US1233022A - Valve-grinding machine. - Google Patents

Description

N a 6. BROWN. VALVE GRINDING MACHINE. I APRLICATIQN min ml. n. 1915.

a susn-suzu I.

n1 I I I J l l l I I ATTORNEY Patented July 10, 1917.

"H. manowu. I VALVE GRINDING MACHINE. memo mzo'ml. i1. 1m.

Pateilted July 16, 1917.

INVENTOR ATTORNEY H; 6. BROWN. VALVE GRINDING MACHINE. APPLICATIQN FILED JAN- Il. Iplg.

Patented Jul 10, 1917 a plurality of UNITED STATES PATENT OFFICE.

HARRY G. BROWN, OF NORTH YAKIMA. WASHING TON.

VALVE-GRINDING MACHINE.

Application filed. January 17, 1916.

To all whom it may wa e/n Be it known that l, llanny (l. BROWN. a

citizen of the United States. residing at' North Jfakilna, in the 1.:ounty ot' Yakima and State of Vashington. havo invented eerl-ain new aiul usol'ul -lni irovemenl-s in a l'nlre- Grinding Machine ol whieh the, following is a. specification.

An object of my invention is to provide a valve grinding maehine Jhieh may he useil lo griml one or to sin:ultanooushv grind valves of one or more gas or explosive engimrs. tho valro grinding: meshanisin being; so oonstriutleil aml arrangoil that it may in: useil. in :i lactory. garage. or repair shop, by lining nmunl'oil on a sz'alioin ary or portable snpport, or may he useil to grind. the valro or Yalros of a single engine by lazing mounted in noajuuetion with the particular engine to ho lreaterl, ainl whieh also is so arrangeillhat it may be. mounted on a suitable su iport or frame in a relation to not upon the valves of the V-type of engine. i

A further ohjeet is to so eonstruet the parts that a resilient and yielding pressure is exerterl upoh each of he valves to llUlLl the same. against the soat in the grinding operation anrleto further arrange means by which the valves are each iermitl'eil to he raised umler ihe tension of a spring; Jilted around the stem at i'ireilelerminei l intervals to he again resealeil and to than aroi l rutting or grooving: oi the valve aml its sent. this rotting or grooving oi the tilting: aurlaoes heing oeeasioneil lay uneven distrihm tion ol' tho emery powiler and oil or other alirasive material whieh is plaeoil lll] )li.. l-lil3 valve seat,

A still further ohjoet lies in the eonst'ra w lion uni-l mounting oi the \nli'e enga zin l and turning hi!" aml the par? awoeiateil. therewith to eauso oporalion of tho same in such a nmnner that ailjnsl n'ient may be made to adapt the marhin'e to ho used upon engines having the. valves located at variously spacial points.

\Vil'h tho ahoreaml other ohjerls in View, my invention eonsists in eertain novel features of construction anrl combinations of parts \vhieh will ho horninafter set forth in mni'ieetion with tho accompanying ilraw ings aml then pointed out in the claims.

in the ilrawingsz Figure I is a view in side elevation of the. completed machine.

Specification of Letters Patent.

Patented J uly 10, 1917.

Serial No. 72.607.

Fig. 2 is a view inenil elevation of the. strurture iliseloseil in Fig. l. the view being ialien l'rom lhe ilriring'enil of the machine.

l ig. Il is a ileLail top plan view to better illustrate lhe liil turning means.

Fig. l is a ilelail IMJ'SIIUl'llYU view of the shank enll of one of the valve engaging hits.

Fig. 5 is a rertiral seelional View through one of the hit Htll'liL s and tho operating harrel associated therewith.

Fig. (3 is a View in side elevation of the strueliure ilisnloseil in l ig. 5 with the top iilulfill :Ua'iljy,

Fiji. '7 a view in perspertive of the up per eiul of one of the barr ls with a slightly nioililieil form of operaling, moan}; fit-teal lherelo.

Fig. 8 is a transverse seet-ional View taken n the line S 8 ol l igf. 5.

Fig. l is a fragmentary detail view to show eertain of the operating parts.

