Digital timer and time indicator drums therefor

Claim 1

In a digital timer having timer means carried by a frame means and setting means to set a selected period of time of said timer means operatively associated with means for interconnecting drive means and said timer means together to cause said drive means to drive said timer means for only said set period of time, said timer means comprising shaft means carried by said frame means and a pair of indicator drums rotatably mounted to said frame means by said shaft means, said drums having means cooperating together so that one of said drums will cause incremental movement of the other drum in a timed relation to incremental movement of said one drum, said cooperating means comprising a pinion-like gear means rotatably mounted to said frame means intermediate said drums, said one drum having drive means operatively associated with said gear means to drive the same as said one drum is rotated, said other drum having driven means operatively associated with said gear means to be driven thereby in a timed relation to the incremental movement of said one drum, the improvement wherein said driven means of said other drum comprises a plurality of pins extending in a circular array from said other drum substantially parallel to the axis of rotation of said other drum, said one drum having driven means to be driven by the first-mentioned drive means when interconnected thereto, said driven means of said one drum comprising a plurality of pins extending in a circular array from said one drum substantially parallel to the axis of rotation of said one drum, said first-mentioned drive means that drives said pins of said one drum comprising a gear rotatably mounted to said frame means to rotate about an axis substantially transverse to said axis of rotation of said one drum and meshing with certain of said pins.