US1211007A - Governor mechanism for compressor-engines and the like. - Google Patents

Description

M. E. TEAGUE- GOVERNOR MECHANISM FOR COMPRESSOR ENGlNESiANDTHE-ILIKE. APPLICATION FILED OCT. l9, l9'l4h 1,21 1,007 Patented Jam 2,1917.

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GOVERNOR MECHANISM FOR COMPRESSOR-ENGINES AND THE LIKE.

Specification of Letters Patent.

Patented Jan. 2, 1917.

Application filed October 19, 1914. Serial No. 867,499.

To all whom it may concern Be it known that 1, Moses EDWARD Tnxcun, a subject of the King of Great Britain and Ireland, and residing at Bowson House, (linderford, Gloucester, in the county of Gloucester, England, have invented certain new and useful Improvements in Governor Mechanisms for Compressor- Engines and the like, of which the following is a specification.

This invention relates to improvements in governing mechanism for compressor engines and the like of the type in which a combined centrifugal and pressure governor is employed.

The object of the present invention is to devise an improved arrangement of the above type and the invention consists in governing mechanism comprising an expansion valve operated by a rack bar, a speed governor and a pressure governor each of which is adapted to act separately when required upon the rack bar.

The invention also consists in governing mechanism of the character above referred to wherein the pressure governor acts upon the rack bar through the medium of a bell crank lever while the other end of the rack bar is connected to a lGVQl loosely mounted upon a spindle which is connected to the speed governor, means being provided for connecting the loosely mounted lever to the spindle upon which it is mounted when required.

The accompanying drawings illustrate more or less diagrammatically one convenient arrangement of apparatus in accordance with the invention.

Figure 1 is an elevation, Fig. 2 is a plan of a portion of Fig. 1, the speed governor being omitted, Fig. 3 is an elevation on an enlarged scale of a portion of the mechanism shown in Fig. 1, parts being ShOVSIl in section, and Fig. 4 is a detail view showing in side elevation one of the levers illustrated in Fig. 3.

'In carrying my invention into effect in one convenient manner as, for example, in its application to a compressor engine I provide any suitable form of expansion valve for controlling the point of cut-0d of the power medium from the engine cylinder but I prefer to employ my well-known type of expansion valve as described in the specification of my prior British Patent No. 5384 of 1895, having a ported sleeve, the

any suitable toothed pinion or portion of pinion formed integral with or secured to the rotary nut c. In con unct1on with the expansion valve I provide a speed governor c of any suitable form and construction and a pressure governor 7 which in one convenient example may be in the form of a cylinder communicating by the port 9 with the pressure chamber of the compressor or with the reservoir and within which works a ram h loaded by means of weights 1', spring, or the like to any required extent depending upon'the pressure at which the apparatus is to operate. The two governors referred to are so combined with or connected to the expansion valve that they may operate independently thereon when required so that when, for example, the speed of the engine becomes excessive the speed governor c operates the expansion valve in such a manner as to cut off the power medium at an earlier point in the stroke while the pressure governor f operates in a similar manner when the pressure rises beyond a predetermined limit, the operations of the two governors being however entirely independent of one another.

In one convenient construction the rack bar (l is connected at one end to a link 70, one end of which engages with a rectangular or other suitable slot in the rack bar while the other end is loosely mounted upon a shaft orspindle Z held in a bearing which may be formed in one with or secured to the casing or framework of the expansive valve upon which spindle Z is rigidly secured a lever m connected by means of a suitable link or the like n to the collar or other moving part 0 of the speed governor. The pressure governor is connected by means of a single link 7) to a bell crank lever q pivotally mounted upon the casing of the expansion valve, the free end 1' of which is adapted to act when necessary upon the end of the rack bar (1 for the purpose of varying the cut-oflf, the arrangement bemg' such that the bell crank lever q is slightly out of contact with the rack bar (1 when the pressure governor is in its normal position. The rack bar (1 being connected to a lever loosely mounted upon the spindle l is free to move under the action 'of the air governor independently of the s eed governor while a clutch s is provided'for the purpose of connecting the spindle Z with the lever is sothat the rack bar willbe operated to vary the cut-01f when the spindle is rotated by the governor mechanism pulhng upon the link a. Thus the speed and pressure governor's act independently to vary the cut-ofl of the expansion valve while the valve itself is operated .by a chain drive and crank and con- "necting rod mechanism or by'means'of the lever -t' connected to the engine crank or eccentric by the link u, the lever t being mounted upon, a. spindle uupon which is rigidly mounted the lever to serving to operate the valve. The counterweight a; or its equivalent is applied to the mechanism by being fixed to a lever secured to the shaft upon which thelever k is mounted for the purpose'of bringing the expansion valve to its normal position when the action of 'either the speed governor or the air gov--' ernor ceases.

It is to be understood that I do not con fine my invention to the various details I hereinbefore given by way of example as the same may be suitably modified depending upon the type pf expansion valve to which the invention 1s to beapplied and the purpose for which the apparatus is to be employed-and I suitably dispose the various parts of the mechanism in any given relation to one another depending upon the particular practical requirements that are to l-Iaving now described my invention what I claim as new and desire to secure by Letters Patent is I 1. Governor mechanism for compressor engines and the like comprising in combination an'expansion valve, a rack banadapt- 1 ed to actuate said valve and a speed governor and a pressure. governorceach of which is adapted to act separately and independently upon said rack bar. V

2.-Governor mechanism for compremor engines and the like comprising an expansion valve, a rack bar actuating said valve," V

a pressure governor, a bell crank lever serving to transmit thevmovement of the pres sure governor to the rack bar, a' speed gov.-

ernorand means whereby the speed goverently of the speed governor.

abuts against one end of said' rack bar, a

ed when required.

nameto this specification in the two 'subscribingwitnesses: I

'MOSES EDWARD nor may actuate said rack bar separately and independently of the pressure governor.

3. Governon mechanism for compressor engines and the like comprising an expansion valve, a rack bar adapted to actuate said valve, a speed governor, link mechanism whereby said speed governor may operate said rack bar, a pressure governor and means,

whereby said pressure governor may operate said rack bar separately andindepend speed governor upon the rack bar independ= ent of one another.

5. Governor mechanism for compressor engines comprising in combinationan expansion valve, a rack bar'adapted to actuate said valve, a pressure governor, a bell crank lever, one end of which is connected with said pressure governor while the. other end speed governor, a link connected .with the other end ofsaid rack bar and loosely mounted upon aspindle connected by link mechanism with said speed governor, and

means for connecting the loosely mounted 95 link to'the spindle upon whichit is mounted when required.

6. Governor mechanism for compressor engines comprising in combination an expansion valve, a rack bar adapted to-actuate lever one end of which is'connected with said pressure governor while the other end abuts against one end of said rack bar, a speed governor, a link connected with the other 105 end of said rack. bar and loosely mounted upon a spindle connected by link mechanism with said speed governor, and clutch mechanism for connecting the loosely mounted link to the spindle upon which it is mount- Intestimony whereof I 'have signedmy presenee of Witnesses:

, FRANK J. G. SLEEMAN," O. KENNETH Hum said valve, a, pressure governor, a bell crank

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