The Combination of a Transparent Glass Clock or Dial Face with a Movable Advertisement or other Indicator Screen at the Back of same.
Year: 1887

page_text: Date of Application, 16th Feb., 1887
Complete Left, 16th Nov., 1887
Complete Accepted, 16th Dec., 1887
The Combination of a Transparent Glass Clock or Dial Face with a
Movable Advertisement or other Indicator Screen at the Back of
same.
I CECIL WALKER of 37, Cedars Road, Clapham, Surrey, Engineer do hereby declare
the nature of my said invention to be as follows:-
The object of this invention is to use in combination with a transparent glass clock
or dial face a movable screen on which advertisements or trade indications can be
exhibited changes of the advertisement or indications taking place continuously or at
fixed intervals of time by mechanism operated or released by the clock gear or it may
be by a separate train.
The advertisements or indications may have a sudden flashing exposure through
apertures of a back plate or they may be exposed through apertures in succession by
the movement of a roll on which the advertisements are arranged or by the motion of an
endless band. In some cases two distinct advertisements may be on view at the same
time either on the same band or on separate bands an exposure taking place at say every
minute of time.
The advertisements or indications may be plain or in colours and in some cases they
may be reflected from the front or from the back of the clock, particularly if the
indications be perforated or like stencil plates in skeleton form.
1701
1007
H. GARDNER,
166, Fleet Street, London,
Agent for the said C. Walker.

page_text: I CECIL WALKER of 37 Cedars Road, Clapham, Surrey, Engineer, do hereby declare
the nature of my said 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 this invention is to use in combination with a transparent glass clock
or dial face a movable screen on which advertisements or trade indications can be
exhibited, changes of the advertisements or indications taking place continuously or at
fixed intervals of time by mechanism operated or released by the clock gear or it may
be by a separate train..
In some cases two distinct advertisements may be on view at the same time either
same band or on separate bands an exposure taking place at say every minute
on the
The advertisements or indications may be plain or in colours and in some cases they
may be reflected from the front or from the back of the clock particularly if the indica-
tions be perforated or like stencil plates in skeleton form.
My invention will be understood by the annexed drawings in which at Figure 1
I show a front elevation of two bands A. B. behind a transparent clock dial the space
between the two bands being sufficient for the arbor of the hands to pass through so
that the clock can be kept going either by means of independent works to that of the
bands moving mechanism or to receive motion from the bands moving mechanism.
The bands A, B, are enclosed by the clock casing and the mechanism for moving the
bands round in one direction are behind the end screen C, said mechanism being shown
in the side view Figure 2, the upper roller D of the bands A, B, being mounted on the
axle E Figure 2 and the lower roller F on tho axle G. The bands may be endless
provided with advertisements or indications shown in succession by a continuous
movement of the works Figure 2 these being kept on the move by a spring, or by a
weight suspended from the cord H. the works in such a case being like those of an
ordinary clock but I prefer to arrange the works as shown at Figure 2 so that at fixed
intervals of time the three teeth on the wheel I on escaping the lantern wheel J frees
the upper roller, at the same instant the segment wheel K taking its motion from the
wheel L, puts a drag upon the bottom roller F through the intermediate wheels M. N.
PQ. dragging the lower roller round and the bands with it to keep the bands behind
the transparent clock face taut.
If the bands are not endless I arrange a second set of wheels shown at Figure 3
which are thrown into action by a weight suspended from a cord R preferably fitted on
the other end S of the clock casing to rewind the bands on to the upper drum for a
restart of the bands in a downward direction under the action of the mechanism shown
at Figure 2.

page_text: Figure is a part perspective view of a train of wheels by which through the
travelling movement of a half wheel T governed by a spring barrel U the half wheel
during one half rotation acts upon the upper band carrying roller D through the inter-
mediates V, W, to cause the upper roller to drag the bands A, B, upwards and when
the half wheel T is travelling round the other half of its circle it is in gear with the
lower intermediates X, Y, Z, for drawing the bands downward so that at fixed periods
of time determined by the speed of rotation or by the diameter of the wheel T so the
time can be regulated with which the change for the upward or downward travel of the
bands A, B, shall take place.
Instead of the hands being wound upon the rollers D, F, said rollers may act as
guide rollers only the bands being wound alternately on the rollers V',
Z'.
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 :-
The combination of a transparent glass clock or dial face with a movable advertise-
ment or other indicator screen or screens at the back of same and operated by a train
of wheel work in the manner described said train of wheel work being arranged in a
side casing either as an independent train for moving the advertisement screens only
and independent of the clock gear or as part of same, the advertising screens being
shifted at fixed periods of time all as described.
Dated this 16th November 1887.
H. GARDNER,
166, Fleet Street, London, E.C.,
Agent for Cecil Walker.