US309539A - Hall lamp - Google Patents

Description

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L. F. GRISWOLD.

HALL LAMP. No. 309.539. Patented Dec. 23, 1884.

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L. P. GRISWOLD.

v HALL LAMP. No. 309,539. Patented Dec. 23, 1884..

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LEWIS F. GRISXVOLD, OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE CHARLES PARKER COMPANY, OF SAME PLACE.

HALL LAIVIP.

SPECIFICATION donning part of Letters Patent No. 309,539, dated December 213, 1884. Application filed April 12, 1884. (No model.)

To CLZZ whom it may concern:

Be it known that I, Lnwrs F. GRIswoLD, a citizen of the United States, residing at Meriden, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Hall-Lamps, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to hall-lamps which are suspended by chains and provided with countcrbalancing devices, which allow them to be raised and lowered, but hold them se eurely at any elevation. Such lamps are commonly provided with an inclosing-frame, and a shade held in said frame. In some instances the shade and lamp have been made movable in opposite directions, and in others the shade and frame are stationary and the lamp alone moves.

My present improvement pertains to the former class or kind of hall-lamps; and it consists,partly, in the combination, with the shade frame and suspensionchains, of a lamp-frame composed of an upper ring, lower ring, and guide-rods, said lamp-frame being movable in a direction opposite to that of the shade and within the same.

The said invention also consists, partly, in the combination of a weight with the lower ring or lamp-support, the weight being secured to or formed with said support, and counter-balancing the shade.

The said invention consists, finally, in the combination of bracing-arms with the shade ring, a collar, a guide-rod on which the collar moves, and suspension-chains attached at one end to said collar and at the other to the lamp-frame, substantially as set forth.

In the accompanying drawings, Figure 1 represents a vertical section of a hall-lamp embodying my invention. Fig. 2 represents a detail perspective view of the weight which serves as a lamp-support, and Fig. 3 represents a view similar to Fig. 1 of another form of my improved extension lamp-fixture.

In Figs. 1 and-2, A designates the canopy, having pulleys a in its slotted bottom, and a red, A, extending downward from its center, and provided with a reflector, e. The outer ends of the suspending-chains C are connect ed to a casting, B, which forms part of the shade-frame. The inner ends of said chains are attached to a ring, D, which is connected to a dish-shaped plate or casting, D, by guide rods E. The lamp F rests upon the Weight K, hereinafter described, which is attached to or forms part of said dish-shaped plate or casting, and the parts D D and rods E constitute an i'n'elosing-franie for said lamp. The

shade H (which may be either circular, square, or polygonal in cross-section) incloses said lamp. The frame of said shade consists of the upper casting, B, the lower casting, B, and the coimecting-pieces. It is obvious that when the parts are thus connected the shade and lamp will tend to counterbalance one another; hut as the lamp is not normally so heavy as the shade and shade-frame, Isupply the plate or casting Dwith a weight, K, which is attached to the top thereof under the lamp. This weight will compensate for the considerable amount of metal in the shade-frame, and enable the parts to work easily up and down, and to be held in the new positions to which they are thus adjusted. The support D is provided with a handle, G, which facilitates the drawing of said lamp below said shade, so that the chimney L may be removed and the lamp filled and cleaned. In this class of lamps the raising and lowering thereof are not for thepurp'ose of regulating illumination, but for the purpose of removal or replacement. The only operative position is the one shown within the shade; but the ability to lower the lamp is important in the operations of filling and cleaning, and the weight K is valuable, inasmuch as it prevents the lamp from being drawn up automatically when the grasp thereon is released. The guide-rods E prevent the lamp and its chimney from rattling against the shade and shade-frame as said lamp is drawn down and said shade-frame and shade are drawn up. This also is a novel feature, and one of great and obvious utility.

These rods also prevent the frame and shade from swinging away from the lamp-support, and always hold these parts together when fixture is extended and shortened.

In Fig. 3, the rod Ais provided with a sliding collar, 13, to which are attached the upper ends of diverging arms J, the lower ends of which are attached to the upper part of the shade-frame 1-3. The inner ends of the chains .0 are attached to said collar, and the outer ends of said chains are attached to the upper ring, D, of the lamp-frame. In this construction the lower casting, K, which forms the lamp-support, moves up within the lower edge of the shade-frame.

The letters of reference, except as hereinbefore noted, are the same in Figs. 1 and 3. Fig. 1 shows the lamp drawn down below the shade. Fig. 3 shows it pushed up within the same. Of course the arms J may be used on a fixture like that shown in Fig. 1 with very slight modifications of the other parts. Various other forms of shade may also be used with the devices described. It will be observed that Figs. 1 and 3 are equally applicable to the illustration of a circular or a rectangular shade.

I am aware that it is not broadly new to provide a lamp-support with guide-rods which work upward through a shade-ring, the chimney and shade moving together and the lamp moving independently.

I am also aware that it is not broadly new to attach the shade and lamp-support to opposite ends of chains passing over pulleys in the canopy, whereby the lamp counterbal ances the shade and chimney.

Having thus described myinvention, whatI claim as new, and desire to secure by Letters Patent, is l 1. In a hanging lamp, the combination of a shade, suspension-chains, and a lamp with a lamp-frame which is movable with said lamp, and consists of the rings D D and the interposed guide-rods E, the shade being attached to one end of each chain and the lamp-frame to the other end thereof, in order that they may move simultaneously in opposite directions, substantially as set forth.

2. The lamp-support D, provided with a weight, K, for counterbalancing the shade, in combination with a shade-frame and chains which suspend the shade and the lamp, sub- 45 stantially as set forth.

3. In combination with the collar 13 and the shade-frame, the arms J extending from said collar to said frame, the lamp-frame, the guide-rod A, and the suspending-chains, attached at one end to the shade-frame and at the other to the said collar, substantially as set forth.

4. A lamp provided with a chimney, asupport, and guide-rods, allmoving together, in combination with a shade, shade-frame, and suspending-chains, the shade and shade-frame counterbalancing the lamp-chimney, support, and guide-rods, substantially as shown.

In testimony whereof I affix my signature in 60 presence of two witnesses.

LEWIS F. GRISWOLD.

Vitnesses:

DEXTER W. PARKER, RALPH A. PALMER.

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