US699387A - Clock striking mechanism. - Google Patents

Description

Pafnted May 6, 1902.

H. M..HUNT.

CLOCK STRIKING MECHANISM.

l (Application led Feb. 4, 1901.)

6 Sheets-Sheet I.

(No Model.)

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No. 699,387. Patented May 6, |902.

H. M. HUNT.

A CLOCK STRIKING MECHANISM.

(Application med Feb. 4, 190m (No Model.) 6 She ets-Sheet 2.

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No. 699.387. Patenten May s, |902.

H. M. HUNT.

CLOCK STRIKING MECHANISM.

. f (Application led Feb. 4, 1901.)

(No Model.)

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No. 699,387. Patented May 6, |902.

H. M. HUNT.

CLOCK STRIKING MECHANISM.

(Application filed Feb. 4,v 1901.) (No Model.) 6 Sheets-S'heet 4 @wow/Hoz No. 699,387. Patented `May 6, |902.

H. M. HUNT. CLOCK STRIKING MECHANISII. Y mppucgtion'mea reb;4, 19o1.) (lo Model.) e sheets-.shunt 5.

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No. 699,387. Patented May 6, |902.

H. M..HUNT.

CLOCK STRIKING MECHANISM.

` (Application led Feb. 4, 1901.) (Ilo Model.) 6 Sheets-Sheet 6.

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dial-train of gears 16, Fig. 1.

speciication.

`Figs-.1 and 3; a pinion 27, Fig. 1, carried by 'UNITED STATES.

VPATENT Grimes.

HENRY M. HUNT, OF INDIANAPOLIS, INDIANA.

vCLOCK sTalKlN G M ECHANISM.

SPECIFICATION forming part of Letters Patent No. 699,387, dated May 6, 1902.

l Application fuearebrmy 4, 1901. serai No. 45,311. No moana To all whom, t mrtg/conceive:

Be it known that I, HENRY M. HUNT, a citizen of the United States, residing at Indiani apolis, in the county of Marion and State ofL Indiana, have invented a new and useful Striking-Clock, of which the following is a My invention relates to an improvement in' clocks in which the time is indicated'by an audible signal.

The object of my present invention is to provide mechanism by means of which the exact time may be indicated by anaudible signal, said ymechanism being driven by the same motor which drives the time-train.

The accompanying drawingsl illustrate my invention.

Figure 1 is a front elevation of Ymy improved mechanism, the faceplate being omitted. Fig. 2 is a side elevation. Fig. 3 is a top plan'. Fig. 4 is a perspective of the strik-y ing-wheel. Fig. 5 is a plan of the strikingwheell and bell-hammers with the positioning-cams indicated in dotted lines. Fig. 6 is a section on line 6 6 of Fig. 3. Fig. 7 is a section on line 7 ot' Fig. 2 of the cam-operating star-wheels and immediately adjacent parts. Fig. 8 is a rear elevation of the parts shown in Fig. 7. Fig. 9 is a face view ot' the clock.

In the drawings, 12 indicates the centerl arbor, to the outer end of which is secured the minute-hand 13. Revolubly mounted on arbor 12 is a sleeve 14, Figs. 2 and 3, to which is secured the hour-hand 15, said sleeve being driven from the arbor 12 by the usual Arbor 12 may be driven by any suitable motor, in the present case said motor consisting of a pair oil mainsprings 17, Fig. 1, each of which is connected to a gear 18, both ofv which gears mesh with a pinion 1,9, which carries a gear 20, said gear-meshing with a pinion 21, mounted upon arbor 12, so as to have a frictional engagement therewith. The movement ofthe arbor 12 is controlled in the usualmanner'by the balance-wheel 22, Fig. 1, lever 23, pallet 21, and escape-wheel 25, said escape-Wheel being geared to arbor 12 by the usual time-train, consisting of a gear 26, secured to pinion 21,

an arbor 28 and meshing with gear 2G; a gear 29, secured to arbor23 and meshing with a pinion 30, revolubly mounted upon'an arbor 31'a gear 32, secured to pinion 30 and meshing witha pinion 33,' secured to arbor 34 of the escape-wheel 25. Secured to arbor 31 is a friction-spring 31', Fig. 2, which engages gear 32 in the usual well-'known manner, so as to form a frictional driving connection between said gear and arbor.

