Improvements in or connected with Means or Apparatus for Displaying and Changing Notices, Advertisements, or the like.
Year: 1894

page_text: Date of Application, 11th May, 1894
Complete Specification Left, 11th Mar., 1895-Accepted, 20th Apr., 1895
PROVISIONAL SPECIFICATION.
Improvements in or connected with Means or Apparatus for
Displaying and Changing Notices, Advertisements, or
the like.
We, JAMES WHITE, Engineer, and HERBERT THURLING MIDDLETON,
Electrical Engineer, both of Connaught Mansions, 34, Victoria Street, in the City
of Westminster, do hereby declare the nature of this invention to be as follows:-
This invention relates to that class of apparatus in which a number of leaves or
tablets are mounted around an axis adapted to be intermittently rotated in such
manner that the front and back of two leaves carrying the notices, advertisements
or announcements will be displayed at one time, and the object of the present
invention is to obtain an apparatus of the above character which will be certain in
its action, comparatively inexpensive to produce and in which any of the leaves
are capable of being readily changed without the necessity for dismounting or
interfering with the others.
In carrying the invention into effect, a horizontal shaft is employed which at its
ends is mounted in bearings formed in suitable standards carried by a base plate
and
upon
this shaft near to each end is fixed a disc each of such discs being formed
near its periphery with a ring of slots arranged around the disc in such manner as
to radiate from the shaft or axis.
In each of these slots and extending from one disc to the other is arranged a
hinge rod upon which is loosely mounted with capability of turning freely thereon
a leaf or tablet formed preferably of metal and provided with a tube at one edge
through which passes the hinge-rod so that the leaf is adapted to swing freely
thereon.
The hinge rod, which is mounted with capability of moving freely in the radial
slots, is at one end headed and is inserted in position by being passed end wise
through one of the radial slots of one disc until the entering end engages the
opposite slot in the other disc, and its further longitudinal movement is arrested by
its head coming against the disc at that end, the leaf of course having been placed
in position in the process of mounting the hinge-rod.
In order to prevent the endway movement of the hinge rods in the reverse
direction, their headed ends are enclosed by four segmental covering plates screwed
to the slotted disc, the heads of the hinge rods being countersunk in recesses
surrounding the slots.
By this arrangement of parts, when it is desired to remove a leaf or tablet and
replace it by another one it is only necessary to detach that segment of the covering
plate over that particular hinge rod when the latter may be drawn out endwise, the
leaf or tablet removed and another placed in position.
In order to impart a rotary motion to the disc shaft a disc or wheel is fixed
thereon outside one of the standards and this wheel is provided with a ring of pins,
studs or contrate teeth projecting from its outer face and a step by step rotary
motion is imparted to this wheel by means of a driver consisting of a vertically
reciprocating driving bar pin-jointed to a crank or offset from a horizontal rock
shaft which receives a rocking motion at stated times in the manner hereinafter
lescribed.

page_text: Upon one face of this vertically reciprocating bar is provided a driving tooth
which is formed with a slightly upward inclination so that it will readily engage one
tooth of the driving wheel in its upward motion whilst in its downward motion it
will readily slip out of engagement with the pins or teeth whilst above the driving-
tooth the driving bar is curved towards the driving wheel in such manner that it
rests against the pins or studs and maintains the proper relation between the parts
whilst it guides the driving tooth into correct position, a spring being employed to
keep the driving bar up to its work.
The tooth or driver is so shaped that as it lifts one tooth or pin the next
succeeding pin comes against its under side thus forming a lock to prevent the over
driving of the apparatus whilst in order to prevent the back action of the driving
wheel upon the return motion of the tooth or driver a detent is employed consisting
of an inclined tooth carried by a weighted arm pin-jointed to the standard so that
the weight of the arm will normally keep the detent in engagement with the pins
or teeth of the driving wheel.
