Improvements in Pooket Photographic Apparatus.
Year: 1896

page_text: Date of Application, 25th Apr., 1896
Complete Specification Left, 23rd Jan., 1897-Accepted, 13th Mar., 1897
Improvements in Pooket Photographic Apparatus.
We, COUNT THADÉE D'OKSZA of No. 4 Rue Picot, Paris, France, Landowner,
and GABRIEL BOURRELLY, of 199 Faubourg St. Honoré, Paris, France, Engineer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved photographic apparatus which will allow of
operating with time exposure or with instantaneous exposure at will, and which,
when not in use, can be folded into a very small compass and can then be easily
put in the pocket of the operator.
The apparatus is adapted to open and to shut after the manner of a book, and.
when it is shut up, it has also the appearance of a book. It is complete in itself, that
is to say, when it is desired to take a photograph of any object, it is sufficient to
open or to unfold the apparatus, in which condition it is then quite ready for
immediate operation without it being necessary to add anything to it, and inversely,
when the photograph or photographs which it was desired to take, hins or have been
taken, the apparatus can be shut up again without the necessity of removing or
displacing any of the parts or elements constituting the apparatus.
When the apparatus is shut up, all its parts are closed in and protected by a
metal box which may, if desired, be covered in leather, textile fabric, or any other
suitable material, so that there is consequently no danger of the apparatus getting
out of order or becoming damaged whilst in the pocket.
The special form of shutter allows of taking either "time" or "instantaneous
photographs at will without previous adjustment.
"
Any suitable and convenient type of plate-holder can be placed in the plate-
bolder frame of the apparatus. But a negative plate holder of a special type will
be hereinafter described which has been more specially designed for use in the
improved apparatus. The apparatus is also provided with means intended to hold
all the parts of the apparatus in firm and rigid connection when the apparatus is
opened for use. The construction of the apparatus is very strong and yet is so
simple that even an inexperienced person is able to open out the apparatus for
use and to fold it up, again with great ease in a few seconds, if necessary.
In the accompanying drawings,
Fig. 1 is a front elevation of the apparatus when closed.
Fig. 2 is a plan thereof in the same position.
Fig. 3 is a vertical section of the apparatus when open, the section being taken
on the dash-dotted lino 3-3 of Fig. 4; this figure showing in front elovation the
shutter mechanism in the closed position.
Fig. 4 is a plan of the apparatus when open.
Fig. 5 is a longitudinal section on the line 5-5 of Fige. 3 and 4, looking in the
direction of the arrows in these last figures.
Fig. 6 is a horizontal section on the line 6-6 of Fig. 3, looking in the direction
of the arrows, showing the rear portion of the apparatus in its "open" condition,
and the arrangement for holding the plate-holder frame in place.
Fig. 7 is a detail view in vertical section, corresponding to Fig. 3, of the
shutter mechanism, the shutter being shown open ready for taking a "titne "
photograph.

page_text: 18 & vertical section on the line - or rig. (.
Fig. 9 is a horizontal section on the line 9-9 of Fig. 7.
Figs. 10, 11 and 12 are views corresponding respectively with Figs. 7, 8 and 9,
but showing the shutter held up for taking an instantaneous photograph.
Fig. 13 is a front elevation partly in vertical section on the line 13-13 of
Fig. 15, showing a negutivo plate holder designed more particularly for use with
the apparatus illustrated in the preceding figures.
Fig. 14 is a vertical section on the line 14-14 of Fig. 13, looking in the
direction of the arrows in this last figure; and
Fig. 15 is a horizontal section of the plate holder on the line 15-15 of Fig. 13.
The apparatus comprises a flexible box constructed preferably of thin sheet metal
which may, if desired, be covered with leather, textile fabric, or any other suitable
material. The box which contains and encloses all the constituent elements of the
apparatus, is in the form of a book aud comprises three parts namely:-A. back a
and two lids or sides b, c, connected to the back a by hinges b', b, c, e, respectively,
as clearly shown in Fig. 3. The back a comprises a metallio band or plate,
which is stamped into a U form and over the two extremities of which fit
caps a, a which are of T-shape in longitudinal section and on the vertical
projections of which are screwed respectively the ends of the plate d carrying the
shutter mechanism which will be hereinafter described. The fids or sides b, c are
by préference, in the form of flat rectangular basins open on their front side, as
shown. When the apparatus is folded up, the box is held closed by a spring
button (Figs. 5 and 6) attached to the rear wall of the side c and adapted to
engage in a hole made in a corresponding position of the rear wall of the side b.