Fig. '10 a iletail sertional View ialcen through an engine eyliniler with the ralve illustrated as litteil i'u'eliminary to the grindilng of the Same. I i

The Frame strneture emnprises the up righls l aml 2 which are ronneetecl arzross by the rross liars 3 and laml it is preferable that eaeh of the uprights 1 and 2 he con.- slrueteil of two members whieh are proriileil wiih the right aml left hand ihreads al .3 ainl l: on the ailjaeenl enlls thereofl the llll'fii'lliill i' srrrw-lhreaileil sleeves i heiny g' |1I'U\'l(ll"(l lo lie reeoired over these srrawlhrmuleil emls so that the proximity of eross meinhers 3 anil lmay he lin it is pi-elerahle that the lrain that in. hoth the uprights nml the erosn inns he eonslriu-teil of eyliiulrieal lulu; metal and at the lower eiul n earl] of lhe uprighls heariugjn h and 5" are. proriileil to the (Hill shah ill revoluhly mounted therein. The upper rials of the uprights 1 and are offset. as is hetler illustrated in l ig. 2. andat lhe enils oi these orl'aet port-ions, the hearinggs l'l an l l1 are proriileil.

.in operating: shaft 13 is journaleil arross the frame in the. hearings 11 aml 1'2, and at the (inter eml oflhis operating shall; a driving gear is mounterl. Power is transmitted to the driving shaft 13 through the. medium of a crank handle 15,. or if desired, a belt may he led over the belt pulley '10 on the shaft and the machine may he thus power driven. tho power operation being perhaps IH'PfCEILlIlP where the maehinn l5 to he so I ' have lugs and- ;the-lugs are bored through to receive used by the manufacturer. A stub-shaft 17 is mounted at its inner end in a suitable bearing provided on the upright 2 and at its outer end is journaled in a bearing provided in the yoke or bracket member 18, and a gear Wheel 19 is secured on this stub-shaft 17 to mesh ith the gear 14 and to cause the turning of the stub shaft as the operating shaft 13 is revolved. A sprocket Wheel .20 is secured on the outer end of the cam shaft 10 and a sprocket chain 21 is led over this sprocket Wheel 20 and over a sprocket wheel 22 which is secured on the stub-shaft 17, power thus being transmitted by a more or less direct drive from the operating shaft 13 to the cam shaft 10.

In the present disclosure, I have illustrated a machine which will simultaneously grind both the intake and exhaust valves of a four cylinder engine, and is shown, there are eight operating wheels 23 mounted on the operating shaft 13. As is better illustrated in Fig. 1, the rims of these wheels are given a 10 to 15 incline from the angle at which the hubs are bored, and in this way the operating wheels are made to take substantially a cam form. The operating shaft 13 has a key or spline 24': on one side thereof and the hub of each of the operating wheels 23 is provided with a key-Way or slot to receive this spline so that the operating Wheels will be held against turning movement on the operating shaft 13 but are capable of endwise sliding movement, thev adjustment of the same being set and maintained through the medium of the set screws 25 which are received through the hub to be brought to a bearing against the operating shaft 13.

In the use of this machine, the valves 26, as illustrated in Fig. 10, may be of the tapered type, or may close down against flat seat, the coil spring 27 fitted around the stem thereof to normally exert a tension to hold the head of the valve out of contact with the valve seat 28,- and the heads "are slotted or kerfed across to provide the slotted opening 29 in which the end of the turning bit is received. It is the usual. practice in the manufacture of valves for explosive engines to provide this slot or kerf 29 in the head and for this reason my invention is adaptable to be used with substantially any type or make of explosive engine.

The turning barrels 30, now referring more particularly to Fig. 5 and 6, are provided with the flanges 31 and 32 which extend therearound at spaced apart points to receive the bearing rings 33, better illus- .trated in Fig. 8. These bearing rings 33 34 provided from one side thereof the cross member 3 of the frame. The turn.- ingbarrels are revolubly mounted in the sleeves 33 and by adjusting these slwves along the extent of the cross member 3, and then securing the same in place by means of set screws 35, th barrels may be mounted in 'a relation to correspond with the disposition of the valves of the engine and with the placing of the. operating wheels 23.