The leaves or tablets fall over upon reaching a certain point in the revolution of
the apparatus but in order to regulate their descent and ensure their falling one by
one an offset from one of the standards is employed which offset carries a curved
bar upon its underside formed with inclined teeth which as the leaves come round
engage their edges and separate and hold them until the right moment for their
descent and the upper leaves are thus held erect in a proper vertical position to
display the notice or announcement on one side thereof, whilst the preceding leaf
or tablet which is hanging vertically from its hinge rod displays its opposite side.
In apparatus of a like character there has been a difficulty in getting the
opposite faces of the two exposed leaves or tablets in proper alignment so as to
expose a flat surface for the reason that some of the recently fallen tablets had a
tendency to force forward that which had fallen last and thus cause it to assume an
inconvenient angle but according to the present invention this difficulty is overcome
by means of the radial slots which upon a leaf falling permit the hinge pins of
some of the under leaves to be carried slightly to the rear of the apparatus thus
permitting the exposed leaf or tablet to hang perfectly plumb.
The apparatus herein before described is mounted in a suitable box or case
provided with a hinged front which is curved to about the radius described by the
falling leaves and this front, which is suitably glazed, is secured by a lock, and one
end of the case is provided with a metal door or removeable plate, to allow of easy
access to the interior for the purpose of removing or changing the leaves or plates
and consequently the advertisements, without disconnecting the apparatus from the
actuating mechanism.
The motive power employed to drive the apparatus may be obtained from any
suitable source such for example as the opening and closing of a door in public
buildings or a vehicle but when applying it to a public vehicle such as an omnibus
it may conveniently be operated by the brake pedal lever which actuates the brake
and the means employed for conveying such motion from such apparatus to the
device above described and which means form part of the present invention, will
now be described.
On the rock shaft of the apparatus is fixed a crank or offset which is by a jointed
link or connecting rod connected with one arm of a bell crank lever mounted upon
an axis of motion the other arm of which is acted upon by a rounded nose formed
upon one end of a lever mounted upon an axis of motion the other end of which is
formed with a curved recess upon which acts the short end of the pedal lever for
actuating the brake so that in the downward motion of the short end of such pedal
lever on its return to its normal position one end of the rocking lever will be
depressed its opposite end will be raised and through the bell crank lever the
connecting rod will be longitudinally moved a given distance and will through the
rock shaft cause the driving wheel of the apparatus to be rotated the distance of
one tooth thus causing a change in the leaves or tablets.
The rocking lever, the bell crank lever, and the rock shaft are afterwards

page_text: returned to their normal positions by means of a strong spring which acts upon the
tail of a lever which is mounted upon an axis of motion and at its other end is
curved to act upon the rounded end of the short arm of the bell crank lever.
By this peculiar construction and arrangement of parts, upon the release of the
brake pedal after bringing the brake into action, the rocking lever will be depressed
and will through the bell crank lever, connecting rod and rock shaft, cause the
driver to give the desired impulse to the driving wheel. The object of this peculiar
construction and arrangement of parts is to prevent a too sudden action being
imparted to the rock shaft and driving wheel by the short end of the pedal or brake
lever in the sudden return motion of the latter and which without some intervening
regulating means might injure the apparatus.
Dated this 11th day of May 1804
VAUGHAN & SON,
Agents for the Applicants.
Improvements in or connected with Means or Apparatus for
Displaying and Changing Notices, Advertisements, or
the like.
We, JAMES WHITE, Engineer, and HERBERT THURLING MIDDLETON,
Electrical Engineer, both of Connaught Mansions, 34 Victoria Street, in the City
of Westminster, do hereby declare the nature of the said invention and in what
mauner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
Our said invention relates to that class of apparatus in which a number of leaves
or tablets are mounted around an axis adapted to be intermittently rotated in such
manner that the front and back of two leaves carrying the notices, advertisements
or announcements will be displayed at one time and the object of the present
invention is to obtain an apparatus of the above character which will be certain in
its action, comparatively inexpensive to produce and in which any of the leaves are
capable of being readily changed without the necessity for dismounting or interfering
with the others.
