US474913A

US474913A - George p

Info

Publication number: US474913A
Authority: US
Publication date: 1892-05-17
Anticipated expiration: 1909-05-17

Description

(No Model.)

G. F. LOGKWOOD.

- INSULATED GEAR WHEEL.

Patented May 17, 1892.

INVENTOR BY W ATTORNEY UNITED STATES PATENT OFFICE.

GEORGE F. LOCKWOOD, OF SAGINAIV, MICHIGAN, ASSIGNOR OF ONE-HALF TO JOHN F. BARROI VS, OF SAME PLACE.

INSULATED G EAR-WHEEL.

SPECIFICATION forming part of Letters Patent NO. 474,913, dated May 17, 1892.

Application filed December 10, 1891. Serial No. 414.598. (N model.)

To all whom it may concern: slid upon the nave. It maybe madein layers Beitknown that I,GEORGEF.LOCKWOOD,a or in one mass. Then the rim 4 is pressed citizen of the United States, residing at Sagiupon the insulation of the lugs 4'4 in the coro naw, in the county of Saginaw and State of responding grooves. 5 Michigan, have invented a certain new and 5 is a circular plate of same size as plate 2 useful Insulated Gear-WVheel; andIdo declare and adapted to screw on the threaded end of the following to be a full, clear, and exact de the nave and press against the insulation 3 soription of the invention,such as will enable and hold it in its place. After it has been others skilled in the art to which it appertains thoroughly screwed down the pin 7 is put 1n,

[0 to make and use thesame, referencebeing had passing through the plate 5 into the insulato the accompanying drawings, and to the fig tion 3, and serves to keep the plate 5 from ures of reference marked thereon, which form unscrewing. a part of this specification. I do not wish to confine myself to any spe- My invention relates to insulated gearing cial form of mechanicalconstruction, andany 15 usedin cars propelled by electricity or to any change may be made within ordinary memachine using gearing run by electricity. Its chanical skill without departing from the object is to provide a gear-wheel that is duprinciple of my invention.

rable and at the same time be a perfect insu- Having thus described myinvention, what I lator. claim as new, and desire to secure by Letters zo Figure l is a sectional end view of the rim. Patent, is

Fig. 2 is a sectional end view of the nave. Fig. 1. In an insulated gear-wheel, the combina- 3 represents the insulation. Fig. 4is atranstion, with a metal nave having longitudinal verse sectional view of the complete wheel. transverse lugs and the metal rim having lon- 0 In the drawings, 1 is the nave of the geargitudinal transverse lugs upon its inner cir- 25 wheel, made in the usual form and having cumference,of a non-conducting material becast to one end thereof the circular plate 2 tween and separating the rim and nave and and upon its outer surface one or more longiprovided with grooves for engaging the lugs tudinal transverse lugs 1' 1. Screw-threads on the rim and nave, and plates secured to are formed upon the other end of the nave. 4 the endsof the nave for holding the non-con- 0 is the rim of the wheel, having gearing upon ducting material in place, said plates being its engaging-surface. Between the rim4 and separated from the rim by the non-conductthe nave 1 is non-conducting material or ining material, substantially as described.

'sulation 3, having grooves that fit upon the 2. An insulated gear-Wheel consisting of lugs 1' 1' of the nave. The rim 4 has upon the metal nave 1, having lugs 1' 1" and a 5 its inner surface one or more transverse lugs plate 2 cast to one end thereof, the other end 4 4, fitting into corresponding grooves in the screw-threaded, the non-conductor 3, the metal non-conductor The diameter of the plates rim 4, having lugs 4 4', the plate 5, screwing is about one-half inch larger than the inside upon the threaded end of the nave, and the diameter of the rim. 6 6 are projecting cirpin 7, passing through the plate 5 into the 0 cumferential edges of the insulation, and are non-conductor, substantially as described.

for the purpose of separating the plates 2 and In testimony whereof I affix my signature in 5 from the metal rim 4. In the drawingsI have presence of two Witnesses. these edges set into grooves at the edge of the inner surface of the rim, but of larger diam- GEORGE LOCKWOOD' 45 eter than the plates so as to separate them Witnesses:

from the rim. The insulation 3 is formed J. F. BARROWS, with the grooves heretofore mentioned and A. H. SWARTHOUT.