IE desired, the striking mechanism now to bedeseribed might be driven directly and positively from the time-train but for obvious reasons relating to convenience of setting I have provided an independent train of gears, which, however, are connected to the same motor. The gears of this train are in many cases the same size as the gears of the time-train. (Seel Figs. 2 and 3.)

Mounted upon arbor 12 immediately to the rear ofv gear 26 is a gear 35, the same size as gear 26 and having a frictional driving connection -with the arbor 12. Meshing with Vgear 35 is a pinion 36, of the same size as pinion 27. Pinion 36 is mounted upon arbor 23, and secured` to said pinion is a gear 37, which meshes with a pinion 38, secured to arbor 31. It will be noticed that by this means arbor 31 may be rotatedindependently of the escape-wheel and motor. This construction makes possible the setting of the striking mechanism and the several dialpointers without interfering with the timetrain.

It is my intention to provide mechanism by means of which each minute of the day may be indicated audibly by its own distinctive signal, the hour being iirst designated by and the number of minutes passed in the tenminute interval indicated being indicated by a propernumber of strokes. In other words, the nomenclature u-sed will be that commonly known as railroad time, in which the time is described bya statement ot' the hour, the number of ten-minute intervals following the hour, and the minutesin the ten-minute interval named, thus the time indicated in Fig. 9 being 7.59. The signals may be struck upon a single bell, if desired; but I prefer to provide three bells of different sounds-the IOO.

hour-bell 39, Fig. l, the ten-minute bell 40, l hammer which strikes the ten-minute interand the minute-bell 4l. Bell 39 is carried upon the outer end ot" a lever 42, which is pivotally supported upon an arbor 43, Fig. 2, supported between suitable adj Listing-screws 44, mounted upon the frame. tell is carried upon the outer end of a lever 45, similar to lever 42, and supported upon an arbor 4G, Fig. 2, similar to arbor 43. Bell 4l is carried upon the outer end ot a lever 47, which is mounted upon an arbor 4S, Figs. l and 2, similar to arbor 43. The inner end of lever L. 2 is provided with a depending end adapted to be engaged by a cam 50, which is carried by an arbor 5l.. Secured to arbor 5l is a star- Whcel 52, Figs. l and 3, by which the arbor 5l and cam 50 may be intermittently rotated, the arrangement being such I(hat a rotation of cam 50 will cause lever 42 to be swung about its axis. Similarly the inner end of lever engages a cam 54, which is sleeved upon an arbor 55. Secured to cam 54 is a star-wheel 5G, Figs. 2, (3, and S, and a gear 57. The inner end of lever 47 engages a cam 59, which is secured to arbor 55. Secured to arbor 55 is a star-wheel GO. Pivotally mounted upon lever 42 is a hammer-lever 6l, which at its outer end carries a hammer 62, adapted to strike bell 39. Pivoted upon lever45 is a hammer-lever 63, which carries upon its outer end a hammer G4, adapted to strike bell 40, and pivoted upon lever 47 is a hammerdever 65, which carries at its outer end a hammer 6G, adapted to strike bell 4l. The several hammer-levers are all operated by a single element 67, which Iterm the striking-wheel, which is seen red to arbor 31. Projecting from one face of disk G7 is a series of nine pins (58, said pins projecting from the face ot wheel G7 parallel to the axis and heilig graduated in length in regular sequence. These pins 68 are for the purpose of operating the hammer of the 1ninute-bell4l, and the inner end of hammer-lever 55 is therefore extended be neath the cam 59, so as to project into the cylinder of movement of said pins, as clearly shown in Figs. l and 5. Projecting from the opposite face of wheel G7 is a series of twelve pins 69, which are graduated in length in regular sequence, as clearly shown in Figs. 2, 4, and 5. The pins U9 are for the purpose of operating the hammer which strikes the hour, and the inner end ot the lever Gl is therefore extended, so as to pass beneath cam and project into the cylinder ot' movement ot pins 69. Projecting also from the same face of the Wheel 67, but arranged in an arc ot' shorter radius than the arc of arrangement ot' pins (J9, is a series of live pins 70, the shortest one oi' which is longer than the longest pin Gi). rlhe lengths of these pins are varied, no two being the same length, and, if desired, may be arranged in regular sequence. In the present case Ihave shown the middle one the longer and the shorter pins arranged alternately upon each side of said middle pin. Pins 70 are ii'or the purpose of operating the vals, and lever 63 is therefore passed beneath cam 54, so as to project into the cylinder ol movement ot' said pins.

