Improvements in Apparatus for the Exhibition of Photographic Pictures, Advertisements, and the like.
Year: 1888

page_text: Date of Application, 1st Oct., 1888
Complete Specification Left, 1st July, 1889-Accepted, 17th Aug.. 1889
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for the Exhibition of Photographic
Pictures, Advertisements, and the like.
I, JOHN TAYLOR LEIGHTON, of No. 18 Montgomery Street, Edinburgh, Gentleman,
do hereby declare the nature of this invention to be as follows:-
:-
My invention relates to improved means for the exhibition or display in
succession of Photographs, pictures, advertisements and the like, which being
mounted upon suitable frames, are by the rotation of a handle brought successively
into view.
The improved apparatus or appliance according to my invention comprises an
enclosing box or frame, divided into three compartments or divisions, the central
one of which is shallower than the others, but of sufficient depth to allow of the free
passage of the frames. At the top and bottom of the enclosing box, are fixed
horizontally, four grooved or slotted plates, two at the back and two at the front,
within which grooves, move horizontally and parallel to each other, four slides, each
provided with a loose projecting clutch or pawl, which latter may, under some
circumstances, be held in position by means of springs or equivalents. The two
front and two back slides aforesaid are connected respectively to two vertical bars
arranged within one of the lateral divisions or compartments above referred to.
Said vertical bars have longitudinal slots formed therein, in which slots take the crank
pins of two adjustable revolving arms, the rotation of which is effected by means of
à knob or handle fitted upon the exterior of the enclosing case; thus, upon
rotating said handle, a to and fro motion is imparted to the vertical bars and its
attachments.
The frames above mentioned are formed of any suitable material and provided on
one or both sides, as may be desired, with clamps or grooves for holding the
articles to be exhibited or exposed to view. In a convenient position -on the top and
bottom of the frame and front and back, are formed slots, perforations or recesses
with which engage the, loose clutches or pawls fixed to the slides aforesaid. The
vertical edges of said frames are bevelled in such a manner that in the forward.
movement of one frame, it may pass in front, or to the rear of the next succeeding.
frame.
The action of the improved apparatus according to my invention is as follows:
upon rotating the knob or handle, the arms aforesaid on which are fitted the crank!
pins are rotated in unison therewith, by which means, as above described, the
vertical bars and horizontal slides have a reciprocating motion imparted thereto. In
the forward movement the loose clutches or pawls of the back slides engage with
the perforations or recesses in the back plate of the frame, impelling it forward
from the centre division into the outer or third lateral division or compartment. In
its return the clutches aforesaid are capable of sliding over the preforations or.
recesses in the back of the frame, but the clutches on the front sides, now engage
with the recesses in the front of the frames, and by means of the bevelled edges,
withdrawing the frame to a rearward position in the central compartment or
division.
In addition to the clamps or grooves in the frames, small springs may be employed
o retain the articles to be exhibited in position, and prevent displacement during the
o and fro niotion above described.
The enclosing box may be of any suitable design, ornamental or otherwise, and
may be provided with a magnifying lense inserted in a collar attached to the front of
he hox

page_text: In cases in which the frames are intended to carry two Photographs or other
articles, the back of the enclosing box is provided with an opening, similar to that in
the front, and may similarly be provided with a magnifying lense, thus allowing
double the number of articles to be exposed to view than when the front only is
utilised.
Thated this Truante ninth da
tembar 1000
Gray's Inn Chambers, 20, High Holborn, London, W.C., Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for the Exhibition of Photographic
Pictures, Advertisments, and the like.
I. JOHN TAYLOR LEIGHTON of No. 18 Montgomery Street, Edinburgh, Gentleman,
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 :-
My invention relates to improved means for the exhibition or display in
succession of photographs, pictures, advertisments and the like which being
mounted upon suitable frames are by the rotation of a bandle brought successively
into view.
In order that my invention may be thoroughly understood I have appended the
accompanying drawings.
Figure 1. is an exterior view of one form of my apparatus, which allows of only
one photograph or other picture being exhibited at a time.
Figure 2. is an elevation of the enclosing box or frame showing the interior
arrangements and mechanism.
Figure 3. is a horizontal section of the enclosing box or frame along the line A B
Figure 2.
Figure 4. is a side elevation of the apparatus, with front elevated for the insertion
of the photograph frames or holders.
Figure 5. is a plan on an enlarged scale of mechanism for actuating the slides or
frames.
Figures 6 and 6B are views on an enlarged scale of the clutches attached to the
front and rear slides or frames.
Figures 7, 8, 9 and 10 are views of the frames for holding the photographs or
other pictures; Figures 8 and 9 views of a holder for one photograph and Figure 10
for two photographs.
Figure 11 is a view of the rear slide or frame constructed to carry two photographs,
one above the other; and Figure 12 shows a holder adapted for the same; and
Figures 13 and 14 are similar views of a modified arrangement for displaying two
pictures side by side.
With a view to render the nature of my Improvements more apparent I will
describe my invention arranged as an apparatus in which only one photograph or
other picture is exhibited at a time. It consists of an enclosing box or frame A,
divided into three compartments or divisions B, B1, B2, the partition between two of
these B, B¹, being cut away sufficiently to allow of a passage of the photograph
frames or holders hereinafter referred to. At the top and bottom, are fixed
horizontally four grooved or slotted plates D, Figures 2 and 3, two at the back and
two at the front, within which grooves move four slides C, C, each provided with a
loose projecting clutch or pawi E, E as will be understood by reference to Figures 2.
and 3. The clutches are kept in their normal position by means of springs when the
apparatus is vertical, and by their own weight, assisted if necessary by springs, when
the apparatus is inclined. The clutch E in the front slide or frame C acts in the
reverse direction to the clutch E' in the rear slide or frame C. The two front and
two back slides are connected to two vertical bars F, F¹; one bar F¹ has cut in it

