US1144732A - Fuse device. - Google Patents

Description

E. 0. SCHWEITZER & A. HERZ.`

FUSE DEVICE.

APPLICATION HLED APR. 3. 1907.

Patented June 29, 1915.

2 SHEETS-SHEET l.

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E. 0. SCHWEITZER & A. HERZ.

FUSE DEVICE.

' APPLlcAnoN HLED APR.3.1901.

1 1 4:4, 732 Patented June 29, 1915.

2 SHEETS-SHEET 2.

UNITED STATES PATENT onnicn;l

Emvrtmn o. scnwnrrznn AND ALFRED HERZ, or CHICAGO, ILLINOIS.

FUSE DEVICE.

T aZZ wL0m it may concern Be 1t known that we, EDMUND O. Sc'nwnrrzER and ALFRED HERZ, lcitizens of the United States, residing at Chicago, in theoounty of Cook and'State of Illinois, have invented 'a certain "new and useful Improvement in F use vDevices, of which thejfollowing is a full, clear, concise, and eXact description, reference lbeing had to the accompanying 1o drawings, forming a part of this specifica-l tion.

Our invention 'relates' to fuse devices, and

its object is to increase-the eiiiciency vand genera-l Vutility of such devices;

More specifically stated,l the'object-of the invention is to Vprevent arcing upon the operation ofthe' fuse and thereby permit thefuse of fuses on Acurrents of high potential with 4perfect safety.

l The'further object 4ofthe invention is. to

lprovide simpleand practical structures for accomplishing this result.-

Other objects'of-the invention will be referred tov hereinafter.' v

set forth, we'arrange to 'project a block ,or other obstacle into the space occupied by the fuse immediatelygupon the operation of the same.- The obstacle 4is forced into the fuse space as soon asthefuse starts to soften.

1n this way such space is filled and the path of any are whichmight otherwise prevail, is effectively blocked and thearc thereby prevented, due to the fact that vaporiz'ation of' the fuse lis substantially' prevented. As

la convenient arrangementfor carrying thish out, we arrange a fuse' between two blocks -or members, one of whichis subjected to spring tension-tending to force it toward si? and against the other block or member. The

rious formsof devices, two of which' are.

illustrated herein.' ,In oneof the same the blocks or 4fuse-holding members are arranged Uin a casing with suitable contacts, the cas# speeication f Letters Patent.

Application mea Aprn a, 1907'.v serial 110,366,219.

In: carrying out the'invention as herein Patented June 29,1915.

ing being adapted for mounting in any preferred way. In the other form, the' blocks or members are mounted upon a plug member which is adapted for insertion into a socket member which latter is adapted to be mounted in any desired way, and provided with contacts with which connectin 'is to be made. The plu-g member 'carrying the fuse blocks or members, can be withdrawn from the socket member to permit repair or' replacement of a .fuse after being blown, and then reinserted into the socket member, the two membersbeing provided -with contact arrangements automatically connecting the fuse in circuit upon the insertion of the plug member.

Certain of the broad features of'theinvention herein' set forth are claimed in' an application filed by us' August 26,- 1909, Serial No. 514,719, which is a division of' this application.

Figures 1 and 2 are cross sections'taken on lines' aitright angles to oneanother, of a plug and socket fuse device embodying our inventiongfF ig. 3 is an elevation of the plug' member and Fig. 4 is an end view of the same; Fig. 5 'is a cross section showing the upper portion of the plug ,and Figu is a view of a detail of construction.

Referring to the tigu-res'of the drawings, the device therein shown comprises a socket member 15 and a plug member 16, whereof the member 15 is conveniently in the-form of a casing' provided with wings or lugs 17, 17 by which itca'n be mounted or'atta'ched in position. `The casing of said member 15 provides a chamber 18 having side extensions 19, 19 (Fig. 1i). A plug member 16 is adapted to fit into the chamber provided by "the casingl and is convenientlyV composed of Aa body portion 20 having side eX- tensions 21, 21 and provided' with a handle 22. Blocks 23,23 and 24 are mounted upon the body portion 20 of said plug member. The block 23 is secured to lugs 25 by screws 26 passing through said block and said lugs and provided with nuts 27. The block`24 is loose upon the block 23,but 'is normally' held in position by springs 28, 28 secured to the plug member by screws 29andI-e'utended up through grooves 30 (Fig.y 3) in the sides of the blocks -23 and24, theuppel" ends of said springsbeing providedwithl heads 31, 31 to engage the -upper surface of the block 24. The block 23- is providedwith a groove or channel (Figs. 2 and 4) and the block 24 with a downwardly' eX- tending projection 32 adapted to t in said groove or channel in the block 23. Thus the 'upper block 24 is held vagainst sidewise vmovement by the projection 32 and against endwise -movement by` the upper straight portions of the springs 28, 28 fitting in the grooves 30, A fuse 33 is arranged in the groove in the top-of the block 23 and extended down at the ends of said block and connected with.. contacts 34, 34 secured to the plug memberI 16. Said contacts 34, 34 are in the form of blades with pointed upper edges as shown in Fig. 6. The socket member 15 is provided with contact members 35, 35 conveniently in the form of separated blades adapted to receive the contact mem bers 34, 34 on the plug member 16. Contacts 36, 36 are connected to the contacts 35,

