US2465079A - Enclosed fuse and switch - Google Patents

Enclosed fuse and switch Download PDF

Info

Publication number
US2465079A
US2465079A US71673746A US2465079A US 2465079 A US2465079 A US 2465079A US 71673746 A US71673746 A US 71673746A US 2465079 A US2465079 A US 2465079A
Authority
US
United States
Prior art keywords
cover
fuse
switch
closed
lugs
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
Inventor
George E Fitzgerald
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US71673746 priority Critical patent/US2465079A/en
Application granted granted Critical
Publication of US2465079A publication Critical patent/US2465079A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/10Adaptation for built-in fuses
    • H01H9/104Adaptation for built-in fuses with interlocking mechanism between switch and fuse
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00Closure fasteners
    • Y10T292/08Bolts
    • Y10T292/0911Hooked end
    • Y10T292/0921Multiple head
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00Closure fasteners
    • Y10T292/08Bolts
    • Y10T292/0911Hooked end
    • Y10T292/0926Spring projected
    • Y10T292/0928Operating means
    • Y10T292/0934Rigid

Definitions

  • the invention disclosed in this patent vapplication relates to combined fuse 'and switch units of the type covered in United States Apatent application Serial No. 680,892, led July 2, 1946, in which these elements are so compactly related that they mat7 be mounted as a unit on an -outlet box cover 'and be enclosed within -an ordinary outlet box.
  • a special feature of the units mentioned is that the device is .protected by a cover and that the opening and ⁇ closing of this cover serves to cut the fuseout of and into circuit.
  • the objects of the present invention 'are to improve the structure and operation of the fuse and switch constructions described, particular- 1y to eiect a locking-of the 'switch cover in the open and closed switch positions; to guard against accidental release or closure of the switch operating fuse cover; to attain a more positive movement and action of the fuse cover; t coniine gases vthat may be released on blowing of the fuse to the outlet box in which the device is mounted and to provide positive means land to aord definite indication of the switch throwing operations eiected by the movement of the cover.
  • Fig. l in the drawing is a front elevation of the combination fuse and switch unit as mounted on and combined with an ordinary outlet box;
  • Fig. 2 is a broken part sectional view on substantially the plane of line 2-2 of Fig. l, with the fuse cover closed and the switch in closed circuit condition;
  • Fig. 3 is a similar view showing the cover open and .the switch in open circuit conditi-on;
  • Fig. 4 is a side elevation of the com-plete device, in the closed condition indicated in Fig. 2;
  • Fig. 5 is a top .plan view of the complete unit in closed condition.
  • the construction shown is like that disclosed in the patent application referred to and copending herewith, embodying an insulating base 'i secured on the back of an outlet box cover 8 and carrying a fuse receptacle 9 accessible at the front of the box cover and a switch at the back for cutting the fuse receptacle into and out of circuit, this switch ⁇ made ,up of relatively stationary and movable contacts I0, II, the latter operably engaged by an insulating plunger I2 actuated by the pivoted fuse cover II 3.
  • the 'fuse cover and the box cover are made with companion -portions overlapping :to form an enclosure which will confine gases within the outlet box.
  • the box cover 8 carries an outstanding annular'flange 'I4 which in the closed .position surrounds the circular rim portion I5 of the hollow fuse cover.
  • the enclosing flange I4 is shown as extending back into complemental engagement at I6, Figs. l and 4, with the inner edges of the spaced hinge lugs I'I carrying Ithe
  • hinge lugs I1 are shown connected together across the back by an integral bridging ⁇ and spacing portion I9 kand these connected lugs forming the hinge bracket are shown as having portions 20 riveted through the back of the cover plate 8.
  • a doubled spring is shown provided to assist in throwing and holding the fuse cover in different positions, said spring having a base portion 2
  • the doubled over portion of the fuse cover spring is shown in Figs. 1 'and 5 as biiurcated to provide separate springs 24 for engagement with the angularly related cam portions 25, 26, of the hinge lug extension 27 of the fuse cover, at opposite sides of the switch actuating plunger I2.
  • special locking means consisting in the illustration of a latch lever 28 pivotally confined on the fuse cover at 29 and having laterally projecting lugs 30 at the outer end of the same to engage with the shoulders 3
  • the inner end of the latch lever 28 is shown as having a iinger depressible handle portion 34 and beneath this portion there is shown confined a V-bent spring 35 for rocking the lever in the latching direction.
  • the pivot for the latch lever is indicated as a T-shaped lug extended loosely through an opening in the transversely grooved portion 36 of the lever and riveted at 31 at the under side of the cover, as shown in Fig. 3.
  • the finger pressure portion of the latch cover is shown surrounded by a U- shaped guard wall or flange 38, which may be as high or higher than this releasing portion of the latch.
  • the releasing handle portion of the latch lever may be relatively narrow, as appears particularly in Fig. 1, so as to require purposeful finger operation to eiect release of the same.
  • the latch lever Disposed as it is, over the center portion of the cover, the latch lever is in convenient position for operation by one finger While the cover is gripped between other nngers of the same hand to shift the cover as a handle for throwing the switch one way or the other.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)

