US433225A - Baillot - Google Patents

Description

( L) 4Sheets-Sheet 1. C. BARBEZAT-BAILLOT REPEATING WATCH.

No. 433,225. I Patented July 29. 1890.

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0. BARBEZAT-BAILLOT RBPEATING WATCH.

No. 433,225. Patented July 29, 1890.

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G. BARBEZAT-BAILLOT REPBATING WATCH.

Patented July 29, 1890.

(No Model.) 4 Sheets-Sheet 4.

G. BARBEZAT-BAILLOT REPEATING WATCH.

No. 433,225. Patented July 29, 1890.

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CHARLES BARBEZAT-BAILLOT, OF LOCLE, SWVITZERLAND.

REPEATlNGt-WATCH.

SPECIFICATION forming part of Letters Patent No. 433,225, dated July 29, 1890.

. Application filed May 9, 1889.- Serial No.310,114. (No model.) Patented in Switzerland January 8, 1889, N0. 334.

To all whom it may concern:

Be it known that I, CHARLES BARBEZAT- BAILLOT, a citizen of Switzerland, residing at Locle, in Switzerland, have invented a new and useful Improvement in Repeatingatches, (patented to me in Switzerland January 8, 1889, No. 334,) of which the following is a specification.

Myinventionrelates to the mechanism made use of with the striking devices in a repeating-watch, whereby the hours are first struck and then the quarter-hours and then the five minutes are indicated; and I use a centrifugal regulator that is noiseless to regulate the speed of the striking mechanism.

In the accompanying drawings, Figure 1 is a plan view, on an enlarged scale, of the re peating mechanism as it is seen when the dial has been removed. In this figure the mechanism is at rest. Fig. 2 is a plan view, and Fig. 3 a cross-section, of the regulator on twice the scale of Fig. 1. Figs. 4 and 5 are detached views of parts of the mechanism; and Fig. 6 is a diagrammatic plan view of the gearing for operating the centrifugal regulator and the striking mechanism, the plates and bridges not being shown.

A is the axis, to which is affixed one end of the mainspring of the repeating-Work. Said spring is placed in an ordinary barrel in a recess of the plate below the spring barrel bridge- The action of the mainspring is transmitted to a toothed segment 13, to partially rotate upon the axis A, there being a ratchet-wheel C fixed to the axis A and a click D on the toothed segment 13. This click allows the tension of the spring to be adjusted as desired. The segment Bhas an arm 1) projecting through the watch-case, so as to be moved by hand against the action of the spring when the striking or soundlngmechanism is brought into action. The said arm I) may be replacedby a rack E, gearing with a toothed part of the segment B, in order to have the latter acted upon by means of a pusher, as shown by dotted lines in Fig. 1.

The teeth of the segment 13 engage with those of a rack F, which turns freely upon an axis G, which axis also carries the third rack H, upon which is a double-armed spring h, that connects the two racks H and F with one another, but in such a manner that the rack F is free to be moved under the action of the segment B when the arm I) is moved; but the rack H can remain stationary as the spring h is bent. The rack H at one end has a projection If, adapted to engage the hour-snail 'v, as hereinafter described. The unlocking-lever I is also pivoted on the axis G and acted on in one direction by the spring 71, and there is a pin f on the rack-lever F, that acts on the unlocking-lever I to move the same as the striking mechanism is started.

The rack II acts upon a pinion J, which is fixed upon an axis K, which axis also carries a segment L, having twelve click-teeth which act upon the tooth of the hour-strikerN, and there is also a pin Z on the segment L to act upon the toothed segment M, the teeth of which gear into teeth on the lever O to move the lever 0 against the action of' a spring 0.

The toothed lever O is pivoted at W and provided with click-teeth m, that act upon the quarter-strikers P, and with other clickteeth a, that act upon the minutes-strikers Q. The hour-striker N is on the same arbor as the quarter-striker P, but beneath it and on the same plane as the segment L. A toothed rack S is also pivoted at W, and acts to determine the number of teeth that act upon the five-minute striker Q. A click 0, pivoted upon the toothed lever O, is provided with a spring, (shown by dotted lines in Fig. 4,) which moves the engaging end of the click to the teeth of the rack S. The other end of the click 0 is beveled and comes against the pillar X to lift the engaging end away from the teeth of the rack S when the reverse end of the toothed lever O swings toward the snail T. The click 0 engages the teeth of the rack S at a place which is determined by the positions of the reverse end of such rack S and the snail U.

The lever B, having a spring 7', acts as a locking device for holding the striking mechanism until the above -mentioned lever I causes the unlocking of said mechanism.