For the sake of convenience it is desirable that a striking-signal be given preliminary to the beginning ofindication of each minute ol' time, although this is by no means necessary. For such purpose, however, I secure to wheel G7 three pins GS, 69', and 70'. Pin (58 projects from the same side as pins G8 and is a trifle longer than the longest ot said pins. Pins (39 and 70 project from the same face as pins G9 and 70, and pin (59' is ol the same length as the longest pin (59, while pin 70 is a trifle longer than the longest pin 70. Pins (38', (59', and 70 are so arranged upon wheel 67 that they will be brought simultaneously or nearly simultaneously into engagement with their respective hammer-levers (35, (il, and 63, so that a Striking-signal which is a compound of a simultaneous striking of all three of the bells 39, 40, and 4l may be had. Pins 68, (59, and 70 are so arranged upon the wheel 67 that the entire group ot' pins 69 will pass the hammer-lever (il, cooperating therewith, before the first one ol pins 70 comes into engagement with the hammer-lever G3, and the ent-ire group et pins 70 will pass hammer-lever G3 before the first one ot pins (5S comes into engagement with hammer-le ver 65. The relation ot gearing is such that arbor 3l is given a complete revolution once each minute, and the arrangement ot' pins upon wheel (57 is therefore such that each minute the ham mer-lever (3l will be operated, so as to strike bell 39 to indicate the hour. Hammer-lever 63 will then be operated so as to strike bell 40 to indicate the number ol ten-minute intervals past the hour, and hammer-lever G5 will then be operated so as to strike bell 4l, so as to indicate the number of minutes past in the ten-minute interval indicated. The number of strokes which any one of the hammers will deliver to its bell depends upon the number of pins carried by wheel G7 which engage said lever, and this number of pins is automaticallycontrolled by the position ot cams 50, 54, and 59, said cams controlling the position ol the levers 42, 45, and 47, respectively, and the consequent position ol' the inner ends of the hammer-levers Gl, U3, and (55, respectively, with relation to the wheel (i7. Levers 42, 45, and 47 are urged in one direction so as to be held into contact with their respective cams by springs 42', 45, and 47C Hammer-lever must have its inner end shifted with relation to pin (3S once each minute, and for this purpose gear 87 is provided upon one face (sce Figs. 2 and 8) with a series of ten short projecting pins 7l, which are arranged to be brought into engagement successively with the teeth ot star-wheel U0. Star-wheel being composed of ten equally-spaced lingers, a complete revolution of gear 37 causes a complete revolution of cam 59, said revolu- IOO IIO

' increasing number of pins 68.

lonce each hour.

