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Publication numberUS1350131 A
Publication typeGrant
Publication dateAug 17, 1920
Filing dateJun 20, 1919
Priority dateJun 20, 1919
Publication numberUS 1350131 A, US 1350131A, US-A-1350131, US1350131 A, US1350131A
InventorsHenry Anderson Chester
Original AssigneeCortland L Hill, Richard Kleinbach H
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1350131 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




Patented Aug. 17, 1920.




Specification of Letters Patent.

Patented Aug. 17, 1920.

Application led June 20, `1919. Serial No. 305,451.

To all 'whom it may] concern Ie it known that I, CHESTER Il'. ANDER- soN, a citizen of the United States, and a resident of' Los Angeles, in the county of Los Angeles and State of California, have vinvented a new and Improved Clock, of which the following is a full, clear, and exact description.

This invention relates to clocks, and has for an object to provide an improved con-A struction wherein the time indicating means is arranged so that a number will indicate the hours and an oscillating pointer will indicate the minutes.

Another object of the invention is to provide a clock mechanism oscillating an arm or pointer and rotating a number dial, the arrangement being such that the mechanism may be connected to an ordinary minute hand shaft of an ordinary clock now in common use.

A still further object of the invention is to provide means which are capable of being connected to ordinary clock mechanisms now in common use, which will cause a minute hand or pointer to operate in proper time over a dial for indicating the minutes while moving numbers successively in front of an opening in the clock dial to indicate the hours.

In the accompanying drawing:

Figure 1 Ais a front view of a clock embodying the invention, the same illustrating the imrticular arrangement of dial.

Fig. 2 is a vertical sectional view through Fig. 3 on line 2 2.

1F ig. 3 is a rear view of the mechanism for moving the pointer and the hour dial shown in 1 and 2.

Fig. 4 is a horizontal sectional view through Fig. 3 on line 4 4.

Referring to the accompanying drawing by numerals, 1 indicates the shaft of a clock which carries ordinarily the minute hand. The remaining part of the clock is not shown in the drawing, as the particular construction of the clock forms no part of the present invention, whereas the present invention is merely connected t0 the shaft 1. This shaft, as shown in Figs. 2 and 3, extends through a suitable aperture in the rear of casing 2, which casing is comparatively thin, and which is provided with a face plate or dial 3, which is constructed as shown in Fig.

1. This face plate or dial is provided with an opening fl for showing the numbers 5 on the hour disk 6. In addition a bracket or fitting 7 is arranged in front of the dial and supported by suitable standards S extending into the casing 2, said iitting supportingfone end of the' shaft 9 to which the lever 21 is rigidly secured. A minute hand 10 swings back and forth between the zero mark 11 and the sixty mark 12. The hand or pointer 1() when swinging from zero to sixty moves at the regular rate of a minute hand of an ordinary clock, so that it will be one hour from the time the han d or pointer leaves the zero until it reaches the number sixty, but when moving back to zero it takes only a short time, as for instance the fraction of a second. This construction and arrangement permits any one to quickly see the time of day` both in hours and minutes.

he mechanism for producing the result just described is shown in elevation in Fig. 3, wherein it will be seen that the hour disk (i is loosely journaled on the shaft 1, but is held normally in a given position by spring 13 which is bent at 14. The bent portion 14 fits in between two of the teeth 15 of a toothed wheel 16 which is rigidly secured in any desired manner to the hour disk 6. The disk 6 is provided with a plurality of notches 17, there being twelve notches in order to indicate the different hours of the day. These notches are arranged on the periphery, in order to readily receive the hook end of arm 18, which arm is pivotally mounted at 19 on projection 20 of the operating lever 21. The operating lever 21 is rigidly secured to the shaft 9 and is being continually urged to swing toward the shaft 1 by spring 23 which is connected at one end to the lever 21 and at the other end to the stationary part of the casing 2. When the cam 24 slips off of the pin 25 carried by the lever 21 said lever will move under the action of spring 23 until it strikes the cam 24 approximately at the point 25 near shaft 1. This quie action under the impulse of spring 23 will cause the pointer or hand 10 to move back to zero on the graduations 26. At the same time the end hook of the arm 18 will engage in one of the teeth 17 and pull the hour disk 6 until it is moved sufficiently iar to expose another number through opening 4. When this occurs the toothed wheel 16 will be movedy against the action ot' spring 13 and' the bent portion 14 of the spring will snap between the next two teeth l5 for locking-the disk-1G in itsfne'w position. As the shaft l to which the cam 24 is rigidly secured con- X tinually rotates the minute hand 10 willV `-a dial plate having an arc-shaped graduaagain begin to move over its course toward the end l2.

