Improvements in or relating to Alarm Clooks.
Year: 1895

page_text: Improvements in or relating to Alarm Clooks.
We, DAVID SALOMON of 56 St. Michael's Road, Northampton, County of
Northampton, Leather Merchant, and FELIX HEILBRONN of Adelia House,
Portland Road, Finsbury Park, County of Middlesex, Merchant, do hereby declare
the nature of this invention to be as follows:-
-
The object of this invention is to provide in addition to the ordmany alarm
supplementary alarms occurring at stated periods thereafter aud adapted, unless
intentionally stopped, to repeat at such intervals until the alarm spring runs down.
The details of the mechanism may vay, but we will describe a mechanism which
efficiently carries out our object, and is applicable to the ordinary cheap American
alarm clockч.
The spindle which carries the hammer of the alarm is provided with the usual.
arm by which the alarm is prevented from acting, but in addition to the usual
alarm check we provide a second check engaging in any convenient manner with
the before mentioned arm so that when this secoud check is in the way the alarm
cannot operate, by this arrangemeut when the normal check is in the path of the
hammer arm, the alarm cannot operate at all, but when that is removed the alarm
can operate during those periods when the second check is temporarily removed.
The movement of the second check is regulated by a wheel ring or equivalent upon
a suitable part of the going-tiain of the clock, preferably the minute wheel, this
portion being provided with projections, notches or equivalent so arranged that at
the required intervals of time say once every five minutes the second check 14
removed for a suitable period say half a minute out of the path of the hammer armı,
and during that period the alarm operates. As the minute wheel turns the second
check is again applied and the alum stopped until the next five minutes are passen
when the check is again removed and so on, until the spring runs down. Preferably
the second check is provided with a spring which maintains it in contact with the
periphery of the notched wheel the end of it entering the notches under the
It will be understood
influence of the spring and releasing the hammer arm.
that either or both of the checks may be applied directly to the alarm hammer or
any suitable portion of the alarm mechanism, but we describe the additional arm as
that is commonly used in alarm clocks
This mechanism may be applied to existing clocks to which it can easily be
attached
Deted the 11th dow of Alav 1895
BOULT & WADE,
Agents for the Applicants.

page_text: Improvements in or relating to Alarm Clocks.
We, DAVID SALOMON of 56 St Michael's Road, Northampton, in the County
of Northampton, Leather Merchant, and FELIX HEILBRONN of Adelia House,
Portland Road, Finsbury Park, in the County of Middlesex, Merchant, 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 this invention is to provide in addition to the ordinary aların,
Fupplementary alarms occurring at stated periods thereafter and adapted, unless
intentionally stopped, to repeat at such intervals until the alarm spring runs down.
The details of the mechanism may vary, but we will describe certain arrangements
which efficiently carry out our object, and are applicable to the ordinary cheap
Anierican alarm cloche in which connection we have illustrated them in the
accompanying diawings.
In these diawings
Figs 1 and 2 nie respectively a back and side elevation of portion of a clock
provided with one form of our improved alarm mechanism.
Fig. 3 is a perspective view, as seen from the back showing another form of the
mechanism, and
Fig. 4 is a back elevation of a third form of the mechanisin.
Like letters indicate like parts throughout the drawings
In carrying our invention into practice we provide the spindle A, which cairies
the hammer B of the alam bell B, with the usual arm A by which, through the
engagemont therewith of the detent D. the alarm, as ordinarily, is prevented from
acting, in addition to this we provide the spindle A with an arm A 2 with which
a detent E is adapted to alternately engage and disengage during the time that the
detent D is released from the aim A', so as to divide the usual single or continuous
alarm into a series of distinct and shorter alarms
The detent E is secured to or formed upon one end of a levor E¹ pivotted to the
clock-frame or housing-plate Fits other end being provided with an arm E 2, and
operated on by a spring G which holds the arm E2 in contact with a wheel or
ring H secured upon the minute arbor 1. The wheel H is provided with a series
of peripheral notches on recesses II' into which, as the wheel rotates, the free end
of the arm E2 15 pressed, by the spring (i, so as to release the detent E from, or
withdraw it from the path of, the aim A 2. The recesses H' and arm E 2 are so
shaped that after said aim has engaged with one of the recesses the continued
rotation of the wheel H in the direction indicated by the arrow in Fig. 1, will
cause the arm to move outwards to disengage it from the recess.
At all times that the arm E 2 is not engaged with one or other of the recesses H
the detent E projects into the path of, or positively engages, the arm A 2 so that
although the ordinary detent D may be released the alarm will not at these times
be allowed to act, the alarms only being given when, during the release of the
detent D from the arm A, the arm E2 18 u engagement with the recesses H¹ and
the detent E consequently released from the arm A 2.
The intervals at which the scveral alarms are given depend upon the distance
between the recesses H', the duration of each alarm upon the width or length of
each recess and the number of the successive alarms given for each complete
winding-up of the alarm-spring upon the capacity of said spring, these features in
different clocks being varied according to requirements. We however find it
convenient to form the wheel H and arm E2 so that the alarms may be given at
intervals of three minutes apart and be each of about half a minute's duration,

page_text: these successive alarms continuing until the energy of the alarm spring is
expended.
In the arrangement shown in Fig. 3 we dispense with the lever E' and periodically
arrest and release the aim A 2 directly by the wheel II. In this arrangement the
recesses H must be sufficiently deep to allow the arm A 2 free play when the
spindle A is operated on by the usual pallet mechanism J and it is only when,
during the release of the detent D from the aim A¹, one of the recesses '
18 presented to the end of the arm A 2 that this operation can take place because
even when the detent D is disengaged from the arm A' the pallet mechanism 18
prevented from acting so long as the arm A 2 remains engaged with one of the
projections or teeth between the recesses H'.
The wheel H may be secured to any desired rotating part other than the minute
arbor I for example as shown in Fig. 4 it may be secured on a spindle K geared
with the minute arbor I In this arrangement as the wheel is geared to iotate
quicker than the minute arbor I it requires fewer peripheral recesses H' than the
wheels H shown in Figs 1 and 3 for producing a like result In respects other
than that last mentioned the alarm mechanism shown in Fig. 4 is substantially
similar to that shown in Fig 3
The before described devices may be applied to existing alarm clocks.
Instead of using the arm A 2 in conjunction with the detent E we may arrange
the latter so that it will engage with the arm A' or directly with the hammer B.
If desired the wheel II may be in the form of a ring and secured to one of the
ordinary clock wheels.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim 18;-
1. In an alarm clock the combination with the usual mechanism for releasing the
alarm of supplementary mechanism for alternately releasing aud arresting the
alarm during the period of release by the usual mechanism substantially as
described.
2. In an alarm clock the combination with the usual mechanism for releasing the
alarm of a recessed wheol such as H H substantially as and for the purpose
described, and illustrated in the accompanying drawings.
3. In an alarm clock the combination with the usual mechanism for releasing the
alarm of a supplementary detent and a wheel such as HH' substantially as and for
the purpose described and illustrated in the accompanying drawings.
4. In an alarm clock the combination with the usual mechanism for releasing the
alarm of supplementary alarm-releasing mochanism constructed and operating
substantially as aud for the purpose described and illustrated in Figures 1 and 2 or
Figure 3 oi Figure 4 of the accompanying drawings.
Dated this 28th day of January 1896.
DAVID SALOMON
DAVID
SALOMON
FELIX HEILBRONN.
Boult & Wade,
Agents for the Applicants.