To open the box, all that is necessary is to press on the button so as to disengage
it from the hole .. Joint covers c' attached to the side o at top and bottom cover
the joints between the two sides b, c when the box is closed.
In the side c there is pivotally mounted at e (Fig. 6) a frame e intended to
receive the negative holders containing the sensitive plates to be impressed. This
frame, which can also receive the ground glass on which the image produced at
the back of the dark chamber is seen, is provided with suitable spring tappets e, e, e
to sustain the negative holder, to keep it in position, and to make it bear against the
front part of the frame e, whose upper cross-piece e (Fig. 5) is covered with black
velvet or other suitable material in order to prevent the passage of light between
the negative holder and the front part of the frame.
When the box has been opened and the frame e has been turned outward about
the axis e so as to bring it into the position shown in Figs. 4, 5, and 6, the said frame
is held to the side b by a spring latch 6, which bears, as shown in Fig. 6, against
the front edge of the frame e: this latch is secured to a stationary angle-piece
against which bears the edge of the frame e. A small projection & attached to the
latch passes into a slot 67 made in the rear wall of the side b and in the augle-
piece and projects slightly outside the box; when it is desired to fold up the
apparatus, it suffires to push this projection laterally to disengage the latch b
from the edge of the frame e and to permit the latter to be turned back or folded
into the side c.
Projections b, c (Figs. 4 and 5) respectively attached to the lower wall of the
side band the upper wall of the side c are provided with slots b, c in which work
screws 610, co, respectively fixed to the corresponding wall of the opposite side.
The extremities of these slots form stops for the said screws and limit the opening-
movement of the sides b, c. Cousequently it will be readily understood that,
when the apparatus has been opened and the frame e fastened by the latch 6', the
sides be can no lougér either spread out or approach each other and that the whole
forms a rigid structure.
To the frame e there is attached by a metallic framing e, a bellows g which is
made preferably of moulded supple caoutchouc and is in the form of a frustum of
a quadrangular pyramid and which is connected by its small end to a ring g' around
which this small end of the bellows is fastened and tightened by a ligature g or iu

page_text: any other suitable manner. The ring g passes freely onto a tube fixed to the
middle of the rear face of the plate d of the shutter-mechanisın. This tube, which
contains the objective of the apparatus, is surew-threaded externally an1 receives
a nut g, which is screwed on it and bears behinil the ring g', thus enabling the
bellows g to be stretched at will.
The objective is mounted with rather great friction in the objective-carrior h;
it is composed of a tube h' iuto which there is presse'l the diaphragm A and two
lenses, arrangel oue on each side of the diaphragm and held in place by the
screw-threaded washers ho, h, which are screwed into the tube (see Fig. 5).
A hole as is marie in the back a, opposite the objective, and at the middle of the
plate d there is made a corresponding hole d' with which the shutter co-operates.
The plate d is, as shown, in the form of a channel with Hat back or bottom and
whose sides bear against the wall of the hack a, whilst the back of the said plate
bears against the edges of the hinges b', &, c', c. In the sides of the plate i are
made two grooves d', d, in which slide vertically, one on the other, two plates i, j
provided with springs i, j respectively that tend to draw the plates downwards,
the lower ends of these springs being attached to stationary points, of the
plate d. A stop arrests the plate in its descent and holds it in the position
represented in the drawing, which is its normal position. In the position
represented in Figs. 3 and 5, which is the normal position or position of closure of
the shutter, the plate or shutter i rests by means of an abutment or shoulder i³
thereon, upon the upper edge of the shutter j. In the plate or shutter i there are
two recesses, or abutments with which co-operates, as will be hereinafter seen,
a hooled lever or spring detent k pivoted on an axle which is suitably supported
in the sides of the plate d and in the middle of which the said detent is helt in
position by two small sleeves or tubular distance pieces,. At its upper end
this detent carries a small projection around which there is coiled a helical
spring (Fig. 5) which hears at one end against the plate d and at the other end
against the end of the detent. A small butt in 4, which pisses through the back a
and bears against the end of the detent, enables the latter to be tilted against the
action of its spring which constantly tends to force the hooked end of the
detent towards the plate d.
