DE182C - Seconds movement with jumping hand - Google Patents

Description

1877.

Class 83.

A. LANGE & SÖHNE in GLASHÜTTE (Saxony). Seconds movement with jumping pointer.

Patented in the German Empire on August 3, 1877.

The present invention relates to a new Secundenwerk (Seconde morte), which '' both by significantly simplifying the facility itself and the arrangement the same in the whole clockwork is advantageous from the known mechanisms of this kind differs.

The accompanying drawing shows the top view of the clockwork on an enlarged scale, with special emphasis on the parts related to the invention per se.

The large wheel b sits loosely on the pin a, which is strong at the top, of the so-called small-soil shoot; the same is held by a steel plaster c rubbed open at the upper end of the pin α . A small gold wheel d with ratchet teeth is firmly connected to the latter and rotates at the same time as the small bottom drive.

The connection between the ordinary clockwork and the seconds mechanism is established by two springs e ', e ² screwed onto the above-mentioned wheel b , namely by the fact that the gemstones f ¹ , / ^{2 set} in the end pieces of the springs are placed between the teeth of the gold wheel d lay. The large wheel b is in engagement with a 12th pinion g passing through the minute pinion, likewise the wheel h sitting on the axis of the latter with a smaller 7th pinion ζ; Furthermore, the wheel h connected to the latter engages in the 6th drive /, which makes a full turn in every second.

In order to achieve the jumping of the second hand starting from the center of the dial exactly from one second line to the next, a small lever m is connected to the last mentioned 6th drive / one end of which into a star ο von located on the axis η of the so-called gear wheel attacks six teeth. The star holds the lever m and thus the drive / respectively. the second wheel is temporarily fixed, only releases the lever after a second has passed, whereupon it completes one turn, in order to then lie with its long end on the next tooth of the star, after the following second make a new full turn etc

In the case of the stopping of the Secundenwerkes by the lever r, which lies with a pin against the lever m , the gear mentioned are BEZW. Wheels under the bridge q, as well as the wheel h still, and the springs e with the stones / 'and / ² alternately fall off the ratchet teeth of the gold wheel d .

The axes of the wheels i, k \ I, m, ο belonging to the seconds mechanism are stored on the one hand in the so-called plate /, on the other hand in the bridge q screwed onto the latter; the same is true of the uppermost part of the axis of wheels g and h.

The advantages of this described Secundenwerk facility are based:

ι. in the comparatively very simple construction, in that the entire clockwork has only a single barrel F ;

2. In the fact that when the seconds mechanism is successfully disengaged, i.e. the teeth of the gold wheel d under the stones / springs, the useful force acting in the clock neither increases nor diminishes, and thereby the even rate of the clock is not disturbed under any circumstances;

3. in the complete elimination of the annoying, so-called pointer air (i.e. the dead movement of the hands; in that the minute hand is here directly is connected with the so-called Grofsbodenentrieb, a gear translation at all becomes unnecessary;

4. a) in the possibility of easily attaching the device to any three-quarter platinum movement to be able to; .

b) to facilitate the removal of the seconds mechanism without dismantling the clock to have to, as well as eventual, the possibility of a complete elimination of the Secundenwerk without that this damages the appearance of the clock.

Claims (2)

Patent Claims: ι. The combination of the pin α, which is reinforced at the upper end, of the small bottom sprout with the large wheel b loosely seated on it, the steel plaster c, the springs <? ' and e ² , stones / 'and / ² and the golden ratchet wheel d. 2. The combination of the parts mentioned under .1 with the gear respectively. Wheels g, h, i, k, I, the lever m, the star wheel ο and the bridge q to achieve the purpose stated in the previous description. 1 sheet of drawings.