US1239507A

US1239507A - Electric clock.

Info

Publication number: US1239507A
Application number: US86674214A
Authority: US
Inventors: Eugen Kling-Mueller
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-10-15
Filing date: 1914-10-15
Publication date: 1917-09-11
Anticipated expiration: 1934-09-11

Description

E. KLlNG-MULLER.

ELECTRIC CLOCK.

APPLICATION FILED OCT. 15. 1914.

1,239,507. Patented Sept. 11, 1917.

4- SHEETS--SMIET I.

FIG I.

7,. '1; Imwwfor Ellqe'n Mill /W116;

E. MING-MULLER.

ELECTRIC CLOCK.

APPLICATION FILED OCT. 15. 1914.

Patented Sept. 11, 1917.

4 SHEETSSHEET 2.

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E KLlNG-MULLER.

ELECTRIC CLOCK. APPLICATION FILED OCT. 15, 1914.

Patent-ed Sept. 11, 1917 4 SHEETSSHEET a.

lwwmom I Eug'enMiny-MVZer, M5

QHMMWW E. KLlNG-MULLER.

ELECTRIC CLOCK.

APPLICATION FILED OCT. 15. 1914.

Patented Sept. 11, 1917.

4 SHEETSSHEET 4.

Euyeiz UNITED STATES PATENT OFFICE.

. 1. EUGEN KLINe-MiILLnn, or PHILADELPHIA, PENNSYLVANIA.

ELECTRIC CLOCK.

Application filed. October 15, 1914.

To all whom it may concern.

Be it known that I, EUGEN KLING- MiiLLnn, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, a citizen of the United States, have invented certain new, and useful Improvements in Electric Clocks, whereof the following is a specification, reference being had to the accompanying drawings.

The invention relates more particularly to the mechanism for actuating the pendulum of an electric clock and to the train of mechanism actuated by the pendulum for operatin the arbors supporting the hands.

An object of the'invention is to simplify the train of mechanism for positively actuating the arbors supporting the hands from the movements of the pendulum.

A further object of the invention is to provide an electrically controlled means which gives an impulse to the pendulum at predetermined time intervals.

These and other objects will in part be obvious, and will in part be hereinafter more fully disclosed.

In the drawings which show by way of illustration one embodiment of the invention, Figure I, is a front'view of a portion of a clock embodying my improvements, with the dial and hands omitted.

Fig. II, is a vertical sectional view on the the line II, II, of Fig. I.

Fig. III, is a horizontal sectional View on the line III, III, of FigII.

Fig. IV,is a sectional View on the line IV, IV, of Fig. III.

Fig. V, is a detail in perspective showing the manner of pawling the ratchet wheel of the second hand and the means for operating the ratchet Wheel of the minute hand therefrom.

Fig. VI, is a detail sectional view on line VI, VI, of Fig. III, showing the ratchet wheel for the hour hand and the mechanism for actuating the same.

Fig. VII, is a detail in front elevation showing the controlling device for the contact actuating mechanism.

The invention consists,'generally, in providing a supporting frame on which is mounted a pendulum and this pendulum, at certain predetermined time intervals, is given an impulse through the instrumentality of an electromagnet which is energized so as to attract an armature carried by the pendulum. The contacts are closed Specification of Letters Patent.

Patented Sept. 11, 1917.

Serial No. 866,742.

by the swinging of the pendulum through devices which are in turn controlled by the train of mechanism operating the hands, so that said contacts are only closed at certain predetermined time intervals. The swinging of the pendulum actuates two pawls, first one and then the other, which together propel a ratchet wheel having an arbor to which is attached a second hand. As herein shown, this ratchet wheel for the second hand carries a cam which actuates an arm to swing a pawl for turning the ratchet wheel to which is attached the minute hand. This ratchet wheel for the minute hand in turn actuates a cam which swings an arm for operating a pawl which actuates a ratchet wheel for the hour hand.

Referring more in detail to the drawings, my improved electric clock consists of a supporting frame 1, on which is mounted a pendulum 2.

Mounted on the frame is a central arbor 3, to which is attached a ratchet wheel l. This arbor carries the second hand indicated at 5, and is supported at its inner end by a plate 6, and at its outer end within a sleeve 7, projecting from a bracket 8, secured to plate 6. (Fig. IV). The ratchet wheel 4:, is operated upon by two

pawls

9, and 10. These pawls are carriedby a pallet lever 11, which is pivoted to a bracket 12, attached to the plate 6. This pallet lever 11, has an upwardly extending arm 13, which is slotted so as to engage a pin 14, bent laterally from a shank 15, secured to the pendulum head 16, and adapted to move in unison with the pendulum. As the pendulum oscillates the pallet lever 11, will be rocked on its pivotal support. As it is rocked to the position shown in Fig. I, the pawl 9, moves the ratchet wheel 1, forward. As the pallet lever swings in the opposite direction through the swing of the pendulum, the pawl 10, becomes effective to turn the ratchet wheel 4, and the pawl 9, is retracted so as to engage the next tooth. Through the swinging of this pallet lever the ratchet wheel is advanced the distance of one tooth for each half oscillation of the pendulum.

Secured to the arbor 3, directly adjacent the ratchet wheel a, is a cam 17. Loosely mounted on the stationary sleeve 7, is a movable sleeve'18, which carries a ratchet wheel 19. Mounted on the plate 6, is a swinging arm 20, which is fixed to a sleeve 21 carrying another arm 22, which bears on the cam 17. A pawl 23 is pivoted to the arm 20, and engages the ratchet wheel 19. When the parts are positioned as shown in Fig.- V, thev rotation of the cam 17, raises the arm 22, thereby gradually turning the ratchet wheel 19 by means of the pawl 23, and when the cam has made a complete rotation, the arm 22, drops by gravity from the high point of the cam to the low point thereof, and this retracts the pawl 22, quickly so as to cause the same to engage the next tooth. The minute hand indicated at 24, is secured to the. sleeve 18. The sleeve 18 is supported by a stationary sleeve 25, which extends from a bracket 26, also secured to plate 6.

