SU32384A1 - Stopwatch - Google Patents

Description

The proposed stopwatch is equipped with a watch dial, located in the center of the second hand and showing the number of revolutions of the second hand by the thirty-minute dial.

In FIG. 1 depicts a stopwatch in general; FIG. 2-stopwatch mechanism and FIG. 3-partial section through the axis of the second hand.

The proposed stopwatch consists of a second hand located at the center of the second 2, a six-hour clock dial and a thirty-minute dial 5 designed to determine the number of revolutions passed by the second hand 2, On the roller 20 under the second axis (Fig. 3) there is a plate with teeth. On racks 22 fortified: a roller 2J, on which a second arrow 2 is seated on top, and a bottom / 2 from below with a pin J8. In order to activate the second hand 2, it is necessary to press the button 7, as a result of which the lever 8 and

the pawl 9 is turned one division by the ratchet wheel W, which, acting on the lever J6, forces the latter, as well as the lever // s, release the plate 72, which under the action of the spring / 5 goes down, resulting in the pin J8 falling into the teeth of the plate /, . driven by a clockwork. When the button 7 is pressed again, due to the raising of the plate (2) and disengagement of the pin 8 from the teeth of the plate (arrow) 2, the arrow 2 stops. When the button 7 is pressed for the third time, the arrow 2 is set to 0.

The subject matter of the invention.

A stopwatch, characterized in that the small plate / 2 is transmitted to the second hand 2 by turning the pin J8, which falls down after pressing a button into the teeth of the small plate /, which is rotated from the clockwork. Fip1 Figure 2