Improvements in Clocks.
Year: 1894

page_text: Date of Application, 23rd July, 1894
Complete Specification Left, 16th Nov., 1894-Accepted, 22nd Dec.,
1894
PROVISIONAL SPECIFICATION.
Improvements in Clocks.
I, JAMES COHEN of 12, Elswick Road, Lewisham, Kent, Gentleman, do hereby
declare the nature of this invention to be as follows:-
My invention relates to improvements in clocks and has for its object to provide
a device to replace the pendulum whereby the clock may be caused to beat true
seconds and at the same time can be made extremely small so as to occupy but
little space, whereas with clocks of ordinary construction furnished with a pendulum
beating true seconds it is necessary for the latter to be somewhere about 40 inches
in length and consequently necessitating the use of a case of considerable size to
contain it.
In carrying my invention into practical effect I furnish the outside of the back
plate of the clock with a small block within a slot of which is contained one end
of a short flat spring secured there by means of screws or in any suitable manner
while the free end of the spring enters the slotted end of a short rod furnished
with a weight at the other end which is capable of being raised or lowered by
means of a screw, the whole being arranged vertically so as to be free to sway
from side to side when actuated by the crutch of the clock similarly to an ordinary
pendulum, the end of the said crutch being bent and passing through a slot formed
in the back plate of the clock for that purpose.
1004
Improvements in Clocks.
I, JAMES COHEN of 12, Elswick Road, Lewisham, Kent, Gentleman, 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:-
but
My invention relates to improvements in clocks and has for its object to provide
a device to replace the pendulum whereby the clock may be caused to beat true
seconds and at the same time can be made extremely small so as to occupy
little space, whereas with clocks of ordinary construction furnished with a pendulum
beating true seconds it is necessary for the latter to be somewhere about 40 inches
in length and consequently necessitating the use of a case of considerable size to
contain it.
In carrying my invention into practical effect, I furnish the outside of the back-
plate of the clock with a small block within a slot of which is contained one end
of a short flat spring secured there by means of screws or in any suitable manner,
while the free end of the spring enters the slotted end of a short rod furnished

page_text: with a weight at the other end which is capable of being raised or lowered, the
whole being arranged vertically so as to be free to sway from side to side when
actuated by the crutch of the clock similarly to an ordinary pendulum, the end of
the crutch carrying a fork which passes through, a slot in the back-plate of the
clock for this purpose.
In order that my invention may be more fully understood, I will now proceed to
describe same with reference to the accompanying drawings in which
Fig. 1 is an outside elevation of the back-plate of a clock fitted with my
improved device and
Fig. 2 is a side elevation of the mechanism shown in Fig. 1.
Fig. 3 shows a modification in the form of the device.
According to my invention the back-plate B of the clock is furnished with a
block 6 within a slotted part of which is secured one end of the springs by means
of. screws. The other end of the spring enters the slotted end of the rod r
where it is secured by means of screws s³, while the upper portion of the said rod
is screw-threaded and carries the weight w. This rod is actuated so as to sway to
and fro for the purpose of controlling the clock by means of pins pl projecting
from the plate p³ carried by the crutch c (Fig. 2) which is actuated by the pallets.
and scapewheel x in the usual manner, the said pins passing through the slot y in
the plate B. The clock is regulated by raising or lowering the weight w on the
rod r and a cross piece c is provided for firmly holding the said rod when screwing
the said weight up or down so as to prevent the springs from being twisted.
In some cases where it would be inconvenient to raise or lower the weight w or
where there would not be sufficient space for this purpose, I provide a device for
regulating the clock which is shown attached to same in Fig. 1. This consists of a
rectangular case g, having lugs g¹ by means of which it can be attached to the
back of the clock, and furnished inside with a sliding block g³ which is capable of
being raised or lowered by means of the screw 9³ when actuated by the knob or
button n.
The sliding block 92 carries a projecting arm a one end of which engages
with the springs so that by raising the said block and consequently the arm,
the available length of the rod or spring is shortened or increased according to
requirements.
In the modified form shown at Fig. 2 the rod r is bent to one side so that
the weight w would be moved more in an up and down direction than from side to
side.
This form can be used where a bell or other mechanism is required to be affixed
to the back-plate of the clock while it would be actuated in all other respects in
exactly the same manner as the one herein before described.
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 :-
:
The improved means for controlling and regulating clocks, arranged and
constructed substantially as herein described and shown and for the purposes set
forth
Dated this 15th dan of NAT
1004
noted this 15th day of November 1801.
F. G. CASSELL,
Of Cassell & Co.,
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.