Improvements in Cuckoo-clocks.
Year: 1891

page_text: Date of Application, 11th May, 1891
Complete Specification Left, 19th Jan., 1892-Accepted, 19th Mar., 1892
PROVISIONAL
SPECIFICATION.
Improvements in Cuckoo-clocks.
I, GORDIAN HETTICH SOHN. of Furtwangen in the Grand-Duchy of Baden,
Empire of Germany, do hereby declare the nature of this invention to be as
follows:-
My invention has for its object to provide the striking train of clocks with a
device which will imitate the cry of the cuckoo by means of a single whistle at
every action of the striking train.
་
The present arrangement as compared with the arrangement of cuckoo-clocks as
heretofore constructed which are provided with two whistles, presents the advantage
that considerable less room is required, and that consequently the said cuckoo-clocks
may be made only half the size of those hitherto constructed, an advantage which
will be highly appreciated by clock-makers. Moreover the cuckoo-cry of my
improved clock is more natural than that of other similar clocks.
In carrying my invention into practice a plate-wheel acts in the usual manner on
a striking wheel which is provided with projecting pins. On these pins rest two
pawls, the first having for its purpose to open the key or valve while the second
pawl serves to operate the bellows. The second pawl which is forked at its front
end is mounted on an arbor which arbor carries at its other end a bellows lever
engaged in a loop attached to the bellows. The first pawl is mounted on the arbor,
and on the other end of this arbor is fixed a lever engaged in a loop of the
key-arm.
The whistle, which receives the air from the bellows is tuned in such a manner,
that, if the key is opened, it produces the high sound of the cuckoo-cry, and if the
key is closed the low sound of the same. When the striking mechanism comes into
operation, the two pawls are first raised, whereby the bellows are inflated, and the
key is opened, the forked pawl resting meanwhile with its lower prong on one of
the pins of the wheel, and when this wheel rotates this prong will of course be
released from the pin, which causes the bellows to be half-way lowered thereby
producing the high sound of the cry.
By the further rotation of the wheel the second pawl is again slightly raised
through its upper prong, and at the same time the first pawl.released from the pin
on which it rests, which causes the key to be closed. Immediately before this
takes place the upper prong of the second pawl releases the pin which causes the
complete lowering of the bellows and thereby produces the lower sound of the cry,
the key being now closed.
A rod is as usual attached to the bellows which produces in the well-known
manner, the movements of the cuckoo.
D
1
1
1001
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Cuckoo-clocks.
GORDIAN HETTICH SOIN of Furtwangen in the Grand Duchy of Baden Empire
of Germany 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:-
My invention has for its object to provide the striking train of clocks with a

page_text: device which will imitate the cry of the cuckoo by means of a single whistle at
every action of the striking train.
The present arrangement as compared with the arrangement of cuckoo-clocks as
heretofore constructed which are provided with two whistles, presents the advantage
that considerable less room is required, and that consequently the said cuckoo clocks
may be made only half the size of those hitherto constructed, an advantage which
will be highly appreciated by. clock makers. Moreover the cuckoo cry of my
improved clock is more natural. than that of other similar clocks.
In the accompanying drawing,
Figure 1'is a back view of a clock-work the whistle being shown in section ;
Figure, 2 is a sectional elevation of the clock work;
Figure 3 is a plan and
Figure 4 is a side view of the same.
In carrying my invention into practice a plate wheel S acts in the usual manner
on a striking wheel A which is provided with projecting pins a as shown. On these
pins rest two pawls B and C the first (B) having for its purpose to open the key or
valve K while the second pawl (C) serves to operate the bellows b. The second
pawl C which is forked at its front end as shown in Figure 2 is mounted on an
arbor d which arbor carries at its other end a bellows lever D engaged in a loop
attached to, the, bellows b. The first -pawl B is mounted on one end of the arbor e
and on the other end of this arbor is fixed a lever E engaged in a loop of the key
arm K
The whistle, which receives the air from the bellows is tuned in such a manner
that, if the key is opened, it produces the high sound of the cuckoo cry, and if the
key, is closed the low sound of the same. When the striking mechanism comes into
operation, the two pawls B and C are first raised, whereby the bellows bare inflated
and the key k is opened the forked pawl C resting meanwhile with its lower prong
on one of the pins a of wheel A and when this wheel rotates this prong will of
'course be released from the pin, which causes the bellows to be half lowered thereby
producing the high sound of the cry.
By a further rotation of the wheel the second pawl C is again slightly raised
through its upper prong and at the same time the first pawl B released from the
pin on which it rests which causes the key K to be closed. Immediately before
this takes place the upper prong of the second pawl C releases the pin a which
causes the complete lowering of the bellows and thereby produces the lower
sound of the cry, the key K being now, closed.
A rod is as usual attached to the bellows which produces, in the well known
manner, the movements of the cuckoo.
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:
First. In a cuckoo clock the combination with a single whistle for producing the
cuckoo cry and a key or valve therefore which is operatively connected with the
striking train of the clock by means including a lever co-acting with the striking
wheel, whereby the said key or valve is opened and closed during the operation of
such striking train, of a single bellows operatively connected with the striking train
by means including a forked lever which in its co-operation with the striking train
imparts two impulses to the bellows one of which passes through the whistle when
the key or valve is opened and the other when it is closed substantially as set
forth.
Second. The combination with the striking train including the wheel A provided
with, projecting pins as shown, and a valved whistle and a bellows in suitable.
connection. with each other of levers B and E mounted on the same arbor and
co-operating respectively with the pins of wheel A and the arm of the valve of the
whistle and levers C and D mounted on the same arbor, the lever C provided with

page_text: two prongs which co-operate with the pins of wheel A and the free end of lever D
co-acting with a loop on the bellows substantially as set forth.
Dated this 19th day of January 1892.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.