Improved Mechanism Chiefly Designed for use in Automatic Advertising Apparatus.
Year: 1890

page_text: Date of Application, 9th Aug., 1890
Complete Specification Left, 9th May, 1891-Accepted, 13th June, 1891
PROVISIONAL SPECIFICATION.
Improved Mechanism Chiefly Designed for use in Automatic
Advertising Apparatus.
1, HENRY WILLIAM HART-DAVIES DUMARESQ, of the Army and Navy
Club, Pall Mall, in the County of Middlesex, Lieutenant-Colonel, R.E., do hereby
declare the nature of this invention to be as follows:
My invention relates to apparatus for automatically exhibiting pictorial and
other advertisements and more especially to apparatus of that kind or class
described in the Specification accompanying former Letters Patent granted to
Alfred William Armstrong, No. 17326, dated November 28th A.D. 1888, and
comprises various improvements hereinafter set forth.
Some of my said improvements are however also advantageously applicable for
other purposes.
An important feature of my said invention consists in improved means for
automatically changing the said pictorial or other advertisements at predetermined
intervals or periods so that any desired number of different advertisements may be
automatically exhibited one after the other.
Another feature of my said invention is the provision of improved means for
automatically relighting or extinguishing the lamp at predetermined periods.
In carrying my said invention into practice I provide a suitable train of
clockwork for governing the apparatus and which is arranged in any convenient
position in close proximity to another train of clockwork or other motive power
for rotating the pictures or other advertisements. Upon one of the shafts or
arbors of the governing train of clockwork or upon an independent shaft or arbor
driven therefrom, I provide a cylindrical piece or disc having grooves or recesses
formed therein at opposite sides thereof, but not in the same plane with each other.
Upon one of the shafts or arbors of the train of clockwork or other motive
power for rotating the pictorial or other advertisements, or upon a shaft or arbor
geared therewith I provide a detent lever. This detent lever is firmly secured at
or near its centre to the said shaft or arbor and the extremities thereof are adapted
to engage with the full portions of the hereinbefore mentioned cylindrical piece,
or disc, so that the said train of clockwork cannot operate until the said detent
lever is released as hereinafter described. The said detent lever is so curved or
shaped that each of the extremities thereof is capable of passing through the
corresponding groove or recess in the said cylindrical piece
or disc. When the
said cylindrical piece or disc is rotated through a certain angle by the governing
train of clockwork the extremity of the above mentioned detent lever drops or
passes through the groove or recess that corresponds or is in line therewith, and
the detent lever is capable of performing half a revolution under the action of the
train of clockwork or other motive power thereby permitting the latter to rotate or
operate for a predetermined period and bring another picture or advertisement in
front of the magic lantern or other lenses. The other arm of the detent lever then
engages with the said cylindrical piece or disc, and when the latter has been
moved into the r: quired position in its turn falls or passes through the corresponding
groove or recess and perinits the said detent to perform half a revolution as before.
This action takes place alternately at predetermined intervals so long as the
governing train of clockwork is working.
The release of the above mentioned detent lever and the consequent operation
of the train of clockwork or other motive power for changing the pictures or
advertisements, can be arranged to take place at any predetermined intervals by

page_text: varying the speed of the said grooved or recessed cylindrical piece or disc, or the
diameter thereof.
I
For this
According to another part of my said invention I provide improved mechanism
for relighting and extinguishing the lamp at predetermined periods.
purpose provide a suitable train of clockwork comprising an actuating spring or
weight, suitable gearing, and a flier of any well known construction. To one of
the shafts or arbors of this train of clockwork is firmly secured a detent lever
substantially similar to that herein before described. I provide moreover another
shaft or arbor supported in suitable bearings in the frame of the said train of
clockwork and driven by means of suitable gearing from the governing train of
clockwork and preferably at half or approximately half the speed of the hour
hand thereof or so as to make one complete revolution in every twenty four
hours. Upon this shaft or arbor I arrange a suitably graduated disc or dial
having an elongated boss upon which are adapted to fit two collars having grooves
or recesses cut or formed therein, and provided with suitable indexes or pointers.
The above mentioned sleeve upon the graduated disc or dial is formed somewhat
less in length than the combined thickness of the said cut away collars, and the
extremity of the shaft or arbor upon which the said disc or dial and collars are
mounted is screw-threaded. A suitable collar is moreover firmly secured to or
formed on the said shaft or arbor against which the rear portion of the said
graduated disc or dial bears, and the latter and the grooved collars can be secured
to, and caused to travel with the said shaft or arbor by means of a thumb mut or
wing nut screwed upon the said screw-threaded extremity thereof.
