US871900A - Alarm-clock. - Google Patents

Description

No. 871,900. PATENTED NOV 26, 1907.

G. G. TRAUTMAN.

ALARM CLOCK. Arruo ulol nun [A128, 1001.

2 SHEETS-SHEET 2.

i. V L O CHARLES G. TRAUTMAN, OF CHICAGO, ILLINOIS.

ALARM-C LOCK.

Specification of Letters Patent.

Patented Nov. 26, 1907.

Application filed May 28. 1907 Serial No. 376,177.

T 0 all whom it may concern:

Be it known that I, CHARLES G. TRAUT- MAN, citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Alarm-Clocks, of which the following is a specification.

This invention relates to alarm clocks and has for its object to provide improved means for releasing the striking train or escape ment, and also improved means for repeating the alarm, producing what is known as a spasmodic alarm.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a front elevation of -a clock movement provided with the invention, the front plate being removed. Fig. 2 is a front elevation with the front plate and let-off wheels in place. Fig. 3 is a side elevation of the movement, with the casein section. Fig. 4 is a side view of a spring which operates the let-off.

The general arrangement of the time train and the striking train being old, no description thereof will be given.

The escape wheel of the alarm or striking train is indicated at 17, which when the train is released operates the escapement 16 whose rock shaft 16 carries a bell hammer 18. The rock shaft 16 carries a projecting arm 15 having a lateral extension 15 at its free end.

19 is a spring fixed to the front plate of the movement and having a rearwardly-extending projection 19 at its free end which is arranged to project or engage under the exten sion 15' of the arm 15, as indicated in Fig. 3, and when so engaged the escapement is locked. The spring 19 bears on its front side against or behind a gear 22 and tends to press said gear forward, allowing the part 19' to release or disengage the arm 15 and thereby release or let-off the alarm escapement, and causing the bell to ring. The gear 22 is mounted on a stud on the front plate and has a collar 20 in the front end of which is a notch 23. The stud on which the gear is mounted has a lug 21 adapted to enter said notch when the proper time or position is reached, said gear 22 being turned by a train from the hour wheel of the clock movement.

The alarm released in the manner above indicated will continue to ring indefinitely, but may be stopped by means of a push rod 6 which extends through the top of the clock ease and is provided with a button 1. At its lower end the push rod 6 bears upona proj ection 7 on a stop lever 8 which swings loose upon the arbor 12 of the clock movement. The lever 8 has at the upper end an arm 8 properly positioned and arranged to swing under the extension 15 of the arm 15 and prevents vibration of said arm and consequently locks the escapement. A spring 9 is set at its lower end in the hub of the lever 8 and normally holds the lever out of engagement with the arm 15. The lever has a spring pawl 13 which engages a ratchet 11 fast on the arbor 12.

hen it is desired to shut off the alarm the button 1 and rod 6 are pushed down which throws the arm 8 under the arm 15 and locks the escapement, which remains locked until the turn of the shaft 12 carries the ratchet 11 to such position that the arm 8 is swung away or clear of the arm 15. In other words, the arbor 12 and ratchet 11 will turn as in the ordinary clock movement, and the spring 9 acting on the lever 8 will cause said lever to swing to the right until the arm 8 is withdrawn from the arm 15. This lets off the alarm again. The object of this is to awake a sleeper, who having once heard the alarm and stopped the same by pushing down the button 1, goes to sleep again.

The alarm can be permanently shut off by pushing down the button 1 and at the same time giving it a twist to throw the pin 2 into the off-set slot 4. This looks the push rod 6 in depressed position and prevents any swing of the lever 8 and consequently holds said lever under the arm 15. Unless the button is positively turned to throw the pin 2 into the off-set slot 4, said pin will move up and down in the slot 3.

I claim:

1. In a clock, the combination with alarm mechanism, and time mechanism, of means to lock the escapement of the alarm mechanism, including alever having a spring tend.- ing to retract the same and release the escapement, and means controlled by the time mechanism to delay the releasing movement of the lever.

2. In a clock, the combination with alarm mechanism, including an escapement shaft having a projecting arm, and time mechanism having an arbor and a ratchet thereon, of a stop lever engageable with the arm and having a pawl engaging the ratchet, manually-operated means to swing the lever in engagement with said arm, and a spring tending to retract the lever, the action of the spring being delayed by the engagement of the pawl and the ratchet.

3. In a clock, the combination with alarm mechanism including an escapement shaft having a projecting arm, of a lever having an offset portion engageable with said arm to lock the escapement, a spring connected to the lever and tending to swing the same to release the escapement, a push rod engageable with the lever to advance the same to locking position, and means to fiX the push rod to hold the same in locking position.

4. In a clock, the combination in an alarm mechanism, of an escapement shaft having a projecting arm, a let-off gear wheel driven by the time train and having a sleeve with a notch thereon, a stud on which the wheel turns, having a lug adapted to enter the notch when registered therewith, and a spring bearing against the wheel and engaging the arm to stop the escapement, and adapted to shift the wheel when the notch reaches the lug, and release the escapelnent.

In testimony whereof I aflix my signature, in presence of two witnesses.

CHARLES G. TRAUTMAN.

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