Halp to james rorke
US 241730 A
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Description (OCR text may contain errors)
P. SGHNEIDER. Combined Globe and Chimney for Lamps.
Patented May 11, 1881.
, INVENTOR ATTORNEY WITNESSES N. PETERS. HlultrLiillngnpMf. warn- 1m n.0,
UNITED STATES PATENT OFFICE.
PETER SCHNEIDER, OF BROOKLYN, E. D., NEW YORK, ASSIGNOR OF ONE- HALF TO JAMES RORKE, OF SAME PLACE.
COMBINED GLOBE AND CHIMNEY FOR LAMPS.
SPECIFICATION forming part of Letters Patent No. 241,730, dated May 17, 18-81.
Application filed September 2, 1879.
To all whom it may concern Be it known that I, PETER SCHNEIDER, of Brooklyn, Eastern District, in the county of Kings and State of New York, have invented a new and Improved Combination Globe and Chimney for Lamps, of which the following is a specification.
My invention relates to improvements in that class of non -reversible combination globes and chimneys for lamps and other similar purposes, wherein the top or chimney portion is adapted to serve as a shade; and the object thereof is to connect the shade and globe together, so that the light which passes through the globe will not be intercepted by the shade, but will pass out into the surrounding space; also, to make the connection in such a manner that the contraction and expansion at the base of the shade and the top of the globe will be about equal, and fracture thereby avoided.
The invention consists, first, of a transparent globe surmounted by a bell-shaped opaque or semi-opaque shade which has its top 0011- tracted to form a chimney, and the base joined to the globe, but not extended beyond the same, and in connecting the top of the globe and the shade together so that the lateral extension of the top opening of the globe is beyond or outside of the base of the globe, and at the same time the horizontal dimensions of the shade do not exceed the globe.
111 the accompanying drawings, Figure 1 represents a side elevation of my improved globe and chimney; and Fig. 2 represents a vertical section-of the same, taken on linear of Fig. 1.
Referring to the drawings, A represents the globe, the base a of which may be adapted to the burner with which the globe is used. The convex sides I) b of the globe and its top (I extend laterally beyond the base a, whereby the opening 0 in the top of the globe is 0011- siderably larger than the base a.
B represents the shade, which is contracted at the top portion, D, to form a throat, f, of less area laterally than the opening 9 in the base a, so as to serve as a chimney. The base of shade B is formed of a flange, h, and this flange is connected with the rim 1 projecting outward from the top (I of the globe, the shade,
' flange, rim, and globe all being in one piece.
The base-flange 71. has about the same horizontal dimensions as the globe at its widest portion, (indicated by the horizontal dotted line beyond the sides of the globe at their widestpart.
Second, the rays of light passing through the globe, as indicated by the dotted lines, are not intercepted by the shade, but are thrown out into the surrounding space, while therays which pass upward are intercepted and thrown down. By this arrangement the circle of illumination is not contracted by the shade, and at the same time theshade intercepts and throws down the rays of lightwhich would otherwise be thrown upward.
The top dot the globe being extended horizontally beyond the base a, the overheating of the connection between the globe and shade is [)10"6l1t6d, and as the base-flange h is not extended beyond the globe, it will be seen that the top d and rim Zare at such a distance from the line of draft that they are about equally. exposed to the heat when the lamp is lighted, and to about the same rate of cooling.
I claim As an improvement in non-reversible combination globes and chimneys formed in one piece, the globe A, having its top (1 extended laterally beyond the base of the globe, and provided with the outwardly-projecting horizontal rim 1, in combination with the bell-shaped shade B, contracted to form a chimney, f, and having its base provided with a flange, h, connected to the rim Z about in line with the sides I) of the globe, and so as not to extend outside of said sides laterally, whereby the connection between the globe and shade is extended laterally beyond the base of the globe and out of the line of draft through the chimney, substantially as herein shown and described.
W. 0. Doom, 0. SEDGWICK.