US542713A

US542713A - Fuse-holder

Info

Publication number: US542713A
Authority: US
Publication date: 1895-07-16
Anticipated expiration: 1912-07-16

Description

rNo Model.)

L. C. ORRELL.

' FUSE HOLDER.

110.542,713. Patented July 16,1895.

Zini, L 0 E M .E 0 @UNIE s i* QM@ af 2 1:12 i

UNTTED STATES PATENT Genion.

I LESLIE CHATHAM ORRELL, OF BELLEVUE, KENTUCKY.

FUSE-HOLDER.

SPECIFICATION forming part of Letters Patent No. 542,713, dated July 16, 1895.

Application iiled October 22, 1894:. Serial No; 526,574. (No model.)

To @ZZ whom t may concern:

Be it known that I, LESLIE CHATHAM OR- .RELL, a citizen of the United States, and a resident of the city of Bellevue, in the county of Campbell and State of Kentucky, haveinvented certain new and useful Improvements in Fuse-Holders, of which the following is a specification.

The several features of my invention and the various advantages resulting from their use, conjointly or otherwise, will be apparent from the following description and claims:

In the accompanying drawings, making a part of this application, and to which reference is hereby made, Figure l represents a plan view of a fuse-holder embodying my invention, but without those features ot' invention which relate to the cover, the cover being absent from this sketch. Fig. 2 is a vertical section thereof in the plane of the dotted line 2 2 of Fig. l. Fig. 3 is an end elevation of the holder, shownin Fig. l. Fig. itis avertical transverse section taken in the plane of the dotted line 4 4 of Fig. 6 and showing the cover in position on the holder. Fig. 5 is an end view of the fuse-holder and cover. Fig. G is a top or plan view of the cover. Fig. 7 is a. detail plan view of the fuse-wire, showing how it is bent and where cut oft when applied to the fuse-holder. Fig. 8 is an eleva tion ot' one portion of the fuse-holder, showing the mode of operating it when putting the fuse in place. Fig. 9 is a top view of the stationary piece or plate and ot' the sliding piece separated from one another. Fig. l0 is a side or edge View of the sliding piece.

A indicates the base or supporting-block. In this block are the recesses B B, preferably of equal size. (See Fig. 2.) In each end portion of the block is located a device for holding the adjacent end of the fuse. Each of these devices is alike and constructed as follows: The upper plate or part C2 of an angulated metallic stationary piece C rests upon the upper surface of the block A. The iniddle plate or portion C3 of this piece C is vertical and lies against the adjacent wall of the recess B. The lower end or plate C17x of the piece C extends across the recess upon the bottom of the latter. Each side edge of the vertical portion C of the piece C is provided with a wing or extension C bent around in front of the part C3 and toward the vertical center of the latter, thus forming a loop D.

The sliding piece E consists of a horizontal portion E2 and a vertical portion ES. Vhen the piece E is in position, the vertical portion E3 is in the loop D, as shown. There is a guiding opening EA1 in piece E, and through this passes rod F, fixed at base, preferably as shown, by being screwed or riveted to the lower plate Cdk of the piece C. This rod F serves to guide the one end of the sliding piece E, while the conjunction of part E3 of the latter with the loop D, as mentioned, serves to guide the other end of said piece E. At the top end of the rod F and above the sliding piece E is fixed a head or contactpiece H for engagement with the fusewire.

A suitable spring K, preferably a coiled one, embracing the rod F, as shown, and compressed between a suitable base, as plate C4, and the part E3 of plate E serves to continually press the latter toward head Il.

The stationary piece C is suitably held in position, preferably, by a bolt or screw J extending up through the block A and engaging a thread in the part C2 of piece C.

The contact L for the line-wire consists of a screw L2, having a head L3, preferably accompanied by a washer L4 on the shank of the screw, the latter entering the plate O2 and screwed therein.

Suitable means for fastening the block are to be employed--a preferred means being the screw M, passing through the center of the block A and screwing into the support, to which the fuse-holder block A is connected.

The block A is preferably made of porcelain.

l have constructed an appropriate cover for the fuse-holder. This cover is preferably made ot' enameled ware. The cover N consists of a top piece N2 and anges N3, extending down from the end edges of the top, and flanges N4 extending down from the side edges of the top. To two opposite lianges, as N4N4, are respectively secured spring-catches P, which engage detents R of the holder at their respective sides thereof. l have devised a preferred form of these catches, to wit: that shown, consisting of a spring-plate having a bent or bowed portion P2, received into a similar-shaped (concave) recess R2in the adjacent side of the block A. In consequence of the IOO tion .in an accurate manner.

inclinations of the bowed portion of the catch, the latter willbe unlatchedbya forceful pull von the cover, withdrawing it from the block A, and can be latched thereto by pressing the cover on and toward the block. Suitable room for the latches to move back is provided. A preferred provision for this ip-urposeconssts of the recesses N5 in the cover.

I will now proceed to describe the mode in which the tuseholder is operated and operates. sired thickness is -bent `to form a hook, substantially as shown in solid lines in Fig. 7. One of the sliding pieces -E-take, for example, the right-hand one (see Figs. 2 and 8)-' is depressed. An easy way .of-so .doing is by means of .a small screwdriver, .knit'ebl'ada lead-pencil, or the like. The hooked end of the fuse-wire S is bent around the rodFabove presses the wire S 4against :the contact ll.

This y-end vof the wireS .is thus firmly secured The wire .S is now drawn taut in the-.direction of thefother or ,left-hand contact i in place.