The extremities of the hereinbefore mentioned detent lever are adapted to
engage alternately with one or other of the said grooved or cut away collars, the
train of clockwork mechanism connected therewith being permitted to operate
when but not until the said detent lever is allowed by the rotation of the said
graduated disc or dial and grooved, recessed or cut away collar to pass through the
groove or recess therein, and perform a half revolution. The other extremity of
the said detent lever engaging with the full portion of the other grooved
recessed collar.
or
The said clockwork again operates and the detent lever performs another half
revolution when the last mentioned grooved or recessed collar is moved in like
manner so that the said detent lever is permitted to fall or pass through the
groove or recess therein. The sail train of clockwork governed by the detent
lever is connected (when a gas lamp is employed) in any convenient manner to a
stop cock or valve for admitting a supply of gas to the lamp and with an electric
switch for temporarily closing or completing an electric circuit to an ordinary
electric lighter of any well known construction. The said connection may be so
arranged that the first operation of the train of clockwork governed by the above
mentioned detent lever will turn on the supply of gas as above mentioned and
close or complete the electric circuit to the lighter for a sufficient length of time
to light the said lamp, and the subsequent or succeeding operation of the said train
of clockwork will cut off the said supply of gas or turn it into a by-pass and thus
extinguish or put out the lamp.
When an electric lamp is employed the said train of clockwork is arranged
simply to close or complete an electric circuit to the said lamp at one operation,
and break or interrupt the said circuit at the next or succeeding operation.
To permit the automatic release of the said detent lever and the consequent
operation of the train of clockwork governed thereby at any predetermined
intervals or periods twice in each twenty four hours I divide the said graduated
disc or dial into twenty four parts or divisions. In order to set either of the
grooved or recessed collars to release the detent lever at a given hour the index or
pointer thereof is set to the required division upon the said graduated disc or dial
the thumb nut or wing nut being slackened for that purpose, and again tightened
when the said collar is properly adjusted. The said graduated disc or dial
moreover may be if necessary altered or adjusted to the correct time by rotating

page_text: the same upon its shaft or arbor when the thumb nut or wing nut is slackened.
A fixed mark or index is provided upon the frame for convenience of adjusting
the said graduated disc or dial.
It will be readily understood that the above described improved mechanism may
be advantageously employed wherever it is desirable to automatically relight or
extinguish a lamp or lamps at predetermined intervals.
Although I have hereinbefore described a convenient and advantageous method
of carrying my said invention into practice it is obvious that I can somewhat
modify the construction of my improved apparatus without however in any way
departing from the nature of my said invention. For instance the detent lever
may be provided with any other suitable number of arms in accordance with its
relative position to the train of clockwork, instead of with two arms as hereinbefore
described.
Dated this Oth dow of August 1800
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COME ILM
Improved Mechanism Chiefly Designed for use in Automatic
Advertising Apparatus.
I, HENRY WILLIAM HART-DAVIES DUMARESQ, of the Army & Navy Club,
Pall Mall, in the County of Middlesex, Lieutenant-Colonel, late R.E., 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: -
My invention relates chiefly to apparatus for automatically exhibiting pictorial
and other advertisements and is more especially designed to improve the con-
struction and increase the efficiency of apparatus of the kind or class described in
the Specification of former Letters Patent granted to Alfred William Armstrong
dated the 28th November A.D. 1888 No. 17,326.
My said invention comprises improved means for automatically effecting without
the use of a battery, the release at predetermined intervals or periods of a clock-
work or other suitable motor for changing the position of pictorial or other
advertisements so as to exhibit in succession any desired number thereof.
My said invention also comprises improved means for automatically releasing at
predetermined intervals or periods a clockwork or other motor for effecting the
alternate lighting and extinguishing of the lamp.
Some of my said improvements are also advantageously applicable for other
purposes.
In the accompanying drawing I have shown how my said invention may be
conveniently and advantageously carried into practice.
Figure 1, is a front elevation, some of the parts being removed, and
Figure 2 is a side elevation partly in vertical section some of the parts being
removed illustrating one form of my improved apparatus.
Figure 3 is a front elevation, and
Figure 4 is a side elevation partly in vertical central section both drawn to an
enlarged scale, showing details of construction hereinafter described.
Like letters indicate corresponding parts throughout the drawings.
