Improvements in or relating to alarm clocks

... 691,199. Clocks. ETABLISSEMENTS JAPY FRERES. July 24, 1950 [Oct. 13, 1949]. No. 18454/50. Class 139. An alarm clock having a clockwork mechanism associated with an alarm movement in which the dial indicators, the clockwork mechanism and the alarm movement are controllable by means accessible from the outside, is characterized in that an additional alarm control device which is provided with an indicator and which controls the alarm hammer and releases it to sound the alarm at the end of an indicated pre-set. time period is adapted to be coupled with said clockwork mechanism by means of a control member accessible from the outside, said additional alarm control device cooperating with a rocking member provided with two arms one or other of which locks and duly releases the anchor of the alarm movement, according as the additional alarm device is coupled with or uncoupled from said clockwork mechanism. In a first embodiment, Fig. 1, the minute wheel pinion 4 drives a wheel 8 carrying the ...

Uhrwerk-Alarmeinrichtung

METHOD FOR ADJUSTING THE VALUE OF A THICK LAYER RESISTANCE AND CORRESPONDING RESISTANCE

L'INVENTION A TRAIT A UN PROCEDE POUR REGLER LA VALEUR DE LA RESISTANCE D'UN ELEMENT RESISTANT EN COUCHE EPAISSE. L'ELEMENT RESISTANT COMPREND UNE COUCHE RESISTANCE 25 QUI PORTE, SUR SA BORDURE, DEUX BORNES DE CONNEXION 21, 22 ET UNE BARRETTE DE LIAISON 24. LA VARIATION DE LA RESISTANCE EST OBTENUE EN REALISANT UNE FENTE 23 ENTRE LES DEUX BORNES, LA FENTE ETANT SENSIBLEMENT PERPENDICULAIRE A LA BARRETTE DE LIAISON QUI RELIE LES DEUX PARTIES DE COUCHE RESISTANTE SEPAREES PAR LADITE FENTE. THE INVENTION RELATES TO A PROCESS FOR ADJUSTING THE RESISTANCE VALUE OF A THICK-LAYER RESISTANT ELEMENT. THE RESISTANT ELEMENT INCLUDES A RESISTANCE LAYER 25 WHICH CARRIES, ON ITS EDGE, TWO CONNECTION TERMINALS 21, 22 AND A TERMINAL BAR 24. THE VARIATION OF THE RESISTANCE IS OBTAINED BY MAKING A SLOT 23 BETWEEN THE TWO TERMINALS, THE SLOT BEING SENSITIVELY PERPENDICULAR TO THE TIE BAR WHICH CONNECTS THE TWO PARTS OF RESISTANT LAYER SEPARATED BY THE SAID SLIT.

Patent DE3018682C2

Réveil.

Warning clockwork instruments