To the upper part of the shutter j there is fixed the lower end of a rod, whose
upper end passes out through a hole made in the cap a' and carries a knob j.
The drawing of this knob upward raises the platej against the action of its springj
and the plate, by acting on the projection or shoulder of the shutter i, raises this
shutter against the action of the spring i. In this movement the upper edge of
the shutter i raises the hooked end of the detent &, which afterwards falls back
into the recess of the plate i. If at this moment the knob is liberated, the
spring immediately brings back the plate; to the position represented in the
drawings, whilst the plate or shutter i, retained by the detent k, remains in
the position represented in Figs. 7 and in which a hole in the shutter i is
located directly opposite to the hole d' in the plate d and to the objective, which
it then unmasks. This is the position into which the shutter-levice is brought for
taking a photograph with considerable exposure. When the period of exposure is
to terminate it is sufficient to press the knob 1 (Fig. 5) so as to disengage the
detent k, whereupon the spring immediately brings the shutter i back into the
position shown in Figs. 3 and 5, in which it masks or covers the objective.
If, instead of arresting the upward movement of the shutters at the moment
when the detent & engages in the recess it, this movement is continued until the
hooked end of this detent engages in the recess, the shutter i is brought into
the position represented in Figs. 10 and 11; if the knobbe then liberated,
the shutter will be brought back as before by its spring and the shutter i will
remain in the position into which it was moved, masking the hole d', which has not
been a single instant uncovered during the cocking of the shutter-device, as,
during the ascent of the shutters the platej covered the hole of the shutter i.
If, now, the knob / be pressed, the shutter i will be released and under the action

page_text: of its spring, will descend rapidly and unmask the hole d' in its descent, thereby
permitting the sensitive plate that is at this moment in the negative holder, at the
back of the dark chamber, to receive an instantaneous impression of the object to
be photographed.
The objective may if desired, he adjusted longitudinally by a pinion mounted
on the tube / and gearing with a rack on the tube h¹.
Figs. 13, 14, and 15 represent a negative holder designed for use with the apparatus
hereinbefore described. It comprises a frame m of material capable of being
moulded-e.g. celluloid or hardened caoutchouc-whose opening at one side corre-
sponds exactly to the size of the sensitive plate that the holder is to contain. On this
frame m there is fixed a thin metallic frame n whose internal lateral edges coincide
exactly with the edges of the opening of the frame m but whose upper and lower
internal edges project in front of the opening of the frame m, forming a rebate that
serves to retain the sensitive plate o which rests on an arc-shaped spring p whose
extremities are inserted in slits made in the inner portions of the lower corners of
the frame m. Iu front of the frame n slides the screen r which can be raised and
lowered by means of a projection, it being guided at the sides by lateral strips s.
The whole is enclosed in a metallic sheath at the front portion of which is
rivetted, at the upper part, a transverse metallic strip u forming a spring, which
causes the screen r always to bear against the frame ». A spring v fixed in the
middle of the back portion of the metallic sheath t causes the upper and lower
edges of the sensitive plate to bear against the upper and lower edges respectively
of the frame n, which, as is shown in Figs. 13 and 14, retain the said sensitive
plate. The frame n is provided in its internal upper edge with a recess to permit
the edge of the plate to be seized by a finger nail in order to depress it slightly
against the action of the spring p, which supports it, and to thus disengage it from
the frame n so as to enable it to be lifted out of the holder.
Instead of the simple holder just described, there might, of course, be employed
an ordinary double holder or even a quickly removable box adapted to contain a
number of plates, which would be mounted in the rebate of the plate-holder
frame e.
emen
et Photograpoio Apparatus.
We, COUNT THADEE D'OкSZA of No. 4 Rue Picot, Paris, France, Landowner
and GABRIEL BOURRELLY of 199 Faubourg Saint Honoré Paris France, Engineer
do bereby declare the nature of this invention and in what canner the same is to
be performed, to be particularly described and ascertained in and by the following
statement :-
This invention relates to an improved photographic apparatus which will allow
of operating with time exposure or with instantaneous exposure at will, and which,
when not in use, can be folded into a very small compass and can then be easily
put in the pocket of the operator.
