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June 25, 1946- J. R. RICKETTS 2,402,775 DEVICE FOR FACING THE SLIDE VALVE SEAT 'OF A TRIPLE VALVE Filed Sept. 30, 1944 - - |Liump % :5: r ' INVENTOR. JAMES R. RICKETTS Md 2,402,775 Patented June 25? 1946 : UNITED STATES PATENT OFFICE navrcnroaraomo 'r'iia ‘SLIDE VALVE SEATS 0F TRIPLE VALVES James R. Ricketts, Berkeley, Calif. ,. Application September 30, ‘1944, Serial No. ‘556,601 g 4 Claims. (01. 51-170) 'l2;are~formed at the side marginal edges of the valve seat and the bottoms of these grooves lie in a plane exactly parallel to the correct plane of the valve seat ll. When the slide valve seat ll wears, it wears unevenly,~ usually being low in the center and high at the ends, and when it so wears, it necessitates that the seat be re-surfaced or re~ faced to place the entire area of its surface on the ’ particularly pertains to a device for facing the 1 slide valve seat of a triple valve. ' The slide valve seat of a triple valve wears un ' evenly causing leakage and occasionally requires that the slide valve seat to be re-surfaced. Here tofore‘, various methods and machines have been devised for re-faclng such seats. However, the same plane; ' re=facing operations by these prior methods and machines have been slow and costly and have re In the operation of the device Hi, I utilize the grooves I2 as a medium of guiding the machine or device Ill. The machine Ill comprises an elongated rigid frame or body M of a Width ap quired the services of a highly skilled mechanic, and ‘on the whole have not been entirely satisfac-‘ ' proximately that of- the slide valve seat H and of a length considerably greater than the length i. It is the principal object of my present inven tion‘ to provide an improved device which is com paratively simple and inexpensive in construc tion, ‘but which can be utilized to expeditiously and e?ectlvely re-face‘the slide valve seat of a triple valve, which device does not require for operation the services of a highly skilled techni clan. .~ One form which the invention may assume is exemplified in the following description and illus trated by way of example in the accompanying drawing, in which: Fig.1 is a side elevation of a machine or tool embodying the preferred form of my invention with parts thereof broken away and in section to more fully disclose certain features of con struction. ' Fig. 2 is a plan view thereof with parts broken away and in section to show certain features of construction. I‘. Fig. 3 is an enlarged transverse sectional view taken on line 3-4 of Fig. 1. \ 2 1 ‘This invention relates to machine tools and tory. ' ' ' Fig. 4 is an enlarged fragmentary view of one handle end of the device and shown in section disclosing the method of adjusting the feed of of the triple valve body. The ends of the frame II are turned to form handles Hi. This is so that the device It may be projected through the bore Ha of the triple valve with the ends projecting 20 a considerable distance beyond the ends of that valve so'that the handles l5 may be grasped by an'operator and the device l0 reciprocated longi tudinally of the seat H to feed a re-surfacing or re-facing tool l6 thereover. 25. The tool i6 is circular and may be a grinding, lapping or cutting tool, and in operation of the device ill, the tool It is revolved to effect the re surfacing or vre-facing. As is illustrated in Fig. 3, the tool 16 is of a diameter just slightly greater than the width of theyslide valve seat II, and it is mounted flatwise at the underside of the frame M with its axis centrally between the sides of the frame and centrally between the ends thereof. The tool i6 is secured in any suitable fashion on a sleeve H which extends upwardly into the frame M and suitably journaled therein. Non-rotatable but axially movable on this sleeve is a bevel gear I8» which provides a driving me» dium for the sleeve l1 and consequently the tool Referring more particularly to the accompany 40 It. A bearing pin l9 and a spring 20 provide a meduim constantly tending to yieldably urge the ‘ ing drawing, 10 indicates a machine or device for tool It into cutting or grinding contact with the surfacing or facing the valve seat of a triple valve seat. valve. This slide valve seat is indicated, by » It is necessary, however, that the outward or broken lines at H in Fig. 3 and the bore of the triple valve is indicated by broken lines at Ila 45 feeding travel of the tool 16 toward the Work be limited, as will be apparent to those skilled in the in ‘Fig. 3. As is well known, the slide valve seat of a triple art. I accomplish this by means of a bifurcated valve is of a uniform width and is substantially wedge 2| which engages the underside of a col rectangular and extends throughout the entire bar 22 ?xed on the sleeve ll. Obviously. by ref length of the‘ bore of the triple valve body. In . rence to Figs. 1 and 3, adjustment of this wedge resurfacing, of course, the ends" of this bore are toward and away from the axial center of the open. It is essential for proper operation of the sleeve l'l will regulate the amount of axial move valve that the entire surface of the slide valve ment in an outward direction of the tool It. The seat lie in the same plane. wedgeall is ?xed on a square adjuster rod 23 which In constructing a triple valve broached grooves the rotary tool carried by theydevice. 