tion taking place in each ten minutes. At the tenth minute lever 47 is thrown by its cam sufficiently far from wheel 67 to cause hammer-lever 65 to entirely avoid all of the pins 68. During the succeeding ten minutes cam 59 is advanced step by step, so as .to shift hammer-lever 65 successively toward wheel 67 into successive engagement with an Hammer-lever.63, which strikes bell 40 to indicate the ten-minute periods in the hour, must be shift-V ed at least five times during the hour, as no signal isgiven upon this bell'during the firstV Y must be advancedby some other means than cam 59 or its operating parts. For this purpose gear 37 is provided upon the t'ace opposite pins 7l withla single pin 72, (see Figs. 6 and 7,) which is adapted to be brought into engagement with any one of the sixteeth on the star-wheel 56, which is secured to cam 54. By this .meanscamt is advanced one-sixth of a revolution for each revolution of cam 59, and hence is given a complete revolution Cam 150 which controls the position` ot' hammer-lever 6l, must be moved one step in each hour and given a complete revolutioneach twelve hours. For this purpose a star-wheel 52 is secured to the arbor 5l of saidcamuO, in position where any one of the twelve fingers ofv said star-wheel may be engaged by al pin 74, Ewhich is carried by the star-wheel `56, the arrangement being such that for each revolution of star-wheel 5 6 and the attached cam 54 star-wheel 52,-

with its-attached` cam 59, will be given onetweltth of a revolution.

Arbor 5,1 is extended through the face-plate 75 and a hand `7(1-,placed thereon to traverse a dial 77,`havingnumerals from Il to l2 3, andfor the purpose of adjusting said cam I provide an arbor 82, Fig. 3,1which is extended througirthe face-plate 75 and provided with a thumb-nut 83 and a handI 84, Fig. 9, which traverses a dial 85, marked withnumeralsfrom .10 tof 60. Secured 'lo arbor 82 isa gear 86, Figs. 3 and 8, whichA mesheswith gear` 57, secured to cam 54.

The facevof the Aclock is provided withthe usual dial, whichl is traversed -by hands-13 ends of the `hammer-levers.

purpose I provide a rock-shaft 87, provided v with arms 88, 89, and 90, the outer ends of which are arranged beneath the ends of -hammer- levers 6l, 63, and 65, respectively. Rockshaft S7 is extended through the face 75 and provided with a hand 91,whieh may be thrown toward the -Words Striking or Silent marked upon the face, the arrangement being such that when thrown toward the word Silent arms 88, 89, and, 90 will Vlift the hammer-levers and throw their inner ends out of the paths of movement of the pins 69', 70, and 68, respectively.

The-,operation is as follows: The strikingwheel 67 is continuously advanced, said wheelbeing in direct frictional driving connection with the time-train and makinga com plete rotation once each minute, the arbor 3l `thereof -being,\if desired, extended through given irrespective of the positions of the cams and consequent lateral positions of the inner illustration the several parts are shown in po` sition to indicate the time 7.59, as indicated by the dials in Fig. 9. At this timelever 42 has been lmovedby its cam 50until the IOO For the sake of inner end of hammer-lever 6l lies a sufficientv to wheel 67, so that it lies in the path o' move# Thetirst of said` ment of all five of pins70. pins -comes into engagement with hammerlever 63 immediately after the last pin 69has passed hammer-lever 61, thus operating hammer-lever 63 tive times, so as to strike bell 40' .five times. Lever 47 liesat one extreme of cam 59, so that the innerend of hammer-le'- i ver65 lies at its `closest point' to 'wheel 67,

and thereby inposition to be engaged lby all of said pins 68, theirst of said Y'pins coming into engagement 'with hammer-lever 65 im Vmediately after theV last pin70has passed `hammer-lever 63, and thuscausin'g hammer 66 to strike bell 4l nine times.V The actual time is thus indicated'by the strokes 7, 5,9 :in successioneachseries of strokes being upona different bell and being slightly separated one from the other.

