US829646A - Insulator. - Google Patents

Description

'PATENTED AUG. 28, 1906.

W. T. GODDARD.

INSULATOR. APPLI'OATIQN FILED JAN. 7. 1905.

2 [ripen/to Fig.3,

Z/z'inesss UNITED sra rns rA'rENT OFFICE.

v WALTER T. GODDARD, OF VICTOR. NEW YORK, ASSIGNOH TO LOUKE TNSULATOR MANUFACTURING COMPANY, OF VICTOR, NEW YORK.

lNSULATOFi.

, made of porcelain and have one or more petg ticoats orbell-shaped flanges to increase their surface area and prevent surface leakage to the pin or support and are provided with retaining-grooves in which the conductor is secure by tie-wires. The heads or crowns of the insulators must be relatively thick to afford the necessary depth of groove for the conductor and strength to withstand the great strains to which the insulators are subjected in use, while the petticoats are preferably niade tlun to-decreasc the weight and cost of the insulators, which are often 1 very large, weighing many pounds each.

, cap or to) (lee duce a light, strong, and practical insulator ately o reat practical (lifiiculties are encountered in making this type of insulators on account of the difference in thickness of the different parts thereof, andiweak and faulty insulators often result. For this reason, therefore, the several etticoats are ordinarily made separf uniform thickness throughout and glazed or cementedtogether; but a strong piece containing a sufficiently con(uctorgroove cannot be made-of uni orm thickness, and it is this part which is the most difficult to make.

' The'objec'ts of the invention are to prowhich can, be' rnade at' -a reduced cost and af fords a secure support for he conductor and to rovide the insulator with a. separate me tallic seat or retainer in which the conductor can be readily and securely fastened, which will not lessentheelectrical efficiency of the conductor, andwhich enables the insulatorcap to he made of unifr'omthicl'rness throughout. "2'

In the accompanying drawings, Figure l is a side elevation of an insulator embodying the invention. Fig. 2 is a transverse sectional elevation thereof. Fig. 3 is a top plan view thereof. Fig. l4 is a fragmentary elevation showing a conductor-scat of modified rorm.

' Specification of Letters Patent.

Application filed January 7. 1905. Serial No. 239,995.

Patented Aug. 28, 1906.

The insulator shown in the drawings is made of porcelain .or analogous insulating material and has a plurality of petticoats A and B and a cap (1, which, as usual, are formed by separate bell-she cd pieces arranged one within the other an glazed or cemented. to gether. There may be one or more petticoats, as found necessary, or the cap may form the only flange. The crown I) of the insulator is made integrally with the upper piece orca C, which, .like the petticoatpieces A an( B, is ncade of substantially uniform thickness throughout, and is not, as is ordinarily the case thicker at its central portion and povided with a retaining-groove for the conductor.

The retaining-groovefor the conductor is formed in a seat or saddle- )ieoe E, which is separate from and secure preferably detachably, to the cap-piece. The conductorseat preferably consists of a trough-she. ed piece of metal or other suitable materia of the requisite strength, having a groove or concaved hearing for the conductor. In the construction shown in Figs. 1 to 3 the conduc tor-seat extends diametrically across the crown of the insulator, projecting laterally out therefrom at its opposite ends, and has attaching legs e, which straddle and are secured to the crown D bya split clamping band or collar F encircling the crown and grovided with a tightening screw or bolt f. he conductor can re retained in the seat or groove 'by the usual, tie wire or (indicated by dotted lines a 9,) twisted around. the conductor and projecting ends of the seat.

, The seat E, (shown in Fi .4,) which is intended for securing thecon uctor at the side of the insulator, is'permanently attached to or formed integrally with a split securing band or collar 'F", which is clamped about the crown of the insulator. The conductor can be tied in this seat by wires in the same manner as in the other construction or by the usual tie-Wire. L.

The conductor-seat in either form shown affords a deep groove for the conductor and a very strong and secure attachment. *Tlie insulator with the separate conductor-seat is lighter than an all porcelain insulator and can be manufactured at. much less expense.

by tie-wires 5 go (III There. is iitiienmterial *iillth-E? seat and.

if made 0% on magnetic metal its efiect in dissi n; t1evcimrge -ofrtbs-sandman by 111 s ziegiiglble, thus keqpmgthe ima cnargmg cur wt '20 a medium. The metab stamiai-ly unifim'nm thickness throughout, and

a; separaei conductomseut- Secured in said .2; An imu-l-at-or hailing a porcelain cappiece of substantially unifmmn thickness thmugheu't, and a separate conductor-seat secured tasaid cappiecaand consisting of a; .narrow strip having a. retaining-grom'e for tbs-conductor, subfitamtially as set forth.

3.- An inulafior ccmprising a nap-piece of substantially uniform fihickness throughout, a separate OURdUCtOFSP/E'at having a retaininggioova for the conductor, amid a split securing band for the conducter-seai clamped aboagu the crew 0f the sap-piece, substantially as set forth An insu'iasc; provided with an insumting cap-piese, a separate conductor-seat, and a; securim band fair said sond-umm -seat ciampad aiwutssdid' cappiece, substamiaiiy as set forih shaped can ducior eat secured; directly to said ncrrcanducting body with its enzis pr"- iecting' beyond the hndy to form 'sacnxing extensions far the mnductor, said cpnductor seat being materially narrowerthan said body, and'zi nam'ow securin -b'zmd for said nested. to Sitid sent at sapamted parts thex'eef, whereby ssud'seat and sacunngJiAn d cover only ameiatively small portion (if the body,

' her, 390%. I

- WALTER T. GGTDDARD.

Witnesses:

W. fiwmamimn U. A. i

5,; An insulator comprising a nan-conducii mg body, a ss-pamte gubs'mmmlly trougi'h c0nduct0r-seatenaircling mix badly and con- 1

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