An improved magazine Camera.
Year: 1897

page_text: Date of Application, 2nd Apr., 1897
Complete Specification Left, 31st Jan., 1898-Accepted, 5th Mar., 1898
FRANK GREEN, 91, Queen Street, Exeter, Tailor, & JOHN HINTON LAKE, Phar-
maceutical Chemist, 41, High Street, Exeter, do hereby declare the nature of this
invention to be as follows:-
The plates or films are carried in ordinary sheaths except that each sheath
carries two plates back to back (although this is not necessary). At the top and
bottom of each side of the sheath projects a
pin a short distance. The sheaths
are placed in a cradle which is so arranged that the pins of the sheaths project
over the sides of the cradle about of an inch. This cradle slides in a groove
which is made in each side of the camera near the bottom. Just above the cradle
is an inclined plane which, for a short distance slides independent of the cradle,
this inclined plane lifts a lever on each side of the camera by which means the
sheath is lifted out of the cradle. The cradle then moves forward causing the lever
to cant and turn the sheath over securing it to the cradle by the pins at the
bottom, behind the other sheaths leaving the next plate ready for exposure.
Dated this First day of April 1897.
F. GREEN.
JOHN HINTON LAKE.
An improved magazine Camera.
We, FRANK GREEN, of 91, Queen Street, Tailor, and Joux HINTON LAKE, of
41, High Street, Pharmaceutical Chemist, both in Exeter, in the County of Devon,
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:-
Our invention relates to photographic cameras of the kind adapted to contain a
series of plates parallel with the plane of the lens and provided with mechanism
for successively bringing the several plates into position for exposure and removing
them after exposure, the object of our invention being to provide improved
mechanism for moving the plates.
According to our invention the plates or films which are mounted in frames or
sheaths either singly or in pairs are carried in a cradle by means of pins projecting
from the ends of the sheaths and levers operated by cams or inclined surfaces are
provided for lifting the sheath at one end of the series of sheaths, moving it over.
the top of the said series and again placing it in the cradle at the other end of
the series

page_text: .
10 enable our invention to be fully understood we will describe the same by
reference to the accompanying drawings, in which :—
Figure 1 is a longitudinal sectional elevation of so much of a photographic
camera as is necessary to illustrate the application of our invention thereto; and
Figure 2 is a sectional plan of the same;
Figure 3 is a transverse section; and
Figure 4 is a view similar to Figure 1 illustrating the application of the
apparatus;
Figures 5 and 6 are respectively an elevation and an edge view or plan of one
of the sheaths or plate carriers; and
Figure 7 is a section on the line 7-7 of Figure 5.
a is the camera box having the lens mount a², and b, bare two uprights con-
nected by a bar c and capable of moving in a longitudinal direction within the
camera the said uprights as shewn being provided with flanges d, d sliding in the
grooves e, e on the sides of the box a the said uprights with the connecting bar
and flanges forming the cradle.
ff to f are the several plate sheaths or frames supported in the said cradle;
each of the said sheaths is provided with laterally projecting pius y, g, y², g¹ (as
clearly shewn in Figures 5 and 6) which, when the sheaths are in position project
beyond the uprights b, b of the cradle.
h, h are the lifting levers at each side of the camera each of the said levers being
pivoted to a slide working in guides j, j which lovers are designed to engage
with the projecting pins g or g' of the foremost sheath lying in the cradle and to
lift the said sheath from the front of the series of sheaths and to move it to the
back of the said series, the sheath during its movement from the front to the
back being turned over so that assuming when in the front of the series of plates
it was supported by the pins g, g it will at the back of the series be supported by
the pins g, g. This arrangement of turning over the sheath has the advantages
that it permits of two plates being arranged back to back in the same sheath, and
that it enables the plates to be changed in much less space than would be the case
if they were retained in a vertical position during the moving operation.
k, are the cam surfaces or inclined planes which act against rollers 1, I mounted
at the lower ends of extension arms m, m on the slides i, i the said cam surfaces
being carried by a frame n sliding in the sides of the camera box a, for instance
in grooves o, o as shewn in Figure 3, the said frame n being arranged in such
relation to the cradle that it has a certain amount of movement independently of
the latter but that beyond this movement the cradle is also moved. The levers h, h
at their upper ends are each formed with a notch to engage with the pins of
the sheaths and at the other end are provided with weights h, which normally
tend to retain the notched ends of the levers in contact with stops y, 9 on the
uprights b, b, that is to say, in a position in which the notches p are immediately
beneath the pins y, g of the foremost. sheath of the series of sheaths, the position
of the foremost sheath being determined by the tongues or projections b³, 6' on
the uprights b, b. The lower end of the foremost sheuth is, when the frame n is
pushed inwards to its normal position and when the cradle is also in the normal
position, that is to say, the position which it occupies during the exposure of the
plates, pressed upon by one of the bars of the frame n, as clearly shewn in Figure 1,
the series of sheaths being thus kept in contact, the back sheath being supported
by a stop r. n is a rod through the medium of which the frame n is moved.
s, are cam surfaces formed upon the uprights b, b of the cradlo which cam
surfaces are designed to co-operate with luga or projections s', s, Figure 3, upon the
lower ends of the levers h in the manner hereinafter described.
The extension arms m, m of the slides i, i are made of spring metal and upon
the com surfaces k, k are formed the inclines t, which when the frame n is moved
in one direction spring the arms m, m laterally so that the rollers (, / carried
thereby do not run upon the cam surfaces k, k but pass the same without operating
tho levers h, h.