Soon after this' signal has been completed pins CSQ 69, and 70 come again into simultaneous engagement with the several hammer-levers. At the same time gear 37 has been rotated, so as to bring one of pins 7l in engagement with the starwheel G0, so as to rotate arbor 55 one-tenth of a revolution, turning cam 59 through the same angle and allowing lever 47 to be swung immediately to the opposite end of cam 59, so as to throw hammer-lever 65 to the farthest point from wheel 67, and thereby be entirely out of the path of movement of all the pins G8. At the same time pin 72 has been brought into engagement with star-wheel 5G, so as to advance said wheel and cam 54, attached thereto, one-sixth of a revolution, said movement allowing lever 45 to be forced to the opposite extreme of: cam 5t, so as to throw hammer-lever 63 out of the path of movement ot' the pins 70.

It is to be noticed that the wheel G7 is in direct connection with the time-train and is continuously rotated. It will be further noticed that the hammer-levers are carried upon swinginglevers, and the positions of the inner ends of said hammer-levers are determined by the swinging movement of their supporting-levers, said swinging movement being accomplished by mea-ns of the respective cams, which cams are intermittently rotated by the time-train. The action of the swinging levers which support the hammer-levers is such as to require but little power, so that very little resistance is offered to the motor and there is no probability of any cramping action due to the shitting of positions of the hammer-levers with relation to the strikingwheel.

It will be readily understood that, if desired, means for throwing the hammer-levers into or out of operative position with respect to the striking-wheel may be introduced, so thatlevers may be thrown out of or into striking position from a distant point. Such an arrangement may involve the well-known use of an electromagnet cooperating with an armature carried by the rock-shaft 87.

By the mechanism described a correct timesignal is given for each revolution of the striking-wheel, so that there need be no introduction of any means for preventing the operation ofthe striking-wheel upon the hammer-levers because of an incorrect relative position, which would result in the indication of incorrect or only approximate time, the mechanism being always in position to indicate the correct time within the range of the smallest division of time commonly used.

I claim as my inventionl. In a strikingclock,the combination with a revoluble striking-wheel, and means for rotating said wheel once during each period of time indicated, of a graduated series of pins carried by said strikingwheel, a lever, a hammer-lever pivotally mounted upon said lover and arranged to be engaged by said pins, a bell, and means for swinging said lever so as to shift the hammer-lever to vary the number of pins engaging said hammerlever.

2. In a striking-clock, the combination with a revoluble striking-wheel, of a graduated series of pins carried by said striking-wheel, a lever, a hammer-lever pivotally mounted upon said level' and arranged to be engaged by said pins, a bell, means for swinging said lever so as to shift the hammer-lever to vary the number of pins engaging the hammer-lever, and means for carrying said pins past the hammer-lever once each period of time to be indicated.

3. In a striking-clock, the combination with a revoluble striking-wheel, and means for rotating said wheel once during each period ol time indicated, of a graduated series of pins carried by said striking-wheel, a lever, a bell mounted upon said lever, a hammer-lever pivoted upon said lever and arranged to be engaged by said pins, and means for swinging said lever so as to shift the hammer-lever to vary the number of pins engaging said hammer-lever.

LI. In a striking-clock, the combination with a revoluble striking-wheel, and means for rotating said wheel once each minute, of a series of twelve graduated hour-pins carried by said wheel, a series of iive graduated ten-minute pins carried by said wheel, a series of nine graduated minute-pins carried by said wheel, three levers, three bells, a hammer-lever pivotally mounted upon the First of said levers and adapted to be engaged bythe hourpins, means for swinging said first lever so as to vary the number ot' hour-pins engaging its hammer-lever, a hammer-lever pivoted upon the second lever and adapt-ed to be engaged by the ten-minute pins, means for swinging said second lever so as to vary the number of pins engagingits ham mer-lever1 a hammerlever pivoted upon the third lever and adapted to be engaged by the minute-pins, and means for swinging said third lever to vary the number of pins engaging its hammer-lever.

