USRE8993E - Improvement in street-lamps - Google Patents

Description

E. BOESCH. Street Lamp.

No. 8,993. R-e'iss ued aegis, 1879.1

Mm ey -f.

UNITED STATES PATENT QFFICE.

EMIL BOESOH, OF SAN FRANCISCO, CALIFORNIA.

IMPROVEMENT IN STREET-LAMPS.

Specification forming part of Letters Patent No. 106,990, dated September 6, 1870; Reissue No. 8,993, dated December 9, 1879; application filed October 27, 1879. i

To all whom it may concern Be it known that I, EMIL Benson, of the city and county of San Francisco, State of California, have invented an Improved Lam p; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the drawings accompanying this specification, and forming a part of the same.

My invention relates more particularly to outside lamps; and its object is to so construct the lamp as to obtain an increased volume of light from the same burners now in use. This is efiected by the application. of

improved reflectors, which are adapted to be adjusted so that the light can be given a greater or less range, as desired, and be thrown out in every direction equally. The draft is also provided for in an improved manner, so that the efficiency of the lightis also increased thereby.

My invention further relates to an improved method of retaining the glass sides of the lamp in place, so that theycan be readily removed when it is desired either to clean or renew them.

In order to more fully illustrate and explain my invention, reference is had to the accompanying drawings, forming a part of this specification, in which- Figure 1 is a side elevation of my lamp. Figs.2 and 2 are views of a portion of one of the corner posts, showing their construction.

' Fig. 3 is a bottom view of the upper reflector.

Fig. 4 shows the device for holding the glass in place. Fig. 5 is a view of the perforated reflector.

The general form of my lamp is' similar to those ordinarily used.v

The bottom of the lamp, when used for gas, is left open, and a perforated reflector, A, is placed inside the lamp, so that it shall rest upon the lower rim of the lamp. This reflector is formed with four sloping sides, two of which are united at the top, so as to form a ridge similar to that formed by a hip-roof in architecture. A long narrow slot, at, is left between these two sides, through which the gas, when turned on, can be lighted from be- K connects its edges.

low. This slot also furnishes air directly to the flame, and aids to increase the light, at the same time causing it to burn steadily.

A small hole, I), is made at the middle of the slot a, into which the upper end of the gasburner enters.

The perforations in the reflector allow a sufficient amount of the light to pass downward immediately around the lamp-post, and also serve to provide fresh air to the flame.

The four standards 01 of the lamp-frame are formed of two pieces of sheet metal, K l, bent and united, as shown at Fig. 2. semicircular in form, while the piece or strip The strip K has two longitudinal grooves or channels formed in it, one near each edge, in which the edges of the adjoining pieces of glass are held. This peculiar manner of making the standards provides both the body of the standard and the side channels necessary for holding the glass sides in place.

A curved roof, B, is formed over the top of each glass side, which gradually rises and tapers toward the center, leaving channels f at the junction-line of each two of the roofs.

An outside chimney or protector, E, which is circular in form, is then placed over the chimney D, and secured to the ridges of the circular roofs. chimney is provided with cowls F F, which protect the draft and prevent dust and water from passing into the lamp.

The channels f are directly above the corner posts or standards, d, so that they form gutters to carry off the rain from the roof and keep it from running down the glass. This style of roof, while giving the lamp a handsome appearance, increases the area of the side openings and admits of the employment of upper reflectors, G, with as many curved faces as there are sides to the lamp. This reflector is made of one sheet of metal. An opening is left in its center to carry off the smoke and heat, and wh en made adjustable a long flange, H, is formed on'its inner side, of a'shape corresponding to the chimney D, and is held by flat springs 70 k, which are secured to the chimney near the roof, and bear against it. The

The piece l is The upper end of this outer flange H slides under these springs, and is held by them at whatever height it is desired to regulate it. v

The glass sides of the lamp, as above stated, are retained in the channels formed in the standards (I. In order to keep them steady and prevent their being displaced by a jar or other accident, a small curved sheet-metal box, I, is secured to the lamp immediatelyover the center of each arch, in. which the glass is to be placed. A slot, m, extends the entire length of the box in a position convenient to permit the upper edge of the glass to be slipped into it. A spring, n, is placed inside this box, being bent so as to spring both against the upper and lower sides of the box.

The upper edge of the glass 0 is first inserted in the slot in the box by compressing the spring, when it can be readily placed in the grooves prepared for it, the spring holding it firmly in place.

This manner of constructing lamps will readily recommend itself to persons familiar with their requirements.

Besides the advantages above enumerated, the lighting and extinguishing of the lamp, when gas is used, will be more readily accomplished than with those ordinarily used. This will be apparent when it is seen that the cock which lets the gas on is below the lamp and 1 spring a, substantially as and for the purpose altogether outside of it, and after it has been turned, by simply placing a lighted match or other flame inside the perforated reflector A, the gas will be lighted.

per vertically-adjustable reflector, Gr, of the lower pyramidal-shaped reflector having con caved perforated sides, substantially as and for the purpose set forth.

3. The pyramidal-shaped reflector A, having the perforated ooncaved sides, substantially as and for the purpose set forth.

4. The standards d, consisting of two parts, K and l, one adapted to overlap the other, and provide grooves to receive the edgesot' the glass of the lamp-i. 6., the part K is curvedand' recurved, as shown, substantially as: and

for the purpose set forth.

5. The adjust-able reflector Gr, having as many concave faces as there aresides to the lamp, and provided with the flange or sleeve- H, incombination with the springs 70, substantially as and for the purpose abovedescribed. 6. The box I, provided with the slot m and above described.

7. The above-describedstreet-lamp,in which are-combined the reflectors A G, chimney E, roof B B, with its channels ff, and the cowl's F and F, all combined and arranged sub stantially as specified.

In witness whereof I' have hereuntoset my hand and seal.

EMIL BOESOH. [L. s-.] Witnesses:

EDWARD E. OsBoRN, WM. T. CLARK.

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