Improved Automatic Memorandum Clock.
Year: 1896

page_text: Date of Application, 14th July, 1896
1067
10th
1077
Date of Application, 14th July, 1896
Complete Specification Left, 14th Apr., 1907 Accepted, 10th June, 1907
Improved Automatic Memorandum Clock.
We; JOHN DAVIDSON Watchmaker, and THE AUTOMATIC MEMORANDUM
CLOCK COMPANY LIMITED, both of 42 Holborn Viaduct, in the City and
County of Lordon, do hereby declare the nature of this invention to be as
follows:-
This invention relates more particularly to that type of automatic memorandum
clock embraced in Patent No. 706 granted to Jolin Davidson and dated the
14th of January A.D. 1891 in which the starting of an alarm is effected through
the medium of tablets inserted in a drum revolved by an ordinary clock
movement.
In clocks constructed and operating according to the above mentioned patent
the drum during its revolution drops the previously inserted tablets on to a
platform which is thereby operated to effect the starting of the alarm. Now my
primary object is to dispense with the necessity of the tablets being so dropped, by
arranging that these may operate the alarm as they revolve with the drum.
As constructed according to my present invention the clock may be arranged
with its dial in either a vertical or horizontal plane as desired and I will describe
one with a horizontal dial.
Secured in a case or frame of suitable construction is a clock movement of any
ordinary type and to the spindle of this, which usually carries the hour hand, is
secured a drum divided into a prearranged number of radial pockets suitably
marked.
An index finger forming the hour hand is secured to or formed on the upper
surface or edge of this drum and moved over an annular dial, whilst the usual
minute hand is arranged as heretofore in clocks of ordinary construction.
The outer ends of the radial pockets in the drum are open and into the annular
opening thus formed in the periphery of the drum projects one end of the operating
lever or arm or the like, which when turned or operated as the drum revolves by a
tablet previously inserted in one or the other of the pockets to allow the latter to
pass it, starts the alarm, which may be either an electric or mechanical one.
The position of the switch or the like operating the alarm, may be indicated on
the dial or otherwise, so that when the alarm is started, the required tablet may be
withdrawn and examined, whilst the case may be provided with a hinged bevel of
Euitable construction.
CASTLE SMITH,
"Invention" Office, Mitre Court, Fleet Street, London, E.C.,
Agent for the Applicants.

page_text: Improved Automatic Memorandum Clock.
We, JOHN DAVIDSON, Watchmaker, and THE AUTOMATIC MEMORANDUM
CLOCK COMPANY LIMITED, both of 42 Holborn Viaduct, in the City and
County of London, 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:-
This invention relates more particularly to that type of automatic memorandum
clock embraced in Patent granted to John Davidson and numbered 706 A.D. 1891,
in which the starting of an alarm is effected through the medium of tablets inserted
in a drum revolved by an ordinary clock movement.
In clocks constructed and operating according to the above mentioned patent the
drun during its revolution drops the previously inserted tablets on to a platform
which is thereby operated to effect the starting of the alarm.. Now our primary
object is to dispense with the necessity of the tablets being so,dropped, by arranging
that these may operate the alarm as they revolve with the drum.
As constructed according to our present invention the clock may be arranged
with its dial in either a vertical or horizontal plane as desired, and we will describe
one with a horizontal dial.
Secured in a case or frame of suitable construction is a clock movement of any
ordinary type and to the spindle of this, which usually carries the hour hand, is
secured a druma divided into a prearranged number of radial pockets suitably
niarked.
An index finger forming the hour hand is secured to or formed on the upper
surface or edge of this drum and moved over an annular dial, whilst the usual
minute hand is arranged as heretofore in clocks of ordinary construction.
The outer ends of the radial pockets in the drum are open and into the annular
opening thus formed in the periphery of the drum projects one end of the operating
lever or arm or the like, which when turned or operated as the drum revolves by
a tablet previously inserted in one or the other of the pockets to allow the latter to
pass it, starts the alarm, which may be either an electric or mechanical one.
An alarm clock constructed according to our invention is illustrated by the
accompanying drawings and by the aid of these we will now further describe the
same and the manner in which it may be carried into practical effect.
Of these drawings Fig. 1 is a sectional elevation and Fig. 2 a plan of a clock
(having a portion of the face broken away to show the electrical connections)
baving a horizontal dial combined with an ink stand.
In the frame a which carries the ink wells b is secured a clock movement c of
any suitable construction, either by the aid of stays d or otherwise. On the
spindle e of this movement is mounted a drum f divided into a number of radial
pockets suitably marked.
This drum carries an index finger g forming the hour hand of the clock, and
arranged to move over an annular dial whilst the minute hand is arranged as in
a.clock of ordinary construction.
The outer ends of the pockets in the drum are open so that an arm or other
portion operating an alarm may project into the annular recesses so formed to such
an extent that it will be operated as the drum revolves by a previously inserted
tablet, such as k and an alarm sounded.
The alarm may be an electric or mechanical one, as desired, but as shown in the
illustration it is electrical, the ends of the circuit being connected to the arm and
the contact m so that when said arm is turned against the pressure of a spring n
by a tablet carried by the drum striking one end of it, its opposite end will be

page_text: forced against the contact m and so complete the circuit through the hello and
battery p.
The position of the switch or the like operating the alarm may be indicated on
the dial or otherwise, so that when the alarm is started the required tablet may be
withdrawn and examined, whilst the case a may be provided with a hinged bevel a¹
of suitable construction.
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.) Automatic memorandum apparatus consisting of a drum revolved by means
of a clock movement and provided with pockets on which tablets may be so carried
that they will operate a part governing an alarum as said drum is revolved.
(2.) Automatic memorandum apparatus constructed arranged and operated
substantially as described and illustrated by the accompanying drawings.
(3.) In automatic memorandum apparatus a drum f having radial pockets formed
therein which have their outer ends open substantially as and for the purpose
described and illustrated by the accompanying drawings.
Dated this 12th dor of April 1897
CASTLE SMITH,
"Invention" Office, Mitre Court, Fleet Street, London, E.C.,
Agent for the Applicants.