In carrying the invention into effect, a horizontal shaft is employed which at its
ends is mounted in bearings formed in suitable standards carried by a base plate
and upon this shaft near to each end is fixed a disc each of such discs being formed
near its periphery with a ring of slots arranged around the disc in such manner as
to radiate from the shaft or axis.
In each of these slots and extending from one disc to the other is arranged a
hinge rod upon which is loosely mounted with capability of turning freely thereon
a leaf or tablet formed preferably of metal and provided with a tube at one edge
through which passes the hinge rod so that the leaf is adapted to swing freely
thereon.
The hinge rod, which is mounted with capability of moving freely in the radial
slots, is at one end headed and is inserted in position by being passed endwise
through one of the radial slots of one disc until the entering end engages the
opposite slot in the other disc, and its further longitudinal movement is arrested by
its head coming against the disc at that end, the leaf of course having been placed
in position in the process of mounting the hinge rod.
In order to prevent the endway movement of the hinge rods in the reverse
direction, their headed ends are enclosed by four segmental covering plates screwed
to the slotted disc, the heads of the hinge rods being countersunk in recesses
surrounding the slots.

page_text: By this arrangement of parts when it is desired to remove a leaf or tablet and
replace it by another one, it is only necessary to detach that segment of the covering
plate over that particular hinge rod when the latter may be drawn out end wise, the
leaf or tablet removed and another placed in position.
In order to impart a rotary motion to the disc shaft, a disc or wheel is fixed
thereon outside one of the standards and this wheel is provided with a ring of pins,
studs or contrate teeth projecting from its outer face and a step by step rotary
motion is imparted to this wheel by means of a driver consisting of a vertically
reciprocating driving bar pin-jointed to a crank or offset from a horizontal rock shaft
which receives a rocking motion at stated times in the manner hereinafter
described.
Upon one face of this vertically reciprocating bar is provided a driving tooth
which is formed with a slightly upward inclination so that it will readily engage
one tooth of the driving wheel in its upward motion whilst in its downward motion
it will readily slip out of engagement with the pins or teeth whilst above the
driving tooth the driving bar is curved towards the driving wheel in such manner
that it rests against the pins or studs and maintains the proper relation between the
parts whilst it guides the driving tooth into correct position, a spring being
employed to keep the driving bar up to its work.
The tooth or driver is so shaped that as it lifts one tooth or pin the next
succeeding pin comes against its underside thus forming a lock to prevent the over-
driving of the apparatus whilst in order to prevent the back action of the driving
wheel upon the return motion of the tooth or driver a detent is employed consisting
of an inclined tooth carried by a weighted arm pin-jointed to the standard so that
the weight of the arm will normally keep the detent in engagement with the pins
or teeth of the driving wheel.
The leaves or tablets fall over upon reaching a certain point in the revolution of
the apparatus but in order to regulate their descent and ensure their falling one by
one an offset from one of the standards is employed which offset carries a curved
bar upon its underside formed with inclined teeth which as the leaves come round
engage their edges and separate and hold them until the right moment for their
descent and the upper leaves are thus held erect in a proper vertical position to
display the notice or announcement on one side thereof, whilst the preceding
leaf or tablet which is hanging vertically from its hinge rod displays its opposite
side.
In apparatus of a like character, there has been a difficulty in getting the
opposite faces of the two exposed leaves or tablets in proper alignment so as to
expose a flat surface for the reason that some of the recently fallen tablets had a
tendency to force forward that which had fallen last and thus cause it to assume an
inconvenient angle but according to the present invention this difficulty is overcome
by means of the radial slots which upon a leaf falling permit the hinge pins of some
of the under leaves to be carried slightly to the rear of the apparatus thus
permitting the exposed leaf or tablet to hang perfectly plumb.
The apparatus herein before described is mounted in a suitable box or case
provided with a hinged front which is curved to about the radius described by the
falling leaves and this front which is suitably glazed, is secured by a lock and one
end of the case is provided with a metal door or removeable plate to allow of easy
access to the interior for the purpose of removing or changing the leaves or plates
and consequently the advertisements, without disconnecting the apparatus from the
actuating mechanism.
