US831233A - Intermittent-alarm clock. - Google Patents

Description

PATENTED SEPT. 18, 1906.

J. W. MORWAY.

INTERMITTENT ALARM CLOCK.

APPLICATION FILED JUNE 19,1905.

2 SHEETS-SHEET l.

No. 831,233. PATENTED SEPT. 18, 1906.

- J. w. MORWAY.

INTERMITTENT ALARM CLOCK.

APPLICATION FILED JUNE 19,1905.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

JOHN W. MORWAY, OF BRISTOL, CONNECTICUT, ASSIGNOR TO; THE E. INGRAHAM COMPANY, OF BRISTOL, CONNECTICUT, A CORPORATION.

lNTERMlTTENT-ALARM CLOCK- Specification of Letters Patent.

Patented Sept. 18, 1906.

Application filed June 19,1905. Serial No! 265,881.

To all wlumt it may concern:

Be it known that 1, JOHN 1V. MORWAY, a citizen of the United States, residing at Bristol, in the county of Hartford and State of Connecticut, have invented a new and useful Improvement in Intermittent-Alarm Clocks and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a view in front elevation of an intermittent alarm clock movement constructed in accordance with my invention, the front plate of the movement being removed; Fig. 2, a plan view of the movement; Fig. 3, a broken view in vertical section on the line a b of Fig. 2 looking in the direction of the arrow Fig. 4, a detached broken erspective view of the crown escapement-wlieel, showing the yielding intermittent-alarm pin carried by it; Fig. 5, a perspective view of the intermittent-alarm starwheel.

My invention relates to an improvement in "intermittent-alarm clocks, so called because the alarm instead of being sounded continuously is interrupted periodically until the spring runs down or the alarm is shut off, the object being to produce at a low cost for manufacture a simple and reliable mechanism constructed with particular reference to fewness of parts and economy of space.

WVith these ends in view my invention consists in mechanism having certain details of construction and combinations of parts, as will be hereinafter described, and pointed out in the claims.

In carrying out my invention as herein shown I mount a three-pointed star-wheel 2 so as to turn freely upon a let-off arbor 3, journaled in the usual manner in the front and rear movement-plates 4 and 5 and furnished at its rear end with a finger-button 6, by means of which it is manually turned in one direction or the other for setting the alarm. The star-wheel 2 carries a pinion 7 meshed into by the third wheel 8 of the timetrain, whereby the wheel 2 is driven in the direction of the arrow d on Fig. 1. A pinion 9 on the arbor 10 of the third wheel 8 meshes into the second wheel 11, which is mounted on the center arbor 12, carrying a pinion 13, meshing into the first wheel 14, which is mounted on the mainspring-arbor and carries a pawl 16, engaging with the teeth of a ratchet-wheel 17, secured to the said arbor 15, upon which the mainspring 18 is Wound and to which the inner end of the said spring is secured. The third wheel 8 also meshes into a pinion 19 on the arbor 20 of the fourth wheel 21, which meshes into a pinion 22 on the arbor 23 of the pallet-wheel 24, the teeth of which are engaged by a pallet 25 on the arbor 26, on which the escape-lever 27 is also mounted, the same coacting with a pin 28, carried by the balance-wheel 29, the escapement of which is controlled by a hair-spring 30. This train may be of any other approved construction; but however constructed and however arranged it will be employed to drive the star-wheel 2 in the direction of the arrow d.

The lower or inner edges of the long teeth of the star-wheel 2 coact with a yielding pin 31, formed by bending forward at a right angle one end of a coiled spring 32, the coil of which encircles the forward end of the arbor 33 of the crown escapement-wheel 34 of the alarm-train, the other end 35 of the spring being bent and passed through a hole 36 in the said wheel. The said arbor 33 carries a pinion 37, meshed into by a wheel 38, secured to a pinion 39, mounted on the let-off arbor 3, so as to turn freely thereupon, this arbor being normally held against rotation by the friction of a spring 40, encircling its rear end and interposed between the rear movementplate 5 and a collet 41, fixed on the arbor.

At its forward end the let-off arbor 3 passes through a letoif spring 42 of ordinary construction and having its free end turned in ward to form a finger 43 for engagement with a stop-wire 44, depending from the arbor 45, carrying the verge 46, which coacts with the wheel 34 and also carrying the hammer 47. The extreme forward end of the let-off arbor 3 is furnished with a let-off or alarm-cam pin 48, which rides upon the edge of a let-off or alarm-cam 49, carried by the minute-wheel 50, which is mounted upon the projecting forward end of the said arbor 3 and which meshes into a pinion 51, carried by the intermediate dial-work wheel 52', which meshes into a pinion 53 on the center arbor 12,which carries the minute-wheel 55, which meshes I position where the pin 31 clears it.

bor 57, carrying the alarm-spring 58, which exerts under this arrangement a constant effort to revolve the, escapement-wheel 34 in the direction of the arrow d. A shut-ofl lever 59 arranged in position to be engaged by the pin 31, is mounted upon a shut-off arbor.