A. A. are the plates or frames carrying the mechanisın; B is a suitable clock for
governing the apparatus as hereinafter described; B' is the dial and B² is the hour
hand of the said clock C is the disc or wheel carrying the pictorial or other
advertisements; D is a clockwork motor for imparting rotary motion to the said
disc or wheel C, E is another clockwork motor for automatically effecting the

page_text: alternate lighting and extinguishing of the lamp at predetermined periods, as
hereinafter described.
ais a cylindrical piece or dischaving grooves or recesses a¹ formed therein at opposite
sides thereof and in different planes. The cylindrical piece or disc a is mounted
upon a shaft or spindle supported in suitable bearings in the plates or frames A,
and geared by means of a toothed wheel or pinion with one of the toothed wheels
of the governing train of clockwork B. c is a detent or two armed lever firmly
keyed or otherwise secured at or near its centre upon a shaft or arbor d supported
in suitable bearings in the frames or plates A. dis a toothed wheel or pinion fixed
upon the shaft or arbor d and geared with one of the toothed wheels of the train
of clockwork D. The said detent lever c is so shaped that each of the extremities
thereof is capable of passing through the corresponding groove or recess a¹ in the
said cylindrical piece or disc a, as shown in dotted lines in Figure 1. The said
extremities are morcover adapted to engage with the full portions of the said
cylindrical piece or disc a as shown in full lines in Figure 1 so that the train of
clockwork D cannot operate until the said cylindrical piece or disc is rotated through
a certain angle by the governing clock B when the detent lever is released and
performs half a revolution under the action of the train of clockwork D, the other
arm of the said detent lever then engaging with the full portion of the said
cylindrical piece or disc. The clockwork D is thus permitted to rotate or operate
for a sufficient length of time to bring another picture or advertisement in front of
the magic lantern or other lenses. The alternate release of one or other arm of the
detent lever takes place at predetermined intervals so long as the governing
clock B is working. c c are vanes or blades secured to or formed on the
detent arm or lever c and intended to offer a resistance or obstruction when
passing through the air during the partial rotation of the latter and thus prevent
their rotating too rapidly.
The release of the above mentioned detent lever and the consequent operation
of the train of clockwork D for changing the pictures or advertisements can be
arranged to take place at any predetermined intervals or periods either by so
connecting the shaft or spindle & carrying the grooved or recessed cylindrical
piece or disc
with the said clock that it will be caused to rotate at a
greater or less speed, or by varying the notches in the cylindrical piece or disc a,
or the number of the arms of the detent lever c.
u,
To permit the operation at predetermined intervals of the train of clockwork E
for alternately lighting and extinguishing the gas or other lamp I provide the
following mechanism, that is to say, e is a detent or two armed lever substantially
similar to the detent or lever c. The vanes or blades however are omitted and
a separate fan or flier e¹ is provided for regulating the speed of the train of
clockwork E when released as hereinafter described. The detent or two armed
lever e is mounted upon a shaft or arbor / supported in a suitable bearing in the
front frame or plate A and in a plate A secured to the latter by suitable distance
pieces. The said shaft or arbor f is geared through a toothed wheel y with one
of the toothed wheels of the train clockwork E. is a shaft or arbor also supported
in suitable bearings in the frames or plates A and geared through a toothed
wheel with one of the toothed wheels of the governing clock B. The shaft
or arbor is preferably arranged to be driven by the governing clock B. at half
or approximately half the speed of the hour hand thereof or so that it will make
one complete revolution in every twenty-four hours. is a suitably graduated disc
or dial mounted upon the shaft or arbor and having an elongated boss jas
more clearly shown in Figure 4. k, k, are cams or collars adapted to fit spring
tight upon the said boss and having grooves or recesses 'cut or formed therein as
shown more clearly in Figure 3. k,, are indexes or pointers one of which is
formed on or firmly secured to each of the said cams or collars k. is a collar
pinned, keyed or otherwise firmly secured to the shaft or arbor h. The boss jis
formed somewhat less in length than the combined thickness of the cams or
collars k. m is a thumb-nut or wing-nut fitted upon the screw-threaded end of the

page_text: shaft or arbor and adapted to clamp or secure the said cams or collars and disc
or dial firmly in position against the said collar 1. is another collar pinned,
keyed or otherwise firmly secured to the shaft or arbor h, for preventing end wise
movement thereof.
