Year: 1896

page_text: Date of Application, 23rd June, 1895
An
1007
Date of Application, 23rd June, 1895
Complete Specification Left, 19th Mar., 1857 Accepted, 24th Apr., 1907
We, CAREL MARIE VICTOR ROOTHAAN, JOSEPH PHILIPPUS ROOTHAAN,
CORNELIS ALEWIJNSE, and HENDRIKUS SCHUURMAN, constituting the Firm
of Roothaan Alewijnse and Co.,, Manufacturers, of Nimeguen, in the Kingdom of
Holland, do hereby declare the nature of this invention to be as follows:-
Our invention relates to incandescent electric lamps and has for its object to
construct an improved combined lamp aud reflector which shall be efficient and at
the same time simple and easy of manufacture.
According to our invention we provide a truncated conical reflector of any
suitable metal and of dimensions adapted to cover approximately the upper half of
the bulb of the incandescent lamp. The orifice at the small end of the reflector is
made of such a diameter that it can slide over and fit the metallic collar which
forms the outside of the cap of the lamp and when in place thereon with the cone
surrounding the upper part of the lamp bulb it is secured in position by soldering
or other similar means. When the lamp is worn out the reflector can be easily
removed and applied to another lamp in a similar fashion.
With
Our improved combined lamp and reflector may be constructed with any
ordinary form of lamp with either bayonet caps, screw caps or other suitable
mounting provided that such mounting has a suitable metallic outer part to which
the edge of the reflector can be secured. We prefer however to use a lamp the
upper part of which is conical so as to fit snugly inside the reflector.
bayonet capped lamps tongues or slits are cut in the small end of the reflector so
that the same can be slipped over the pins projecting from the side of the cap.
The reflector is preferably silvered and polished inside and may be ornamented or
otherwise treated in any desired manuer.
Dated this 22nd day of Two 1806
W. P. THOMPSON & Co.,
322 High Holborn, W.C., Patent Agents for the Applicants.
We, CAREL MARIE VICTOR ROOTHAAN, JOSEPH PHILIPPUS ROOTHAAN,
CORNELIS ALEWIJNSE, and HENDRIKUS SCHUURMAN, all Manufacturers, of
Nimeguen, in the Kingdom of Holland, do hereby declare the nature of this inven-
tion 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 incandescent electric lamps, and has for its object to
construct an improved combined lamp and reflector which shall be efficient and at
the same time simple and easy of manufacture.

page_text: In order that our invention may be readily understol we will proceel to
describe the same with reference to the accompanying drawing which is an elevation
of our improved combined lamp and reflector, the lamp being of the description
known as "a bayonet" capped lamp.
A is the lamp bulb which is provided with the ordinary bayonet cap B having
pins B at the side, and C is a truncated conical reflector which may be made of
any suitable metal or other suitable material and covers approximately the upper
half of the lamp bulb. The orifice at the small end of the reflector slides over and
fits the metallic collar which forms the outside of the cap B, and the reflector is
secured to said cap by soldering or other similar means. To permit of the reflector
passing over the pins Bcuts are made in the reflector so that the tongues shewn
at C can be bent out and slots formed through which the pins B' can pass.
When the reflector is in position said tongues can be pressed back and soldered as
shewn.
Our improved combined lamp and reflector may be constructed with other forms
of incandescent lamp than the bayonet capped lamp shewn in the drawing provided
that the mounting for the lamp has a suitable metallic outer part to which the
edge of the reflector can be secured. We prefer to use a lamp the upper part of
the bulb of which is conical so as to fit snugly inside the reflector. The reflector
is preferably silvered and polished inside and may be ornamented or otherwise
treated in any desired manner, and when the lamp is worn out the reflector can be
easily removed and applied to another lamp in a similar fashion.
Having now particularly described and ascertained the nature of our said inven-
tiou and in what manner the same is to be performed we declare that what we
claim is :-
The combination of an electric lamp and a truncated conical reflector the small
end of which is adapted to slide over the lamp cap, being soldered to the metallic
part of such cap, substantially as described.
W. P. THOMPSON & Co.,
Of London, Liverpool, Manchester, and Birmingham,
Patent Agents for the Applicants.