Improved Portable Advertising Apparatus.
Year: 1899

page_text: Improved Portable Advertising Apparatus.
I, WILLIAM ISAAC CHADWICK, of 26, King Street, Manchester, Engineer, do
hereby declare the nature of this invention to be as follows -
My said invention relates to an improved device for advertising and exhibition
purposes. In a wheeled vehicle having closed sides somewhat of the form of a
van I provide transparent or translucent screens at one or more sides of the
vehicle. In the interior of the vehicle I provide a projection lantern for the
purpose of throwing on to one or other or all of the screens transparencies
pictures diagrams or other like devices. In some forms of my said invention the
pictures are projected direct on to one or more of the screens. In other forms of
my said invention total reflexion prisms or reflectors are interposed for projecting
the pictures at a suitable angle to the projecting lens. In some cases such mirrors
or prisms are mounted in such a manner as to direct the picture from one screen
to the other for the purpose of changing the pictures. Such an apparatus as
hereinbefore described is intended to constitute a portable advertising machine.
Dated this 22nd day of February 1899.
E. T. WHITELOW, A.M. Inst. C.E.,
70, Deansgate, Manchester, Agent for the Applicant.
Improved Portable Advertising Apparatus:
I, WILLIAM ISAAC CHADWICK, of 26, King Street, Manchester, Engineer, dó
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 and accompanying drawings in which:
Fig. 1 is a longitudinal cross section and
Fig. 2 is a sectional plan.
My said invention relates to an improved device for advertising and exhibition
purposes. In a wheeled vehicle such as having closed sides somewhat of the form
of a van I provide transparent or translucent screens at one or more sides of the
vehicle. In the interior of the vehicle I provide a projection lanterne for the
purpose of throwing on to one or other or all of the screens transparencies pictures
of still life so called "living pictures" diagrams or the like. In some forms of
my said invention the pictures are projected direct on to one or more of the screens
as shown in Fig. 1. When thus projected directly on to the screen it is (in order
to get the best effect) necessary to tilt the projection lantern as shown in Fig. 1

page_text: 60 that a line drawn from the illuminant through the centre of the picture shall
rise above the eyes of persons standing at the ground level. In other forms of
my said invention total reflexion prisms or reflectors are interposed for projecting
the pictures at a suitable angle to the projecting lens. In such cases the mirrors
or prisms are mounted in such a manner as to be able to transfer the picture from
one screen to the other. One arrangement of such use of a mirror is shown in
plan in Fig. 2. The mirror d is secured to a ring or sleeve rotatably mounted
on the lens so that the picture may be transferred from one side of the van to
the other. By, turning down the mirror (hinged for this purpose) the picture
will be projected direct to the end screen as shown in Fig. 1.
The screens are preferably arranged so that they may be tilted so as to lie
normal to the axis of the cone of rays proceeding from the projection lens so as
to ensure more equal definition and to prevent distortion as will be well under-
stood.
The invention as hereinbefore described constitutes a portable apparatus for the
displaying of pictorial or other advertisements.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what I
claim is:-
A portable apparatus for the display of pictorial and other advertisements con-
sisting of a wheeled vehicle having translucent screens in combination with a
projection lantern mounted in the interior thereof substantially as set forth and
shown:
=
T1111
11000
E. T. WHITELOW, A.M. Inst. C.E.,
70, Deansgate, Manchester, Agent for the Applicant.