Improved Time Signalling Apparatus for Clocks.
Year: 1895

page_text: Date of Application, 7th June, 1895
Complete Specification Left, 7th Mar., 1896-Accepted, 6th June, 1896*
PROVISIONAL SPECIFICATION.
Improved Time Signalling Apparatus for Clocks.
We, ROBERT POTTS, JAMES POTTS, and JOSEPH POTTS, trading as the Firm
of William Potts and Sons, of Guildford Street, in the City of Leeds, Turret,.
clock Manufacturers, do hereby declare the nature of this invention, to be as
follows:-
. ›
The object of our invention is to do away with the use of signal guns, and give an
audible signal through striking a bell.
According to our invention we employ upon the clock-frame a pivotted weighted
lever which rests on a catch provided with an armature which as soon as the
armature is attracted by an electro-magnet, excited by the "Greenwich " current,
releases the weighted lever and allows it to fall, the weight coming in contact with
toggle or the like mechanism which releases the hammer and causes it to strike the:
hour.
DL: 5th .. of Jun 1905
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds,.
Patent Agent to the Applicants.
Improved Time Signalling Apparatus for COCKS.
We, ROBERT POTTS, JAMES POTTS and JOSEPH POTTS, trading as
William Potts and Sons, of Guildford Street, in the City of Leeds, Turret-clock
Manufacturers do hereby declare the nature of this invention, and in what.
manuer the same is to be performed, to be particularly described and ascertained.
in and by the following statement:-
The object of our invention is to do away with the use of signal guns and give an.
audible signal through striking a bell.
DESCRIPTION OF DRAWINGS.
Fig. 1, is a side elevation showing our invention applied.
Fig. 2, is a plan.
Fig. 3, is a detail view.
According to our invention we employ upon the clock frame A a pivotted:
weighted lever B which rests on a catch C, provided with an armature D.
An electro magnet E being fixed on the frame immediately opposite and is in.
circuit with the "Greenwich" current. The said weighted lever B has also a stud
or catch D¹ in contact (when the parts are in their normal positions) with a.
detent D carried on the "fly" or third arbor D³ of the train which gives the motive
power by weights, as ordinary.
As soon as the armature D is attracted by the electro magnet E (when excited
by the "Greenwich current,) the catch C is turned on its axis so releasing the
weighted lever B, at the same time the stud or catch D' is released, and sets the

page_text: detent D³ and the arbor D³ in motion, which starts the train, so causing the cam
wheel S to move and clear the lever M, carried on the shaft H (at the other side
of the machine) and to which is attached a wire, or rod N, connected up to the
levers (see Fig. 3) for actuating the hammers P. R represents the bell.
Simultaneously the weight F carried on the weighted lever B comes in contact
with a lever F₁ joined to toggle or the like mechanism, which, as shown in the
drawings, consists of a lever G centred on the shaft H', and joined to a folding
link J, which is joined by a fork joint J' to a further lever G¹ joined to or forming
part of the lever F¹; the levers G¹ and F' are centred on the fixed stud F2.
The lever G carries an arm L having a weight K to assist in bringing the parts
to their normal positions when the electro-magnet E is inert.
The weight F in falling upon the lever F depresses the same, and causes the
lever G and link J to fold, and the end of the lever G to rise, the weight K by
this action assuming nearly a vertical position, at the same time the lever M rises'
and tilts the lever O, whereby the hainmer P falls, and strikes the bell R, (see
Fig. 3) so giving the hour.
The parts are returned to their normal positions, when the electro-magnet is inert,
and the hour has been given, by the cam wheel S continuing to revolve until one
of the cams of the said cam wheel has sufficiently depressed the lever M, at the
same time the lever G (being on the same shaft) is also depressed so causing the
lever G and link J to straighten, and the lever F¹ to assume its proper position,
while this is taking place the detent D2 continues to revolve until it comes in contact
with the stud or catch D' on the lever B, which lever B is returned to its
horizontal position by the snail B2 acting on a pin B¹ on the lever B, the said snail
being operated by the action of the train, (the snail being geared up to the main
wheel).
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. The combination with a clock frame of a weighted lever B adapted to rest at
its free end on a pivotted catch C having an armature D, an electro magnet E in
circuit with the "Greenwich" current, and toggle or the like mechanism, arranged
and operating in the manner and for the purposes, substantially as shown and
described:
2. The improved time signalling apparatus for clocks, substantially as shown and
described.
:
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds,
Patent Agent to the Applicants.