An Alarm Casket.
Year: 1889

page_text: .
Date of Application, 16th Feb., 1889
Complete Specification Left, 18th Nov., 1889-Accepted, 8th Feb., 1890
IRUVIDIŲNAL SPECIFICATION.
An Alarm Casket.
I, JAMES ENRIGHT Electrician 202 Holland Road Kensington do hereby declare
the nature of this invention to be as follows:-
The object of my invention is to produce a casket which cannot be removed
except under certain conditions herein after mentioned without the production of
sound.
In a convenient part of the casket preferably the base a train of clock work is fixed
which is operated by a coiled spring. When the casket is set down anywhere its
weight directly or indirectly causes a pin to engage a tooth of one of the outer
wheels of the train and so prevent rotation of the wheels. When the casket is lifted
up the pin is drawn away from the wheel by a spring and the clock-train is set in
motion by the action of the coiled spring. One of the wheels when in motion in
conjunction with a spring causes a hammer to strike a bell suitably fixed in the
casket.
The pin which restrains the clock-train when the casket is set down is controlled
by two other minor pins in such manner that the weight of the casket or pressure
of any kind acting on the restraining pin alone does not prevent sound as the two
minor pins latch it, and it is not until the three pins are subjected to the weight of
the casket that the clock-train is restrained. The extremities of these three pins form
legs on which the casket partly or entirely rests.
The casket however may be removed without producing sound by one who knows
its construction by pressing on two buttons suitably placed. The effect of pressure
on one of these is the unlatching of a bolt which is depressed by the other. The
bolt when depressed engages a tooth of one of the wheels of the train and so prevents
the operation of the sounder, and the bolt must be kept depressed as long as the
casket is held in the hands in order to keep it silent. When however it is set down
on the three legs aforesaid the bolt is brought back to its original position by a
spring and automatically latched.
Dated this 15th day of February 1889
COMPLETE
SPECIFICATION.
An Alarm Casket.
1, JAMES ENRIGHT Electrician of 202 Holland Road, Kensington 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:
The object of my invention is to produce a casket which cannot be removed
without the production of sound.
In a convenient part of the casket preferably the base a train of clock-work is
fixed which is operated by a coiled spring. When the casket is set down anywhere
its weight directly or indirectly causes a pin to act on the train so as to prevent the
rotation of the wheels. When the casket is lifted up the pin no longer acts and the
clock-train is set in motion.
The pin which restrains the clock-train when the casket is set down is controlled
by two other pins in such manner that the weight of the casket or pressure of any
kind acting on any one pin does not prevent sound and it is not until the three pins
are subjected to the weight of the casket that the clock-train is restrained. The
extremities of these pins form legs on which the casket partly or entirely rests.

page_text: In carrying out my invention I support a circular plate of metal which I shall call
the check-piece by three spiral springs. These are attached to it at three equi-distant
points. The other ends of these springs are attached to three supports fixed at three
equi-distant points on the inner surface of the bottom of the casket, box, or containing
vessel to which I may apply my invention. From the centre of the "check-piece
a hub projects downwards. Its tip is at a distance of from one to two inches from
the bottom of the casket.
Fig. I of the Drawings is a plan showing the position of the parts. The "check-
piece" c is supported by the springs attached to the supports which are fixed to
the bottom of the casket. The levers L pivoted at p are attached to the springs s at t.
K is the sounder, and a represents an ordinary alarm movement the hammer of
which passes under the "check piece" w. Fig. II is a vertical section through the
line gt Fig. I. When the casket is set down the pin v is forced up lifting the end g
and depressing the end of the lever L. This movement causes the depression of
the hub w to the extent of about one-third of its original distance from the bottom
of the casket. The same movement on the part of the two other levers causes the
hub to touch the bottom and so prevent the vibration of the hammer-attached to m.
When even one leg or pin v (Fig. II) is lifted the springs partly regains its original
position drawing the hub away from the vibrator m and so causing the operation of
the alarm. The movement of the leg is limited by the flange coming into contact
with the bottom h. n are the uprights on which the levers L'are pivoted.
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b
The spindle carrying the spring which operates the alarm movement projects
upwards through the partition which encloses the clock-train and its accessories,
and the winder is applied to it when the casket is open.
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 1
claim is
(1) A casket which cannot be removed without the production of sound substantially
as herein described.
(2) A casket resting on three legs which must be acted on simultaneously by
weight or pressure in order to render inoperative an alarm movement contained in
it substantially as herein described.
Dated this 16th day of November 1889
J. ENRIGHT.