Improvements in Photographic Cameras.
Year: 1898

page_text: Date of Application, 5th Jan., 1898
PROVISIONAL SPECIFICATION.
Improvements in Photographic Cameras.
We, JAMES BOWRY LANE, of 23, Clifden Road, Clapton Park, London, E.,
Camera Maker, and CHARLES HENRY WATSON, of 313, High Holborn, London,
W.C., Optician, do hereby declare the nature of this invention to be as follows:-
This invention relates to magazine photographic cameras and consists essentially
of a film holding magazine pivoted in the camera body and adapted to swing
therein the magazine being provided with sets of escapement claws or detents
adapted to retain the films in succession at position for exposure and to release
them after exposure, the operation of the escapement detents being dependent on
the swinging motion of the magazine by which the film when released is brought
to such a position as to ensure its fall together with its accompanying card into
a well below.
IOS
The one set of escapement claws or detents at the top and bottom sides of the
magazine which engage the top and bottom margins of the foremost film when
or are caused
brought up to the exposure plane tend by spring action
by positive means to project into position for engagement when the magazine
is swung forward
as to bring the foremost film to the proper position
for exposure, but are caused by positive engagement with the body of the camera,
or tend by spring action, to be retracted out of engagement with the said film when
the magazine is swung backwards. By this backward swing of the magazine the
foremost film thus released is tilted forwards to such an angle as to ensure its
immediate fall along with the card which follows it, into the well provided for its
reception a guiding hood of celluloid or other suitable material carried by the
forwardly projecting side cheeks of the magazine preventing the film and card
falling too far forwards.
The other set of escapement detents at the sides of the magazine are so much
in rear of the first as to be in the plane of the intervening card separating the
foremost film from the next in succession and they tend by spring action or are
caused by positive means to be interposed in position for engagement with the
end margin of the said second film by the backward swinging motion of the
magazine, these detents so entering into engagement with the second film before
the first film is disengaged. On the forward swinging movement of the magazine
these detents are caused by positive means carried by the body of the camera, or
tend by spring action, to become retracted and disengaged from the second film
so as to permit it to come forward to the exposure plane where it is retained in
turn by the first mentioned detents which have meanwhile been permitted or
caused to return to operative position by the inward swinging movement of the
magazine.
The films are not notched to give passage to the escapement detents as in some
other cameras, but the cards are cut away or notched at the ends to permit the
second set of detents to enter between the foremost and following films.

page_text: The well in which the exposed films and alternating cards are superposed in
order of exposure, has a downwardly inclined bottom and a door at the rear at
which the films and cards may be slipped out without disturbing their order, and
their disarrangement when in the well is prevented by a pair of spring pressed
lever arms adapted to bear upon the pile of films and cards in the well, the rock
shaft on which the arms are carried being so connected with the swinging
magazine that by the backward swing of the latter the presser arms will be raised
out of the way to allow the exposed film and card which are then released, to
fall upon the pile the pressers coming into action again when the magazine is
swung forward.
Dated this 5th day of January 1808
?
A. M. & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London.
"
Prodents in Hotograpпíс Cameras,
We, JAMES BOWRY LANE, of 23, Clifden Road, Clapton Park, London, E.,
Camera Maker, and CHARLES HENRY WATSON, of 313, High Holborn, London,
W.C., Optician, 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;-
-
This invention relates to magazine photographic cameras and consists essentially
of a film-holding magazine adapted to swing within the camera body and provided
with sets of escapement claws or detents so operated by the swinging movement
of the magazine as to retain the foremost film in position for exposure and to
release it after exposure, the backward motion of the magazine causing the film,
when released, to assume such a forwardly inclined position as to ensure its fall
along with its backing card, into a well below.
The invention will be described with reference to the accompanying drawings
forming part of this specification wherein Figures 1 and 2 are sectional side eleva-
tions of the rear part of a camera body containing the magazine which in Figure 1
1s shown in its normal or forward position, and in Figure 2 in its rearward
position; in both figures the films, the intervening cards, and the spring by which
they are pressed forward as usual, are omitted to avoid confusing the drawing.
Figure is a horizontal section of the upper rear portion of the camera body,
shewing the top of the magazine in its forward position. Figure 4 is a horizontal
section of the rear portion of the camera body, and of the magazine, the latter being
shewn in its forward position and part of the bottom plate of the magazine being
broken away. Figure 5 is a perspective rear view of one of the backing cards.
The magazine A (in which is contained the pack of films alternated by backing
cards pressed forward by a spring as usual) is a box open at front and closed at
back by a door a and fitted to swing light-tight about the hinges a¹ of the door a,
as shewn in Figure 2. At the open front side of the magazine are provided two
sets of escapement claws or detents, the one set comprising a pair of detents CC
at the top and a pair of similar detents C¹, C¹, at the bottom side of the magazine,
the said detents being adapted to project in front of the top and bottom margins
of the foremost film contained in the magazine, and so retain it at the exposure
plane. The upper pair C are hinged to the magazine at c and are pressed into such
position of engagement with the film by a spring c bearing on a cross bar ² to
which the detents are attached and whose ends project into engagement with the

