Year: 1886

page_text: amagi
I, WILLIAM CHARLES HUGHES of Brewster House, 82 Mortimer Road, Kingsland
Road, London, N. Optician, 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 object of my invention is to ensure, almost instantaneously the change of
each picture, representation, or subject projected upon the screen, used in con-
nection with a Magic Lantern, and without said operation of changing being
observable or noticed by those before whom the Magic Lantern is shown.
In order that my invention may be the better understood, I have appended the
accompanying sheet of drawings in which Figure 1, is a side elevational view.
Figure 2, an end view. Figure 3, a part plan, and Figure 4, a section on line A, B,
Figure 2 of the apparatus according to my invention.
In accordance with my invention the frame A for containing the picture, and
hereinafter designated the "Picture Frame" is arranged and operated, or worked so
as to allow of same being either entirely rotated or of having a reciprocatory motion
imparted thereto in a circular path. Said Picture frame is provided with
cylindrical pins B, B' on each side, which are carried and worked in corresponding
bearings C, C¹.
To allow of the "Picture frame" aforesaid being wholly, or partially (as the case
may be) rotated in order to permit of a fresh picture being shown, I adopt the
following devices. or arrangement of mechanism, and operated in the manner
hereinafter described. The axial pin B, is fitted at the outer end with a disc D,
having therein a vertical slot E; into this vertical slot takes one part F, of a
compound detent G, mounted on an axis at a. Now, whilst the part F, of the
detent aforesaid, remains inserted in the slot E, of the disc aforesaid, the "Picture
frame" A, is held rigidly in position. The compound detent G, has wing
pieces g, g', which wing pieces, on the depression of the detent aforesaid, come in
contact with arms b, 61, connected to spring catches I, I, and release a pin K, thus
allowing the "Picture frame to be rotated. The shutter lever L, which works in
a slot H, to keep same in a central position, on the depression of the detent G,
rises at j.
"

page_text: At the end of the lever L, and in front of the Lantern lens N, I provide as will
be seen on reference to the drawings an arrangement of toggle jointed levers, the
two lower members of which form a pair of semicircular discs or shutters M, M³,
pivoted as shown in the drawings at P. On the depression of the detent aforesaid,
one end G, comes in contact with the end h, of the lever L, and the other end j,
lifts or closes the toggled levers, thus shutting off the light from the screen whilst
the "Picture frame" is being rotated, in order to bring another picture into view,
in which position it is kept by the part F, of the detent G, aforesaid, riding upon
the surface of the disc D, and in this position it is retained until the "Picture
frame" A, has completed a half revolution, when the slot E, aforesaid, being then
in a vertical position, allows of the part F, of the detent to fall therein, thus
releasing the lever L, upon which the shutters M, M¹, drop and open, allowing of
the projection of the picture upon the screen; the operation being then completed,
and the "Picture frame" is ready to receive another picture, and so on.
Thus as will be apparent, by the one action of depressing the detent G, the
action of closing and opening the shutters M, M¹, and the revolving of the "Picture
frame" A, are simultaneously and instantaneously effected.
I wish it to be understood that, referring to the view Figure 4, in the accom-
panying sheet of drawings, I am enabled by means of my invention to allow of the
improved "Picture frame" taking either a 4 inch, or a 4 inch slide; the 4 inch
slide being carried in the recess d, d¹, and the 4 inch slide, between the top and
central portions e, e¹, of the "Picture frame" A,
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
First: The rotating or partially rotating or reciprocating frame A, operated
substantially as herein set forth.
Second: The means employed for working the shutters M, M', substantially as
berein set forth and as shown in the accompanying drawings.
Dated this Nineteenth day of July 1886.