When the arm bis acted upon to bring into action the sounding mechanism, the toothed segments L and toothed lever 0 have a tendency to move in opposite directions to the arrows upon the drawings, Fig. l; but they are stopped by the teeth of the strikers P and Q, the latter not being free to oscillate because the pins 19 and qrest against the locking-lever B when the latter is in the position shown in the drawings-that is to say, when the tooth R bears upon the extremity I of the lever I. hen the pin f of the rack-lever F strikes against the lever I, the latter is moved so as to allow the tooth R to escape from I of the lever I. The locking-lever R is then easily repulsed by the pins 2 and q, and then there is no obstacle either to the movements of the lever O and toothed rack S toward the quarters and minutes snails T and U or to the backward motion of the toothed segment L, the extent of which is determined by the hour-snailV through the intervention of the pinion J, rack H, and the rack end 25, which parts move back simultaneously with the segment L. As soon as the arm I) has been fully moved and abandoned to itself, all the parts are moved by the action of the mainspring in the direction indicated by the arrows in the drawings until they reach a position of rest, such as that shown in the drawings, and in so doing the time is indicated by the number of strokes by the hour, quarter-hour, and five-minute strikers. The operation of the striking mechanism in this movement is as follows, according to the relative position of the time mechanism, which determines the hour, quarter, and minutes to be struck: The teeth of the segment L engage the toot-h of the striker N, (see Fig. 6,) and the striker N has a tooth acting upon the pin 11 upon the hammer N, which hammer swings upon the same arbor 12 as the strikers P and N. This movement actuates the striker N and the hammer N, and as the teeth of thesegment L pass they each actuate the tooth of the striker N to draw back the hammer N against the spring 8, which spring, as the tooth of the striker jumps from tooth to tooth of the segment L, throws the hammer N with force against one are bar of the circular resonator L to sound the hours. The spring 10 stops the hammer from going too far and gives it the necessary return movement. These springs 8 and 10 hold the hammer in a state of rest when the repeating mechanism is not in operation. In the progressive movement of the parts the first teeth of the toothed lever O engage the tooth of the quarter-striker P, which in turn moves the pin 11 and draws back the 11ammer N, and the springs-8 and 10 operate, as heretofore described, to cause the hammerN' to strike the quarter-hours. In the further progressive movement of the parts the smaller teeth of the toothed lever O engage the tooth of the minute'striker Q, which striker in turn engages the pin 13 of the hammer Q to draw back said hammer, and as the tooth of the minute-strikerQ jumps from tooth to tooth of the lever O as said lever moves past, the spring 14 throws the hammer Q with force against one are bar of the resonator L to sound the minutes, and the spring 15 checks the movement of said hammer and imparts to it the necessary return movement. resonator L is composed of two circular arc bars of different lengths, producing diiferent tones when struck, respectively, by the 11ammers N and Q.

On the unlocking-lever I, I aftix an arm Z,

the end of which is hooked, and when the mechanism is at rest the pin z of the rack S prevents the end of the rack S moving toward its snail until the unlocking-lever I has been moved; but as soon as the pin f moves the unlocking-lever I and its arm Z the pin 2 and rack S are released and moved by the spring 3, and the tooth R is released from the end I, and the locking-lever R is free to be moved,

and the pins 19 q are also simultaneously released.

In place of the escapement usually employed in repeating mechanisms, which produces a disagreeable noise, I provide a centrifugal regulator, (shown in Figs. 2 and 3,)

and locate the same over the time-movement that is to say, 011 the opposite side of the plan view shown in Fig. 1. The mechanism for operating this centrifugal regulator is as follows, (see Fig. 6:) Beneath the toothed seg- 5 ment L is a click or ratchet wheel 20 and a toothed wheel 21, pinned together and loosely surrounding the axis or arbor K of the toothed segment L. A pawl 22 upon the under side of the toothed segment L engages the teeth of I00 the ratchet-wheel 20, and a spring 23 keeps the pawl in place. The movement of the toothed segment in one direction operates the wheels 20 and 21, and in the other direction the pawl runs over the ratchet-wheel 20. The IO 5 over a recess of the bridge B, in which the n 5 regulator is placed. The latter is composed of four arms D D D D affixed to the axis A. The arms D and D carry two levers E, with pivots e and terminal weights E The arms D and D are double, like two forks,

into which are received the levers E. There are two springs f, the ends of which are affixed, respectively, to the arms D and to the arms D and their other ends press upon the levers E so as to draw the weights E toward :2 5

the axis A. The heels of the levers are formed so as to freely rotate in the recess of the bridge B as long as the levers E remain in the position shown by full lines in the drawings; but when the centrifugal force throws the levers outward-for instance, into the position shown by dotted lines in the drawinsthe heels 6 of the arms E bear upon the inner face of the recess B, so as to pro The 70 The I r o dnce a friction, which increases in proportion of the increasing speed of the axis K.. Said friction abates the velocity of the said axis K, and when the speed of the latter is again normal the springs f throw the levers E into their normal positions, in which their heels 6 do not rub against the inner face of B.

The described regulator works without producing any noise Whatever and With great precision.

I claim as my invention- 1. The combinatiomwith the ratchet-wheel 0, click D, and toothed segment B, of the unlocking-lever I, rack 11, pivoted at G, and the spring it upon the rack H and acting between the rack-lever F and the rack 11, the repeating mechanism made ready for action by the rack H, and the rocking lever B for holding the repeating mechanism, and the pin f upon the rack-lever F, for bringing into action the repeating mechanism, substantially as set forth.

2. The combination, with the snails T U V and the striking mechanism, of the toothed lever O and toothed rack S, pivoted at V, 25 the lever 0 having teeth to act on the striking mechanism, the pawl o'upon the lever O, engaging the teeth on the rack S, the toothed segment M, engaging the teethon the toothed lever O, the pinion J, and rack H, for giving 30 motion to the respective parts, and the unlocking-lever I and locking-lever R, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of 3 5 two subscribing Witnesses;

CHARLES BARBEZAT-BAILLOT.

Witnesses:

HENRI GRANDJEAN, P. A. PERRENOUD.

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