Glasses for Making the Reflected Light
Year: 1887

page_text: Glasses for Making the Reflected Light White.
FRANK WALTER HAYWARD, Watch maker, White Lion Street, Norwich, 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 :-
For the better reflection of light from lamps by metallic or silvered glass reflectors.
I make some of my reflectors of a shape similar to a paper shade, commonly used for
table lamps, of silver or any metal, electro plated, or nickled, or of tin plate, and
I corrugate them diagonally.
If a more perfect reflection of light is required, I corrugate them again a second
time, but in an opposite direction, so the corrugations are crossed, the crossed
corrugations formning in the metal a large number of diamond, or square shaped
indentations, each indentation reflects light, and as there are so many indentations,
the light reflected from them perfectly diffused.
When the reflector is flat, or slightly hollowed, the indentations are made by
crossing the corrugations at any convenient angle, or my reflectors can be made by
punching, or pressing the indentations into the metal. When my reflectors are made
of glass, they are indented as when made of metal, but are silvered on one side
similar to a mirror or ordinary looking glass.
I varnish my metalic reflectors to protect them from corrosion, or tarnishing, or
becoming dull from any cause, with a varnish, composed of gelatine dissolved in
water, or gelatine dissolved in water and spirit of wine, or glue dissolved in water,
or water and spirit of wine, in the proportions of about 1 oz. of gelatine, or glue, to
2 pints of water, or water and spirit of wine, the proportion of spirit of wine can be
varied at pleasure.
When the light is desired to be of a whiter description than comes from gas or
oil lamps, I attach a glass, previously tinted blue, to the reflector-the reflector being
tubular in form, open at both ends, but covered at one end by the tinted glass-the
reflector and glass is placed between the light and the object intended to be illuminated.
Fig. 1. A. the tinted glass. B. Reflector. C. Light. The glass is prepared in the

page_text: following manner. I take a piece of clear glass, and splash on to it with a brush, a
pure blue transparent colour, or dye, so as to about half cover the glass, small portions
remaining clear all over the glass, not touched by the colour, this is burnt in or not
as desired.
Light from a lamp passing through a glass prepared in this manner becomes much
whiter, and colours, and tints of colours, can be readily seen by it, so that artists can
paint by night by this light-these glasses can be prepared in other ways, the colours
such as green and blue, or yellow and blue, mauve, or violet, may be put on in
concentric rings, or in lines, or in spots, or the glass may have one uniform blue tint
throughout.
Having now particularly described and ascertained the nature of my invention, and
in what manner the same is to be performed, I declare that what I claim is :
1. The reflecting surfaces, substantially as herein described.
2. The varnish, for protecting reflectors from tarnishing, substantially as herein
described.
3. The use of a coloured glass for making the light from a lamp white, substantially
as herein described.
I l LT 1007