Loosely mounted onthe stationary sleeve 25, is a movable sleeve 27, to which is attached the hour hand 28. A ratchet wheel 29, is fixed to the sleeve 27, and turns therewith. Mounted onthe sleeve 18, is a cam 30. A pawl 31, actuates the ratchet wheel 29. This pawlis pivoted to an arm 32, which is fulcrumed at 33, to the bracket 26, see Fig. VI. An arm 35, is pivoted at 36, to the bracket 26, and is provided at its free end with a pin 37, adapted to rest on the cam 30. This arm carries another pin 38, which engages the arm 32, for swinging the pawl 31. WVhen the parts are positioned as shown in Fig. VI, the turning of the cam 30, will gradually raise the arm 35, which will gradually move the pawl 31, forward, thereby-turningthe ratchet wheel 29. When the arm 35, drops from the high point of the cam to the low point thereof, the pawl31, will be quickly retracted and engage the next tooth of the ratchet wheel 29. The teeth of the

ratchet wheels

4, 19 and 29, are proportionate in number as well known in this art, and are each provided with a safety detent 39, to prevent any return movement.

From the above description, it-will be apparent that the ratchet wheel attached to the arbor of the second handis positively actuated through the swinging of the pendulum and this ratchet wheel through the pawl 23, turns the ratchet wheel 19, and the ratchet wheel 19, through the pawl 31, turns the ratchet wheel 29. V

The pendulum is given an impulse at certain time intervals through the following mechanism. Mounted on the frame 1, is an electromagnet 40. This magnet is energized by an electric current which is controlled by the contacts 41, and 42. An armature 43, is mounted on a bracket attached to the pendulum 2. This armature swings to a point adjacent themagnet and when the circuit is closed, the armature will be drawn directly wider the magnet which will give a little further swing to the pendulum or an impulse thereto. The contacts 41, and. 42, are closed by an extension 45, which is fixed to a depending arm 46, mounted'on a lever 47. The contacts 41, and 42, are supported by an insulating block which is provided with a projection 44, by which the head on the extension 45, is supported when in normal position.

The lever 47, is attached to a sleeve pivoted at 48, and this sleeve carries a second arm 49, supporting at its free end a pin 50, which cooperates with a cam disk 51, attached to the arbor of the second hand. This disk is notched at 52. When the notch in the disk reaches the pin 50, at the end of the arm, the pin drops and this lowers the arm 46, so that the finger 53, will be engaged by a pin 54, on the pendulum, which will raise the arm 46, and cause the extension 45, to engage the contact 42, and move theIsame against the contact 41. See Fig. VI

\Vhen the pin 50, of arm 38, rests on the outer edge of the disk or is withdrawn from the notch, thenthe arm 46, will be moved beyond the path of the pin 54, 011 pendulum 2. Inasmuch as the disk 51, is mounted on the arbor of the second hand, said disk will rotate once a minute and therefore will give an impulse to the pendulum at time intervals one minute apart. In certain cases the pendulum may require more than one impulse per minute, in the event of which the disk 50, may be further notched in accord, ance with these conditions. i

It is obvious that minor changes in the details of construction and arrangement of parts may be made without departing from the spirit of the invention as set forth in the appended claims.

Having thus described my invention, I- claim:

1. In an electric clock, the combination of a swinging pendulum, a ratchet wheel actuated thereby, a clock train actuated by said ratchet and means for giving an impulse to said pendulum, including an electro-magnet, an armature attached to the pendulum, a movable contact for the circuit of the electro-magnet, a notched disk connected to said ratchet, and means connected therewith for closing said contact, whereby said pendulum is givenan impulse for eachrevolution of said notched disk.

2. In an electric clock, the combination of a swinging pendulum, a ratchet wheel actuated thereby, a clock train actuated by said ratchet, and means for giving an impulse to said pendulum, including an el'ectro-magnet, an armature attached to the pendulunn e movable contact for the circuit of the aloe;- tro-magnet, anotched disk connected tosaid ratchet, a depending arm adapted to close said contact when actuated by said pendnvlum, and means whereby said arm is lowered into position to be actuated'by said pendulum at each revolution of said notcheddisk.

3. An electric clock including in combination, a ratchet wheel, a swinging pendulum,

a pallet lever actuated directly by said pendulum, paWls carried by said pallet lever and operating said ratchet wheel, a second hand positively connected to said ratchet Wheel, a second ratchet Wheel mounted to turn about the axis of the first ratchet wheel, a minute hand positively connected to said second ratchet Wheel, a pawl actuated by the first ratchet Wheel for turning said second ratchet Wheel, a third ratchet wheel mounted to turn about the axis of the first ratchet Wheel and an hour hand connected to said third ratchet Wheel, a pawl actuated by said secondratchet Wheel for turning said third ratchet Wheel and means for giving an impulse to said pendulum including an electromagnet, an armature attached to the pendulum, a movable contact for the circuit of the when said lever is lowered by the notched disk to bring said arm into range of said pin.

In testimony whereof, I have hereunto signed my name, at Philadelphia, Pennsylvania, this thirteenth day of October, 1914.

I EUGEN KLING-MULLER.

Witnesses:

JAMES H. BELL, E. L. FULLERTON.

copies or this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.