An Improvement or Improvements in the Method of Raising or Lowering Electric Light Fittings, Gas Fittings, and the like.
Year: 1896

page_text: Date of Application, 18th Apr., 1896
Complete Specification Left, 18th Jan., 1897-Accepted, 10th Apr., 1897
An Improvement or Improvements in the Method of Raising or
Lowering Electric Light Fittings, Gas Fittings, and the like.
1, PERCY GARNISS EBBUTT, of Plume Works, Aston, Birmingham, in the
County of Warwickshire, Electrical Engineer, do hereby declare the nature of
this invention to be as follows:-
My invention consists of the herein-described improvements in connection with
the raising or lowering of electric light, gas, oil, and candle fittings and, the
like.
In most devices for raising and lowering fittings one or more counterweights are
employed either in conjunction with chains which are likely to corrode and break
or by means of a lever arm which is unsightly and these defects it is the object of
my invention to overcome.
According to my invention I provide a powerful spring or more than one spring
which can be regulated to any desired strength to force the surface of one part
of the fitting against the surface of another part so strongly that there shall
be sufficient friction between the parts to maintain the fitting in any desired.
position.
Dated this 17th day of April 1896.
PERCY GARNISS EBBUTT.
An Improvement or Improvements in the Method of Raising or
Lowering Electric Light Fittings, Gas Fittings, and the like.
I, PERCY GARNISS EBBUTT, of Plume Works, Aston, Birmingham, in the
County of Warwickshire, Electrical Engineer 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:-
My invention consists of the hereinafter described improvements in or connected.
with electric, gas, oil, or candle fittings and the like, for the purpose of ensuring a
simple, reliable and sightly method of raising, lowering and generally twisting the
said fittings about to any desired position or direction. In most devices for
raising and lowering fittings, one or more counterweights are employed, either
in conjunction with chains, which are likely to corrode or break, or by means of
a lever arm, which is unsightly and expensive, and these defects it is the object of
my invention to overcome.
According to my invention, I provide a spring or springs, either with or without
an adjustment for regulating the strength of same, so arranged as to force one part
of the fitting against another part, thereby creating sufficient friction to maintain
the norte in any desired nosition

page_text: One application of my invention is shown in Figs. 1, 2, and 3, of the accompanying
drawings.
I will now proceed to describe my invention with reference to the accompanying
drawings.
Fig. 1. is a side elevation of one form of swing joint or body fitted with spring
plunger to allow of arm being raised or lowered.
Fig. 2. is a front elevation of same joint or body showing slot in which arm can
move vertically.
Fig. 3. is a side elevation and part section of spring plunger as used in Fig. 1,
showing action of plunger and spring and nut removed.
Fig. 6. is a perspective sketch of a pendant for electric light made according to
my invention.
.
Fig. 7. is a perspective sketch of a bracket for electric light made according to
my invention.
Fig. 8. is a perspective sketch of a standard for electric light made according to
my_invention.
The full lines in Figs. 6, 7, and 8, represent the arms in a certain position, the
dotted lines represent some of the positions in which the arms may be placed.
The same letters of reference indicate the same parts in the several figures of the
drawing.
A is the outer case of swing joint or body in which the arm D moves vertically.
B is. the slot in the body in which the arm D is free to move vertically.
CC are the two side supports forming bearings in which the axis of the central
boss F revolves.
.
D is the movable arm which rises or falls vertically, and remains in any desired
position.
E is a hammer headed plunger moving freely in central boss F, and forced by
spring G against. the internal surface of outer case A.
F is the central boss drilled at one end to receive the plunger E, screwed on the
outside to allow of nut I being adjusted to, compress spring G, and tapped at the
reverse end to receive movable arm D.
G is the spring to force the plunger E against the internal surface of case A.
H is a washer forming a stop for spring G.
I is a nut fitted with set screw to allow of its being set at any position after
spring G is sufficiently compressed.
X is the main rod of pendant or standard or fixing plate of bracket which carries
the body A in which the movable arm D is worked.
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 :-
1. The use of a spring or springs to create friction between a moving and a
fixed part or parts, or between two or more moving parts, for the purpose of
swinging, raising or lowering electric light, gas, oil or candle fittings and the like,
without the use of balance weights or counterweights.
2. The combination of a spring with a moving plunger for the purpose already
described.
3. The improved construction of joints or bodies for pendants, standards, brackets
and the like herein described with reference to the accompanying drawings, whereby
it is possible to create sufficient friction between parts to allow of the moving arms
being placed in any desired position and automatically held therein.
Dated this 16th day of January Eighteen hundred and ninety-seven.
P. G. EBBUTT.