Improvements in Devices for, or applicable to, Incandescent Electric Lamps.
Year: 1897

page_text: Date of Application, 4th Nov., 1897
Complete Specification Left, 4th Aug., 1898-Accepted, 17th Sept., 1898
Improvements in Devices for, or applicable to, Incandescent
Electric Lamps.
I, SIMON BIHELLER, of 70 & 71, Chiswell Street, in the City of London, Glass
Merchant, do hereby declare the nature of this invention to be as follows:-
:-
This invention has for its object improvements in or applicable to incandescent
electric lamps.
In producing coloured light by incandescent lamps difficulty has heretofore
been experienced as it is not practicable to make the lamp itself of suitable
coloured glass whilst colours applied to the finished lamp are neither sufficiently
intense nor durable enough.
According to this invention I enclose the lamp in a coloured hood of glass
celluloid or other transparent material of suitable colour.
The hood may be of such size as to enclose the entire lamp or parts of the
same.
In one form I make the hood of hemispheric shape, say, and of such size as
to enclose the outer part of the lamp. Below, there may be an aperture to allow
Above holes are provided serving
part of the lamp to protrude beyond the hood.
to secure attachments which connect the hood with a ring surrounding the neck
or thinner part of the lamp, or the hood may be flanged for this purpose. Other
convenient means may be adopted for fixing the hood in place."
According to a modification of this invention I make the hood in two or more
parts completely or partly enclosing the lamp, the parts of the hood being united
by rings at top and bottom or simply tied with wire or the like. The hood may
be entirely of one colour or parti-coloured.
I may also make the hood so as to cover one side of the lamp only.
thin 4th of November 1897
Improvements in Devices for, or applicable to, Incandescent
Electric Lamps.
I, SIMON BIHELLER, of 70 & 71, Chiswell Street, in the City of London, Glass
Merchant, do hereby declare the nature of this invention and in what manner the

page_text: same is to be performed, to be particularly described and ascertained in and by
the following statement-
This invention has for its object improvements in or applicable to incandescent
electric lamps.
In producing coloured light by incandescent lamps difficulty has heretofore 5
been experienced as it is not practicable to make the lamp itself of suitable
coloured glass whilst colours applied to the finished lamp are neither sufficiently
intense nor durable enough.
According to this invention I enclose the lamp in a coloured hood of glass,
celluloid, or other transparent material of suitable colour.
The hood may be of such size as to enclose the entire lamp, or parts of the
same.
In one form I make the hood of a hemispheric shape, say, and of such size as
to enclose the outer part of the lamp. Below there may be an aperture to allow
part of the lamp to protrude beyond the hood. Above, hooks are provided serving
to secure attachments which connect the hood with a ring surrounding the neck
or thinner part of the lamp, or the hood may be flanged for this purpose. Other
convenient means may be adopted for fixing the hood in place.
According to a modification of this invention I make the hood in two parts, or
more, completely or partly enclosing the lamp, the parts of the hood being united
by rings at top and hottom or simply tied with wire or the like. The hood may
be entirely of one colour or parti-coloured.
I may also make the hood so as to cover one side of the lamp only.
In the accompanying drawings I have represented several ways in which this
invention can be carried into practice, similar letters of reference indicating the
same parts in all the figures.
Figs. 1, 2, 3, and 4 show elevations of lamps fitted with hoods as herein before
referred to.
Figure 1 is a plan view of Figure 1.
Figures 5 and 5* are elevations of the lamp and hood shown in Figure 2.
Figure 6 shows a lamp fitted according to this invention and provided with a
reflector.
In all the figures A, is the lamp and B is the hood enclosing the same.
In the form shown in Figures 1 and 1^, the hood consists of two halves, b,
and b, united by a hinged collar C, of which c, c, are the hinges and care
springs within the collar. These springs, attached to the inside of the collar at
suitable points, bear against the lamp and prevent shifting of the parts.
In Figures 2, 5, and 5*, I have shown a somewhat different arrangement. The
collar C is not hinged but is an elastic ring the ends whereof are drawn together
by a screw d so as firmly to attach the ring to the lamp. This collar or ring
has arms D, D, bent at d', d, the hood has a groove or channel D', with which the
curved parts d, d. of the arms D, D, can engage. The curved arms are elastic
being preferably made of spring wire. The ring carrying the arms being secured
on the lamp, the hood can be " sprung into place and removed if desired by
forcing back the arms as will be readily understood.
وو
The hood shown in Figure 3 consists of two pieces 62, 63, similarly to that
shown in Figure 1, the two parts are however in this form simply tied together
by wire at the points e, e¹, as shown.
In Figure 4 a further modification is illustrated. The hood B, has a flange f,
turned outward and a top piece F, encloses the upper portion of the lamp. The
collar C, carries spring-arms G, G, which bear on the top piece F, and whose
curved lower edges engage with the flange f, f, the drawings clearly indicate the
construction of this part of my invention as well as the others.
In the lower portion of the hood I make a small hole to accommodate the little
projection usually found on the lamp at that point.
4

page_text: Figure 6 shows a lamp fitted with my hood and provided with a reflector 1,
this figure calls for no further explanation.
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
A hood of coloured glass or other transparent material fitted to or combined
with an incandescent electric lamp substantially as set forth and illustrated in the
accompanying drawings and for the purpose herein above specified.
Dated this 4th day of August 1898.
BERNHARD DUKES,
226, High Holborn, London, W.C., Agent for the Applicant.