US1430680A - Contact device for braiding-machine stop motions - Google Patents

Description

A. PETERSEN.

CONTACT DEVICE FOR BRAIDING MACHINE STOP MOTIONS. APPLICATION FILED JULY30, 1920.

1,48%680. Patented 0012.3,1922.

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A. PETERSEN.

CONTACT DEVICE FOR BRAIDING MACHINE STOP MOTIONS.

' APPLICATION FILED Jun/20, 1920. g@ PltGIltGd Oct. 3, 1922..

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ANKER PETERSEN, 0F WINTHROP, h'IASSACIi-IUSETTS, ASSIGNOR TO AMERICAN MOLD COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

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Application filed July 30,

To all whom it may concern:

Be it known that I, ANKER PnrEnsnN, a citizen of the United States of America, and resident of Winthrop. in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in Contact Devices for Braiding-Machine Stop Motions, of which the following is a specification.

This invention relates to braiding n1a chines of that type employing two series of bobbin carriers arranged to rotate in opposite directions and in which the strands from the thread in a position to leave the circuit open. 1

One arrangement ofelectrical stop-mechani'sm suitable for use inmachines of this character is disclosed in the patent to Petersen 1,072,984, September 9, 1913, the present invention being an improvement over the device of said patent and being particularly adapted. for use in a machine such as disclosed in the patent to Petersen 1,105,452, July 28, 1914..

In mechanism of this character it is desirable that the thread-actuated device whereby the electrical circuit is closed, shall be of as simple construction as possible commensurate with certainty of operation and an object of this invention. is to provide contactmaking elements of simple form which shall be reliable in operation and little subject to the action of oil and lint which commonly collect on the exposed surfaces of machines. of this type.

One mode of carrying this object into ef feet is disclosed in the accompanying draw ings in Which,-- 1

Figure l is a plan View of a lQQbbin car- 1920. Serial 11 ,400,172.

rier of the inner series showing adjacent parts of the machine-frame in section, the thread-engaging element being shown in the position which it occupies during the normal operation of the machine;

Figure 2 is a fragmentary plan view illustrating parts shown in Fig. 1, but in the position for stopping the machine;

Figure 3 is a partial side elevation of the device shown in Fig. 1;

Figure 4 is a side elevation partly in section, illustrating one of the bobbin carriers of the outer series with its associated contact-making finger; and

Figure 5 is a front elevation of the parts shown in Fig. 4.

' Referring now more particularly to Fig. 1,

1 is a rotary frame upon which the outer series ofbobbin carriers is supported, said frame being provided with an internal groove serving as a guide for rolls 23 mounted upon the inner bobbin carrier 4. At its opposite end the carrier l is provided. with a wheel or roll 5 whereby said end of the carrier is supported during its revolution about the center of the machine. Further details of the bobbin carrier of the inner series so far as its general structure and mode of support and operation is concerned, need not be further referred to herein as the carrier is in general similar to that shown in the patent to Petersen 1,331,672, Febraury 24, 1920, to which reference may be had for a full disclosure of the method of supporting such carrier.

1 is an inner ring integral or fixedly secured to the ring 1 but spaced therefrom, and secured to the inner face of said ring are a series of contact plates at 6, said plates being insulated from the ring '1 but being electrically connected to each other. From one or more of said plates an electrical conductor may'lead to a ring located at the center of the machine, from which ring a conductor leads to a suitablesource of electrical energy. As an illustration of electrical connections suitable for this purpose, reference may be had to the Patent to Peter sen"1,072,984L her'einbefore referred to and in which patent such an arrangement is diagrammatieally illustrated in Fig. 10.

