US772200A - Device for replacing fuses. - Google Patents

Description

No. 772,200. PATENTED 00T. 11, 1904. H. G. ADDIE. DEVICE'. FR REPLAGING FUSES.

APPLICATION FILED APR. 4. 1904. N0 MODEL..

4mm WNBA Wzin @Se 9,5/1 fn venan- UNITED STATES Patented October 11, 1904.

PATENT OEEICE.

HERBERT Gr. ADDIE, OF CRESCO, IOW'A.

SECIFICATION forming part of Letters Patent No. 772,200, dated October` 11, 1904.

Application iiled .'lpril 4, 1904. Serial No. 201,606. (No model.)

To @ZZ whom/ t party concern:

Be it known that I, HERBEETG. ADDIE, a citizen of the United States, residing at Cresco, in the county of Howard and State oil Iowa, have invented certain new and useful Improvements in Devices for Replacing Fuses, of which the 'following is a speciiication.

rIhis invention relates to improvements in means for replacing blown-out fuses; and the particular device described is especially adapted for use in connection with the electric equipment of street-railway cars, though it may be` utilized with slight modiiications in other relations where the fuses are liable to be burned out. Y

The invention comprises means for holding a fuse in operative position and other means, including a reservoir orl chamber containing a supply of fuses, whereby when the operative fuse is blown a new fuse may be easily and quickly inserted in operative position without the necessity of stopping the car and without appreciable interruption to the current in the circuit wherein the fuse is placed.

In the accompanying drawings, which form a part oi' this application, I have shown a preferred adaptation of my invention in the following views:

Figure l is a vertical section through the device complete. Fig. 2 is a iront elevation of same, and Fig. 8 is a rear elevation. Y

Referring to the details of the drawings, A represents a box of the shape shown, which contains the operative parts of the device. At the lower end oi the box is a hollow extension c', made of suitable insulating material, in the front and rear sides of which are provided, respectively, openings a2 a3. The upper end of the box is open and provided with a cover Cf. Dividing the box longitudinally into compartments c5 c is a vertical partition c7, which extends from the top to near the lower end. The front wall of the box is provided with a glass as and is curved at its lower portion a9, thus forming a curved discharge-opening at the bottom oi' the magazine-compartment a5, which merges with the straight opening at the bottom of the compartment au. The magazine-compartment c5 is adapted to hold a supply of fuses of suitable construction, but preferably cylindrical in form, as B, and arranged in single-column form, as shown.

Slidably arranged in the compartment c is a plunger C, of insulating material, to the upper end of which is pivotally connected the lower end oi' a link (ZQ the upper end of which is pivoted at Z2 on the handle or lever D. The lever is in the bent form shown and is pivoted at Z3 between the uprights (Zi, secured to the side walls of the box, and is operated by raising and loweringI the free end in the usual manner.

To the lower part oi' the rear wall of the box is secured ajlat spring e, the free and curved end c2 of which projects inwardly through a suitable opening d in said wall at the throat or entrance to the extension c, thus forming a yielding obstruction at said point.

Secured to the front and rear walls of the extension a' are spring plates or bands F F, made from flat metal and bent to form curved recesses f' f, and outward-Haring end portions fgfz, which project into the extension a' through the respective openings c2603. The recessesf' f when oppositely placed, as shown, form an open socket which is adapted to receive a fuse, and the latter is held in operative position by the partial embrace of the springs. Binding-posts f3 connect the circuit-wires y, respectively, to one pair oli' the spring-plates F, so that' the latter are at all times in circuit, and the circuit is closed when a fuse is in position between and embraced by said springs.

/Vhen my device is used in connection with an electrically-operated car, I place it where the handle will be readily accessible by the motorman, and its operation will be as follows: The compartment or magazine a" being supplied with extra fuses and one fuse being in operative position between the springplates F, any excess of current beyond the capacity of the fuse will blow or burn out the latter, thus opening the circuit, whereupon the motorman will depress the handle of the lever, and thus force downwardly thc plunger, the lower end of which bears upon the lowermost fuse, whereupon suoli fuse will be forced past the springe (which normally holds IOO the lowermost fuse in readiness for this operation) and into the socket formed by the recesses j in the spring-plates F and takes the place of the blown fuse, which will be forced out by the incoming' fuse. By the expansive action of the spring Z5 on the link CZ the plunger will be restored to its normal position and permit the next fuse to drop against the end c2 of the spring e.

While I have shown a cylindrical-shaped fuse, it will be apparent that spherical or other shapes may be used, the fuse per Se forming no part of this inve-ntion.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a fuse-replacer, a box comprising a fuse-holding magazine, and having an extension adapted to receive the fuses singly from said magazine, means for holding the fuses at the entrance of the extension, and means for holding' a fuse in operative position Within the extension, said last-mentioned means being arranged Within the electric circuit.

2. In a fuse-replacer, a box comprising a fuse-holding' magazine and having an extension adapted to receive the fuses singly from the magazine, yielding means for holding the fuses at the entrance of the extension, means for holding a fuse in operative position, and means for forcing a fuse from the magazine into operative position.

3. In a fuse-replacer, a box comprising a fuse-holding magazine and having an extension adapted to receive the fuses singly from the magazine, a spring for holding the fuses at the entrance ofthe extension, means in said extension for holding a fuse in operative position and manually-operated means for forcing' a fuse from the magazine into operative position.

4. In a device for replacing fuses, a box comprising a fuse-magazine and a plungerslidevvay, said box open at its lovver end, an extension registering With the lower end of the box, a spring extending partially across the entrance to said extension, a plunger arranged in said slideWay and means for operating same, and yielding plates arranged in said extension and adapted to hold a fuse in operative position.

In testimony whereof I afx my signature in presence of Witnesses.

HERBERT G. ADDIE.

Witnesses:

A. D. PERRY, JAS. GANNoN, D. H. MoINTosH.

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