In connection with the' arm 18 it will be noted that theV hook end thereof is preferably formed as a pin 22 which not only en# gages the notches 17, but also is engaged by a spring 27 so as to cause the pin to instantly'snap into the notch 17V when permitted to do so.

l/Vhat I claim isf l. A clock comprising a mechanism for rotating a shaft once in sixtygminutes, a cam rigidly secured to said shaft and rotated thereby, a dial having arc-shaped gradua-y tions thereon indicating the minutes ot'an hour, an opening adjacent said graduations, a pointer adapted to move over said graduations, :a shaft rigidly 'secured tothe pointer and extending through the dial, a leveryrigidly secured tof said shaft,'a pin extending Y said dial by thefcam, a spring secured to from said lever and engaging the face ot said cani whereby as the same is rotated said lever will be swung in one direction so that the pointer will `be gradually moved yover said.A graduations, a spring acting on said lever for quickly swinging the lever and the pointer cariied thereby back to the starting `point at the end of each sixty minutes, an hour dial formed with numbers thereon from one to twelve vand arranged so that one of the nuinerals may be seen through said opening, said hour dial being :formed with twelve notches thereon, a pawl pivotally mounted pawl adapted to engage the notches in said hour dial, and a spring for maintainingsaid pin against Vsaid hour dial 2. clock comprisinga shaft, mechanism tor rotating said shaft once in sixty minutes,

tion and indications for indicating the fminutes voan hour, said dial plate having an opening, a pointer adapted to move over said graduations,A aii'hour plate provided with notches on the periphery having numc bers thereon from one` to' twelve, arranged so that one of theV numbers may be seen through said opening, a shait secured to said pointer and 7extending through said dial plate, a lever arranged atthe back of the dial plate rigidly secured to said dial shaft, said lever having an arm extending ytherefrom substantially lat right angles theretog a pin extending from said lever adjacent its outer end, a cam rigidly secured to saidirst mentioned shaft, said cam being positioned so thatthe face thereofv will engage the pin l on said lever whereby the lever and pointer connected therewith will be moved across said lever for quickly swinging the lever bach to its starting point at the end of each sixty 'minutes, a pawl pivotally mounted on the outerend of said arm, a pin extending trom said pawl for engaging the notches in said lhour plate, and a spring for causing said

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3696609 *Mar 25, 1971Oct 10, 1972Marcel MingardTimepiece having oscillating rotation indicator
US5119349 *Dec 23, 1988Jun 2, 1992Citizen Watch Co., Ltd.Display device by means of a hand
US6327226Mar 17, 1998Dec 4, 2001Luca RussiClock with cam device
US7961560 *Jan 24, 2006Jun 14, 2011Seiko Epson CorporationDisplay device for timepiece, movement, and timepiece
US9075397 *Apr 6, 2012Jul 7, 2015Richemont International S.A.Chronograph mechanism
US20080159082 *Jan 24, 2006Jul 3, 2008Seiko Epson CorporationDisplay Device For Timepiece, Movement, and Timepiece
US20120257480 *Apr 6, 2012Oct 11, 2012Richemont International SaChronograph mechanism
EP1462875A2 *Mar 18, 2004Sep 29, 2004Franck Müller Watchland SARetrograde display mechanism for timepiece
WO1998043137A1 *Mar 17, 1998Oct 1, 1998Luca RussiCams device in order to change the rotary movement of the hands of a clock into an alternate movement along a 120° circular sector
U.S. Classification368/220, 368/238, 968/150
International ClassificationG04B19/08, G04B19/06
Cooperative ClassificationG04B19/082
European ClassificationG04B19/08B