US337585A - Chaeles henry jacot - Google Patents

Description

(No Model.)

0. H. J AGOT.

AUTOMATIC SAFETY CHECK FOR MUSICAL BOXES.

No. 337,585., Patented Mar. 9, 1886.

WITNESSES ATTORNEYS.

; UNITED STATES P TENT EricE.

- CHARLES HENRYJAGOT, or HOBOKEN, NEW JERSEY.

AUTOMATIC SAFETY-CHECK F'OR MUSICAL BOXES. I

SPECIFICATION forming part of Letters Patent No. 337,585, dated March 9, 1886.

Application filed September 12, 1885. Serial No. 176,913. (No model.)

To aZZ whom it may concern.-

Be it known that I, CHARLES HENRY J AC'OT, of Hoboken, Hudson county, and State ofNew Jersey, have invented a new and useful Improvement in Automatic SafetyOhecks for Music-Boxes, of which the following is a full, clear, and exact description.

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 1 is aplan view of apart of a musicbox to which my improvement has been applied, part being broken away. Fig. 2 is an end elevation of the same, part being broken away. Fig. 3 is an end elevation of a part of the same, showing a modification.

The object of this invention is to provide automatic safety-checks for music-boxes, constructed in such a manner as to stop and hold the cylinders should they escape from the control of the escapements by accident, or when the said escapements are being adjusted or disconnected, to prevent the cylinders from being revolved so rapidly by the spring as to expose the cylinder pins and the teeth of the combs to the danger of being broken or otherwise injured.

The invention consists in the combination, with the cylinder-shaft of a music-box, of a friction-wheel and a balanced friction-pawl, whereby the said shaft will be stopped and held should its speed be unduly increased.

A represents the bed-plate. B is the drum, containing the driving-spring 0, attached to the said drum and to the shaft D, which revolves in bearings attached to the bed-plate A, and which is turned to wind up the said spring by a crank, E, working loose upon the shaft D, and connected therewith by a pawl, F, pivoted to the said crank and engaging with a ratchet-wheel, G, attached to the said shaft, so that the said crank inits forward movement will carry the said shaft with it, but can be turned back without turning the shaft.

To the drum B is attached a large gearwheel, H, the teeth of which mesh into the teeth of the pinion-wheel I, attached to the shaft J. The shaft J revolves in bearings attached to the bedplate A, and upon it is placed the cylinder K, to which are attached the pins L, that operate the teeth of the comb M,attached to the bed-plate A. To the other end of the shaft J is attached a large gearwheel, N, which is connected by a train of gear-wheels, O, with and drives the escapementfans P, thatcontrol the speed of the mechanism.

The shaft J is made to carry the cylinderK with it in its revolution by a pin, Q, attached to the gear-wheel N, and which enters a perforation in the end of the said cylinder.

'To the inner side of the gear-wheel N is pivoted a small wheel, B, having upon its side as many inclines or shoulders as the instrument is constructed to play airs, and against which rests an inclined projection, S, attached to the end of the cylinder K, so that the said cylinder can be adjusted to change from one air to another by turning the said wheel.

The mechanism for turningthe wheel R is not shown in the drawings,as there is nothing new in its construction or operation.

The cylinder K is held forward, holding the projection S against an incline of the wheelR by a spiral spring,T, placed upon the shaft J, and interposed between the end of the cylinder K and the pinion-wheel I.

In the outer side of the gear-wheel N, near its rim, is formed an annular groove, U, having a recess, V, in the shoulder at its inner side. To the bearings of the fan-driving gearwheels 0, or other suitable support, is pivoted the three-armed lever WV,one arm of which is provided with a laterally-projecting pin, X, which enters the groove U, and at each revolution of the cylinder K, and consequently at the completion of each air, drops into the re cess V and stops the movement of the said cylinder. The second arm of the leverWprojects into such a position that the slight rise of the said arm caused by the dropping of the pin X into the recess V will cause the said arm to engage with a radial pin, Y, attached to the shaft of the fans P, and thus stop the said fans.

Z is a spring attached to the fan-shaft bearing or other supp0rt,and which presses against an arm of the lever WV in such a direction as to cause the pin X to drop into the recess V, when the revolution of the gear-wheel N brings the said recess opposite the said pin. I

The third arm of the lever W projects downward, and is bent outward into such a posiin the construction or operation of the mechanism.

To the outer side of the gear-wheel N, or to the cylindershaft J, is attached or upon it is formed a friction-wheel, b, to the outer side of which, near its rim, is attached a circle of pins, 0. To the bearing for the shaft J or other suitable support is journaled a frictionpawl, d, the face of which is made with an eccentric curve, as shown in Fig. 2, or incline, as shown in Fig. 3, so as whenthrown forward to engage with the face of the friction-wheel b, and thus stop and hold the cylinder K.

To the side of the friction-pawl dis attached or upon it is formed an arm, 6, which projects along the side of the friction-wheel b into such a position as to be struck by the successive pins 0, so as to swing the friction-pawl d forward, the said arm being made of such alength that the said pins 0 will release it before the face of the pawl (1 comes in contact with the face of the wheel I).

The rear end of the pawl d is made sufficiently heavy to raise the forward end into its former position when the arm 6 escapes from each pin a; or the friction-pawl d can be supported by a spring, f, to which it is attached, and which is secured to a projection, 9, formed upon or attached to the bed-plate A, the said spring yielding when the pawl dis lowered by the engagement of a pin 0 with the arm e,

and again raising the said pawl whenthe said arm is released from the said pin.

The friction-pawl d can be provided with a handle, h, for convenience in withdrawing it from the friction-wheel b, when desired.

With this construction, when the, mechanism is running at its ordinary speed, each pin a strikes the arm 6 of the pawl 01, and swings the said pawl forward, but releases it before its face comes in contact with the face of the friction-wheel b, when the said pawl is instantly returned to its former position; but should the cylinder escape from the control of the fan-escapement the rapid movement of the said cylinder will give such a momentum to the pawl d in its forward movement as to bring the face of the said pawl into contact with the face of the friction-wheel 1) before the said pawl can return to its former position, and the cylinder will be stopped and held until the said pawl is withdrawn from the said friction-wheel.

Having thus fully described my invention, I claim as newand desire to secure by Letters Patentlhe combination, with the cylinder-shaft of a music-box, of a friction-wheel, b, having a.

circle of pins, 0, and a balanced friction-pawl, at, having arm e, substantially as herein shown and described, whereby the said shaft will be stopped and held should its speed be unduly increased, as set forth.

CHARLES HENRY JAOOT'.

\Vitnesses:

JAMES T. GRAHAM, EDGAR TATE.

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