Improvements connected with the Apparatus for Raising or Lowering the Centre Lights of Chandeliers and Electroliers
Year: 1893

page_text: Date of Application, 4th Apr., 1893
Complete Specification Left, 23rd May, 1893-Accepted, 5th Aug., 1893
PROVISIONAL SPECIFICATION.
Improvements connected with the Apparatus for Raising or
Lowering the Centre Lights of Chandeliers and Electroliers.
I, ROBERT HALL BEST of Cambray Works Handsworth Birmingham,
Chandelier Manufacturer do hereby declare the nature of this invention to be as
follows: :-
This invention refers more particularly to the means of raising and lowering the
centre light in such lamps as are usually known as suspensions, shade lamps and
reflector lamps. Hitherto these lights have been raised or lowered by means of
waterslides, stuffing box or pulley slides and balanced by means of counterpoise
weights attached to chains or cords running over pulley-wheels, and the length of
the slide has been curtailed and the light has been confined to the area situated
central with the ball joint or suspending screw of the suspension or shade light
while the chains have been liable to slip off the pullies and to be noisy and
vibrating in working.
To avoid these defects I employ a fitting of the nature of a long crank. I attach
the rod of the centre or reflector light to the part corresponding to the gudgeon
or crank pin in a crank, and for the purpose of balancing the light I lengthen the
sides of the crank fitting in a line beyond its axle and away from the crank pin
and by weighting these extensions balance the lamp in any position.
Dated this Third day of April 1893.
ROBERT HALL BEST.
COMPLETE SPECIFICATION.
Improvements connected with the Apparatus for Raising or
Lowering the Centre Lights of Chandeliers and Electroliers.
I, ROBERT HALL BEST of Cambray Works, Handsworth, Birmingham,
Manufacturer, do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement :-
This invention refers more particularly to the means of raising and lowering the
centre light in such lamps as are usually known as suspensions, shade or reflector
lamps, but is also applicable to a variety of lamps, as set forth in this Specification.
Hitherto these lights have raised or lowered by means of such arrangements as
water-slide, stuffing box, or pulley slides, and balanced by means of counterpois
weights attached to chains or cords-running over pulley wheels; and the length of
the slide has been curtailed, and the light has been confined-to-the_area situated
centrally with the ball joint or suspending screw of the suspension or shade light,
while the chains have been liable to slip off the pulleys, and to be noisy and
vibrating in working.
To avoid these defects I employ a fitting of the nature of a long crank. I
attach the rod of the centre light or the reflector light to the part corresponding to
the gudgeon or crank-pin in a crank, and for the purpose of balancing the light I
lengthen the sides of the crank fitting in a line beyond its axle and away from the
crank-pin, and by weighting these extensions I balance the lamp in any position.
The accompanying drawings will help to make clear the nature of my invention
and the manner in which I carry it into effect.
Fig. 1 is a plan of one of my suspension lamps as seen from above. And
Fig. 2 an elevation of the same shewing in dotted lines some of the various
positions into which the light may be placed.

page_text: (a) is the rod of the centre light (1), attached to the crank (c) by means of the
swivel joint or other suitable joint (b) corresponding to the gudgeon or crank-pin
in a crank for the purpose of keeping the rod (a) always in a perpendicular
position. (c) is the crank arm attached to the descending rod (e) at the joint (d),
the said joint (d) corresponding to the axle of a crank. The rod (e) is hung by
the ordinary suspending screw or by the ordinary ball joint (f). (h) (h) are the
extended portions of the crank carrying the counterpois weights (g). By con-
structing these centre or reflector lights in this way they can be placed and
counterpoised in a variety of positions, such for instance as indicated in dotted
lines, with the greatest possible ease. Although in the drawings 1 have shewn two
arms (c) and counterpois weights (9) I can if desired use one or more of either and
I do not confine myself to but one descending rod (e).
The arms (c) may be used to carry the gas or the electric wire, or in the case
of the use of gas a flexible tube (r) to (a) may be employed and in the case of the
use of electricity the wires may be independent of the arm or arms (c) and carried
in the same way as the flexible tube.
The arm (c) in its described mode of application may be adapted to carry oil,
candle, or other lights, or any form of lamp or lantern.
Referring to the drawings it will be seen that if the rod (e) be extended down-
wards to carry an ordinary gas or other chandelier the arm (c) may be made long
enough to enable the lamp (1) to extend when drawn down, outside the lights of
the chandelier.
This arrangement for raising and lowering the light may be applied to all bracket
lights or standard lamps in which cases they may be applied to gas, electric, oil or
candle lamps or lights.
I do not confine myself to applying counterpois weights precisely as illustrated,
as other means may be adopted to counteract the weight of lamp carried on the
arins.
By this arrangement a lamp when drawn up, extending from the ceiling, 3 ft.,
may be drawn down so as to extend 6 ft. from the ceiling, a relative distance which
cannot be attained by any other gas lamp. And such a lamp having a crank
arm 1 ft. 6 ins. long will enable the light to be placed over any spot situated within
a circle having a diameter of 3 ft.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I.
claim is :
1st. Raising and lowering centre lights of chandeliers and electroliers, shade
or reflector lamps by means of a crank arm and counterpois weight substantially as
herein set forth.
2nd. Applying the herein described principle of the crank arm and counterpois
weight for the purpose of suspending oil, candle or other lights or any description
of lamp or lantern.
3rd. Applying the herein described principle of the crank arm and counterpois
weight to bracket and standard lights.
Dated this 19th day of May 1893.
HENRY F. TALBOT,
7, Cherry Street, Birmingham, Agent for the Applicant.