Improvements in Shade and Lamp Holders for Incandescent Electric Lamps.
Year: 1898

page_text: Date of Application, 10th Sept., 1898
Complete Specification Left, 9th June, 1899-Accepted, 26th Aug., 1899
PROVISIONAL SPECIFICATION.
Improvements in Shade and Lamp Holders for Incandescent
Electric Lamps.
We, SIDNEY HERBERT SMITH, Electrician, and JOHN HOWARD SMITH, Art Metal
Worker, both of 43, Thomas Street, Smethwick, do hereby declare the nature of our
said invention to be as follows:-
Our invention relates to improvements in shade and lamp holders for incandescent
electric lamps and consists substantially in the construction of the said holder the
chief features of our invention are simplicity and efficiency 1st by dispensing with the
costly process of screwing the parts together and 2nd by the employment of a spiral
spring for holding the shade in position in place of screwing as hitherto.
We will describe our invention thus:-
We make the body proper or liner of tube cut to a required length and of a required
diameter by the employment of special tools we reduce each end of this tube thus
forming a central collar, the lower end is provided with the usual "bayonet slots" for
engaging with two studs projecting from the tubular section which carries the lamp
the upper end is also provided with bayonet slots which engage with two studs in the
cover or top which receives the usual cord grip when employed.
Upon the body or liner is arranged a spiral spring finding its bearing upon the
extended edge of the central collar and is covered by an outer collar (which may be
termed the shade carrier ring) this collar is held in position with the central collar by
having its edges turned or rolled inward sufficient freedom being allowed for the action
of the spring thus: when the top or cover is removed the shade can be arranged
upon the outer collar or carrier ring and held in position against the resistance of the
spring by the top or cover bearing thereon, thus taking shades of varying thickness.
The upper part of the body or liner interiorally is provided with two projections which
engage with two recesses in the insulator block which contain the contact plungers
and their attachments when the insulator block is in its position it is prevented from
rising by the two studs in the top or cover.
Dated 10th September 1908
Improvements in Shade and Lamp Holders for Incandescent
Electric Lamps.
We, SIDNEY HERBERT SMITH, Electrician, and. JOHN HOWARD SMITH, Art Metal
Vorker, both of 43, Thomas Street, Smethwick, do hereby declare the nature of this
[Price 8d.1

page_text: invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
Our invention relates to improvements in shade and lamp holders for incandescent
electric lamps and consists substantially in the construction of the said holder the
chief features of our invention are simplicity and efficiency-1st by dispensing with
the costly process of screwing the parts together 2nd by the employment of a spiral
spring for holding the shade in position in place of screwing as hitherto;
And in order that this our said invention may be more clearly understood, we will
now proceed to describe the same with the aid of the accompanying sheet of drawings,
similar letters of reference denote similar parts in each figure in which they 1
occur.
Figure 1 is a view in elevation of a shade and lamp holder for incandescent electric
lamps, and constructed according to our invention.
Figure 2 is a view of the upper part or top of Figure 1 detached.
Figure 3 is a underplan view of same.
Figure 4 is a view of the body or liner detached from Figure 1.
Figure 5 is a view of the outer collar detached from Figure 4.
Figure 6 is a view of the spiral spring removed from Figure 5.
Figure 7 is a view, sectional of Figure 1.
Figure 8, is a view in elevation as Figure 1 in its entirety, and carrying the shade :
and lamp, supported by the cord and grip.
Figure 9 is a view in elevation of a shade and lamp holder complete, but as a
modification of Figure 1.
Figures 10, 11, 12 are parts of Figure 9 detached.
Figure 13, is a view sectional of Figure 9.
1
A is the tubular body or liner reduced at a¹ a¹, thus forming the central collar b the
lower end of a being provided with bayonet slots c for engaging the studs d projecting
from the tubular section e of the lamp f. 9 is the top or cover provided with the
studs h, to engage in the bayonet slots i in the top of a. j is a spiral spring arranged
around the body a, and finds its bearing upon the central collar b this spring is 3
covered by an outer collar k which carries the shade l, the outer collar k is held in
position with the central collar 6 by having its edges m, m, turned or rolled inwards,
sufficient freedom being allowed for the action of the spring; which holds the shade l
up and against the top g.
The upper part of the body a is provided with two projections h h for engaging in
two recesses in the insulator block (not shewn) which contain the contact plungers
and their attachments, the insulator block is prevented from rising by the studs h in
the top g.
o is the cord with its grip o¹ for supporting the lamp.
In the modification of our invention Figures 9 to 13 we make the central collar b
and the outer collar with the spiral spring ; detachable, which is effected by the 4
collar b being loose upon the body a, and attached loosely but inseparable to the outer
collar by turning or rolling over the edges m m after the spring ; has been inserted,
the outer collar k is held in its fixed position by the bayonet slots p engaging upon
the studs q upon the body a.
To practically illustrate the object of our invention 1st as Figures 1 to 8-When
the body a is removed from the top g by freeing or releasing the slots i from the
studs h, the spring j is free, the shade can now be arranged upon the outer collar k,
and when the said body is refixed the shade is held by the resistance of the
spring up and against the top g, the lamp f is now arranged in the body a as
hitherto. 2nd as Figures 9 to 13 by removing the lampf the collars and b with 5
the spring can be removed, by releasing the bayonet slots p from the studs the
shade can now be arranged upon the body a, and when the collars and b are
replaced the shade is held by the resistance of the spring j up and against the top g,
the lamp is now arranged in the body a as hitherto, in this case the insulator block
is not exposed, in the removal of the shade.
5
While we have described the above and shewn upon the drawings the features of

page_text: our invention, we would observe in conclusion that we do not limit ourselves to form
or details, as we may make desirable changes without departing from the principle of
our said invention.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed we declare that what
we claim is :-
In "Improvements in shade and lamp holders for incandescent electric lamps."
1st. The combination, the body or liner a formed with the central collar b, the
bayonet slots c, and i, for engaging the studs d and h, the spiral spring j, with outer
collar k. The top or cover g provided with the studs h substantially as and for the
purposes herein before described and illustrated by Figures 1 to 8.
2nd. The combination, the body or liner a with bayonet slots c, and i for
engaging the studs d and h, the detachable collars band with spiral spring j,
k being provided with bayonet slots p for engaging the studs q. The top or cover
having studs h. Substantially as and for the purposes herein before described and
illustrated by Figures 9 to 13.
3rd. The general construction, combination, and arrangement of parts, substantially
as herein before described in the foregoing specification and illustrated on the
accompanying sheet of drawings.
1000
THOMAS KENDRICK,
39, Temple Row, Birmingham, Agent for Applicants.