US1234544A - Fuse-block. - Google Patents

Description

,234,544. 7 Patented July 24, 1917.

n, c. HOOKER.

FUSE BLOCK.

APPLIICATKON FILED JULY 1. 19m.

IN VENTOR.

Arron Nay.

UNITED STATES PATENT OFFICE.

DUNCAN C. HOOKER, OF FARMINGTON, CONNECTICUT, ASSIGNOR TO THE JOHNS-PRATT COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

FUSE-BLOCK.

Application filed July 1, 1916.

To all whom it may concern:

Be it known that I, DUNoAN C. HOOKER, a citizen of the United States, residing at Farmington, in the county of Hartford and State of Connecticut, have invented a new and useful Improvement in Fuse-Blocks, of which the following is a specification.

This invention relates to the conductors on a fuse block which are employed for elec trically connecting the wire terminals with the fuse terminals.

The object of the invention is to provide a fuse block with very simple and cheap conducting means which are easily manipulated and which will efficiently connect the wire terminals and the fuse terminals.

The invention is particularly adapted for fuse'blocks designed to receive fuses of relatively large capacity, for instance, fuses of 100 ampere and upward rated capacity, whichduses at the present time commonly have knife blade terminals.

Figure 1 of the accompanying drawings shows a side elevation of a fuse block having spring clips for receiving fuse terminals of the knife blade type and provided with socketed lugs for receiving the wire terminals', which clips and lugs are constructed and connected in accordance with the present invention. Fig. 2 shows a plan of the same. Fig. 3 shows a vertical transverse section taken on the plane indicated by the dotted line on Fig. and looking in the direction indicated by the arrows. Fig. at is a perspective view showing one end of the insulating base with one of the metal wire lugs placed thereon.

' The base 1 of the block is preferably a piece of porcelain, slate or similar insulat' ing material. Projecting upwardly from the base near each end are two screws, belts or threaded studs 2. These screws are desirably staggered and are fixed so "they will not turn. The bottoms 3 of the spring clips 4, which are designed to receive knife blade terminals of a fuse, have perforations so that they may be set down. upon the upper face of the base with the screws projecting upwardly into them. After the spring clips have been placed on the base over the screws nuts 5 are turned on the screws.

Before the nuts are turned down tightly the flattened ends 6 of the socketed wire terminal lugs 7 are slipped in between the Specification of Letters Patent.

Patented July 24, 1917.

Serial No. 107,018.

upper surface of the base and the under surface of the bottom of the spring clips, slots 8 being desirably cut diagonally in the flat ends of the wire lugs to permit this. After the wire lugs have been placed in position the nuts are turned down on the screws so as to tightly clamp the clips down on the lugs and secure the parts to ether.

\Vhen it is desired to asten wile terminals in the sockets of the lugs the nuts are loosened and the lugs withdrawn. After the wire terminals have been soldered into the lug sockets the flat portions of the lugs are slipped'onto the block beneath the clips and the nuts tightened. These devices may be packed in a small space for shipment by loosening the nuts and reversing the In so that they will occupy the positions filustrated by the dotted lines in Fig. 1. The lugs may be cast or they may, as shown, be formed of sections of tubing with portions flattened. There are a minimum number of conducting parts to this block and maximum contact is provided between the lugs. to which the wire terminals are secured andthe spring clips whichare'desi' ed to-receive the knife blade terminals 0 the fuse, thus insuring efliciency of action at a low cost.

The invention claimed is: y

1. A fuse block having a base, spring clips with screw openings mounted on the base, wire lugs with flattened ends provided with oblique slots in electrical contact with the spring clips, and screws passing throughthe openings in the clips and slots in the 111 s and into base for clamping the clips and tfie lugs together and to the base.

2. .A fuse block having an insulatin base,

spring clips with perforations-in then bottoms mounted on the base, socketed wire lugs with slotted flat portions located between the upper surface of the base and the bottoms of the spring clips, and serewspassing through the base, the slots in the flattoned portions of the lugs and the perforations in the bottoms of the clips for clamping the clips down upon the fiat portions of the wire lugs and holding the parts together. upon the base.

3. A fuse block having an insulating basef, spring clips with openings throu h the" bottoms and sides mounted upon t e b wire 1 s with slotted portions located be tween 1; 0 upper surface of the base ma the with oblique slots located on the neath the bottoms of the sprin bottomsof the spring clips, screws projecting upwardly from the base through the slots in the lugs and openings in the bottoms of the spring clips, and nuts turning upon the screws and exposed throu h the o enings in the sides of the spring cllps for c limping the clips down upon the wire lugs.

4. A-fuse block having a base, spring clips mounted on the base, screws pro]ecting upwardl from the base into the spring cIi s, wire ugs with flattened sections roVi ed ase beclips, and nuts turning on the screws for c amping the clips down upon the flattened portions of the wire lugs.

5. A fuse block having an insulating base, two screws projecting upwardly near each end of the base, sprin clips located on the upper surface of the ase over the screws, socketed wire lugs with flattened ends having oblique slots inserted between the baseand the spring clips, screws for clamping the clips down upon the flattened portions of the Wire lugs, or releasing the flattened portions of the Wire lugs from between the base and the clips.

DUNCAN C. HOOKER.

and nuts turning on the

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