IMPROVEMENTS IN ALARM CLOCKS
Year: 1885

page_text: I ARTHUR WILLIAM LOVELL REDDIE of the Office for Patents, 6 Bream's
Buildings Chancery Lane in the County of Middlesex, Patent Agent do hereby
declare the nature of the invention for "IMPROVEMENTS IN ALARM CLOCKS" 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 alarm clocks in which the alarm bell is placed and
supported on the exterior of the case. In such clocks as heretofore constructed the
striking movement of the alarm has been commonly arranged within the clock case,
and the hammer has worked through an opening in the top of the case.
The object of this Invention is to make an alarm clock of very small size and to
this end the Invention consists principally in the combination with a clock case and
an alarm bell on the exterior thereof, of an alarm striking movement and hammer
all placed within the said bell, and a trip lever working through an opening in the
clock case to control the action of the said movement.-By this combination as
all the parts of the alarm mechanism, except the tripping mechanism, are brought
outside of the case the size of the case may be very greatly reduced and when the
tripping cam is arranged on the central spindle of the clock movement, an alarm
clock may be made with a case no larger than that of the smallest clock ever made
without an alarm,
This Invention also consists in certain details of the construction of an alarm
clock containing the aforesaid combination as hereinafter described and claimed.
In the accompanying Drawing Fig: 1 is a partly sectional front view of a
clock embodying this Invention. Fig: 2 is a plan thereof the bell being removed,
and Fig: 3 is a sectional view of an alarm bell and a part of the alarm striking
movement arranged therein, illustrating a modification of the Invention.
Similar letters of reference designate corresponding parts in all the figures.
A designates the clock case which may be of any suitable construction and
material. Usually the case will be of sheet metal and will consist of a cylindric or
polygonal body in the front of which is the dial B.

page_text: a. bdesignate the hands, and c designates the alarm-index, which may be set
by turning it on the dial to any predetermined time. By turning the index c. the
alarm-cam will be adjusted or moved to release the trip-lever C at the desired time.
The alarm-trip mechanism forms no part of this Invention. It may be of any
well known or suitable character which will release the trip-lever at the desired
time and therefore needs no description. The trip-lever ₫ projects or extends
upward through an opening d. in the body of the case A as shewn in Figures 1
and 2. On the exterior of the case, and as here shown, on the top thereof, is a
projection e. on which rests the lower plate f. of the alarm-striking-movement.
The upper and lower plates f¹ f. are rigidly connected by posts f²; and by means
of screws e¹ the frame of the said movement is secured on the exterior of the case.
On the upper plate f¹ of the alarm-striking-movement, is formed or attached a
hub or stem-f3 which is or may be screw-threaded, and on which the bell D
is secured. Through the stem f³ passes the winding arbor f* of the alarm striking
movement. The stem f³ may terminate at the top of the bell D, as shewn in
Fig: 1, and the arbor f may be prolonged considerably above the said stem and
have the pendant E, screwed upon it, or the said stem f³ may be prolonged above
the bell, as shewn in fig: 3 and have the pendant E screwed upon it.-In the latter
case the arbor 4 will be prolonged above the stem ƒ³ and into the pendant ring,
and will have a head, *, secured upon it.
In Fig 1 the arbor f, is to be turned by turning the pendant, E, itself; but in
Figure 3, the said arbor is turned by the head, *, like a stem-winding watch.
g. designates the actuating spring of the alarm-striking movement, and gl
designates the alarm-hammer, which is operated by the alarm-escapement, of
which g² g³ designate the escape-wheel and anchor. The hammer gl is blocked by
the trip-lever C, before described, until the time for the alarm, and then the said
lever being tripped releases the hammer and allows it to act on the bell D.-This
action of the trip lever and the hammer is all as in other alarm clocks.
The bell D has an approximately vertical axis and the entire alarm-striking
movement, including the alarm hammer g¹, is arranged within the bell, the hammer
being arranged to operate on the interior of the bell and in an approximately
horizontal plane. The winding arbor f of the alarm movement not only extends
through the stem f³, but has an amply long bearing formed therein, as shown most
clearly in Fig 3.
The Invention is applicable to one and eight day clocks.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I Claim is
1st The combination with a clock case, and an alarm-bell on the exterior thereof
of an alarm striking movement and hammer placed within the said bell, and a trip
lever working through an opening in the clock case to control the action of the said
movement substantially as herein described.
2nd The combination with a clock case having an upward external projection e,
of an alarm movement secured upon said projection, a bell D containing the alarm-
striking movement, and a trip lever C extending upward through an opening d in
said case substantially as herein described.
3rd The combination with a clock case of an alarm-striking movement secured
on the top thereof and having an alarm-hammer movable in a horizontal plane, a
trip lever C extending upward through an opening d in the case, and serving to
directly block said hammer, and an alarm bell D containing and enclosing within it
said movement and hammer, and supported by said movement substantially as
herein described.
4th The combination of the case A, the alarm movement secured thereon having
the hammer g¹ movable in a horizontal plane, and having on its upper plate f¹ the
stem f², the winding arbor f* passing through and having a bearing in said stem,
and the alarm bell D supported on said stem and enclosing within it the said

page_text: movement with its alarm hammer substantially as and for the purpose herein
described.
5th The combination of the case A, the alarm-striking movement secured
thereon, and having on its upper plate f¹ the stem f³, the bell D containing the
said movement and supported by the said stem f³; the pendant E also secured
upon the said stem and the winding arbor f' extending through said stem into the
pendent ring substantially as herein described.
NEWTON & SON,
Agents for the Applicant.