Description

March 22, 1949. Q E, FlTZGERAL 2,465,079
ENCLOSED FUSE AND SWITCH Filed bec. 17, 194e Patented Mar. 22, 1949 UNITED STATES PATENT OFFICE ENCLOSED FUSE AND SWITCH George E. Fitzgerald, Stratford, Conn.
Application December, 1946 Serial No. 716,737
1 Claim. l
The invention disclosed in this patent vapplication relates to combined fuse 'and switch units of the type covered in United States Apatent application Serial No. 680,892, led July 2, 1946, in which these elements are so compactly related that they mat7 be mounted as a unit on an -outlet box cover 'and be enclosed within -an ordinary outlet box.
A special feature of the units mentioned is that the device is .protected by a cover and that the opening and `closing of this cover serves to cut the fuseout of and into circuit.
The objects of the present invention 'are to improve the structure and operation of the fuse and switch constructions described, particular- 1y to eiect a locking-of the 'switch cover in the open and closed switch positions; to guard against accidental release or closure of the switch operating fuse cover; to attain a more positive movement and action of the fuse cover; t coniine gases vthat may be released on blowing of the fuse to the outlet box in which the device is mounted and to provide positive means land to aord definite indication of the switch throwing operations eiected by the movement of the cover.
Other desirable objects attained by the invention will appear in the course of the following specification.
The drawing accompanying and forming part of the specification -illustrates a present commercial embodiment of the invention. Structure, however, may be modied and changed as regards the immediate illustration, Aal1 Within the true intent `and broad scope of the invention as hereinafter deiincd and claimed.
Fig. l in the drawing is a front elevation of the combination fuse and switch unit as mounted on and combined with an ordinary outlet box;
Fig. 2 is a broken part sectional view on substantially the plane of line 2-2 of Fig. l, with the fuse cover closed and the switch in closed circuit condition;
Fig. 3 is a similar view showing the cover open and .the switch in open circuit conditi-on;
Fig. 4 is a side elevation of the com-plete device, in the closed condition indicated in Fig. 2;
Fig. 5 is a top .plan view of the complete unit in closed condition.
The construction shown is like that disclosed in the patent application referred to and copending herewith, embodying an insulating base 'i secured on the back of an outlet box cover 8 and carrying a fuse receptacle 9 accessible at the front of the box cover and a switch at the back for cutting the fuse receptacle into and out of circuit, this switch `made ,up of relatively stationary and movable contacts I0, II, the latter operably engaged by an insulating plunger I2 actuated by the pivoted fuse cover II 3.
In the present invention the 'fuse cover and the box cover are made with companion -portions overlapping :to form an enclosure which will confine gases within the outlet box.
vIn the illustration the box cover 8 carries an outstanding annular'flange 'I4 which in the closed .position surrounds the circular rim portion I5 of the hollow fuse cover.
The enclosing flange I4 is shown as extending back into complemental engagement at I6, Figs. l and 4, with the inner edges of the spaced hinge lugs I'I carrying Ithe |pivot pin 'IB `for `the fuse cover.
The hinge lugs I1 are shown connected together across the back by an integral bridging `and spacing portion I9 kand these connected lugs forming the hinge bracket are shown as having portions 20 riveted through the back of the cover plate 8.
A doubled spring is shown provided to assist in throwing and holding the fuse cover in different positions, said spring having a base portion 2| positioned and held against the face of the box cover by the connecting strap portion I9 of the hinge bracket and by lugs 22 at opposite edges extending out through notches 23 in the sides of the hinge bracket, Fig. 4. The doubled over portion of the fuse cover spring is shown in Figs. 1 'and 5 as biiurcated to provide separate springs 24 for engagement with the angularly related cam portions 25, 26, of the hinge lug extension 27 of the fuse cover, at opposite sides of the switch actuating plunger I2.
The separate spring arms 24, by their independent, rrn engagement with the hinge lug of the fuse cover at opposite sides of the switch plunger, tend to snap the fuse cover into the open `and closed positions and to hold it :firmly in such relations. This is particularly important in the closed position, confining the fuse cover tightly against the face of the box cover.
