Year: 1886

page_text: I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement :-
This invention relates to improvements in that class of clocks in which the time
mechanism and the striking mechanism are included in a single apparatus; and
has for its object to bring the mechanism into a very contracted space, and adapt
it to the smaller classes of case.
The said invention comprises a frame, composed of three plates supported and
connected in planes parallel with each other, the intermediate plate forming a
central division in the frame; the time-train being located in one division and the
striking train in the other division. The main arbor extends through the two
divisions from front to rear and terminates at one end in a winding stem. A sleeve
on said main arbor extends from one of the divisions outside the frame, and
terminates in a winding stem substantially concentric with the winding stem of
the main arbor. The main arbor and sleeve carry respectively the main wheels of
the time and strike movements, and in the divisions in which the respective trains
are arranged, all as more fully hereinafter described.
In the accompanying drawing
Figure 1 is a front view of the movement, the pointer wheels with the exception
of the centre pinion being removed.
Figure 2 is a transverse section just in rear of the front plate and looking
rearward.
Figure 3 is a transverse section cutting just in rear of the intermediate plate and
looking rearward, and showing the main striking wheel and train.
Figure 4 is a rear view showing the count mechanism outside the rear plate.
Figure 5 is a side view looking from the left of Figure 1.
Figure 6 is a partial longitudinal section through the main arbor and the main
wheels.
Figure 7 is a partial longitudinal section through the centre arbor.
A represents the rear plate of the frame, B the front plate, and C the intermediate
plate. The three plates are arranged parallel with each other, and are connected
by posts D, so as to form two divisions E, F in the frame, one in front of the other,
as seen in Figure 5.

page_text: G is the main arbor which takes a bearing in the front plate B, and extends
through the intermediate plate C, and through the rear plate A, terminating at the
rear in a winding stem H. On the main arbor the main wheel I is arranged
between the front and intermediate plate; and in the division F of the frame, in
connection with this main wheel I, is the main spring J, the connection being made
in the usual manner for clock main springs. This device is too well known to
require description or illustration. By applying a key to the winding stem the
spring may be wound, and the reaction of the spring will impart driving rotation
to the arbor G and the main wheel I. The time train is arranged entirely in the
front division F, between the plates B, C, as seen in Figures 2 and 5.
K is the centre arbor, which extends through the three plates, as seen in
Figure 7, from front to rear, on which arbor the centre wheel L is arranged, in the
usual manner, to impart rotation to the centre arbor. On this arbor, outside the
front plate, the pointer pinion M is arranged, also in the usual manner, and, as
seen in Figures 1 and 5, the usual pointer wheels being applied in connection with
the said wheel M in the usual manner, whereby the pointers will be driven; this
gearing is too well understood to require illustration or further description.
On the main arbor G and in the rear division of the frame, a sleeve a is
arranged, which extends rearward through the plate A, and terminates in the
winding stem b around the stem H, so that a key may be applied to the stem 6 to
turn the sleeve a, the main arbor forming an axis for such turning or rotation of
the sleeve a. The stem H projects outside the stem 6 so that a key may be applied
to either.
On the sleeve a is the main wheel d and the main spring e coupled in the usual
manner of connecting the main spring, the main wheel and arbor of a clock
movement, so that by turning the sleeve a the spring e will be wound, and the
reaction of the spring will impart driving rotation to the main wheel d.
The strike train is arranged between the rear plate A and the centre plate C in
the division E, as seen in Figures 3 and 5, and receives motion from the main
wheel d.
In rear of the plate A and on the centre arbor K the snail 8 is arranged, so as to
turn freely thereon, to which snail one revolution is imparted once in twenty four
hours from a pinion g on the centre arbor, working into a gear wheel h which
carries a pinion i, the said pinion working into a gear wheel on the hub of the
snail f. The snail consists of a series of twelve offsets, corresponding to the twelve
hours of the day. Adjacent to the snail f the count-lever m is hung upon a pivot n,
provided with a spring o, the tendency of which is to force the lever m toward the
snail; and on the lever m is a stud p, adapted to rest upon the periphery of the
snailf so that the stud p may be brought to a bearing upon either of the offsets of
the snail, accordingly as it is presented. The count-lever m is provided with a
toothed rack concentric with the pivot n of the lever, and provided with the
usual twelve teeth or notches. 8 is the count pawl, hung upon an arbor t and
forced toward the snail by a spring u.
w is one arm of the trip lever hung upon a pivot 2; the free end of the lever w
turns inward through a slot 3 in the plate, so as to catch upon a stud 4 projecting
from the wheel 5 of the strike train when the lever w is in a certain position, but
escape at other times. The second arm 6 of the trip lever extends inward and into
the path of a stud 7 on the centre arbor, indicated in broken lines Figure 4, so that
at each hour the trip lever will be turned, as indicated in broken lines Figure 4.
The pawl & is held in a position as seen in Figure 4, so that the nose or end of the
rackrests thereon in the normal position of the parts, but as the trip lever w6 is
turned, as before described, the pawl 8 is turned away from the rack, as seen in
broken lines Figure 4, because of an engagement between the trip lever and the
pawl, here represented as made by an arm 8 extending from the pawl, against
which a stud 9 on the arm 6 bears, as indicated in Figure 4.
From the arbor ta lever 10 extends toward the third wheel 11 of the strike
train, as seen in Figure 3, against the end of which a stud 12 on the said wheel 11