The shells 36 are made of a size to be 'revolubly fitted in the turning barrels 30 slotted openings 39 through which pins 40' are received to mount the socket members to be capable of endwise sliding movement in the shells but to yet hold the same against turning movement with respect thereto.

As is better shown in Fig. 9, the shells 36 have the lower ends thereof serrated to form the teeth 41 and externally screwthreaded sleeves 42 which are adapted to be screwed into the iuteriorlyscrew-threaded lower ends of the barrels 30, have the upper edges provided with serrations or teeth at 43 which teeth are made of a size and contour to fit and be engaged with the teeth of the shells 36. A plate or disk 44 is mounted on the upper end of each of the shells 36 and ball-bearings 45 are provided between this plate and a plate or disk 46 which is placed thereabove, a coil spring 47 being mounted in-the upper end of the bore of each of the turning barrels 30 to bear against the upper closed ends thereof and a gainstthe plate 46 to normally exert a pressure to hold the shells 36 in a relation that the teeth 41 thereon are in mesh with the teeth 4.3 of the. sleeve 42. A second coil spring 48 is mounted within the shell 36 to hear at its one end against the plate 44 and with its opposite end bearing'against the upper end of the socket member 38 to exert a pressure to extend this socket member from the shell 36 and through the sleeve 42, the

socket member being held against too great extension by reason of the fact that the pin 40 is fitted through the slotted opening 39 thereof. I

It is preferable that the socket members 38 have the sockets 49 thereof square or polygonal shaped in cross section and the turning bits 50 have the shank ends made of the same polygonal form, these shanks being provided with a plurality of orifices 51. in which the set screws 52 carried by the socket members 38 will engage to hold the bit members in a predetermined extension. The bit members 50 are Wide and flattened out at their lower ends to provide the val vc engaging ends 53, and understood that these ends 53 will be made it will of course'abe i been brought to the proper operative relation, the set screws will be tightened to hold the operating wheels in the proper mounting. In the present instance I have disclosed the'cams as being disposed alternately in a diametricall opposite relation as this positioning 0' the cams will bring the bit members 50 into and out of the position where the valves are engaged in the grinding relation, in such a manner that less strain will be placed upon the operating parts and less power is required to drive each of the gang of grinding means. The valves are fitted in accordance with the. disclosure of Fig. 10 and theabrasive material is placed upon the bearing surfaces of the valve and its seat, the ends of the bit members "are fitted in the groovesdn' the valve head and the proper adjustment and securement of the frame structure upon the engine is made through the mounting memhers 64 and 65. A further adjustment may be obtained through the medium of the threaded sleeve 7 and when the parts have each been brought to the proper adjusted relation, turning of the operating shaft 13 through the medium of the handle 15 or through a belt led over the driving pulley 16 will cause the operating- -wl'icels 23 to be turned and through their engagement with the heads of the turning barrels 30 will impart an oscillator movement to these turning barrels. It is preferable that the gear 19 be made approximately twice the size of the driving gear 14 and that the same .ratio be observed between the front wheels teeth 41 to be engaged with the teeth 43, the

socket members 38, the bits 50 and consequently the valves are turned, the valves being given a reciprocatory movement within or against the seats 28 and through the fact that an abrasive material is spread in a layer or film therebctween, accomplishing a grinding action and forming a new surface on both the valve and the seat. continuation of this oscillatory movement of the valve against the seat without varying the relative bearing thereagainst will cause the valve or the seat. or both. to become grooved" or out due to the fact that it is practically impossible to obtain an even and uniform distribution of the abrasive material ovor all parts, and to overcome this objection, the cams are provided to raise '41 and 43 is in a'varied relation from that While I have herein shown and described u only one specific form of my invention, it .will be understood that various modifications in the form of the mounting, in the arrangement of the parts to permit the adjustment thereof. and' in other features of the invention might be resorted to without departing from the spirit and scope of my invention, and hence I do not wish to be limited to the exact disclosure but only to such points as may be set out in the claims.

