US1313288A - Electric fuse-plug - Google Patents

Description

J. GLATZ. ELEcTmcwsE PLUG.

VAPPLICATION men ma. 8.

Patented Aug. 19, 1919.

UnrrED STATES PATENT oFFicE;

JOSEPH GLAI'Z, F IPHILAIDEL-PHIA, PENNSYLVANIL ELECTRIC FUSE-PLUG.

Specification of Letters Ifatent.

Patented Aug. in, 1919 Application filed February 8, 1919. Serial No. 275,713.

To w om it may concern:

2 n one it men n that I, Josnrn ,(ILATZ, a citi- Year eliective in operation, and is not likely to get; out of order. p

In carrying out my invention, I employ body portion having therein a cavity or recess of a novel C011l'L11,Wl1l0l1 extends into said body preferably at an angle tothe median or axial line thereof, and I locate in said cavity, a conducting clip and alsoa. noncondnctor of novel contour, between th lower portion of which is located a fuse wire, whose construction will hereinafter he more fully set forth.

One of the objects of my invcntion'is to provide a socket having'novel means for permitting the insertion and removal of the fuse metal, and "for enabling the latter to make the necessary contact with the thread on the plug.

A further object of my invention is to provide in conjunction with an improved, renewable iuse, side channels in the plug at for-ding means for permitting the ready and instantaneous escape of the gases generated by the blowing out of the fuse metal.

A further object of my invention is to collocnte in a novel manner, a fuse of any conventional type with a threaded outer conducting shell permanently secured on the body of the plug and having a-lip contacting with the fuse metal, in conjunction with a. novel removable, taper, wedge-shaped non-conduetor, which latter, together with the fuse metal, is properly held inassembled position by a novel removable clipfof conducting material. h v

Vs ith these andothcr objects in view, the invention comprises certain novel sir-notions, .combinations and arrangement of parts as will hereinafter more fully be described and claimed,

the non-conducting wedge and conducting con- For the purpose of illustrating my amention, I have. shown in the aecompaiiying drawings one form thereof, w ich is ati'present preferred by me, since th, .a'ine will he found in practice to give satisfngtory"and reliable results, although it is tobe understood that the various instrumentaliti of which my invention consists can be "rm-i ously arranged and organized and that-my invention is not limited to th'e prec'" rangement and organization of the-Fe ii trumentalities, as herein shown and ties I Figure 1 represents a side elevation, partly in section of an electric fuse plug'embodying my invention, the sect-i'oirlieiniq taken on line 1-1, Fig. 2. I i

F 2 represents a plan view of Fig. 1-.

Fig. 3 represents a perspective view of clip employed in detachedpositiom Similar numerals of referenceindi corresponding parts in the drawings 1d ovel constrn in proie the threadet lar conducting material. The shell is caused to engage the extensi n? as-i'hdic at 4, so that said shell e. lot be reedi moved from said extension .1 The top of shell 5 is prov ded with the inwardlyturned flange 6, which has a port-ion "7 formed with a downwardly deflected tongue-orterininal S, which adapted to bebent downwardly or in an oblique angle against theavall of the cavity or recess 10. This oavity ldfcontains the fuse, non-conducting wedge" and conducting clip to be hereafter refer: to and extends into the socket :ody -at ani an le to the axis thereof, and'comp'rise "th clined wall 11, which extends ant downwardly into the body to the be t, concavity 12, from which latter extends upwardly the diverging oppositewall 13, which merges into the wall :frorii which extendsupwardly the inclined. wall, -15, which may be parallelto the wall 1111211141 merges into the wall 9.- The carit i it) h s-the parallelside walls 16 as i cm} Fig. 2.,Wl1lCl1 atthe left in the wallsl? and 18, thetwolatte the sides of an angular shaped'c to whose tion of said channel being to permit the and pulled upwardly ready upward escape of the gases, when a fuse blows out, as will be hereafter explained'.

19' designates a clip or conductor of brass, or similar conducting material, whose top terminates in the laterally deflected contact point 20, which engages the top of the wedge-shaped non-conductor'or wedge 21'. The lower portion of the clip 19 is bent as indicated at 22, and extends upwardly a short distance as indicated at 23.

The wedge-shaped non-conductor 21 has the inclined walls 2-1 and25 which converge downwardly and terminate at their bottom I in the curved walls 26, there being a space between the wedge-shaped non-conductor 21,

and the clip 19, the lower portion of which space is occupied by the fuse 27, the latter -having the short upwardly extending portion 28 and the longer upwardly extending member 29, which may extend to the top of the wedge 21, as seen in Fig 1.