page_text: .
will bear, when the parts are in their normal position seen in Figure 4; but when
the pawls is turned away, as before described, and shewn in broken lines Figure 4,
the lever 10 will also be turned away from the stud 12, and out of its path, so
that the strike train in that position will be free to run.
On the end of the arbor 13 of the wheel 11 which end extends through the rear
plate A, is an excentric stud 14, adapted to work into the teeth of the rack r, 80
that if the arbor 13 be permitted to rotate each rotation will bring the stud 14
into engagement with a tooth of the rack r, so as to impart a single step movement
to said rack.
When the parts are in motion and as the end of the hour approaches, the cam 7
on the centre-arbor will strike the arm 6 of the trip lever, and gradually turn that
arm outward, or away from the centre; and at five minutes before the hour.the
lever will have been so far turned as to have also turned the pawls to such an
extent that the stud 12 on the wheel 11 may escape from the lever 10 and permit
the strike train to start, but not to a sufficient extent to take the end of the arm w
out of the path of the stud 4 on the wheel 5; hence the train will be again arrested
BO soon as the stud 4 comes against the end of the arm w. This slight movement
of the train produces what is commonly called "the warning" but this movement
of the pawl 8 is not sufficient to permit the end of the rack r to escape from the
nose of the pawl.
As the hour is completed the action of the cam 7 on the lever 6 is sufficient to
turn the pawl & as indicated in broken lines Figure 4, so as to permit the rack r to
escape; then under the action of the spring o the rack will be thrown inward and
toward the snail until the stud p comes to a bearing on the offset, which may be
at that time presented, say if it be six o'clock, the movement of the lever over the
nose of the pawl will be six teeth. While in this position the pawl is prevented
from returning to its full extent, and hence prevents the lever 10 from again
engaging the wheel 11 to stop the strike train, consequently the strike train will
continue to run, and at each revolution of the arbor 13 the rack will be thrown
outward one tooth and caught by the pawls and so on, until the rack has passed
entirely from the nose of the pawl; then the pawl escaping from the rack will
return to its normal position, and arrest the strike train, as before described.
A spring 15 is applied to the trip lever, tending to throw it into its normal
position.
.
The count mechanism shewn and described, broadly considered, is the common
and well known "snail" count.
.
By this arrangement of the time train with its main wheel and spring in one
division, and of the strike-train with its main wheel and spring in the second
division of the frame, the arbors of the time train having their bearing in the
front and intermediate plate, and the arbors of the strike train having their bearing
in the rear and intermediate plates, so that the respective trains and their respective
main wheels and springs, while one directly in rear of the other, in no way
interfere with each other; the movement is thus brought into a very compact
space, so that a practical striking time-piece may be produced in a minimum space.
This division of the frame into two parts, and the arrangement of the main
wheel and spring with the train of the one part in one division, and the main
wheel and main spring with the other train in the other division may be applied
to alarm movements as well as strike movements; in this case what is represented
as the strike train main wheel and spring in this specification may be considered
as the alarm main-wheel and train.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated to
me by my foreign correspondents, I declare that what I claim is :-
First. In a clock-movement, consisting of two independent main springs and
main wheels with corresponding trains the frame composed of the rear plate A,
the front plate B, and the intermediate plate C, the said plates being secured

page_text: together in planes parallel with each other, so as to form two divisions E F,
combined with the time train having its main spring and main wheel in one
division; and a second main spring and main wheel with train in the other
division, the main spring and main wheel of each train being independent of the
main spring and main wheel of the other train, the arbors of the one train taking
their bearing in the front and intermediate plates and the arbors of the second
train taking their bearings in the intermediate and rear plates, substantially as
described.
Second. In a clock-movement, substantially such as described, the frame composed
of the rear plate A, the front plate B, and the intermediate plate C, said plates
being secured together in planes parallel with each other so as to form two
divisions E F, combined with the time train having its main wheel and main
spring in one division and the strike train having its main wheel and main spring
in the other division and the count mechanism upon the outside of the outer plate
of the division in which the strike mechanism is arranged, substantially as
described.
Third. The herein described time-and-strike clock movement, consisting of a
frame composed of the rear plate A, the front plate B, and the intermediate
plate C, the said plates being secured together in planes parallel with each other
so as to form two divisions E F, combined with a single main arbor G extending
through both divisions and projecting at one end to form a winding stem; a main
wheel and spring having their connections on the arbor in one division; a sleeve a
arranged loose upon said main arbor in the other division, and extending outward
therefrom and terminating in a winding stem b around the main arbor; a main
wheel and spring in connection with the said sleeve in the said other division; a
time train in one division in engagement with the main wheel in that division;
and the strike train in the other division in engagement with the main wheel in
that division and with the count mechanism arranged upon the outside of the
outer plate of the division in which the strike mechanism is arranged substantially
as described.
HASELTINE, LAKE & Co.,
Agents for the Applicant.