Year: 1898

page_text: We, ERNEST NISTER and THEODOR LOEFFTZ, Trading as Ernest Nister, Advertiz-
ing Contractor, and THOMAS JAMES JONES, Agent, all of Amberley House, Norfolk
Street, Strand, in the County of London, do hereby declare the nature of this
invention to be as follows:-
This invention consists of automatically operated advertizing apparatus whereby
two different pictures, devices or other matter of the nature of an advertisement
or announcement are alternately exhibited.
We provide two discs, which are made to rotate partially against each other, or
one may be stationary and the other partially rotating. Each disc is made
in sections, for instance four, and contains a picture or other device or other
matter of the nature of an advertisement or announcement.
The sections of
the moving disc are arranged to pass in front of or behind the sections of the
stationary disc so that when the rotary disc is in one position, one picture or
device is exhibited, and when it is in the other position, the other picture or
device is exhibited. The partial rotation is performed periodically and auto-
matically.
Various means may be employed for this purpose, such as clockwork or an
electric motor for the purpose. Or as we prefer it, we use a hydraulic motor for
instance one having a long cylinder the piston rod of which passes out at one
end and is connected with a guided bar which by tappet and lever gear with
tumbling bob operates levers connected to taps for admitting water to and emit-
ting water from the ends of the cylinder alternately.
Dated this 23rd day of March 1898.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.

page_text: Street, Strand, in the County of London, 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 consists of automatically operated advertising apparatus whereby
two different pictures, devices or other matter of the nature of an advertisement
or announcement are alternately exhibited.
We provide two discs which are made to rotate partially against each other, or
one may be stationary and the other partially rotating. Each disc is made
in sections, for instance four or six, and contains a picture or other device or other
matter of the nature of an advertisement or announcement. The sections of
the moving disc are arranged to pass in front of or behind the sections of the
stationary disc, so that when the rotary disc is in one position, one picture or
device is exhibited and when it is in the other position the other picture or
device is exhibited. The partial rotation is performed periodically and auto-
matically.
Various means may be employed for this purpose such as clockwork or an
electric motor. Or as we prefer it, we use a hydraulic motor for instance one
having a long cylinder the piston rod of which passes out at one end and is con-
nected with a guided bar which by tappet and lever gear with tumbling bob
operates levers connected to taps or a four way cock or a slide valve for admitting
water to and emitting water from the ends of the cylinder alternately.
Figs. 1 and 2 illustrate the principle of action in a simple way and on a small
scale of the sector discs, as applied to a small advertizing card intended to be
given away to customers. We have here as an example shewn the stationary
disc as consisting of four sector shaped leaves or sections A with the picture of a
cow on it, and a rotatable disc consisting of four sector shaped leaves or sections B
with the picture of a tin containing beef extract. Fig. 1 shews the tin
sections B as a whole and Fig. 2 shews an intermediate position wherein the
cow sections A begin to appear as they gradually are uncovered by reason of the
sections B being moved in under them. By pulling the string 1 the cow will be
made to appear and by pulling the string 2 the tin will be made to appear.
cardboard of which this advertising card is made is flexible enough to permit the
sections to slide under each other."
The
Fig. 3 is a front view and Fig. 4 a side view of an apparatus worked auto-
matically by hydraulic power. Fig. 5 is a side view of a cataract shewn in
Fig. 3.
The stationary disc consists in this example of four sector shaped
leaves A which are attached to the front part of a box shaped frame C by means
of the bars D. The rotating disc consists of four sector shaped leaves B which in
this example extend to a somewhat larger diameter than that of the leaves A
but a reverse arrangement of these diameters may be used. The position shewn
in Fig. 3 answers to that of Fig. 2 that is to say an intermediate one in which
the picture or device supposed to be contained on the leaves A are half covered by
the leaves B which latter are supposed to contain another picture or device. The
changes from the one picture appearing to the other picture appearing are effected
automatically by means of the hydraulic apparatus now to be described. E is a
hydraulic cylinder the ends of which by the pipes E1 and E2 and the four way
cock G are alternately put in communication with a pipe F connected to the
street main thus causing the piston to reciprocate in the cylinder. The piston rod
cross head H is by the link H double armed lever H2 and link H³ connected to
one of the four spokes I to which the four leaves B are attached. The lever H2 5
has its fulcrum in the back wall of the frame C. The cross head H has an
arm Ho which at the outstroke of the piston comes in contact with a stop collar K¹
on a reversing rod K and on the instroke comes in contact with the stop
collar K². The rod K is connected to the lever L on the tripping bar L¹, which
has catch hooks that engage with the tripping collars M¹ or M³ on a tripping 5