page_text: -
In
The operation of the apparatus hereinbefore described is as follows:-
Assume the parts to be in the position shewn in Figure 1, that is to say, in the
position in which the front plate of the series is in position for oxposure, in
which position of the parts the frame n carrying the cam surfaces k, k is at its
rearward position and has its front bar pressing against the bottom edge of the
foremost sheath of the series whilst the rearmost sheath is against the stop r.
order now to remove the sheath f to the rear of the series the rod is pulled
outwards so that the frame is moved to cause the cam surfaces k, k to act upon
the rollers, 1, and lift the slides i, i and consequently also the levers h, h with the
plate f which they carry; during this lifting movement the lugs s', on the
fevers, hare running upon the cam surfaces 3, and so keep the levers h, h in a
vertical position. When the said levers h, have reached the position indicated
by the dotted lines in Figure 1 the rear part of the frame a has reached the cradle
BO that the continued movement of the frame also causes the forward movement
of the cradle itself. This forward movement of the cradle causes it to press against
the sheath which is suspended from the levers h, h and to swing it upwards.
When the frame n has reached a certain position, in its forward movement the
cam surfaces k, k pass from beneath the rollers 1, so that the slides i, i are free
to drop; the sheathi f, however, does not drop owing to the fact that it is not evenly
balanced upon the top of the rearmost sheath f, more than half the plate being
towards the front of the camera; as, however, the forward movement of the
frame n is continued the cam surfaces s, s on the cradle act upon the lugs s', s' of
the levers and tilt the said levers to about the position indicated by the lines
at in Figure 4 in which position of the levers the sheath has been moved so
far over the top of the series that its weight causes it to drop out of the notches
in the levers h, h and to fall into the cradle at the back of the series of sheaths,
the pins g coming into contact with the horns b³, 12. The said plate as it falls
at the back of the series of plates pushes the others forward so that the sheath fi
now becomes the foremost, the sheath f which was formerly the front one being
at the back. In order to facilitate the movement of the several sheaths in the
cradle owing to the fall of a sheath as hereinbefore described the surfaces upon
which the pins of the sheaths run is preferably inclined as shewn in Figures 1
and 4.
On the return movement of the parts the inclined surfaces t, t upon the cam
pieces, press the extension arms m, m of the slides i, i laterally so that the
frame with the said cam pieces moves back to its normal position without again
lifting the alides i, i. During the first part of the backward movement of the
frame n no movement is imparted to the cradle. When, however, the front bar
of the said frame n reaches the cradle the latter is moved backward with the said
frame until the rearmost sheath comes against the stop r.
With this arrangement hereinbefore described it will be observed that the
position of the sheaths is reversed, that is to say, what was the back of a sheath
when at the front of the series is the front of the sheath at the back of the series,
this arrangement permitting of two sensitized plates being used in the same sheath
so that a camera having six sheaths will be capable of holding 12 sensitized plates.
It is to be understood, however, that if desired each sheath can be adapted for
holding a single plate only. When we use sheaths intended for carrying two
plates, the said sheaths must be of such construction that as the cradle is pulled
under the uplifted plate in the manner hereinbefore described, the sensitized
surface of such uplifted plate will be out of contact with the sheaths to prevent
it from becoming scratched or otherwise injured during the moving operation.
This can be effected by arranging the pins 9, 9, g', g¹ above the edges of the
sheaths as shewn in Figures 5 and 7 so that spaces or clearance spaces 1, 2 are
formed.
v, v are springs upon the sheaths for holding the sensitized plates in position
therein.
It will be obvious that instead of arranging the operating rod n' at the front of
the camera it may be arranged to project through the back of the same, and also

page_text: that instead of moving the front plate of the series after exposure to the back of
the series, the back plate of the series may be placed before the last exposed plate
and thus become the front plate of the series. That is to say, the apparatus can be
worked with the lens at either end of the camera.
Although we have described our invention as applied to a camera, it is to be
understood that it is also applicable to a changing box.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:-
1. In a magazine camera or changing box a cradle for carrying a series of
frames or sheaths for sensitized plates or films parallel with the lens and means
for successively moving the said sheaths from the front of the series to the back
and during such movement reversing their position, substantially as described.
2. In a magazine camera or changing bos, the combination of a cradle adapted
to support a series of sensitized plates or films in sheaths or carriers, levors for
lifting the front plate of the series, cam surfaces for operating the said levers to
effect the lifting and means for moving the cradle beneath the lifted sheath and
then allowing the latter to turn over and drop, substantially as described.
3. The manufacture and use of the improved camera, hereinbefore described and
illustrated in the accompanying drawings.
Dated the 31st day of January 1898.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.