US1845454A - Knitting machine - Google Patents

Description

Feb. 16, 1932. J. WACHSMAN KNITTING MACHINE Filed Nov. 5, 1950 Jacob Wachwnxn Patented Fa. 16, 1932 UNITED. STATES 140013 WA, 011- 3300x1311, NEW Yonx m'rrnm MACHINE Apiilloationflled Iovember a, 1930. Serial No. 493,178.

My invention relates to certain new and useful improvements in knitting machines and it particularly seeks to provide a bracket for carrying a thread passing eye or eyes and slack take-up device.

Primarily, the invention has for an object to provide a bracket which will collect little or no dust and which will be of universal use throughout the machine wherever such brackets are employed.

Further, it is an object of the invention to provide an improved slack take-up device whose tension may be regulated at will.

Further, it is an ob ect to provide a slack take-up device combined on said bracket with a simple circuit closer unit so that when a thread'breaks the stop motion circuit of the machine may be instantly closed. 5

Other objects will in part be obvious and in part be pointedout hereinafter.

To the attainmentof the aforesaid objects and ends, the invention still further resides in the novel details of construction, combination and arrangement of parts, all of which will be first fully described in the following detailed descri tion, then be particularly Eginted out in t e appended claims, reference ingxhad to the accompanying draw ngs,- 1n

whic

Figure 1 is a sideelevation of the embodiment of the invention adapted particularly for stationany machines, this embodiment being shown as a duplex bracket, i. e., having two slack take-up device's.

Figure 2 is a perspective view of the bracket shown in Figure 1 together with the parts carried thereby.

Fi ure 3 is a cross section on the line 3-3 of Figure 2.

" Figure '4 is a perspective view showing the bracket as a single unit Figure 5 is '-a detail longitudinal sectlon through the circuit closer box.

In the drawings in which like numerals of reference indicate like arts-in all of the figures, 1 represents a flat ar which is designed to lie in a vertical plane, the bar having one end bent or twisted to provide an ear 4 for.

mounting on a suitable support 6. The other end of the bar 1 is bent over at right angles laterally as at 2 and provided with a porcelain lined eye 3. The ear 4 has suitable holes 5 1 for the reception of the securing bolts 7 by which the bracket is fastened to the supporting part 6 of the machine.

8 designates a holding lug for the coil spring portion 11 of the slack take-up wire 10, the In 8 being fastened to one side of the bar 1 y a screw 9. The lug 8 has a slot 12 vadjacent the bar 1 into which the end 13 00 I ofthe tension coil 11 is hooked so that by turning the wire holding lug 8, the tension ma be increased or decreased at will.

he outer end of the slack take-up wire 10 is bent' downwardly at 14 .and carries a I porcelain eye'15 that cooperates with the I porcelain eye 29 that is located in the lateral attachment 28 of the bar 1 as indicated in Figure 1. i When the bracket is used on rotary ty e 70' machines the stop motion circuit may he closed by contact of the wire 10 with a ring 16 which is located in the stop motion circuit 33 which includes the battery 3 1, stop magnet 35 and the stopping lever 36 as diagram- 76 matically indicated in Figure 6, the lever 1 being also included in the circuit.v Since the stop motion mechanism per se is no part of the present invention further discussion thereof is thought to be unnecessary as any 80 well known form "of stop mechanism operated by magnetic release may be used.

When the bracket is used on stationary machines, I prefer the construction shown in Figures land 2. In this construction the 35 bracket carries a circuit closer consisting of a box 17 having a mounting ear 18 held in place by the screw 9 which secures the lug 8.

' The! circuit closer box contains bearing notches 25 in which are fulcrumed a gravity actuated lever 21 so overbalanced as to lie normally in the position shown in full lines in Figure 1 but which, when raised to the dotted line position in Figure 1 by the release of a slacktake-up wire-10, ,will efiect a closure of the electric circuit of the stop mechanism. Within the box is an insulated contact spring 19 and the lever'21 has a heel 27 within the boxdesigned. to engage the spring 19 when and is bent down at its opposite side as at 23 to constitute a side stop or guard to prevent the wires from slipping off when they have engaged the lever upon a breaking of a thread. The box 17 has bearing notches 25 for the bearing portions 24 of the lever 21, and the lever is extended rearwardly as at 26, thelatter part constituting a partial counter- 1 it has a porcelain eye 32.

balance for the lever so that it will not take too much power to raise the lever to the circuit closing position.

