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Патент USA US2402775

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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
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INVENTOR.
JAMES R. RICKETTS
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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.
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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-‘
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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.
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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.
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‘This invention relates to machine tools and
tory.
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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'
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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.
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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.
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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
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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,
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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.
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