IMPROVE- MENTS IN APPARATUS TO BE APPLIED TO LAMPS."
Year: 1863

page_text: LETTERS PATENT to Walter Thomas Whitmore Jones, of No. 22, Holles
Street, in the County of Middlesex, for the Invention of "IMPROVE-
MENTS IN APPARATUS TO BE APPLIED TO LAMPS."
PROVISIONAL SPECIFICATION left by the said Walter Thomas Whitmore
Jones at the Office of the Commissioners of Patents, with his Petition,
on the 12th December 1863.
I, WALTER THOMAS WHITMORE JONES, of No. 22, Holles Street, in the
County of Middlesex, do hereby declare the nature of the Invention for
"IMPROVEMENTS IN APPARATUS TO BE APPLIED TO LAMPS," to be as follows:-
This Invention has for its object improvements in apparatus to be applied
to lamps. For these purposes, in order to screen or shut off the focussed light
of a lamp where a glass globe is used small screens are applied, or a screen
is applied made of some comparatively opaque or semi-transparent material,
or it or they may be made of stained or ground glass. This screen or these
screens are suspended by silk or other flexible thread or material, which will,
when connected by its upper end either to the upper part of the globe or to a
thread of wire, silk, or other material passed round the globe, rest on the
surface of the globe or near it. This screen or these screens are adjusted to
that point of the globe of the lamp which corresponds with the point or points
where the light within the globe is focussed to the eyes of a person or persons
sitting at a table or near where the lamp may be situated.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Walter Thomas Whitmore Jones in the Great Seal Patent
Office on the 11th June 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WALTER
THOMAS WHITMORE JONES, of No. 22, Holles Street, in the County of
Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Iler Letters
Patent, bearing date the Twelfth day of December, in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-seventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Walter Thomas Whitmore Jones, Her special licence that I, the said
Walter Thomas Whitmore Jones, my executors, administrators, and assigns,
or such others as I, the said Walter Thomas Whitmore Jones, my executors,
administrators, and assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, exercise, and vend, within
the United Kingdom of Great Britain and Ireland, the Channel Islands, and
Isle of Man, an Invention for "IMPROVEMENTS IN APPARATUS TO BE APPLIED
TO LAMPS," upon the condition (amongst others) that I, the said Walter
Thomas Whitmore Jones, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should parti-
cularly describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed in the
Great Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I. the said Walter Thomas Whitmore Jones, do
hereby declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and
by the following statement thereof, that is to say:-
This Invention has for its object improvements in apparatus to shade parts
of the light of lamps where glass globes are used. It will be found that the
new focus shade, whilst it hardly makes any perceptible difference in the
light of a lamp which is diffused through a room, takes off all the injurious
effect which the use of a lamp having a glass shade has on the eye. It is
the concentrated or focussed light only which is really injurious. The rest of
the light which passes through a globe is healthy light.
This newly invented or focus shade is a small medallion or other shaped
disc, which is attached to the globe or chimney of a lamp in, such a manner

page_text: that it can be adjusted to that spot where the focussed light strikes the eye of
a person sitting near the lamp. A small shade of the thinnest and slightest
opaque material will serve the purpose. The medallion or medallions can be
fixed either to the rim of the globe through which the chimney passes. as
shown in Figure 1, or to holes perforated through the globe, as in Figure 2,
or otherwise they may be attached to a fine thread or wire passed round the
globe, as in Figure 3. In order to shade the light from persons reclining
below the light the medallion can be suspended by two pieces of thread
or flexible material, as in Figure 4, or by a bent wire suspended from the
rim of the globe, as in Figure 5. Various means may also be used by which
these medallion shades can be raised or lowered and adjusted so as to screen
off the exact focussed light, the position of which will be varied, depending
on the position of the person in relation to the lamp. The simplest plan is a
running noose, shown in the diagrams, but the adjustment when necessary
may be arrived at by other means. The focus shade is suitable for any sort
of glass globes of lamps, whether used to moderator, Indian, or paraffin lamps,
or to gas or light of any kind. The focus shade will be found exceedingly
useful for dinner, or card, or other parties sitting at tables when the eyes of
each person have to sustain a long time the focussed light of the lamps. The
focus shades may be made plain, or they may have printed or other ornamental
devices thereon, such as portraits, landscapes, and others, depending on the taste
of the parties preparing or using them. These focus shades may be made of
white or colored paper, or of white or colored woven silk or other fibrous
material, or, in fact, of any thin, light, and, by preference, semi-transparent or
partially opaque material, and when the material employed is weak and
requires it, the screens may be surrounded with a light metallic or other
frame.
In witness whereof, I, the said Walter Thomas Whitmore Jones, have
hereunto set my hand and seal, this Eleventh day of June, in the
year of our Lord One thousand eight hundred and sixty-four.
WALTER T. WHITMORE JONES. (L.S.)