7 is a pivoted finger forming a contact brush, mounted at 8 upon the outer portion of the carrier frame 4, said finger being pressed by a spring 9 against the other periphery of the ring 1 The finger 7 is referably provided with an opening 7 within which is seated a plug 7 of compressed wood or other fibrous or absorbent material, such plug extending substantially flush with the contacting face of the finger. This plug serves to absorb oil or other lubricating material and slowly to feed it to the contact surface as required, thus providing for the proper lubrication of the parts with but little attention on the part of the operator. By means of this finger the carrier isinaintained in electrical contact with the ring 1*, and therethrough with the machine frame, throughout the path of travel of the carrier. 10 is a wiper finger, which may be of resilient metal such as spring-brass or which may be supported resiliently in any desired manner, said finger being mounted upon a bracket 11 fixed to the carrier 4, the finger 10 being insulated from the bracket 11 in any suitable manner. 12 is a metallic plate insulated. from the carrier frame and herein shown as lying in a substantially vertical plane, this plate being electrically connected with the finger 10. At the point 13 the side bar'4 of the carrier 4 isslotted and within said slot is pivoted, bymeans of a pin 14, an ear 15 extending from a thread finger comprising a plate 16 serving as a support for a rod 17 having a thread-engaging loop. The plate 16 is provided with a cam face 18 to the left of the pivot, as seen in Fig. 2 and with a pointed projection 19 extending to the right of said pivot. 20 is a leaf-spring secured to the carrier member 4 by means of a screw 21 or its equivalent, said spring having an outwardly curved portion 22 hearing against the cam face 18, the arrangement of parts being such that the spring tends to swing the plate 16 in a counter-clockwise direction as seen in Fig. 1., whereby to bring the pointed projection 19 into contact with the surface of plate 12. 23 isthe bobbin or spool of usual construction mounted within the carrier 4- and 24 indicates the strand leading from said spool and through the looped member 17, whence it proceeds to the braiding point at the center of the machine. Y

In the normal operation of the parts hereinbefore described,'the tension. ofthe strand 24 in passing from the spoolto the braiding point tends to swing the member 16 in a clockwise direction andto hold it in the position shown in Fig. 1. *Upon breaking of this thread or upon. its becoming slack, the member 16 is permitted to turn until it assumes the osition shown in Fig.2

whereby the 1 pointed element 19 is brought into contact with the surface of the plate 12. As the frame of the machine has electrical connection with one pole of the battery or other sourcev of electrical energy employed, and as the circuit is now complete through the carrier frame by the engagement of the element 19 with the plate 12, the stop motion is actuated and the machine brought to rest. i

Turning now. to Fig. 4, 25 indicates one of the brackets carried upon the top of the ring 1, and by means of which the spools 26 of the outer series are supported. 27 is a rod having its opposite extremities pivoted in adjacent brackets 25, and 28 is a finger fixed to said rod and provided at its outer extremity with a thread-engaging loop 29. Extendin from said bar 27 is a second finger 3O fi xed thereto and adapted to be brought into electrical contact with an insulated plate 31 mounted upon the upper part of the frame 1 between the brackets 25, said plate being electrically connected with the adjacent plate 6 hereinbefore referred to. If desired, however, several plates 31 may be interconnected electrically and the entire series placed in electrical communication with the central ring before referred to by means of a single conductor.

32 is a bracket secured to the outer side of the frame member 1 by means of screws 33, and 34 is a thread-guide upstanding from said bracket 32. 35 is a second thread-guide fixed to the outer portion of the bracket32 and from which the thread leads to the usual strand guiding lever employed in machines of this type and by means of which the thread iscaused to pass alternately over and under the bobbin carriers of the inner series. Such strand levers are clearly illustrated in the patent to Petersen No. 1,105,- 452 hereinbefore referred to. I

36, is a coil spring surrounding the rod 27 and having one of its ends fixed thereto, its opposite end as at 37 engaging with one of the brackets 25. The spring 36 is soarranged that it tends to turn the rod 27 with its fingers 28 and 30 in a counter-clockwise direction to bring the member 30 into contact with the member 31, whereby to comthen through the guide 35 to the strand carrier lever. Uponthe breaking or slackening of the strand from the spool 26, the spring 36 is permitted to act whereby the finger 30 is brought into contact with plate 31. and the machine is brou ht to rest in the manner above described.

