US1479831A

US1479831A - Braiding carrier

Info

Publication number: US1479831A
Application number: US597760A
Authority: US
Inventors: Rahm Robert Carl
Original assignee: BERKS ENGINEERING Co Inc
Current assignee: BERKS ENGINEERING Co Inc
Priority date: 1922-10-30
Filing date: 1922-10-30
Publication date: 1924-01-08
Anticipated expiration: 1941-01-08

Description

Jan. 8 1924.

R. C. RAHM BRAIDING CARRIER Filed Oct. 30, 1922 gwucntoz Fatented Jan. 8, i924.

ROBERT CARL EAHM, F WYOMISSING, PENNSYLVANIA, ASSIGNOR T0 BERKS EN- GINEERING- COMFANY INQ, PENNSYLVANIA.

OF READING, PENKSYLVANIA, A CORPORATION OF I BRAIDING CARRIER.

State of Pennsylvania, have invented certain new and useful Improvements in Braidmg Carriers, of which the following 1s a specification.

My invention relates to braiding carriers,

and my main object is to avoid twisting of the yarn as ordinarily produced by the travel of'the carrier about the race-ways. The invention is fully described in connection with the accompanying drawings illustrating a complete carrier in preferred form, and the novel features are clearly defined in the subjoined claims.

Fig; 1 is a front elevation of my improved carrier, embodying all the features of my invention.

Fig. 2 is a corresponding partly-sectional side elevation, looking in the direction of arrow 2, Fig. l; the bobbin being removed, the stopper ring shown in lowered position, and the raised position of the bobbin-engaging pawl being indicated.

' Fig. 3 is a top view corresponding with Fig. 2, the bobbin beingindicated in dotted lines.

Fig. 4 is a cross-sectional View on the line 4l1 ofFig. 2.

Fig. 5 is a diagrammatic view illustrating the automatic adjustment of the bobbinholder portion of the carrier relative to the raceway engaging portion.

The usual carrier commonly employed in braiding machines, in its serpentine'travel about the race-ways, produces a harmful twist to the delivered yarn, either tightening or loosening the fixed twist thereof, causing noticeable defects in the finished fabric and weakening the yarn to the extent of pro ducing frequent breaking and consequent interruption in the economic continuous operation of the machine. My improved carrier is particularly designed to overcome this twisting action in a simple manner, and consists, as shown in the drawings, of a raceway engaging base portion 5, and a bobbin holder portion freely rotatable thereon and actuated by a tensioned yarn, as hereinafter fully described, so as to prevent such twists. The base portion 5 may be of any well known shape to engage in the raceway of the machine and be traversed thereabout by the usual drive gears, though the specific form indicated is particularly applicable to the type of machine shown in ggzent No. 1,446,127 issued to me Feb. 20,

The base 5 is formed, as shown, withan upwardly extending central post 6, axially apertured at'7, and preferably provided with top and bottom ball bearings 8 and 9, for the shaft 11 of the bobbin holder portion 10, so as to carry the latter freely rotatable on said base portion.

The portion 10 is formed with a vertical bobbin-supporting post 15 and a parallel slide-carrying post 16,- both preferably .ec-

centric to the axis of rotation as shown, and the latter having spaced bearing

lugs

17 and 18 for a slide rod 22, an'oppositely extending intermediate guide-eye 19, and a top extension 20 with a yarn-delivery guideeye 21. 1

The bobbin is carried by post 15, and

it, or its holder, is provided with the usual notched tooth rim 26 for engagement of a latch 27 to regulate its unwinding movement on said post. This latch27, as shown, is pivotally mounted at 28 inthe slotted upper end of post 25, and has a rearward extension 29 adapted to overlie the bobbin aperture and limit verticalmovement of the latter due to usual lifting strains imparted by the unwinding yarn. The latch hasa flattened bearing edge 30 for a springpresscd plunger 31 carried in the hollow end of post'15, as shown, to normally position said latch in notch engaging position,

but it'may be forcibly swung into vertical post ahnement, shown in dotted lines in Fig.2, to remove or replace a bobbin, the

plunger 31 being depressedby extension 29 and seating on the squared end of the latter to retain the latch in this raised position.

This latch 27 is lifted intermittently in well known manner as the feed of yarn requires, by a yarn tensioning slide 35, having a guide eye 36, and vertically shifted on its slide post 16 into direct lifting action on the end of said latch, as shown, by the yarn engagement in said eye 36 acting against the regulating tension of a spring 23 on rod 22 bearing on a rod-engaging extension 38 of said slide. Convenient adjustment of the tension of, spring 23, desirable I manner one or other of the arms 53 for variations in working requirements, is preferably provided for as shown by notches in rod 22 in which the coil spring tooth 41 of spring tensioning collar 42 engages; said tooth being disengageable by a partial rotary movement of said collar to" free the latter for vertical adjustment.

