US881967A - Electric insulator. - Google Patents

Description

No. 88L957. .PATENTED MAR. 17, 1908. G. "R, SL'SSBR. ELBGTRG INSULATR.

AMJLIGATIQN HLM) JAN, so, 1907.

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To all whom it 'may concern:

between said ends.

,PLENT OFFICE.

CHARLES R. SLUSSER., OF MONTPELIEBW lDAl-lO.

ELECTRIEGy INSULATOR.

' Specification of Letters Patent.

Patented March I7', 1908.

' flication filed January 30, 1907. lSerial No. 854,920.

Be it known that l., CHARLES R. Stassen, citizen ol' the United States, residing at Montpelier, in the county of Bear Lahe and andY useful Improvements in Electric lnsulaH tors, of which the following is 'a s pecil ication. This invention relates to insulators such as are used for supporting. heavy ormlight"elec:Y

ftriowires or nconductors, and particularly to that part ol' such insulators which holds the conductor, rather than the part which attaches the insulator' to its' support.

The general object of the invention is to prov-ide an insulator that shall be inore convenient in j construction work, repair work, and in changing lines, than are ordinary in sulators, and that at the same time shall be inex ensive.

Vidith suoli object in view, the insulator is formed by perforatingl a suitable insulating body diarnetrically, to receive the wire or conductor, and also slotting it to open the erforation laterally throughout Iits entire ength, the slot being inade to coincide with the ends of said perforation but made to deviate --frorn the vplane of the perforation AThe slot ybeing thus formed, the conductor can pass into it laterally only when itself bent, and when the conductor has been drawn straight/ijn the perforation,- it cannot be removed Alaterally therefroni. ,v

For convenience in description, ymerely, the insulator will be supposed in a 'Vertical position, ,and the supported conductor will be supposed in a horizontal plane.

In the accompanying drawings, Figure i is an axial section of a simple forrn of insulater involving rny invention. Fig. 2 is a side elevation of the-saine device. Fig. 3 is a plan view of the insulatorwith a conductor supported thereby nn'd secured by a tie wire.

4n these figures, A represents the body of an insulator of any suitable material and in this instance shown as adapted to be screwed upon a pin or peg in. the usual way, although any known means of support may be employed. Above the usual threaded cavity, the body is provided with. an approximately diametrical perforation B, and tbisis opened laterally throughout its length by a slot C extending therefrom tothe outer surf ace of the body. Upon the outer surface 'of the body, thel slot coincides with the end portions of the perforation, but be tween these two points the slot deviates noni the plane of its ends and otsaid perforationY ing body is rounded, and the iniddle point of the external path of the slot is at seine distance from the highest part oi' the block4 whereby one wall of the slot vtogsonie eX- tent exposed to serve as a l'oiui over-Which with the angle or curve of tbeslot and thus be instantly :fitted to enter the latter. lllhen .the conductor has been passed inward in the slot'to rest in the perforation, l, and has been nia-de nearly straigh t by tension, .it cannot pass laterally out o," the perforation nal'ly in the saine to any extent.

- ward directly toward the perforation but is approximately Vertical, as shown, until it nearly reaches the horizontal plane of the perforation, when itturns somewhat abrupt-l lyand extends to the. latter. ,By this construction, a very heavy body ol' material around which the slot passes, verl'1angs the wire at E, and that portion which was bent to 'lit the slot is not necessarily straightened when put in. place by the lineman, but inay remain bent until `at a later time tension. upon the wire straight-ens it. foration and slot are both large enough to leave sonic play for theordinary wire, a certain amount vof bending is in any case -possible, even when the wire has been forced completely within the perforation. lt is preferred to nialie the slot of :rpi'iroxinrately V-shape, as shown, but this forni muy be varied, and it is also usual to renin the outer ends of the perforation, as indicated :it lf.

ln Stringing the comluctor through a seh ries of n'ry insulators, ithas often been found advantageous to eniploy a vehicle carryiiig a light tower over which the conductor is paid out, a man at the top of the tower swinging the conductor alongside each insulator as it is reached, giving the wire a quick bend and slipping it into place during a momentary stop ol' the vehicle.

ln order that the conductor may ynot slip k,longitudinally so far as to be disengaged ,i froin many insulators, in case ol' breakage, it is desirable to tie the conductor at long i tion G ata convenient point. AV small wire,

` the conductor may be bent into conformity "f although it may be drawn along longitudi--- Preferalgily, the slot docs not extend in-l intervals, such'intervals commonly boing a- Preferably the upper portion of the insulat Since the perwithv a sniall perfora- A H, heing'pessed through this epertire its ends are wound snugly about the conductor D on each side or the .insulator and in close Contact with the same, end thereby longitudinal slippino is eieetuelly prevented. 1When it is desired to remove e longr these ties ere `first removed, when the wire een be drawn through e long` line of insulators.

lit be desired to put a new insulator in place of e broken one, it is quite possible to draw in enough sleek7 between tie poiilt-sI to allow the necessary hendin of the eonduetor.

Although the Wire wit 1in Ithe insulator cannot be re-heut so that the Wire can pass out laterally, one end of the Wire may he bent sharply et one side of the insulator and then by moving the body of the Wire longitudinally, the upturned end may be mede to traverse the slot, thus quickly freeing the wire.

Whetl claim is: l. Anlinsulator consisting of a body of insulatini'r materiel provided with a straight, epproxnnetely dieinetrieel perforation of ep Proxim ately the sire of the Wire to he carried,

section or wire7 4einem? and With en upwardly extendinV bent or distorted slot communicating Witx the entire length of seid perforation and extending to the outer surfeoe of said body; whereby the Wire when in place lies free in the middle of the body'but een be inserted or removed only When bent. `v

2. An insulator, the combination with a hody ol insulating nieterial provided With an approxinmtely dlametrical straight perforation of approximately the size of tl1e,wire to he Carriedand with an outwardly open slot eoindiding with said erforation throughout the entire length of t e latter and havinnr its middle outer portion deflected from the p ane of the perforation, and detachable devices for connecting seid oodvivith .the line wire,

carried thereby and adapted toresist slipping of said wire. y

In testimony whereof I have signed my neme .to this specification in the ,presence of two subscribing Witnesses.

CHARLES' Ri SIUSS'ER.

lWitnesses y FRANCIS S. MAGUIRE, WALLACE GREENE.

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