The apparatus is adapted to open and to shut after the manner of a book, and
when it is shut up it has also the appearance of a book. It is complete in itself,
that is to say, when it is desired to take a photograph of any object, it is sufficient
to open or to unfold the apparatus, in which condition it is then quite ready for
immediate operation without it being necessary to add anything to it, and inversely,

page_text: when the photograph or photographs which it was desired to tako, has or have
been taken, the apparatus can be shut up again without the necessity of re.noving
or displacing any of the parts or elements constituting the apparatus.
When the apparatus is shut up, all its parts are closed in and protected by a
metal box, which may, if desired, be covered in leather, textile fabric or any other
suitable material, so that there is consequently no danger of the apparatus getting
out of order or becoming damaged whilst in the pocket.
The special form of shutter allows of taking either "time" or "instantaneous "
photographs at will, without previous adjustment.
Any suitable and convenient type of plate-holder can be placed in the plate-
holder frame of the apparatus, but a negative plate-holder of a special type will
be hereinafter described which has been more specially designed for use in the
improved apparatus. The apparatus is also provided with means intended to
hold all the parts of the apparatus in firm and rigid connection when the
apparatus is open for use. The construction of the apparatus is very strong, and
yet is so simple that even an inexperienced person is able to open out the apparatus
for use and to fold it up again with great ease in a few seconds, if necessary.
The apparatus may likewise, if desired, be provided with any suitable kind of
finder. In the drawings hereto auuexed, we have shown a special construction
comprising a finder, which, by means of a mechanical contrivance, can be made to
appear when it is desired to use the same, and which normally is concealed within
the closed apparatus wherein it is retained by a suitable catch capable of being.
disengaged, at will, when the apparatus is open.
In the drawings (reference being had to Fig. 1 to 15 inclusive of our
Provisional Specification, and to Fig. 16 to 21 inclusive of the accompanying
drawing).
Fig. I is a front elevation of the apparatus when closed.
Fig. 2 is a plan thereof in the same position.
Fig. 3 is a vertical section of the apparatus when opeu, the section being taken
on the dash-dotted line 3-3 of Fig. 4; this figure showing in front elevation the
shutter mechanism in the closed position.
Fig. 4 is a plan of the apparatus when open.
Fig. 5 is a longitudinal section on the line 5-5 of Figs. 3 and 4, looking in the
direction of the arrows in these last figures.
'open
"
Fig. 6 is a horizontal section on the line 6-6 of Fig. 3, looking in the
direction of the arrows, showing the rear portion of the apparatus in its "
condition, and the arrangement for holding the plate-holder frame in place.
Fig. 7 is a detail view in vertical section, corresponding to Fig. 3. of the shutter
mechanism, the shutter being shown open ready for taking a "time" photograph.
Fig. 8 is a vertical section on the line 8-8 of Fig. 7.
Fig. 9. is a horizontal section on the lino 9-9 of Fig. 7.
Figs. 10, 11 and 12 are views corresponding rospectively with Figs. 7, 8 and 9,
but showing the shutter held up for taking an instantaneous photograph.
Fig. 13 is a front elevation partly in vertical section on the line 13-13 of
Fig. 16, showing a negative plate-holder designed more particularly for use with
the apparatus illustrated in the preceding figures.
Fig. 14 is a vertical section on the line 14-14 of Fig. 13, looking in the direction
of the arrows in this last figure; and
Fig. 15 is a horizontal section of the plate-holder on the line 15-15 of Fig. 13.
In Figures 16 to 21 inclusive, we have shown a modified construction in which
a finder is used and in which the mechanism for bringing back the shutter is
somewhat different from the mechanism of the first arrangement showa.
Fig. 16 is a front sectional view on the line 16-16 of Fig. 17, corresponding to
Fig. 3, 7 and 10, showing the said modification, the shutter being closed.
Fig. 17 is a plan in section on the line 17-17 of Fig. 16 and 18; in this figure,
the shutter mechanism has been omitted for the sake of simplicity.

