Improvements in Apparatus for Exhibiting Automatically Changing Advertisements.
Year: 1889

page_text: Date of Application, 11th Mar., 18:9
Specification Accepted, 13th Apr., 1889
Improvements in Apparatus for Exhibiting Automatically Changing
Advertisements.
I CARL OTTO RADDE of Cathrinenstrasse 39 Hamburg in the Empire of
Germany Manufacturer 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 that class of apparatus for displaying advertisements in
which a suitable clockwork or other motive power is applied to drive a rotary drum
or holder on the circumference of which flexible advertisement sheets, for instance on
paper or fabric are hung by one end so as to fall over, one by one at intervals upon
rotation of the drum and thus appear before a window in the casing.
The present improvements consist in the arrangement for fixing and exchanging
the separate advertisement sheets and in a contrivance for regulating the equal
changing of the sheet exhibited.
The accompanying drawings illustrate so much of the said improved apparatus as is
necessary for understanding the present invention, Fig. 1 being a longitudinal
section and Fig. 2 an end view partly broken, of the drum aforesaid, Fig. 3 being a
side elevation of the drum and regulator, and Figs. 4 to 7 detail views of the
regulator on a larger scale than Fig. 3.
The ends of the advertisement, sheets D are secured respectively to bars H made of
metal or wood and the latter and placed in the corrugations or longitudinal slots or
recesses upon the circumference of the drum E-The bars are secured in the
recesses, at one end by their reduced and shouldered ends which engage into slots n
at that end wall P of the drum, at the other by an annular flange upon the
separately revolvable disc R which lies over the ends of the bars-To permit of
convenient removable or insertion of the bars, the annular flange of the disc R is
cut away for a distance sufficient at least for the passage through the gap, of one of
the bars H-This gap is closed by a gate i of the nature shown, held closed or
open as the case may be by a spring-Each of the bars may be inserted or removed,
one by one by moving the drum E, or the disc R to bring each bar in turn, or that
which is to be removed under the gate i for removal, or to bring the respective slots b
one by one under the gate i for insertion of the bars H, as the case may be.

page_text: Each sheet D is encumbered with a small weight a placed not far from the upper
end of the sheet-As the dram revolves in the direction of the arrow Fig. 3. the
sheets are gradually raised at the back of the drum, lie upon the same and eventually
when the drum has revolved sufficiently fall down successively over the front and so
become presented behind the window in the case.
According as there are more or fewer sheets upon the drum, or when said sheets
are of different materials smoother or rougher or more or less flexible, or where for
instance some are embossed or have samples or patterns fastened on their faces, the
intervals between the falling over of the sheets becomes irregular, and some are
liable in falling to pull over others with them, and so not give an equal display to
each.
To obviate these defects, a regulator is provided to bear on the sheets as they pass
upward on the back of the drum and prevent the falling of each sheet until its end
have passed from under the regulator This regulator consists of a roller T supported
on a spring the pressure and position of which is regulated by the contrivance
shown in Figs. 3 to 7. Upon the backwall of the case or equivalent support W is
fastened the plate J on which are the guiding shears I for holding the slide S. so
that it may be shifted up and down-The set screw K secures the slide in the proper
position; the spring F is fastened in the pillars on the slide S. On the plate J at a
suitable distance from the slide S is arranged the lever N pivoted on the one side to
the lug on said plate J and terminating at the other end in a flattened and
perforated disc through which passes the set screw o the collar g of which adjusts the
lever N The spring F passes through or under a slot in the lever N so that the
pressure of the spring F is restrained as desired by suitable adjustment of the lever N.
The roller T bears against the sheets on the back of the cylinder its pressure will
need adjustment according to the number of sheets on the drum and consequently
the thickness of the layer on which it bears. Its height will be adjusted according
to the thickness and consequent flexibility of the advertisement sheets, it being
intended to retain each sheet in its turn for a sufficient length of time to ensure its
falling immediately after passing from under the roller.
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 ;-
In apparatus for displaying advertisements and automatically changing the same at
intervals, substantially as set forth.
1) The method of securing advertisement sheets upon a rotary drum having
corrugations or recesses, by means of bars H held in place by the drum wall P and
by disc R provided with gate i ;-substantially as and for the purpose set forth.
2. A regulator whereby the falling of the individual sheets is restrained for a
certain period and whereby only one suspended sheet is released at a time, substantially
as and for the purpose set forth.
Date : 1
1
1000