H. The :sliding Vpiece E under this con-ltact is no-.w .depressed and :the taut wire brought against the rod F of said piece E, kabove .the

l-atterand beneath thecontact H, is .then'bent around .the rod F, substantially-as `shown in 1 dotted lines in Fig. `'7. The .sliding-.piece E is now allowed to rise and the wire is gripped securely between it `and thecontact Habove. l

The lfuse is readily cu't-oi .from .the rest-.of :the wire by the end of .a screwdriver Aor a knife.

The fuse is now in place and will .remain in l position runt-il burned out .bya-n-.electfric-c1urrent .of greater powerthan the fuse will carry.

The operation of .a fuseand its purpose in relation to the `.transmission and @prevention and diversion .of electric currents is too lwell known to jfustify :any .explanation here.

Among y.the various advantages lof my invention 'may be menti-cned the following, vto wit: The fuse can be readily placed lin vposi- 'The desired length of fuse can always be obtained. There is no danger of put-ting on too much fuse or of .bending it around .the contact inan improper manner.

In :the ordinary meth-od `of ,attaching the fuse-viz., puttin-g it under ,a nut `and-.screwing down ,the lat'ter--the fuse-wire is 'liable to become'wound on itself, so .as to cause too much fuse to be present. In such event the fuse is often .stretched tooimuch .and .the carryingfcapacity of .it is diminished, and it often melts longbefore :the amount of electric current which would vbe injurious is reached. For example, suppose its carrying `capacity is three ampres; by stretching the fuse its capacity Imay be reduced one-half .an ampere. It will be burned out by a current not suffi- -cient to d-o the ordinary work required, it being understood that the amoiunzt of electric One end of a fuse-wire, as S,of the de-V current .required is between two and three ampres. In other cases the nut in being screwed up breaks the fuse and wastes it. I-n

still other cases the nut in being screwed up 7o loops the fuse more or less, and to that eX- ltent increases its carrying capacity beyond what it was intended to carry, and thereby ofthe `fusewire, and I am enabled to readily 8o apply this wire, (of any desired thickness,) because the construction of ymygrippi-ng device enables me so todo.

Where the-coverismade of enameled ware,

it 'will lfor :econem y Aof 'man utactu re be .bulgedl 8 5 at IV W .to :provide .recesses N5 N5, wherein the :springs may react when the flatter are pushed back in .theact-.of locking .the cover on the holder-block or unlockingittherefrrom.

.It is proposed .toifreqiuently:associate one or 9o more setsof :fuse-holders .together luipon the same block, substantially fas shown.

WihatI claim -as .newand of :my invention, and desire .to secure by Letters Patent, is-

l. In a fnsefholder, the .piece Ohaving the loop D, and-the ypiece E having part E3 sliding in loop D, and .a con-tact as 1H over :the piece E2., :and .means for elastically pressing the piece Eagain'st .the contact, :substantially as .and for the purposes s-pecitied.

2. In a .f use holder, .the piece C3, having :the loop D, `and 'the piece E having part Esliding in loop D, anda contact .as H over .the piece E2, a.n.d means tor elasticallly pressing the piece E against the contact, .and rod F passing through .the fpiece E2 :and carrying the said contact, substantially .as .and :for .the purposes specified.

`3. The combination of the piece C2, loop D thereof, .piece E having pieces E2 and E3, fthe latter engaging the loop D, rod F .extending through Vpiece E2, contact H on the .said rod, and .spring K :embracing said rod behind piece E2,.substantiallyas and for the purposes specified.

4. The coinbinationof `the angul'a-ted pieces C2 and C2, secured together, and the wingsCf in one `with pieceC3,and piece E hav-ing parts E2 E2, of which E2 engages the Awings C5., vrod F through part E2,an.d super-incumbent contact H, spring Kpressing piece E toward contact I-I, .substantially as fand tor .th-e purposes specified. p 2

5. The combination of .the afngulated piece C having .part C3, .and bottom extension C, and loop D, .fand sliding piece E, havin-g parts E2, E2, the latter engaging the loop and rod F fixed in bottom C4, and .passing through the part E2, and .contact H, on the upper end -of said rod, vand .spring for elevating said piece E, .substantially asa-nd for the purposes Vspecified.

IOO

IIO

' 6. The combination of the angulated piece C having the piece C2, part C2, and bottom eX- tension C, and loop D, and sliding piece E, having parts E2, E2, the latter engaging the loop and rod E fixed in bottom C4, and passing through the part E2, and Contact H, on the upper end of said rod, and spring for elevating said piece E, and the line Contact adjustment L xed to piece C2, substantially as and for the purposes speoied.

7. The combination of the angulated piece C having the piece C2, part C3, and bottom extension C4, and loop D, and sliding piece E, having parts E2, E2, the latter engaging the loop and rod F fixed in bottom C4, and passing through the part E2, and .Contact H, on the upper end of said rod, and spring embracing the rod F, for elevating said piece E, and the line Contact adjustment L xed to piece C2, substantially as and for the purposes 2o plate G2 on top of block, vertical part C2 at z5 wall of recess, and having loop D, bottom extension C4, at bottom of recess,V and piece E whose part E3 enters said loop D, rod F xed to extension G4, and extended through part E2, and Contact II thereon, a coiled spring K 3o embracing` the rod F between extension C4 and part E2, and located in said recess, substantially as and for the purposes specified.

LESLIE GHATHAM ORRELL. Attest:

A. S. LUDLoW, CHARLES F. SPIEGEL.