Improvements in Carriers for Lantern Slides.
Year: 1890

page_text: Date of Application, 23rd Dec., 1890
Complete Specification Left, 23rd Sept., 1891-Accepted, 31st Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Carriers for Lantern Slides.
We, REGINALD WILLIAM JAMES. of 75, Tyrwhitt Road, Brockley,, Civil
Engineer and MALCOLM STODART of 35, Tyrwhitt Road, Brockley, in, the
County of Kent Gentleman do hereby declare the nature of our invention to. be
as follows:-
Our invention relates to improvements in lantern slide.carriers such as those used
with optical or magic lanterns; and consists in the provision of means whereby the
lantern slides may be partly or wholely ejected from the carrier thus greatly
facilitating the manipulation of the said slides when changing and obviating, the
necessity of handling the slides so that thelfingers come in contact with the faces of
the slide thus soiling them, the said soil marks appearing magnified on the screen
and giving the picture a very foggy and unsatisfactory appearance.
We carry out our invention by arranging upon the ordinary sliding frame which
carries the lantern slide, an ejecting mechanism which may consist of a lever with
unequal arms pivotted preferably in the lower part of the frame, the long arm of
the said lever reaching to about the centre of the space occupied by the lantern
slide, and the short arm. being adapted to be operated by hand direct from the
exterior or by means of a pusher extending from the top of the slide frame.
When it is desired to withdraw a slide from the frame, a small amount of finger
pressure on the pusher or on the small end of the lever direct causes, the slide to be
raised by the long end of the leveria considerable distance out of the top of the
frame, and enables the operator to grip the said lantern slide on its edges, and
wholely extract it from the carrier, thus obviating the necessity of bringing the
fingers in: contact with the faces of the slide.
It is obvious that the same result may be effected by means of a. sliding,lifter
having a hooked end which shall engage under the lower edge of the lantern slide,
in such a manner as to lift the slide with it.
ላሳ
1000
R. W. JAMES,
MALCOLM STODART,
75, Tyrwhitt Road, Brockley, Kent.
COMPLETE SPECIFICATION.
Improvements in Carriers for Lantern Slides.
We, REGINALD WILLIAM JAMES of 75 Tyrwhitt Road, Brockley, Civil
Engineer and MALCOLM STODART of 35 Tyrwhitt Road Brockley in the:County
of Kent Gentleman do hereby declare the nature of our 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 improvements in lantern,slide,carriers.such, as those used
with optical or magic lanterns, and consists in the provision of means whereby the
lantern slides may be partly or wholely ejected from the carrier 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 thus, soiling them the said soil,marks appearing magnified on the screen
and giving the picture a very foggy and unsatisfactory appearance.

page_text: In order that our invention may be the better understood we will now describe it
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.
Fig. 1 is a side elevation of a lantern slide carrier with our invention fitted
thereto shewing the lever in its lower' position.
"
Fig. 2 is a sectional elevation Ishowing the lever in its upper position with the
slide lifted ready for withdrawal.
13
Figs. 3 & 4 show modifications of the lever dispensing with the pusher, rod.
Fig. 5 is a view of a lifter without any hinge.
We carry out our invention by arranging upon the ordinary sliding frame A
which carries the lantern slide B an ejecting mechanism by which the slide B'can
be partly or wholely ejected from the carrier.
..
This mechanism can be arranged in many equivalent ways without departing
from the essence of this invention, we will describe a few methods by way of
example..
.3 In Figs 1 and 2 we show it in the form of a double lever. C. unequally.hinged
at Daupon or within the frame A the long end E of the said lever being adapted
to engage with the bottom edge of the lantern slide: B.
The short end of the lever. C engages with the lower end of a pusher rod G
mounted upon the frame 'A so as to slide therein.
When the top of the pusher. rod G which projects above the upper edge of the
sliding: frame A is pressed by finger pressure, (preferably, the middle finger,).the
short end of the lever C is depressed and the long end E raised together with
tlie-slide which protrudes from the top of the sliding frame A and can be grasped
upon its side edges by the 1st finger and thumb of the same hand.
It is shewn lifted in Fig. 2.
In Figs 3 & 4 the lever C is practically the same as shewn in Figs. 1& 2, the
only difference being that the pusher rod is dispensed with:
The lever C.in Fig. 3 is provided with a handle H that reaches to the top of
the frame by which-it can be operated.
"
In Fig. 4 a finger piece I is only arranged on the short end of the lever for
the purposes of operating it.
.I
"
Thesetare not such good arrangements as thai: shown in Figures 1&2,as two
hands are required to effect the changing of a slide.
--In-Fig.-5-we-shew-a right angled lifting picce. K having its ends,adapted to
slide in the grooves upon the frame A in which the slide is held.
A handle Mis attached to the lifter K by which it can be manipulated.
The lower ledge. N engages on the under side of lantern slide B and lifts the
same on it being raised.
It is quite obvious that in either case the slide may be withdrawn from the side
carrier without bringing the fingers into contact with the faces of the slide and
thus avoid soiling the transparent part of the slide.
Having now particularly described and ascertained the nature of our inven-
tion and, in what manner the same is to be performed, we declare that what we
claim is:
1st. In a lantern slide. carrier a sliding frame in combination, with an ejecting
mechanism.
2nd. In such a lantern slide carrier an ejecting mechanism consisting of a lever
pivotably supported on the sliding frame and. adapted at one end to engage with
the lower edge of the slide and at the other end for the application of finger
-pressure substantially as described.
3rd. In such a lantern slide carrier a double ended lever pivotably supported
in the sliding frame adapted to engage the lower edge of the slide at one end in
combination with a pusher rod adapted to engage. with the other end of the lever
substantially as described.

page_text: 4th. The arrangement and construction of a lantern slide carrier substantially
as described and illustrated in and by the accompanying drawing.
Dated this 23rd day of September 1891.
REGINALD WILLIAM JAMES.
MALCOLM STODART.