Improvements in Holders for Incandescent Electric Lamps.
Year: 1889

page_text: Date of Application, 24th Apr., 1889
Complete Specification Left, 23rd Jan., 1890-Accepted, 24th Apr., 1890
Improvements in Holders for Incandescent Electric Lamps.
We, CHARLES RICHARDSON of 74 Barrett Street, Brooks' Bar, in the County of
Lancashire, Electrician, and GEORGE HILL of Crown Point Old Trafford, in the County
of Lancashire, Electrician do hereby declare the nature of this invention to be as
follows:-
This Invention relates to holders for incandescent electric lamps, and has for
its object the connecting of wires to the lamp which it holds in a safe and perfect
manner.
We place our binding screws or terminals on two opposite sides of a casting of
pot or piece of insulating material, such as, wood, slate, vulcanized fibre, bone,
vulcanite, shaped in the nature of a cylinder with two deep flats on either side,
or further to be described as shaped in the nature of two washers joined by a
stout webb.
On each side of the webb or upon the two flats and fast to the upper part of
the bottom washer preferably by means of a screw from underneath, is a small
stamping or casting of brass or other metal, when capped lamps are used this
stamping or casting is made to form a bearing for a pin moving vertically with
a coiled spring round it, which makes the actual contact with the lamp. When
uncapped lamps are used simply the spring is necessary hooked at the end to catch in
connection of lamp.
This said stamping or casting has a lug bent up or cast at right angles to it,
the said lug fitting flat against the webb, and it is into this lug we fasten our binding
screw or terminal in a horizontal direction.
It must be clearly understood that this stamping or casting with connection pin or
spring or lug at right angles, and binding screw, is in duplicate that is to say one set
at each side of the webb.
The top washer is tapered away at its top into a nozzle through which is a hole for
the leads to enter the holder. This top washer is the same diameter as the bottom
washer, and with it serves as a bearing for a tubular cover.
This arrangement of casting or piece of insulating material specially shaped as
described with its small casting or stamping with vertical contact pin or spring and
horizontal binding screw or terminal forms the simplest application of our invention
to an incandescent lamp holder.
Dated this Seventeenth day of April 1889.
CHARLES RICHARDSON.
GEORGE HILL.
COMPLETE SPECIFICATION.
Improvements in Holders for Incandescent Electric Lamps.
We CHARLES RICHARDSON of 74 Barrett Street Brook's Bar Manchester in the
county of Lancashire, electrician and GEORGE HILL of Crown Point Old Trafford in
the county of Lancashire 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 improvements which form the subject of this invention relate to an improved
form of piece of insulating material, such as pot ware, slate, fibre, wood or other
insulating medium shaped in the nature of a cylinder with two deep flats, one on
each side, or further to be described as shaped in the nature of two washers joined by
a stout webb.

page_text: In order to more clearly describe the nature of our invention we have annexed
hereunto 2 sheets of drawings.
In the several views illustrated therein similar letters refer to similar parts.
Sheet Figure 1. is a front elevation Figure 2 is a side elevation & Figure 3 is a
sectional plan through the line A B of figure 1.
Sheet 2 Figure 1. is a sectional side view. Figure 2 is a sectional front view.
Figure 3 is a sectional plan.
In constructing the incandescent lamp holder according to this invention we use
the insulating piece shewn on sheet 1 in position a on sheet 2, forming the body of
the lamp holder. We then attach to a the contact pieces by the small screws d.
We attach to the contact pieces b the screws e wherewith to connect the wires con-
veying the electric current.
On the lower extremities of we also attach the contact spings c.
This complete body we then insert in the tube f and secure it by screwing
the cap g upon it; which in its turn secures the round nozzle h by which the complete
holder can be attached to a suitable fitting.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
In an electric incandescent lamp holder or other like fitting the use of a piece
of insulating material of the form of a cylinder with two deep flats one on each
side or further to be described as shaped in the nature of two washers joined
together by a stout webb, substantially as herein before shewn and described.
Dated this 21st day of January 1890.
CHARLES RICHARDSON.
GEO. HILL.