I claim 1. A valve grinding machine comprisin a turning barrel, an operating whee mounted inconjunction with said turning barrel to impart oscillatory movement thereto when turned. means bywhich a. valve is coupled to move with the turning barrel, means to raise the valve coupling means to permit the valve to be unscated and to reseat in a varied relation, and power means to simultaneously turn the o erating wheel and actuate the means byw iich the valve coupling'mcans is raised.

2. A valve grinding machine comprising a turning barrel having a clearance space at the top thereof for reception of an operating wheel, a shaft mounted above said turning barrel, an operating wheel obliquely disposed and fixed upon said shaft and received in the recess provided in the top of the turning barrel. means connected with the turning barrel to engage with and hold a valve to be turned and moved therewith. and

means to impart revolnhlc movement to the I the parts to be mount d in the proper opcra- "bearing pressure io normally hold the-bit extended therefrom, operating: wheels'lu' which turning; movcnwnl. is iu'umrtedntothe turningbarrcls in a: rvc-iprooat'ory path to cause-the valve to be ground againstitsseaf,

and meansrby which each turning bitis' ra1sed-aga1.ust,=:the bearing PXQSSUIG Qf'glllilt' springs tof such' an extent that the valve is permitted coheraised from its seat androseated 111a variedrelatiou. r 5. A. valve grmding machine comprising a. frame structure, a plurality "of turning" barrels mounted on the frame structure,

' turning bits carried by the-said barrels to engage with the valves of an engine, operating wheels by which turning movement-is imparted to the turning barrels in awe-1 rocatory patlr to cause the valve-rte; be ground against itsseat, means by which the i. valve is permitted to he raised from its seat and reseated in 'a' varied relation; 'andwlriv in'g means hys'which' turning'inovement is. imparted tothe operating wheelsand actua tion movement is imparted to the valve releasing means'at a relatively lower'speed.

-- 6. A valve grinding machine comprising,

a. supporting frame structure, a plurality of turning barrels mounted on said structure turning bits carried by said turning: harrals to engage with andhold the valves of an ongine an operating shaft, and a pluralily of r operating Wheels mounted on said operating.

shaft and having the rims tin-roof disposed at an angle and engaged with (he turning barrels to cause the same to have osi-illatorv movement as the operating shalt is lluau-d.

7. A valve grinding machine comprising a supporting frame sl ructnro consisting ol' uprights and a pair of spaced apart wuss bars. an operating shaft mounted in liuaringgspro vidodat the upper end of said l'mrighl's, turning barrels supported on. one of said cross bars to be capable of turnin movement, turningbits carried by the turning barrels to he engaged with and hold the valves of an engine, means by \vhirh ihe turning: barrels are adjusted and Sl. to the proper relation to engage with the valves, said turning harm-ls provided with a groove at one Side on the head thereof, and operating \vlnrrls having the rinisih-a-rrofiii at an angle and received in the groin the turning barrels to cause the turning; barrels to have oscillatory movement as the avlaels"-havi'n movement. turning bits rarricd by the iurnin'gl barrels to be on 'lnflrd with and hold the valves of an. rligir i'uwaus bv ivhirh; the turnip; barre 'aroadjusted fnfl set to the proper rvlatii'm' li'iriiiiagiou'itli'ilurvalvcs, Said tin-11am lrii'i'lg )vided with fgroovv. ill-one side Al thereof; operating 1' gdis'i'iqsvd :u. an align, and uirfgro'ov-i-gmf the turning barrels tfo'rah'sc the turning harrels tohaveosrill-iio' [the ()]ll.1flfimpart this 7 grii'i'din irlioii lioul" thinseats. a ram irariugs provided at llw. "-f uno iuprightyaml rams "'al in uponj' rotation L I llvof'to luriod relau'jnscal d aud t .aid ago. lengthtlmi-m'r collars iidjhslxablv rarricd on the lower of said more bars afiioriiially carried with the turning barrels and to be capable of enrlwisu sliding 'moveiiionttherein. turning bits adjustably carried within the socket members and disposed be ongragcd' with and hold lho valves of an engine. an operatin; shaltlnountod' across the uprights near the upper ends tlicrcof sa idturning lmrrols provided wit h r(' csscd" port-ions, and [operaliug \vhcclwha'ving the rims-thereof lisposed at an angle nmunlcd on the operating shall to have the said rims reocivml in the rm-ossod portions and as the operating shaft is turned to impart an oscillatory moveu'ient to the turning barrels and consequently to the valves.

