Improvements in Holders for Incandescent Electric Lamps.
Year: 1897

page_text: Camalada Conc
Date of Application, 4th Dec., 1897
ALL
1000
CJL AL.
4000
PROVISIONAL SPECIFICATION.
Improvements in Holders for Incandescent Electric Lamps.
I, JAMES BOOTH, of Cheapside Works, Birmingham, Manufacturer, do hereby
declare the nature of my said invention to be as follows:-
My invention has reference to lamp holders of the kind known as "Ediswan
holders" and consists in making the holder out of one piece of metal cylindrical
in cross section except for the cord grip which is screwed on to the end remote
from the lamp as usual.
In the most usual way in which I make the lamp holder it is made in two
pieces that is to say I make the body separate from the cord grip and in one
piece by the process of stamping or raising by dies or tools specially provided,
before the final screwing and dressing is effected.
In the body of the lamp holder I form two projections to fit in corresponding
grooves in the block of the insulator which contains the contact plungers and
their attachments and thus prevents its rotation.
THOS.
KENDRICK,
50, Cherry Street, Birmingham, Agent.
improvements in folders for incandescent Electric Lamps,
I, JAMES BOOTH, of Cheapside Works, Birmingham, Manufacturer, do hereby
declare the nature of my said 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 has reference to lamp holders of the kind known as "Ediswan"
holders and consists in making the holder in one piece of metal cylindrical in
cross section except for the cord grip which is screwed on to the end remote from
the lamp as usual.
In the most usual way in which I make the lamp holder it is made in two
pieces that is to say I make the body separate from the cord grip and in one
piece, by the process of stamping or raising by dies or tools specially provided,
before the final screwing and dressing is effected.
In the body of the lamp holder I form two projections to fit in corresponding
grooves in the block of the insulator which contain the contact plungers and their
attachments and thus prevent its rotation.
And in order that this my said invention may be particularly described and

page_text: ascertained reference is hereby made to the accompanying drawings in which
similar letters of reference indicate corresponding parts in each figure where
they occur.
Figure 1 is a view in elevation of the body of a lamp holder with cord grip
removed, and constructed according to my invention.
Figure 2 is a sectional view of same.
Figure 3 is a view as Figure 1 with cord grip attached.
Figure 4 is a plan view of Figure 3 taken on the line A, B, shewing the
insulator block and its attachments in position.
a is the body of the lamp provided with the screwed top 6 for receiving the
cord grip c. d d are
two projections in the body a, for engaging in the
grooves e e in the insulator block f.
I would observe in conclusion that I do not limit myself to the exact form or
configuration of parts shewn on the drawings a I may vary or modify the
same without departing from the principle of my said invention.
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:-
In improvements in holders for incandescent electric lamps.
The construction of the body a provided with the screw top b, and pro-
jections dd from one piece of metal substantially as and for the purposes herein
before described and illustrated by the drawings.
בד
200
71
000
Dated 6321
September 1000.
THOS. KENDRICK,
50, Cherry Street, Birmingham, Agent.