Improvements in Valve Re-seating Machines.
Year: 1897

page_text: Date of Application, 29th Sept., 1897-Accepted, 24th Dec., 1897
COMPLETE SPECIFICATION.
Improvements in Valve Re-seating Machines.
I, CHARLES LAFOREST MORSE, of Athol, in the County of Worcester, and State
of Massachusetts, United States of America, Gentleman, do hereby declare the
nature of this invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement.
My invention relates to improvements in machines for re-facing the surfaces
of valves and discs, although a part of the machine may be used for re-surfacing
the valve-seat in a valve-shell.
The leading thought of my present invention is to provide an improved cutter-
mechanism especially adapted for service in truing the surface of a valve or uisk.
Another part of the invention relates to an automatic feed mechanism to adjust
the cutter to compensate for the material removed from the surface of the valve
or disk under treatment.
Another object of the invention is to provide an improved construction and
arrangement of parts whereby the machine may be held firmly in position in a vise
while the operative elements of the machine are free to move as required in the
practical service of the machine.
A further object of the invention is to enable the cutter mechanism to be em-
ployed at different angular positions with relation to the work so as to give the
latter any desired bevel or angle.
A further object of the invention is to simplify the construction and enable the
parts to be held rigidly in position while permitting their ready assemblage and
disconnection as necessity may require.
To the accomplishment of these ends, my invention consists in the novel com-
bination of elements, and in the construction and arrangement of parts, as will be
hereinafter fully described and pointed out in the claims.
To enable others to understand my invention, I have illustrated the preferred
embodiment in the accompanying drawins, forming a part of this specification,
and in which :-
Figure 1 is a perspective view showing the machine adjusted for service for re-
surfacing the seat of a valve.
Figure 2 is a vertical longitudinal sectional elevation taken centrally through
the machine.
Figure 3 is a detail perspective view of the standard, the cutter-spindle, its
holder, and the cutter.
Figure 4 is a detail view of the holder for the cutter-spindle.
Figure 5 is a detail perspective view of the holder-clamp for the feed dog, and
Figure 6 is a detail sectional elevation through the parts shown by figure 5.
Figure 7 is a sectional elevation of part of my machine showing it applied to
a valve-shell for the purpose of re-surfacing the seat therein, and
Figures 8 and 9 are detail views of cutters which may be used in connection
with the machine when it is adjusted for service in the manner shown by Figure 7.
Like numerals of reference denote corresponding parts in all the fingers of the
drawings.

page_text: The main
1 designates the main spindle of the machine, and this spindle is adapted to carry
one or more chucks according to the use to which the machine is nut.
or primary chuck 2, is employed in connection with the main spindle 1, under
all conditions of service of the machine, whether it is used for re-surfacing valves
or disks, or for re-surfacing the seats of valve-shells. Said main chuck 2, is pro-
vided with a series of shouldered or stepped jaws 3, and with these jaws is oper-
atively connected an adjusting ring 4, for the purpose of moving the jaws radially
to expand or contract them as may be required. The stepped or shouldered parts
of the radially-movable jaws of the chuck 2, are screw threaded to enable said jaws
to be screwed into the shells of valves when the machine is to be used for re-
surfacing the valve-seats in said shells; and this construction of the chuck provides
a means whereby the machine may be held on valve-shells of different sizes.
The solid back of the main chuck 2 is provided with a projecting tube 5, forming
a bearing for a spindle 1, one end of which extends through the centre of the
chuck 2. This extended tube 5, of the chuck is made smooth externally, and on
it is fitted an external tube or sleeve 6, which is adapted to be clamped to said
chuck-tube to provide for quick adjustment of the main spindle and which sleeve
is operatively connected with the extremity of the spindle for the purpose of
securing a fine adjustment of the spindle. The tube of the chuck terminates within
said sleeve at a suitable distance from the distal end thereof, and said sleeve
is divided or split for a part of its length near each end, as indicated at 7, and
provided with lugs 8, through which pass the clamping screws 9, which may be
tightened to compress the sleeve 6, and cause it to tightly grip the chuck-tube
in order, that the sleeve may be held rigidly in place on the chuck-tube by fric-
tional contact or engagement therewith. The distal end of the sleeve has an internal
screw-thread for a part of its length, and in this sleeve is screwed a short supple-
mental sleeve or connector 10, which is externally screw threaded to enable it to
be engaged with the internally-threaded part of the sleeve G. The extremity of
the main spindle 1, is extended through the chuck-tube, the sleeve 6, and the
connector sleeve 10; and this extremity of the main spindle is of square or
polygonal form, to enable it to be attached to the connector-sleeve 10, and to a
hand wheel 11. This hand wheel 11, is held in place by a nut 12, screwed on a
threaded axial tenon of the main spindle, and thus the hand wheel is attached to
the spindle for the purpose of rotating the latter within its bearing in the chuck-
tube. The sleeve 6, is operatively connected with the main spindle by means of
the connector sleeve 10; and said sleeve 6, may be adjusted on the chuck-tube
very quickly when its clamping screws are released, while the connector-sleeve 10,
may be screwed into the sleeve 6, for the purpose of giving to the main spindle
a fine adjustment within the chuck-tube and the sleeve 6. For the purpose of
adjusting this connector-tube within the sleeve 6, I have provided said connector
sleeve with a milled-head 10%, and with radial apertures in said head to receive
a turning pin, as will be readily understood.
The inner end of the spindle 1, is provided with an externally-threaded tenon 13,
upon which may be mounted and attached a cutter when the machine is to be
attached to a valve-shell for the purpose of resurfacing the seat therein, and in
figures 8 and 9 I have shown forms of cutters suitable for use in re-surfacing flat-
faced valve-seats, and for bevel or inclined valve-seats. Either of these cutters
may be used, as they are interchangeable at will, and the cutters may be of the
required size to enable the machine to re-surface the seats of valves of different
diameters.
My improved machine is especially well adapted for use in re-surfacing the
faces of valves and for other kinds of disks, and in figures 1 to 5-inclusive I have
shown the parts of the machine which I employ in connection with the mechanism
heretofore described.
In connection with the main spindle 1, an extension 15, is employed one end
of said extension being provided with an internally threaded socket to screw upon
the tenon 13, of the spindle 1, whereby the extension is aligned with, and attached

