A Combined Photographic Camera and Opera, Field, or like Glasses.
Year: 1894

page_text: Date of Application, 24th Feb., 1894
Complete Specification Left, 15th May, 1894-Accepted, 8th Sept., 189!
PROVISIONAL SPECIFICATION..
A Combined Photographic Camera and Opera, Field, or like
Glasses.
ROBERT HARRY BUTTERWORTH 30 Stanley Street, Galashiels, N.B. Private
Tutor, do hereby declare the nature of this invention to be as follows:-
That the parts invented can be applied or added to any field, tourist or opera
glasses in present use, and have for their object the conversion of field and opera
or like
glasses into "A combined photographic camera, and opera field or like
glasses" without increasing their size.
One eye piece of any field, opera or like glasses is removed, and a special
shutter and lens, made all in one piece, is pushed down into the focussing chamber
of the tube, and practically takes the place of said eye piece; this lens and shutter
is of my invention and is worked as follows-
The shutter end of the instrument is pointed at an object or landscape, for
producing a photographic picture or copy thereof, and the object or view pointed
at can be seen through the second tube of the instrument, which remains exactly
as formerly and acts for the time being as a view finder, and shows the size of the
picture as it will appear when taken on a sensitized plate or film held at the object
glass end of the instrument.
An imperceptible point of a pivotted and tongued lever, is then depressed which
lifts the tongue of said lever out of a slot cut in the edge of the circular shutter
plate.
The normal position of the tongue of said lever, is in the slot, and a spring is
fixed on to the under side of the lever, which keeps the tongue in its place and
causes the lever to project slighly above the shutter mount, so that it can be actuated
by the finger.
The movable circular shutter plate is pivotted between, and slighly projects
past two other plates, connected by a half ring of metal or such like; these plates
project over the half ring so as to make a groove on the outside, between the two
plates, and in this groove is fixed the above mentioned lever, with its tongue
pointing or projecting inside the ring and on to the edge of shutter plate; the two
plates have a hole cut through the centre of each, corresponding to a hole cut
through the movable shutter plate.
The circular shutter plate is made heavier on one side or in one half of its
circular face or diameter than the other, and has a circular hole cut through its
lightest part, and corresponding to the holes in the two plates. The lever being
depressed and the tongue lifted out of the above mentioned slot, the shutter plate
is free to swing round by its own weight, exposing during half its circular
movement, the hole in the shutter plate, to the permanent holes cut through the
front and back plates of the shutter mount; thus admitting rays of light, passing
from an object or landscape into the interior of the instrument, through the field
lens and object glass on to the film or sensitized plate, and upon the circular
movement being completed, the lever locks into the slot, and the holes in the mount
This action of
are closed, thus stopping the light from entering the instrument.
opening and closing the holes, causes the shutter to make an instantaneous
exposure.
The shutter plate in projecting past the front and back plates of the mount, may
be moved round with the finger or thumb, till a lock or catch is made by the lever

page_text: tongue into a slot in the plate edge, which intimates that the hole in the plate
coincides with the holes in the mount; and that the light is entering simultaneous
through the holes in the shutter plate and mount and thus into the instrument. The
light is allowed to enter for a certain period of time, thus causing a time exposure
to be made; after which the point of the lever is touched as before, and the shutter
plate is released and swings back or round into its original or normal position,
and prevents any further light entering the instrument until the process is
repeated.
The object glasses will remain in the opera, field or like glasses, and retain their
original positions.
The hood of the object glass on the side of the instrument which holds the
shutter and lens, is pulled slightly forward for about a quarter of an inch, so as
to allow a circular rim, which can be made of iron brass or aluminium, to slip into
the hood or over the casing containing the object glass; this rim has a circular
plate fixed on the top of it, with a square or other recessed and framed hole cut
through it; and a special hinged frame fixed on to the said plate, so that the frame
can open and close over the square or like hole in the circular plate, and lock itself
by means of a S-shaped hook or catch, the object of this rim with plate and
hinged frame, is, that when a sensitized plate or film, contained in a slide, sheath or
plate holder, is placed in the recessed and framed hole, and the hinged frame closed
over the top of said slide sheath or plate, holder, the hinged frame locks it into
position over the object glass of the instrument.
The parts of the invention above described form a devise for a combined
photographic camera and opera, field or like glasses.
The method of using the instrument will be as follows-
The plate holder containing the sensitized medium is held firmly in position over
the object glass, and allows the slide of the plate holder to be drawn; the shutter is
pointed towards the object to be photographed, and the exposure is made by
admitting the rays of light from the object to the sensitized surface contained in
the slide or plate holder, by the action of the shutter opening and closing the holes
before mentioned.
If the glasses are now inverted, and the eye piece and the hole in the shutter
plate be looked through, you have the field, opera or like glasses as before.
Nothing is removed, or added to the glasses, there is no screwing, unscrewing,
changing tubes or glasses, or alteration whatever to be effected after once the
device is applied to the glasses.
No screws, cement or solder are used in the applying of my invention to any of
the glasses in present use as opera field or like glasses, and they are not increased
in size.
And after my invention is applied, there need be no changing or altering from
or adding to anything connected with the glasses, to make it a combined photo-
graphic camera and opera, field or like glasses, and yet at the same time the glasses
will open and focus in the usual way, and close up and go into the original case
that was made to hold them.
My invention improves the utility of the glasses, as they are always ready for
use, and are in focus as a photographic camera as soon as they are taken from the
case.
All the usual field glasses with twin telescopic focussing tubes can be fitted with
my invention and be used as a combined photographic camera and opera field or
like glasses.
It is applicable for the use of tourists, architects, draftsmen, detectives, the army
and photographers generally.
Dated this 22nd day of February 1894.

