US2704958A

US2704958A - Bottom weight carrier for braiding machines

Info

Publication number: US2704958A
Application number: US317046A
Authority: US
Inventors: August J Groh
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-10-27
Filing date: 1952-10-27
Publication date: 1955-03-29
Anticipated expiration: 1972-03-29

Description

A. J. GROH March 29, 1955 BOTTOM WEIGHT CARRIER FOR BRAIDING MACHINES Filed Oct. 27, 1952 IN VEN TOR. AUGUST J- GROH fl 'zwg/az'y United States Patent' BOTTOM WEIGHT CARRIER FOR BRAIDING MACHINES August I. Groh, New York, N. Y. Application October 27, 1952, Serial No. 317,046 1 Claim. (Cl. 87-56) This invention relates to bobbin or package carriers for braiding machines and, more particularly, to a bottom weight for such a carrie In such machines, the carrier is provided with a bottom weight which moves the thread or cord downwardly against the base or foot of the carrier which is often greasy, oily and dusty resulting in soiling the thread or cor In some of the carriers, the bottom weight is grooved or cut away at its bottom edge to provide a guide and support for the thread. This is objectionable as it weakens the weight at the place where it comes into contact with the base of the carrier and is likely to become damaged by constant hammering and jarring.

The present invention proposes to overcome these disadvantages by eliminating the groove or cutout at the lower end of the bottom weight and by providing a guide and support for the thread at a point remote from the bottom end so that the thread is not carried down into contact with the base of the carrier.

Another object of the present invention is to provide a combination of elements adapted for applying tension to the thread or cord in such a manner as to efliciently tension the same without rendering it liable to abrasion or injury through being caught in the moving parts of the tensioning mechanism.

Another object of the invention is to provide a bottom weight with a thread guide and support which is easily threaded and which supports the thread entirely out of contact with the surface of the carrier parts during its vertical movements to prevent soiling or abrading of the thread. 1

Still another object of the invention is to provide a bottom weight and thread guide and support for a carrier of this kind which may be cast in one piece.

It is a further object of the present invention to construct bottom tension weights for braiding machine carriers which are simple and durable andwhich can be manufactured and sold at a reasonable cost;

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

Fig. 1 is a perspective view of a carrier for a braiding machine embodying the present invention.

Fig. 2 is a front elevational view thereof.

Fig. 3 is a fragmentary side elevational view of the bottom end of the carrier.

Fig. 4 is a cross-sectional view taken on the plane of the line 44 of Fig. 1.

Fig. 5 is an enlarged perspective view of the bottom weight of the carrier.

In the embodiment of the invention shown in the accompanying drawings, the bobbin supporting platform is illustrated at 10, in Fig. 3. The carrier made in accordance with the invention is indicated at 11 and comprises a base or foot 12 which rests on the upper surface of the bobbin supporting platform. The base 12 is provided with a depending projection 13 which projects through an opening in the bobbin supporting platform. Integrally formed on the lower end of the projection 13 is a plate 14 which engages the under side of the bobbin supporting platform for the purpose of maintaining the bobbin carrier in an upright posit on on said supporting platform. The retaining plate 14 is provided with a depending projection 15 which is adapted to be selzllgagad by the lugs of the operating train of gears (not own The base 12 of the carrier is formed with a vertical extending spindle 16 which is adapted to receive a thread package or bobbin shown diagrammatically at 17, the lower end of said bobbin resting upon a cross-piece 18 formed on the base 12 of the carrier. Trunnions' 19 project from the cross-piece 18 for supporting the usual latch (not shown).

The carrier 11 is also provided with a vertically extending thread guiding post or standard 20, parallel to the spindle 16. The upper end of the post is formed narrower at 21 than the rest of its body portion to permit the entering of the top weight (not shown) thereon. Midway its ends, the post is formed with a guide opening 22 through which is threaded a thread 23 from the bobbin 17. On top of the post on one side thereof is a lead-oif eye 24 for the thread 23, and on its opposite side a lip or stop 25 for limiting the upward movement of the weight.

Slidably mounted on the post 20 is a one-piece bottom tension weight 26 for controlling the run of the thread 23 and for applying tensioning stresses thereto. The weight consists of an angled body 27 formed with spaced elongated

guide shoe members

28 and 29 disposed at an acute angle toward each other and connected at their bottom ends by a bridge portion 30. The shoe members are formed at their opposed adjacent inner ends with angled grooves 31, the walls 32 of which guide the movements of the weight along the side end surfaces of the post. The outer ends of the walls 32 overlap the post to prevent lateral displacement thereof or removal therefrom. The clearance between the walls of the grooves and the post is such as to permit free movement of the weight along the post.

Formed integrally with the guide shoe member 28 is a flat lateral arm 33 extending across the space between the shoe members. A bayonet slot 34 is formed in the lower end of the arm in line with the space between the guide shoe members and opens downwardly. The walls of this bayonet slot serve as a guide and support for the yarn thread 23. The outer free end of the arm 33 overlaps the inner end of the shoe member 29 but is spaced outwardly therefrom to provide a clearance 35 communicating with the bayonet slot 34 whereby the thread 23 can be readily threaded into the slot.

In operation, the thread 23 is led from the bobbin 17 through the thread guide opening 22 in the post 20, thence downwardly along the post and behind the arm 33 and outwardly through the bayonet slot 34 in the arm and thence upwardly through the lead-off eye 24 at the top of the post, to the braiding mandrel of the machine.

As the machine operates, the loop formed in the thread 23 is shortened which causes the tension weight 26 to move upwardly on the post 20. When the pressure on the weight is released, the weight falls by gravity to a lower tensioning position and the same operation is repeated.

In the present construction, tioned remote from the bottom end of the tension weight 26 so that the lowermost travel of the loop of the thread 23 is to a point remote from the base 12 of the carrier so that there is no chance of the thread coming into contact with dirt, grease or other foreign matter and becoming soiled. Furthermore, the outer free end of the guide arm 33 is spaced from the shoe member 29 so as to permit ready threading of the thread, and the thread is maintained out of contact with the post to prevent soiling or abrading of the thread. The bottom end of the tension weight 26 is imperforate where it contacts the base 12 of the carrier so that jarring and hammering will not tend to damage or weaken the weight.

While I have illustrated and described the preferred embodiment of my invention, it is to be understood that I do not limit myself to the precise construction herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claim.

Having thus described my invention, what I claim as the guide arm 33 is posinew, and desire to secure by United States Letters Patent is:

In combination with a braiding machine having a thread receiving Spindle and a thread guiding post; a tension weight slidable on said guiding post; said tension weight comprising a pair of diverging guide shoes, bridge means joining said guide shoes at the lower edges thereof, said guide shoes having vertical grooves therein for sliding engagement with said guiding post, and an arm secured on one guide shoe above said bridge means and extending across towards the other guide shoe and slightly spaced therefrom, said arm having a bayonet slot whereby the thread is slid between the space formed between the arm and the other guide shoe and beneath said arm into said bayonet slot to tension said thread, and said arm being intermediate the guide shoe to whichit is secured and normal to the length of said shoe.

References Cited in the file of this patent UNITED STATES PATENTS 623,514 Cabezola Apr. 25, 1899 1,742,124- Blaisdell Dec. 31, 1929 1,742,125 Blaisdell Dec. 31, 1929 2,043,285 Dennis June 9, 1936 2,144,991 Mossberg Jan. 24, 1939 2,437,539 King Mar. 9, 1948