Each of the arms of the detent lever e is so shaped that the extremity thereof
is adapted to engage with one or other of the said grooved or cut away collars k
and arrest the movement of the train of clockwork E, or to pass through the
corresponding groove or recess and thus permit the movement of the said
clockwork in a manner substantially similar to the herein before mentioned lever .
When it is desired to effect the release of the detent levere and permit the
operation of the train of clockwork E to relight and extinguish the lamp at pre-
determined intervals or periods in each twenty-four hours, the graduated disc or
dial is divided into twenty four parts or divisions. n is a fixed mark or index
secured to the front frame or plate A for convenience of adjusting or setting the
said graduated disc or dial to the correct time. When a gas lamp is employed,
the train of clockwork E is connected in any convenient manner with the gas supply
tap or valve, and with an electric switch for temporarily closing or completing an
electric circuit to an electric lighter of any well known construction, or the said
gas-lamp may be provided with a pilot fight. The said connection may be so
arranged that the first operation of the train of clockwork E will turn on the supply
of gas as above mentioned and (when an electric lighter is employed) close or
complete the electric circuit to the lighter for a sufficient length of time to light
the said lamp, and the subsequent or succeeding operation of the said train of
clockwork will cut off the said supply of gas, or turn it into a by-pass and thus
extinguish or put out the lamp.
When an electric lamp is employed, the said train of clockwork is arranged to
close or complete an electric circuit to the said lamp at one operation, and break or
interrupt the said circuit at the next or succeeding operation.
In order to set either of the grooved or recessed cams or collars k to effect the
release of the detent lever eat a given hour the thumb-mut or wing-nut mis
slackened, and the corresponding index or pointer is set to the required division
upon the graduated disc or dial, and the said thumb-nut again tightened. If
necessary the graduated disc or dial j is adjusted or set to the correct time with the
mark or index n by rotating the said graduated disc or dial on the shaft or arbor
while the thumb-nut or wing-nut m is slackened.
It will be readily understood that the above described improved mechanism or
a portion of it may be advantageously employed for other purposes.
For instance
the improved mechanism for automatically effecting the release of clockwork or
other motor apparatus may be used whenever it is desirable to alternately light
and extinguish a lamp or lamps at predetermined intervals.
It is obvious moreover that I can somewhat modify the construction of my
improved apparatus. For instance the hereinbefore mentioned detent levers or
either of them may be provided with any other suitable number of arms in accord-
ance with its relative position to the train of clockwork instead of with two arms
as hereinbefore described. The graduated disc or dial may be subdivided into any
suitable number of parts and may be so driven from the governing train of clock-
work as to perform any desired number of revolutions in the twenty four hours.
Instead of the sets or trains of clockwork above described, other suitable motors
may if desired, be employed.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I wish it understood that
I claim
First. The improved device for automatically effecting the release of a
clockwork or other motor at predetermined intervals or periods comprising a detent
lever having one or more arms, with or without vanes or blades, and a cylindrical
piece or disc provided with a corresponding number of recesses or grooves and

page_text: arranged to be rotated by a clock or other suitable motor, substantially as, and
for the purposes, above specified.
Second. The modification of my improved device wherein provide for regu-
lating the intervals or periods at which the release of the clockwork or other
motor will be automatically effected, substantially as above specified.
Third. The combination of a clockwork or other motor for changing the pictorial
or other advertisements, a detent lever connected with the said motor and a
governing clock provided with a grooved or recessed cylindrical piece or disc for
alternately releasing the said detent lever substantially as described.
Fourth. The combination of a clockwork or other motor for changing the
pictorial or other advertisements a clock for regulating or controlling the action
of the said motor, and a clockwork or other motor also controlled by the said
clock for alternately lighting and extinguishing a lamp, substantially as herein-
before described.
Fifth. The improved device, comprising the graduated disc or dial, the
adjustable notched or recessed cams or collars, and the thumb-nut or wing-nut,
substantially as described, whereby provide for varying the intervals between the
operations of lighting and extinguishing the lamp and for bringing the clock to
time, as above specified.
Sixth. In an automatic advertising apparatus the provision of suitable means for
automatically effecting, without the aid of electricity, the release at predetermined
intervals of a clockwork or other motor for alternately lighting and extinguishing
a lamp as above specified.
Seventh. The improved apparatus constructed substantially as described with
reference to the accompanying drawings and operating as and for the purposes,
above specified.
Dated this 5th day of May 1891.
HENRY WILLIAM HART-DAVIES DUMARESQ,
Lt. Col. late Royal Engineers.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.