The motive power employed to drive the apparatus may be obtained from any
suitable source such for example as the opening and closing of a door in public
buildings or a vehicle but when applying it to a public vehicle such as an oninibus
it may conveniently be operated by the brake pedal lever which actuates the brake
and the means employed for conveying such motion from such apparatus to the
device above described and which means form part of the present invention, will
now be described.

page_text: On the rock shaft of the apparatus is fixed a crank or offset which is by a jointed
link or connecting rod connected with one arm of a bell-crank lever mounted upon
an axis of motion the other arm of which is acted upon by a rounded nose formed
upon one end of a lever mounted upon an axis of motion the other end of which is
formed with a curved recess upon which acts the short end of the pedal lever for
actuating the brake so that in the downward motion of the short end of such pedal
lever on its return to its normal position one end of the rocking lever will be
depressed its opposite end will be raised and through the bell crank lever the
connecting rod will be longitudinally moved a given distance and will through the
rock shaft cause the driving wheel of the apparatus to be rotated the distance of
one tooth thus causing a change in the leaves or tablets.
The rocking lever, the bell crank lever, and the rock shaft are afterwards
returned to their normal positions by means of a strong spring which acts upon the
tail of a lever which is mounted upon an axis of motion and at its other end is
curved to act upon the rounded end of the short arm of the bell-crank lever.
By this peculiar construction and arrangement of parts, upon the release of the
brake pedal after bringing the brake into action, the rocking lever will be depressed
and will through the bell-crank lever, connecting rod and rock shaft cause the
driver to give the desired impulse to the driving wheel. The object of this peculiar
construction and arrangement of parts is to prevent a too sudden action being
imparted to the rock shaft and driving wheel by the short end of the pedal or
brake lever in the sudden return motion of the latter and which without some
intervening regulating means might injure the apparatus.
And, in order that the said invention may be more clearly understood and readily
carried into effect, we will proceed aided by the accompanying drawings more fully

page_text: front end of the interior of an omnibus, b. represents the front of the omnibus and
represents the foot board to the perch or driver's seat, c. represents a horizontal
shaft which at its ends is mounted with capability of revolution in bearings formed
in standards d' carried by a base d. and the ends of the shaft c. are threaded to
receive nuts c² which screw up against shoulders on the shaft c. and by the aid of
which endway motion thereof is prevented, whilst one of such nuts also serves to
hold in position the driving wheel e. hereinafter described.
Upon the shaft c. near to each end thereof is fixed a disc c² and each of such
discs is near its periphery formed with a ring of slots c¹ arranged around the disc in
such manner as to radiate from the shaft or axis c.
In each of these slots c¹ and extending from one disc to the other is arranged a
hinge rod upon which is loosely mounted with capability of turning freely thereon
a leaf or tablet e formed preferably of metal provided or formed with a tube at
one edge through which passes the hinge rod so that the leaf is adapted to swing
freely thereon.
The hinge rod which is mounted with capability of moving freely in the radial
slots is at one end provided with a head c³ and this rod is inserted into position
by being passed endwise through one of the radial slots of one disc until the
entering end engages the opposite slot in the other disc, but its further longitudinal
movement is arrested by its head c* coming against the disc e² at that end as shown
more particularly at Figure 9., the leaf c of course having been placed in position
in the process of mounting the hinge rod c³.
.2*
In order to prevent the end way movement of the hinge rods c³ in the reverse
direction, their headed ends c* are enclosed by four segmental covering plates
secured to the slotted disc c² by means of screws whilst the heads of the hinge
rods are counter-sunk in recesses surrounding the ralial slots to prevent the
segmental plates impinging upon and binding the heads * of the rods c³, or, the
segmental plates might be recessed, or, the slotted disc or segmental plates might
be chased with that object.
