US762934A - Engine-valve. - Google Patents

Description

1510.762334. l PATENTED JUNE-21.11904.

' 4E.A.N0E-LI1\IG.v

ENGINE VALVE.

APPLIOATION FILED DEO. 7. 1903.

N0 MODEL. 2 SHEETS-SHEET l.

g .f i I Hummm n. Y v v.

PATENTED JUNE 21, 1904.

yR. A. NORLING.

` ENGINE VALVE. APILIGATION FILED DBO. 7. 1903.

2 SHEETS-SHEET 2.

N0 MODEL.

NDRRIS PETERS. NC. LITHU.. WASHINGDN, D. C

. UNITED; STATEs Junge-'1, 1904'.

REINHOLD A. NORLING, OF AURORA, ILLINOis', AssIGNORgTO AURORA'` AUTOMATIC MACHINERY COMPANY, OF AURORA, ILLINOIS, A CORPO- RA-TioN OF ILLINOIS.

. ENGlNE-VALVE. y

SPECIFICATION lforming part of Letters PatentNo. 762,934, rl.{itc1I June 21,1904

Application filed December 7, 1903. Serial lim-184,080. (o medal);v l

TQ all whom, t may concern:

of Aurora,` in the county of Kane and State-of Illinois, have invented certain new andV useful Improvements in Engine-Valves, and I do hereby declare that the following is a full,

clear, and exact description thereof, reference beinghad to the accompanying drawings, and to the letters of reference marked thereon,

which form a part of this specification.`

valve-casing.

. o n line 5 5 of Fig. 1.

This invention relates to improvements-in valves for controlling the admission and exhaust of pressure fluid to the power-cylindersof engines or motors of the kind known as' oscillatoryf plug-valves.v

The valve embodying my invention is more especially designed for use upon pneumatic drills or mechanisms of that kind embracing a iluid-pressure engine of portable form applied to operate a drill or like tool; 'but the features v of'con'struction herein desc'ribed'and claimed may b e applied to engines or motors of other kinds.

My Ainvention includes improvements in valves of theI kind referred to in several par-4 ticulars, as will hereinafter appear.` A

In the accompanying drawings, illustrating my invention, Figure` l is a sectional view of a valve embodying my invention, taken through the central axis of the Valve-plug and chamber. Fig. 2 is a top or plan view of the' same. Fig. 4 is a detail section taken on line 4 4 of Fig. 1. Fig. 5 isadetail section taken Fig. 6 is a detail section of the cap of the valve-seat, taken on line- 6 6 of Fig. 3. Fig. 7 is aside View of the operating-stud through which one of the valves is actuated. Fig. 8 is an end view of the same. Fig. 9 is a side view of one of the valve-actu ating arms. Fig. 1() isa. facel view of the same. Fig. 11 is a side View of the valve` plug. Fig. 12 is an end view thereof.

In the said drawings, A indicates a part of the casing of a pneumatic motor or other engine,

and B C two power-cylinders formed in said casing. The valve shown in the drawings as lsupply chamberfE, whichl occupies a space in Fig. 3 is a bottom View ofthe embodying my invention isI adal'ited" iforjcon-- A .trolling the admission of the pressure`iiuid to '5D and its escape from the said power-cylinders vto the cylinders B and C, the valvezplug be-y ing'arranged to operate vin connection with. both of the cylinders. The valve-plug and thecylindric seat therefor have twosets of 'co-l near each end of, the/plug ,and seat and 0ppo site the cylinderswith which the ports .orpassages constituting the sets are associated. The

saidvalve-seat is formed inthe casing A at one side of the cylinders B and C and extendsl 3 across the outer. ends of said cylinders, the valves being interposed between .the outerv ends lof said cylinders and a pressure-fluidthe casingA at one side of the valvefchamber-l and from which the pressure Huid passes .through theports or passages of the said. valves to the outer endsof saidcylinders.