5. In astriking-clocli, the combination with a revoluble striking-wheel, and means forrotating said wheel once each minute, of a series of twelve graduated hour-pins carried by said striking-wheel, a series of five graduated tenminute pins carried by said wheel, a series of nine graduated minute-pins carried by said wheel, three levers, three bells, one carried by each of said levers, a hammer-lever pivotally mounted upon the first ot said levers and adapted to be engaged by the hour-pins, means for swinging said iirst lever so as to vary the number of hour-pins engaging its hammer-lever, a hammer-lever pivoted upon the second lever and adapted to be engaged by the ten-minute pins, means for swinging said second lever so as to vary the number ot' pins engaging its hammer-lever, a hammerlever pivoted upon the third lover and adapt- IOC) llO

said wheel, a series of live graduatedten-minute pins carried by said wheel, a series ot nine graduated minute-pins carried by said wheel, a lever, a hammer-lever pivoted upon said lever and arranged to be engaged by the minute-pins, a cam arranged to engage the said lever, means for moving said cam so as.

to swin g said lever through its range ot' movement once in each ten minutes, a second lever, a hammer-lever carried by said second lever and arranged to be engaged by the ten-minute pins, a cam, means for advancing said cam step by step through the range of its movement once each hour, a third lever, a hammer-lever carried thereby and arranged to be engaged by the hour-pins, a cam engaging said third lever, means for advancing said cam step by step once each hour so as to swing said third lever through its range of movement once in twelve hours, and ythree bells arranged to cooperate with the hammerlevers. 1 y

7. In a striking-clock, the combination with a revoluble striking-wheel, and means for rotating said wheel once each minute, of a series of twelve graduated hour-pins carried by said wheel, a series of five graduated ten-minute pins carried by said wheel, a series ot' nine graduated minute-pins carried bysaid wheel,a

swinging lever,ahammerlever carried by said t lever, a rotatable cam-engaging saidirst lever, means for advancing said cam step byvancing said star-wheel intermittently one-- sixth of a revolution each ten minutes, a third lever, a hammer-lever carried thereby in position to be engaged by the hour-pins, acain arranged to engage said third lever, a twelvepoint star-wheel connected to saidcam,means carried by saidsiX-point star-wheel for advancing the twelve-point star-wheel once each revolution, and three bells arranged to coopcrate with the hammer-levers.

8. In a striking-clock, the combination with a revoluble striking-wheel, and means for rotating said wheel once each minute, of a series of twelve graduated hour-pins carried by said wheel, a series of five graduated ten-minute pins carried by said wheel, a seriesof.

- nine graduated minute-pins carried by said wheel, three hammer-levers and cooperating bells, saidhammer-levers being arranged to be engaged respectively by the hour-pins, tenminute pins, and minute-pins in succession,

ver once each minute, means for changing the relative position of the ten-minute pins and cooperating hammer-lever live times each hour,and means for changing the relative position of the hour-pins and cooperating hammer-lever once each hour.

9. In a striking-clock, the combination with a revoluble striking-wheel,of a series of twelve graduated hour-pins carried by said wheel, a series of five graduated ten-minute pins carried by said wheel, a series of nine graduated min u te-pins carried by said wheel, three hammer-levers and cooperating bells, said hammer-levers being arranged to be engaged respectively by the hour-pins, ten-minute pins, and minute-pins in succession, means for carrying said pins past their respective hammerlevers once each minute, means for changing the relative position of Vthe minute-pins and cooperating hammer-lever once each minute, means for changing the relative position of the ten-minute pins and cooperating hammerlever five times each hour, and means for changing the relative position of theV hourpins and cooperating ham mer-lever once each hour.

