Improvements in Stereoscopes for Advertising Purposes and Public Use.
Year: 1895

page_text: [Communicated from abroad by Raoul Harilaos, of 19 Rue Cambon, Paris, in
the French Republic, Engineer.]
Improvements in Stereoscopes for Advertising Purposes and
Public Use.
"
I, WILLIAM EDWIN HEYS of 70 Market Street Manchester in the County of
Lancaster, Patent Agent, do hereby declare the nature of this invention, and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
This invention relates to an improved construction of stereoscopes for advertising
purposes and for public use in such places of public resort as restaurants, hotels,
cabs, railway carriages and the like. In these improved stereoscopes there is
employed a series of views and advertisements successively arranged upon endless
bands or films, mounted upon two or more rollers or upon continuous bands or films
each of which is wound alternately upon one or the other of two rollers..
In the case of the endless band, a single handle suffices to operate the apparatus.
In the other case, two such handles may be employed.
But, it having been found in practice that the use of two handles is inconvenient,
there has been designed and is illustrated in the accompanying drawings to which
reference is hereinafter made, a stereoscope with a continuous band.operated by a
single handle.
In the drawings
Figure 1 is a view of a vertical longitudinal section.
Figure 2 represents a transverse section along the line 1-2, Figure 1.
Figure 3 is a similar section along the line 3-4.
Similar letters of reference are employed to denote similar parts in each of the
figures.
R 1 and R 2 indicate the two rollers which carry the endless band or film upon
which the series of views and advertisements is mounted successively; M, the
operating handle; B, a barrel spring; P, a toothed pinion gearing with a
toothed wheel E; r 1 and r2, guiding rollers; and F, a spring acting as a brake.
In the particular construction illustrated, the different successive views and
advertisements are mounted upon the endless band or film p, which is preferred to
be transparent. This film is carried by the two rollers R1 R2, one of which, R 1,
is capable of being turned by the external handle M, so as to wind and unwind the
continuous band or film. Tension in the band or film is obtained by means of the
barrel spring B, acting through the intermediary of the toothed wheel and
pinion EP, of which the pinion is fixed upon the axis of the roller R 2, and the
wheel upon that of the barrel spring. The barrel spring is made sufficiently
strong to pull up any slackness which may arise in the film between the rollers.
To prevent any movement of the film or rollers when the apparatus is not being
actuated, a brake may be provided. This may consist of the spring F, which
presses forcibly against a cylindrical part of or upon the roller R 1, thus
developing sufficient friction to more than balance the maximum tension of the
spring B. This prevents the action of the spring B, when the handle of the roller
is not controlled by hand.

page_text: The barrel spring, as well as the brake may either or both be substituted by other
devices by means of which the saine object may be attained.
n
In using the stereoscope, if the handle be turned in one direction, the film or
band will be wound on the upper roller, whilst it be turned in the opposite
direction, the barrel spring will act to wind it upon the bottom roller.
In the construction of a stereoscope with two handles, there are arranged on
opposite sides of the apparatus, towards the back, bearings in which the two
rollers can turn as before. The filin or endless band is also mounted upon these
rollers as before described and is wound from the one roller to the other by
means of external handles fixed upon the axes of the two rollers. These handles
may both be on the same side of the apparatus or on opposite sides: The barrel
spring and its gearing are dispensed with and 'the film or band is wound from the
one roller to the other alternately, by the handles alone...
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. A stereoscope for advertising and for public use, having a series of successive
views and advertisements arranged upon an endless band or film passing around
two or more rollers, or upon a continuous band or film wound upon two rollers
alternately, substantially as herein before described with reference to the accom-
panying drawings.
2. A stereoscope for advertising and for public use, having a series of views
and advertisements arranged upon a continuous band or film wound upon two
rollers alternately by means of a single handle, constructed and arranged
substantially as hereinbefore described with reference to the accompanying
drawings.
3. A stereoscope for advertising and for public use, having a series of views
and advertisements arranged upon a continuous band or film wound upon one
of two rollers alternately by means of a handle upon each roller, constructed
and arranged substantially as hereinbefore described with reference to the
accompanying drawings.
Dated this 16th day of September A.D. 1895.
WILLIAM E. HEYS.