Improvements in the Production of Reflectors.
Year: 1893

page_text: Date of Application, 2nd Mar., 1893
Complete Specification Left, 23rd Oct., 1893-Accepted, 25th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Production of Reflectors.
I WILLIAM WINDLE PILKINGTON, of St. Helens in the County of Lancaster
Glass Manufacturer, do hereby declare the nature of this invention to be as
follows:-
•
The object is to produce reflectors, having more or less spherical surfaces,―
with greater facility, and more economically than heretofore.
The invention consists in blowing a sheet-glass cylinder in any usual or ordinary
way, in re-heating the closed end of the cylinder, in raising and rotating the
cylinder with the re-heated closed end uppermost, in such manner that the convex
end is induced to become flattened or concave to the required degree, the concave
end is then separated from the body of the cylinder and is silvered or otherwise
treated to obtain a reflecting surface.
Reflectors produced as above set forth, are framed or backed in any suitable
manner so that they can be readily supported or suspended in any desired position.
Dated the 30th day of December 1892.
TU
Improvements in the Production of Reflectors.
1, WILLIAM WINDLE PILKINGTON of St. Helens in the County of Lancaster
Glass Manufacturer 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 :-
The object is to produce reflectors-having more or less spherical surfaces,--with
greater facility and more economically than heretofore.
The invention consists in blowing a sheet glass cylinder in any usual or ordinary
way, in re-heating the closed end of the cylinder, in raising and rotating the
cylinder with the reheated closed end uppermost in such manner that the convex
end is induced to become flattened or concave to the required degree, the flattened
or concave end is then separated from the body of the cylinder and is silvered or
otherwise treated to obtain a reflecting surface.
Reflectors produced as above set forth are framed or backed in any suitable
manner so that they can be readily supported or suspended in any desired position.
In the accompanying drawings,
Fig. 1 shows in outline the sheet glass cylinder made with a closed convex end in
the usual way, and
Fig. 2 is a transverse section of a mirror complete.
The said cylinder a after being formed as shown is heated at the end and is
rotated with the closed end upwards until the end assumes the form shown by the
dotted line b, the end of the cylinder is then cut off as shown by the dotted line c,
after which the separated portion is silvered on the inside or otherwise treated so
as to obtain a reflecting surface. The mirror so made is cemented or secured in or
to a case or hacking d.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
First. Producing reflectors by blowing a sheet glass cylinder with a closed
convex end, reheating the closed end, rotating the cylinder with the reheated end
uppermost, and cutting off the end of the cylinder.
Second. Producing reflectors by blowing a sheet-glass cylinder with a closed
'convex end, reheating the closed end, rotating the cylinder with the reheated end
uppermost and cutting off the end of the cylinder, and coating the surface of the
cut off end substantially as and for the purpose set forth..
Third. Producing reflectors by blowing a sheet glass cylinder with a closed
convex-end, reheating the closed end, rotating the cylinder with the reheated end
uppermost and cutting off the end of the cylinder, coating the surface of the cut
off end and securing the reflector so made to a suitable backing.
Dated th
Per
pro
J. T. KING,
J. Johnson,
Agent.
Per pro J. T. KING,
J. Johnson,
Agent.