Improved Tone-striking Mechanism for Clocks.
Year: 1898

page_text: Date of Application, 30th Dec, 1898-Accepted 25th Mar., 1899
COMPLETE SPECIFICATION.
Improved Tone-striking Mechanism for Clocks.
We, AUGUST RICHARD LOUIS WILLE, Clock-maker, of 5, Mozartstrasse, Leip-
zig, and ADAM FERDINAND ERNST KORNDORFER, Musician, of 14, Schreberstrasse,
Leipzig, both in the Empire of Germany, do hereby declare the nature of this
invention and in what manner the same 18 to be performed to be particularly
described and ascertained in and by the following statement.-
--
This invention relates to clocks, which do not as hitherto, indicate the different
hous of the day by a corresponding number of strokes, but strike a different
tone for each hou
The invention 18 intended to cultivate a musical ear in persons who are fond
of and practice music
In the accompanying drawing :-
Fig 1 is a front view of the clock-work with the dial plate removed,
Fig 2 a side view of the same
Fig 3 a view of the clock-work and the striking mechanism at the moment
when the dium which carries the "tone producers" is actuated,
Fig 4 with a fresh "tone producer" moved under the hammer.
Fig 5 with the hammer raised for striking.
The "tone producers" are fixed to the drum T, which is pivoted to the fiame
over the clock-work
To the arbor G of the drum T, a star-wheel S with 12 pins a and points 8¹
18 attached
This wheel is actuated by a crank-lever d, which is under the
influence of a spring, is pivoted at and acts in conjunction with the cam
disc c attached to the "hands" atboi b, as also by the bent or bow spring f,
which acts together with the pins a, Figs 1 to 3
The hammer B which actuates the " tone produce", attached to the dium T
is firmly connected to the arbor C pivoted on the supports R, and adjusted to
swing above the highest point of the drum T, Figs 1 to 5
To the spindle C arms g g are fixed. one of which is loosely connected by
means of a cords or other suitable means of connection with the crank-lever h,
which is loosely pivoted to the spindle D, the other arm of the lever being
guided within the range of the pins of the "pin-wheel" E, Figs 1 and 2
The hammer A which stakes the principal "tone-producer 18 firmly
connected to the spindle D, which 18 caused to act in conjunction with the pins
of the "pin-wheel" E, by means of the aim hi
"
On the hands" arbor b 18 pivoted the pin-wheel F, the pins oo¹ of which
serve for actuating the crank-lever w pivoted at 1, the other arm of which is
guided at the upper end towards the interior of the train and thus comes into
contact from time to time with the pin m of the wheel N which actuates the
fly H
To the spindle K aims n¹ are fixed so as to rotate therewith, one of which
aims n acts in conjunction with the crank-lever w, the other arm n' acting with
the pint of the wheel L, as also by means of the nose or projection p, with the
dividing plate Z

page_text: The combined action of the several parts of the tone striking mechanism is
as follows.-
1
.
Assuming that the hands stand at one o'clock, as shown in Fig 1, and the
dividing plate Z is released, the pins of the wheel E operate the aims hh'
and as the aims hh' as well as the hammers A B are raised by the pins upon the
sliding of the arms hh from the pins the principal tone producer" 18
struck by the hammer A and at a suitable interval, the accompanying tone pio-
ducer which indicates the fist hour (one o'clock) by the hammer B, whereupon
the projection or nose p of the aim ¹ falls into the following notch of the
dividing plate, the pin t lies against the upper end of the arm n', and the stinking
mechanisin 18 locked until the striking of the next hou
As the hands move forward and the train is set in motion, the angle-level d
18 actuated by the cam disc c and thereby the star-wheel with the arbor G on
the drum T (see Fig 3), the pin a in front of the oblique.surfaces of the spring f
18 'moved beyond the highest point thereof and forced farther forwards until the
projection oi nose of the spring f is between two pins a, during which move-
ment, the tone producer which sounds the next hou, is brought under the
hammer B.
After the cam disc c has passed the crank-level, the crank-lever is brought
back again to its starting position by means of the sping f¹ (Fig 4)
If the clock is gone on to the point indicated by the hands in Fig. 4, the
second pan of pins of the wheel E will be close to the aims h which actuate
the hammers A B and the pun o of the wheel F, which is connected with the
large hand, will have raised the crank level w, whereupon the arm of the level w
will have simultaneously raised the arm n. With the aim however, the shaft K
and arm are also actuated, so that the nose por projection of arm is lifted
out of the notch of the dividing plate, and the path of the pint of the wheel L,
hitherto in contact with n³, set free, Fig 4
Atter the train has been released it moves slightly, but as it continues to
rotate, is obstructed by the pin m of the wheel N, which strikes against the upper
end of the crank-lever to until the pin o has passed the lower aim of the crank
lever, that is to say, that the large band has come into the vertical lower position,
whereupon the crank-level w falls back into its starting position, releases the
pin m, the train 18 able to rotate firely, Fig 5, and the striking of the tones,
as previously described, is effected, and in such a manner, that the complete
hours are indicated by the principal tone being struck once and the accompany-
ing note twice, the halt hours being denoted by the principal note sounding
once and the accompanying note once only also
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim 18.-
1 A tone striking mechanism for clocks, in which by means of two hammers,
and movable and fixed "tone producers" the divisions of time are indicated either
by tones sounded simultaneously or following one another at short intervals,
the principal tone being first sounded and the accompanying tone which indicates
the hour, afterwards
2 A modification of the tone-striking mechanism mentioned in Claim, in
which the hammers A B are movable pivoted to spindles C D. but not adjustable
thereon, and the "tone-producers" are attached to a rotary drum T, which latter
is set in motion at the expiration of each hour by the combined action of the
cam disc c the crank-level and pin S¹ of the star wheel S, as well as by the
bent o bow-spring f, with the pins a, in such a manner that the
tone pio-
ducer, coliesponding to the next hour, is brought under the hammer B
3. In the tone-striking mechanism, mentioned under Claim 2, the actuating
of the hammers A B in such a manner that by the combined action of the
pins oo' arranged on the "hand-wheel" f, the crank-lever w, with the arms an¹,

page_text: 18 raised, whereby the path of the pint on the disc L is set free and the dividing
plate Z released from the nose or piojection p, the striking mechanism so released
effecting a short rotary movement until the pin m of the wheel N strikes
against the upper arm of the crank-lever w, the said mechanism being obstructed
in its further movement, until the large hand reaches the highest or lowest
vertical position, in which position the crank-level w falls away from the pin o
or o, the striking mechanism is set free, and by the combined action of the
pins with the arms hh¹ the tone of the principal "tone-producer" and
that of the accompanying "tone-producer" & can be struck in a suitable manner
one after the other.
Dated this 29th day of December 1898
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, WC., Agents.