Improvements in Electrical Alarum Clocks.
Year: 1892

page_text: te of Application, 17th June, 1892-Accepted, 1st Oct., 1892
COMPLETE SPECIFICATION.
Improvements in Electrical Alarum Clocks.
I, DANIEL JAMES MULLARKY, of 27 Westgate, Bradford, in the County of
York, Jewellers' Salesman, 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 to certain improvements in electrical alarum clocks, and
has for its object, the combination of the electrical part of the apparatus with the
"movement" of the clock or time piece in such a manner that, on the completion
of the electric circuit, an alarum bell will ring for a considerable time until the
circuit is broken by the continued movement of the clock, or by the personal
movement of a switch; and to so arrange the "movement" of the clock or time-
piece and electrical part of the apparatus that, the outward casing has the
appearance of an ordinary clock or time-piece.
Hitherto electrical batteries have been applied to clocks having a mechanical
alarum, the contact being made through the alarum.
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By my arrangement the apparatus may be applied to time pieces or striking
clocks, thereby making the "contact more direct, and with less liability of the
apparatus getting out of order.
In order that my invention may be fully understood, I will describe the same in
detail by making reference to the accompanying sheet of drawings in which
Fig. 1. represents a back view of the clock, shewing the connections between the
movement and the electrical part of the apparatus and Figs. 2 and 3. are enlarged
details.
The movement A. of the clock, is of the ordinary construction having the usual
dial wheels for operating the hour and minute hands. On to the boss B. of the
hour wheel, I place an ordinary alarum dial, having the snail C. secured thereto in
the usual manner. To the front plate D. I mount the additional lever E on the
screw stud F as fulcrum, such lever being kept in contact with the snail C. by
means of the spring G.
The alarum is "sett" in the usual manner similar to that of an ordinary alarumi
clock, and when the clock has arrived at the hour it is intended the alarum should
ring, the snail C. will have arrived at the position as shewn by Fig. 2. thus allowing
one end of lever E to drop into the notch H. the opposite end at E' of said lever
coming in contact with the terminal J. thereby completing the circuit between the
battery K. and magnet L. thus causing the alarum to ring, such ringing continuing
until the current is broken by the personal movement out of contact of the
switch M. secured to the side of the clock case, or until the snail C raises the end
of lever at E' clear of the terminal J.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination of an electrical battery with an ordinary time piece or
striking clock, arranged substantially in the manner herein before described.
2. The combination of the electrical apparatus with lever E. snail C. and clock
movement A. arranged substantially in the manner as hereinbefore described.
Dated this 16th day of June 1892.
JOHN WAUGH,
Agent.