US774852A - Adjustable pendant. - Google Patents

Description

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No. 774,852. A PATENTBD Nov. 15, x1904.

1 E. J. SHAW.

ADJUSTABLE PENDANT.

APPLIOATION FILED MAR. 7, 1903.

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Patented November 15, 1904.

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EDWARD JOHN SHAW, OF VALSALL, ENGLAND.

ADJUSTABLE PENDANT.

SPECIFICATION forming part of Letters Patent No. 774,852, dated November 15, 1904.

Application filed March 7, 1903.

To a/ZZ whom it may concern:

Be it known that I, EDWARD JOHN SHAW, manufacturer, a subject of the King of England, residing at Lonsdale House, Lichfield Road, Walsall, in the county of Stafford, England, have invented a certain new and useful Adjustable Pendant, of which the following is a full, clear, and exact description, and for which I have applied for Letters Patent in Great Britain, dated January 21, 1903, and in Germany, dated February 2, 1903.

This invention relates to an adjustable pendant for hanging lamps, lamp-shades, covers, bird-cages, and other articles, the pendant consisting` essentially, of two drums or pulleys mounted on an axle supported at a determined height and the fiexible connections, which suspend, respectively, the lamp and the Y balance-weight, being wound on the pulleys in opposite directions, so that as one is wound up the other is unwound.

The invention also comprises means for continuously supplying electric current, oil, or gas to a lamp attached to this double-pulleyV pendant, and other portions relate to a friction or locking device for preventing the pulleys from rotating when the suspended articles are in the desired position and to means for holding the balance-weight centrally above the lamp.

On the annexed drawings, illustrating the invention applied to lamps, Figure l shows one form of the inventionviitted to a hanging oil-lamp. Fig. 2 shows another arrangement of the pulleys supporting a gas-lamp, and Fig. 3 shows a thirdV form of the invention applied to an electrical lamp. Fig. 4 is an elevation, part section, of the double pulley drawn on enlarged scale. Fig. 5 is a side view of one of the pulleys. Fig. 6 is a sectional elevation of the hollow-axle arrangement for a gas-lamp, and Fig. 7 shows a friction or lockingdevice on the axle. Fig. 8 is a view of agstop device for limiting the upward movement of the iiexible connection.

Two grooved drums or pulleys a b. are mounted on a' common axle c, so as to be fast thereto. This axle is supported at a height which may itself be permanently or adjustably fixed, as will be understood. In Fig. l

Serial No. 146,639. (No model.)

this axle is shown connected to a vertical pipe (l, secured to a ceiling-rose and passing between the separate pulleys. In Fig. 2 the pulleys are arranged contiguous to each other, and the axle is supported by a forked arm e. A flexible connection f g is secured upon each of the pulleys, these connections being wound in opposite directions and their free ends being secured, respectively, to a lamp and to a balance-weight. In Figs. l and 2 the balance weight is independent of the lamp; but in Fig. 3 it is shown hollowed centrally and arranged to slide upon the lamp connections. In Fig. 3 also two rollers b, pivoted on a forked arm mounted loosely on the axle c, serve asguides for the connections f g. It will be seen, therefore, that as one connection, f, is pulled down, rotating the pulley a, theother connection, g, is coiled upon the pulley because the pulleys a Z) rotate in the same direction; but the connections f g are wound inversely. Preferably the double pulley is formed as shown in Fig. 4, the pulleys being formed by a common disk forming a partition, and the pulleys and axle rotate in the forked arms e.

' Where an electric lamp is suspended from the pendant, (see Fig. 4,) the leads may pass down the pipe l and one of the arms e, electrical contact being made in any ordinary manner between the axlec and the connection f, supporting the lamp. This connection may be a flexible metallic pipe or a cloth-covered rubber pipe containing the electrical conductors supplyingthe lamp with energy. In the case of a gas-lamp, either household gas or acetylene gas, the service-pipe Z communicates with one of the hollowarms e, and this supplies gas to the hollow axle c. (See Fig. 6.) VIn the arrangement thereillustrated an annularV groove t' is formed on the periphery of the axle c, forming a continuation of the passage in. e, and an orifice 7c leads from this groove to the interior of the axle. The pulley a is provided with a central chamber Z, fitted with an indentation m, to which the iexible-pipe connection f is attached. This indentation is perforated to allow communication between the interior of the chamber Z and the pipef, as will be seen in Fig. 5, a por- IOO Y tion of the side of the chamber having' been torn away. A flexible pipe f is used, which will not be crushed and impede the flow of gas. A flexible metallic pipe is suitable. A second oriiice n is formed in the axle within the chamber Z, and gas passes from the axle c into chamber Z through this orifice a. In the case of an oil-lamp a similar continuous feed may be provided under pressure of a head of oil, the usual precautions against overflow being taken.

In Fig. 7 friction-plates o are mounted on the axle to prevent unintentional rotation of the pulleys a and b in their forked supports.

rI`he stop device (shown in Fig. 8) consists of a nntp, screw-threaded internally and screwed upon the flexible metallic pipe. Its upper face 2)/ is curved to the periphery7 of the pul ley b, so that when the stop j) rises with the flexible connection g it meets the pulley I) and by frictional engagement checks further upward movementof the dependent connection g.

The pulleys a may be of' equal size, or one may be larger in diameter than the other. In the latter case the balance-weight is preferably secured to the flexible connection coiled upon the smaller pulley.

Having thus described my invention, what I claim as such, and desire to secure by Letters Patent, is-- l. A pendant comprising an axle, a support for said axle` said axle being journaled in said support, grooved pulleys upon said axle, said pulleys being rotatable with said axle, flexible connections coiled upon said pulleys, said connections being formed of flexible metallic tubing and wound inversely upon said pulleys and adjustable stops screwed upon said iexible metallic tubes, said stops being shaped upon their upper faces to the curve of the pulley-rims.

2. A pendant for gas-lamps comprising a hollow axle, a forked support for the ends of EDWARD JOHN SHAW.

Witnesses:

WVM. E. GODFREY, SYDNEY H. PENN.

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