l A valve grinding machine comprising a frame strurluro oi'msisting of a pair of 'up right nun'ibors \vitb rross bars disposed therolwtuecu in a spaced relation, turning barrels rotaiably mounted on the upper 01' said cross bars to be adjustable along the length thereof, socket members mounted in. rollars a-cljustahl v carried on the lower of the cross bars to be normally carried with the turning barre and to be capable of e sliding a bits adjustably carried within the socket members and disposed to be engaged with and hold the valves of an engine, an operating shaft mounted across the uprights near the upper-ends thereof, said turning barrels provided with recessed portions, operating wheels having the rims thereof disposed at an an le mounted .on the operating shaft to have the said rims received in the recessed portions, and as the operating shaft is turned to impart an oscillatory moven'ient to the turning barrels, and consequently to the vali es, a cam shaft mounted between the upright members at the lower ends thereof, annular shoulders disposed from said socket members, and cams carried by the'said cam shaft to engage with the annular shoulders to raise the socket members and consequently the turning bits to 'a relation that the'valves are released from their seated positions and are reseated in a varied relation during the grinding operation.

11. A valve grinding machine comprising a frame structure consisting of a pair of upright members with cross bars disposed therebetween in a spaced relation, turning barrels rotatably mounted on the upper of said cross bars to be adjustable along the length thereof, socket members mounted in collars adjustably' carried on the lower of the cross bars to be normally carried with the turning barrels and to be capable of jendwise sliding movement therein, turning bits adjustably carried within the socket members anddisposed. to be engaged with and hold the valves of an engine, an oper- I ating shaft mounted across the uprights near the upper ends thereof, said turning barrels provided with recessed portions, operating wheels having the rims thereof disposed at an angle and mounted on the operating shaft to have the said rims received in the recessed POIllOXlS, and as the operating shaft is turned to nnpart an oscillatory movement to the turning barrels and consequently to the.

valves, a cam shaft nmuntcd between the upright members at the lower ends thereof, annular shoulders disposed from said socket members, cams carried by said cam shaft to engage with the annular shoulders to raise the socket members and consequently the turning bits to a relation that the'va-lves are released from their seated positions and are reseated in a varied relation during the grinding operation, and power means by which movement is imparted to the operating shaft and at a relatively lower speed to the cam shaft.

12. A valve grinding machine comprising a. frame structure consisting of a pair of upright members with cross bars disposed therebetween in a spaced relation, turning barrels rotatably mounted on the upper of said cross bars to be adjustable along the length thereof, socket members mounted in collars adjustably carried on the lower of said cross bars to be normally carried with the turning barrels and to be capable of endwise sliding movement therein, turning bits adjustablycarried within the socket members and disposed to be engaged with and hold the valves of an engine, an operating shaft mounted across the uprights near'the upper ends thereof, said turning barrels provided with recessed portions, operating wheels having the rims thereof disposed at an angle mounted in the operating shaft to have the said rims'received in the recessed portions and as the operating shaft is turned to impart-an oscillatory movement to the turning barrels and consequently to the valves, a cam shaft mounted between the upright members at the lower ends thereof, annular shoulders disposed from said socket members, camscarried by said cam shaft to engage with the annular shoulders to raise the socket members and consequently the turning bits to a relation that the valves are released from their seated positions and are reseated in a varied relation during the grinding operation, power means by which movement. 18 imparted to the operating shaft and at a relatively lower speed to the cam shaft, and means by which the machine may be mounted and supported in the proper relation upon an engine structure.

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

HARRY G. BROWN. \Vitnesses CLAIRE A. BICHSEL, AmnA E. PoxzAxELLn.

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