To prevent accidental or unintended operation oi the fuse cover and hence the switch, special locking means are provided, consisting in the illustration of a latch lever 28 pivotally confined on the fuse cover at 29 and having laterally projecting lugs 30 at the outer end of the same to engage with the shoulders 3| to lock the cover closed and to ride over arcuate portions 32 into notches 33 to lock the cover in open position.
The inner end of the latch lever 28 is shown as having a iinger depressible handle portion 34 and beneath this portion there is shown confined a V-bent spring 35 for rocking the lever in the latching direction.
The pivot for the latch lever is indicated as a T-shaped lug extended loosely through an opening in the transversely grooved portion 36 of the lever and riveted at 31 at the under side of the cover, as shown in Fig. 3.
The latch lugs 30, in riding over the arcuate portions and snapping into engagement with the locking shoulders 3|, 33, at opposite ends of the same, afford denite indication of the On and Off positions of the switch and show that the switch is locked in either the Oli or the On position and that the fuse, accordingly, is either out of or in circuit.
In the open circuit position the cover is locked up out of the way, leaving the fuse fully accessible for easy, safe removal.
To guard against accidental or unintentional release of the latch, the finger pressure portion of the latch cover is shown surrounded by a U- shaped guard wall or flange 38, which may be as high or higher than this releasing portion of the latch. Also, the releasing handle portion of the latch lever may be relatively narrow, as appears particularly in Fig. 1, so as to require purposeful finger operation to eiect release of the same. Disposed as it is, over the center portion of the cover, the latch lever is in convenient position for operation by one finger While the cover is gripped between other nngers of the same hand to shift the cover as a handle for throwing the switch one way or the other.
What is claimed is:
A safety lock for a fused switch of the type in which a fuse cover hinged on the front of a switch and fuse enclosure can be opened and closed to ei'ect opening and closing of the switch within the enclosure and in which the fuse cover is mounted for such hinging movement by having a hinge extension pivotally engaged between a pair of spaced hinge lugs, said safety lock being operative to automatically secure said cover and switch in either closed or open condition and comprising a latch lever pivoted intermediate its ends on top of said fuse cover in exposed position for release by an intermediate nger of a hand operating said fuse cover and having a finger depressible end portion extending over the central portion of the fuse cover and the opposite end projecting between the spaced hinge lugs, said lugs having notches in the edges thereof positioned to receive said projecting end of the latch lever in the closed and open positions of the fuse cover, a guard iiange upstanding on the front of the fuse cover extending from the hinge portion of the fuse cover about and surrounding the ringer depressible end portion of the latch lever and projecting to a height substantially as great as the extent of projection of said nger depressible portion for preventing accidental releasing operation of the latter and a spring disposed beneath the linger depressible end portion of the latch lever and located within the confines of said surrounding -guard flange.
GEORGE E. FITZGERALD.
REFERENCES CITED The following references are of record in the le of this patent:
UNITED STATES PATENTS Number Name Date 346,046 Howe July 20, 1886 531,353 Wilson Dec. 25, 1894 1,218,348 Yates Mar. 6, 1917 1,224,881 Kries May 1, 1917 1,305,998 Fromager et al June 10, 1919 1,364,674 Wurdack Jan. 4, 1921 1,530,116 Hawkins Mar. 17, 1925 1,651,824 Krentler Dec. 6, 1927 1,652,795 Platt Dec. 13, 1927 1,725,441 Caldwell Aug. 20, 1929 2,070,706 Benson Feb. 16, 1937 2,405,815 Cartun Aug. 13, 1946 FOREIGN PATENTS Number Country Date 33,950 France Oct. 16, 1928 351,393 Germany Apr. 7, 1922
US71673746 1946-12-17 1946-12-17 Enclosed fuse and switch Expired - Lifetime US2465079A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US71673746 US2465079A (en) 1946-12-17 1946-12-17 Enclosed fuse and switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71673746 US2465079A (en) 1946-12-17 1946-12-17 Enclosed fuse and switch

