IMPROVEMENTS IN DOUBLE CASE OR HUNTING CHRONOGRAPH WATCHES
Year: 1885

page_text: I CHARLES HASELER of N° 145 Hall Road Handsworth in the County of
Stafford Watch maker do hereby declare the nature of the said Invention for
'IMPROVEMENTS IN DOUBLE CASE OR HUNTING CHRONOGRAPH WATCHES" to be as
follows:-
In double case or hunting chronograph watches as ordinarily constructed the
chronograph mechanism is operated by means of a projecting pusher situated at
the edge of the watch midway between the pendant and the joint on which the
front of the case turns. This projection at the side of the watch renders the intro-
duction of the watch into and its removal from the pocket inconvient and
the pusher is in danger of being pressed upon and the chronograph mechanism
accidentally operated on putting the watch into and removing it from the pocket.
Further there is usually required for the purpose of actuating the chronograph
work a complicated series of lever actions either inside the rim of the case or on
the movement with all of which I dispense.
In constructing a double case or hunting chronograph watch according to my
invention I dispense with the said side pusher and operate, the chronograph
mechanism in the following way.
Instead of making the winding knob or buttom situated within the pendant
ring of the watch capable of a rotary motion only I make the said knob capable
also of a sliding motion upon the cylindrical stem in which the ring engages. The
said sliding knob may either be so connected with the axial pin passing through it
and operating the locking catch that the said knob and pin slide together or the
knob and axial pin may have independent sliding motions. In the former case
pressure on the knob causes it to operate both. on the locking spring and also on
the chronograph mechanism thereby liberating the front case of the watch as well
as operating the chronograph mechanism.
In the latter case that is where the knob and axial rod have independent sliding
motions the axial rod operates only on the locking spring while the knob in its
•
A

page_text: sliding motion depresses a tube in which the axial pin slides. This tube operates
the chronograph mechanism its return motion or restoration to its normal position
being effected by an additional spring.
Or in place of a tube surrounding the axial pin a sliding rod parallel to the said
axial pin may be used with like effect.
The pressing of the winding knob operates the chronograph mechanism in the
same way as the side pusher does with the exception of the levers referred to.
The chronograph mechanism is no part of my invention and I therefore do not
describe the said mechanism. The winding knob has its ordinary functions in
addition to its action on the chronograph mechanism.

page_text: COMPLETE SPECIFICATION.
Improvements in Double Case or Hunting Chronograph
Watches.
I CHARLES HASELER of N° 145 Hall Road, Handsworth in the County of
Stafford Watch Maker, do hereby declare the nature of the said Invention and
in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:-
In double case or hunting chronograph watches as ordinarily constructed the
chronograph mechanism is operated by means of a projecting pusher situated
at the edge of the watch midway between the pendant and the joint on which the
front of the case turns. This projection at the side of the watch renders the
introduction of the watch into and its removal from the pocket inconvenient and
the pusher is in danger of being pressed upon and the chronograph mechanism
accidentally operated on putting the watch into and removing it from the pocket.
Further there is usually required for the purpose of actuating the chronograph
work a complicated series of lever actions either inside the rim of the case or on
the movement, with all of which I dispense.
:
In constructing a double case or hunting chronograph keyless watch according
to my invention I dispense with the said side pusher and operate the chronograph
mechanism in the following way.
The winding knob or button in ordinary hunting case keyless watches has a
short sliding motion within the cylindrical stem known as the pendant. This
sliding action is used to depress the locking spring or catch and allow the front
cover of the case to be opened.
In my invention this sliding motion may either be confined to the axial pin
upon which the button rotates or the button and the axial pin may have inde-
pendent motions. In the former case, where the sliding motion is confined to the
axial pin only, pressure on the knob causes it to operate both on the locking spring
and also on the chronograph mechanism thereby liberating the front case of the
watch as well as operating the chronograph mechanism.
In the latter case, that is, where the knob or button and axial pin have
independent sliding motions, the axial pin operates only on the locking spring
while the knob or button in its sliding motion depresses a tube in which the axial
pin slides. This tube operates the chronograph mechanism through a supplementary
spring, its return motion or restoration to its normal position being effected by the
said supplementary spring.
Or in place of a tube surrounding the axial pin a sliding rod parallel to the said
axial pin may be used with like effect.
The pressing of the winding knob or button operates the chronograph mechanism
in the same way as the side pusher does with the exception of the levers referred to.
The chronograph mechanism is no part of my, invention and I therefore do not
describe the said mechanism.
The winding knob or button has its ordinary functions in addition to its action
on the chronograph mechanism.

