Improvements in Optical Lanterns for Advertising and other Purposes.
Year: 1889

page_text: Date of Application, 30th Aug., 1889-Accepted, 26th Oct.,
1889
COMPLETE SPECIFICATION.
Improvements in Optical Lanterns for Advertising and other
Purposes.
We HENRY PINCUS and OAKLEY SELLECK both of 841 Broadway, in the City of
New York, in the County of New York and State of New York, United States of
America, Gentlemen, do hereby declare the nature of our invention for OPTICAL
APPARATUS, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
Our invention is a new apparatus for automatically exhibiting in a magnified form
and upon a screen or the like a series of illuminated pictorial or other objects, in
succession, for advertising or other purposes, and it consists of a certain novel com-
bination of lenses and reflectors with an intermittingly revolving plate carrier for
receiving a series of glass plates with the desired objects thereon, and a motor for
operating the plate carrier, as bereinafter more fully described and illustrated in the
accompanying drawing in which
Figure 1. represents a rear elevation partly in section of our optical apparatus.
Figure 2. represents a vertical section thereof on the lineæ x fig. 1.
Figure 3. represents a horizontal section thereof on the line y y fig. 1.
Figure 4. represents a like section thereof on the line. fig. 1.
Figure 5. represents a cross section of a lens holder detached.
Similar letters of reference indicate similar parts.
The letter A indicates two vertical rods rising from a base or platform Band
supporting two cross heads CC one above the other. Each of said cross heads (C¹
has a hole or orifice D or D¹ usually round, formed therein, for the concentrated
passage of light, the axes of said orifices being coincident, and in the orifice D of the
upper cross head is fitted a magnifying lens E while below the orifice D' of the lower
head is located a condensing lens F. Between the two cross heads C (" is the plate
carrier G, consisting of a horizontal disc in which is formed a circular row or series of
light orifices G each corresponding to said light orifices D D of the cross heads, and
which is mounted on a vertical shaft or spindle I having its bearings in said heads, in
such a position relative to the light orifices of the cross heads that the circular
line intersecting the axes of the carrier orifices also intersects the axes of the head
orifices, and hence by revolving the plate carrier each of its orifices may be brought
directly opposite to the head orifices. Each of said light orifices G₁ of the plate
carrier is in practice fitted with a glass plate, as at G, fig. 3, on which plate the
selected object to be exhibited is properly inscribed, and which is held fast as by
edge gauges on the proper face of the carrier. Immediately above the plate-
carrier G is located a tappet arm J which is mounted on a vertical shaft J having its
bearings in the heads C, in such a position relatively to a circular row or series
of stop pins or teeth on the top face of the plate carrier, that by continuously
revolving said arm in a horizontal plane it engages with said carrier stop pins one
after another and by displacing the same imparts to the plate carrier intermittingly a
degree of motion equal to the distance between the carrier light orifices G¹ thereby
adjusting the latter in succession to the light orifices D D of the cross heads. In the
lower surface of the tappet arm J and at or near its free end is formed a transverse
grooves which is preferably curved and the inner edge of which is continuous with
one edge of sail arm where it engages the stop pins of the plate carrier, as shown
by dotted lines in fig. 3, so that when the arm engages either stop pin the latter
is received in said groove and travelling through it, is released at a fixed point,
with a corresponding adjustment of the plate carrier. Said shaft J of the tappet
arm is geared with a motor K to receive a continuously revolving motion there-
from for automatically operating the plate carrier G said motor being in this

