US1481483A

US1481483A - Contact device for braiding machines

Info

Publication number: US1481483A
Application number: US582159A
Authority: US
Inventors: Petersen Anker
Original assignee: AMERICAN WIREMOLD Co
Current assignee: AMERICAN WIREMOLD Co
Priority date: 1920-07-30
Filing date: 1922-08-16
Publication date: 1924-01-22
Anticipated expiration: 1941-01-22

Description

jan, 22,1924. 3,481,483

7 I A. PETERSEN CONTACT DEVICE FOR BRAIDING MACHINES Original Filed July 50 1920 Patented den. 22, 11924.

MOLD OGMPANY, OF

CQN'IACT DOE FOR BRAIDING 'cri mci application filed an so, 1920,

To all whom it may concern Be it known that I, ANKnR citizen of the United States of America, and resident of Winthro in the county of Suffolk and State of Elassachusetts, have invented new anduseful 1m rovements in Contact Devices for Braiding achines, of which the following is a specification.-

This invention pertains to braiding machines of the general type disclosed in the patent to Petersen No. 1,105,452, July 28, 1914, and relates more particularly to detector devices cooperable with the bobbins of the outer series and constituting elements of air-electrical stop mechanism by means of which the machine is brought to rest upon breakage or slackening of a, thread of the outer series, the present application being a division of my PatentNo. 1,430,680, granted October 3, 1922.

The object of the present invention is to provide a detector device which is reliable'in operation and substantiall unaffected by the presence of oil or lint, an at the same time of very simple and unexpensive construction. One arrangement suitable for attaining the above object is shown by way of example in the accompanying drawings in which Fig. 1 is a fragmentary side elevation of a braiding machine having the present improvements applied thereto; and

Fig. 2 is a fragmentar vertical cross section on the line 2--2 of ig. 1.

. The numeral 1 indicates the usual rotating frame or ring upon which the bobbins of the outer series are supported. This ring as herein shown comprises the inwardly directed flange member 2 having the downwardly depending ring 3 at its inner edge.

Parts 2 and 3 may be integral with the. ring 1 or secured thereto in any desired manner. Upon the upper surface of the flange 2 a se ries of pairs of brackets such as 4, 5 is secured, and each pair of brackets is provided with bearings for the reception of the opposite ends of the shaft or spindle 6 upon which the spool or thread mass 7 is mounted.

' A metallic ring 8 (or a series of separated plates if preferred is secured to the inner surface of the mem er 3, and from this ring, or from each of the several plates, electrical conductors .(not shown) extend to a ring located at the centre of the machine and form- Pn'rnnsnn, a

TFOBD, CONNECTICUT, A CQRPORATION OE CUNNEGTICUT;

. CHINE.

Serial No. 400,172. Divided and this application filed August 16, 1922. serial No; 582,159.

ing part of an'electrical stop motion circuit.

As illustrating suitableelectrical connections for-this purpose reference may be had to the patent to Petersen N 0. 1,072,984 wherein a desirable arrangement is shown in Fig. 10.

The ring 8 is insulated from the ring 3 b means of a layer of suitable material 9.

series of contact plates such as 10 (or a continuous ring if preferred) is mounted upon the upper surface of the flange member 2, being insulated therefrom by a layer of suitable material 9. Preferably one of the plates 10 is arranged between the bobbin supporting brackets 4, 5 of each pair, and each plate is electrically connected with the ring 8 by means of a conductor 11.

A shaft 12 is arranged to turn in bearings at its opposite ends in the brackets 4, 5 respectively, this shaft being arranged above and substantially parallel to the correspond ing plate 10. A finger 13 projects substantially radially from the shaft 12 and is of such a length that its free extremity may be brought into wiping engagement with the upper surface of the plate 10. A second fin er 14 also projects from the shaft 12 and is urnished with a yarn guide eye 15 adjacent to its free extremity. The finger 13 is relatively short and stiff as compared with the finger l4 and these fingers are preferably formed integrally from a length of wire which is coiled about the shaft 12 as indicated at 16 andwhich' may be secured thereto by means of solder or in any other suitable manner. A coil spring 17 surrounds the shaft 12, having one of its ends fastened to the shaft and the other end secured to one of the brackets, as for example the bracket 4. This spring is so arranged that it tends normally to turn the shaft 12 in a counter-clockwise direction as viewed in Fig. 2 so as to cause the end of the finger 13 to engage the plate 10.

