US854518A - Clock-movement. - Google Patents

Description

PATENTED MAY 21, 1907.

No. 854,518. G. T. MCGLINTOUK. CLOCK MOVEMENT. APPLICATION FILED JUNE 12,1906.

THE nwkms PETERS ca., WASHINGTON, u. c.

UNITED STATES PATENT OFFICE.

CLOCK-MOVEMENT.

Specification of Letters Patent.

Patented May 21, 1907.

A li tio fil d June 12.1906. Serial No. 321,339.

To all whom it may concern:

Be it known that I, CnARLns TYLER Mc- CL1N'rocK, a citizen of the United States of America, residing at Oil City, in the county of Venango and State of Pennsylvania, have invented certain new and useful Improvements in Clock-Movements, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to clock movements, and more particularly to an improved escapement device for clock movements.

The primary object of the present invention is to provide an escapement dev ce which will impart a positive vibration to a pendulum by a direct crank movement.

A further object of the invention is to provide an escapement of novel construction which will not be affected by ordinary shocks or jars, or by slight variations in the position of the clock casing.

The most common form of escapement known as the anchor escapement employs a vibrating anchor provided with pallets to alternately engage the teeth of the escapement wheel. This, like various other wellknown escapement devices requires that the clock should rest upon an absolutely level support, and moreover, the toothed wheel, and pallets of the vibrating element of the escapement are sensitive to wear and friction.

It is the aim of the present invention to entirely avoid the employment of a toothed escapement wheel and a vibrating element having pallets to engage said wheel, and to substitute a positively reciprocating device acted upon by a positively-driven crank-pin.

The invention consists of an escapement device comprising a lever fixed to a pendulum shaft and having an elongated slot formed therein, and a crank-pin extending into said slot, and carried by a revoluble arbor whereby a positive vibration is imparted to said lever at each revolution of said arbor.

The specific construction of the improvement will be fully described hereinafter in connection with the accompanying drawing which forms a part of this specification, and its features of novelty will be defined in the appended claims.

In the drawing, Figure 1 is a rear elevation. of a clock movement with my improved escapement in position thereon, Fig. 2 is a side elevation of the same, Fig. 3 is a detail view of the escapement device removed from the clock movement, and Fig. 4 is a modification.

The reference numeral 1 designates the supporting frame of a clock movement, and 2 the winding drum mounted within said frame. The drawing represents a movement adapted to be actuated by a cord and weight, but it will be understood that the improved escapement device constituting the invention, may be applied to any form of movement I have shown a clock train for revolving the escapement arbor 3 from the drum, said train comprising a gear wheel 4 on the drum shaft, the usual arbors and intermeshing pinions and gearing on said arbors for transmitting rotary motion to the arbor 3. It Will be understood that the clock train, and the relative arrangement of the winding mechanism and the clock train constitute no part of the invention, and such parts are intended to be shown in the drawing only conventionally, and for the purpose of making clear the operation of the improved escapement device.

Above the arbor 3 is the pendulum shalt 5 suitably supported in bearings of the frame, and carrying the pendulum guide 6 embracing the pendulum 7, the latter provided with the usual bob 8. The pendulum 7 is suspended from a bracket 9 secured to the clock frame.

Mounted upon the front end of the arbor 3 is a disk 10 from the front face of which pro jects a crank-pin 11, said pin projecting into an elongated slot 12 formed in the escapement lever 13, and disposed longitudinally of said lover. The upper end. of the lever 13 is formed with an eye 14 through which the pendulum shaft extends. The lever being thus fixed upon the shaft, the required oscillating movement of the shaft 5 and the consequent vibration of the pendulum is effected by the movement of the crank-pin 11 within the slot 12 of the escapement lever.

From the illustration in Fig. 3 it will be apparent that at each complete revolution of the disk 10 the escapement lever is given two impulses, in opposite directions, as indicated by full and dotted lines. These move ments or impulses of the lever are positive and therefore not affected by any slight variation of the clock case and movement from a level position. thus gives a positive oscillating movement The construction I I O to the pendulum shaft as distinguished from plication to a clock movement; nor to the specific form of crank device illustrated in the drawings. As a crank arm might be employed in lieu of the disk shown, I therefore, reserve the right to make all such modifications and variations in the details of construction and arrangement of parts as may be resorted to without departing from the scope of the invention as set forth in the claims.

What I claim and. desire to secure by Letters Patent, is

1. An escapement device, comprising an oscillating shaft, a vibrating member carried. thereby, an escapement lever fixed on said shaft, and formed with a longitudinally disposed slot, a rotary shaft, a disk on said. rotary shaft, and a crank pin carried thereon and extending into said slot.

2. An escapement device comprising an oscillating shaft, a pendulum operated there by, an escapement lever fixed upon said shaft, and formed with. an elongated longitudinally disposed slot, a rotary shaft arranged parallel with said oscillating shaft and a crank disk fixed to said shaft, and provided with a projecting pin extending into the slot of said lever.

23. An escapement device, comprising an oscillating shaft, a vibrating member carried. thereby, an escapement lever fixed upon said shaft, and formed with a longitudinally disposed slot, a rotary shaft, a disk on said rotary shaft, a crank-pin carried on said disk extending into said slot, and an anti-frictimr roller on said pin.

4. The combination with the clock train and escapement arbor of a clock movement, of an escapement device comprising an oscillating shaft, a pendulum operated thereby, an escapement lever fixed on said shaft and formed with a longitudinally disposed slot, a disk on said arbor and a crank-pin on said disk, and extending into said slot.

5. The combination with a clock train, of winding mechanism therefor, an escapement arbor driven by said train, a disk mounted on said arbor, a crank-pin projecting from said. disk, a shaft above said arbor, an escapement lever fixed upon said shaft, and formed with a longitudinally disposed slot to receive said pin, and a pendulum and bob suspended above said shaft.

In testimony whereof I allix my signature in the presence of two witnesses.

CHARLES TYLER. rlleCl/lN'lObh.

Witnesses E. R. SHEPARD. CHAS. H. IJAY, Jn.

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