Year: 1896

page_text: Date of Application, 11th Jan., 1896
Complete Specification Left, 12th Oct., 1896-Accepted, 12th Dec., 1896
We LEONARD HOLMES, LEONARD EDWIN HOLMES and HERBERT HOLMES
trading as Holmes Brothers of 9 Pulteney Street, Barnsbury Road, N. Photo-
graphic Apparatus Manufacturers do hereby declare the nature of this invention
to be as follows:-
This invention relates to certain improvements in photographic cameras, the
object being to enable the operator to take two pictures on one plate without
altering the position of the subject, so forming and securing an entirely new
movement and effect in conical bellow cameras.
In carrying this invention into effect the bellows of the camera is secured to a
front and back frame, the back frame being hinged so as to be flat or be raised to
a position perpendicular to the bottom board of the camera, and the front frame
is attached to the bellows portion much in the usual way so that this front frame
can be extended along with the bellows and the extensible portion of the camera
bottom-board according to adjustment.
The front frame according to this invention is to be made to slide from side to
side (from left to right or vice-versa) that is to permit of the bellows occupying a
line of direction alternately (or as required) to the right or to the left of the centre
line of the camera.
We will now describe a fitting which will permit of this adjustment.
The front-frame of the extending bellows is fitted at its foot with a slide bar,
and to this tightening screws, extending upward and capped with milled heads, are
fitted, so as to enable the said bar to be tightened up to the foot of its frame as
and when required.
At the front edge of the bottom extending board of the camera (below the foot
of the front frame bar before referred to) there is a slide formed of two bars with
turned over or under cut upper edges forming a slide groove in which the bars of
the frame aforesaid can be (1) received (2) adjusted, sidewise and (3) be firmly
held in position.
To allow of the ready application of the slide bar, to the slide groove, the said
slide bar is cut away to form a gap for a portion of its length, midway and the
front bar of the slide groove is similarly cut away so that the openings, when
adjustment is to take place, or removal be effected, may be brought in such juxta-
position that the bellows frame foot bar can be slid into the groove or vice versa,
somewhat like a bayonet jointing. When the cut away portions do not in this
sense correspond to the slide bar of the extending frame will remain in the slide-
groove and by operating its tightening screws it can be securely held in position,
shutter plates are provided in the end frames of the bellow portion as required.
Dated this 11th day of January 1896.
HUGHES, ELI, & HUGHES,
76 Chancery Lane, W.C., Agents for Applicants.

page_text: атргоѵещения и глотоктарите cameras.
We, LEONARD HOLMES, LEONARD EDWIN HOLMES and HERBERT HOLMES
trading as Holmes Brothers, of 9 Pulteney Street Barnsbury Road, London N.
Photographic Instrument Manufacturers, 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 improvements in photographic cameras and has for
object to enable the operator to take two negatives, one on each half of the
sensitive plate, without altering the position of the camera and its support or the
pose of the sitter or other subject, thus obtaining an entirely new movement and
effect in conical bellows cameras, whereby the insertion into the apparatus of a
fresh sensitive plate is obviated if a second negative of the same subject in either
the same or an altered pose is desired.
In carrying this invention into practice, the bellows of the camera are secured
to a front and back frame in the usual manner. The back frame is hinged to, or
in other suitable manner connected with, the bottom board or frame, so as to be
capable of being folded down on to, or to be raised to a position perpendicular or
at right angles to, the latter. The front frame carrying the lenses, is attached to
the narrower portion of the coniform bellows much in the usual way, so that it can
be moved forward and backward together with the extensible portion of the
bottom board or frame, and, according to the present invention, it is made to slide
from right to left or vice versa so as to permit of the lenses occupying a position
and focal direction alternately as may be required to the right or the left of the
centre line of the camera and exactly opposite the respective half of the sensitive
plate contained in the back frame of the camera. It is evident that one half of
the plate as to be covered by a suitable slide or the like during the exposure of the
other half, for the purpose of protecting it from the light.
We now proceed to describe in detail the structural arrangement and the
manner in which our improvements operate, and in order that our invention may
be more readily understood and carried out in practice, we have attached hereto a
sheet of drawings upon which the nature and application of our improvements are
fully illustrated.
Throughout the different figures like letters of reference indicate like or
corresponding parts.
Fig. 1 is a perspective view of a coniform bellows camera having our improve-
ments applied thereto. The lens carrier frame is here shown fixed to the left
front portion of the extensible bottom board or frame of the camera-the opposite
position being indicated by broken lines.
Figs. 2, 24, 3, 3 and 4 illustrate details, hereinafter described, of one form of
the slideable attachment of the front frame or lens carrier to the front rail of the
extensible bottom board or frame of the camera.
Figs. 5, 6, 64 and 7 illustrate another device for effective the same movement of
the front frame.
The front frame or leus carrier a attached to the narrow end of the coniform
bellows and having at its foot a narrow plate a¹ is fitted with a slide bar or plate b,
placed below a¹ and having two rods cc attached thereto and passing upwards
through channels in the upright pillars of the lens carrier frame. The upper
portions of said rods ce are screw-threaded and provided with nuts or milled
heads e e¹, so as to enable the bar b to be tightened up to the plate a' at the foot
of frame a, as and when required.

