US925539A - Fuse-plug. - Google Patents

Description

A. WEBER; Jn.

FUSE PLUG. APPLIOATION FILED JAN. 16, 1909.

5 39. Patented June 22, 1909.

' WITNE'EIEEE] INVENfi-UR @MM W 2 SHEETS-SHEET 1.

A. WEBER, JR. FUSE PLUG.

APlfI-IOATION FILED JAN. 16, 1909.

925,539 Patented June 22,1909.

2 SHEETS-SHEET 2 M/fiNEESEE I I T1216 I INVENTUR v LBOMMJ' 'AUGUST WEBER, JR, OF SCHENECTADY, NEW

FUSE-PLUG.

Specification of Letters Patent.

l atented June 22, 1909.

Application filed. January 16, race. Serial No.

To all whom inay concern:

B e' 1 known that I, Aueusr WEBER, Jr., a. cltlzen of the United States, residing at I Schenectady, county of Schenectady, and

Statdof New York, have invented certain new and useful Improvements in Fuse-Plugs,

ol which the followi'ng is a'specification.

The invention relates to such improvemerits and borisists oi the novel construction,

and combination of parts hereinafter dc,-

scribed and subsequently claimed.

Reference may be had to the accompanying drawings, and the reference characters fmal'ked thereon, which form a part of this specification. A

Similar characters refer to similar the. several figures therein.

Figure 1 otthe drawings is atop plan view of the base of my improved fuse-plug. Fig,

2 is a bottom plan view of the same. 3

parts in is a View in side elevation of the same. Fig. 41s a central, vertical section of thesame taken ontliebroken line 44 in Fig. 1. Flg. 5 is a central, vertical section of the same taken on the broken line 55 in Fig. 1.

Fig. 6 is a sectional View similar to. Fig. 5,

showinglthefuseplug complete. Fig. 7 is a sectionaljwiew similar to Fig.4, showing the fuse-plug complete. Fig. 8 is a horizontal sectionof the plug taken on \the broken line 88 in Fig. 7, viewed in the direction of the Fig. 9 is a bottom plan view of the. cap detached, Fig. 10 is aview in side elevation of the same' Fig. 11 is a central, vertical section of the same taken on the broken line 11-11 in Fig. 9. i

' The invention relates to cap-covered fuseplugs having provisionffor the escape of gases under pressure, due to the destruction of the fuse by an excessive current.

Theprincipal object of the present invention is to cause 'the escaping gases to traverse a more direct or devious route in escaping from the interior of the plug.

Other objects of the invention will appear connection with the following description. Referring to the drawings, wherein the invention is shown in its referred form, the

o low base, 1, of inclosed y a cap, 2, an exterior contact-member, 3, on its inner end, an inclosing screwshell, 4, adapted to connectwith a suitable socket, and to form the other contact-mam her, and an inclosed l'use, 5, conn: tir said -.aonta( :t-members. The hollow ha..-e i..- prefthe tongue, 16, v;

thereof form harrie erably made of dieanolded )orcelain of en eral cylindrical i'orm, and has extending transversely of its interior a partition, 6, extending from the inner end of the plugpartway to the outer open end thereof, whereby the inner end of the plug is divided intotwo chambers or pockets. The fuse, 5, extends over the partition, s, and is soldered or otherwise secured at one end to thesplit end of a post, 10, which projects from. the exterior contact mernlmr, 3, through an aperture, 8, interioriy of the pi and at its other end to .ch an integral part of the screw-shell, i, projecting through an aperture, 7, in. the wall of the base of the plug. The shell, 1, is adapted toreceive the inner end of the base, upon which it is secured by introvertlng side portions, 12, of the shell into side recesses, 12), formed in the exterior of the base. i

The base is provided with a pair of ventilating apertures, 20, which extend longitudinally through the wall of the base, and open exteriorly thereof adjacent to the respective recesses, 13. These ventilating apertures also form openings in the outer end-face of the .base, Where they communicate with the re- 20, to a considerable distance from said ventilating apertures, the ends of said grooves remote from the respective ventilating apertures communicating with the interior of the base at, The grooves, 21, are formed between a peripheral annular flange, 23, on the outer end ofthe base, ano segmental flanges 24, also formed on the outer and of the base, which segmental flanges or continuations 1 rior of the base and the respective ventilating apertures, 20, where the same form openings in the outer end of the base. The cap, 2, is adapted to cover the grooves, 21, and to co- (werate with the respectivebarriers, 25, to .3 i grooves to the interior of the base at points opposite the respective ventilating apertures 20. The cap, 2, comprises in. part a disk of mica, 29, which extends across a central aperture, 28, in the end wall of the cap. The body of the cap is preferably formed of sheet-metal, and adapted to be secured upon the outer end'of the base by introverting side portions, 30, of the cap-flange intoside recesses, 3 l, formed in the exterior of the base near its outer end.

25, between the inte'- are forced into the respective recesse niately at the middle or To facilitate the introversion o ortions, 30, of the cap l'lange, Sli formed in said flange extending an tially thereof at points opposite the no, tivs r cesses, 31, and portions of said ii extending from the edge thereof to said slits hove deportion of the molten metal I melting oi the to v on roL L a; ventilating apertures, bile lrec escape is provided. for the heated prcdu by the melting of the What I claiin as new and desire to secure by Letters Patent is-- 1. A base oi iusulzding 11') ruseplugs provided in. its enter em with a ventilating groove eornnnu'i interior of ie base aperture amending dinally throng v opening exterior-1v the rier formed by a wall of said groove ing aperture 'li base of" plugs havin on 1 oated annular cated segm ntal i annular lli eating at the or i i with the inter-1o i i cl ase, provided with a ventilating 111g ,l'lOlll said groove at longitudinally tlirou h D and opening exteri 3. A base oi insulating material for plugs having on its outer end an e located annular :ilan e and .ddlz

1 1: I, l rioriy located segmental dang respectively, from said annular grooves in the outer thereof.

i. In a device of the class described, the

combination with a base of insulating material provided in' its outer end-surface with a ventilating groove communicating with the interior of the base, and with a ventilating ape 'e extending from said groove longiiuiy through the wall of the base, and open 1g eXte-riorly thereof, and having a bari formed by a continuation of the inner i. all of said groove, separating said ventilating aperture from the interior of the base; of a cap attached to the outer end of said base, and cooperating with said barrier to close said groove to the interior of. the base, at a point opposite, said ventilating aperture 5. .ln fuse-plug, the combination with a base of insulating material having an intericil r located partition, and provided in its ouh end-surface with aventilating groove mmunicating with the interior of the base, Y .h a ventilating aperture extending .i said groove longitudinally through the of the base, and opening exte'riorly not, and having abarriei' formed by a nustion of the innerwall of said groove, lar ting said ventilating aperture from the of the base of a pair of exterior conienibers attached to said base, and

res in said base, interiorly thereof, on c ip-Jade sides or said partition; a fuse ex- 1 tending over said partition and connected at i its ends to said respective terminals and :1.

attached to the outer end'of said base, cooperating with said barrier to close groove to the interior of the base, at a t opposite said ventilating aperturo.

i testimony whereof, I have hereunto set i my hand this 11th dav of January, 1909.

AUGUST WE1ER,'J1=.

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1' C LAwsox,

AEEL- l1. MALLoRL terminals extending through suitable'

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