Improvements in the Construction of Holders for Incandescent Electric Lamps.
Year: 1888

page_text: Date of Application, 19th Mar., 1888
Complete Left, 17th May, 1888
Complete Accepted, 20th July, 1888
Improvements in the Construction of Holders for Incandescent
Electric Lamps.
I THEOPHILUS COAD of 10 Thorpe Terrace Thorpe Road, Forest Gate in the
County of Essex Electrician do hereby declare the nature of this invention to be as
follows:-
This Invention relates firstly to certain means for holding incandescent electric
lamps in such a position that perfect contact is assured and the liability of the lamp
becoming disconected by accident prevented.
Secondly the Invention relates to an arrangement suitable for turning the
current on or off without the necessity of employing an independent switch.
Thirdly the Invention relates to the application of a reflector in proximity to the
lamp for the purpose of intensifying the light.
The body of the Holder is constructed of wood vulcanite or any suitable material
to which is attached a bent arm for the purpose of holding the lamp, in one end of the
bent arm is formed an aperture, through which aperture the loops of the lamp pass
through which aperture the loops of the lamp pass, and are attached to suitable springs,
one of the springs being insulated, in the opposite end of the bent arm or holder a
slot is preferably" formed for the purpose of adjusting the lamp to the required
height and also for securing perfect contact, the arm is then clamped in position by a
nut and screw or any suitable means.
:
The holder is provided with two terminals one of which is insulated from the lamp,
the other is connected direct to the lamp by means of one of the springs mentioned
above, the circuit is completed between the insulated terminal and the insulated spring
by a screw or lever or other suitable means.
The reflector is formed with an aperture concentric with that in the bent arm or
holder and resting upon it, consequently the lamp is in proximity to the reflector and
the light thereby intensified.

page_text: COMPLETE SPECIFICATION.
Improvements in the Construction of Holders for Incandescent
Electric Lamps. .
I THEOPHILUS COAD, of 10 Thorp Terrace Thorp Road, Forest Gate, in the County
of Essex, Electrician, 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 relates to an improved means for holding incandescent electric lamps
in their holder, so that perfect contact can at any time be assured and the lamp
hooked on or disconnected without the necessity of compressing a spring, or the
liability that now exists with the present form of holders, of frequently breaking the
terminals of the lamp when fitting it in a holder.
The invention will be best understood by reference to the accompanying drawing
which is a perspective elevation.
A, is the body of the holder made of vulcanite or other suitable material, attached
to this is a metal ring B, with the usual terminal connections C; E, is an arm
attached to the holder by means of a slot F, and screw G with nut; the bottom of
the arm is bent at right angle the bent portion being formed as a ring H. On
attaching a lamp the nut of screw G, is loosened and arm pushed up; the terminals
of the lamp are put through the ring H, and hooked on to their connections, when
the arm is pushed down to give the requisite degree of contact, and secured in such
position by the nut of screw G. To release the lamp it is only necessary to loosen
screw G, when the lamp can be readily disconnected.
This manner of holding lamps in their holder offers great facilities for attaching a
reflector, as by making this with a hole for the terminal end of the lamp to come
through, and by putting it on the lamp before passing the end through the ring it
will be held securely by the under side of latter. I, is a switch screw to make or
break circuit.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
The means for holding an incandescent electric lamp in its holder and to facilitate the
connection and disconnection, substantially as hereinbefore described and illustrated
in the accompanying drawing.
Dated this 17th day of May 1888.
FREDERIC PRINCE,
1, Quality Court, Chancery Lane, W.C.,
Agent for Applicant.
3.