page_text: rod M. The helical springs N and N¹ on the latter come alternately against the
arm Ho on the cross head whereby the rod M is moved in one direction or the other
by respective springs after it has been sufficiently compressed, and after the
tripping action has taken place. The rod K is connected to the lever O on the
four way cock G. Assuming that water under pressure is admitted to one end of
the cylinder and that the piston has come to the end of its stroke, then the trip-
ping of the bar L¹ takes place that is to say one of the collars M¹ or M² is
released and the other is caught. By the reversing of the four way cock, water
under pressure is admitted to the other end of the piston, and the latter caused
to perform a stroke in the opposite direction. Instead of the four way cock we
may use a slide valve.
But in order to moderate the shock caused by the reversing and to give a
pause at the end of each stroke we prefer to employ a dashpot or cataract, for
instance one of the form shewn consisting of a cylinder P containing oil and
having an easily fitting piston. This cylinder has enlarged end chambers P1 P2
for giving the required impeding effect and then relief. The piston rod is by
the rod and lever Q¹ and Q2 connected to the tripping rod M.
The leaves A are as stated fixed or stationary, and the leaves B rotatable by
the means described. But the leaves B are also movable along the spindle R to
the extent required for bringing them severally before or behind the stationary
leaves A. This motion is effected by a helical groove in the boss to which they
or rather the spokes I are attached. The helical groove in the example shewn
forms one fourth of a revolution and engages with a peg S on a bracket S¹ that
is fixed to the box frame C. On the leaves are provided buttons B₁ for holding
them at the proper distance from the stationary leaves A and for facilitating the
gradual sliding of their edges over each other. The weight of the cataract piston
and parts connected therewith may be counterbalanced as shewn. Instead of a
dashpot we may employ a fly such as is used in clockwork. Instead of the
lever H2 we may use a band attached to a wheel sector, or a tooth rack and a
tooth wheel sector.
1
In cases where water or other fluid under pressure is not conveniently available
we may use electricity supplied from any source. A rotating electric motor would
not be very suitable as much power would be lost by friction of the gearing
necessary for reducing the high speed of rotation, but such an arrangement could
be used, say with a shunt wound motor, and the last wheel in the train would be
fitted with a heart shaped or triangular cam for giving a pause of one third of a
revolution at the end of each stroke; the motor would not run away during this
pause and would meanwhile use very little current. But we prefer to use an
elementary form of motor of the kind shewn in the side view Fig. 6 and end
view Fig. 7, where a beam a is connected to a pair of cores b at each end which
work in the solenoid coils c. The beam or its rocking gudgeon would be con-
nected to the moving disc B described with reference to Figs. 3 and 4. For con-
veying, stopping, and reversing the current we employ a commutator worked by
clockwork. The whole of the apparatus should be enclosed for protection against
wet and dust.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
:
1. An apparatus for advertizing consisting of two sets of centrally mounted
leaves, one set being rotatable as against the other in such manner that one set
alternately covers and uncovers the other, in combination with means for auto-
matically effecting such motions and for producing a dwell or pause after each
motion substantially as set forth.
2. An advertizing apparatus as described in the first claim in combination with
means for automatically operating the same with a dwell or pause after each
motion substantially as described with reference to Figs. 3 to 5.*
..

page_text: 3. An advertizing apparatus as described in the first claim in combination with
means for automatically operating the same with a dwell or pause after each
motion substantially as described with reference to Figs. 6 and 7.
Dated this Thirty-first day of December 1898.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.