The valve seat or chamber isshown as proing F, which-forms the bearing-surface for the valve-plug and which is provided with slots or openings which constitute the inlet and out-- ports e2 and es, which extend from the'outer ends ofthe cylinders B and C to the valve-seats. and likewise terminate in slotsv in the bushings. The yalve-plug is provided with a longitudinal centrally arranged exhaust passage 5 'D' and is provided with eiternal'recesses d d, Q. which extend partially aroundjthe plug and A'.95 form-*passages adapted to 'connect-the outer j 6e` acting valve ports or passages located-one set i .7s vided -With a'bushing or cylindrictubular linletpo-rts and coperate with the ports or paseg sages in the Valve-plug D. The ports or pas- '1i-'j ends of the cylinders with the air-chamber E when the-plug is turned into position to bring one end of oneot' said pi'issagesr/or r/fopposite o't'- the transverse passages Il' (W, which extend E 'from the central exhaust-passage D of' said plug to the side Aface of the plug at points between the ends ot' the lrecesses l Fand are adapted for communication with the cylinderports 2 or fr when the valve-plug is turned to bring said exhaust-ports into register with the said cylinder-ports. The setsofpassages and ports tor the two cylinders are arranged at an Yangle to each other,so that when the 'plug is lturned to bring one'exhaust-port into register-at its end with a'poi't in the casing, thereby brii'iging-the exhaust-passage D into communication with the outer end of one ot' thecylinder-ports c2 or @the other exhaust- -port in the plug will be out of register with its associate cylinderport,and the latter will bein communication with the recess or (Z2.

The cylinder valve seat or' chamber for the valve-plu gD opens at its ends directly through the opposite side faces of the main casing A; but at the end ot' said casing at which are located the devices for actuating the valve-plug thesaid valve-seat isclosed bymeans of a capplate G, which has screw-threaded engagement'with the wall of the casing and in which is mounted a short rotative valve-operating spindle H, through which motion is transmitted to the valve-plug. At the opposite Vside of the main casing the cylindric opening constituting the 'valve-seat is "preferably closed by means of a disk I, which is inserted in the end of said opening over the valve-plug and held in said opening by means of a screw-threaded ring J, said disk l being provided with a ceritral aperture 1 arrangedopposite the longitudinal exhaust-passage D', for the escape ofA exhaust pressure fiuid'from the engine. Said diskl is employed for the purpose of excluding dust from the bearing of the valve-plug and to afford an end bearing for said valveplu g. -Said cap-plate G and disk l are arranged to bear against the ends of the bushing F, which is held in place by said cap and disk. `grings or gaskets Kand L arcfshown ''sint l {posed between thc end of the bushing 'ed by means of a pivot-stud n, Fig. 6.

vFand the cap-plate (i vand disk I, said packing-rings servingto insure tight joints between the parts at these points.

Actuating devices for the valve-plug l) eini brace an end wisc -moving actuating'- rody M which is `connected with and operates the valve-plug D through 'the medium of the ac mating-spindle H, which is provided with a crank-arm N, to which the rod M is connect- A loose or tiexible connection is. provided be- The exhaustports in the valve-plug are termed by means plug-,as follows: The end et' said valve-plug adjacent to its operating-spindle is provided with two partial or segmental endwise-projecting fianges d (Zi, Figs. ll and 1Q, between the'ends of which are formed radial notches or openings adapted for engagementwith radial holding-arms l1, L, extending. outwardly from a disk or hub /f. on the inner end of the spindle, as clearly seen -in Figs. 7 and 8. Said spindleis held from endwise movement in its bearing in the cap-plate by contact of the disk t" with the inner end ot' said cap-plate. and by the contact ot' the arm N with the outer 'ace of said cap-plate.- The disk l/ is free from contactwith the end of the valve-plug; but the arms la. Zr; have close bearing .contact with the ends ot' said flanges d d, so that 1 while the oscillatory movement -transmitted to the driving-spindles is transmitted directly to the valve-plug'there is'no such rigid connection between said valve-'plug and said spindle as' to prevent the valve-plug from maintaining' its position in the surrounding s eat uniniiuenced by the adjustment of or any 'equalities in the movement'ot'said driving-spindle. 'Moreoven the pressure Huid in the supplychamber 'E tends by its pressure on the adjacent side. face of the valve-plug l) to press the same laterally toward the cylinder-ports, and thus maintain a tight joint between the valve-plug and its seat, and it is manifest that the loose connection between the driving-spindle and the valve-plug', provided as .above described, enables the plug to be thus pressed against its surrounding seat by the pressure coming thereon without restriction by reason ot' its engagement with the saidA driving-spindle. Special provision is made'to insure pressure of the valve-plug laterally against the side of its seat in which the cylinder-ports are located by extendingboth ot the recesses Z and Z2 around the plug D past or beyond the in- IOL,

