US330896A - Andbeas gulbbandsen hoyde - Google Patents

Description

(No Mode l.)

A. G, HOVDE.

GLOGK STRIKING MECHANISM.

No. 330,896. Patented Nov. 24, 1885.

N. PETERS, Photo-Lithngrapher, Washingion, D. c

UNITED STATES PATENT OFFICE.

ANDREAS GULBRANDSEN HOVDE, OF HONEFOS, NORWAY.

CLOCK STRIKING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 330,896, dated November 24,- 1885.

Applicatlon filed August 11, 1885. Serial No. 174,149.

To all whom it may concern.-

Be it known that I, ANDREAS GULBRANDSEN HOVDE, a subject of the King of Norway, and residing in the town of Honefos, Norway, have invented certain new and useful Improvements in Striking-Trains for Clocks; and I do hereby declare the following to be a full,clear,and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in striking-trains for clocks.

The object is to provide striking mechanism of simple construction in which the rolling friction shall be materially lessened.

With this end in view my invention consists in certain features of construction and combinations of parts, as will be hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a View of a portion of clock-work embodying my invention. Fig. 2is a detached view show ing the position of the escapement just before the clock is ready to strike, and Fig. 3 is a similar view showing one of its positions while striking.

The striking-train represented inthe drawings consists of a movement mechanism and a regulating mechanism. The movement mechanism comprises the pinion or escapement-disk s, provided with the tooth s and recess 8 the disengagingarm a, and the hammer b,balanced by a counter-weight, b, all these parts being rigidly secured on the hammer-axle a. The hammer is continuously drawn toward thebell by means of a spring, 00, by a weight acting independently, or by the Weight of the hammer itself.

The regulating mechanism consists of the step-wheel m, secured on the sleeve of the hour-hand, or otherwise adapted to make one revolution every twelve hours, the two-armed lever f f adapted to stop the striking-movement at the proper time, and the toothed escapement-wheel 1', having a series of studs or stops, I, II, &c., on its face; or a separate disk might be employed to carry the stops and adapted to rotate simultaneously with the escapement-wheel r. The escapement-wheel r is constantly under tension tending to force it to the left by the employment of a spring or weight, g attached to its axle.

(No model.)

A represents the center arbor, to which the minute-hand is attached, and which is adapted to make one revolution every hour, as is usual. The step-wheel m, above referred to, is sleeved on the arbor A, an intermediate train of gear, 19 p, meshing with the gear (1 q, located on the arbor and hour-hand sleeve, respectively, transmit the power of the clock actuating spring or weight, as the case may be, to the center arbor and hour-sleeve loosely mounted thereon.

7c is the bell.

The free end of the disengaging-arm a rests in contact with the under face of a disk, Z, secured on the center arbor, and hence making one revolution every hour. The disk Z has a notch or groove, Z, formed in its face, into which the end of the arm a falls each hour, at which time the arm is free to swing away from the disk Z, the hammer-axle thereby left free to rock, and the tooth s on the escapement-disk s free to disengage the opposing tooth on the escapement-wheel a. The branch f of the lever ff is adapted to rest on the face of the wheel m, and as it follows the suc cessive steps formed thereon it elevates or depresses the arm f just enough to cause it to engage the proper stop on the face of the wheel r.

The position represented in Fig. 1 is that which is assumed as the clock is about to strike two. As the end of the arm a enters the groove 1, the tooth a" on the wheel 7, pressing against the nose or tooth s on the disk s, rotates the hammer-axle toward the right, and as the tooth a" slips past the tooth s the tension of the spring at on the hammer-axle forces the hammer in contact with the bell. As the hammer rebounds the tooth r on the wheel engages the tooth s, the hammer is again thrown back, and as soon as the tooth 1' passes the tooth s a second stroke of the hammer takes place. The end of the arm f, or a leaf or tooth attached to the end, now engages the stop marked II. The wheel 1' is thereby held in check, and the striking ceases. As the shoulder at the back of the groove Z engages the arm a,it presses downwardly on the arm, thereby rotating the hammer-axle slightly toward the left, and, through the tooth s in engagement with the tooth r on the wheel 7, 1'0- tates the wheel 1' slightly toward the right,

and releases the, end of the arm f from the stop or pin II. At the same time, the wheel I m having rotated ashort distance to the right,

the end of the arm f has dropped onto the next step, and has carried with it the end of the armf to a point below the stop II, and at a proper elevation to intercept the stop III. The distance from the stop II to the stop III, measured in a direction opposite to that in which the wheel r revolves, corresponds to three teeth on the wheel 0*, and hence as the disk Zpresents its groove Z to the end of the arm a at the end of the next hour the clock will strike three. In the same manner, the distances from stop III to IV, from stop IV to stop V, and from stop V to stop VI correspond, respectively, to four, five, and six teeth on the wheel 1", and the clock will therefore strike four, five, and six. At the time when the clock strikes six the arm f rests upon the lowest step on the wheelviz., that step which is nearest its axle, and as the wheel continues to revolve, the arm f, and hence the arm f, will be raised one step. The wheel 1 has thirteen teeth; hence the distance from the stop VI to the stop V, measured in the same direction as before, will correspond to seven teeth, and the clock will next strike seven. The distances from V to IV, from IV to III, from III to II, from II to I, and from I to XII, measured in the same direction as before, correspond, respectively, to eight, nine, ten, eleven and twelve teeth on the wheel 1*, and the clock will therefore strike, in order, eight, nine, ten, eleven, and twelve.

WVhen the escapement-wheel is provided with thirteen teetlnas above described, it will be required to make six revolutions every twelve hours, since there are seventy-eight strokes required to strike the twelve hours, and one tooth corresponds to one stroke.

By increasing the number of teeth to twenty-six or thirty-nine, the number of revolutions required of the wheel 9* during the twelve hours might be decreased to three or two, respectively. This change would, however, only necessitate a slight change in the arrangement of the stops on the escapement-wheel and the steps on the heart-wheel, and its operation would be quite similar to that already described.

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

1. In a striking-train for clocks, the combination,with the spring-actuated hammer-axle, the hammer, the escapement disk and the disengagingarm secured thereon, and the escapement wheel actuated by a spring or weight, of a notched or grooved disk secured on the center arbor and adapted to engage the disengaging-arm, and the step-faced wheel secured on the hour-hand sleeve and adapted to regulate the stop-lever, substantially as set forth.

2. In a striking-train for clocks, a singletoothed escapement-disk secured on a springactuated hammer-axle, and adapted to be operated by a spring or weight actuated escapement-wheel, and to be held in check by an arm secured on the hammer-axle, in connection with a disk on the center arbor, substantially as set forth.

3. In a striking-train for clocks, the combination, with an actuated and hammer-actuating escapement-wheel provided with less than twelve stops, of a step-faced wheel adapted to make one revolution every twelve hours, and a two-armed stoplever adapted to be actuated by the wheel and to stop the escapementwheel at the proper intervals to strike the twelve hours, substantially as set forth.

4:. In a striking-train for clocks, the combi-' nation, with the movement mechanism, consisting, essentially,of the spring-actuated hammer-axle, the balanced hammer, the escapement-disk, and the disengaging-arm, of the regulating and actuating mechanism, consisting, essentially, of the power-actuated escape ment-wheel with its stops, the disk for looking and releasing the diseugagingarm, the wheel, and the two-armed lever, arranged substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

ANDREAS GULBRANDSEN llOVllE.

IVitnesses BERTRAM DAHL, O. LEHoNHnYDnR.

Images