lO. Inastrikingclock,the combination with .a revoluble striking-wheel, of a driving-wheel 37 geared therewith, a series of twelve graduated hourpins carried by said strikingwheel, a series of live graduated ten-minute pins carried by said striking-wheel, a series of nine graduated minute-pins carried by said striking-wheel, three hammer-levers and cooperating bells, said hammer-levers being arranged to be engaged respectively by the hourpins, ten-minutepins, and minute-'pins in succession, a cam for shifting the first hammer-lever with relation to the minute-pins, a star-wheel secured to said cam, means carried by the driving-wheel 37 for engaging said star-wheel to advance said cam one step each minute, a second cam sleeved upon the arbor of the first cam and arranged to shift the position of the second ham mer-leverwith relation to the ten-minute pins, a star-wheel carried by said second cam, means carried by gear 37 `for advancing said second cam one step each ten. minutes, a third cam arranged to shift the third ham mer-lever with relationto the'hourpins, a star-Wheel secured thereto, and means carried by the second star-wheel for engaging the third star-wheel and advancing said-thirdstar-w'heel one step each hour.

ll. Inastriking-c1ock,the combination with a revoluble striking-wheel, of a series of twelve graduated hour-pinscarried by. said wheel, a series of five graduated ten-,minute pins carried by said wheel, aI series ,of nine `grad uated minute-pins carried bysaid wheel,

-ed tobe engaged by the hour-pins, means for swinging said first lever so as to var v the number of hour-pins engaging its hammer-lever, vaham'mer-lever pivoted :upon the second leverand adapted to be engaged bythe ten- IOO minute pins, means for swinging said second lever so as to vary the number of pins engaging its hammer-lever, a hammer-lever pivoted upon the third lever and adapted to be engaged by the minute-pins, means for swinging said third lever to vary the number of vpins engaging its hammer-lever, and means for carrying the three series of pins past their respective hammer-levers once each minute.

12. Inastrikingclock,thecombinationwith a revcluble striking -wheeh of a series of twelve graduated hour-pins carried by said wheel, a series of five graduated ten-minute pins carried by said wheel, a series of nine graduated minute-pins carried by said wheel, a level', a hammer-lever pivoted upon said lever and arranged to be engaged by the minute-pins, a cam arranged to engage the said lever, means for moving said cam so as to swing said lever through its range of movement once each ten minutes, a second lever, a hammer-lever carried by said second lever and arranged to be engaged by the ten-ininnte pins, a second cam, means for advancing said second cani step by step through the range of its movement once each hour, a third lever, a hainmer-lever carried thereby and arranged to be engaged by the hour-pins, a third cam engaging said third lever, means for advancing said third cam step by step once each hour so as to swing said third lever through its range of movement once in twelve hours, three bells arranged to cooperate with the hammer-levers, and means for rotating the striking-Wheel so as to carry the three series of pins past their respective hammerlevers once each minute.

13. In a striking-clock,the combination with a revoluble striking-wheel, of a series of twelve graduated hour-pins carried by said wheel, a series of ve graduated ten-ininute pins carried by said wheel, a series of nine graduated minute-pins carried by said wheel, three hammer-levers and cooperating bells, said hammer-levers being arranged to be engaged respectively by the hour-pins, tenminute pins, and minute-pins in succession, means for changing the relative position of the minute-pins and cooperating hammer-lever once each minute, means for changing the relative position of the ten-minute pins and cooperating hammer-lever five times each hour, means for changing the relative position ot the hour-pins and cooperating-harnmer-lever once each hour, and means for rotating said Wheel so as to carry the three series of pins past their respective hammerlevers once each minute.

14. In a stiiking-clocl ,tlie combination with a revoluble striking-Wheel, and means forrotating said wheel once each minute, of a series of twelve graduated hour-pins carried by said wheel, a series of tive graduated tenminute pins carried by said wheel, a series of nine graduated minute-pins carried by said wheel, three levers, three bells, a hammerlever pivotally mounted upon thelirst of said levers and adapted to be engaged b v the hourpins, means for swinging said first lever so as to vary the nnmberoi liour-pins engaging its hammer-lever, a hammer-lever pivoted upon the second lever and adapted to be engaged by the ten minute pins, means for swinging said second lever so as to vary the number of pins engaging its hammer-lever, a hammer-lever pivoted upon the third lever and adapted to be engaged by the minutepins, means for swinging said third lever to vary the number of pins engaging its hammer lever, and three pins carried by the striking-wheel in position to engage the three ham mer-levers substantially simultaneously in all positions of said levers.