page_text: example driven by a spring K¹ and the motor frame properly secured to the lower
cross head C¹.
The axis of the condensing lens F as well as the magnifying lens E is coincident
with the axes of said light orifices D D G of the cross heads and plate carrier, and
said condensing lens is fitted in a box or holder N in which is also fitted a second
or auxiliary condensing lens F' together with a light reflector F (see fig. 5) the
two condensing lenses being at right angles to each other and said reflector being
at an angle, usually of 45 degrees, to both lenses.
At a point above the magnifying lens E is located an image reflector O which is at
an angle corresponding to the angle of the light reflector 2 but usually in a plane
opposite thereto as shown. Said image reflector O is supported on the vertical rods A
as by means of socket pieces O¹ having set screws 02 for permitting said reflector
to be adjusted to different heights, and if desirable provision may be made for setting
the reflector also to different angles.
Opposite to the auxiliary condensing lens F¹ is located an illuminator P of any
usual or suitable construction, for directing an artificial light upon the reflector 12
through said auxiliary lens, whence such light is thrown upward through the main
condensing lens G upon the glass plate of the plate carrier G that may be in alignment,
and thence through the magnifying lens E upon the image reflector 0.
If deemed desirable the apparatus can be arranged to throw images on the side
walk, or a series of them may be placed in a wagon and the canvas of the wagon used
as a screen thereby affording a very superior portable advertising medium.
It may be remarked that the vertical rods A may have suitable hangers attached
thereto for exhibiting articles of merchandise.
When the apparatus is applied to use a glass plate with the object to be exhibited,
say a photograph or print, thereon, is placed opposite to each of the light orifices G'
on the plate carrier, and said carrier is put in operation by means of the motor,
whereupon the objects represented on the glass plates are successively directed upon
the object-reflector O at regular intervals of time, under a very strong light due to
the action of the condensing lens F and in a magnified form due to the action of the
magnifying lens E, from which reflector the object may be readily thrown upon the
desired surface as of a screen placed opposite thereto with a highly artistic effect.
In some cases the lenses E. F and plate holder G may be arranged for throwing the
object in a direction horizontally, instead of vertically as in the present example of
our invention.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
―
1st. An optical apparatus in which are combined a magnifying lens and a condensing
lens axially coincident with each other, an intermittingly revolving plate carrier
having a circular row of light orifices adapted to axially coincide with said
lenses and a motor for operating said carrier, substantially as and for the purpose
described.
2d. An optical apparatus in which are combined a magnifying lens, two condensing
lenses at right angles to each other, one condensing lens being axially coincident with
the magnifying lens, a light reflector at an angle to both condensing lenses, an
intermittingly revolving plate carrier having a circular row of light orifices, and a
motor for operating said carrier, substantially as and for the purpose described.
3d. An optical apparatus in which are combined a magnifying lens and con-
densing lens axially co-incident to each other, an object reflector opposite to said
magnifying lens, an intermittingly revolving plate carrier having a circular row of
holes, between said lenses, and a motor for operating said carrier, substantially as and
for the purpose described.
4th. An optical apparatus, in which are combined a magnifying lens, two con-
densing lenses at right angles with each other, one condensing lens being axially
coincident to said magnifying lens, an illuminator opposite to the other condensing

page_text: lens, a light-reflector at an angle to both condensing lenses, an object reflector opposito
to said magnifying lens, an intermittingly revolving plate carrier having a circular
row of light orifices and a motor for operating said carrier, substantially as and
for the purpose described.
5th. An optical apparatus, in which are combined an intermittingly revolving
plate carrier having a circular row of light orifices and a corresponding row of
stop pins, a revolving tappet arm adapted to engage with said pins of the carrier, a shaft
carrying said arm and a motor geared with said shaft, substantially as and for the
purpose described.
6th. An optical apparatus in which are combined an intermittingly revolving plate
carrier having a circular row of light orifices and a corresponding row of stop
pins, a tappet arm having a transverse groove the inner edge of which forms a
continuation of one edge of said arm, for engaging said pins of the carrier, a shaft
carrying said arm and a motor geared with said shaft, substantially as and for the
purpose described.
7th. An optical apparatus in which are combined two cross heads having light
orifices axially coincident with each other, a magnifying lens fitted in said orifice of
the upper cross head, a condensing lens arranged below said orifice of the lower cross
head, an intermittingly revolving plate carrier having a circular row of light orifices,
and a motor for imparting motion to said carrier, substantially as and for the purpose
described.
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