2,402,775 3 extends longitudinally and centrally of the frame from one end of the slide valve seat to the other end. It is essential that this precise stroke be The adjuster rod 23 is guided in guides 24 in maintained; that is, one end of the stroke will the frame so that it may reciprocate but cannot be when the center of the tool I6 is at one end rotate. At its outer end the adjuster rod 23 is of the slide valve seat and the other end of the turned and threaded as at 25 and is threaded into Cl stroke will be when that center reaches the other a feed nut 26 rotatably mounted in a bushing 21 end of the slide valve seat. ?xed in the handle 15. The feed nut 26 is col For this purpose it may be desired to provide lared against endwise movement by ?xed collars adjustable stops'_35 onrthej frame l4‘; ~ Obviously, 28 at its inner end and a ?xed knob 29 at its 10 such stops may be adjusted to the exact length I4 toward one handle I15. outer end. Consequently, by turning the knob 29, of the slide valve seat, and when secured on the the feed nut 26 will be rotated causing axial, frame l4, they will allow the operator to re movement of the adjuster rod 23 in a. direction ' ciprocate the device H) so that the stops alter depending upon the direction ‘of turning? move~ - nately engage the ends of the triple valve body. ment of the knob 29. The knob 29 may be cali 15 As the stops form no part of my present inven brated, as illustrated, so that the operator can tion, they are not illustrated in detail as it is be determine the amount of endwise movement im I lieved that the provision thereof would be obvious parted to the rod 23 and consequently'the amount ‘ to any one skilled in the art. of axial movement permitted the tool 16 toward". ' It is seen that after the high spots of the seat the work. I are removed, the operator may, if desired, con From the above description it is obvious that 20 tinue “re-facing the seat by adjustment of the knob 29 which will result infurtherv feeding‘ of the tool It. The amount’, of the 'additional'cut may be determined by the operator through"the the sleeve ll carrying the tool l6 may move axially independently of the gear I8, but it is at all times in driving relationship thereto. This is due to the fact that key pins lr8a are ?xed in calibrations on the knob 29. 7' ‘ ' ' . the hub of the gear 18 and engage slots l8b 25 From the foregoing it is obviousthatlhave formed in the sleeve ll. This arrangement obvi provided a very simple'and e?icient device'for ously permits a limited amount of‘ relative move re-surfacing the face of the slide valve seat 'in ment of the sleeve H with respect to the gear a triple valve. Also, it is manifest thatv the de; 18 without disturbing the driving connection 30 vice can be employed for expeditiously and effi therebetween. ciently re-surfacing such a seat and that itv can To drive the gear l8 and, consequently the cut ter [6 through the sleeve H, a drive pinion 30 is in mesh with the gear l8. beoperated to accomplish such purpose without This pinion 30 is » fixed on a drive shaft 3i which extends longi tudinally and centrally through the adjacent end of the frame l4 and through the handle 15 there of. This drive shaft 3! is suitably journaledv in the frame l4, as illustrated. At the outer end the services of a highly skilled technician. , While Irhave shown the preferred form of my 35 invention, it is to'be' understood that’ various changes may be made in its construction by those skilled in the art without departing fr'o'm'ithe spiritof the invention as de?ned in the appended claims. ‘ ' ,' , > f f ’ of the drive shaft 31 it is ?tted with a universal 40 Having thus? described my. invention,‘ what‘ 'I joint or coupling 32 by means of which it may claim and desire to secure by Letters Patent is: I; becomiected to a ?exible shaft 33, which in turn may be connected to a source of driving power, such as a motor or other prime mover. 