US1173598A - Fuse device. - Google Patents

Description

v L. 0. MEVLLOR.

FUSE DEVICE. APPLICATION FH .ED MAR- 3. I913.

Patented Feb. 291916.

I ive/1Z5?" W njqea LESTER O. MELLOR, F EVANS'ION, ILLINOIS.

FUSE DEVICE.

incense.

Specification of Letters Patent.

Patented. Feb. 29, 1916.

Application filed March 3, 1913'. Serial no. 751,686.

To all whom itmay concern:

' Be it known that I, Lns'rnn O. MELLOR, a

citizen of the United States, residing at Evanston, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Fuse Devices, of which the following is a full, clear, concise and exact description, reference being had to the accompanying drawings, forming a part oi this specification.

My invention relates to fuse devices, and especially to fuse devices in which the fuses are inclosed.

Prominent objects of the invention are to provide a simple, practical and inexpensive form of fuse device; to arrange for the extinguishment of the are formed when the fuse blows; to prevent iiijiiry'to the device.

and surrounding objects by the operation of the fuse; and to accomplish the foregoing and other desirable results in a simple and expeditious manner.

In the accompanying drawings Figure l is a vertical section of a fuse device embodying my present invention; Figs. 2 and 3 are horizontal sections of the same, taken on the lines 2--2 and 3-3 in Fig. 1; Figs. 4' and 5 are views of details ofconstructi onu Referring to the drawings, 1 provide an exterior case, 1 which is made of any desirable material, preferably porcelain or other insulating material. This case is in the form of an ihverted socket with vertical cylindric walls and is shown in Figs. 2 and 3 open at its lower end. Said lower end is enlarged as shown in Figs. 1 and 2,. and will be referred to more particularly hereafter. l/Vithin the socket 1 is a plug 2 also cylindrical in form and adapted to fit within the cylii'idric bore 3 oi the socket 1 so as to permit ready insertion and removal of the plug 2 into said socket 1. The plug2 is provided at its lower end with a handle 4 by which i said plug may be grasped by the hand, and

said handle is extended from a cross portion 5 of relatively large size so that it closes the lower end of the enlarged bore 6 of the socket 1. The plug 2 is provided with metal.

clips 7--7 which. have lateral projections 8--8 and the socket 1 is provided with spring socket members or jaws, 99 adapted to receive the lateral projections 88, said members 99 being preferably in the form of sheet metal pieces l0-10, bent to form the laterally projecting"horizontal spring socket jaws 9-9, as shown in Fig. 4. The clips 7-7 are secured to the plug 2 by screws 1l--11, and the spring socket members 99 are secured to the socket 1 by screws 12-42, said spring socket members being arranged in the enlarged bore 6. of the socket member: 1. Thusthe be held in position in the socket land contact also made between the two members by the engagement of the clip projections plug 2 may 8-8 with the socket members or jaws 9 9.

This engagement and disengagement canbe brought about by giving the plug 2 a small I turn or twist by means of the handle 4 so as to slip the-projections 8+8 into or out of the sockets 9 9, The plug 2 carries a fuse 14 which is arranged. in irregular form. as best shown in Fig. 1 Said fuse is secured at its ends to the clips 77, as shown in Fig. 1 and 5, and extends thence upwardly and across the top of the plug 2 and thence downwardly withinthe bore 15 thereof; and across the same as shown in Fig. 1. The lower cross portion of the fuse in said bore 15 is reduced or narrowed as shown. at 16, Fig. 3.. The bore or chamber 15 is desirably provided with oil or otherarc extinguishing liquid 17, which of "course has the -efleot of submerging orpartly submerging the fuse 14. A loose block is fittedupon the top of the, plug 2, saidblock 18 conveniently having a down.- ward projection 19 which fits into bore 15 and extends part way down the same with space between said portion 19 and the walls 'of'the bore 15 sufficient to allow the fuse 14. tghave its proper position; A. spring 20 is interposed between the block 18 and, the