Publications (1)

Publication Number Publication Date
US2465079A true US2465079A (en) 1949-03-22

Family

ID=24879233

Family Applications (1)

Application Number Title Priority Date Filing Date
US71673746 Expired - Lifetime US2465079A (en) 1946-12-17 1946-12-17 Enclosed fuse and switch

Country Status (1)

Country Link
US (1) US2465079A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3009036A (en) * 1956-08-24 1961-11-14 Westinghouse Electric Corp Circuit interrupter
US3009035A (en) * 1956-08-17 1961-11-14 Westinghouse Electric Corp Circuit interrupters
US3246103A (en) * 1961-11-15 1966-04-12 Bell Electric Co Electrical fuse outlet cover
US5387761A (en) * 1993-05-06 1995-02-07 Simonis; Andrew Safety electrical receptacle assembly
US6700081B1 (en) * 2002-11-18 2004-03-02 Rockwell Automation Technologies, Inc. Fuse block with door sensing rotary disconnect
US20050040019A1 (en) * 2002-11-18 2005-02-24 Houck Theodore J. Fuse block with integral door sensing rotary disconnect
US7614889B1 (en) * 2008-09-26 2009-11-10 Premier Manufacturing Group, Inc. Utility receptacle apparatus for use with a work surface or similar article
USD766838S1 (en) * 2015-05-06 2016-09-20 Allen Leal Weatherproof GFI electrical plug cover

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US346046A (en) * 1886-07-20 Lock hinge
US531353A (en) * 1894-12-25 Gate-latch
US1218348A (en) * 1916-06-20 1917-03-06 John W Yates Sash-pivot.
US1224881A (en) * 1910-03-12 1917-05-01 Charles Morgan Marshall Electric switch and fuse box.
US1305998A (en) * 1919-06-10 fromager and j
US1364674A (en) * 1918-05-14 1921-01-04 Wurdack William Door-operated switch for panel-boards and the like
DE351393C (en) * 1919-04-06 1922-04-07 Schneider & Co Dr Ing Explosion-proof fitting with automatic switch-off of the light bulb when it is opened
US1530116A (en) * 1923-10-01 1925-03-17 Errol W Hawkins Baby carrier
US1651824A (en) * 1926-11-10 1927-12-06 Krentler Arnold Hinge Last Com Hinge
US1652795A (en) * 1927-12-13 X i inclosed switch
FR33950E (en) * 1927-08-01 1929-03-27 Johannes Beckmann Protective armature secures electric incandescent lamps from explosion hazards
US1725441A (en) * 1927-06-13 1929-08-20 Caldwell Marion John Safety switch and fuse box
US2070706A (en) * 1936-06-01 1937-02-16 Chicago Electric Mfg Co Duplex electric waffle iron
US2405815A (en) * 1945-01-22 1946-08-13 Gen Electric Lamp holder

