IMPROVEMENTS IN STEREOSCOPES AND STEREOSCOPIC APPARATUS
Year: 1858

page_text: LETTERS PATENT to Paul Emile Chappuis, Patentee and Manufacturer
of Daylight Reflectors and Stereoscopes, 69, Fleet Street, London, E.C.,
for the Invention of "IMPROVEMENTS IN STEREOSCOPES AND STEREOSCOPIC
APPARATUS."
Sealed the 15th February 1859, and dated the 16th August 1858. !
PROVISIONAL SPECIFICATION left by the said Paul Emile Chappuis
at the Office of the Commissioners of Patents, with bis Petition, on the
16th August 1858.
I, PAUL EMILE CHAPPUIS, Patentee and Manufacturer of Daylight
Reflectors and Stereoscopes, 69, Fleet Street, London, E.C., do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN STEREOSCOPES
AND STEREOSCOPIC APPARATUS," to be as follows:-
The ordinary stereoscopes are too large and cumbersome for the convenient
use of persons travelling about, and the first part of my Invention consists
of making a folding stereoscope in the form of a book, as shown by the
Drawing.
Fig. 1 shows the stereoscope folded and ready for the pocket; Fig. 2 shows
it open and ready for use; it is very flat, light, and portable. The lenses and
divider fold inwards, and the framework at a is jointed so as to permit the
focus to be lengthened or shortened.
Another form of portable stereoscope consists of an oblong box resembling

page_text: a colour box with a sliding lid, the lenses are folded in the box; when the lid
is removed, it is turned up and slid into the grooves at the side of the box, and
the divider is raised. The focus may be adjusted by shifting the lid on which
the picture rests.
My improvements in stereoscopic apparatus consist of a box or case for
presenting the slides to the stereoscope for exhibition; an endless band of
leather or other suitable material is caused to revolve by a thumbscrew or
other arrangement, to this band are glued or gummed a number of slips of
Tunbridge ware or other wood, or suitable material between which the slides
or pictures are retained. When the slides have been presented to the glasses
of the stereoscope they fall into a bag or suitable receptacle, and are replaced
in the grooves or slips; this apparatus may be used with any ordinary
stereoscope or with the folding sort above described.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Paul Emile Chappuis in the Great Seal Patent Office on
the 16th February 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, PAUL
EMILE CHAPPUIS, Patentoc and Manufacturer of Daylight Reflectors and
Stereoscopes, 69, Fleet Street, London, E.C., send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Sixteenth day of August, in the year of our Lord
One thousand eight hundred and fifty-eight, in the twenty-second year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Paul Emile Chappuis, Her special licence that I, the said Paul
Emile Chappuis, my executors, administrators, and assigns, or such others
as I, the said Paul Emile Chappuis, 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 Inven-
tion for "IMPROVEMENTS IN STEREOSCOPES AND STEREOSCOPIC APPARATUS," upon
the condition (amongst others) that I, the said Paul Emile Chappuis, my
exccutors or administrators, by an instrument in writing under my or
their, or one of their hands and seals, should particularly 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

page_text: Patent Office within six calendar monthis next and immediately after the
date of the said Letters Patent.
NOW KNOW YE, that I; the said Paul Emile Chappuis, do hereby
declare the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement :-
The ordinary stereoscopes are too large and cumbersome for the convenient
use of persons travelling about, and the first part of my Invention consists of
making a folding stereoscope in the form of a book, as shewn by the Drawing
annexed hereto.
Fig. 1 shews the stereoscope folded and ready for the pocket; Fig. 2 shews
it open and ready for use; it is very light, flat, and portable. The lenses and
divider or partition fold inwards, and the framework at F is jointed, to permit
the focus to be lengthened or shortened. I prefer making the frames of
mahogany, rosewood, or walnut, or other fancy wood or morocco leather, but
any other suitable material may be used. A, A, Fig. 2, are the lenses; B is
the partition or divider, usually made of metal; C is a slit in the lense frame
for retaining the partition; E is a groove for receiving the picture; F is a
sliding jointed piece for lengthening the focus;. G is a spring for opening the
stereoscope; H is a double hinge; the Drawings are full size. To open the
storeoscope it is simply necessary to press the thumb on the spring G, expand
the sides and raise the lenses A, A, to a vertical position. The partition B is
then raised towards the light until the top corner comes in contact with and
fits into a slit in the upper part of the lense frame C, the centre of the picture
is then placed exactly on the mark indicated on the groove E. The sliding
part F may be gently drawn out if a longer focus is desirable. In closing tho
instrument the partition B should be drawn out of the slit, turned towards
the right and placed flat against the hinge of the lense frame.
I am aware that folding stereoscopes have been made heretofore, and I make
no claim to the parts taken separately, but I claim as the first part of my
Invention the construction and arrangement of stereoscopes to fold in the shapo
and form of a book.
Another form of portable folding stereoscopes consists of an oblong box
resembling a color box with a sliding lid. When the lid is removed it is turned
over and slid into grooves made in the sides of the box, and the divider which
is laid flat is raised up; the focus may be adjusted by shifting the lid on which
the picture rests.
I claim as the second part of my Invention making a stereoscope in the
form of an oblong box with a sliding lid or cover.

page_text: My improvements in stereoscopic apparatus consist of a box or case for
presenting the slides or pictures for exhibition through the lenses; an endless
band of leather or other suitable material stretched over rollers is caused to
revolve by a thumbscrew or other suitable means; to this band are glued or
gummed a number of slips or strips of Tunbridge ware or other wood or
material, between which the slides or pictures are retained. When the slides
have been presented to the glasses they fall into a bag or other suitable
receptacle, and are to be replaced in the slips. This apparatus may be used
with any ordinary stereoscope, or with the folding sort herein-before described.
I do not claim the use of an endless band, but only the retaining of the slides
or pictures in slips or strips of wood thereon.
In witness whereof, I, the said Paul Emile Chappuis, have hereunto
set my hand and seal, the Sixteenth day of February, One thousand
eight hundred and fifty-nine.
Witness,
PAUL EMILE CHAPPUIS. (L.S.)
CHARLES BARLOW, Patent Agent,
89, Chancery Lane, London.