US1114654A - Fuse-cartridge. - Google Patents

Description

J. W. STEELMAN.

FUSE CARTRIDGE.

APILIUATION FILED my 16,1913

Patented 00's. 20, 1914 7 l 1.7, l. J

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UNITED STATES PATENT OFFICE.

FUSE-GARTRID GE.

Specification of Letters Patent.

Application filed May 16, 1913.

Patented Get. 28 191 i. Serial No. 768,100.

To all whom it may concern:

Be it known that I, Josnrn 'W. STEEL- )IAN, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements in Fuse-Cartridges, of which the following is a specification.

This invention relates to improvements in fuse cartridges and has particular applica tion to a cartridge wherein the fusible element may be renewed whenever the same has become burned out or otherwise mutilated.

ln carrying out the present invention, it is my purpose to provide a fuse cartridge which will embody among other features a tubular body preferably composed of insulated material and having the inner surfaces at the opposite ends thereof flared outwardly. and a pair of wedgeshaped blocks disposed within each end thereof and having the confronting faces thereof designed to grip the respective end of the fusible clcmcnt or strip, the ends of the tubular body being closed by means of caps which latter act upon the wedge-shaped blocks to force the same inwardly of the tube and so produce a clamping action upon the fusible element or strip.

It is also in purpose to pr wide a device of the class (escribed which will embrace the desired features of simplicity, efliciency and durability coupled with cbeapness of cost in manufacture and marketing and which may be readily assembled and dissembled so as to facilitate refilling of the cartridge.

\Viththe above and otherobjects in view, the invention consists in the construction, combination and arrangement of parts hereinafter set forth in and falling within the scope of the claim.

in the accompanying drawing; Figure 1 is a longitudinal sectional view through a fuse cartridge constructed in accordance with the present invention. the fusible strip being shown in edge elevation. Fig. 2 is a similar view taken at right angles to Fig. 1 showing the fusible strip and certain of the wedge blocks in plan. Fig. 3 is a perspective view of one of the caps, and Fig. 4 is a. similar view of a pair of cooperating wedge blocks.

Referr ng now to the accompanying drawing in detail. the numeral 1 designates awtubular body composed of insulatin mawedge blocks 4, the confronting faces of the blocks of each pair being: fiat as at 5 and are designed to receive the respective ends of a fusible strip 6 disposed longitudinally and centrally of the body 1. Threadedly engagmg each end of the body 1 is a cup-shaped cap 7 having the side wall thereof threadedinteriorly to engage the exterior threads in the respective end of the body, and the end wall thereof formed. with an aperture 8 coaxial with thetubulai; body 1 to receive the free end of the fusible strip 6 beyond the wedge blocks, the wall of such opening 8 being beveled or flared outwardly as at 9 so as to afford convenient opening for the lingers when the caps have been loosened and it is desired to refill the, cartridge. as when the fusible element has burnt out; 7

From the foregoing description takenih connection with the accompanying, drawing. the ccnstruction. mode of operation and mann r of employing my invention will lt e readily apparent.

It will be seen tha-t if have provided a fuse cartridge wherein the i fusible strip may be readily replaced and wherein the component parts may be readily disassembled when it is desired to clean or repair the cartridge, while when replacing a mutilated fusible strip, it is only necessa-l'y to loosen the caps at the ends of the tubular body so that the wedge blocks will readily receive the strip, the caps being subsequently tightened up so as to produce a clamping action between the confronting surfaces of the wedge blocks and the respective eud'of the fusible strip.

I claim:

A fuse cartridge comprising a tubular body of insulating" material having the inner surfaces of theends thereof flare-d utwardly and the exterior surfaces 'sc-rew tbreadctb'a pair of wedgeshaped bloclns mounted Within each end of said body and having fiat confronting faces, a fusible strip disposed lengitudinally of said body and having the opposite ends thereof ar ranged between he confronting faces of said hleeks, and cup-shaped caps having the side Walls thereof threadedly engaging the ends of said body and the end Walls thereof anertured to receive the free ends of said strip beyond said blocks, the apertures in n said caps having beveled Walls substantially as, and for the purpose, described.

In testimony whereof I aflix my signature in presence of two witnesses.

JOSEPH W. STEEL: KAN. Witnesses FRANK W. W ILIJAMS, GEORGE V. SCOTT.

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