Minute-interval alarming device for a clock or the like

An alarming device for a clock and the like comprising:

• a rotatable minute time wheel;
• means for intermittently driving said minute time wheel through angular distances representing minutes;
• a rotatable 10-minute time wheel positioned to intermittently mesh with said minute time wheel so as to be intermittently driven thereby through angular distances representing 10 minutes, one of said minute and 10-minute time wheels having a plurality of angularly spaced apart shift teeth portions, separated by non-toothed portions, which intermittently mesh with a continuously toothed portion of the other wheel;
• a rotatable hour time wheel positioned to intermittently mesh with said 10-minute time wheel so as to be intermittently driven thereby through angular distances representing hours;
• first and second angularly adjustable detection devices for respectively detecting when the 10-minute and hour time wheels are in predetermined angular positions, said first detection device containing alarm time indicating indicia each of which represents one-figure minutes selected in accordance with the number of said shift teeth, and said second detection device containing alarm time indicating indicia representing hours;
• setting means for setting said detection devices in angular positions corresponding to a time at which it is desired that an alarm should be given;
• and audible alarm means rendered operative only when the 10-minute time wheel and the first detection device, and the hour time wheel and the second detection device, are in corresponding angular positions to provide an audible alarm.