US1039257A

US1039257A - Fused disconnecting-switch.

Info

Publication number: US1039257A
Application number: US69265212A
Authority: US
Inventors: Robert Chas Cole
Original assignee: JOHNS PRAT Co
Current assignee: JOHNS-PRAT Co; JOHNS PRAT Co
Priority date: 1912-04-23
Filing date: 1912-04-23
Publication date: 1912-09-24
Anticipated expiration: 1929-09-24

Description

R. C. COLE.

PUSED DISCONNECTING SWITCH.

APPLICATION FILED APR.23,1912.

Patented Sept. 24, 1912.

UNITED STATES PATENT OFFICE.

ROBERT CHAS. COLE, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE JOHNS-PRAT COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION 0F CONNECTICUT.

FUSED DISCONNECTING-SWITCH.

Specification of Letters Patent.

Patented Sept. 24, 1912.

Application led April 23, 1912. Serial No. 692,652.

T0 all whom may concern y Be it known that I, RonR'r CHARLES COLE, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented a new and useful Improvement in Fused Disconnect-ing-Switches, of which the following is a specification.

This invention relates to a switch that is particularly adapted to be used in a high tension circuit between the main lines and a transformer, although, of course, it may be used in other situations.

The object of the invention is to provide a switch for this purpose which is simple and cheap to manufacture, convenient and safe to operate, and which is readily fused in such manner as to protect the circuit, the fuse being thoroughly shielded from the weather.

Figure 1 of the accou'ipanying drawings is a view looking at the front of the device, with a portion of the fuse and its housing broken away. Fig. Q shows a side elevation with the fuse housing and a portion of one of the insulators cutin central section in order to show the construction.

The base 1 is desirably made in the form of a yoke of galvanized malleable iron with perforations 2 for the fastening bolts or lag screws used to secure the base in place. The out-turned ends of the base are in the shape of ribbed pins 3, and cen'iented or otherwise firmly fastened on these are insulators 4. These insulators are preferably made of porcelain, in such form as to afford high electrical protection and have sniticient strength, although of course the insulators could be made of other suitable insulating i material or compound.

Cemented or otherwise securely fastened in recesses in the front of the insulators are ribbed pins 5. Attached to these pins are contact lugs 6, which are designed to be connected with the line and transformer wires. The outer ends of these pins are shaped to form contact plates 7.

Pivoted tothe Contact plates at the outer end of the lower insulator pin, by the bolt upon which turns the wing nut 9, is the rmiual blade 10 that integral 'with the rap 11 which supports and closes 'the lower l of the fuse housing 1i?. This housing v be made ay iiber. or porcelain, or f insulating tatie, and .its lower end is securely held in the cap at the bottoni by the screws 13. Vent holes 14 may be made through the bottom of this lower cap if desired. Encircling the upper end of the housing is a-metallic band 15, which is se curely fastened to the housing by screws 16, and which is provided with an eye 17. Pivoted to one side of this band is a metallic cover 18, projecting upwardly from which 1s the integral terminal blade 19 that is designed to pass into and out of the contact plates at t-he outer end of the upper insulator pin. The cover is normally retained closed by means of the catch spring 20, which is shown as fastened to the band at the upper end of the housing.

The cartridge lfuse 21 is placed in the housing with its lower terminal Q2 resting on the boss 23 on the inside of the cap at the bottom of the housing, and when the cover is closed, the upper terminal 24 of the fuse is engaged and held in place by the arms of the spring which is fastened to the boss Q6 on the inside of the cover.

The housing, which is pivoted at its lower end to the contact plates projecting from the bottom insulator pin, by the removable bolt that is held in place by the wing nut, can be yreadily swung out and down for opening the circuit, by engaging a hook, at the end of an insulating handle, with the eye at the upper end of the housing, and it can be swung back by the same means so that the upper blade will engage the contact plates that project from the top insulator pin for closing the circuit. fh-cn it is desired to refuse the device, after the housing has been swung down for opening the circuit and the latch spring is released the cover swings open and the fuse in the housing drops out. After a new fuse is placed in the housing, the cover is closed and thc housing swung back to close the circuit. This structure is efficiently insulated and can be safely manipulated. even when used in a high tension circuit. Fuse protection is provided, the fuse is accessible, and it is a simple and safe operation to remove a blown fuse and sub stitute a fresh one. The fuse is handled when the circuit is opened, and it is thoroughly protected from the weather when the circuit is closed.

The invention claimed is:

l. A fused switch having a base, insulators umunted on the base, ccaitacts carried by the insulators, and a housing of insulating material that is closed at both ends, one closed end being pivoted to the contact carriedby one insulatorand the other end being closed by a removable cap that is adapted to be swung into and out of engagement With the contact on the other insulator.

2. A fused switch having a yoke-shaped base with insulators mounted on the ends of the yoke, pins with contacts projecting from vthe insulators, a housing with one end pivoted t0 one contact and the other end adapted to swing into and out of enga-gement with the othercontacl", a cover adapted to open ,and close one end of the housing, and a fuse removably retained in the housing by the cover.

3. A fused switch having a base, insulators mount-ed lon the base, contacts carried by the insulators, a Cap pivoted to one cont-act, a tubular vhousing fastened to they cap, a cover hinged to the other end of the housing andA having a part adapted to engage the other contact, and a fuse removably located in the housing and having one terminal in electrical engagement with the cap and the other terminal in electrical engagement with the cover.

contact, a'housing secured to the cap, a cover hinged to the other end ofthe housing and adapted to be engaged with and disengaged from the other Contact, a spring projecting into the housing from the cover, and a fuse with one terminal engaging the cap and the other terminal engaging and held by the spring on thecover.

5. A 'fused svvitch having a yoke-shaped base with insulators mount-ed on the ends of the base, pins projecting from the insulators, said pins having Contact plates at their outer ends, a cap removably hinged to one contact, anin'sulatmg tubular housing secured to the cap, a band encircling the other end 'of thehousing, a cover hinged-to the hand, a blade projecting from the cover and adapted to be engaged with and disengaged from the contact carried by the other insulator, a fuse removably located in the housing and having one terminal electrically connected with the cap and the other terminal electrically connected with the cover, means connected with the band Jfor holding the cover closed, and means for swinging the .free end of the housing from its Contact plates.

. ROBERT CHAS. COLE. Witnesses:

HAZEL Gr. BRAINARD, A. J. NEWTON.