35 and understood to -be part of the circuit to be protected. i

The socket member 15 is provided with a I yoke 37 which is adapted to Vswing back 'and forth underneath and away from the handle 22 on the plug member andy thereby hold said member in position when desired, and to permit the removal of the same when desired. A flexible connectorsuch as a cord or wire 38 is connected to one of thewings 17 on the socket member 15 and also to. the handle 22 on the plug member 16. This is to prevent the plug member from dropping should it become disengaged from the socket member.

The socket member 15 is provided with inwardly extending ribs or projections 40, and

the plug member with outwardl extending projections 41 (Fig. 3) which t alongside ofthe ribsl 40 and thus form with the latter a partition dividing the .chamber of the socket` member into two compartments, thereby more efectually preventing the formation of an are..

In the operation ofthe device, the fuse 1s normally in position between the two blocks 23 and 24 as shown in the figures. But when anoverload current traverses it and causes said channel being wider than the fuse, and

means for crushing the yfuse and flattening it Out in said channel when the fuse begins to upon said fuse ing al plug and socket member being arranged with its closed end soften, said crushing means being of the same width as the fuse channel.

2. The combination of a fuse supporting member having a channel for the fuse, said channel being wider than the fuse, a fuse block having. work in said ch as the chann portion adapted to fit and nnel, and of the same width and spring means acting sive pressure on the fuse.

3. A device the class specified comprising a plug and socket member, the socket member being arranged with its closed end uppermost and the plug member being insertible into the socket member from below, a fuse carried by one of said members means movable upon sufficient v'softening of the fuse .to occupy the fuse space. and means for holding the plugl member in the socket member.

4. A device of the class member, the socket uppermost and the plug member being insertible into thesocket member from below, a fuse carried by onev of vsaid members,

, lock and exerting a compresspecified comprisspring contacts on they plug and socket meinbers adapted to engage one another "when the plug member is inserted into the socket member and movable means adapted to occupy the fuse space upon suicient softening of the said`fuse.

5. A device of the class specified, having upper and lower fuse'blocks for the fuse, l

one of which yhas a fuse channel and the other .la strip or portion adapted to fit into said channel, the fuse being in contact with the upper `and lower walls of said channel.

and a spring acting to oppose separationof saild upper and lower walls ofthe fuse channe H 6. A fuse device comprising a lug having` gluga projection, and a fuse'carried y said and extending over said projection and ent inpassing .over the saine, terminals at the base of said projection towhich said fuse is connected, a socket .member4 capable of receiving said plug, and having contacts caf` pable of receiving said terminals onthe plug,

and a movable member acting against said vfuse to form withsaid projection an impediment to the formation of an arc between said terminals. f

' 7. In a fuse device, the combination of a pair of fuse holding members between which the fuse is placed, one of said members having a roove andI the other a projection adapte .to fit into said groove, and the fuse bein placed into said groove,- one of said mem ers being movable toward and away from the other, and side springs engaging the movable member and having a portion of. their length arranged in side grooves in said blocks to prevent lateral movement thereof."

izo

8. A fuse device comprising plug and socket members, coperating contacts on said members, a fuse extending between the contacts on the plug member, a movable block resting upon a portion of the length of said fuse, and spring means holding said block against said fuse and adapted to force the same into the space occupied by the fuse when the latter operates.

9. A fuse device comprising plug and socket members, said members being provided With means forming a partition to divide the chamber of the socket member into two compartments each containing one of the fuse terminals, and a spring-actuated fuse block adapted for projection into the path of the arc upon the blowing of the fuse and thereby completing thepartition dividing the fuse chamber into two compartments.

10. A device of the class specified, comprising plug and socket members, one of which is provided with line terminals, and the other of Which carries a fuse and damping members arranged on opposite sides of the fuse and in Contact therewith, together with spring means for holding said members in position.

In witness whereof, we hereunto subscribe our names this th day of March A. D., 30

EDMUND O. SCHWEITZER. ALFRED HERZ. Witnesses:

A. M. BELFIELD, I. C. LEE.

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