An Improvement in Carriers used for Holding Slides in Magic Lanterns.
Year: 1892

page_text: Date of Application, 27th Jan., 1892
Complete Specification Left, 26th Sept., 1892-Accepted, 3rd Dec., 1892
PROVISIONAL SPECIFICATION.
An Improvement in Carriers used for Holding Slides in Magic
Lanterns.
HENRY GRANT MADAN CONYBEARE of The Hut, Ingatestone, Essex Gentleman:
of independent means do hereby declare the nature of this invention to be as-
follows:-
A frame A into which the lantern slides are placed, through openings at the top,.
this frame slides through a frame B.
The frame B is recessed at the top and bottom as shown by dotted lines F. G..
The frame A has two holes through it as shown at C in which are placed loosely
fitting rods H. The lower ends of these rods act on levers D which levers are.
pivotted at E.
When the frame A is moved to one end of the frame B so that one of openings
in the frame A corresponds with the opening in the frame B, the sloping end of
the top recess in the frame B depresses one of the rods, which actuates its lever &
thereby raises the lantern slide partly out of the frame A.
In like manner when the frame A is moved to the other end of the frame B so.
that the other opening in the frame A corresponds with the opening in the frame B,.
the other rod and lever are actuated and the lantern slide in that end of the frame A.
is in turn partly raised from the frame.
Dated this 27th day of January 1892
H. G. M. CONYBEARE.
COMPLETE SPECIFICATION.
An Improvement in Carriers used for Holding Slides in Magic
Lanterns.
I HENRY GRANT MADAN CONYBEARE of The Hut, Ingatestone in the County
of Essex, Gentleman of independent means 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 improvements in lantern slide carriers such as those
used for holding slides in optical or magic lanterns and has for its object the
provision of means whereby the lantern slides may be ejected from the carrier,.
automatically by, and simultaneously with, the movement of slide within its frame,
in its operation from side to side, thus greatly facilitating the manipulation of the
said slides when changing and obviating the necessity of handling the slides so-
that the fingers come in contact with the faces of the slide and thus soil them.
My invention is essentially an improvement of the invention described in Letters
Patent No. 20972 and dated 23rd December 1890 and consists in the application
to such a sliding carrier of means for the automatic operation of the ejecting
lever by the sliding movement of the carrier.
In order that my invention may be the better understood I will now proceed to
describe the same in relation to the drawings hereunto annexed reference being
had to the letters and figures marked thereon. Like letters refer to like parts in
the various figures.
Figure
invention.
is a part sectional view of a lantern slide carrier according to my
Figure 2 is a modification of the same.
In carrying out my invention I provide a carrier A into which the lantern.

page_text: slides B are inserted through openings Cat the top of the frame A. This slide
carrier A is adapted to slide in a suitable frame D. I pivot a lifting lever E on
each side at e to serve the two slide spaces. The back end of each lever E as
shewn in Figure 1 is operated by a pusher rod F.
The underside of the top part of the frame D is recessed along its centre portion,
such recess terminating at each end by an inclined plane G against which the end
of the pusher rods F can engage; the recess is made deep enough to allow the
pusher rods to move high enough for the end of the lever E to occupy the lowest
position when the lantern slide B is resting in proper position in the frame for
projection.
When now the slide carrier A is moved toward one end of the frame D, so that
one of the openings in the carrier A with its slide B corresponds with the opening
in the frame D, the inclined plane G at one end of the recess in the upper part of
the frame D engages the end of the pusher rod F, depresses the shorter end, raises
the longer end of the lever, and lifts the slide B into such a position as to allow
of being taken hold of by the hand for removal from the carrier, upon which a
new slide can be inserted. The carrier can then be slid along so as to register
the new slide in position and the slide previously being shown is ejected partially
from its position at the other end of the slide carrier.
A suitable recess may be formed in the lower portion of the frame D to
allow room for the movement of the levers E if thought desirable.
In Figure 2 I show a modified construction in which I dispense with the pusher
rods F and pivot the levers E at their extreme inner end. I form a projection or
bend H in each lever by which it is operated. This operation is effected by forming
the recess with inclined planes G upon the bottom of the frame D so that the
projection or bent piece H of one of the levers E engages with the inclined
plane G at one end, operates the said lever E and lifts the slide B.
The faces of the inclined planes may be sheathed with a hard material such as
metal as shewn in Figure 1 to resist the wear as far as possible.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1st. In a lantern slide carrier, a sliding frame having lifting levers pivoted
thereon in combination with means for the operation of the said levers during
and by the sliding movement of the slide carrier.
2nd. In such a lantern slide carrier a pivoted lifting lever in combination with
an inclined plane upon the frame in which the slide carrier moves and adapted
to engage with the said lever to effect the lifting of the lantern slide, substantially
as described.
3rd. The construction and arrangement of a lantern slide carrier, substantially
as described and illustrated in Figure of the accompanying drawings.
4th. The construction and arrangement of a lantern slide carrier substantially as
described and illustrated in Figure 2 of the accompanying drawings.
Dated this 19th day of September 1892.
H. G. M. CONYBEARE.