A bracket 18 is secured to the outer face of the ring 1 at a point adjacent to each pair of brackets 4, 5 by means of screws such as 19. The uppermost of these -screws serves also to hold a thread guide finger 20 in operative position, the thread engaging portion of this,

ion

several brackets 18 and from this ring thread uide eyes such as 22 project, each guide eye ying substantially in the vertical plane of movement of the finger 14. a

The yarn Y from the-bobbin or thread mass 7 passes downwardly under the thread finger 20, thence through the thread e e 15 and then downwardly through the gu de 22 to the usual lever device (not shown) by means of which the thread from a bobbin of the outer series is caused alternately to pass over and under bobbin carriers of the inner series. Such levers are illustrated for example in the patent to Petersen No. 1,105,452.

In the normal operation of the machine the

fingers

13 and 14 are positioned as shown in full lines in Fig. 2, the tension on the yarn bein sufiicient to drag the finger 14 downwar ly against the tension of the spring 17.

If however during the operation of the machine the yarn should become slackened or should break, the pring 17 immediately swings the finger 13 downwardly into contact with the plate 10- thereby completing the electrical .circuit of the stop .motion mechanism and bringing the machine to rest. As the contact fin er '13 swings into engagement with the p ate 10 it tends to wipe off any accumulated oil or lint so that at each operation the contact finger forms a ood electrical contact with the plate.

he device thus provided is of simple construction and delicate in operation and may be applied to any usual braiding machine furnished with electrical stop mechanism.

What I claim and desire to secure by Letters Patent of the United States is:

1. A braiding machine of the type employing an electrical stop mechanism and comprising in combination an insulated contact plate and a pair of fingers extending substantially radially from a common axis parallel to said contact plate and simultaneously movable about said axis, one of said fingers being of such length as to permit its end portion to engage the surface of the contact plate and the other finger extending downwardly from its axis and having a yarn engaging element, and means normally tending to hold said first finger in contact with the plate.

2. A braiding machine of the type employing an electrical stop mechanism and comprising in combination a contact plate and a relatively short and still contact finger pivotally supported to swing in a' plane perpendicular to said plate whereby to bring its end into wi ing engagement with the plate, a second nger longer than the first and movab e simultaneously therewith, the second finger extending downwardly from its axis and having a yarn guide eye,and spring means tending to swing said. first finger into engagement with the plate.

3. A braiding machine of the type emagencies ploying an electrical stop mechanism and comprising in combination a rotatable support, spool carrying means mounted thereon, a rotary element carried by said supporting means, oppositely directed members projecting from said element, one of said members constituting an electrical circuit closer and being engageable with a relativel fixed contact, a spring normally tending to turn said element whereby to urge said circuit closer into engagement with said contact, and a thread enga ing device carried by the other of said mem ers whereby said element may be turned in the opposite direction by tension of thread engaging said device normally to prevent engagement of said circuit closer with the fixed contact.

4. A braiding machine of the type employing an electrical stop motion comprising a contact plate, a rotary shaft, a continuous length of wire coiled about the shaft and fixed there-to, one end of the wire projecting to form a finger so disposed that its end may be caused to engage the contact plate, and the other end of the wire constituting a second finger having a thread guide eye adjacent to its free extremity, and'a coil spring encircling the shaft and normally tending to turn the shaft whereby to cause the first named finger to engage the contact plate.

5. In a braiding machine of the class described, in combination, a rotatable spool carrying member, a shaft pivotally upported thereon, a length of wire secured to the shaft, one end of the wire projecting to form a contact finger, said finger having a contact element, an insulated contact plate for engagement by said element, spring means normally tending to maintain said element in contact with said plate, and the other end of the wire having a guide engageable by a thread under tension whereby to maintain said contact element and plate in normally separated position.

6. In a braiding machine provided with an electrical stop motion, in combination a rotatable frame member, a pair of spaced brackets mounted thereon constructed and arranged to support a thread mass, a shaft having its ends pivoted to turn in the respective brackets, a spring surrounding said shaft and tending constantly to turn the same, a thread-engaging finger fixed to said shaft and extending substantially radially therefrom, a contact finger extending from said shaft, and an insulated contact plate carried vby said rotatable frame member and lying in the path of movement of said second finger.

7. In a braiding machine of the class described, a rotatable spool carrier provided with an electrical contact element, a second contact element also carried thereby and mounted to move toward and from said first named element, and a thread-engaging latter is in normal position, and a second actuating finger for said second element thread guide arranged below said thread 10 whereby the latter may be held out of con eye.

6 tact with said first element, said actuating Signed by me at Boston, Mass, this 14th finger being rovided with a thread eye, day of August, 1922. a thread gui e arranged substantially in ANKER PETERSEN.

the horizontal plane of said eye when the