page_text: edge of cam slots c³ in the side walls of the camera body' so as to retain the detents C
and cause them to be withdrawn from in front of the film when the magazine is
swung backwards and permit them to return to position of engagement with the
next following film when the magazine is swung forwards. The action of the
other pair C is similar except that it is preferred that they should be pressed out
of position of engagement with the film by a spring and be returned to such
position by the action of cam slots in the sides of the camera with which the ends
of their cross rod c engage, the slots being (as indicated) of such form as to pro-
duce this result. By the backward swing of the magazine the foremost film (with
its backing card) thus released, is tilted forwards to such an angle as to ensure its
immediate fall along with the card which follows it, into the well G.
The inwardly projecting claws of the other (or side) sets of escapement de-
tents D D are adapted to project through slots d in the side cheeks of the magazine
and they are slightly in rear of the plane of those of the first set C C₁ so as, when
pressed inwards, to pass behind the card which backs the foremost film, and pro-
ject in front of the next following film. This the detents D D are caused to do
by contact of their outwardly projecting portions e with inclined cam surfaces E
on the sides of the camera body, when the magazine is swung backwards and before
the foremost film has been disengaged from the detents C C¹. On the forward
swinging movement of the magazine the detents D are permitted to spring out-
wards so as to allow the second film (followed by its backing card) to come forward
to the exposure plane where it is retained in turn by the first mentioned
detents C¹ which have meanwhile been caused to return to their operative
position. The films are not notched to give passage to the escapement detents as
in some cameras, and the intervening cards F are merely chamfered on the rear
side, as shewn at f in Figure 5, to permit the entry between them and the next
following film, of the detents D D.
The well G at the lower part of the camera body, into which the exposed films
and alternating cards fall in superposed order after exposure, has a downwardly
inclined false bottom g of celluloid fastened at its front end only to the bottom of
the camera body and capable of being sprung downwards, through the aperture
closed by the door G¹ to enable the films and cards to be slipped out without dis-
turbing their order. I is an exposure shutter carrying the view finder mirror i.
Access of light to the exposed films in the well is prevented by a flap H carried
by a rock shaft h mounted within the camera, the flap being adapted, when lowered
as shown in Figure 1, to cover the entrance to the well and being operated by the
swinging movement of the magazine through the medium of a lever J (which may
conveniently form the pawl-driving lever of the indicator mechanism) pivoted
at to the side of the camera, the lever J being kept pressed by a spring (not
shewn) into engagement with a projecting rib k on the outer face of the side wall
of the magazine, so as to follow up the backward movement of the magazine which
in turn during its forward movement actuates the lever J in the opposite direction.
The lever J is coupled by means of a link with an arm h¹ on the rock shaft h,
so that on the forward movement of the magazine the flap H will be lowered whilst
on the backward movement of the magazine the flap will be raised (as shewn in
Figure 2) to allow the film and card which are then released to fall into the well G.
The flap H, instead of forming a mere cover for the well, might project down into
it sufficiently to press upon the pile of films and cards in the well.
It will be obvious that all the detents might be actuated as regards the springs
and the positive means by which those springs are overcome, in the converse
manner to that described.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what
we claim is:-
In a photographic camera the combination with a magazine adapted to swing
as described, of sets of detents adapted those of the one set to project in front of

page_text: and retain the foremost film whilst those of the other set are retracted when the
magazine is in position of exposure and adapted those of the first set to be re-
tracted so as to release said film and allow it and its accompanying card to fall
when the magazine is swung backwards whilst those of the other set are then
caused to engage with and retain the next following film and card, the sets of 5
detents being respectively operated by means substantially such as specified.
Date this 5th day of October 1898.
A. M. & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London.
A. M. & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London.