When a duplex slack take-up arrangement is used, I provide an attachment 28 to the end of thebracket having the extension 2, the attachment 28 carrying a porcelain eye 29 and being secured to the lever 1 by rivets 37, or in any other suitable way, thus forming oppositely directed extensions each of which has a porcelain eye through which a thread T may be passed. Further a second wire spring holding lug 30 is provided and mounted on the bar 1 slightly to the rear of the'lug 8 and on the opposite side, the lug 30 being of the sameconstruction as the lug 8, and secured to the bar in the same way. A second slack take-up wire 31 is .carried by the lug 30 and So'far as described and referring to the embodiments shown in Figures 1 and 2, when the thread T is running through the machine properly, the slack take- up wires 10 and 31 will assume the position shown in full lines in Figures 1 and 2. Should, however, the

' thread break the slack take-up wire will be released and fly up against the cross bar 22 of the lever 21 and cause that lever to he raised to the dotted line position shown in Figure 1 and thereby close the electric circuit between the heel 27 and spring 19, it being understood that the terminal ends of the stop motion circuit are respectively connected to the box 17 and to the circuit terthrough the eyes 3 and 14.

' From the foregoing description, taken in connection with the accompanying drawings,

' it is thought the complete construction, comclear to those skilled bination and arrangement of parts will be in the art to which it relates.

What I claim is: 1. In knitting machines having an electrically actuated stop mechanism including a stop motion circuit; a bracket consisting .of a flat barlhaving a mounting end for securing to a support, said mounting endand said bar being arranged to hold the bar with its major portion in a vertical plane, said bar also having a laterally extending ear provided with an eye through which a'thread may be passed, a slack take-up comprising a spring'wire having a coil at one end and a thread passing eye at the other end, means to mount said coilon said bar, and means cooperating with said slack take-up wire for clos ing the electric circuit of the stop motion when a thread breaks, said last named means comprising a circuit closer unit mounted on said bar and arranged'to be actuated by said slack take-up when released, said circuit closer, unit comprising a box, an insulated contact element in said box, a circuit closing lever normally lying in a circuit-open position and having a heel for engaging said contact element when said lever is released and having a portion to be engaged by said slack take-up when the same is released from the thread to move said lever to a circuit closing position.

2. In knitting machines having an electrically actuated stop mechanism including a stop motion circuit; a bracket consisting of a flat bar having a mounting end for securing to a support, said mounting end and said bar .being arranged to hold the bar with its maelectric circuit of the stop motion when a.

thread'breaks, and an auxiliary ear mounted on said bar and extending laterally ina direction opposite said first ear, said auxiliary ear having a threadpassing aperture, a second slack take-up mounted on said bar and having a thread passing eye, one of said slack take-ups cooperating with one of said ears, and the other slack take-up cooperating with the other ear and both cooperating with said circuit closer, substantially as shown and described.

3. In knitting machines having an electrically actuated stop mechanism including a stop motion circuit; a bracket consisting of a flatbar having a mounting and for securing to a support, said mounting end and said bar being arranged to hold the bar with its major portion in' a' vertical plane, said bar also having alaterally extending ear provided with an eye through which a thread may be passed, a slack take-up comprising a spring wire having a coil at one end anda thread passing eye at the other end, means to mount said coil on said bar, and means ncluding a circuit closer mounted on said bar cooperating with said slack take-up wire -means comprising a circuit closing unit for closing the electric circuit of the stop motion when a thread breaks, said last named mounted on said bar and arranged to be actuated by said slack take-up when released,

' and an auxiliary ear mounted on said bar and extending laterally in a direction opposite said first ear, said -auxiliary ear havin a thread passing aperture, a second slack ta eup mounted on said bar and havin a thread passing eye, one of said slack ta e-ups cooperating with one of said ears, and the other slack take-up cooperating with the other car and both cooperating with said circuit closer,-substantially as shown and described.

4. In .knitting machines having an electrically actuated stop mechanism includin a stop motion circuit; a bracket consisting 0 a flat bar having a mounting end for securing to a support, said mounting end and said bar being arranged to hold the bar with its major portion in a vertical plane, said bar also having a laterally extendin ear provided with an eye throu h whic a thread may be passed, a slack ta e-up comprising a spring wire having a coil at one end an a t read passing eye at the other end, means to mount said coil on said bar, and means cooperating with said slack take-up wire for closing the electric circuit of the stop motion when a thread breaks, said last named means comprising a circuit closing unit mounted on said bar and arranged to be actuated by said slack take-up when released, said circuit closing unit comprising a box, an insulated contact element in said box, a circuit closing lever normally lying in a circuit-open position and having a heel for engaging said contact element when said lever is released and havin a portion to be engaged by said slack ta e-up when the same is released from the thread to move said lever to a circuit closing position, and an auxiliary ear mounted on said bar and extending laterally in a direction opposite said first ear, said auxiliary ear having a thread passing aperture, a" second slack take-up mounted on said bar and having a thread passing eye, one of said slack ta e-ups cooperating with one of said ears, and the other slack take-up cooperating with the other ear, substantially as shown and described.

JACOB WACHSMAN.

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