US1025245A - Combined fuse contact-clip and terminal holder. - Google Patents

Description

`R. o. COLE.V COMBINED FUSE CONTACT GLP AND TERMINAL HOLDER.

APPLICATION 'FILED MAY4,1911. l

1,025,245. l l Patenteamay 7,1912.

' and State p Holders.

ROBERT C. COLE, OF WEST HARTFORDL CONNECTICUT, ASSIGNOR TO THE JOI-INS- PRATT CQMIANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

COMBINED FUSE CONTACT-CLIP AND TERMINAL HOLDER.

Specification of Letters Patent.

Patented May 7, 1912.

Application led May 4, 1911. Serial No. 624,986.

To all whom, it'mayconcern Be it known that I, ROBERT C. Conn, a citizen of the United States, residing at fest Hartforthin the county of Hart-ford of Connecticut, have invented the described Improvements in Comfollowing Contact-Clips and Terminal bined Fuse The obje-et of the invention is to provide an efficient and cheaply constructed fuse clip and line terminal strap from a single ieee of sheet metal, and in which the clamplng screw for the strap is arranged transversely to the plane of the fuse block, whereby uninterrupted metallic and electrical continuity will be obtained from the line to the fuse, and whereby the clamping and unclamping ofthe line terminal can be aecomplished with the least inconvenience.

To this end the invention consists in the shape of the blank from which the device is struck up, and the form and relative arrangement given to the several parte of the device.

The invention also includes the details of the v construction hereinafter pointed out; and particularly the arrangement of a lip or fiange on the line clamping strap for preventing disalinement of the screw holes, which latter fea-ture, as will be later observed, is capable of employment in other forms'of fuse clips than the one herein set forth.

The above and other features of the invention will more fully appear by reference to the accompanying drawings in which--- Figure 1 is a view in side elevation of a combined fuse clip and line terminal strap embodying the present invention, a line conductor terminal being indicated in position in the strap. Fig. 2 is a view of the strap and line terminal taken on the line 2 2 of Fig. 1.y Fig. 3 is a view of the fuse clip taken on the line 3-3 of Fig.'1. Fig 4 shows the blank from which the combined.

fuse clip and terminal strap is struck.

Referring to Fig. 4 the blank is formed of sheet metal with two rectangular portions 1 and 2 connected by a neck 3 located centrally of the part 1 and somewhat to one side of the middle of part 2, so that the latter is of greater extent on one side of the axis of the neck than on the other. Part 1 of the blank is the part from which the clip whichholds the fuse is struck. A. central sect-ion 4 forms the base of the clip and is perforated with holes marked 2O for attachment to a fuse base block of insulating material. Its end sections 6 are bent upwardly to form the parallel and upright clip contacts, and its sections 5 intermediate of the portions forming the base and clip contact sections are curved upwardly and also inwardly as shown in Fig. 8 whereby the contact sections 6 are maintained in parallel proximity to each other and with a sufficient degree of resilience to accommodate a fuse terminal thrust between them. The extremities of the clip sections 6 are turned outwardly to form diverging lips 7 to guide the terminal contact of the fuse into place, anda tongue S is stamped out of one of the clip sections and turned in between the clips to form a stop for the blade of the fuse, it being understood that the particular form of clip takenfor illust-ration herein is adapted for use with cartridge fuses having projecting contact terminals of the familiar knifeblade type.

The middle section of part 2 of the blank, together with a considerable portion of its longer w-ing 9, is rolled over to form a contractible clamp or strap member 10 of substantially cylindrical shape as indicated in Fig. 2, and adapted to receive the terminal thimble of the line wire of the circuit in which the fuse is to be placed. The oppo site shorter wing of the part 2, as well as the longer wing, terminate in substantially flat surfaces which project laterally from the een thimble receiving portion at some distance, y. one from the other, and are substantially parallel to one another and to the'plane of the clip base 4 above referred to. Finally the end of one of the wings of the part 2, preferably the end of the wing 9, is turned inwardly toward the other in the form of a flange or lip marked 12 in the drawings, which lip is substantially vertical to and is adapted to bear against the opposing end of wing 11. The two strap sections 9 and 11, as thus arranged, are provided with alined screw- holes 14 and 15, the screwhole 14 in the lower section being threaded so that by means of a screw 1G the twoends ofthe strap may be drawn together and thereby tightened on the thimble 17 of the line terminal 18. The flanged lip l2 by its bearing upon the under strap terminal, preu vents relativel lateral slip of the two portions of the strap and tends to maint-ain the axis of the two screw-holes in substantial alinement during the operation of tightening the screw and drawing the strap ends together.

The device as thus constructed is adapted for mounting upon a usual base-blocl 13 by means of screws such as shown in Fig. l which are screwed into the holes 20 in the base section 4 of the clip. It will be observed that the arrangement of the perforated portions 9 and 11 of the clamping strap in substantial parallelism with the base-block 13 enables the clamp screw 1G to have a perpendicular position with respect to the latter whereby it can be readily operated. This arrangement is of particular advantage With fuse-b1ocks which are placed in the bottom of ak boX or casing such as indicated at 2l in Fig. l.

' Claims. n

. l. A combined sheet metal fuse clip and line terminal strap formed from a blank having two parts with a neck connecting said parts, one of said parts being shaped into two opposing spring' clips and the other' heilig shaped to form the strap for the line terminal, the strap-forming part having wings of unequal length from the axis of the device, whereby the longer wing may embrace the line terminal and thence be opposed to the shorter wing so that the two wings may be .clampedl together by a. screw disposed perpendicularly to the base block on which the device is mounted.

2. A sheet metal line terminal strap for fuses, said strap having aportion intermediate the ends thereof shaped to embrace the line terminal and having the ends thereof opposed, and substantially parallel, with alined screw holes therein, a flange or lip carried by one of the end portions perpendicular to the other end portion to prevent disalinement of the holes when the strap is tightened, and a screw passed through the alined screw holes for tightening the strap on the line terminal.

In testimony whereof, I have signed this specication in the presence of two witnesses.

ROBERT C. COLE.

Witnessesz Hazan G. BRMNARD, DUNCAN W'. HOOKER.

Copies of this patent may be obtained for ve cents each, by addressing' the Commissioner of Patents, Washington, D. C.

Images