Year: 1898

page_text: I, DAVID INGLIS URQUIART, of 47, Westbourne Gardens, Glasgow, North
Britain, Coal Master, do hereby declare the nature of this invention to be as
follows:-
This invention relates to means for illuminating advertisements in windows
and other places. It may consist of an ordinary optical lantern used inside the
window of a shop or other place for the purpose of automatically throwing an
advertisement or advertisements upon a screen fixed in the window for the purpose
of attracting attention at night, or at other times. The slides or transparencies
containing the advertisements are arranged around a ring or cylinder with the
lantern inside the ring so that the edge of the ring travels intermittently through
the ordinary aperture in the lantern behind the dens. The ring holding the
transparencies is capable of being intermittently or continuously rotated by means
of clock work or other power so that after the lantern has been lit and the clock
work wound up the advertisement may be automatically displayed without any
attention for any length of time.
Or the ring, or its equivalent, for the purpose of carrying the transparencics may
be mounted relatively with the lantern in any other suitable mauner.
The lantern may be lit by oil, gas or electricity and in the case of using the
latter the ring or its equivalent may be automatically operated by an electric
motor.
The ring carrying the transparencies may be of double or treble or other depth
for the purpose of carrying two, three or more different circles of different classes
of advertisements so that when the one series of advertisements has completed its
revolution, the ring automatically drops. so as to present the next series to the lens
and so on.
Or an optical lantern may be dispensed with by using a large size of ring with
the transparencies full size and bringing them automatically to the window. In
this case the transparencies could be illuminated by any oil, gas or electric light
placed in any convenient position behind the transparencies.
As a modification I may employ a large circular slide carrier carried on three
or other convenient number of wheels running on a circular track. The said
circular slide carrier travels through the front part of a projecting lantern after
the manner of an ordinary slide carrier except that in the present case the carrier
is circular and moves freely through the front part of the lantern.
The said circular carrier for the slides is slowly rotated by any suitable clock-
work and any ordinary means may be used for causing the circular carrier to
move intermittently so as to give a certain period of exposure to each slide.

page_text: I, DAVID INGLIS URQUHART, of 47, Westbourne Gardens, Glasgow, North,
Britain, Coal Master, 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: -
This invention relates to improved means for illuminating advertisements in windows
and other places. It may consist of an ordinary optical lantern used inside the
window of a shop or other place for the purpose of automatically throwing an
advertisement or advertisements upon a screen fixed in the window for the purpose
of attracting attention at night or at other times. The slides or transparencies
containing the advertisements are arranged around a ring or cylinder with the
lantern inside the ring so that the edge of the ring travels intermittently through
the ordinary aperture in the lantern behind the lens. The ring holding the
transparencies is capable of being intermittently or continuously rotated by means
of clockwork or other power so that after the lantern has been lit and the clock
work wound up, the advertisement may be automatically displayed without any
attention for any length of time.
But that in order that my said invention may be more readily understood and
casily carried into effect I will proceed to describe the same with reference to the
accompanying drawings in which
Fig. 1 is an elevation and
Fig. 2 a plan illustrating one method of carrying out my invention.
Referring to the said drawings A is a ring of any suitable metal and diameter
formed or provided with pockets for the reception of the slides or transparencies B.
The said ring is carried on three or other convenient number of wheels C, the axle
of one of which is fitted or provided with a small pinion 1) in such a manner that
it can be rotated by suitable clockwork D. In this example the driving power
consists of a drum or barrel E on which a cord e is wound, the one end of the said
cord being weighted so as to cause the drum to revolve. The motion thus derived
is imparted to the pinion D before referred to either directly by the wheel For
through the intervention of any suitable train of wheels. In order that the rotation
of the disc may be rendered intermittent that is to say to enable the pictures to be
displayed for a given time one after the other, suitable governing means are
employed. For this purpose the ring A is fitted with pins a corresponding
numerically with the slides or transparencies carried. These pins are arranged to
come in contact with the arm of a star wheel G which is secured to and rotates
with a larger star wheel H. The arms of the latter are provided with pins or
projections which prevent its rotation by bearing against a stop carried by
a lever J attached to the armature of an electro-magnet j. The length of time
that the arm is thus held is controlled by a clock K which alternately makes and
breaks the circuit of the battery L; as soon as the circuit is completed, the armature
is deflected and the pin of the arm of the wheel H is released until its progress is
arrested by the second stop h² where it is held until the clock again breaks the
circuit when the armature is again raised by the spring ³ enabling the pin to pass
below the stop h² and the ring to rotate until the stop next in rotation engages
with the star wheel G when it is again brought to rest. A switch M may be
employed for the purpose of stopping the rotation when desired.
The lantern N which may be of any ordinary construction and illuminated by
oil, gas or electric light is arranged as shewn so that the ring forming the slide
carrier moves freely therethrough behind the lens.

page_text: The foregoing serves as an example of how my invention may be carried into
effect. The ring however, or its equivalent, for the purpose of carrying the trans-
parencies may be mounted relatively with the lantern in any other suitable manner
and in place of employing clock work as the driving power, an electric motor,
where electricity is used as the lantern illuminant, may be employed. The ring
carrying the transparencies may be of double or treble or other depth for the
purpose of carrying two, three or more different circles of different classes of
advertisements so that when the one series of advertisements has completed its
revolution, the ring automatically drops or is lowered to present the next series to
the lens and so on.
Or an optical lantern may be dispensed with by using a large size of ring, with
the transparencies full size and bringing them automatically to the window. In
this case the transparencies may or may not be illuminated by any oil, gas or
electric light situated in any convenient position behind the transparencies.
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
1. The general arrangement, construction and combination of parts constituting
the means for illuminating advertisements, substantially as hereinbetore described
and shewn in the accompanying drawings.
2. In means for illuminating advertisements in windows and other places, the
rotating ring A carrying the slides or transparencies, substantially as hereinbefore
described and shewn in the accompanying drawings.
3. In means for illuminating advertisements in windows and other places,
the automatic changing apparatus consisting of the ring A, or its equivalent, carry-
ing the transparencies or slides of the pictures or advertisements to be displayed,
mounted relatively with the optical lantern N so that the ring passes through the
lantern behind the lens, the said ring being driven by the clockwork D, or other
motive power, and having its motion rendered intermittent by an electro-magnet
and time clock, all constructed and arranged substantially in the manner as
herein before described and shewn in the accompanying drawings.
4. The employment of an intermittently rotated ring for the purpose of dis-
playing full size advertisements or pictures in windows and other places, whether
illuminated or not, arranged and actuated substantially in the manner as herein-
before described and shewn in the accompanying drawings.
Dated this 10th day of May 1899
JOHNSONS,
Applicant's Agents, 115, St. Vincent Street, Glasgow.