page_text: Fig. 18 is a rear view in section on the line 18-18 of Fig. 17, looking downward
into that figure, the finder being within the apparatus.
Fig. 19 is a vertical section on the broken line 19-19 of Fig. 18, the finder
being in the same position as in Fig. 18.
Fig. 20 is an underside view of Fig. 18 showing the index for the focussing
device and the brake-actuating knob for varying the rapidity of action of the
shutter for instantaneous photographs.
Fig. 21 is a view corresponding to Fig. 20 with the finder set out ready for use.
The apparatus comprises a flexible box constructed preferably of thin sheet
metal which may, if desired, be covered with leather, textile fabrio, or any other
suitable material. The box which contains and encloses all the constituent elements
of the apparatus is in the form of a book and comprises three parts namely
a back a and two lids or sides b, c, connected to the back a by hinges b', b, c, c³,
respectively, as clearly shown in Fig. 3. The back a comprises a metallic band or
plate, which is stamped into a U-form and over the two extremities of which fit
caps a', a' which are of T-shape longitudinal section and on the vertical projections
of which are screwed respectively the ends of the plato d carrying the shutter
mechanism which will be hereinafter described. The lids or sides b, c are, by
preference, in the form of flat rectangular basins open on their front side as shown.
When the apparatus is folded up, the box is held closed by a spring button c
(Figs. 5 and 6) attached to the rear wall of the side e and adapted to engage in a
hole &inade in a corresponding position of the rear wall of the side b. "To open
the box, all that is necessary is to press on the button so as to disengage it from the
hole & Joint covers c attached to the side c at top and bottom cover the joints
between the two sides bo when the box is closed.
In the side c there is pivotally mounted at e' (Fig. 6) a frame e intended to
receive the negative holders containing the sensitive plates to be impressed.
This frame, which can also receive the ground glass on which the image
produced at the back of the dark chamber is seen, is provided with suitable spring
tappets e, e, e, to sustain the negative holder, to keep it in position, and to make
it bear against the front part of the frame e, whose upper cross-piece e (Fig. 5)
is covered with black velvet or other suitable material in order to prevent the
passage of light between the negative holder and the front part of the frame.
When the box has been opened and the frame e has been turned outward about
the axis e so as to bring it into the position shown in Figs. 4, 5 and 6, the said
frame is held by the side b by a spring latch &, which bears, as shown in Fig. 6,
against the front edge of the frame e; this latch is secured to a stationary angle-
piece b against which bears the edge of the frame e. A small projection b attached
to the latch passes into a slot 6 made in the rear wall of the side b and in the
angle-piece 6' and projects slightly outside the box; when it is desired to fold up
the apparatus, it suffices to push this projection laterally to disengage the latch b
from the edge of the frame e and to permit the latter to be turned back or folded
into the side c.
Projections 6, 8, (Fig. 4 and 5) respectively attached to the lower wall of the
side b and the upper wall of the side care provided with slots 6, in which work
screws, respectively fixed to the corresponding wall of the opposite side.
The extremities of these slots form stops for the said screws aud limit the opening
movement of the sides b, c. Consequently it will be readily understood that when
the apparatus has been opened and the frame e fastened by the latch 6, the
sides b, c can no longer either spread out. or approach each other and the whole
forms a rigid structure.
To the frame e there is attached by a metallic framing e, a bellows 9 which is
made preferably of moulded supple caoutchouc and is in the form of a frustum of a
quadrangular pyramid and which is connected by its small end to a ring g' around
which this small end of the bellows is fastened aud tightened by a ligature g' or in
auy other suitable manner. The ring g passes freely outo a tube fixed to the
middle of the rear face of the plate d of the shutter mechanism. This tube, which

page_text: contains the objective of the apparatus, is screw-threaded externally and receives a
But g, which is screwed on it and bears behind the ring g', thus enabling the
bellows a to be stretched at will.
