US48958A

US48958A - Improvement in devices for finishing threads

Info

Publication number: US48958A
Authority: US
Publication date: 1865-07-25
Anticipated expiration: 1882-07-25

Description

UNITED STATES PATENT TOBIAS KOHN, OF HARTFORD, CONNECTICUT.

Specification forming part of Letters Patent No. 48,958, dated July 25, 1865.

To all whom t may concern:

Be it known that I, ToBIAs KOEN, of Hartford, in the county of Hartford and State of Connecticut, have made new and useful Improvements in Devices for Finishing Thread; and I do hereby declare the following to be a full,clear,and exact description otthe nature, construction, and operation ofthe same, reference being had to the accompanying drawings, making part of this specification, in which- Figure l is a plan of theimprovement. Fig. 2 is a transverse section on the lineman, Fig.].

The same letters refer to corresponding parts in the two figures.

My invention consists in the peculiar form and position ofthe rollers in a traversing carriage, upon which rollers the thread is wrapped, so that as the carriage is reciprocated longitudinally the fuzz or loose liber is removed by friction and pressure, givinga smooth and iinished appearance to the thread.

To enable one skilled in the branch ot' manufacture to which my invention is allied toconstruct and use the saine, l will proceed to describeit.

A is a carriage provided with l ins B, which are inserted into the sides of the carriage in such a manner as to cross each other, viewing the device in end elevation or in the trailsverse section, Fig. 2. On these pins are loose rollers, C, of a concave shape, which move l'reely under the impulse of the thread or cord, which, being inserted through the guides D at each end,is wrapped once around each roller ofthe series, as shown in Fig. l. The thread being thus placed in position, the carriage is reciprocated longitudinally by any suitable means, whether by hand or by machine, and the etl'ect upon the thread is to wear off or rub down the loosely-projecting liber, by which additional strength and beauty is attained.

l am aware thatthis mode ot'tinishingthread is not new, as the same has been done by cylindrical rollers and by a large needle operatedV by hand; but in my improvement the rollers are concave on their faces, so as to cause the thread to chafe against itself in its passage round the rollers, which it would not be compelled to do were the rollers cylindrical. The

concave form, by giving the point of greatest depression the smallest diameter, causes the thread to slip naturally into it as the tension is applied from either direction, and thus the threads bear against each other.

Another point of improvement consists in mounting the rollers on axes, each of which is at right angles to the one next in series. The tendency ot the thread as it traverses upon the roller is to gradually inove'toward one end or the other, according to the direction in which it is rotating. By placing the adjacent axes at right angles they tend to correct this tendency in each other, as the deflection caused by thus traversing longitudinally on the roller is at right angles to the axis of the next roller, and consequently in a direction in which it cannot give way to accommodate the said deileclion. It is thus restrained within limilsof oscillation on either side of a central line parallel to the length ofthe carriage, and passing through each oneot' the rollers and through the openings in the guides. Thus, as I have said, the two objects are secured-one to cause the thread to chafe against itself, and the other to keep it within due bounds on the rollers. The pins carrying the rollers, being attached at but one end to the carriage, ali'ord a ready. means ot' placing the thread upon the rollers.

Having thus described my invention, what I claim therein as new, and desire to secure by Letters Patent, is

l. The described concave faced rollers on which to wrap the thread to be nished by the longitudinal motion ot the carriage on which the rollers are mounted.

2. Placing the alternate rollers ou axes at, or nearly at, right angles to cach other, so as to partially counteract the tendency ot' the thread to traverse lengthwise of the rollers.

The above specilication of my improved device for cleaning and finishing thread and other articles, signed this 15th day of June, 1865.

TOBIAS KOHN.