Year: 1889

page_text: in the free state of bremen and cerman Empire do hereby declare me
said 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 refers to an apparatus for automatically changing light or reflected
pictures and advertisements thrown on suitable places to be reflected and exhibited
at a distance from the apparatus. These pictures change automatically at determined
intervals, thereby attracting the attention of passers by
.
The apparatus according to this Invention is represented in the annexed drawings,
in which
Figure 1 represents an elevation of the apparatus in longitudinal section.
Figure 2 is a front elevation of the clockwork for changing or replacing the pictures
or advertisements.
Figure 3 is a front view of the picture changing device.
Figure 4 is a side view of same.
Figures 5 and 6 are a side and top view respectively of the striking latch.
Figure 7 shows the picture or advertisement holding discs.
Figure 8 is a section of same through line XX, and Figure 9 is 'n .section
through Y. Y. on an enlarged scale.
Figure 10 is a side view and Figure 11 a plan of the device for winding up the
clockwork.
An apparatus according to this Invention comprises a magic lantern, a picture or
advertisement, carrying disc a clockwork and a train of wheels, for putting the said
advertisement disc in motion. In the lantern case A which is provided with a
chimney A and a door A³, there is a lamp B, the rays of which are reflected by a
concave mirror C, through an aperture D on to transparent plates which are provided
with pictures or advertisements and carried on the disc S. These transparent pictures
or advertisments are reflected or transferred in a magnified state by means of the
object lenses E onto a suitable surface, and thereby made visible at a distance.
In order that the then exhibited picture may be exchanged for another, the disc S
is provided with a series of transparent pictures or advertisements o, o (Figure 7),
which as is apparent from Figures 8 and 9 can be removed at pleasure and replaced
by others. The disc S consists of two plates 3. s, in which at certain distances there
are provided radial grooved bars p, in the grooves of which the plates o can be laid,
and are then held tight by means of the springs 7.
To automatically change the pictures by turning the disc S, a clockwork contrivance
is provided, which consists of two main parts, the works and the train of
wheels.M.
The spring drum a, acting through the train of wheels M, imparts motion to the
middle wheel b, on whose axis, d, the disc S is fixed. The movement begins as soon
as the pin t.of the running wheel c is set free. This liberation is effected by the
clockwork O, which is constructed on the principle of an alarm clock, on the minute
arbor of which a wheel is set provided with ratchet teeth. This wheelsets the
pint free at any desired interval (reference to Figures 3 and 4) by means of the
ratchet teeth provided on its periphery engaging with the pin s. t of the lever g.
The lever g is fulcrumed at h, its arm e being provided with two catches or stops e
and e arranged as shown in Figures 5 and 6. A spring, resting on e returns the
lever 9 to its normal position.
Supposing then that the pin s. t were at the foot of one of the teeth of the wheel,
the arme of the lever g would then be at its highest, and the pint held fast by

page_text: the catch e. By the turning of the wheel, the pin 8. rises over one of its teeth,
the arm e consequently sinks and t advances from 2 to e¹. Now the pin s. t has
arrived at the point of the tooth of the wheel f, with which it engages, and at the
next moment drops down. The pin t passes between the stops and ², and the
wheel e can now revolve until the pin again engages with the stop e².
By the number of teeth off, and the number of striking pins on the wheel c, the
turning of the disc S can be regulated, so as to produce different pictures at greater
or lesser intervals.
To wind the clockwork O, there is provided a pawl and ratchet arrangement on
the axis (Figures 10 and 11). The winding lever is pivotted at I and carries a
pawl which acts on the ratchet wheel n, which is fixedly connected with 7. If the
contrivance is not to be used the pawl u may be put in and out of gear by the crank m,
and held in either position by the pin n³ entering one or other of the holes ¹².
Instead of a disc such as S, an endless band provided with advertising plates can
he employed, and instead of the arrangement with transparent plates, semi-transparent
discs can be used and lighted from a source of strong light, the illuminated pictures
being thrown on a larger surface.
The characteristics of this Invention consist in the application of an intermittent
movement to a disc carrying transparent plates, the advertisements or pictures on
which are reflected or thrown on any suitable surface by means of a magic lantern,
such intermittent movement being permitted by a special clockwork mechanisin on
the alarm principle and in the use of advertising. discs, the plates of which can be
taken out and changed.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. An automatic advertising apparatus consisting of a dise such as S, or an endless
band, provided with transparent plates, upon which are deposited advertisements or
pictures and set in motion and changed intermittently by means of clockwork, said
pictures or advertisements being reflected or thrown upon a suitable surface by means
of a magic lantern.
2. In an automatic advertising apparatus such as described, the mechanism for
automatically changing the advertisements displayed, consisting of the clockwork O,
the mechanism M and the device g, e, provided with stops el, e² and a pin s. t, the
ratchet wheel and wheel e provided with a pin t, all operating substantially as
described and set forth with reference to the drawings hereto annexed.
3. In an automatic advertising apparatus such as described, the means of securing
removable transparent plates such as o, to devices such as p, provided with springs
such as g, as set forth with reference to Figures 7, 8 and 9 of the drawings hereto
annexed.
Dated this 28th day of October 1000
H. & W. PATAKY,
By Cheesbrough & Royston,
15, Water Street, Liverpool, Agents for the Applicant.