The objective is mounted with rather greater friction in the objective
carrier h; it is composed of a tube A into which there is pressed the diaphragm /
and two lenses arranged one ou each side of the diaphragm and
held in place by the screw-threaded washers h,, which are screwed into the
tube (see Fig. 5). A hole a' is made in the back a, opposite the objective, and
at the middle of the plate d there is made a corresponding hole d' with which the
shutter co-operates. The plate d is, as shown, in the form of a channel with flat
back or hottom and whose sides bear against the wall of the back a, whilst the back
of the said plate bears against the edges of the hinges b', b, c, c. In the sides of
the plate d are made two grooves d', d, in which slide vertically, one on the other,
two plates i, j, provided with springs i,j respectively that tend to draw the plates
downwards, the lower ends of these springs being attached to stationary points,
of the plate d. A stop arrests the plate in its descent aud holds it in the
position represented in the drawing, which is its normal position. In the position
represented in Figs. 3 and 5, which is the normal position or position of closure of
the shutter, the plate or shutter i rests by means of an abutment or shoulder
therean, upon the upper edge of the shutter j. In the plate or shutter i there are
two recesses, or abutments with which co-operates as will be hereinafter seon,
a booked lever or spring detent & pivoted on an axle & which is suitably supported
in the sides of the plate d and in the middle of which the said detent is held in
position by two small sleeves or tubular distance pieces, k. At its upper end
this detent carries a small projection around which there is coiled a helical
spring (Fig. 5) which bears at one end against the plate d and at the other end
against the end of the detent. A small button, which passes through the back a
and bears against the end of the detent, enables the latter to be tilted against the
action of its spring which constantly tends to force the hooked ond of the detent
towards the plate d.
To the upper part of the shutter j there is fixed the lower end of a rod j, whose
upper end passes out through a hole made in the cap a' and carries a knob. The
drawing of this knob upward raises the plate j which by acting on the projection or
shoulder of the shutter i raises this shutter against the action of the spring. In
this movement, the upper edge of the shutter i raises the hooked end of the
detent k, which afterwards falls back into the recess of the plate i. If at this
moment the knob is liberated, the spring j immediately brings back the plate; to
the position represented in the drawings, whilst the plate or shutter i, retained by
the detent k, remains in the position represented in Figs. 7 and 8, in which a hole i
in the shutter i is located directly opposite to the bole a' in the plate d and to the
objective, which it then unmasks. This is the position into which the shutter
device is brought for taking a photograph with considerable exposure. When the
period of exposure is to terminate, it is sufficient to press the knob (Fig. 5) 80 as
to disengage the detent k, whereupon the spring i immediately brings the shutter i
back into the positions shown in Figs. 3 and 5, in which it masks or covers the
objective.
If, instead of arresting the upward motion of the shutters at the moment when
the detent engages in the recess i, this movement is continued until the hooked
end of this detent engages in the recess i, the shutter i is brought into the position
represented in Figs. 10 and 11; if the knob j be then liberated, the.shutter will
be brought back as before by its spring aud the shutter i will remain in the position
into which it was moved, masking the hole d', which has not been a single instant
uncovered during the cooking of the shutter-device, as, during the ascent of the
shutters, the plate ; covered the hole of the shutter i. If, now, the knob / be
pressed, the shutter i will be released and under the action of its spring, will
descend rapidly and unmask the hole d in its descent, thereby permitting the

page_text: sensitive plate that is at this moment in the negative holder, at the back of the
dark chamber, to receive an instantaneous impression of the object to be
photographed.
The objective may, if desired, be adjusted longitudinally by a pinion mounted on
the tube hand gearing with a rack on the tube h¹.
Figs. 13, 14 and 15 represent a negative holder designed for use with the
apparatus hereinbefore described. It comprises a frame m of material capable of
being moulded-e.g. celluloid or bardeued caoutchoue-whose opening at one side
corresponda exactly to the size of the sensitive plate that the bolder is to contain.