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1305998A (en) * 1919-06-10 fromager and j
US531353A (en) * 1894-12-25 Gate-latch
US1652795A (en) * 1927-12-13 X i inclosed switch
US346046A (en) * 1886-07-20 Lock hinge
US1224881A (en) * 1910-03-12 1917-05-01 Charles Morgan Marshall Electric switch and fuse box.
US1218348A (en) * 1916-06-20 1917-03-06 John W Yates Sash-pivot.
US1364674A (en) * 1918-05-14 1921-01-04 Wurdack William Door-operated switch for panel-boards and the like
DE351393C (en) * 1919-04-06 1922-04-07 Schneider & Co Dr Ing Explosion-proof fitting with automatic switch-off of the light bulb when it is opened
US1530116A (en) * 1923-10-01 1925-03-17 Errol W Hawkins Baby carrier
US1651824A (en) * 1926-11-10 1927-12-06 Krentler Arnold Hinge Last Com Hinge
US1725441A (en) * 1927-06-13 1929-08-20 Caldwell Marion John Safety switch and fuse box
FR33950E (en) * 1927-08-01 1929-03-27 Johannes Beckmann Protective armature secures electric incandescent lamps from explosion hazards
US2070706A (en) * 1936-06-01 1937-02-16 Chicago Electric Mfg Co Duplex electric waffle iron
US2405815A (en) * 1945-01-22 1946-08-13 Gen Electric Lamp holder

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3009035A (en) * 1956-08-17 1961-11-14 Westinghouse Electric Corp Circuit interrupters
US3009036A (en) * 1956-08-24 1961-11-14 Westinghouse Electric Corp Circuit interrupter
US3246103A (en) * 1961-11-15 1966-04-12 Bell Electric Co Electrical fuse outlet cover
US5387761A (en) * 1993-05-06 1995-02-07 Simonis; Andrew Safety electrical receptacle assembly
US6700081B1 (en) * 2002-11-18 2004-03-02 Rockwell Automation Technologies, Inc. Fuse block with door sensing rotary disconnect
US20050040019A1 (en) * 2002-11-18 2005-02-24 Houck Theodore J. Fuse block with integral door sensing rotary disconnect
US7071427B2 (en) 2002-11-18 2006-07-04 Rockwell Automation Technologies, Inc. Fuse block with integral door sensing rotary disconnect
US7614889B1 (en) * 2008-09-26 2009-11-10 Premier Manufacturing Group, Inc. Utility receptacle apparatus for use with a work surface or similar article
USD766838S1 (en) * 2015-05-06 2016-09-20 Allen Leal Weatherproof GFI electrical plug cover

Similar Documents

Publication Publication Date Title
US2465079A (en) Enclosed fuse and switch
US3493707A (en) Electric switch operating means
US4870230A (en) Safety rocker
US4291207A (en) Removable push-to-unlock actuator for locking pivoted-subactuator self-enclosed electric switch
US2983799A (en) Switching apparatus with lock-off device
US2445635A (en) Lock switch
US2617847A (en) Combined switch contact and fuse clip
US2484424A (en) Lockable push-button device
USRE22559E (en) Front operated switch
GB653509A (en) Electric multi-pole switches
US3130881A (en) Tea kettle with closure lid, handle, and pouring spout
US2260073A (en) Enclosed circuit breaker
US1436340A (en) Hand-lamp switch
US2582572A (en) Electric fan
US2415297A (en) Push-button switch
US2153396A (en) Slow break switch
US2465078A (en) Enclosed fused switch
US2332633A (en) Enclosed switch
US2506148A (en) Safety switch
US1671623A (en) Electric switch
US1676608A (en) Battery switch
US1774722A (en) Switch for electrical flash lights
US1785868A (en) Flash-light switch
US2224848A (en) Electric switch
US2205092A (en) Clasp