Improvements in Stereoscopes.
Year: 1895

page_text: Date of Application, 18th Apr., 1895
Complete Specification Left, 18th Jan., 1896-Accepted, 18th Apr., 1896
Improvements in Stereoscopes.
I ANDREW HAMILTON BAIRD, Scientific Instrument Maker, Nos. 37 and
39 Lothian Street Edinburgh, do hereby declare the nature of this invention to be-
as follows:-
The distance between the two eye lenses is made adjustable to suit the various-
widths of eyes by means of two toothed wheel segments working into one another,..
one being attached to each of the two rods or tubes carrying the eye lenses. By
this means accurate, and at the same time rigid, simultaneous adjustment can be
obtained to suit the varying centres of the pupils of the eyes in various individuals,
by simply moving one of the lenses either to one side or the other. The same
adjustment is also obtained by the link connection which consists of a rod stretching:
diagonally across between the two tubes or rods carrying the lenses, and attached
at either side to a pin-the one end projecting upwards and the other downwards...
Attached to the lens mountings is a bent or hinged division of thin flexible metal
or any other material of a pliable nature such as cloth, leather, veneer &c and
shaped like a V or U and which opens and closes with the adjustment of the lenses.
and prevents the pictures being seen past the inner edge of the lenses.
Dated this 17th day of April 1895.
improvements in Stereoscopes.
ANDREW HAMILTON BAIRD, Scientific Instrument Maker, Nos. 37 and
39 Lothian Street, Edinburgh, 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 distance between the two lenses is made adjustable to suit the various.
widths of eyes by means of two toothed wheel segments A A working into one
another, one being attached to each of the two rods or tubes B B carrying the
lenses C C. By this means accurate, and at the same time, rigid, simultaneous
adjustment can be obtained to suit the varying centres of the pupils of the eyes.
in various individuals, by simply moving one or other of the lenses either to one.
side or the other. The same adjustment is also obtained by the link connection
which consists of a rod D stretching diagonally across between the two tubes or
rods carrying the lenses, and attached at either side to a pin-the one end
projecting upwards and the other downwards. Attached to the lens mountings is a.
bent or hinged division of thin flexible metal E or any other material of a pliable
nature such as cloth, leather, veneer &c. and shaped like a V or U and which
opens and closes with the adjustment of the lenses and prevents the pictures being
seen past the inner edge of the lenses. Fig. I of drawings represents the toothed
wheel segment movement and Fig. II represents the link movement.
ר .

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 :-
The method employed in making simultaneous adjustment of the lenses.
Dated this Seventeenth day of January 1896.