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Publication numberUS891323 A
Publication typeGrant
Publication dateJun 23, 1908
Filing dateJun 13, 1907
Priority dateJun 13, 1907
Publication numberUS 891323 A, US 891323A, US-A-891323, US891323 A, US891323A
InventorsBert A Brown
Original AssigneeBert A Brown
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 891323 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

No. 891,823. PATENTED JUNE 23, 1908.




' To all whom it may concern:



Specification of Letters Patent.

Patented June 23, 190s.

Application ledxJ'une 13, 1907. Serial No. 378,758.

Be it known that I, BERT` A. BROWN, citi.- zen vof the United States, residing at Churchville, in thecounty of Monroe and State of New York, have invented certain new and useful Improvements in Fuses, of which the following 1s a specification.

This invention rovides a fuse of'novel form which willin icate the line interrupted by the burning vout of the fuse'so that repairs 'may be uickly made and the line restored to norma or working condition without entailing the-loss of time incident to looking up the line and obviatingthe-expense attendant upon such investigation to locate and replace t e burned ont'fuse'..y f

The present invention, besides indicating -the line offuse burned out by the passage of an abnormal charge over the line, also `admitsof repairs being quickly and economically effected, it only ,being necessary to` replace the burned out fuse wire which may be Ieected at a nominal cost and in a moments time. i Y y i. lFor a full understanding of the invention and the meritsthereof and also to acquire a knowledge of the details of construction and the means for efectin vthe result, reference is to be had to the fol owing description and accompanying drawings.

While the invention may be `adapted to different forms and conditions by changes in the structure and minor details without del partin from the spirit orjessential features thereo still the preferred embodiment is shown in the accompanying drawings, 'in


.l Figure ing the invention. Fig. 2 is a vertical longishowing the relation of the parts under nor- 1 is'a front view of a fuse embodytudinal section on the linefof Fig. 1,

Corresponding and like parts are referred to in the followin descriptlonand indicated inall the views' o the drawings by the same reference characters.

The fuse in its general'appearance is` not unlike the ordinary. fuse and comprises a f body 1 of dielectric material', preferably wood, and 'having metal ends 2 and 3. A longitudinal ,slot onrecess 4 is formed in a side of the body 1 andextends from one end dering upon the s -contacts 7 of the fuse` are in electrical con- 105 The local circuit is held open` to within a short distance of the other end and receives contact s prings 5 'and 6 which normally stand' apart at their inner ends and have their outer ends attached to the is pivoted near one end' to the body 1, being mounted upon a pin 9 which extends transversely through registering openings formed in the arm 8 and ortions of the body 1 borlbt or recess 4. The movable arm 8 is hollow upon its inner side and is preferably formed of metal and c'onsists of a strip of sheet metal bent upon itself. The'hollow side of the movable arm is utilized to `receive the signal 10, which consists of a fan, one end being attached to the body 1 and the other to the arm 8 so'that when the free end of the arm 8 is thrown outward, the signal or fan 10 vis eX osed, thereby attracting attention or enabling one of a series of fuses to be readily ascertained when burned out. A coil spring 1 llof'the retractile type has one end attached to the movable arm 8 and its other end to the body 1, said spring being arranged to throw the free end of the arm 8 outward when said arm is released from lthe restraining i'niuenceof the fuse wire by the latter burning out. .The coil spring 11 extends lengthwisev of the body' land ,1sy arranged within t e slot or recess 4' so as tol be out of the way and protected. The buttl of the movable arm 8 is arranged to engage with the free end of the contact spring 6 and press the same inward so as to cause two contact springs 5 and 6 to makeelectrical connection when the fuse wire is burned out and the arm 8 is thrown outward at its free end .by the action or the spring 11. rPhe butt of the movable y with a .p 12 of hard rubber or other dielectric materiahthereby preventing the'metal. of the arm 8 coming in contact with the metallic spring 6. 1 In accordance with this invention the fuse is located in a local circuit embodyingamalarm 13, switch 14 and contacts 15. The

nection with thecontacts 15 when the fuse is in position. by the separation .of the contact sprlngs 5 land 6, butD when the fuse,wire burns out by" the passage of an abnormal charge, themov-A able arm Sliies outward at its free end and its butt portion pressing upon` a contact` spring 6i closes/the local circuit by-causxng body 1 bymeans of fastenings 7 which also ,constitute contact points'. A: movable arm 8 is provlded.

said contact springs `45 and 6 to make electrical connection, thereby sounding the alarm 13 and attracting attention and giving warning that someone of a series of circuits has been disturbed and the articular cir cuit interrupted may be readi y ascertained by the signal 10. T he local circuit may be r(plened or closed by means ofthe switch 14.

e movable arm 8 is held in normal posi-v tion or within the slot orrecess 4 by means of a fuse wire 16, one end being attached to the metal end 3 and the opposite end to the movable arm 8, clam screws 17 being 'provided for attaching tlie fuse wire to thev respective parts. Then the fuse wire 16 burns out it is not necessary to throw the fuse away or to replace the same by a new one, which entails considerable expense, but a short length of fuse wire is placed in position, beingl secured to .the end 3 and to the movable arm S in the manner stated.

Having thus described the invention, what is claimed as new is: Y

1. In a fuse, the combination of a body, an

arm pivoted to said body, means for throw` ing said arm outward, a fuse wire for normally holding the pivoted arm in restraint, and a signal connected at one end -to the pivoted arm and at its opposite end to the said body and adapted to be displayed when the pivoted arm is thrown outward after *being 'released from the restraining influence of the aforesaid fuse wire.

2. In a fuse, the combination of a body, an

arm pivoted near one end to the body and made hollow upon its inner side, means for throwing said arm outward at its free end, a fuse wire for normally holding the pivoted arm in restraint, and a signal normally arranged within the space of the pivoted arm and concealed and protected thereby and adaptedto be displayed when saidarm is released fr'om the restraining influence of the fuse wire and thrown outward.

3. In combination, a circuit including an alarm, a switch and contacts, a second set of contacts in electrical connection with the contacts of the aforesaid circuit, a pivoted arm adapted under abnormal conditions to bring the said second set of contacts in electrical connection to close the aforesaid circuit, a visible signal actuated by said 4arm to be dis layed when the arm is thrown outward, and) a fuse wire for no'rmally holding the said arm in restraint.

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


IVitnesses JOHN J. KING,

J. G. Cooic.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3634804 *Jan 13, 1970Jan 11, 1972Mineo Charles JPlug with fuse
US4023133 *Mar 15, 1976May 10, 1977The Chase-Shawmut CompanyBlown fuse indicator
US5055818 *Nov 30, 1989Oct 8, 1991Cooper Industries, Inc.Flagged blown fuse indicator
Cooperative ClassificationH01H85/303