page_text: a slot in which slot take the adjustable crank pins G, Figures 2 and 5, of two
arms or cranks HH, the rotation of which is effected by means of a knob or handle I
and bevel-wheels I' 1, so that on rotating said knob I a to-and-fro motion is imparted
to the vertical bars and their attachments.
The frames or holders J, Figures 7, 8, 9, 10, 12 and 14, for the photographs or
other pictures are formed of any suitable material and provided on one or both sides
with clamps or grooves K for holding the articles to be exhibited or exposed to view.
In a convenient position on top and bottom of the holder and front and back of the
latter are formed slots or perforations L which may be formed separate or through
and through, as shown, with which engage the loose clutches or pawls E E' fixed to
the slides C, C. The vertical edges of said holders are bevelled in such a manner
that in the forward movement of one holder it may pass in front or in the rear of the
next frame or holder.
In the modified arrangement shown by Figure 13 it is necessary to provide two
holders for each slide or frame, which holders are formed, as shown, like those used in
the apparatus for exhibiting one picture at a time.
To the vertical bar F of the back slide (I attach a metal tongue a Figure 11
which serves to prevent the holders from passing from one division to the other
when the apparatus is laid upon its face and then lifted on one side, the tongue by its
own weight dropping between the two divisions.
The action of the improved apparatus according to my invention is as follows:-
It is necessary to have an odd number of photographs or the like, and in the
description it is assumed that there is at first one more in the central compartment
than in the outer one.
Upon rotating the knob I the arms H, on which are fitted the crank pins adjustable
by means of slots and nuts are rotated in unison therewith, by which means the
vertical bars F F and horizontal slides C C¹ have a reciprocating motion imparted to
them. In the forward movement, the loose clutch or pawl E¹ of the back slide C³
engages with the perforation or recess L in the back of the rearmost holder J in the
central division B-which I will, for the sake of rendering the explanation more
clear, call "impelling it forward from the central division into the outer com-
partment B. In returning the clutch E¹ aforesaid is capable of sliding over the
perforation L in the back of the holder "x," but the clutch E in the front slide C now
engages with the recess L in the front holder in the outer compartment-which I will,
for the above named reason, call "y"-and owing to the bevelled edge / draw it into
the central division B', thus exposing it to view.
"
The next rotation of the knoh will cause the holder which was (in the central
division) in front of the holder "x" to be impelled forward into the outer compart-
ment, and that holder which was (in the outer compartment) in rear of the holder "y"
to be drawn into the central division. Thus it will be seen that the holders are trans-
ferred from the central division into the outer compartment and returned to the
central division when their turn comes, whilst those originally in the outer compart-
ment are likewise returned to the outer compartments by the same means, namely
continuous rotation of the knob. By this arrangement a complete succession of the
views is effected.
. In addition to the clamps or grooves in the holders aforesaid small springs may be
employed to retain the articles in their position and prevent displacement during the
to-and-fro movement.
I prefer to place the enclosing case in a container of any suitable design ornamental
or otherwise, as shown in Figure 1 where the enclosing case is shown in dotted lines.
Such container may be provided with a magnifying lens, on a hinged arm or stand
separately at proper focal distance.
In cases in which the photograph holders are intended to carry two photographs as
illustrated by Figure 10, the back of the container aforesaid (which is then preferably
upright) is provided with an opening similar to that in the front and may be provided
with a magnifying lens, thus allowing double the number of articles to be exhibited
to view than when the front only is utilised.

page_text: I may employ an electric or other motor or clockwork for actuating the bevel wheels,
replacing the knob by a pulley. As will be seen from Figures 11, 12, 13 and 14 I
may considerably vary the arrangement of my invention without departing from the
essential features thereof. In these modified arrangements the number and disposition
of parts, the construction of the photograph holders, and the arrangement of the
lenses or glasses will have to be varied to accord with the particular arrangement
ohosen, but I employ the same means and apparatus for imparting a reciprocating
motion to the slides aforesaid so as to bring the photographs or the like successively
into view.
Having now particularly described an 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.
First-The improved apparatus for the exhibition of photographic pictures,
advertisements and the like substantially as and for the purposes described.
Second-The mechanism for giving the reciprocating motion to the slides sub-
stantially, as described and illustrated by Figures 2 and 5 of the accompanying
drawings.
Third-The arrangement of apparatus described in reference to and illustrated by
Figures 1 to 4 of the accompanying drawings.
Fourth-The modified arrangements described in reference to and illustrated by
Figures 11, 12, 13 and 14 of the accompanying drawings.
Dated thi
JAMES STEVENSON,
Gray's Inn Chambers, 20, High. Holborn, London, W.C., Agent for Applicant.