Improvements in Electric Alarum Clocks.
Year: 1891

page_text: Date of Application, 18th Nov., 1891
Complete Specification Left, 9th Aug., 1892-Accepted, 12th Nov., 1892
PROVISIONAL SPECIFICATION.
Improvements in Electric Alarum Clocks.
1 JAMES NICHOLLS of Lowtown, Pudsey, near Leeds, in the County of York,
Watch and Clock Maker, do hereby declare the nature of this invention to be as
follows:
The object of my invention is to construct apparatus in connection with alarum
clocks in such a manner that the alarum part when set in action causes an electric
bell to sound, such bell continuing to ring until the communication is disconnected
by a suitable switch.
In my improvements I employ an ordinary dry or "Leclanche" electric battery,
cnclosed in a suitable case or cover, and over which is fixed the alarum clock. The
electric bell is attached to the front of the said case or cover and connected to the
battery in the usual way.
In connection with the alarum part of the clock I provide a small rod which is
moved by said alarum part on coming into action at the required or fixed time.
The said small rod on moving as aforesaid causes a hammer to fall, which is forced
downwards by a suitable spring onto a copper or brass piece, which is connected by
a suitable wire to the battery, thus completing the electrical circuit and causing
the electric bell to ring until the communication is broken by the switch, which is
forced between the aforesaid hammer and copper or brass piece.
The whole apparatus is self contained and may be moved from place to place as
required.
In this arrangement the bell which is usually fixed over the clock, is dispensed
with.
JAMES NICHOLLS.
COMPLETE SPECIFICATION.
Improvements in Electric Alarum Clocks.
I, JAMES NICHOLLS, Lowtown Pudsey near Leeds in the County of York
Watch and Clock Maker do hereby declare the nature of this invention and in
what manner the same is to be perforined, to be particularly described and ascer-
tained in and by the following statement :-
The object of my invention is to construct apparatus in connection with alarum
clocks, in such a manner that the alarum part when set in action causes an electric
bell to sound, such. bell continuing to ring until the communication is disconnected
or the current switched off.
Fig. 1, is a back elevation showing my improvements applied.
Fig. 2, is a side elevation, and
Fig. 3, is a plan.
In carrying out my said object I employ an ordinary dry or Leclanché battery A
enclosed in a case or cover B over which is fixed an alarum clock C (only partially
shown but sufficiently to enable my invention to be understood). The electric
bell D is attached to the front of the case or cover B and connected to the battery A
in the usual way.
E is the box covering electro-magnets. F is the hammer of
G is a rod connected with the alarum apparatus and which is moved by the said
the bell D.

page_text: alarum apparatus on coming into action at the required or fixed time. The rod G
on moving as aforesaid causes a hammer H to fall which is also assisted or forced
downwards by a spiral spring J on to a copper or brass contact piece K (which is
connected by wire to the battery in the usual way) so completing the circuit and
causing the bell D to ring until the current is switched off, which is effected by
means of rod L (working in a slot L' in the front of the case) pivoted at M and
terminating in a block or end N in the form of an inclined plane. On moving the
rod L to stop the bell ringing the block or end N raises the hammer H from off
the contact piece K, and so switches off the current.
The whole apparatus is self contained and may be moved from place to place as
required.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is :-
1. The construction and use of a self contained and portable electric alarum
clock consisting in the combination of the battery A, alarum clock C, bell D-and
electro-magnets within the box E, operating in the manner and for the purposes
set forth.
2. In an electric alarum clock the combination of the rod G connected with the
alarum apparatus, spring J, contact-piece K, pivoted rod L and block or end N
whereby the electric circuit can be completed or broken in the manner and for the
purposes set forth.
Dated this 8th day of August 1892.
JAMES NICHOLLS.