US349879A - Electric clock - Google Patents

Description

(No Model.)

J. M. JAGEL.

ELECTRIC SUBWAY.

No. 349.797. Patented Sept. 28, 1886.

UNITED STATES PATENT OFFICE.

DOMINGO 'FORBES GAROIA, OF GUADALAJARA, MEXICO.

ELECTRIC CLOCK.

&PECIPICATION forming part 'of Letters Patent No. 3493379, dated September 28,1886;

Application filed February 13, 1886. Serial No. 191,SO7.

To aZZ whom it may concern:

Be it known that I, DOMINGO TORRES GAR- CIA, of Guadalajara, Mexico, have invented a new and Improved Glock, of which the following is a full, clear, and exact description.

This invention relates to certain new and useful improvements in clochs which are constructed with two toothed wheels on the same shaft, one of said wheels having one or more teeth more than the other, and both wheels being operated by the same pawl or pawls,whereby one wheel is moved faster than the other, and by means of scales, indicators, or hands on said wheels the relative positions of the same, and thus, also, the time, are indicated.

This invention also relates to certain new and useful improvements whereby said clock is operated by electricity.

Reference is to be had to the accompanying drawings,forming a part of this specification, :in which similar letters of reference indicate corresponding parts in all the figures.

Figure lis a face View of the mechanisn of my improved electric clock. Fig. 2 is a front view of the ratchet-wheel, showing a modified Construction of the pawls. Fig. 3 is an edge View of said wheel and levers. Fig. 4 is a face View of the wheel, the levers being in different positions. Figs. 5, 6, 7, and 8 are face views of the ratchet-wheels, showing different constructions of the parts for Operating the ratchet-wheels and different arrangements of the pawls. Fig. 9 is a face View of a modified Construction of the toothed wheels, three wheels being used in this case.

Two toothed wheels, A, are mounted on an arbor or spindle, A', one of said wheels having one or more teeth more than the other. A lever, B, is pivoted at B' to some suitable support, and to the lever B are pivoted, above and below its pivot B', the hook-pawls C' and C, each of which engages alternately both wheels A as the lever B swngs upon its pivot, as hereinafter explained. The upper end of the lever B is connected by a rod, B with the pendulum rod D, carrying an adj mm weight or bob, D', at its lower end. On the pendulum-rod an armature, D, is secured,and' is interposed between two electro-magnets, F' and F, which are connected by suitable wires with one pole of the battery F, and also with contact-pieces, preferably of Copper or plati- (Xo model.)

num, on the ends of the shanks of a U-shaped anchor, G, pivoted to swing on the fratne of the clock or other suitablcfixed support. The contact-pieces on the anchor G are interposed between and arranged to be struck by contactplates G* G near the free ends of the inverted anchor G also pivoted on the fraine of theclock or other suitable support, the plates G* G being connected by wircs with the other pole of the battcry. The bodies of the anchors Gand G are preferably of insulating material, and in the shanks of the anclor G are held adjustable screws G and G which are arranged to be struck alternately by the Swinging pendulum rod D. lVith this Construction, When the pendulurn starts to swing to the left, it strikes the left-hand screw G' and throws the left-hand contact-piece on the anchor G against the corresponding contactplate, G*, on the anchor G closing the circuit through the left-hand magnet F', said contact-points and their connecting-wires. The right-hand circuit being open, the left-hand magnet F' attracts the armature D giving the pendulun a slight impulse to the left, accelerating its motion slightly, until the contact-piece on the anchor G slides off the plate G* on the anchor G both anchors being swung to the left,and upon the non-conductiug tip of the same, whereby the left-hand circuit is broken and the pendulum allowed to swing by its gravity to the right. It then strikes the right-hand screw G' and closes the righthand circuit, giving the pendulum an impulse in that direction, and the circuit is opened and the pcndulun released, as before. The motion of the pendulun is thus maintained constant, and the lever B, connected therewith on its pivot,causes the pawls G and C' to engage alternately with the teeth of both wheels A, whereby the wheels are revolved. The pawl may be arranged in a different manner, if desired. For instance,as shown in Figs. 2, 3, and 4, two levers, H, are mounted to Swing on the pivot A of the wheels A, and on the ends of the levers H the dogs H' and H are pivoted and engage with the teeth of both wheels A. The upper dog, H, remains in engagement with the teeth of both wheels from its gravity, and the lower dog, TF, is held in cngagement with both wheels by a counterweight on its opposite end. The level-s Hare IOO interposed between pins h h, projecting from the pendulum-rod above and below the pivot A',so that the pendulum, being pivoted above the wheels, as it swings-a g., to the right, as shown in Fig. 4:' both levers H are carried also to the right, and the upper dog, H', engaging the teeth of both wheels, said wheels are revolved in the direction of the arrow a',

the lower dog, H, sliding over the teeth of the wheels. When the pendulum swings to the left, both levers H are swung to the left, and the lower dog, H now engaging the teeth of both wheels, while the upper dog slides over them, the wheels are still revolvedin the direction of the arrow a'.

