Improvements in Alarms for Use in connection with Safes, Cash Boxes, and the like.
Year: 1894

page_text: Date of Application, 14th Mar., 1894
Complete Specification Left, 12th Dec., 1894-Accepted, 19th Jan., 1895
PROVISIONAL SPECIFICATION.
Improvements in Alarms for Use in connection with Safes,
Cash Boxes, and the like.
ERNEST ARTHUR CLEMENTS 2 Stanley Villas, Stanley Road Teddington,
Gentleman, do hereby declare the nature of this invention to be as follows:-
The object of my invention is to construct machinery and to fit the same to any
safe, box, or other receptacle, in such a manner, that when removed or the lid
raised by any unauthorised person an alarm bell will be automatically sounde:1
within the safe or box and can only be stopped by means of a key.
In order to carry out my invention I provide a main spring with ratchet wheel
and spring pawl, a train of toothed wheels and pinions with spindles, which rotate
in pivots between parallel plates or any other convenient and substantial supports
and made of any suitable material together with a bell or gong spring and hammer
and sprocket wheel.
I provide two perpendicular push rods each fitted with a spring. The lower
push rod, which may be grooved and pivoted, is provided at its lower extremities
with a plate, made of any suitable material, to which is fixed if necessary two or
more guides. The object of the plate to prevent the machinery from being set
in motion through being placed upon any uneven surface. Two bell cranks are
also provided to which the push rods are, at one end, conveniently and suitably
pivoted, the other end being pivoted to two connecting rods. A sliding bar is
provided to which is attached the two connecting rods aforesaid, one of which may
be grooved, and the whole supported by two or more uprights. At one end of the
sliding bar a box is formed, suitably shaped, in which the arm of a detent lever
works. A stop is also fixed conveniently to the sliding bar. The detent lever,
suitably formed, fits into the teeth of a ratchet wheel to stop the machinery or
release the same.
In order that the apparatus may be set at will, two small cog wheels are provided.
To the spindle of one a sector is fastened which works upon the detent lever, either
attached to the cog or at any suitable distance therefrom, pressing the arm of the
said detent lever in a position to be easily received within the smaller end of the
box fixed upon the sliding bar. To one end of the spindle is secured a notched
wheel or sector with spring pawl and rod attached thereto extending to the top of
the safe or box the object being to prevent turning the small cogs too far to the
right or the left. The outer end of the spindle is provided with a head of any desired
shape to admit of the application of a key of corresponding shape. Upon the
spindle of the other cog, either secured thereto or any suitable distance therefrom,
is rigidly fixed an arm which comes in contact with the stop on the sliding bar, and
presses it to the right, passing the smaller end of the box on the said sliding bar
over the arm of the detent lever and holding the same in position.
The whole of the machinery is encased between parallel plates, made of any
Buitable material and may be fitted to any suitable receptacle provided the push rods
be extended to the required distance.
1