60, arranged in close proximity to the vergearbor 45.

In using my improved intermittent-alarm clock the same will'be set in the usual mannerby means of the finger-button 6. Then when the cam 49 drops off, so to spealgthe pinv 48 the spring 42 disengages itself from the stop-wire 44. Now if the stop-lever 59 is turned tolclear the pin 31 the alarm-train will be released and the alarm sounded until the time train'has brought one of the teeth ofthe star-wheel 2 into position to be engaged by the pin 31, by means 'of which the alarmtrain will be arrested until the time-train has carried the said tooth of the starwheel:intoh a T e alarm will then be sounded for the interval required'for the time-train to rotate the star-' wheel 2 sufficiently to bring its next succeeding tooth into position to be engaged by the pin 31, which will engage with the lower edge of the said tooth and stop the alarm-train until the time-train has cleared this tooth from'the pin 31, and so the action of the clock will be continued until the spring 58 has run down or until the stop-lever 59 is thrown into the path of the pin by turning the arbor 60 by means of its finger-button 60 I wish particularly to call attention to the fewness of new parts employed byme and also that during the sounding of the alarm the power of the alarm spring 58 is virtually thrown upon the time-train for the reason that the power of the spring is constantly tending to turn the wheel 34, carrying the pin 3 1 in the direction of the arrow 01 the said pin being at the same time engaged with the under face of one of the teeth of the star-wheel 2, which is at the same time being actuated in rotation in the same direction by the time-train.

It is apparent that in carrying out my invention some changes from the construction hereinshown and described may be made. I would therefore have it understood that I do not limit myself thereto, but hold myself at liberty to make such departures therefrom as fairly fall within the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In anintermittent-alarm clock, the combination with the time and alarm trains thereof, of a star-wheel in gear with the time- The shuck-pinion 39 is en gaged by the main wheel 56 of the alarm' train, this iwheel being mounted upon an ar-- train andlconstantly rotated thereby, and a pin rotated by the alarm-train for coaction with the said star-wheel by-direct contact with the teeth thereof, whereby the alarmtrain isperiodically stopped and released by the successive engagement of the teeth of the star-wheel by the said pin.

2. In an intermittent-alarm clock, the combination with the time and alarm trains thereof, of a star-wheel in gear with the timetrain and constantly rotated thereby, and a yielding pin rotated by the alarm-train for coaction with the said star-wheel, whereby the alarm-train is periodically stopped and releasedby the successive engagement of the teeth of the star-wheel bythe-said pin.

3. In an intermittentalarm clock,.the combination with the time .and .alarmetra'ins thereof, of a star-wheeliin gear with the timetrain and constantly rotated thereby,.a pin rotating with the arborof ithe escapementwheel of the alarm-train ,for coaction :with the said. star-wheel'by direct contact with the teeth thereof, whereby the alarm trainlis,pe riodically stopped and released by the successive engagement of the .teeth of thevstarwheel by the said pin, and means .to engage with the pinto shutoff the alarm.

4. in anintermittentalarm clock,:,the com bination with the time and alarm trains thereof, of a. star-wheeliin gear with thetimetrain and constantly rotated thereby, and a yielding pin carried by the escapementwheel of the alarm-train and coacting with the teeth of the said star-wheel.

'5. In an intermittent-alarm;clock,thelcombination with the time and alarm trains thereof, including a let-off arbor, of a starzrotates it, and a pin rotated withthearborof the escapement-wheel of the alarm-train and coacting by direct contact with the teeth of :the said star-wheel by which the rotation of the pin and hence the actuation of thealarm- :train is periodically interrupted.

6. In an intermittent-alarm.clocl ,the combination with the time and alarm trains thereof, of a star-wheel continuously rotated by the time-train, and a pin carried by the alarm-train, coacting with the said starwheel by the teeth of which it is periodically engaged and constantly under the tension of the spring of the alarm-train whichtends to move it in the direction in which the starwheel is being rotated by the time-train.

7. In an intermittentalarm clock,-the combination with the time and alarm trains thereof, of a star-Wheel constantly driven by the time-train, a pin coacting with the said wheel and driven by the alarm-train, ashutoff arbor, and a shut-off lever mounted .on the said arbor and arranged to'be throwniinto the path of the said pin for shutting off the alarm.

8. Inanintermittent-alarm clock, the cornbination with the time and alarm trains thereof, of a star-wheel constantly driven by the time-train, and a yielding pin applied to the escapement-wheel of the alarm-train and formed by bending one end of a coiled spriig the coil of which encircles the arbor of the said escapement-wheel and the other end of which is connected with the wheel itself.

9. In an intermittent-alarm clock,the combination with the time-train thereof, of a star-wheel driven continuously thereby, a let-off arbor on which the said wheel turns loosely, and an alarm train including a shuck-pinion mounted on the said arbor, a main Wheel meshing into the said pinion, a second wheel driven by the said. pinion, an

JOHN W. MORWVAY.

Witnesses S. W. Howls, Hosns F. MANOR.

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