DE105005C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 83: Clocks.

BROTHER THIEL in RUHLA i. Th. Hour and minute alarm clock.

Patented in the German Empire on January 29th, 189g.

The present invention aims to set the alarm times accurately for all of them Kinds of alarm clocks, so that these times are kept to within minutes (or parts thereof) can be. Such alarm clocks are known per se and the goal is, as with these known alarm clocks (See e.g. Patent No. 52769, class 83) also by a double lock of the rattle for hours and minutes. Meanwhile, here is the minute setting and blocking differently and designed so that they can be operated with the elimination of the hourly blocking can easily be put into use by itself, so that the clock is then a bare one Represents minute alarm clock.

For this purpose, the clock is provided with a setting pointer 17, which is handled as usual with alarm clocks, ie is set to the desired alarm time and is able to keep the time _{exactly up to about Y 4} hours. The way it works is known to be the following:

The alarm wheel 6 acts, driven by a spring force, on the armature 4, with its Shaft of the clapper 5 is firmly connected, thus the reciprocating movement of the Anchor is forced to perform and by hitting a bell or the like. brings out the wake-up noise. The protruding arm 8 of the clapper lever can now of the Locking spring 7 are held, which is done by the fact that one with the setting pointer 17 connected, located below the dial of the clock adjusting disk 14 a protruding Lug 13 of the hour hand wheel and this wheel, as it is on the locking spring 7 rests, presses it so deeply that the bent part of this spring 7 pushes the clapper arm stops at 8 (see Fig. 2). Only when the hour hand of the clock has rotated that far has that it covers the setting pointer 17, the nose 13 jumps into a notch in the setting disk 14 so that the spring 7 is able to push the hour hand wheel upwards, whereby the clapper at 8 is free.

However, this known device on many alarm clocks does not allow exact time observance, therefore the already mentioned second setting is with at least minute accuracy provided, which is set up as follows:

The so-called pointer shaft of the clock, d. i. a shaft that extends through the entire clockwork mechanism 16 (Fig. 2), has the usual minute hand on the front side of the dial, on hers At the rear end, on the back of the clock, there is now one with a minute division on this hand shaft provided adjusting disk respectively. a setting dial ι attached with resilient friction. The suspension can be achieved in a number of ways. In the drawing, for. B. assumed that a three-legged spring 2, one leg of which is shaped into a pointer is so attached to the pointer shaft that all three legs are resilient on the dial rest, the pointer-like leg is at the same time exactly as the minute hand is.

Due to the resilient friction that this three-legged spring exerts on the dial, if you take it with you, like the minute hand of the clock, it does in the Hour one turn. To be on the safe side, if the friction is not enough, that can also be done The setting dial has a hole or a notch in which an am

Claims (2)

Pin 20 located on the pointer snaps into place. The pointer and control sheet will rotate together in the direction of the arrow. At the edge of the setting dial there is a triangular incision 18. On the clapper shaft 4 a lever arm is now firmly driven so that it must also carry out the oscillating movement of the clapper, but the bent end 3 of this second lever arm lies against the beginning of the Setting dial 1, so that the clapper cannot yet swing, even if it is no longer held by the locking spring 7. Only when the rotation of the setting dial has progressed so far that the notch 18 releases the lever arm at 3 can the alarm clock stop. In order to set the alarm clock to a specific time of day, the hour setting hand 17 is initially turned approximately to the relevant point in time (in FIG. 3 the time 11 Y2 o'clock is assumed). If the wake-up call is now to be made at exactly 11:30 a.m., the setting dial 1 must be turned until the 30th minute is below the pointer 2, as shown in FIG. 1. Although the lever arm is now at 3 above the notch 18 of the setting dial, the clapper cannot yet move, because the clock only shows ι ο Y2, and only after an hour when the nose 14 of the hour hand wheel into the notch 14 of the setting disc snapped into place, so the clapper is free at spring 7, furthermore the setting dial has again reached the lever arm 3 with an incision 18, the clapper is released to make noise. In order to make the alarm clock suitable for waking in any definable time periods up to 60 minutes, the following device is made: The spring 7 is under the influence of a lever 9. In the usual position, as shown in FIG. 3, this lever is in its Position held by a locking spring 12 and the alarm clock can be set to a specific time of day. In some cases it is desirable not to be reminded of any activity, not at a certain time of day, but after a certain number of minutes, be it boiling eggs, telephoning, chemical processes, or the like. The lever 9 is then rotated into the position shown in FIG. 5, so that a wedge-shaped end 10 of this lever pushes itself under the long drive spring 7 and lifts it so high that the clapper arm 8 remains free from the spring 7, completely the same as the slide pointer 17 is. This raised spring 7 can be seen in FIG. Now the clapper is solely dependent on the setting dial ι, and as often as this makes one revolution and the incision 18 passes the lever 3, the clapper is free. If you want to set the wake-up call to a certain number of minutes within an hour, regardless of the time of day, you do not use pointer 2, but a pointer 19 attached to the case of the clock or the work plate. B. the 5th minute on the mark 19, no matter where at the moment the pointer 2 is, the clock will go exactly 5 minutes until the alarm clock calls. The clock will always go until the 60th minute division reaches the pointer 19, since then the notch 18 is always at the lever 3 and releases it. The alarm device can therefore be set to a specific time of day or, by turning the lever 9, to a relative time that is independent of the time of day. If, on the other hand, the lever 9 is pushed into the position shown in dotted lines in FIG. 5, so that the nose 11 engages in an incision 15 (FIGS cannot fall off. Instead of reaching into the incision 15 of the spring 7, the nose 11 can also be designed in such a way that the clapper arm 8 is caught directly by the nose. Godfather τ.-An Proverbs: 1. Alarm clock with hour and minute setting, characterized in that dafs on equipped with the known hour alarm setting pointer shaft 16 a special minute alarm disc 1 is loosely arranged by one on the same Shaft attached spring 2 is adjustable and has a notch 18 in which the alarm clapper 3 then fall in and thus strike the alarm mechanism free can, if at the same time by the known hour alarm device 13, 14, the locking spring 7 has released clapper 3. 2. The alarm clock of the ι under 1. marked kind, W plug after a certain number of minutes up to 60 minutes thereby allowing the ^r, that the locking spring excavated 7 of the hour setting by means of a provided with a chamfer 10 lever or thumb 9 and the Minutenweckscheibe is set using a fixed pointer 19 to the appropriate number of minutes. For this purpose ι sheet of drawings.