US924093A - Electric-fuse case. - Google Patents

Electric-fuse case. Download PDF

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Publication number
US924093A
US924093A US4550?308A US924093DA US924093A US 924093 A US924093 A US 924093A US 924093D A US924093D A US 924093DA US 924093 A US924093 A US 924093A
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US
United States
Prior art keywords
case
fuse
electric
holder
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US4550?308A
Inventor
Thomas E Murray
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Individual
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Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/044—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified
    • H01H85/045—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified cartridge type
    • H01H85/0454—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified cartridge type with screw-in type contacts

Definitions

  • the invention relates to an electric fuse case or plug, and consists in the construction were particularly pr ted out in the claim, -ereby the holder containing the fuse is dered removable from the case, and hereby access to said holder, when seated in said case, is prevented.
  • Figure 1 is a top view of my fuse case.
  • Fig. 2 is a section on the line 1;, w, of Fig. 1
  • Fig. 3 is a longitudinal section of the fuse holder.
  • the tubular case A is preferably cylindrical and made of porcelain. It is closed at one end, as shown at B. A portion of the case is threeded and covered with the metallic contact sleeve C. Above the sleeve 0 me he o. flange D which rests on the usual soc et in which the case is received. In the bore of the case, and on the inner face of the closed end B is a metal contact plate E. A conducting strip F, received in a recess in the side of the bore and in a downwardly inclined passage G in the case Wall, electrically connects the plate E to the threaded contact sleeve (1.
  • the fuse and holder shown separately in Fig. 3, is of known construction, and consists of a preferably porcelain tube H provided With a inetal cap I, J at each end, to'which ca s the fuse strip K is connected.
  • the tulle is filled with pulverized magnesia, talc or other shock absorbing non-combustible material.
  • the fuse and holder is inserted in made in the closed end of the case for the her the bore of the case A, shown in Ii i that the cap I, at one end of 1 makes contact with plat trance to the bore is contracted so cap J, at the other end of tightly in theopen n holder is preventec bore when the inse- /V hen the i use case is see-ted in t dicated by dotted lines, Fig. 2, t. end of cap 5 makes electrical conne the usual contact piste L at l the socket; so that circuit i..- en close cap J through fuse strip rt, plate A F threaded sleeve (1, 21.1 so to the socket sleeve M, dotted lines.
  • a hole N nay he the in sertion of a pin conveniently to drive the fuse holder out of the case, when its removal therefrom is desired.
  • a tubular fuse case formed of a single piece of fictile material closed at its upper end and having a circumferential flange, a screw threaded portion below said flange, a threaded metal sleeve on said tnreaded portion, a contact plate within said case and on the closed end thereof, and a conducting strip extending from said plate through the Wall of said case "nelo said flange and se-- cured to said sleeve.

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  • Fuses (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Description

T. E. MURRAY. ELECTRIC FUSE CAWXSE. APPLICATION FILED SEPT.28,1908.
fat nted Jana 8, 5.909.
QZZ 511 im-O I UNlThll tilliflt.-.
THOMAS E. MURRAYY, OF
NEW YORK, N. Y.
ELEC'EEICFUSE CASE n eeeoes.
Specification of Letters Patent.
Patented 'uno 8,
To all whom it may concern Be it known that I, THOMAS E. MURRAY, citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a certain new and useful Improvement in Electric-Fuse Cases,'otwhich the following is a specification.
The invention relates to an electric fuse case or plug, and consists in the construction were particularly pr ted out in the claim, -ereby the holder containing the fuse is dered removable from the case, and hereby access to said holder, when seated in said case, is prevented.
In the accompanying drawings-Figure 1 is a top view of my fuse case. Fig. 2 is a section on the line 1;, w, of Fig. 1, and Fig. 3 is a longitudinal section of the fuse holder.
Similar letters of reference indicate like parts.
The tubular case A is preferably cylindrical and made of porcelain. It is closed at one end, as shown at B. A portion of the case is threeded and covered with the metallic contact sleeve C. Above the sleeve 0 me he o. flange D which rests on the usual soc et in which the case is received. In the bore of the case, and on the inner face of the closed end B is a metal contact plate E. A conducting strip F, received in a recess in the side of the bore and in a downwardly inclined passage G in the case Wall, electrically connects the plate E to the threaded contact sleeve (1.
The fuse and holder, shown separately in Fig. 3, is of known construction, and consists of a preferably porcelain tube H provided With a inetal cap I, J at each end, to'which ca s the fuse strip K is connected. The tulle is filled with pulverized magnesia, talc or other shock absorbing non-combustible material. The fuse and holder is inserted in made in the closed end of the case for the her the bore of the case A, shown in Ii i that the cap I, at one end of 1 makes contact with plat trance to the bore is contracted so cap J, at the other end of tightly in theopen n holder is preventec bore when the inse- /V hen the i use case is see-ted in t dicated by dotted lines, Fig. 2, t. end of cap 5 makes electrical conne the usual contact piste L at l the socket; so that circuit i..- en close cap J through fuse strip rt, plate A F threaded sleeve (1, 21.1 so to the socket sleeve M, dotted lines. A hole N nay he the in sertion of a pin conveniently to drive the fuse holder out of the case, when its removal therefrom is desired.
It will be apparent that by this construe tion the fuse and its holder is cornpletelyinclosed in the case A and socket, so that access thereto is impossible without removing the case from the socket.
I claim:
A tubular fuse case formed of a single piece of fictile material closed at its upper end and having a circumferential flange, a screw threaded portion below said flange, a threaded metal sleeve on said tnreaded portion, a contact plate within said case and on the closed end thereof, and a conducting strip extending from said plate through the Wall of said case "nelo said flange and se-- cured to said sleeve.
in testimony whereof l have aliixed my signature in presence of two Witnesses.
THOM 5.8 M EBAY.
Witnesses:
Gnrz'rnnnn T. Pon'rnn, hlAY '1. McGAnRr.
US4550?308A Electric-fuse case. Expired - Lifetime US924093A (en)

Applications Claiming Priority (1)

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US924093TA

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675444A (en) * 1952-04-21 1954-04-13 Shapiro Hyman Safety fuse and adapter for electrical appliances
US4926153A (en) * 1989-06-02 1990-05-15 Cooper Industries, Inc. Ceramic fuse wire coating
US5262750A (en) * 1989-06-02 1993-11-16 Cooper Industries, Inc. Ceramic coating material for a microfuse

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675444A (en) * 1952-04-21 1954-04-13 Shapiro Hyman Safety fuse and adapter for electrical appliances
US4926153A (en) * 1989-06-02 1990-05-15 Cooper Industries, Inc. Ceramic fuse wire coating
US5262750A (en) * 1989-06-02 1993-11-16 Cooper Industries, Inc. Ceramic coating material for a microfuse

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