page_text: On the upper side of the front rail d of the extensible bottom board or frame
of the camera, the barse and el, having turned-over or under-cut upper edges,
form a slide groove or guide, wherein the slide bar of the lens carrier frame can
be received and firmly secured in position by means of the tightening screws e
whereby the bars a¹ and & are caused to firmly grasp the turned-over or undereut
edges of the slide groove forming bars e and e¹ (Fig. 4). To admit of ready
insertion of the har b into the slide groove, the said bar is cut away at its front.
edge for part of its length, and the frout bar e of the slide groove is similarly cut
away (Figs. 2, 24, 3 and 34) so that the cut-away portions of, or openings in slide-
barb and groove bar e inay be brought into such relative position to each other,..
that, when adjustment is to be effected and the flush rear edge of bar b is placed
under the turned over edge of the rear groove bar e', the uncut portions of the
front edge of bar b drop into the openenings of groove bar e. When the lens
frame a is moved sideways the unent portions of the front edge of bar b engage
under the uncut portions of groove bar e and the frame can be firmly secured in
position by means of the before described screw-rods and milled screw heads c
and c. In order to limit the extent of the lateral sliding of the lens carrier a to
the length of the front rail d of the extensible bottom board or frame of the camera,..
a spring clip, depressable for the purpose of allowing the insertion of bar b into
the groove, is provided at an end of front rail d while the other end carries the
stop block g. (Figs. 2 and 34).
It is obvious that the said spring clip must be pressed down when the slide bar -
is being introduced into the slide groove, and as long as the frame a and bar b
move between clip and stop 9, the engagement of bar b and turned-over edges of
groove bars e and e' is maintained, and if removal of the lens carrier is to take
place, the process has to be reversed.
Fig. 4 shows a cross section of the different parts hereinbefore described and
illustrates the manner in which they engage with each other. This figure shows.
the section of rail d and groove bars e and e¹ taken at x y Fig. 34.
We have illustrated in Figs. 5, 6, 6 and 7 another mode of effecting the lateral
movement of the lens carrier frame a, whereby the operation is somewhat simplified
and rendered more easy to perform without disturbing the position of camera and
support relative to the subject to be photographed. In this case the hereinbefore
described purpose is attained by the application of a rack and pinion attachment to.
a laterally moveable slide or tray h which as far as the securing of the lens
carrie a in its upright position is concerned, essentially corresponds to the slide
groove formed by bars e and el in the herein before described arrangement..
The said tray or slide has turned-over or under-cut upper edges for the reception
of slide bar b and to its bottom portion a rack bar r (Fig. 64) is secured
longitudinally which, projecting downward into a channel provided in the front.
rail d of the extensible bottom board'or frame of the camera, can be marked from
right to left and vice versa by means of a centrally arranged pinion p (Figs. 5.
and 7) having a milled head projecting from the said bottom board or frame in.
such manner as to be easily workable by the fingers of the operator. The tray h
is held to front rail d by, and is adapted to slide within, a groove formed by two
bars e and el provided at the front and rear sides of the rail d and having turned-.
over or undercut edges, said edges gripping the upper rims of the tray, (Fig. 7.)
To admit of ready insertion of barb into tray h without unduly straining sideways
the bellows of the camera, part of the front edge of bar b and part of the front rim
of tray are cut away as shown in Figs. 6 and 6ª.
In order to insert and fix the bar 6 of frame a in the slide tray h, the uncut.
portions of the said bar are placed, one in the cut away portion of the tray edge,.
the other outside of the tray, bar 6 and frame a are then pushed sideways so as to
engage the uncut portions of bar b uuder the corresponding portions of the tray
edge or rim, and drawing the bar b against bar a' by means of screw rods c and.
outs el the lens carrier frame a is held in position, the said bars firmly grasping
the rims of tray h. The frame a may now be moved from right to left or vice versa

page_text: by working the rack and pinion. The lateral movement of the frame a is in this
case confined by the rack r and the length of the channel, cut in rail d, in which
the rack is being worked.
Fig. 7 is a cross section taken along line vw Fig. 5, showing the device herein-
before described and the manner in which the different parts engage with each
other.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. In photographic cameras having conical bellows, the application of a sideways
displaceable lens carrier frame a, laterally moveable within a slide or groove
formed on the front rail of the extensible bottom board or frame of the camera by
two bars secured to the front and rear sides of said rail and having turned over
or under-cut edges under which a foot bar, connected by screw rods and nuts to the
lens carrier frame and adapted to be tightened up by these means, engages,
substantially as and for the purpose hereinbefore described and illustrated in the
accompanying drawings.
2. In photographic cameras having coniform bellows, the laterally displaceable
lens carrier frame a provided with moveable foot bar b adapted to be inserted into
and moved within a groove slide, formed on the front rail of the extensible bottom
board or frame of the camera by bars e and e¹ having turned-over or under-cut
edges, the partially cut away front edges of bars b and e and the application of
spring clip and stop block g, substantially as and for the purpose set forth and
illustrated in the accompanying drawings.
3. In photographic cameras having conical bellows the laterally displaceable lens
carrier frame a provided with a foot bar b adapted to be inserted into and secured
to a tray h having turned-over or under cut upper edges and laterally moveable by
the application of a rack bar r and pinion p within a groove or slide formed on the
front rail of the extensible bottom board or frame of the camera by bars e and el
having turned-over or undercut edges, substantially as described and illustrated in
the accompanying drawings.
Dated this 12th day of October 1896.
HUGHES, ELI, & HUGHES,
Agents for the Applicants.