US1744020A - Fuse device - Google Patents

Description

Patented Jen. 14. 1930 oNrrsD s-TATEs l PATENT ortica ERNST Gf, K. ANDERSON, 0F EVANSTON, AND NILS A. TORNBLGM, 0F CHICAGO, ILLINOIS, ASSIGNGRS T0 APPLETON ELECTRIC COMPNY, A. CORPORATION 0F ILLNOIS FUSE DEVICE Application led dune 30,

rllie present invention relates to devices in which fuses are housed lwithin receptacles into which new fuses are adapted to be placed after the blowing of fuses originally present. rEhe object of the presentA invention is to produce a novel device of this kind comprising a few simple `parts that may be quickly and easily assembled or taken apart. i

The various features of novelty whereby our invention is characterized will hereinafter be pointed out with particularity in the claim; but, for a full understanding of our invention and of its objects and advantages, reference maybe' had to the following detailed description taken in connection with the accompanying drawing, wherein:

Figure 1 is an elevation of a device ar.- ranged in accordance with our invention, one of the terminal caps being shown in section; Figs. 2 and 3 are side elevations of the two body members of the structure separated from each other; Fig. 4 is al bottom view of the element shown inFig. 2, whereas Fig. 5 is a top view of the element shown in Fig. 3; Fig.l 6 is a longitudinal section through the ,device ready for use'; Fig. 7 is an end view of the device with the terminal cap removed;

Fig. 8 is a section taken on line, 8-8 of Fig. 6; and Fig. 9' is a plagi view of the fuse strip.

I body member or casing of insulating material between which is held a fuse exposed at the ends of thecasing, together with terminal members adapted to lit over the ends of the casing to hold the sections together laid together, form a cylinder.

aiid at vthe same time make good contact vwith the. endsof the fuse.

i In the arrangement shown, the'casin is made in two sections 1 land 2 whlch, w en central portion of each of thextwosections is preferably semi-cylindrical in form, hollowed `out on the flat sideso that when the two sections are placed together, as shown in Fig. 6,'there is formed between them a cham- Our improved device comprises a hollow The lmainv Aieee. ,serial ne. eaaecd.

endless groove 4 surrounding the cavity,4

while the other has a projecting led e or rib 5 adapted to iit into the groove. ases or other fluids, in order to pass between the chamber in the casing and the exterior, through the sides of the casing, must therefore travel through the grooves and around the ledges or ribs.

The two ends of one of the members, conveniently the member 1, are made cylindrical, as indicated at 6, 6 to permit the combined terminals and clamps to be placed over the same. A deep wide groove 7 extending longitudinally of the casing, is cut through each of the cylindrical end portions. The member 2 is provided at its ends with tongues 8, 8 adapted to -t into the grooves in the other section when the two sections are laid together.

terminals are screwed in place, they clamp the two halves or sections of the casing firmly together and at the same time make good contact with the turned over ends 10 of the fuse. The parts are preferably so proportioned that the portions of the fuse lying in the grooves are pressed down irmly by the overlying tongues, so that the fuse will 'beheld against twisting when' the terminals are applied. v

When a fuse blows it is desirable that the fumes be allowed to escape. To this end, we have provided a second set of grooves, 13, cut down through the bottom of the grooves 7,

each groove 13 extending from one end of the casing to theY vmain cavity 14 in the member 1. Furthermore, the bottom of each terminal cup is provided with a' hole 15 through the same. Consequently when a fuse blows, the

fumes may escape throu h the ooves 13 and i v7 through the holes 15.` g gr After a fuse has blown, the device may be lifted from the clips inwhich it is set, by

grasping the body of insulating material lying between the two terminals. Then,.1n

order to renew the fu`se, the cup-shaped terminals need only be unscrewed, whereupon the sections'of the casing may be separated from each other to permit a new fuse to be inserted. Then, when the terminals are again screwed in place, the device is ready for use.

The fuse is suiciently frail to enable the pressure of the filmes, upon blowing, to burst 15 through the thin end portions and escape through the holes 15 in the bottoms of the terminals. Normally, however, the ends of the casing are sealed by reason of the fact that the end portions 10 of the fuse are held 20 over the lends of the grooves 13 by the terminal members.

' While we have illustrated and described with particularity only a single preferred form of our invention, we do not desire to be 85 limited to the exact structural details thus illustrated and described; but intend to cover all forms and arrangements which come within the definitions of the invention constituting the appended claim.

so We claim rl' A container for a fuse comprising two semicylindrical pieces of insulating material the ends of one piece being in the shape o externally screwthreaded cylinders each having 35 a deep longitudinal notch extending through out the .length thereof in one side the other piece having at the ends tongues fitting into .said notches, the meeting faces of said pieces being shaped to produce a central closed chamber and seats for a1V fuse extending from o said chamber to the ends of the' container underneath said tongues, and'. metal caps screwed upon said cylindrical ends tohold said pieces together and engagethe ends of a fuse strip extending lengthwise between said p1eces. A 1

In testimony whereof, we sign this specification.

- ERNST G. K. ANDERSON.

' NILS A. TORNBLOM.

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