On this frame m there is fixed a thin metallic frame n whose internal lateral edges
coincide exactly with the edges of the opening of the frame but whose upper and
lower internal edges project in frout of the opening of the frame m, forming a
rehate that serves to retain the sensitive plate o which rests on an arc-shaped
spring p whose extremities are inserted in slits made in the inner portions of the
lower corners of the frame m. In front of the frame n slides the screen which
can be raised and lowered by means of a projection r, it being guided at the sides
by lateral strips 3. The whole is enclosed in a metallic sheath at the front
portion of which is rivetted, at the upper part, a transverse metallic strip forming
a spring, which causes the screen r always to bear against the frame n. A spring v
fixed in the middle of the buck portion of the metallic sheath t causes the upper
and lower edges of the sensitive plate to bear against the upper and lower edges
respectively of the frame n, which, as is shown in Figs. 13 and 14, retain the said
sensitive plate. The frame n is provided in its internal upper edge with a recess.
to permit the edge of the plate to be seized by a finger nail in order to depress it
slightly against the action of the spring p, which supports it, and to thus disengage
it from the frame n so as to enable it to bo lifted out of the holder.
lostead of the simple holder just described, there might, of course, be employed
an ordinary double holder or even a quickly removable box adapted to contain
a number of plater, which would be mounted in the rebate of the plate-holder
frame e.
In the modification shown in Fig. 16 to 21 inclusive, the arrangement of the
apparatus remains substantially the same as a whole and the same letters of
reference designate the same parts as the corresponding parts. But as regards the
shutter, the spring it is suppressed and is replaced by a metallic band to attached
at one end to the shutter i, the other end, after passing round an intermediato
pulley winds upon a barrel containing a spiral spring and suitably mounted
at the rear end of the plate d carrying the shutter mechanism. The single
spring of the previous arrangement is replaced by two similar springs Fig. 16,
arranged on each side. Furthermore, a brake i pivotted at 4 (and which can be
actuated from the outside by means of a screw the head of which is con-
stituted by a milled or other knob i" projecting from the cap a') bears against the
periphery of the cheeks of the barrel, whereby, on screwing or unscrewing the
sorcw more or less, the movement of the barrel can be more or less retarded so as
to vary the rapidity of action of the shutter for instantaneous photography.
In order that the operation of photographing may be accurate, whatever be the
distance at which the object to be photographed is placed from the objective
or lens, we make the lens movable in the lens carrying tube h, the fastening of
which to the bellows can be obtained as reviously described. For that purpose,
the tube which slides with but slight friction in the tube h, has, at its periphery,
teeth, Fig. 17, into which gears a small pinion mounted at one end of
Brod, the other end of which projects from the cap a' and carries fast thereon
a small index " by which the same can be turned for causing the lens to come
nearer to and move away, so as to bring it into the desired focus corresponding to
the distance of the object. A scale formed on the cap a co-operates with
the index and enables the proper position of the lens to be determined and
obtained.
Finally, in that same modification, we have shown an arrangement of finder, the

page_text: lens y of which may, if desired, be provided with cross-wires and is fitted in a
suitable metal frame y' guided by two vertical rods y suitably secured in the
proper position. When the apparatus is closed, and when it is not desired to
employ the finder, the latter is pushed in, into the position shown in Figs. 17
and 19, in which it is retained by the nose y of the small lever y pivotted at y
and the tail y of which projects towards the rear. A small flat spring y
constantly brings the lever back into the required position in order that its nose y
may engage the lower edge of the frame y', Fig. 19. The small spiral springs y, y
surrounding the guide rods y, y bear under the said frame y' whereby they are
held compro-sed when the finder is within the apparatus, as shown in Figs. 17.
and 19. An aperture is formed in the cap a¹ for the passage of the finder ;
such aperture is closed by the top of the frame y' coming flush with the top of the
cap a
When the apparatus is unfolded or open and it is desired to employ the finder,
it is simply necessary to press with one finger upon the tail of the lever y in
the direction shown by the arrow Fig. 19; the nose leaves the edge of the
frame y and the springs y, as they expand, cause the finder to move outward into
the position shown in Fig. 21. On being freed, the lever y returns to the position
shown, impelled by the spring y'. In order to move the finder back it is simply
necessary to press it inwardly until the lower edge of the frame y¹ engages the
Dose y and is held thereby.
It is obvious that at or near the aperture a³, Figs. 1, 5 and 19, may be arranged
a small sliding shutter which could be opened or closed by a knob for the purpose
of uncovering or covering the said aperture, as desired by the operator.
We wish it also to be understood that we do not limit ourselves strictly to some
of the details of construction shown and especially that we do not restrict our-
selves exactly to the described arrangement of spring latch b, since the said latch,
as well as other details of construction might perfectly well be modified without
yet departing from the spirit of our said invention.