In order to enable the non-conducting wedge 21 and its adjuncts to be readily removed from theplug when desired,-by the thumb and fingers, I form the downwardly inclined walls 30, which slope from the outer portion of the socket body to about the dot-v ted line 31, seen in Fig. 1, whereby the wedge 21 and its adjuncts can be readily grasped from the cavity 10, when desired.

It will thus be seen from the foregoing that my novel plug has a cavity 10 therein which extends at an angle to the median line or axis of the plug, and that the walls 11 and 13 of said cavity converge down wardly, while the walls 15 and 11 are parallel and the walls 16 are also parallel.

It will further be seen that the walls 24: and 25 of the non-conducting wedge 21 converge downwardly and that the clip 19 when the parts are assembled is contiguous to the wall 11 of the cavity .10, the contact 20 engaging the top of the. wedge 21 and the -shaped bottom end of said cliprsurround ingthe bottom of the wedge 21, and hblding the" lower end of the fuse 27 in fixed position with respect to the bottom of the wedge 21.

It will further be apparent that by the wedging action of the non-conductor 21 with respect to the clip 19 and its adjuncts, allthe parts are firmly held in position, after being assembled.

The operation and manner of assembling the parts will be apparent to those skilled in the art. The lower end 27 of the fuse 29, having been bent around the lower end of the wedge 21, the clip 19 is then slipped u n the wedge, and the fuse, wedge andc ip are inserted into the position seen and properly retained by frictional contact.

The upper end of the fuse 29, forms a conor tongue 8, and in case the fuse blows out,

the gases have a free exit upwardly through the side channels formed by the walls 17 and 18.

For convenience of manufacture, I form the walls 11 and 15,. parallel by means of any suitable implement, but this is not essential, it being only-necessary that the side channels be formed in any suitable manner for the egress of the gases, when a fuse blows out.

It will be apparent that by reason of the provision of the cavity 10 having the walls 9 and 11 inclined in the manner described, in conjunction with the employment of the non-conducting wedge 21 shaped substantially as described, that when the threaded shell 5 is screwed into position and pressure is exerted upon the contact or terminal 20, the tendency will be to wedge the upper under surface of the fi serz29 tightly against the tongue, lip or contact point 8, thereby producing an effective electrical connection between the fuse and the contacting outer threaded shell 5. It will be further apparent that by constructing and assembling the wedge 21, clip 19 and fuse 29 in the manner described, these three elements can be readily inserted and withdrawn from the cavity 10" as a unit.

I -It will now be apparent that I have devised a novel and useful construction of an electric fuse plug, which embodies the features of advantage enumerated as desirable in the statement of the invention of the above description, and while I have in the present instance, shown and described preferred embodiments thereof which will give in practice satisfactory and reliable results, it is to be understood that the same is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described my invention, what I claim as new and desire to secure by Let--- ters Patent is 1. In a device of the character stated, a plug having a cavity therein, a non-conducting wedge, a conducting clip and a fuse adapted to be inserted and withdrawn from said cavity as a unit, and side channels extending from said fuse upwardly at each side of said wedge for permitting the escape of gases created when a fuse blows out.

2. In a device of the character stated, a I

body having a cavity therein contained in an upward extension from said body, a threaded shell of conducting material secured to said extension and having a clownwardly turned lip engaging a wall of said cavity, a non-conducting wedge, a clip engaging the top and bottom of said wedge,

and a fuse held between said clip and wedge and having its upper end contacting with the lip of said shell.

3. In a device of the character stated, a body haying an extension provided with a cai'ity therein, inclined at an angle to the median line of said body, a non-conducting wedge having downwardly converging walls, a conducting clip having a deflected upper portion engaging the top of said wedge and a bent bottom portion engaging the bottom of said wedge, a fuse having its lower end held between said clip and wedge, a. threaded casing engaging said extension, and means for forming a contact between the upper end of said fuse and said casing.

4C. In a device of the character stated, a

body having an extension provided with a thread d conducting shell, an inclined cavity in said extension, a portion of said shell having a lip deflected into said cavity, a wedge, clip and fuse adapted to be inserted into and withdrawn from said cavity as a unit, and side channels extending from said cavity upwardly at each side of said wedge to form passages for the escape of the gases created by a blown fuse.

5.111 a device of the character stated, a

plug having a cavity therein inclined at an 6. In a device of the character stated, a

plug having a cavity therein extending at an angle to its median line, a non-conducting wedge, a conducting clip, and a fuse,'adapted to be insertedand withdrawn from said cavity as a unit, the top of said wedge extending at a right angle to said median line, said channels extending from said fuse downwardly at each side for permitting the escape of gaseswhen the fuse blows out, and inclined side walls at the top of said plug for permitting the Wedge and its adjuncts to be readily grasped when it is desired to remove the same.

JOSEPH GLATZ. lVitnesses E. I'IAYWARD FAIRBANKS,

C. D. MCVAY.

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