US 350433 A
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Description (OCR text may contain errors)
c. A. HUSSBY.
SECONDARY ELECTRIC CLOCK. Y
No. 350,433. Patented Oct. 5,1886.
UNITED STATES CHARLES L HUSSEY,
vor Nnw Yoan, n. v.
SECONDARY ELECTRlC CLCGK.
JPECIFICATION forming part of Letters Patent No. 350,433, dated October 5, 1886,
. .Application filedfTune 1S, 1856. Serial No. 205,949. (No model.)
T0 @ZZ whom, it may concern:
Be it known that l, Cruntns A. l-lUssEY, of New York, in the county and State of New York, have invented a certain new and useful Improvement in Electric or Secondary Clocks, of which the following is a specification. Y
My improvement relates to electric or secondary clocks, such as are used in a time-telegraph and operated under control of a primary clock or regulator arranged at a distant placeg I will describe an electric or secondary clock embodying my improvement, and then point out the various features in claim.
In the accompanying drawings, Figure l is a front view of an electric or secondary clock embodying my improvement, part of the dial being broken away,and also apart ofthe framework Supporting the mechanism being removed to exhibit features embodying the improvement. Fig. 2 is a transverse section of the clock, taken as indicated by the dotted line a; a, Fig. 1.
Similar letters of reference designate corresponding parts in both figures.
A shaft, e, is provided with a wheel, c', having sixtyteeth. This wheel e has combined with it a pawtlever, el, that has affixed to it an armature, c3, having electro magnets ci. This shaft cis a minute-shaft. ln other words, it makes a complete rotation once every hour to indicate the minutes upon the clock-dial. It has the the minute-hand of the clock affixed to it. Gearing or a train is combined with this shaft to transmit motion to the hourhand shalt which surrounds the minute-shaft.
The pawl-lever et has onerigid pawl, l, and a second pawl, 2, which is pivotcd to it and pressed against the wheel c by a spring. When the pawl-lever cL is vibrated by the attractive force of the electro-magnet 0*, its rigid pawl l is disengaged from the wheel e', and its pivoted pawl 2 is caused to move over the teeth or the wheel in the reverse direction to that in which the wheel moves when rotated. The stop-pawl `'/'prevents the wheel from moving while the pivoted pawl 2 of the paWl-lever e2 moves in this direction. As soon as the electro-magnet de-energizes, a spring, c, vibrates the pawl-lcver in the reverse direction, then the pivoted pawl 2 of the pawl-lever rotates the wheel c the distance of one tooth, and the rigid pawl il, ofthe pawl-lever re-engagcs with the wheel c', thereby preventing it from niov= ing farther than it is proper l'or it to move. The movement of the pawl-lever cl is limited by stops consisting of adjustable screws e.
The shalt c and the fulcrum of the pawl-lever ci are journaled .in the frame of the clock.
A tubular shaft, 0"@ is Fitted upon the shaft e, and is provided with a wheel, cl3, having thirty-one teeth, Combined with this wheel el is a pawl-lever, c, having aiiixed to it the armature c, of an electro-magnet, cm. The pawl-lever c is limited in its vibratory movements by stops c, similar to the stops c1S pre viously described. This pawl-lever is moved in one direction bythe electro-magnet cl, and retracted bya spring, c". Like the pawl-lever ci it has a rigid pawl, l, and a pivoted pawl, 2. The latter is held against the teeth of the wheel c by a spring., lVhen the pawl-lever cuis vibrated by the electro-magnet e, its rigid pawl l is disengaged from the teeth of the wheel, and the pivoted pawl 2 is caused to play over the teeth of the wheel e in the reverse direction te that in which the latter moves when rotated. As soon as the electromagnet releases the pawl-lever e, the spring e reti-acts the pawl-lever, causiu the pivoted pawl 2 to rotate the wheel cl3, and rigid pawl l to re-engage with the wheel eli, so as to pre vent it from being moved too farr lVhile the pivoted pawl 2 ol the pawl-levcr c plays over the teeth of the wheel c in the reverse direction to that in which the wheel moves when rotated, the stop-pawl f prevents the wheel from rotating. The tubular shaft c carries the hand which marks the day of the month upon the dial of the clock.
The electro-magnet c is for operating the mechanism whereby minutes and hours are indicated upon the clock-dial, and the electromagnet c operates mechanism whereby days of the month will be indicated on the dial.
It will be readily seen that the wheels eand c are rotated in the same direction. This is advantageous, because it is desirable that the ligures upon the clock-dial which indicate days of the month should be read in the same di rection as those which indicate hours ot' the day. By the arrangement indicated, the hour-hand and the calendar-hand will be caused to travel in the same direction around the dial,l The IOO - operating electro-magnets and pztwls are on opposite parts of the clock-case.
The ends ,of the Wires of the electro-magnets c4 el are connected directly or indirectly withV linc-Wiresin such :L Way that theyfwill operate at different times. The electro-magnet e* is intended to operate once it minute, and the y electro-nizwnet el once a da binartion of a minute-shaft, an hour-shaft surrounding said minnte-shztft, n train for transmitting motion to the hour-shaft from the 2o minnte'shaft, a, tubular calendar-shaft snrrounding the minute-shaft but otherwise independent of it, a pztwl-lever and an electroymagnet for operatingthe minute-shaft, and
another paWl-lever and electro-magnet for vop- 25 erating the calendar-shaft, the said shafts al1 being concentric, and the pnwl-levers and electro-magnets beingarranged on opposite sides of them, substantially as specified.
c. A. HUssEY.
DANIEL H. DRIscoLL, JAS. R. BOWEN.