Having now particularly described and ascertained the nature of the said invon-
tion and in what manner the same is to be performed, we declare that what we
claim is-
1. A pocket photograph apparatus comprising in its construction, a folding box
of book forin, a negative plate-holder frame which is mounted to pivot in one of
the sides of the said box, and a shutter device which enables a "time" or an
instantaneous photograph to be taken at will and which is mounted in front of the
objective and enclosed in the interior of the back of said book-shaped box,
substantially as and for the purposes described and shown.
2. In a pocket photographic apparatus of the kind described, a folding box of
book form, composed of a back such as a and of two sides such as bc, connected to
the back by hinges and containing all the constituent parts of the apparatus,
substantially as described and shown.
3. In a pocket photographic apparatus, substantially as described, the com-
bination with a folding box of book form, of a negative plate holdor frame which
is mounted to pivot in one of the sides of said box and capable, when the apparatus
has been spread out, cf being latched or bolted to the other side of said box by
means of a spring bolt, the said frame having attached to it one of the ends of the
bellows whose outer end surrounds the objective carrying tube, substantially as
described and for the purpose set forth.
4. In a pocket photographic apparatus of the kind specified, the combination,
with a folding box of book form and a negative plate holder frame, substantially
as described and shown, of a shutter device which enables a "time" or an
instantaneous photograph to be taken at will, and which is mounted in front of the
objective and enclosed in the interior of the back of said book-shaped box,
substantially as aud for the purposes set forth and as shown in the annexed
drawings.

page_text: 5. In a photographic apparatus of the kind described, the arrangement of the
projection, fixed to each of the sides respectively and furnished with
grooves, in which work buttons or projections 60, co respectively fixed to
the opposite side, for the purpose of limiting the opening of the said sides to the
desired separation for receiving between them the frame e, substantially as described
and shown.
6. In a photographic apparatus of the kind described, a bollows such as g
of supple moulded caoutchouc or any other supple material attachel at one
part to the frame e and at another part to a ring g surrounding the tube con-
taining the objective, the said ring being retained on the said tube by a nut g³
screwing on it, substantially as described and shown and for the purpose set
forth.
7. In a photographic apparatus of the kind described, mounting the lens with
light friction in the tube h, and the contrivance comprising the rack 10, pinion ",
rod A" and index 4", causing the said lens to move forward or recede as required
by the focussing distance, substantially as described and shown.
8. In a photographic apparatus of the kind described, a shutter device which
enables time or "instantaneous" photography to be effected at will and consists of
two shutters ij vertically movable between the sides of the plate d, and which
springs respectively tend to lower; the spring detent & co-operating with the
recesses, mude in the shutter i in order to retain the said shutter cocked in the
position desired for time photography or for instantaneous photography; the pull
for actuating the shutters j and by means of the latter, the shutter i and the
button for actuating the detent in order to unlatch the shutter i when the
shutter device has been cocked, substantially as described and showu and for
the purposes set forth.
9. In a photographic apparatus of the kind described, the modified construction
of shutter in which the upper shutter is brought back by a barrel, such as ***
Acting upon a metal band 10 passing over the intermediate pulley ", in combination
with a brake such as ", actuated by a screw, such as ", substantially as described
and shown and for the purposes set forth.
10. In a photographic apparatus of the kind described, a finder such as y', y', in
combination with two guide rods y, a catch lever y and two springs acting to
push the finder outwardly, when it is no longer retained in its inward position by
the said lever, substantially as described aud shown and for the purposes set
forth.
11. In a photographic apparatus of the kind described, a negative holder for
enclosing a sensitive plate consisting of the frame m of material capable of being
moulded, such as celluloid or caoutchouc; a sheath t of metal; a rebate n; a
screen sliding above this rebate in the interior of the metallic sheath and guided
laterally by linings s; a spring i for supporting the sensitive plate by its lower
edge; a spring p causing the said sensitive plate to bear within the rebate n
and a spring u causing the screen to bear on the forepart of the said rebate,
substantially as described and showu, and for the purposes set forth.
Dated this 23al dev of
орилит 1907
ated this 2xl doy of Lonuary 1907
For the Applicants,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.