11. f .n i A conducting member is provided andv may be a piece of stiff wire. The conducting member includes a verticalbody 12 which extends upwardly through the vertical part of the insulating tube 10; The lower end of the body 12. of the conducting member is connected electrically at 14 to the circuit 5. At its upper end, the conducting member has a substantially horizontal extension 15 disposed at right angles to the body 12 of the conducting member and extended toward the loom 1. This extension 15 of the conducting member carries a cross piece 16 arrangedat right angles to the extension, as shown in Figure2 and slanted downwardly a little, as shown in Figure .4, the position of the cross piece 16, however, being substantially horizontal. At its outer end, the cross piece 16 of the conductingmember has anupstanding abutment 17. The reason for calling this part an abutment will be made manifest hereinafter. Thefconducting member is steadied andheld in place by a yoke 18 which slants downwardly as shown in Figure 4:. The upper end ofthe yoke .18 has ahook 19 that extends around the horizontal part 11 of the insulating tube 10, and, therefore,around the extension 15 of theconductingmember. At its inner end the'yoke 18 has an eye 20 through which passes a securing element 21,,such as a bolt, holding the yoke 18 on the bracket 7. v

The numeral 22 marks a shaftdisposed in an approximately horizontal position and mounted'torock in the flange 8 of the bracket: 7 .Theshaft 22 is provided at one end with. an arm 23, located at right anglesto the shaft, the arm having at its end a depending finger 1 24l'which bears on the fabric 3 near to the weaving point 4; The arm 23 extends-across the member 16 butis spaced therefrom bya very small distance, so that, ordinarily, there is no electrical contact betweenzthe parts 16 and 23. The shaft 22 and the arm 23 may be conveniently and advantageouslymade -l00 out of a piece of wire, and it is 1n order to limit lateral or horizontal flexing of the arm 23 that the abutment 17 is provided, on the end of the cross piece 16 of the conducting member.

The arm 23 is bent upon itself, intermediate its ends, near to the shaft 22, to form a downfirm seat in the bracket 7 and has a squared end 29 which goes into the breast beam 2, and prevents the bushing from turning. Through the bushing 28 extends a securing device 30, such as a bolt, which holds the insulating bushing 28, and consequently the bracket 7, 0n the breast beam 2.

In practical operation, the finger 2 1 of the arm 23 rests on the fabric 3 near to the weaving point 4, the arm 23 being spaced a short distance, vertically, from the cross piece 16 of the conducting member 12. There is, therefore, under such circumstances, no electrical contact between the parts 16 and 23. If,'however, the filling fails, or if a thin place in the fabric 3 results from any other cause, the arm 23 is permitted to swing downwardly, and electrical contact is made between the cross piece 16 and the arm 23. Then, the circuit 5 is closed through the body 12 of the conducting member, the extension 15, the cross piece 16, the arm 23, the shaft 22, the bracket 7 and the securing element 21. If desired, the bushing 28 may be made of conducting material, the circuit may be permitted to ground through the frame of the loom, and the connection shown at 521 in Figure 3 may be omitted, this being a change readily obvious from the drawing, without making a separate figure toshow it. Preferably, however, circuit is arranged as indicated in Figure 3. a

What is claimed is:

A thin place detector for looms, comprising a bracket, meansfor securingsaid bracket to a loom, av conducting member including a body mounted in the bracket, the body havtures.

JOHN H. POPE. BEE MORGAN.

ing a rectangular extension provided with a 3 cross piece arranged approximately parallel to the bracket, the cross piece having an upstanding abutment,an arm mounted to swing on the bracket and extended above and across the cross piece, at one side of the abutment, the arm having means for engaging the fabric in which the thin place occurs, the arm being spaced from the cross piece by said means, while said means is in engagement with the fabric, the abutment limiting the lateral movement of the arm and keeping the arm above the cross piece, the arm swinging into direct electrical engagement with the cross piece when a thin placeis encountered,

, means for connecting the conducting member

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