By this arrangement of parts, when it is desired to remove a leaf or tablet es and
replace it by another one, it is only necessary to detach that segment of the
covering plate * over that particular hinge rod e³ as represented at Figure 8. when
the rod may be drawn out end wise the leaf or tablet c removed and another
placed in position.
In order to impart a rotary motion to the disc shaft c., a disc or wheel e. is fixed
thereon outside one of the standards d' and this wheel e. is provided with a ring of
pins, studs or contrate teeth el projecting from its outer face and a step by step
rotary motion is imparted to the wheel e. by means of a driver consisting of a
reciprocating driving bar e pin-jointed at e* to a crank or offset e from a
horizontal rock shaft e mounted in bearings forming brackets * and which rock
shalt receives a rocking motion at stated times in the manner hereinafter
described.
Upon one face of the vertically reciprocating bar or driver e2 is provided a
driving tooth e** which is formed with a slightly upward inclination so that it will
readily engage one tooth el of the driving wheel e in its upward motion as indicated
by the full lines in Figure 6., whilst in its downward motion the tooth e*** will
readily slip out of engagement with the pins or teeth e¹.
Above the driving tooth e2**, the driving bar is curved towards the driving
wheel e. in such manner that it rests against the pins or studs e¹ and more especially
in its lower or retracted position, as indicated at Figure 16., maintains the proper
relation between the parts and guides the driving tooth 2** into correct position,
a spring being employed to keep the driving bar e² up to its work, whilst a forked
guide formed in a bracket d³ carried by one of the standards d' controls the
driving bar e against lateral movement whilst a transverse pin 3** prevents the
driving bar e receding from the driving wheel e. in its upward stroke.
t
The tooth or driver e** is so shaped that as it lifts one tooth or pin e¹ the next
succeeding tooth comes against its underside thus together with the driving bar e²

page_text: and stop pin d** forming a lock to prevent the overdriving of the apparatus whilst
in order to prevent the back action of the driving wheel e. on the return motion of
the tooth or driver e2** a detent is employed consisting of an inclined tooth e*
carried by a weighted arm e' which may be curved to overlay the contrate teeth e'
of the driving wheel e. and is pin-jointed at d* to one of the standards d' so that
the weight of the arm e' acts to normally keep the detent e* in engagement with
the pins or teeth of the driving wheel e.
The leaves or tablets c fall over upon reaching a given point in the revolution
of the apparatus, but in order to regulate their descent and ensure their falling one
by one, an arm or offset 2 from one of the standards d' is employed which offset
carries a curved bar d³ upon its underside formed with inclined teeth * which as
the leaves come round towards the front of the apparatus engage their edges and
separate and hold them until the right moment for their descent as represented
more particularly at Figures 6. and 7.
The upper leaves care thus held erect in a proper vertical position to display
the notice or announcement on one side thereof whilst the preceding leaf or tablet c³
which is hanging vertically from its hinge rod c³ displays its opposite side.
In apparatus of a like character to that herein described there has been a
difficulty in getting the opposite faces of two exposed leaves or tablets e³ in proper
alignment or parallel so as to expose a flat surface for the reason that some of the
recently fallen tablets had a tendency to force forward that which had fallen last,
and thus cause it to assume an inconvenient angle, but according to the present
invention this difficulty is overcome by means of the radial slots which upon
a leaf falling permit the hinge pins or rods c³ of some of the leaves to be carried
slightly to the rear of the apparatus, as represented more particularly at Figure 12.,
thus permitting the exposed leaf or tablet to hang perfectly plumb.
The apparatus herein before described is mounted in the box or case a. which is
provided with a hinged front a¹ which is curved to about the radius described by
the falling leaves, and this front a' which is suitably glazed is secured by a lock or
fastening a² and one end of the case a. is provided with a metal door or removeable
plate as to allow of easy access to the interior of the case a. and to that disc c² fitted
with the removeable segments c* for the purpose of removing or changing the
leaves or plates and consequently the advertisements without disconnecting the
apparatus from the actuating mechanism.
