Year: 1887

page_text: Date of Application, 4th Apr., 1887
Complete Left, 4th Jan., 1888
Complete Accepted, 10th Feb., 1888
I, FREDERICK THOMAS SCHMIDT of Hustlergate, Bradford in the County of York,
Electrician, do hereby declare the nature of this invention to be as follows:-
The object of my invention is to construct a holder suitable for electric lamps in
which are combined a switch and fuse, and to so arrange the same, that the light can
be switched on or off when several lights are supplied by one cable.
1 accomplish my object by introducing into an electric light lamp holder, a sliding
switch, which is connected with a lever or arm mounted on a screw stud as fulcrum.
The switch extends to the exterior of the holder, and when operated in one direction
closes the circuit, and in the other breaks the same, thus extinguishing the light the
before mentioned lever or arm being held in the position to which it is moved by the
sliding switch by a spring in the electric circuit with one of the terminals.
:
The connection between one terminal and the before mentioned lever or arm and
spring may be effected by a lead or other well known fusible material, so that when a
series of lamps are supplied by one cable, should a number be extinguished so that
the electric circuit is too strong for the remainder, the lead or other connection or
connections will be melted and thus extinguish the light or lights without further
damage.
By this arrangement of lamp holder the sliding switch, lever or arm, fuse and
terminals are all mounted on the holder and enclosed by a cap, thus obviating the
usual connections and switches attached to walls for controlling a single or number
of lamps.

page_text: An Improved Holder and Switch for Electric Lamps.
I, FREDERICK THOMAS SCHMIDT, of Hustlergate, Bradford, in the County of York,
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 :-
The object of this invention is to construct holders suitable for electric lamps in
which are combined a switch and fuse; and to so arrange the same that, the light in
any lamp can be switched off when several lights are supplied by one cable; and
consists in introducing into an electric lamp holder, a sliding switch which is
connected with a lover or arm mounted on a screw as fulcrum; and with the operating
portion of the switch extending to the exterior of the holder.
The connection between one terminal and the before mentioned lever or arm may
be effected by lead or any other well known fusible material so that, should several of
the lamps supplied by one cable be extinguished, thereby leaving the electric current
too strong for the remainder, the fusible connection will melt, and thus extinguish
the light without further damage.
In order that my invention may be better understood, I will further describe the
same by aid of the accompanying sheet of drawings, in which Fig. 1, represents a plan
view of my improved holder having the cap removed. Fig. 2 is a side view showing
the cap in section, and Fig. 3 a detail of the sliding bar.
The block of the lamp holder is indicated by the letter A, and in the said block I
form a groove or recess into which is introduced a sliding bar B, having a recess formed
therein at B₁ for the purpose of receiving a lever or arm C, mounted on a screw or
stud C¹, so that, on the operation of the sliding bar B, the lever or arm C is moved in
or out of contact with the plate D of the terminal connection E; the lever or arm C
being held in the position to which it is moved, by the spring F pressing on a curved
projection or raised path F¹, formed on or attached to the upper surface of the before
named lever or arm C.
pass,
By Fig. 1. the switch is shown out of circuit, but on moving the sliding bar B, in
the direction of the arrow, the circuit is complete, allowing the electric current to
say for illustration, from terminal E, through the plate D, lever or arm C, curved
projection or raised path F1, spring F, and through the fusible connection G, to the
plate H, to which is connected one of the ordinary spiral twisted wires K, the current
passing through the same and lamp, up the other spiral twisted wire to terminal E¹
connected to say the negative cable; the terminal E being connected to the positive.
By constructing the lamp holder in the manner described, the usual connections
and switches connected to walls for controlling a single or a number of lamps are
obviated, and any number of lamps supplied by the same cable may be switched off
without fear of damage to the remainder of lamps supplied from the same source; so

page_text: that, should a number of lamps be extinguished that the electric current is too strong
for the remainder, the fuse G in the respective lamps will be melted, and thus
extinguish the light or lights without further damage.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that-what
I claim is:
:―
An electric lampholder in which is combined a movable switch with a fusible
connection, arranged substantially in the manner as shown and for the purpose herein-
before described.
JOHN WAUGH,
Agent.