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Патент USA US2406570

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Aug. 27, 1946'.
‘ ‘
. '
Filed Junej5, 1945
Jiffy/9 .D. Ask/‘((47.7
MM wit,‘
Patented Aug. 27, 1946
Ralph D. Sprung, Rosemead, Calif.
Application June 5, 1945, Serial No. 597,639.
1 Claim. (Cl. 51—237')
The present invention relates to new and use
ful improvements in grinding machines for fac
ing or re?nishing valves of internal combustion
engines and the like, and more particularly to a
holder for the valve embodying means for moving
the valve toward and away from a grinding wheel,
and also for adjusting the valve to different an
gles relative to the grinding wheel, to conform to
the angle of the seating face of the valve with
the axis of the valve stem.
An important object of the present invention
is to provide a valve holder of this character by
means of which the valve may be rotated during
byv a disc l5 welded or otherwise secured thereto
and welded or‘ otherwise suitably secured to‘the
disc is a wheel ll having a handle l8 for rotating
thesleeve in the holder.
To the other end of the sleeve I5 is secured a
conventional form of chuck l9 within'which a
valve stem 20 is secured, the valve stem having
the head 2! formed thereon, to be refaced by a
motor-driven grinding wheel (not shown) also a
10' mounted on the bench 8.
Threaded through the disc 16 is a screw "22
having an operating wheel 23 secured at its rear
end and having a head 24 at its front end formed
with a conical recess 25 adapted to receive the ,
its engagement with the grinding wheel.
Another object is to provide a device of this 15 inner end of the valve stem 20 for centering the
valve stem in the sleeve [5 and chuck IS.
character of simple and practical construction,
The sleeve l5 has aflange 26 suitably secured
which is e?icient and reliable in operation and
between the legs of the holder I3 and
relatively inexpensive to manufacture, easy to in
against which one end of a coil spring 21 is en
stall in operative position on a work bench in
gaged, the other end of the coil spring ‘bearing
front of a conventional form of electric grinder,
against the rear leg of the holder l3 to yieldably
and which otherwise is well adapted for the pur
‘ urge the sleeve l5 forwardly away from the grind
poses for which the same is intended.
ing wheel.
Other objects and advantages reside in the de
An adjusting screw 28 is threaded through the
tails of construction and operation as more fully
hereinafter described and claimed, reference be 25 rear leg of the holder IS with its rear end adapted
to abut the disc H5 at the rear end of the sleeve,
ing had to the accompanying drawing forming
the adjusting screw having a knurled manipulat
part hereof, wherein like numerals refer to like
ing wheel 29 for moving the rear end of the screw
parts throughout, and in which:
28 toward and away from the disc I6 to func
Figure 1 is a side elevational view with parts
broken away and shown in section.
30 tion as a stop for the forward movement of the
sleeve and to maintain the sleeve 15 rearwardly
Figure 2 is a rear elevational view.
with the beveled edge of the valve head 2| in en
Figure 3 is a fragmentary sectional view taken
gagement with the grinding wheel.
substantially on a line 3—-3 of Figure 2.
A leaf spring 30 attached to the rear leg of the
Referring now to the drawing in detail, where
l3 engages the wheel 29 of the adjusting
in for the purpose of illustration I have disclosed
screw to secure the latter in its adjusted position.
a preferred embodiment of the invention, the
The holder [3 and base ID are moved bodily to
numeral 5 designates an attaching plate for the
ward and away from the grinding wheel by means
valve holder secured to front and rear rails 6 by‘
of a lever 3| pivoted to one of the guides 9 by
means of set screws ‘I for lateral adjustment of
of a pin 32 and having a vertically extend
the plate, the rails 6 being secured to a work 40 ing slot 33 adjacent its pivoted end in which a
bench or the like 8 in a position adjacent a con
pin 34 carried by the base Ill is received, the
holder thus being moved longitudinally in the
(not shown).
I j
guide 9 by the manipulation of the lever 3|.
The plate 5 is formed with a pair of longitudi
To the upper portion of the base In is formed
nally extending, spaced-apart guides 9 between 45 a dial
plate 35 and to the under side of the holder
which an upstanding base I0 is slidably mounted,
I3 is secured a plate 36 having avpointer or indi
the base 10 having laterally projecting ?anges l I
ventional form of motor-driven grinding wheel
underlying the guides 9.
cator 31 at one edge thereof cooperating with the '
markings 38 on the dial plate 35 whereby to indi
Rising from the base It! is a bolt 12 on which
a U-shaped tool holder I3 is mounted for rota 50 cate the angle of adjustment of the holder l3 on
the base [0, so that the holder may ‘be adjusted
tion, the holder l3 being secured in adjusted po
on the bolt l2 and at di?erent angles in accord- "
sition by means of a wing nut I4 carried by the
ance with the angle of the valve head 2|.
In the operation of the, device, the screw 22 and
A sleeve [5 is slidably mounted in the legs of
the holder I3, the sleeve being closed at one end 55 head 24 are adjusted longitudinally in the sleeve
I 5 by the wheel 23 in accordance with variations
in length‘ of the valve stem 20 which is secured in
the chuck I9 at the front end of the sleeve.
The sleeve I5 is then slidably adjusted in the
holder I3 by the adjusting screw 28 to bring the
seating face of the valve head 2| into proper
Having thus described the invention, what I
A valve holder for use while refacing a valve
and including an attaching member, a pair of
spaced parallel guides on said attaching mem
ber, an upstanding basesslidably mounted in said
grinding relation with the grinding wheel.
As the seating face of the Valve head 2| is re
surfaced'byvthe grinding wheel, the valveliszro- *
guides, a, lever pivoted to one of the guides and
operatively engaged with the base for slidably
actuating the base, a U-shaped support pivotally
tated by the handle l8'and wheel I"! vattached to 10 mounted on the base‘ for horizontalswinging
the rear end of the sleeve for thus rotating the
movement, means for securing the support in
sleeve in the holder.‘
:pivotally adjusted position on the base, a, sleeve
' The valve holder l3 and base l0 maybe moved I’
bodily by th'e lever 3| in the guides '9 to move
the valve head 2| toward and away‘ from the
grinding wheel.
It is believed the details of construction; oper
ation and advantages of the device will be readily '
understood from the foregoing without further
While ‘I have ‘illustrated and described a pre
ferred construction for carrying out my inven
slidably and rotatably mounted in the support,
means at one end of the sleeve for securing a
valve stem ‘therein, an adjusting screw extend
ing longitudinally in the sleeve, a head at/the
‘inner-end of the screw" having a conical recess 7
adapted- to receive the inner end of the valve
stem to center the valve stem in the sleeve,
20 spring means between the support and the sleeve
for. urging the‘ sleeveforwardly in the-support,
an: adjusting screw ' between the sleeve’ and ‘ the
tion, it is apparent that various changes in con;
support for'limiting forward movement‘ of the
struction and arrangement of the parts may be
sleeve; and'a hand wheel at‘ the rear end; ofthe
made without departing from the spirit of the 25 sleevetfo-r'the manual rotation thereof.
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