top of the socket 1, said spring 20 serving a normally to ho'd the block 18 down and Thus it will be seen that when the device I tions and also between the do endin ortions so that a very irregular path tending to obstruct the arc is provided. It will be further seenthat the narrowed or reduced portion of the fuse which of course is that portion which will first blow, is well Within the device, being farthest fromthe terminals and best projected by the barriers and also is immersed in oil or other suitable liquid. It will also be seen that this reduced or most susceptible part of the fuse is practically inclosed, the'block 18 forming a; substantial closure" for the bore 15 of the plug 2 whereby the arc is well confined and also that sulficient yield to accommodate any explosion of the fuse is provided by the movability of one of the walls, as for example the block 1 18 of the confining chamber thereby pre-- venting damage from the explosion of the fuse. It will also be seen that this movable or yieldable portion of the confining Wall is automatically restoredto place and held with a' proper amount of'tension against movement so that the fuse and liquid therefor are not unduly dissipated, but are sufiiciently confined to prevent scattering and other undesirable effects. It will further be seen that when the fuse has operated it can be replaced by-simply detaching and removing the plug '2 and putting a new fuse and" new liquid if necessary in the same.

It will be understood that changes and modifications can be made :without depart in from the spirit of the invention.

Vhat I claim is: n

1'. A fuse device comprising plug and socket members, the socket .member being. open at its lower endand the plug being insertible into thejsocket member from below, said plug being provided with'a cen-' trally arranged chamber and carrying-a fuse which is connected to the outer Walls ofthe plug and extends thence upwardly and then inwardly and downwardly in said chamber, arc extinguishing liquid in said chamber submerging a portion of said fuse, a closure 18 mounted upon' the upper endof the plug and closing the chamberv thereof, and spring means interposed 'between said closure and the top of'the socket memben.

'2. A fuse device comprising plug. and socket member's, whereof the socket member is-provided with an opening whosev mouth is atits lower end and the plug member being arranged to be inserted upwardly into said opening, said plug memher being provided with .a chamber-open at its top, a fuse having its terminals secured to the sides of said plug member and extended downwardly into said chamber, and

. arc extinguishing liquid in said chamber submerging the lower portion of said fuse therein. 4

3. fuse device comprising plug and socket members, whereof thesocket inember' is provided with an opening whose mouth is at its lower end and the-plug member being arranged to be inserted upwardly into said opening, said pluganembe'r being provided wit-ha chamber open at, its' top,

the lower portion "of said fuse therein, and 7 a closure for the upper end of said chamher in said plug.

a. A fuse device comprising plug and socket members, whereof the socket member 7 is provided with an opening whose mouth is at its lower end and the plugmember being arranged to be inserted upwardly into said opening, said plug member being providedwith a chamber open at, its top, a fuse having its terminals secured to the sides of sa1d plug member andextended downwardlyintosaid chamber, arc extinguishing liquid in said chamber submerging the, lower portion of said fuse therein, and a closure for the upper end of said chamber in said plug, said closure having a projection extending down into said chamber and interposed between downwardly extending portions of said use. above said liquid. l

5.. A fuse device having anin ternally arranged chamber containing arc extinguishing liquid, afuse led into the top of saidthe opposite sides thereof and across the same below the top thereof, and-a removable closure for said chamber resting upon the. top of the walls of said chamber, and having a projection extending downwardly into said chamber.

6. A fuse device having an internally arranged chamber containing arc extinguish- 'ing liquid, a fuse led into; the top of said chamber and extended downwardly 'along the opposite sides'ther'eof, andgacross the same below the top thereof, removable closure for said chamber resting upon the top of the walls of said chamber, and 7 wardly extending portion of the fuse, and

chamber and extended downwardly along 10g into said chamber and between the down- 1-25 sprmg means acting upon the t'op 'of said closilr'e and. tending to held. the same down being formed by a dbwnwerrlly extending projection on seicx closure, and a, spring aetmg upon sald closure to hold the same normally 1n posltlo'n in close smd chamber;

In Witness whereof, I hereunto subscribe 15 my name this 26th day of February, A. 1). L913.

LESTER O. MELLOR.

Witnesses: A. L.- JONES,

H. A. JONES.

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