US1280431A - Fuse-clip attachment. - Google Patents

Description

A, L. EUSTICE.

Fuse cLTP ATTACHMENT.

PLICATION LQSQAM., Patented 00T. 1, ma,

for the reason that .la i.

ALFRED L. EUSTICE, 0F CHICAGO, ILLINOIS,

- TUBING COMPANY, 0F NEW YORK, N.

.ASSIGNOR TO ECONOMY FUSE & MANUFAC- Y., vA CORPORATION 0F NEW YORK.

FUSE-CLIP ATTACHMENT.,

rescatar.

Specification of Letters Patent.

Patented Oct. 1, 1918..

Application filed September 9, 1914. u Serial 1\T o. 860,823.

To all whom t may concern:

i Be it known that I, ALFREDy L. EUsTIcE, a citizen 0f the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Fuse-Clip Attachments, of which the following is a specification.

ments, and is particularly adapted for use in connection with clips of readily electricallyconducting material, such as copper, which are designed to receive 'the terminals of cortridge fuses of the ferrule or knife-blade t e.

yln Aaccount of the fact that fuse clips are practically exclusively constructed of cop.

per, it is a frequent occurrence thatthese clips become bent so that on insertion of a cartridge fuse the contact between the terminals of the fuse and the fuse clips is unsatisfactory. Moreover, even under the best conditions by the present practice the contact depends on the resiliency of the metal of the clips, and no positive means are used to insure atight contact. This often results in the failure of contact between the complete contact surfaces of the terminals and the clips. i I

It has been proposed to reinforce the re-Y siliency of the members of a fuse clip by applying thereto an auxiliaryv spring clip t having liat bearing arms similar to the arms of the clip. But while this Amay suiice to increase thel pressure betweenthe clip arms and the blade of the fuse so long as the clip arms retain their normal shape, it is of little benefit when the clip arms become distorted, the auxiliary clip covers so' uch of the area of the clip arms as to interfere with the action of pressing the clip e arms back into shape upon the fuse blade;

moreover, the use of a spring forthis purpose is wholl inadequat It is the o ject of my invention to over- 4 come the above-mentioned diiculties by pro'- viding a clip attachment which is quickly and readily applicable -to the fuse clips and which bears upon the clip arms by what may);v be termedspot contact, and is 'shiftable to so that by localizdifferent positions thereon ing the point of pressure and developing the excessive pressure obtainable from meechani cal means, such as a wedging screw, the por` My invention relates to fuse clip attach-v 'distance along the arms 18, as

tions of the clip arms which tend to set open may be directly encountered and pressed upon the blade, and thereby insure a good cpntact between the fuse'terminals and these c ips.

The various advantages of my invention will be more readily understood by reference yto the accompanying drawings, which show a preferred embodiment of my invention, and in which: l

Figure 1 is a plan: of a section of a panel containing several cartridge fuses inserted in clips which are provided with the clip attachments constituting my invention;

Fig. 2 is an end elevation of one of the cartridge fuses, its clip,l and the clip attachment shown-in Fig. 1; and

Fig. 3 is a fragmentary side elevation of the parts shown in Fig. 2.

The` panel 10 has attached thereto, by means of the screws 11, or otherwise, a plu rality of fuse clips 12 which are adapted to receive the knife-blade terminals 13 of the cartridge fuses 14. Theclips 12 are usually constructed of copper or other readily electrically-conducting material, and are provided with arms 15 which at their outer edges are bent to form the lips 16.

The arms 15 of the clips 12 are very apt to become bent or otherwise fail to rovide a satisfactory contact with the terminals 13 of the safety fuses. To provide such a satisfactory contact I use the fuse clip attachment 17, whicheonsistsof a pair of spring arms 18 havingv reduced ends proportioned for spot contact with the arms of the clip as distinguished from contact therewith through an extended area, suitably bent at their inner ends clip arms 15 just inside of the Alips 16 or elsewhere upon the sides of the clip which the bifurcation of the attachment permits.

. The arms 18 are joined at the outer end of the clip attachment, and this outer end is threaded, the threads extending for some cated in Figs. 2 and3. Each of the clip attachments 17 is provided with a wing nut 19, which is inserted over the outer end of the clip attachment and has threaded engagement therewith. When the nut 19 is in position near the outer end of the -,elip attachment, the arms 18 are separated from each other suiiciently to engage the sides of thel clearly indiby reason of their spring character so that the inner ends of these arms may readily be slipped over the lips 16 of the fuse clip 12, or the clip attachment may be placed in position by slipping it over the end of the fuse clip. The Wing nut 19 is then rotated so that the arms 18 are moved toward each other and brought into tight engagement with the arms l of the fuse clip. This serves to eEect a good contact between the arms of the fuse clip and the terminal y13 of the cartridge fuse. In order to remove the clip attachment it is only necessary to loosen the wing nut 19 and either slip the clip attachment from the fuse clip by moving it along the latter until the clip attachment becomes disengaged `from the end of the fuse clip, or by al owing the 'arms 18 to become open suiliciently so that the clip attachment may be removed directly over'the lips 16.

I have' described my fuse attachment as used in connection with fuse/clips for cartridge fuses of the knife-blade type, but it will be'understood that it could be used With equal facility in connection with clips fori ferrule type fuses. ,-I It will be apparent to those skilled in the art that many changes could be made in the detailed construction ofthe clip. attachment which I havev described Without departing from the spirit or'scope of my invention.

What I claim is: 1. The Combination of a pair of fuse clip arms and a clamp spanning the clip -armsI and Vhaving contact parts engaging said arms andybeing of less area than the arms, said clamp being movable upon the clip arms to shi-ft the points of engagement between.

said contact parts and the clip arms and also provided With means to regulate the pressure of the contact parts 'with the clip arms. g

2'. The V'combination of a pair of fuse clip arms and a substantially U-shaped clamp spanning the clip arms, the extremities of the legs of theclamp being oflessf area than the clip arms and engaging said armsisaid clamp being movable upon the clip .arms to shift the engagement thereof with said cli arms, and means upon the clam to regu ate the pressure of the legs upon t e clip arms.

In Witness whereof I hereunto subscribe my name this 4th day of September, A. D.

HENRY M. I-IUXLEY, L. E. I-IANNEN.v

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