It will be seen from the foregoing description that in accordance with the present invention, contact elements have been provided of a very simple construction and such as are capable of ready manufacture without the necessity for employing expensive or complicated tools, While at the same time the devices are found to be extremely efficient in use. The pointed projection 19 of the member 16 and the comparatively sharp ended finger 30 of the member 28 present contact surfaces of small area which tend to cut through any accumulation of lint on their cooperating contact surfaces whereby certainty of action is secured, while the simple spring mechanism employed for moving the contact elements into circuit-making position provides for the proper actuation of these parts regardless of the speed of the machine, the springs being of such a character that they are substantially unafiected by accumulations of lint or dust thereon.

I claim:

1. In a braiding carrier for use in braiding machines provided with electrical stop mechanism, in combination, a horizontal frame member, a device pivoted to said memher and provided with a thread-loop at its extremity, a projection upon one side of said device, a leaf-spring engaging said projection with its free extremity and having its other extremity fixed to said frame member.

2. In a braiding machine having stop mechanism, in combination. a braiding carrier mounted to revolve in a horizontal plane, a thread finger mounted in said carrier to swing in a substantially horizontal plane, said thread finger being provided with an inclined cam face, and a leaf spring secured to said frame and having one end engaging said cam surface.

3. In a contact-making device for braiding machines of the type provided with electrical stop-mechanism, in combination, a thread finger, means for supporting said threadfinger to swing in a horizontal plane, said thread finger being provided with an inclined cam face, a leaf spring having a curved extremity bearing against said surface and a contact element extending from said finger.

l. In a circuit-making device for electrical stop-motion for braiding machines, in combination, a pivoted thread finger, a projection extending to one side of the pivot thereof providing an inclined cam face, an actuating element engaging said cam face, and

a contact making member carried by said finger and extending in the opposite direction from said projection.

5. In a braiding machine having electrical stop-motion mechanism, in combination, a braiding carrier comprising a slotted frame member, a plate pivoted within the slot in said member to swing in a substantially horizontal plane, spring means for turning said member about its pivot, an angular contact element carried by said plate, a cooperating contact element mounted upon I said frame, but insulated therefrom, and a thread-engaging element mounted upon said plate. 7

6. In a braiding carrier for use in machines of the type employing an electrical stop mechanism, in combination, a horizontally slotted frame member, a threadengaging finger pivoted to swing in said slot, resilient means for swinging said finger in one direction, an acute angled projection extending from said finger and a contact plate mounted upon said frame member and insulated therefrom, said plate lying in the path of movement of said acute angled projection.

7. In a braiding machine of the type employing an electrical stop-n1otion in combination, a braiding carrier comprising a frame member, a bracket .mounted thereupon, an insulated contact plate secured to said bracket and a contact making element pivoted to said frame member, said element comprising an acute angle projection constructed and arranged to be brought into contact with said plate, spring means normally tending to turn said element whereby to bring said projection into contact with said plate, and a thread-engaging loop carried by said element whereby the latter may be swung in opposition to the action of said spring for breaking the circuit.

8. In a braiding machine having electrical stop-motion mechanism, in combination. a rotary frame element, a braiding carrier arranged to move in a direction opposite to that of said element, an insulated plate mounted upon said element, a source of electrical energy having one pole thereof electrically connected to said element and the opposite pole thereof connected to said plate, a resilient finger contact mounted upon said carrier, but insulated therefrom, said finger being constructed and arranged to contact with said plate, a thread finger pivoted upon said carrier to swin in a substantially horizontal plane, said thread finger being provided with a pointed contact element arranged to make electrical connection with said contact finger, and spring means normally tending to move said thread finger into position to make such connection.

9. A braiding machine of the type employing an electrical stop-motion comprising in combination a rotatable support, spool carrying means mounted thereon, an element pivotally supported by said means, oppositely directed members projecting from said element, one of said members constituting an. electrical circuit closer and be ing engageable with a fixed contact, a spring normally tending to turn said elee ment in a counter-clockwise direction whereby to urge said circuit closer into engagement With said contact and a thread engaging device carried by the other of said members whereby said element may be turned in the opposite direction by tension of thread engaging said device to prevent engagement of said circuit closer with the 10 fixed contact.

Signed by me at Boston, Massachusetts, this 26th day of July, 1920.

ANKER PETERSEN.

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