An Improved Reflector for Electric Arc Lamps.
Year: 1895

page_text: Date of Application, 4th Nov., 1895
Complete Specification Left, 4th Aug., 1896-Accepted, 5th Sept., 1896
PROVISIONAL SPECIFICATION.
An Improved Reflector for Electric Arc Lamps.
I, VINCENT FABRIS of 171 Drummond Street St. Pancras London N.W. in
the County of Middlesex, Electrician, do hereby declare the nature of this
invention to be as follows:-
My object is to provide a reflector for electric arc lamps which shall give more
satisfactory results than any other now in use.
In order to attain this object I make use of a composition which consists of two
parts of marble dust (subjected to a sufficiently high temperature to extract the
nitric and other acids before mixing) one part of magnesia and one part of
alabaster or other plaster which forms a light and solid combination. This forms
the reflector proper.
The reflector is placed in a case of metal or other suitable material and can be
fixed to the lamp by means of adjustable screws or otherwise in any suitable
manner according to the style of lamp used and so that when in use the reflector
may always retain its proper position in relation to the points of the carbons.
The reflector may be constructed to throw the light horizontally or upwards or
downwards as desired the shape of the reflector differing in accordance with the
requirements of the case.
Dated Fourth day of November 1895.
A. H. REED,
Agent for Applicant.
1, VINCENT FABRIS of 171 Drummond Street, St. Pancras London N.W. in
the County of Middlesex, 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 :-
My object is to provide a reflector for electric arc lamps which shall give more
satisfactory results than any other now in use.
In order to attain this object I employ a reflector composed of certain materials
as hereafter specified and I place this reflector in a case of suitable form and
material provided with a collar and arms or other suitable connection for fixing
or securing same to the pillars or other convenient part of the arc lamp.
The accompanying drawings show the shape & method of fixing which I have
found most convenient for throwing the light in a downward and also in a
horizontal direction, a slight modification being necessary when it is to be thrown
in another direction.
Similar letters represent similar parts in the different views.
Figure 1 is a half elevation and half section arranged for throwing the light in
a vertical direction and Figure 2 is a plan of same.
Figures 3 and 4 show the apparatus arranged for throwing the light horizontally.
Porn Rd7

page_text: The reflector proper is represented by the letter A and consists of two parts
marble dust (subjected to a sufficiently high temperature to exhaust the nitric and
other acids before mixing) one part of magnesia and one of alabaster or other
plaster which forms a light and solid combination. The case in which I place the
reflector is marked B and is constructed of metal or other suitable material, while
I employ a detachable rim C for keeping the reflector A in the case B and I fix
it by means of a pin H working in a slide I.
In order to secure the case of the reflector to the lamp I make use of a collar
or bracket D which slides on B and is similarly secured as the rim C by means of
a pin K working in a slide L, it is provided with arms as shown having at their
ends circular clips E to suit the pillars of the lamp to which they are fixed by the
screws F. The holes through which the carbon points pass are indicated by the
letter G:
I do not confine myself to the exact form of reflector shown, as it may be varied
both to suit the style of lamp and also to suit the direction in which the light is to
be thrown.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is
1st. The reflector proper composed of the materials as specified.
2nd. The case provided with a collar and arms for fixing substantially as
described and shown.
3rd. The combination of the reflector and case substantially as and for the
purposes described.
Dated this First day of August 1896.
A. H. REED,
Agent for Applicant.