page_text: A Combined Photographic Camera and Opera, Field, or like
Glasses.
ROBERT HARRY BUTTERWORTH 30 Stanley Street Galashiels N.B. Private
Tutor, 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 :-
That the parts invented can be applied or added to any field, tourist or opera
glasses in present use, and have for their object the conversion of field and opera
or like glasses into "a combined photographic camera, and opera, field or like
glasses" without increasing their size.
The invention of the parts are described and worked as follows, reference being
made to accompanying drawings, in which :-
Figure 1, is an elevation, partly in section of one side of the glasses, shewing
the device in position.
Figure 1. A B C, is an elevation of the device shewing holes in eyepiece and
in back and front plates; with lens B, cap b & tube A.
Figure 2., is an elevation of the device, showing shutter plate P, and one
mode of fixing the device.
Figure 3., is a plan of the shutter mount showing circular shutter plate P, and
pivotted lever.
Figure 4., is a view of the lever with spring and tongue.
Figure 5., is a plan of the circular shutter plate.
Figure 6., is a plan of the slide-holder with rim and circular plate on the top.
Figure 7., is a side view of the slide-holder showing hinged frame open.
Figure 8., is a front view of slide.
Figure 9., is a side view of slide.
Figure 10., is a section view of slide.
Figure 11., is a front view of the case to contain plate holder and slide.
Figure 12., is a section view of the case to contain plate holder and slide.
Figure 13., is a front view of plate holder or sheath.
Figure 14., is a side view of plate holder or sheath.
One eye piece such as C, Fig. 2., of any field opera or like glasses is removed,
and a special tube, containing a shutter and lens as A, B, C, P, made all in one
piece, is pushed down into the focussing chamber of the tube e, and practically
takes the place of said eye piece, this lens B, and shutter P, tube A is of my
invention and is worked as follows: C. Fig. 1., the shutter end of the instrument,
is pointed at an object or landscape, for producing a photographic picture or copy
thereof, and the object or view pointed at can be seen through the second tube of
the instrument which eyepiece remains exactly as formerly, and acts for the time
being as a view finder, and shows the size of the picture as it will appear when
taken on a sensitized plate or film, held at the object glass i., of the instrument.
0
P, Figs. 2 and 3., is the circular shutter plate; an imperceptible point G of a
pivotted and tongued lever Fig. 4, is then depressed which lifts the tongue I of
said lever out of a slot M, cut in the edge of the circular shutter plate P. The
normal position of the tongue of said lever is in the slot, and a spring N,
is fixed on to the underside of the lever, which keeps the said tongue
place; and causes the lever at G to project slightly above the shutter mount D.,
so that it can be actuated by the finger of the hand.
in its
The movable circular shutter plate P, is pivotted at J, between, and slightly
projecting past two other plates a, a, connected to a half ring of metal a', or such
like, which forms a mount to contain the shutter plate P., the plates a. a. project
over the half ring, so as to make a groove on the outside, between the two plates,