1. A device of the character described com prising’ an elongated frameadapted'to be pro: jected through a triple valve body; ?xed‘ guide In order to properly feed the tool l6 along 45 means at opposite sides of the frame adapted "to the slide valve seat II to re-surface the same ride in and engage the grooves lat’lbpposite sides so that its entire surface will lie in a correct plane, elongated guide members 34 are ?xed at of the. slide valve seatof the triple valve. body whereby’the' frame may, beguided thereby, for reciprocation through the body ilia ?xed. path each side of the frame 14 and project below the ‘ same and below the tool l6, as illustrated. The 50 relative to the slide valve. seat, a rotary ftool spacing of these guide members is suchthat they carried by the frame at the side thereof t'oih'ave will engage the bottoms of the grooves 12 at the its ?at outer face engage the slide'val've seat sides of the valve seat ll, and by such engage when said guides are engaged with said grooves; ment will enable the entire device in to bere means carried by the frame .for impartingwa ciprocated in a plane exactly parallel to the 65 rotary drive to said tool as the ‘frame is recipro correct plane of the valve seat II. cated through the bodyto enable‘ said tool ‘to oper In operation of the device, it is constructed ate on said slide valve seat throughout itsv entire and assembled as shown in the drawing. The length. ' v ' ‘ f 1'. operator then determines the low spot in the 2. A device of the character described eom'; valve seat and adjusts the outward limit of 60 prising an elongated frame adapted to ,be".i)_ro—’ the cutting tool 16 to that point. The device i0 is then projected through the bore of the triple valve body with the guides 34 engaged with the means at opposite sides of the frame ‘adaptedfto ride in and engage. the grooves at opposite sides grooves I2. The power is then turned on to drive of the slidevalveseat of'the triple ‘valve body jected through a triple valve‘body, ?xed guide the tool l6, and the operator reciprocates the 65 whereby the frame may be guided thereby" for reciprocation through the ‘body in a?xed. path entire device through the bore of the triple relative to the slide valve seat, a rotarytocl valve, maintaining the guides 34 in engagement carried by the frame at-the side thereof to have with the bottoms of the grooves l2. During this its _?at outer face "engage .':the' slide valve'seat time the spring 20 will yieldably urge the, tool [6 into cutting engagement with theseat, and 70 when said guidesare engaged with said grooves, means for yieldablyurging the. facelof-"said' tool as the device is reciprocated, the re-surfacing or re-facing will be effected. In so doing, .it is necessary that the operator reciprocate the tool an amount that the center of the tool Willmove into, operative. engagement with said slide ' valve seat; means carried by the frame forjmpartinga rotary drive to said tool asthe frame isrecipro cated through the body _;to; enable?ysaid' t0Q1‘_to 2,402,775 5 4. A device of the character described com operate on said slide valve seat throughout its entire length. prising an elongated frame adapted to be pro jeoted through a triple valve body, ?xed guide means at opposite sides of the frame adapted to ride in and engage the grooves at opposite sides of the slide valve seat of the triple valve body whereby the frame may be guided thereby for reciprocation through the body in a ?xed path ‘ 3. A device of the character described compris ing an elongated frame adapted to be projected through a triple valve body, ?xed guide‘means at opposite sides of the frame adapted to ride in and engage the grooves at opposite sides of the slide valve seat of the triple valve body where by theframe, may be guided thereby for recipro cation, through the body in a“ ?xed path relative to‘the slide valve seat, a rotary tool carried by the frame at the side thereof to have its flat Ill relative to the slide valve seat, a rotary tool car ried by the frame at the side thereof to have its ?at outer face engage the slide valve seat when said guides are engaged with said grooves, means outer face engage the slide valve seat when said guides are engaged with said grooves, means for for yieldably urging said tool in the direction of said seat so that it will yieldably and operatively yieldablyi urging‘said tool into operative engage~ ment with said seat, means forlimiting the move merit of said tool in the-direction of the seat, engage said seat, means carried by the frame for means carried bythe frame for’ imparting a ro tary drive to said tool as the frame is recipro cated through the body to enable said tool to op erate“ on said slide valve seat throughout its entire length, - adjusting the amount of movement permitted said tool in the direction toward said seat, means carried by the frame for imparting a rotary drive to said tool as the frame is reciprocated through the body to enable said tool to operate on said slide valve seat throughout its entire length. JAMES R. RICKETTS.