The motive power employed to drive the apparatus may be derived from any
suitable source such, for example, as the opening and closing of a door in a public
building, railway carriage or other vehicle, or, in a railway train, from the brake
or from a suitable handle or lever in the guard's van or elsewhere for the purpose
of indicating stations or displaying advertisements or the like in the separate
carriages comprising the train, or, from the hand brake or other mechanism in
tramcars and other carriages, but when applying the apparatus to a public vehicle
such as an omnibus it may conveniently be operated by the pedal y. which actuates
the brake as represented at Figures 1. and 2. and the meaus for conveying such
motion from the brake lever g. to the device hereinbefore described, and which
means form part of the present invention, will now be described with reference
more particularly to Figures 13., 14., and 15.
On the rock shaft 3 of the apparatus is fixed a crank or offset e which is by a
jointed link or connecting rod e connected with one arm of a bell crank lever f.
mounted upon an axis of motion ƒ* carried by a bracket or plate f** the upper
arm of which lever is acted upon by a rounded nose f* formed upon one end of a
lever mounted upon an axis of motion fi**, and the other end of which lever is
formed with a curved recess fi***, within which acts the short end gl of the pedal
or brake lever g. so that in the downward motion of the short end g² of the pedal
lever 9. in its return to its normal position one end of the rocking lever fl will be
depressed, its opposite end will be raised as represented by the full lines in
Figures 13., 14., and 15., and through the bell crank lever f. the connecting rod et
will be longitudinally moved a given distance and will through the rock shaft e

page_text: cause the driving wheel e. of the apparatus to be rotated the distance of one tooth as
represented by the full lines in Figure 6. thus causing a change in the displayed
leaves or tablets c³.
Upon the depression of the pedal lever g. as indicated by the dotted lines in
Figure 1., in order to bring the brake into action the rocking lever f', the bell
crank lever f. and the rock shaft will be brought into their retracted positions as
indicated by the dotted lines in Figures 6., 13., and 15., and by the full lines in
Figure 16., by means of a strong spring f2* which acts upon the tail of a lever f²
mounted upon an axis of motion f2** and which at its other end is curved to act
upon the rounded end of the short arm of the bell-crank lever f.
By this peculiar construction and arrangement of parts, upon the release of the
brake pedal lever g. after bringing the brake into action the rocking lever f' will
be depressed and will through the bell-crank lever f. connecting rod e and rock
shaft cause the tooth or driver ** to give the desired impulse to the driving
wheel e.
The objects of this peculiar construction and arrangement of parts are twofold,
first, to prevent a too sudden action being imparted to the rock shaft e³ and driving
wheel e. by the short end g' of the pedal or brake lever g in the sudden return
motion of the latter and which without some intervening regulating means might
cause injury to the apparatus, and secondly, to ensure the unfailing action of the
revolving shaft c. and the due falling of the advertisement tablets.
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 :-
1. In an apparatus for displaying advertisements, the combination of a horizontal
shaft mounted in bearings with capability of revolution, two discs fixed upon the
shaft near to each end thereof, a ring of radially disposed slots in cach disc, a
number of hinge rods extending from one disc to the other and loosely mounted in
the slots, a corresponding number of leaves or tablets loosely mounted upon the
hinge rods, a stop for regulating the descent of the leaves and means for giving an
intermittent rotary motion to the shaft, substantially as herein shown and described.
2. In an apparatus for displaying advertisements, the combination of a horizontal
shaft mounted in bearings with capability of revolution, two discs fixed upon the
shaft, a ring of radially disposed slots in each disc, a number of hinge rods
extending from one disc to the other and loosely mounted in the slots, heads upon
one end of the hinge rods, a covering plate for holding the rods in position, recesses
around the slots or a chase in the covering plate to receive the heads of the hinge
rods, a number of leaves or tablets loosely mounted upon the hinge rods, a stop for
regulating the descent of the leaves and means for giving an intermittent rotary
motion to the shaft, substantially as herein shown and described.