page_text: and in this groove is fixed the above mentioned lever Figure 4., with its tongue I,
pointing or projecting inside the ring k., and on to the edge of shutter plate P.,
the two plates have a hole d. d. cut through the centre of each, corresponding to
a hole E cut through the movable shutter plate P.
The circular shutter plate P is made heavier on one side, or in one half of its
circular face or diameter L, f, than the other and has a circular hole E cut
through its lightest part, and corresponding to the holes d, d, in the two plates a, a,
it has also stops or studs m¹, fixed on the under side, corresponding to stops or
studs m, m, in plate a, which prevents the shutter plate swinging round too far.
The lever G; being depressed and the tongue I; lifted out of the slot M, the
shutter plate is free to swing round by its own weight, exposing during half its
circular movement, the hole E in the shutter plate, to the permanent holes d. d.
cut through the front and back plates of the shutter mount D, thus admitting rays
of light, passing from an object or landscape into the interior of the instrument,
through the field lens B and object glass i, on to the film or sensitized plate, and
upon the circular movement being completed, the lever locks into the slots M;
and the holes in the mount d, d, are closed, thus stopping the light from entering
the instrument. This action of opening and closing the holes, causes the shutter
to take an instantaneous exposure.
The circular shutter plate P, in projecting past the front and back plates of the
mount as at K; may be moved round with the finger or thumb, till a lock or catch
is made by the lever tongue 1; into a slot in the plate edge, which intimates that
the hole in the shutter plate coincides with the holes in the mount d. d. and that
the light is entering simultaneously through the holes in the shutter plate and mount
and thus into the instrument. The light is allowed to enter for a certain period of
time, thus causing a time exposure to be made, after which the point G of the lever
is touched as before, and the shutter plate is released and swings back or round
into its original or normal position, and prevents any further light entering the
instrument until the process is repeated.
The object glasses i, will remain in the opera, field or like glasses, and retain
their original positions.
The hood X; of the object glass on the side of the instrument which holds the
shutter P, tube A and lens B; pulled slightly forward for about a quarter of
an inch Y, so as to allow a circular rim T, which can be made of iron brass or
aluminum, to slip into the hood, or over the casing containing the object glass;
this rim has a circular plate R, fixed on the top of it, with a square or other
recessed and framed hole U, cut through it; and a special hinged frame W, fixed
on to the said circular plate R, so that the frame can open and close over the
square or like hole U; in the circular plate, and lock itself by means of an
Sshaped hook or catch V, the object of this rim with circular plate and hinged
frame, is; that when a sensitized plate or film contained in a sheath or plate
holder, is placed in the recessed and framed hole, and the hinged frame closed over
the top of said plate or film holder, the hinged frame locks it into position over
the object glass i; (see Fig. 1.) of the instrument.
The sensitized plate or film is placed in 11. Fig. 13., of which 12 is a ledge to
hold it in the slide shewn in Fig. 8, is then slipped over the plate holder Fig. 13,
then the plate or film holder along with the movable slide is slipped or pushed into
the case shewn in Fig. 11, this case containing the plate or film holder and slide is
placed in t; Fig. 7. and locked into position over the object glass i; by means of
the hinged frame W before mentioned, the plate is then exposed to the interior of
the instrument, by pulling or drawing out the slide shewn in Fig. 8. and the light
from an object or landscape pointed at is admitted to the sensitized plate in the
manner already described.
The method of using the instrument will be as follows:-
The case Fig. 11; containing the sensitized plate or film holder, and movable
slide, is held firmly in position over the object glass, thus allowing the slide Fig. 8
to be drawn out, the shutter and eye piece are pointed towards the object to be

page_text: photographed, and the exposure is made by admitting the rays of light from the
object to the sensitized surface contained in the holder, by the action of the
shutter opening and closing the holes already described.
To change the camera, into a field opera or like glasses invert the glasses and
look through the eye piece and shutter end of the instrument."
No screwing unscrewing, changing tubes or glasses or alteration whatever need
be effected after once the device is applied to the glasses; to make it “a combined
photographic camera and opera, field or like glasses."
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 :-
1. A photographic leus, and a movable circular shutter plate with an aperture in
it, both contained in a tube, which tube takes the place of the ordinary eye piece
in any opera, field or like glasses, thus making "a combined photographic camera
and opera field or like glasses."
2. A round or square frame with a round or other hole through it, and a rim
attached to the frame so that it can be pushed into the hood or over the casing of
any opera field or like glasses, so as to hold a film or plate holder and a slide.
3. A film or plate holder with a case or pocket for containing same, and a
movable slide for exposing the film or plate to the action of light.
4. Applying the device to any opera field or like glasses, so as to form a
combined photographic camera and opera field or like glasses, without increasing
their size.
5. Applying the device without screws cement or solder.
6. The herein described arrangement forming "a combined photographic camera
and opera field or like glasses," applicable to all the usual twin tube focussing
glasses, and so adapted that they can be used by tourists architects draughtsmen,
detectives, the army, and photographers generally as a combined photographic
camera and opera field or like glasses."
Dated this 14th day of May 1894
"
R. H. BUTTERWORTH.