To provide for the usual automatic stopping of the machine upon the breaking of a yarn, I provide a stopper device, preferably for the type of carrier indicated, in the form of a stop ring as shown, loosely strung upon the post 7 and rotatably carried by the extended rod 22; vertical movement of said ring as imparted by yarn slide 35 being limited by rod enlargement 51 movably in bearing lug 18, the upper end thereof forming a seat for spring engaged slide extension 38 and the flanged lower end seating against said lug when rod is fully raised. The slide 35 normally holds rod 22 and its stop ring 50 in fully raised position shown in Fig. 1, but upon a break in the yarn the. spring will depress this ring to the position shown in Fig. 2 when it will lie in. the path of andv actuate in well known of stop motion actuating rod 5% shown.

The yarn 55 from bobbin 25 passes through fixed guide eye 19 of slide carrying post 16,. guide eye 36 of yarn slide 35, and delivery eye 21, to the braiding point 56; slide 35 being raised by the pull of the yarn to lift stop ring 50 out of the path of arms 53 by compression of spring 23, and the regulated tension of the latter moving said slide to take up slack and actuate latch 27 as required to feed additional yarn for the bobbin as will be readily understood.

The guide eye 21, located eccentric to the axis of rotation of the bearing shaft 11, will effect a turning movement of the bobbin holder portion 10 upon the base portion 5 due to the pull of the tensioned yarn extending therefrom to the braiding point as. clearly seen in Fig. 3 and diagrammatic Fig. 5 such turning movement preventing twist of the yarn ordinarily imparted by the travel of the carrier about'the race-way, particularly occurring in lace braiding machines where carriers may rotate on the same gear for a number of revolutions. As clearly seen in Fig. 5, this pull of the yarn will con stantly turn the freely movable carrier por tion 10 so that its eccentric eye 21 will be automatically maintained in radial alinement with the braiding point 56 and pivotal axis of bearing shaft 11, irrespective of the turning action imparted to base portion 5 by the race way engagement of the latter. To effectively insure and increase the turning pull of the yarn, I preferably set the delivery eye 21, with its aperture arranged approximately at right angles to the axis of the bobbin, as shown, so that the tensioned yarn due to friction caused by the bend thereof will first naturally swing the bobbnrcarrier until its eye is in radial alinement.

My improved carrier thus fully described provides in a simple, effective, and automatic manner for continuous feed of yarn under regulated tension, and the positive elimination of yarn twist, insuring in practice, long continued uninterrupted economical operation of the machine, requiring little attention due to breaks, and producing an unimpaired fabric. Yarn changes may be quickly made due to the vertically held latch 27, or, if desired, the entire holder portion 10 may be removed and another substituted without disturbing the base portion 5; and the rotatable stop ring 50 is immediately effective upon a yarn break in any position of the holder portion 10.

It will be understood that the base portion 5 may be changed as required to suit the particular braiding machine, and modification within the spirit of the claims readily devised, and I do not desire to limit myself to the specific construction shown and described.

V3 hat I claim is:

1. A braiding carrier comprising a racewayengaging base portion, and a. bobbinholder portion freely rotatable thereon so as to be automatically positioned on said base portion by the tension of the yarn eX- tending from the bobbin to the braiding point.

- 2. A braiding carrier comprising a raceway engaging base portion; and a bobbinholder portion freely rotatable thereon and having a yarn-delivery guide-eye located eccentric to its pivotal axis, whereby said guide-eye A is automatically maintained in radial alinement with the braiding point and pivotal axis by the yarn tension.

8. A braiding carrier comprising a raceway engaging base portion, and a bobbinholder portion freely rotatable thereon ;'said rotatable bobbin-holder portion having a yarn-delivery guide-eye located eccentric to its pivotal axis and set with its aperture axis approximately at right angles to the axis of the bobbin.

4. A braiding carrier comprising a race way engaging base portion and a bobbinholder oortion freely rotatable thereon, said rotatable portion carrying a. thread-tensioncontrolled slide rod adapted to serve as a stop device.

A braiding carrier comprising a race way engaging base portion and a bobbinholder portion freely rotatable thereon, said rotatable portion carrying a thread-tensioncontrolled slide rodwhich is provided with a stop ring encircling said base portion.

6. A braiding machine carrier having a fixed post, a notched'rod slidably carried thereby, a yarn-actuated slide with a rodengaging extension and a tensioning spring said rod bearing on said extension, and a thereon bearing on said extension and havtension adjusting spring-engagingcollar 10 ing a notch engaging detent disengageable having a spring-pressed notch engaging by a partial rotation thereof. tooth disengageable by a partial rotation of 7 A braiding machine carrier having a said collar. v fixed post, a notched rod slidably carried In testimony whereof I aifix my signature. thereby, a yarn-actuated slide with a rod- .engaging extension, a tensioning spring on ROBERT CARL RAHM.