Improvements in Electric Incandescence Lamp Pendants or Brackets.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Electric Incandescence Lamp Pendants or Brackets.
We, HUGO HIRST, of 69-71-88-92, Queen Victoria Street, in the City and
County of London, Electrical Engineer, and JAMES MURPHY, of 8, Suffolk Lane,
in the City and County of London, Contractor, do hereby declare the nature of
this invention to be as follows:-
Our invention relates to certain improvements in incandescence electric lamp
pendants or brackets, and has for its object the provision of a radial swing or
traverse, in addition to the ordinary balanced rise and fall of the lamp; thus
increasing the area of illumination without removing said lamp.
In carrying our invention into effect we employ a pivotted arm or swing
bracket, carrying the lamp or lamps suspended over a pulley at its extremity
by a flexible double conductor the other end of which is connected to the circuit
through a suitable switch or the like, and is passed over a pulley or pulleys to
allow of a vertical movement of the lamp or lamps, the radial movement being
given by the pivotted lever or beam aforesaid, and within its range from the
pivot to the end thereof.
The essential feature of our said invention is in the construction and employ-
ment of a radial pivotted arm, carrying a counterpoised lamp or lamps capable
of vertical adjustment or arrangement.
1
T
1000
FREDK. WALKER,
73, St. Stephen's Road, Upton Park, London, E., Agent for the Applicants.
Improvements in Electric Incandescence Lamp Pendants or Brackets.
We, HUGO HIRST, of 69-71-SS-92, Queen Victoria Street, in the City and
County of London, Electrical Engineer, and JAMES MURPHY, of No. S, Suffolk
Lane, Cannon Street, in the City and County of London, Contractor, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement: —
Our invention relates to certain improvements in incandescence electric lamp
pendants or brackets, and has for its object the provision of a radial swing or
traverse in addition to the ordinary balanced rise and fall of the lamp; thus
increasing the area of illumination without removing said lamp.

page_text: In order that our invention may be the better understood, we have appended
the accompanying two sheets of drawings, in which Figure 1 Sheet 1 is an eleva-
tion of one form of the device, and Figure 2 upon the same sheet is a plan view
thereof. Figure 3 Sheet 2 is an elevation of a compound pulley device which
is a modification, and Figure 4 upon the same sheet is a plan view of the slide
shown detached. Similar letters of reference indicate corresponding parts
throughout the several views.
In carrying our invention into effect we employ a pivotted arm or swing
bracket A having a slide B carrying a pulley from which is suspended the
lamp L by the flexible double conductor a connected to the leads at the pivot b
and fixed at c and controlled by the counter weight W. Thus a vertical arrange-
ment or disposition of the lamp is possible, and also a radial movement as shown
by the dotted outlines on the plan view Figure 2, in the direction of the arrows,
whilst the slide B may be moved along the arm A from end to end, the flexible
conductor a being of sufficient length from 6 to c to allow of this.
The modification shown by Figure 3 Sheet 2 shows a pair of pulleys CC sup-
ported by the slide B and carrying the lamp L suspended by the double flexible
conductor a and balanced by the counterweight W, a guide bar & being intro-
duced in this case to keep the weight W. steady. We prefer to slit the slide B
as shown by the plan view Figure 4 Sheet 2, so that the tongues thus formed
may grip the arm A and prevent the counter weight W from drawing said slide B
out of the desired position.
Having now particularly described and ascertained the nature of our said in-
vention, and in what manner the same is to be performed, we declare that what
we claim is:
First. In a pendant or bracket for incandescence electric lamps, the construc-
tion and arrangement of a slide B carrying a lamp L and a counterweight W so
that the position of said lamp may be varied longitudinally in respect of the
arm A, and vertically, and also radially from the pivot substantially as herein
described and shown by the appended drawings.
Second. In a pendant or bracket for incandescence electric lamps the con-
struction and arrangement of a slit and tongued slide B, in combination with a
pivotted arm A and a balanced lamp L, substantially as and for the purposes
herein described and shown by the appended drawings.
Dated this 20th day of October 1800
FREDK. WALKER,
73, St. Stephen's Road, Upton Park, London, E., Agent for the Applicants.