IMPROVEMENTS IN GLOBES AND GLASSES FOR THE TRANSMISSION OF ARTIFICIAL AND OTHER LIGHT
Year: 1867

page_text: PROVISIONAL SPECIFICATION left by Samuel Edward Tyrrell Steane at
the Office of the Commissioners of Patents, with his Petition, on the
30th November 1867.
I, SAMUEL EDWARD TYRRELL STEANE, of Barking, in the County of Essex,
Soap Manufacturer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN GLOBES AND GLASSES FOR THE TRANSMISSION OF ARTIFICIAL AND
OTHER LIGHT," to be as follows:-
According to my improvements in globes and glasses for lamps, candle, gas,
and other lights, I make the globe of a double thickness of glass, presenting a
convex form both on the outside and inside, and having a hollow space between
to contain water or other liquid or fluid for increasing by its refractive and
reflective power the light encircled by said globe. The space between tho
inner and outer surfaces of the globe may either be open at top for the
introduction of the liquid, or an orifice may be made for the purpose when the
edges of the glass are united to form the bi-convex surface; provision is also
made to prevent the liquid freezing in winter when applied for outdoor use, as
for increasing the lighting power of street or signal lamps for example. In
the globe thus formed there is a central space contracted towards the centre
for the reception of the gas, oil, or candle light, which I may place either enclosed
in a chimney or not about the middle or towards the bottom of the globe,
according to the direction in which the rays of light are to be transmitted.

page_text: The glass may also be more or less oval in form, with the bi-convex section as
before. I may also obtain the desired refraction of light by making the
double sides of the globe of plano-convex form in transverse section, while I
provide a circular, oval, square, or other shape central or another opening to re-
ceive the light surrounded with the refracting liquid; or I may make the glass
of a portion of a cylinder and apply the convex surface on the inside, the space
between the inside and ou'side walls being also filled with liquid. I sometimes
make the glass flat on both sides either in sections or otherwise with a space
between for containing liquid. The glasses or globes constructed of the forms
abovo mentioned when used for magnifying artificial light are placed so as to
enclose the same, while for reflecting solar and other natural light they are
disposed as best suited for transmitting the light in any desired direction.
The globes or glasses may be made either of plain or colored glass, or
partly plain or colored, and ornamented or figured in any manner. Water or
other transparent fluid or liquid may be used for producing the desired
refracting power, or I may use the globes and glasses made of the forms
before indicated without the liquid if desired. Or I may fill the hollow
between the walls of the globe or glass with glass cut or moulded in any form
or other transparent or semi-transparent substance with or without the addition
of the liquid. I may also make chimney glasses for magnifying artificial light
to be used either alone or in combination with the globes or glasses above
described of the bi-convex, plano-convex, or other forms as before, and either
of hollow or solid, plain, cut, grooved, or figured glass.
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