US1069541A - Valve. - Google Patents

Description

` D. P. FOX.

Patented Aug. 5, 1913.

2 bHEETv 5HLE'1 ifo WITNESSES D. I'. Fox',

' l VALVE.

' APPLICATION FILED 00T. 1 1912. A '1,069,541 Patented Aug. 5, 1913.A

z SHEETS-'snm 2.

v $725 Atlorney lexhaust steam from the ,26 communicates with the discharge pipe 10.

A gear-wheel 27 is carried by the outer end ,of the shaft 19 and this bevelgear 27 meshes with a bevel-gear 2S carried by the valvefdriving shaft29'. The shaft 19 is supported at its outer end by means of a bracket which bracket is screwed to the outer plate 11.. .This outer plate 11 forms a closure for the compartment 24 which contains the rotating valve 20. A packing 32 is 'formed around the shaft 19 to constitute a steam tight joint and prevent the passage of steam through the plate around the plate 19. This bracket is adapted to longitudinal movement. vA bearing 33 is carried by the outer plate 11 and straddles the shaft 29 adjacent the gearfwheel 2S and constitutes a support for said shaft. Bean hold shaft 19 against ings 34 `are carried by the body of the engine and also support the shaft 29. A drive-gear 35 is carried by the rear end of the shaft 29 andmeshes withthe bevelgear 36 carried by 't'he .main shaft 2. These gears are soI ar- I l ranged as to cause the rotation oi' the valve 20 in accordance with the stroke of the pist0n of the engine.

Arclosure arm v37 is pivotally secu-red to the 'rotating 4valve 20 by means ot a pivot *bolt 38 and this closure arin is provided with a weighted outer end 39' which weighted end will cause the outer` end of the arm 37 to swing outwardly when the speedlof the valve 20 has reached a predetermined point, owing to the centrifugal force of the valve 20. rIhis swinging movement of the arm 37 will close the inlet aperture 22 as will be seen screw 45 is threaded through in dotted lines in Fig. 2, and thereby cut olf the' passage of steam into the cylinder of the engine. A guiding bridge40 iscarried by .the valve 20 and the arm 37 works there-.-

through and it will be seen that this guiding bridge will limit the swinging movement ot the armr37'. IA regulating lever 41 is pivotally secured upon the valve 2O bymeans of a pivot-pin 42 and a cil'spring 43 connects the arms 37 with the tree end of the lever 41 so as to normally hold the arm 37 away from the aperture 22. A journal 44 is formed upon thevalve 2O andl an adjusting this journal 44 and engages the rear end 46 of the lever means of this adjusting screw the lever 41 may be adjusted so as to regulate the tension ofthe spring 43 upon the arm 37.

From the foregoing description it will be seen that a very simple and eihcient device port 16. This portpipe 9. A dishas been produced which will be at all times shielded withiny theicasing of the engine and which will automatically control theengine so as to shut the same. oli provided the engine should reach a speed 'abovea predetermined point. It should also-be understood vthat by the use of the rotating valve as set forth, the cost of production and maintenance ofthe engine will be materially reduced over the engines and valves which are now placed upon ,the market. It should be still further obvious 'that'ow'ing-'fto the continuous open position of the. inlet-port for supplying steam to the iston,`the power of the engine will be great y increased and that owing to the construction 'of the exhaust pocket 'formed in the rotating valve', the exhaust steam will be readily and immediately withdrawn from the engine after the inletport 'has been closed. It should be still further obvious that owing to the driving mechanism for the rotating valve as set forth, the

wear upon the engine will be materially reduced yowing to the fact that by having the direct drive for the rotating valve as set forth, there would be no rattling ofthe parts and hammering .of the cams and ecentrics which usually takes place in the operation of the engine provided with ,the usual reciprocating steam valves.

From the foregoing description it will be seen that as soon as the engine` ets oli'- center, the steam will pass through t e.. inletports with full force so as to eiiicientlydrive the piston.

What is claimed is:

1. An engine of the class prising a cylinder, a rotating valve carriedby said cylinder said rotating valve provided with an inet aperture, a pivoted arm carried by said rotating valve, a weight formed upon the outer end of said pivoted arm and adapted to swing'outwardly for closing said arm over said inlet, aperture, means controlling said arm foi-'limiting the swinging movement thereof, a regulating lever pivotally secured to said rotating valve,

spring means connecting said arm with said lever, and an adjusting screw carried by described coin-A said rotating valve and engaging'said lever f for regulating the tension o-said spring whereby said arm will be caused to swin over said inlet aperture at a predetermined point. f

2. In an engine, a rotary valve provided with a port, an arm pivoted lon-said valve and arranged to swing over the port undery the influence ofce'ntrifugal action, means to limit the movement of said arm, a spring connected with said arm and urging the same inwardly, and means connected. with said spring to regulate its tension.

3. ln an engine, a rotary valve provided with a port, a member mounted on said valve and arranged to move outwardly to cover In testimony whereof I hereunto affix my :tEhe porthundlr the1 influence ofdcentrifugal signature in presence of two Witnesses.

orce W' en t e va ve is rotate means to T limit the movement of the member, yield- DEB NIS F' FOX able mea-ns to resist the movement of the Witnesses:

member, and an adjusting device for lthe last IRv. L. MQCATHRAN,

mentioned means. L. N. GILLIS.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

. Washington, D. G.

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