let-'ports and e', so that the said recesses will in general terms be located at the side of the plugnearest the inlet-ports and will have their ends at approximately equal distances from the cylinderports. 'l he actual length given to the said recesses vmay be greater or less, de pending upon the extent of rotative movement given to the plug, which will control the width of the bearing-faces of the pl ug between the exhaust-ports and the adjacent ends ot' the recesses which register with the cylinder-ports, "or other considerations; butto produce the re. sult stated the recessesmust extend around the plugin both `directions from a point on the plug diametrically opposite the exhaust-- ports. In other words, the bearing-faces at either side.'oftli'e exhaust-ports may be wider 0r narrower than shown, and the llengths of the recesses or distances which they extend around the plug may vary correspondingly; but for the purpose stated the said -recesses -will be arranged symmetrically with' respect tween the actuating-spindle 4H and the valveto the cylinder-ports in the casing or the exand the plate G.' vAir under pressure 'is admitted through said hole. (Z7 to the said space between the end ofthe valve-plug and said seat, and thus hold said valve-plug in contact stud mounted in the casing'in alinement with to the plug while permitting lateral moveend of the valve plug,

4 bears against the inner face of the cap,

a .=fluid-supply passage, of

-.provid ed with a longitudinal exhaust-passage,

connected with the valve-plug by means adapt-- cap-plate Gr and serves topress the valve-plug endwise toward the exhaust `end of the valvewith the disk I and vprevent leakage at that end of the valve-plug. The air-pressure thus supplied to the space at the inner face of' the cap-plate G also serves to press the, operating-spindle H outwardly and hold the disk i' against the cap-plate Gr, thereby preventing leakage between the cap-plate and spindle.

lclaim as my inventionl.' The combination with a'casiiig provided with a valve-chamber having admission and cylinder ports, of an oscillatory valve-plug a radial exhaust-port extendingfrom said longitudinal passage to the surface of' the plug, `and a'recess extending partially around the plug at the side of the sameremote from the exhaust-port in the plug and adapted to bring the admission-port into communication with the saidv cylinder-port, and means for actuating the lplug embracing a rotative operatingthe axis of' the valve-plug and which is loosely ed to transmit rotative movement of the stud ment of the plug rel Ytively to the stud.

2. The combinatie Vwith a casing provided with a valve-chamber, of a valve-plug in said chamber, a cap applied to the easing over the an operating-stud mounted in said cap and provided on its in- -ner end with an enlargement or disk Whiclci.

sai Iplug having a notched fiange vwhich surrounds the said disk and the said stud being provided with peripheral arms which engage the notches of said flange, and means affording a supply of pressure fluid to the space between the end .of the plug and said cap to hold the said disk against the cap.

3. The combination with a casing provided with a valve-chamber and with a pressurea valve-plug in said gcliamber, a cap applied to the casing to close `the end of the chamber, an operating-stud which-is mounted to turn'iii'said cap and is loosely connected vat its inner end'with the' valve-plug; said stud having a disk or enlargement at its .inner endA which bears against the 'inner' face 'of the'cap, one of' the parts having said pressure-Huidspace between the a passage which connects supply passage with the plug and cap, and which affords pressure in said space by which the disk oii the operatingstud is held in contact with said cap.

- 4. rl`he combination with a casino with a cylindric valve-chamber having lateral inlet and cylinder portsand with` a pressurefluid-siipply passage, of a cylindric valve-plug in said chamber provided with a longitudinal exhaust-passage opening through one end "of provided Y theplug,l said chamber having at one end an exhaust-'passage and an annular bearing-sur- .face against which' the exhaust end of the valve-plug hasbearing, a cap closingthe'opposite end of the stud mounted in said cap which is loosely conneetedwith .the valve-plug, said stern having a disk or enlargement which bears against the face of' the cap, one of said. parts having a.

chamber,` and an operatingpassage which connects said pressure-fiuid-' supply passage ,with the space between the plug and cap and which affords pressure on the plug to hold the exhaust end of' the latter in contact with said annular bearing-surface.

5.' The combination with a casing provided with a cylindric valve-chamber'having lateral inlet and cylinder ports and with a pressurefluid-supplypassage communicating with the inlet-permetl a cylindric valve-plug in "said chamber provided with a longitud in al exhaustpassage opening through one end of the plug, said chamber having at one end an exhaustpassage and an annular bearing-surface against which the exhaust which is loosely connected with the said stud having on its inner end said cap, valve-plug,

- a disk or enlargement which bearsagainst the REiNi-ioLD A. NORLiNe.

Witnesses:

C. E. Eiiikson,

F. A. BURGnss.

end of the plug has bear-` ing, a cap closing the opposite Zend of the chamber, and an operating-stud mounted in' that l claim the foregoing as'.

ILO

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