page_text: Improvements in Alarms for Use in connection with Safes,
Cash Boxes, and the like.
ERNEST ARTHUR CLEMENTS, 2, Stanley Villas, Stanley Road, Teddington,
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 :-
The object of my invention is the construction and arrangement of mechanism to
fit a box, safe, or other suitable receptacle in such a manner, as to render it
impossible to remove such receptacle without sounding an alarm.
-
In order that my invention may be more clearly understood, I will describe it
with reference to the accompanying drawings: wherein Fig. 1, shows in
elevation a train of toothed wheels, A. B. escapement wheel C, and escapement
and bell hammer D. together with pinions and spindles as in existing clock-
work, the whole to work between parallel plates, or any other suitable
and substantial supports, but it may consist of any number of toothed wheels
pinions and spindles, as shall be required. A main spring A' is provided with the
usual ratchet wheel, and spring pawl, and bevel wheels, A* and rod A³ for winding
from the top of the machine within the box or it may be made to wind from the
outside of the said box if desired, and without the said bevel wheels as in existing
clockwork.
E. is a detent lever.
F. is a box upon the sliding bar G.
F is the stop under the sliding bar G.
G. is the sliding bar aforesaid.
H. & H are two small toothed wheels.
I. Fig. 2, are bevel wheels.
J. & J are two connecting rods.
K. & K are two bell cranks.
L. & L' are upper and lower push rods.
L, is a tongue projecting from the push rod L'.
M. & M are coiled springs and M' a plain spring.
N. is a foot attached to the lower push rod L.
N&N are guides attached to the foot N.
O. & O are supports through which the sliding bar G. works.
On the escapement wheel C. is formed a double row of teeth C' and C³, the row
of teeth C which may be called the escapement wheel, works the escapement and
bell hammer D. as in existing clockwork, the second row of teeth C², upon which
forms a second escapement wheel is attached rigidly to the escapement wheel C¹
aforesaid; and forming one solid wheel is used for the purpose of stopping the
machine, or there may be a single row of teeth upon a single escapement wheel to
produce a double action, or I may use two separate escapement wheels upon the
same spindle, and at any suitable distance apart.
The detent lever E. suitably formed and made of any approved material pivoted
at E, and provided at one end with a tooth E to engage and hold the teeth C³,
aforesaid or release the same. At the other end of the said detent lever E. is
fitted a lateral arm E' which arm has free play within the box F.
The box F. is attached rigidly to the sliding bar G., and is of such a shape as to
allow the lateral arm E', of the detent lever E, aforesaid to be held nicely within
its smaller portion as shown by the drawings.
In order to set the machine 1 provide the two small toothed wheels H. & H'
having projecting pins or arms H and H³, (Fig. 2) one arm H' to work upon

page_text: the said detent lever E, pressing it down till the lateral arm E³, of the said
detent lever rests upon the sliding bar G., and at the same time the arm H³,
meets the stop F' which is rigidly attached to the sliding bar G., shooting the
said sliding bar forward and locking the lateral arm E³, of the detent lever E.,
within the smaller portion of the box F. as aforesaid. To the toothed wheel H.
are fitted bevel wheels I (Fig. 2) turned by a key applied to the upper end of
the rod I in order to set the machine from inside the box but it may be
made to be set from the outside if desired.
The two connecting rods J. & J¹ are joined to the two bell cranks K. & K¹
respectively by means of pivoted joints, the connecting rod J¹ is preferably slotted
to allow it to slip back without affecting the machinery whilst in action.
The bell crank K. is joined to the lower push rod L. and pivoted at K³, and
the bell crank K' pivoted at K³, is joined to the upper push rod L' by means of
a pivoted joint. The lower push rod L. is pivotted and slotted in order to allow
the box to be put down without affecting the action of the machinery.
(Fig. 3.) is the lid showing a pin a.
(Fig. 4.) is a plan of the top plate showing the arm b. and catch c. Before
setting the machine the arm 6. is placed over the tongue L2, Fig. 1, to prevent
the push rod from flying up under the influence of the coiled spring M Fig. 1.
When the arm b. is in the position indicated by Fig. 4. the push rod is held
down. In order to release the same the pin a Fig. 3., meets the catch c. Fig. 4.
and in pressing it down releases the arm b. which is shot forward by the spring d.
to the position indicated by the dotted lines and simultaneously the lid meets
the top of the push bar L¹ (Fig. 1.) holding it in the same position as the
arm b. Fig. 4. had done previous to the lid being closed. When the lid is raised
the push rod L' having no longer the support of the lid or the arm b. aforesaid
will spring up, pulling the bell crank K (Fig. 1.) to the position indicated by
the dotted lines the said bell crank drawing the sliding bar forward and releasing
the lateral arm E, of the detent lever E. (Fig. 1.) from its position on the
sliding bar G., in the box F. and simultaneously releasing the tooth E¹ upon
the detent lever E. from the escapement wheel C. A similar action is effected
when the box is raised, the push bar L. being operated by the spring M³.
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 :-
--
1st. The combination of mechanism fitted to a safe, box or other suitable
receptacle whereby an automatic alarm is given on the displacement of the
said box, or the raising of its lid as hereinbefore substantially described and
set forth.
Dated this 12th day of December 1894.
E. A. CLEMENTS,
Applicant.