IMPROVED MECHANISM FOR ACTUATING THE MINUTE INDICATOR IN CHRONOGRAPHS
Year: 1884

page_text: I BERNARD CHRISTIAN REBER of Locle Switzerland Watch Maker do hereby
declare the nature of my Invention for IMPROVED MECHANISM FOR ACTUATING
THE MINUTE INDICATOR IN CHRONOGRAPHS, to be as follows:-
The object of this Invention is to obtain by means of simple mechanism a minute
meter working with the most absolute exactness so that it may be entirely relied
upon.
In the annexed Drawing Fig. 1 represents a section of all the parts of the works
of the watch which are connected with the minute meter. Fig. 2 shows in its
proper place the arrangement of the engaging and disengaging lever of the
chronograph as well as that of the spring N¹ which connects the wheel of the
meter N with the axis O¹ of the eccentric Ŏ.
The principle feature in my Invention consists in the application of the
intermediate mover L. M similar to the minute wheels which regulate (in ordinary
watches) the train of the hour hand in relation to that of the minutes intended
to regulate the train of the hand of the minute-meter P in relation to that of
the hour hand of the chronograph R.
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This chief arrangement may serve as a basis for mechanism of various
chronograph-meters of which the annexed Drawing is but one instance.
The position of the band of the minute meter may be varied and may even be
placed in such a manner as to turn also round the centre of the watch.
DESCRIPTION OF THE DRAWING.
The barrel which is not represented in the Drawing engages with the pinion A of
the centre wheel B. The latter engages with the pinion C of the second whee!
which acts on the pinion E of the seconds wheel F. The latter whose axis
carries the second hand F¹ engages with the escapement wheel which is not shown
in the Drawing.
The pinion of the centre-wheel A carries like in all watches a minute wheel S
upon which the minute hand Y is fixed. The cannon wheel V carries the hour
hand X and the relative motion of these two hands is regulated by the minute
wheel T-U. Z is the dial of the watch.
The axis of the second wheel F carries the driving wheel G of the chronograph.

page_text: An intermediate moveable wheel H supported by a ratchet-bridge H¹ which
pivots round a bearing made for that purpose on the bridge of the mover E-F
enables the chronograph wheel J fixed upon the stem Q which carries the
chronograph-hand R to be put in motion. This stem Q traverses the pinion of the
centre wheel.
.
The chronograph-wheel J carries an eccentric heart piece J¹ for setting at zero
the hand R and a pinion K for the purpose of acting on the minute-meter N. O. P.
and the transmission of the motion of the pinion K to the hand P is effected by
means of the mover L M above mentioned. The wheel L engaging with the
pinion K its pinion M transmits this motion to the meter-wheel N.
The latter is not fixed to the stem O¹ which carries the meter-hand P if it were
the hand P could not be replaced at o. However as the wheel N' which rubs
against a bearing of the stem 0¹
The heart-piece O which serves to set at o the meter-hand is fixed upon the
stem and is acted on by a lever O₁ provided with a roller.
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,
The improved mechanism for actuating the minute indicator of chronographs
arranged and operated substantially as set forth.