15. In asti'iking-clock,tlie combination with a revoluble striking-wheel, and means for rotating said wheel once each minute, of a se'v ries of twelve graduated liour-pins carried by said wheel, a series ot' five graduated tenminute pins carried by said wheel, a series of nine graduated min nte-pins carried by said wheel, a lever, a hammer-lever pivoted upon said lever and arranged to be engaged by the minute-pins, a cam arranged to engage thc said lever, means .ior moving said cam so as to swing said lever through its range of movement once in each ten minutes, a sccond lever, a hammer -lever carried by said second lever and arranged to be engaged by the ten-minute pins, a second cam, means for advancing said second cam step by step through the range of its movement once each hour, a third lever, a hainmer-lever carried thereby and arranged to be engaged by the hour-pins, a third cam engaging said third lever, means for advancing said third cam step by step once each hour so as to swing said third lever through its range of movement once in twelve hours, three bells arranged to cooperate with the hammer-levers, and three pins carried by the striking-wheel in position to engage the three hammer-levers substantially simultaneously in all positions of said levers.

A16. In a striking-clock,the combination with a revoluble striking-wheel, and means for rotating said wheel once each minute, of a series of twelve graduated hour-pins carried by said wheel, a series of five graduated tenminute pins carried by said wheel, a series of nine graduated minute-pins carried by said wheel, three hammer-levers and cooperating bells, said hammer-levers being arranged to be engaged respectively by the hour-pins, ten-minute pins, and minute-pins in succession, means for changing the relative position of the minute-pins and cooperating haininer-lever once each minute, means for changing the relative position of the ten-minute pins and cooperating ham nier-lever five tim es each hour, means for changing the relative position oi the hour-pins and cooperating hammer-lever once each hour, and three pins IOO IIO

IZO

carried by the striking-wheel in position to engage the three hammer-levers substantially simultaneously in all positions of said levers.

17. In ast1iking-clock,the combination with a revoluble. striking-Wheel, of aV series of twelve graduated hour-pins carried by said Wheel, a series of live graduated ten-minute pins carried by said Wheel, a series of ninev graduated minute-pins carried by said wheel, three hammer-levers and cooperating bells, said hammer-levers being arranged to be engaged respectively by the hourpins, tenminute pins, and minute-pins in succession, means for carrying said pins past their respective hammer-levers once each minute,

means for changing the relative position ofv carried by said striking-Wheel, a series of nine graduated minute-pins carried vby said striking-Wheel, three hammer-levers and cooperating bells, said hammer-levers being arranged to be engaged respectively by the hourins ten-minute pins and minute-pins in 7 3 L succession, a cam for shifting one hammcrlever with relation to the minute-pins, a starwheel secured to said cam, means carried by the driving-Wheel 5 7`2t'or engaging said starwheel to advance said cam one step each minute, a second cam sleeved upon the arbor of the lirst cam and arranged to shift the position of the second hammer-lever With relation to the ten-minute pins,a star-Wheel carried by said second cam, means carried by gear 37 for advancing said second cam one step each ten minutes, a vthird cam arranged to shift the third hammer-lever Withrelation to the hourpins, a third star-Wheel secured thereto, means carried by the second starwheel for engaging the third star-Wheel and advancing said third star-wheel one step each hour, and three pins carried by the strikingwheel in position to engage the three hammer-levers substantially simultaneously in all positions of said levers.

HENRY M. HUNT. Witnesses:

ARTHUR M. Hoon,

BERTHA M. BALLARD.

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