US684819A - Operating mechanism for valves. - Google Patents

Description

N0. 684.8l9. Patented Oct. 22, I90l.

J. C. HENDERSON OPERATING MECHANISM FOR VALVES.

(Application filed June 18, 1899.)

n6 mum.)

WITNESSES:

ATTORNEY m: uonms PEIERS co. vnoraumon WASHlNGYON. u. c.

JOHN C. HENDERSON,

much...

OF NEW YORK, N. Y.

OPERATING MECHANISM FOR VALVES.

SPECIFICATION forming part of Letters Patent No. 684,819, dated October 22, 1901.

Application filed June 13, 1899. Serial No. 720,385. (No model.)

' by 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.

This invention relates to the conversion of eccentric motion into rotary power, and particularly to mechanism for the operation of valves, shafts, rollers, or axles requiring rotary motion from an eccentric or eccentrics,

and the means or mechanism employed may be termed eccentric-gearing.

Some of the objects of the invention are to provide direct and positively operating means adapted to be connected with and operated by an eccentric or eccentrics on the main or drive shaft of an engine or motor to actuate the valves of an engine or other apparatus, and the operation of such valves is preferably eifected by the employment of crankdisks carrying crank-pins actuated by the eccentricrod, the valves operated being preferably 0f the rotary type.

Another object of the invention is to simplify some of the mechanism usually employed for operating valves, shafts, rollers, and axles requiring rotary motion and to provide simple, cheap, and positively-operating means for actuating these parts preferably from the main or drive shaft of the engine or other apparatus employed.

With these and other objects in view the invention consists, essentially, in the construction, combination, and arrangement of parts, substantially as hereinafter more fully described in the following specification and illustrated in the accompanying drawings, forming a part of this application, in which Figure 1 illustrates a cylinder and main or drive shaft of any suitable apparatus to which theinvention is shown as applied; and Fig.2 is a side elevation of a portion of the construction shown in Fig. 1, illustrating the eccentrio-rod, crank-disks, valve rods or stems, and a portion of a main or drive shaft of any suitable apparatus.

Similar characters of reference designate corresponding parts throughout both views.

In illustrating the invention the same has been shown as applied to steam-valves, preferably of the rotary type, although the invention is not limited to use in connection with steam-valves, as it is obvious that the same may be employed in numerous other connections or applications.

Referring to the drawings, the reference character 1 designates a base or support of any suitable charactor for a cylinder 2, of any preferred construction, provided with suitable steam inlet and exhaust connections, whereof 3 represents the latter; but it will be understood that the construction herein shown is illustrated only as an exemplification of the invention in order that the function and operation of the same may be more readily appreciated.

Suitably mounted or journaled inthe framework supporting the cylinder is the main or drive shaft 4, actuating in any suitable manner the apparatus to be driven, and

this shaft is preferably provided with an eccentric 5, connected therewith in the usual manner, and upon the eccentric 5 is secured an eccentric-strap 6, of'any preferred form or construction carrying or connected to an eccentric-rod 7. The other end of the eccentric-rod is preferably T-shaped or provided with lateral extensions or arms 8 and 9, substantially as shown, or any number of arms may be employed, or the eccentric-rod may be bifurcated or otherwise constructed for connection with the crank-disks, as will be readily understood.

The extremities of the arms 8 and 9 are preferably provided with an eye or opening, which is desirably bushed to receive crankpins 10, so that the latter are permitted to revolve freely in said bushings during the operation of the parts. The other ends of the crank-pins 10 are preferably connected eccentrically with crank-disks 11, of any pre ferred form or construction, so as to provide for rigid connection between said pins and disks, and valve stems or shafts 12 are also connected with said crank-disks 11, as shown in Fig. 2 of the drawings.

The stems or shafts 12 of the valves (not shown) are preferably held in position by stuffing boxes or glands 13, of any preferred form or construction, or a bearing may be employed for said stems or shafts, if desired.

The valves here contemplated but not shown are of the rotary type and are constructed to be continuously rotated if the radius or half-strokes of the crank-pins 10 are exactly the same length as the eccentricity of the eccentric 5, or the distance between the center of the shaft 4 and the center of the eccentric.

The operation of the inven tion Will be readily understood from the foregoing description when taken in connection with the accompanying drawings and the following explanation thereof. The actuation of the main or drive shaft 4: will cause the rotation of the eccentric 5, which in turn will reciprocate the eccentric-rod 7, thus rotating the crank-disks 11 and imparting rotary motion to the valves through the mediation of the valve-stems 12, as will be readily understood.

I do not desire to confine myself to the specilic construction, combination, and arrangement of parts herein shown and described and reserve the right to make all such changes in and modifications of the same as come Within the spirit and scope of the invention.

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

1. The drive-shaft, the eccentric-rod, and arms integral therewith, the crank-disks and valves operated thereby.

2. The eccentric-rod provided with rigid arms, crank disks connected thereto, the valve-stems and valves carried thereby.

3. The drive-shaft, the strap and eccentricrod, rigid arms, crank-disks eccentrically connected to said arms and valves operated thereby.

In testimony whereof I have hereunto atfixed my signature in presence of two witnesses.

JOHN C. HENDERSON.

\Vitnesses:

FRANCIS W. BREUIL, JOHN J. Ross.

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