In the Construction shown in Fig. 5 the dogs H" and H are pivoted on the ends of curved arms I on the ends of a cross-bar, J sliding across the face of the wheel A in suitable guides, J' J', Secured to the fram'e of the clock or other support. To the bar J are attached two pins, J?, between which the pendulum-rod is received, so that when the pendulum-rod swings to the right the upper dog, H engages and revolves the wheels, and when it swings to the left the lower dog, H engages the wheels, which are thus constantly revolved in the same direction. The cross-bar J is slotted to receive the pivot A' of the wheels in its transverse motion, and abovethe bar J is pivoted to the frame of the clock or other suitable support a Ushaped anchor, K, contactpieces on the ends of which are connected to wires with a battery, and are arranged to be struck alternately by the pins J on the sliding bar J, also connected with the battery. These two circuits, in which the magnets acting on the pendulum may be placed, are thus alternately opened and closed, whereby the motion of the pendulum is maintained, as before.

In Fig. 6 the sliding bar J is provided with a central frame, J on which the dogs H' and H are pivoted, the rest of the Construction being substan'tially as in Fig. 5.

In Fig. 7 the pawls or dogs H' and H are pivoted on a toggle-frame, L, pivoted at one end to the pivot A' of the wheels, and connected at the other end with a pivot or pin, L', reciprocated by the motion of the pendulum by any suitable connection,'and guided by the bars L An upwardly-projecting arm, M, is attached to the sliding pivot L', is' connected to the battery by a wire, and oscillates between the contact ends of the anchor K, pivoted to the frameor other support, as before, whereby the circuits of the two magnets are alternately opened and closed, as before described.

In Fig. 8 the dogs are pivoted to a pivoted lever, N, provided with two pins, O, between which the pendulum-rod passes, so as to Swing said lever to and fro in its oscillations. The pawls or dogs thus alternately act to revolve both wheels, and the pins O being connected with a battery, they are brought alternately in contact With the contact ends of the pivoted anchor K, also connected with the battery, so that the magnet-circuits are thus alternately opened and closed.

In all of the above-described cases the pawls act alternately, and each pawl always, acts upon both wheels-that is, when one wheel is revolved' the other is revolved with it, and

as one wheelhas less teeth than the other it is evident that when the larger wheel has completed one revolution the smaller wheel will have made one complete revolution, and a few teeth more, and then the relative positions of the wheels will clearly indicate the time; The teeth of the wheels are of such v numbers and in such proportion that the relthird wheel, R, having a flange, R', on part of 5 the rim of which teeth R are formed, which engage with the pawl S. Adjacent to 'the pawl S a pawl, T, is pivoted, which slides on the flat part of the outer surface of the flange R', adjacent to the circular row of teeth. Said flat portion of the flange is provided with an opening,` V, through which the prong of the pawl T can drop to engage the teeth of the two wheels A.

The operation of this compound wheel is as follows: The wheel R makes a revolution, and the pawl T, which swings or oscillates with the *pawl S,` in same. manner as hereinbefore described, slides on the outer surface of the flange R' and cannot act. By the time, however, the wheel R has completed one revolution the prong of the pawl T will be directly over the opening U, it then drops into the slot and engages the teeth of the two inner wheels, A, whereby they are revolved; but as soon as the wheels A have been revolved one tooth by the pawl T the edge of the slot or opening U again strikes the prong of the pawl T, which is thus raised upon the outer surface of the flange again and slides on said outer surface until the wheel R has. again made a revolution, and so on.

I lay no claim herein to the means for indicating time by the relative motions of the differential gear-wheels, as such is fully covered in my application No. 191,806 of same date Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. A. clock provided with two ratchetwheels, of which, one has a few more teeth than the other, and with two pawls operated by the IOG IIO

actuating mechanism of the clock, and eachenv ratchet-wheels, substantially as shown and described.

2. In a clock, the combination, with two wheels, of which one has one or more teeth more than the other, of two pawls each engaging with the teeth of both wheels, and devices for Operating said pawls from the pendulum to cause the pawls to operate alte'nately, substantialiy as herein shown and described.

3. In a clock, the combination, with two wheels nounted on the same shaft,and one hav ing one or more teeth more than the other, of two pawls, each engaging with the teeth ofboth wheels, the frame or lever to which the pawls are pivoted, and a pendulum actuating said frame or level', substantially as herein shown and described.

DOMINGO TORRES GARCIA.

XVtnesses:

N ICHOLEIS PUGA, ANTONIO ARRONIZ.

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