page_text: I will now proceed to describe with reference to the accompanying Drawing the
manner in which my invention is to be performed.
Figures 1 and 2 represent portions of a double case or hunting chronograph
keyless watch containing the arrangement of my invention in which the locking
spring or catch and the chronograph mechanism are operated by the axial pin or
rod on which the winding knob or button turns. In Figure 1 the axial pin and
other parts are represented in their fully depressed positions and in Figure 2 in
their raised or normal positions: a is the axial pin or rod and b the winding knob
or button. The said axial pin a slides through the pendant and also passes
through the arbor carrying the keyless driver or winding pinion g, the said pin a
being connected to the said arbor by a stud and slot as represented. The bottom
end of the axial pin a projects beyond the winding pinion g. The range of motion
of the pin a is such that it operates the chronograph mechanism in addition to the
unfastening of the cover of the watch. The unfastening of the watch cover and
the operating of the chronograph mechanism are effected in the following manner;
c is the locking spring of the case the catch at the free end of the said spring being
marked c. The said locking spring c is made of a length sufficient to give it at
least double the range of motion of the ordinary locking spring. Near the catch c²
of the locking spring a depression or recess d is made for receiving the winding
pinion g so that the motion of the said spring does not interfere. with the action of
the said pinion. The bottom end of the axial pin or rod a, which end projects
beyond the pinion g, bears upon the face of the depression or .recess d in the
locking spring c as represented. Situated immediately under the outer face of the
depression or recess d is that portion of the chronograph mechanism on which
the part d acts and operates the chronograph mechanism. This being of the
ordinary kind is not represented in the Drawing. By slightly depressing the axial
pin or rod a by pressure upon the winding knob or button b, the spring c is
sufficiently depressed to unfasten the watch catch in the usual manner.
In order to operate the chronograph mechanism, the axial pin or rod a is
depressed to a much greater extent than that which sufficed to open the watch
case. By this further depression of the axial pin or rod a, the recess or part à of
the locking spring c is brought into contact with the actuating portion of the
chronograph mechanism and the latter thus put into operation.
In this way a limited sliding motion of the axial pin or rod a is made to open
the case of the watch and the further sliding motion of the said axial pin or rod
is made to operate the chronograph mechanism. In Figure 1 the locking spring
is represented in its fully depressed position for operating the chronograph
mechanism.
It is sometimes desirable that the chronograph portion of the double acting axial
pin or rod a should be stopped off or made inoperative. For this purpose I combine
with the double acting pin or rod a and locking spring c, a bolt / situated within
the edge of the watch case. The said bolt h is connected by the screw pin i with
the external projection or slide k for operating the said bolt. By withdrawing the
bolt h into the position represented in Figure 1 its head h² does not interfere with
the action of the sliding rod a and the spring c upon the chronograph mechanism,
but when the said bolt h is moved towards the pendant into the position repre-
sented in Figure 2 the head h³ of the bolt passes under the free end of the spring o
and the depression of the said spring is limited, that is, the said spring is permitted
to descend sufficiently far to open the case but cannot descend sufficiently far to
operate the chronograph mechanism as will be understood by an examination of
Figure 2. By this means any existing record upon the dial can be preserved
unaltered.
Figures 3 and 4 represent the arrangement of my invention in which the axial
pin or rod and the winding knob or button have independent motions and functions
and Figure 5 represents a part of the same detached. In Figure 3 the parts
are represented in their normal positions and in Figure 4 the winding knob or
button is, represented in its depressed position for operating upon the chronograph

page_text: mechanism: a is the axial pin or rod which operates only the locking spring c, the
lower end of the said pin or rod bearing upon the free end of the locking spring as
represented in the Drawing; c is the catch of the locking spring c; b is the
winding knob or button. Under the button b and surrounding the axial pin a is
a tube m having at its bottom a heel or short arm m²; p is a supplementary spring
which bears against the heel or short arm m³ of the tube m and operates through
the part p the chronograph mechanism. The spring p, p' also gives the back or
return inotion to the tube m and knob or button b. By pressure upon the axial
rod a the watch case is opened by the said. rod operating upon the part of tho
locking spring c and by pressure upon the knob or button b as illustrated in
Figure 4 it operates through the tube m, m2 upon the supplementary spring p and
the latter acts through the part p³ upon the chronograph mechanism.
Figures 6 and 7 represent the arrangement of my invention in which a sliding
rod q, q parallel to the axial pin a and acted upon by the button b is used for
operating the chronograph mechanism. The parts for opening the case are the
same as those represented in Figures 3 and 4 but the part q' of the sliding rod q
when the latter is operated by the knob or button b acts directly upon the
chronograph mechanism. In Figure 7 the axial pin or rod a and sliding rod q, q
are represented in their normal positions and in Figure 6 the sliding rod q, q
is represented in its fully depressed position for operating the chronograph
mechanism.
My improvements may be applied to full case or half case hunting chronograph
watches.
Having now particularly described and ascertained the nature of my invention
and the manner in which the same is to be performed I declare that I claim as
my invention of Improvements in double case or hunting chronograph keyless
watches;
First. Giving the axial pin or rod upon which the winding knob or button
works such a range of motion and making the locking spring of such a length
that pressure upon the said axial pin or rod can be made either to liberate the
front case of the watch or first to liberate the case and afterwards operate the
chronograph mechanism the several parts being constructed combined and working
substantially as hereinbefore described and illustrated in Figures 1 and 2 of the
accompanying Drawing; whether the said parts be used alone or in conjunction
with a locking bolt.
Secondly. The combinations or arrangements of the parts hereinbefore described
and represented in Figures 3. 4. 5. 6 and 7 of the accompanying Drawing in which
the axial pin or rod and winding knob or button have independent motions and
functions, the axial pin or rod operating only on the locking spring for opening the
case and the winding knob or button upon the chronograph mechanism through a
sliding tube and supplementary spring or through a sliding rod parallel with the
axial pin or rod substantially as described and illustrated.