US1196079A - Tension device - Google Patents

Description

W. GANOVA.

TENSION DEVICE.

. APPLICATION FILED JUNE 19. 1916 1,1 96,079. PatentedAug. 29,1916.

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WILLIAM CANOVA, OF PATERSON, NEW JERSEY.

TENSION DEVICE.

Specification of Letters Patent.

Patented Aug. 29, 1916.

Application filed June 19, 1916. Serial No. 104,400.

To all whom it may concern:

Be it known that I, l/VILLIAM CANOVA, a citizen of the United States, residing at Paterson, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Tension Devices, of which the following is a specification.

This invention relates to shuttle tension means of the class including two coacting series of thread guides one series of which is a part of a. pivoted spring-held device normally held retracted from the other, and its object is to improve the device named by making it cheaper to manufacture and lighter in weight, and hence better adapted to be used with the weaker grades of weft or filling. than the usual form of such devices, which are made of twisted wire.

The improved device may be used in any shuttle already equipped with pins or the like affording the stationary series of thread guides. It may, if desired, and in the preferred form is stamped out of a single piece of metal, which is bent into the proper shape to produce the usual longitudinal bar and laterally projecting thread-guiding loops, and a bearing portion and a spring-attaching arm at one end. I

In the accompanying drawing, Figure 1 is a view showing the improved tension device in side elevation and operatively arranged in a shuttle, the near wall of which is broken away; Fig. 2 shows the blank from which the device is preferably made; Fig. 3 is a top plan view of the completed device; Fig. 4 is an end elevation thereof; and, Figs. 5 and 6 are side and end elevations of a modified form of the device.

A sheet metal blank is shown in Fig. 2 as comprising the parallel spaced elongated portions a and the integral parallel spaced connecting portions 5 and at the corresponding ends of theportions a the outwardly projecting portions 0; at said ends holes d are formed in the material. From this blank the tension device may be formed as follows: The portions a a, by bending the portions 6 on a common axis parallel with the portions a, so as to form of the portions Z) annular eyelets e, are brought into such relation as to lie in close proximity to each other and side by side, as shown best in Fig. 3, thus producing the longitudinal or bar part 7 of the device. In order to give the bar part 7 the proper strength without increasing weight the portions a a are at some stage in the operation of forming the device longitudinally channeled or made substantially semi-cylindrical, preferably so that when said portions are brought side by side to form the bar part f their concave sides will be inward, or face each other. It is also preferable to channel the portions 6 so that when they are formed into the loops e their convex sides will be inward, so that they will present to the thread rounded surfaces and so not abrade or cut the thread.

In the operation of forming the device, the ends of the blank from which the portions 0 project are bent out of the plane of the blank so that in the finished device they appear deflected from each other, as at g g; the portions 9 9- have the holes (Z therein and, being spaced from each other, they produce a laterally extended bearing to receive the pivoting pin it in the shuttle i. The portions 0 c in the finished device are brought together to lie side by side and are then together bent into the form of an eye 7', adapted to receive the usual elastic band 70 or equivalent spring which is attached to the pin Z of the shuttle and is normally adapted to hold the tension device in the position shown in Fig. 1, where the device is retracted with reference to the stationary series of thread guides m. If desired, only so much of the device as includes the bar f and thread guiding loops 6 may be used, in which case a wire is bent into such a shape as to produce a bearing portion a, a spring attaching eye 0 and a shank p, the latter being adapted to be fitted into one end of the bar 7 as shown in Fig. 5. It will be understood that the bearing portion n is adapted to receive the pivoting pin it and the eye 0 to have the spring is attached thereto, this form of the device then being arranged and operating substantially the same as that shown in Fig. 1.

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

1. A pivoted shuttle tension device comprising two longitudinal members lying for the major part of their length parallel and in close proximity to each other and side by side and affording at one end a pivoting point and annular loops integrally connecting and projecting relatively laterally from said members at different points in the length thereof.

2. A pivoted shuttle tension device con1- prising two longitudinal semi-cylindrical members lying for the major part of their length parallel and in close proximity to each other and side by side with their con- 7 cave sides inward and affording at one end a pivoting point and loops integrally connecting and projecting relatively laterally from said members at different points in the length thereof.

3. A pivoted shuttle tension device comprising two longitudinal members lying for the major part of their length parallel and in close proximity to each other and side by side and loops connecting and projecting laterally from said members at different points in the length thereof, corresponding end portions of said members being deflected away from each other and forming in the deflected portions spaced bearizng points.

4. A pivoted shuttle tension device formed of sheet metal and comprising two longitudinal members lying for the major part of their length parallel to each other and side by side and affording at one end a pivoting point and loops integrally connect ing and projecting relatively laterally from said 7 members at different points in the length thereof, one of said members having an integral relatively lateral projection at one end affording a spring-attaching arm.

5. A pivoted shuttle tension device formed of sheet metal and comprising two longitudinal members lying for the major part of their length parallel to each other and side by side and affording at one end a pivoting point and loops integrally connecting and projecting relatively laterally from said members at different points in the length thereof, said members having integral relatively lateral projections at one end together bent into an eyelet and affording means to which to attach a spring.

In testimony whereof I affix my signature.

WILLIAM GANOVA.

Copies of this patent maybe obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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