3. In an apparatus for displaying advertisements, the combination of a horizontal
shaft mounted in bearings with capability of revolution, two discs fixed upon the
shaft, a ring of radially disposed slots in each disc, a number of hinge rods extending
from one disc to the other and loosely mounted in the slots, a covering plate formed
in several segments for holding the rods in position, a number of leaves or tablets
loosely mounted upon the hinge rods, a stop for regulating the descent of the leaves
and means for giving an intermittent rotary motion to the shaft, substantially as
herein shown and described.
4. In an apparatus for displaying advertisements, the combination of a horizontal
shaft. mounted in bearings with capability of revolution, two discs fixed upon the
shaft, a number of hinge rods extending from one disc to the other, a number of
leaves or tablets mounted upon the hinge rods, a stop for regulating the descent of
the leaves or tablets consisting of a curved arm formed with a number of teeth or
notches therein adapted to engage separate and hold the leaves and means for
giving an intermittent rotary motion to the shaft, substantially as herein shown and
described.

page_text: 5. In an apparatus for displaying advertisements, the combination of a horizontal
shaft mounted in bearings with capability of revolution, two discs fixed upon the
shaft, a number of hinge rods extending from one disc to the other, a number of
leaves or tablets mounted upon the hinge rods, a stop for regulating the descent of
the leaves, a driving wheel fixed upon the shaft separate from the discs and
provided with contrate pins or teeth, a weighted arm provided with a detent tooth
for engaging the contrate teeth of the driving wheel and holding it against
accidental rotation, a reciprocating driving bar adapted to rest against the teeth of
the driving wheel and provided with a tooth or driver located some distance below
the
upper end of the bar and shaped to engage the teeth of the driving wheel in its
upward movement and disengage itself therefrom in its downward movement, a
spring for holding the driving bar up to the driving wheel and means for imparting
a reciprocating movement to the driving bar, substantially as herein shown and
described.
6. In an apparatus for displaying advertisements, the combination of a horizontal
shaft mounted in bearings with capability of rotation, a driving wheel fixed upon
the shaft and provided with contrate pins or teeth, a detent for preventing
accidental rotation of the driving wheel, a reciprocating driving bar adapted to
rest against the teeth of the driving wheel and provided with a tooth or driver
located some distance below the upper end of the driving bar and shaped to
engage the teeth of the driving wheel in its upward movement and disengage
itself therefrom in its downward movement, a spring for holding the driving bar
up to its work, a stop pin for preventing the driving bar receding from the
driving wheel so that the driving tooth, driving bar and stop pin will constitute
a lock to prevent over driving and means for imparting a reciprocating movement
to the driving bar, substantially as herein shown and described.
7. In an apparatus for displaying advertisements, the combination of a horizontal
shaft mounted in bearings with capability of revolution, a driving wheel fixed upon
the shaft and provided with contrate pins or teeth, a detent for preventing
accidental revolution of the driving wheel, a reciprocating driving bar provided
with a tooth or driver shaped to engage the teeth of the driving wheel in its
upward movement and disengage itself therefrom in its downward movement,
a horizontal crank pin-jointed to the driving bar, a vertical crank fixed there-
with, a jointed connecting rod capable of longitudinal adjustment to meet varied
conditions of working by one end pin-jointed to the vertical crank and by the
other end pin-jointed to the vertical arm of a bell crank lever, a rocking lever
formed with a rounded nose for acting upon the horizontal arm of the bell-crank
lever, a curved recess or hollow at the other end of the rocking lever in which
acts, in its return movement, the short end of the pedal brake lever or the like
and a second rocking lever located at right angles to the first and actuated by
a strong spring for acting by its curved end upon the rounded end of the
vertical arm of the bell-crank lever in order to restore the driving mechanism
to its normal position, substantially as herein shown and described.
8. The peculiar construction, combination and arrangement of parts, substantially
as herein shown and described.
Dated this 11th day of March 1905
VAUGHAN & SON,
Agents for the Applicants.