Improvements in Carriers for Optical Lanterns.
Year: 1893

page_text: Date of Appl cation. 21st Aug., 1893
Complete Specification Left, 21st May, 1894-Accepted, 18th Aug., 1894
PROVISIONAL SPECIFICATION.
Improvements in Carriers for Optical Lanterns.
LAMBERT MATTHEWS Gentleman Strafford House Hadley Green Barnet, and
WILLIAM WATSON Manufacturer 35 Danbury Street Islington do hereby declare
the nature of this invention to be as follows:-
The improvement in carriers consists of making a frame into which the lantern
slide is placed through an opening at the top of the said frame and is kept in
position by shaped pieces of metal or other substance fastened to a bar running
across the bottom of the said frame.
The frame is open at the front the full width of the slide to be used and the bar
across the bottom has pins fastened thereto at right angles and bent in such a
manner as to cause the said slide to be displaced when the aforesaid bar is turned
by a milled head or lever passing through the frame to either or both sides. The
bottom of the frame has a shoot fixed thereto, to allow the lantern slide to slip
down and away, leaving the aforesaid frame clear to receive another slide, which is
then passed through the opening at the top of the frame and so on in continuation.
Dated this 21st day of August 1893.
L. MATTHEWS.
WILLIAM WATSON.
COMPLETE SPECIFICATION.
Improvements in Carriers for Optical Lanterns.
We, LAMBERT MATTHEWS, Gentleman, of Strafford House, Hadley Green,
Barnet, and WILLIAM WATSON, Manufacturer, of 35 Danbury Street, Islington,
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:-
The improvements in optical lantern carriers consist in a frame into which the
lantern slide is placed through an opening at the top of the said frame and is kept
in position by shaped pieces of metal or other substance fastened to a bar running
across the bottom of the said frame.
The frame is open at the front the full width of the slide to be used and the bar
across the bottom has pins or projections substantially at right angles and bent in
such a manner as to cause the said slide to be displaced when the aforesaid bar is
turned by a milled head or lever passing through the frame to either or both sides.
The bottom of the frame has a shoot attached thereto, to allow the lantern slide to
slip down and out of the frame, leaving it clear to receive another slide, which
is then passed through the opening at the top of the frame, and so on in
continuation.

page_text: tubes, the carrier itself being attached to the base by means of a base plate v
sliding between the top part of t and inwardly projecting flanges t¹; although any
other suitable method of rigidly attaching the carrier to the lantern front may be
employed.
Figure 2 is a similar view showing the slide partly discharged from the carrier,
the dot and dash lines showing the position of the slide and parts when the slide is
fully discharged from the carrier.
Figure 3 is a front elevation of the carrier and shoot or inclined platform.
Figure 4 is a detail view of the spring f which controls the bar d in its
movement.
Figure 5 is a perspective view of the bar d with its projecting arms.
a is the framework of the carrier, with the opening in the front the full size of
an ordinary lantern slide, say 3 inches square, and provided with retaining
flanges b, b, at the back to prevent the slide from falling out in that direction.
The frame has an opening c at the top through which the slide is passed into
position. The bottom front portion of the frame is cut away to facilitate delivery
of the slide, as shown in Figures 1 & 2 at a¹.
The slide does not rest upon the bottom bar of the carrier, but upon a metal
rod d (with a flat top) which extends through the frame from side to side, it being
.controlled in its movements by means of the spring f, (see Figure 4) or similar
means may be employed to keep the rod normally with its flat side in a horizontal
position. To the other end of this rod d, outside the carrier frame is attached an
upwardly extending rod or bar g. To the rear side of the bar d we attach a
projection or pin, or projections or pins h, h, in such a manner as to cause the
slide to be pushed off the bar when it is partly revolved; or we may employ a
flanged bar.
In order to partly revolve the bar d, and consequently displace the slide from its
position on the bar, we provide a haudle, or milled head 7 on the side of the
frame a, to which is attached a downwardly extending rod or part m.
It will be observed that the vertical rods p, p, attached to the rod d serve to
prevent the slide from falling forward when placed in the carrier frame, by reason
of the ends p³, p', pressing against the front edges of the slide, the lower
portions p, p being bent outward, so as to permit the slide to pass through freely,
when desired.
A slide having been inserted in the carrier frame a, through the opening c, will
rest upon the bar or rod d. When it is desired to change or discharge the slide,
the handle or milled head is partly revolved causing the rod m to strike against
and move the rod or lever g forward, thereby turning the bar d causing the
retaining rods p, p, to move forward also, releasing their pressure on the slide, the
slide then slips off the bar d, being aided in this by the pins h, h, forcing it forward
into the shoot, (which may be constructed of millboard or other suitable material)
or, it may be, on to curved rods or bands attached in any suitable manner to the
bottom of the frame and resting on the base of the lantern front.
The spring f
serves to return the bar d to its normal position.
Stops w, w are provided to limit the movement of the rods m and g.
Whilst we have shown our carrier as applied to a particular form of lantern, it
will be readily understood that it can be used with any lantern having an open, or
partly open, front.
It will be readily understood that the changing of the slides can be performed
by simply turning the rod d by means of a milled head or handle, such as d
(Figure 3) placed at either end or both ends of the said rod, stops being provided,
if necessary, to limit the extent of rotation of the rod.
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. An optical lantern slide carrier consisting of an open frame, and bar provided

page_text: with retaining rods, and means whereby such bar may be rotated, so that when
partly rotated the slide will be displaced from the carrier, substantially as
described.
2. An optical lantern carrier consisting of an open frame a, bar d provided with
retaining rods p, p, and pins h, h, in combination with means for effecting the
partial rotation of the bar d, substantially as shown and described with reference
to Figures 1 and 2.
3. An optical lantern slide carrier in which the slide is caused to be displaced
and delivered out from the lower part of the frame onto a shoot or inclined.
platform, substantially as set forth.
Dated the 1st day of Mar 1904
STANLEY G. S. DICKER,
Agent for Applicants.