Improvements in connection with Projecting Lanterns.
Year: 1897

page_text: Date of Application, 7th Jan., 1897-Accepted, 13th Feb., 1897
Improvements in connection with Projecting Lanterns.
I, WILLIAM CHARLES HUGHES of Brewster House, Mortimer Road Kingsland,
in the County of Middlesex, Manufacturing 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 :-
My invention has for its object to provide a lamp adapted to impart a light of
intense brilliancy for use in connection with projecting lanterns, and which in
combination with an improved condensor of small diameter and short focus may
operate to concentrate the light more directly upon the picture to be projected,
which renders my invention particularly adapted for use in connection with
cineamatoscopes.
In order that the combination constituting my invention and the manner in
which I purpose to arrange and operate the same may be clearly understood, I
have hereunto appended a sheet of drawings, of which,
Fig. 1 is a perspective view of the reservoir of an ordinary three wick lamp
adapted to receive and hold a frame Fig. 2.
Fig. 2 is a perspective view of a porcelain or metallic frame adapted to fit upon
the reservoir Fig. 1 after the manner shewn by Fig. 3 which is an end elevation of
Figs. 1 and 2 combined.
Fig. 4 is an enlarged detail hereinafter explained.
Fig. 5 is a diagram illustrating an alternative arrangement of the wick tubes.
Fig. 6 is a view illustrating the combination constituting my invention and its
application in connection with the film of a cineamatoscope.
For the purposes of my invention I provide a lamp the reservoir of which A
(Fig. 1) may have one or more wick tubes B (preferably three as shewn) arranged
parallel with each other, the said reservoir being provided with suitable means,
such for instance as sockets C, for receiving the legs a of a preferably rectangular
frame D (Fig. 2) substantially as at Fig. 3, constructed of porcelain or any suitable
metal capable of withstanding the heat to which it may be exposed. Upon the
upper surface of the said frame I place the same number of porcelain or suitable
metallic rods E as there are wick tubes B, one over each, and in order to retain
the said rods in this position I may find it convenient to form in the ends of the
said frame upon which these rest a like number of undulations, so that the said
rods may rest in these as at Fig. 3. Each of the said rods may be provided with
one long, or any desired number of short but suitable spring clips such as G,
adapted to hold a curtain, fringe or plate H of any material capable of being
rendered incandescent by the application of heat, as shewn by Fig. 3 and more
graphically by the enlarged diagram Fig. 4, the said curtains or the like being so
suspended upon the rods E as to depend immediately over, and of such a length
as to reach nearly to the wick tubes B, so that the flames from the wicks may
impinge directly thereon. Or I may arrange the said wick tubes in pairs, and at
such an angle that each pair lean towards each other, a sufficient space being left
between them to receive the incandescent curtains or the like H as at Fig. 5,
which provides that the flames from the wicks in the said tubes would impinge
upon each side of the said curtains or the like.
The said lamp would be placed in such a position within the lantern that the
said wick tubes and the incandescent curtains or the like would be presented

page_text: end wise to the condenser of the lantern, a suitable reflector or reflectors being
provided by the means of which the back light would be reflected between the said
curtains or the like to and upon the said condensor.
A portion of my said improvements consists in the use of a condensor of
unusually small diameter, that is to say from one to two, or two and a half inches,
and preferably consisting of a double convex lens J and a meniscus J', placed in
the order and position shewn by Fig. 6, so that the light may be concentrated
directly upon the centre of the picture to. be projected, and assuming that my
invention is employed in connection with a cineamatoscope in which the pictures to
he projected are very small photographs upon a travelling ribbon-like film.K,
I am enabled by the combined means of my said incandescent lamp and condensor
to concentrate the intensely bright light directly upon the said small pictures
while at rest, and reflect these upon the lens L, from which they would be projected
on to the screen in the usual way.
Having now particularly described and 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.
1st. In an improved incandescent lamp for projecting lanterns, the combination
of a reservoir such as A, having one or more parallel wick tubes B, and sockets
or their equivalents C for receiving and holding the legs a of a porcelain or other
frame D, carrying porcelain or other suitable rods E, adapted to receive and hold
incandescent curtains, fringes, plates or the like H, substantially as and for the
purposes herein described and shewn by Figs. 1 2, 3 and 4 of the accompanying
drawings.
2nd. In an improved incandescent lamp for projecting lanterns, the combination
of a reservoir A having one or more pairs of parallel wick tubes B placed at such
an angle that the flames therefrom may impinge upon both sides of incandescent
curtains or the like H, suspended upon porcelain or other rods E, borne by a
porcelain or other frame D, fixed upon the reservoir A, substantially as herein
described and shewn more particularly by Fig. 5.
3rd. In combination with the incandescent lamp set forth in the preceding
claims, the use and application of a condensor of short focus preferably consisting
of a double convex lens J and a meniscus J' substantially as and for the purposes
⚫ herein described and shewn, more particularly by Fig. 6.
4th. The combination of the incandescent lamp and condensor set forth in the
preceding claims, and the employment of same in connection with cineamatoscopes
substantially as herein described.
GEO. THOS. HYDE,
1 Broad Street Buildings, London, E.C., Agent for the Applicant.