page_text: rigidly to, the spindle to form practically a part of the same. This extension of the
spindle carries a work-holding chuck 16, of any suitable construction, and said
chuck and the spindle-extension are attached together in any suitable manner.
17 designates a standard which is adapted to carry the operative parts or elements
of the machine; and this standard is constructed in a manner to enable it to be
held in a vise for supporting the machine rigidly and steadily in position. I cast
the standard 17, in a single piece of metal so as to form a flanged foot 18, a trans-
verse bearing 19, and a guide-head 20. The flanged foot 18, at the lower end of
the standard is quite broad and enables the standard to fit properly in the vise to
hold the machine rigidly in place. The transverse-bearing 19, is situated at a
point between the terminals of the standard, and said bearing may be lined with
a suitable material for the accommodation of the spindle and to enable it to turn
freely therein. The standard around the journal-bearing is enlarged in disk-like
form, and in this enlarged part of the standard around the journal bearing therein
is provided a series of radial notches or recesses 21, which provide seats for the
jaws of the main-chuck 2, whereby the chuck is adapted to hold the main spindle 1
and its associated parts in the standard 17. The head 20, at the upper extremity
of the standard is arranged at right angles to the length of the standard, and
said head is flanged to form a guide way for the holder of the tool-stock and its
spindle, as will be presently described.
In assembling the main spindle and chuck, and the parts associated therewith,
in operative relation to the standard 17, the spindle is passed through the journal
bearing 19, to bring the main chuck 2, in close relation to the standard. The
jaws of the chuck are now contracted or moved inward until they enter the radial
seats 21, in the standard, and thus the main chuck is detachably fastened to the
standard in a manner to hold the chuck-tube, the sleeve, the connector sleeve, and
the spindle in the proper horizontal position on the standard. The spindle ex-
tension may be attached to the spindle 1, before the latter is adjusted in the
bearing of the standard, or said extension with the auxiliary work-holding chuck
mounted thereon may be attached to the main spindle after the latter has been
adjusted in the standard.
The work holder for the cutter of the machine adapted for re-surfacing valves
or disks is indicated at 23 in the drawings. This holder 23, is cast in a single
piece to provide a shank 24, and a sleeve 25. The sleeve 25, may be arranged
at any suitable angle with relation to the shank of the holder according to the
bevel or inclination it is desired to give to the surface to be trued, or said sleeve
may be in a plane at right angles to the length of the shank as shown by the detail
view, figure 4. The shank 24, of the holder is fitted snugly upon the head 20, of
the standard, and said shank is provided with a pendent guide 26, which is fitted
to slide in the guide-way formed in said head 20. This shank is further provided
with a longitudinal slot 27, and through it passes the binding screw 28, which
.hds a bearing in the standard 17. This construction enables the tool-holder to
be clamped rigidly to the standard, and also provides for the adjustment of said
holder to project the tool more or less beyond the standard so as to bring the tool
in proper relation to the work carried by the chuck on the spindle-extension. The
sleeve 25, of the holder 23, is divided at its upper side and provided with lugs to
receive the tightening screws 29, which serves as the means for tightening the
divided holder-sleeve upon the tubular stock of the cutter mechanism.
The tubular stock 30, is fitted snugly in the divided sleeve 25, and this stock is
adjustable longitudinally in said sleeve of the holder. At the lower end of the
tubular stock is provided an annular groove or channel 31, and in the stock is
provided a longitudinal slot 32. Through the tubular stock passes an externally
threaded feed spindle 33, the lower end of which carries one or more cutter-tools 34:
and said threaded feed spindle is guided by means of a guide screw or stud 35,
which is rigid with the feed spindle and which fits in the slot 32, of the tubular
stock, so as to limit the feed spindle to endwise movement in the tubular stock.
On the lower grooved end of the tubular stock is mounted an adjusting nut 36,

page_text: which is operatively connected with the threaded feed spindle. This nut 36, has
two openings therein of different diameters, the large opening being smooth in-
ternally, while the small opening has an internal thread. The large opening of
the feed nut is fitted on the grooved smooth end of the tubular stock, and through
the nut passes a pin or screw 37, which fits in the annular groove or channel
of the tubular stock, whereby the nut is swiveled on the tubular stock to be free to
turn or rotate thereon. The small threaded opening of the nut receives the
threaded feed spindle, and when this nut is turned or rotated in one direction, it
serves to move the feed spindle and the cutters toward the work, while a reverse
movement of the nut moves the feed spindle and the cutters away from the work.
In connection with the main spindle and the feed mechanism for the cutters, I
have provided a means for automatically rotating the nut a sufficient distance to
feed the cutter in proportion to the material removed from the valve or disk at
each rotation of the main spindle. To this end, the feed nut is provided with a
series of radial fingers 38, which are attached rigidly to said nut and which project
therefrom a suitable distance to be presented succesively to a feed dog which is
carried by the main spindle 1, or the extension thereof. This feed dog is in the
form of a pin or stem 40, and it is mounted adjustably in a carrier 41, constructed
for application to the spindle 1, or its extension. This carrier 41, is provided with
a split collar 42, having a clamping screw 43, by which the collar may be clamped
rigidly to the spindle; and said carrier is provided with a head 44, which is
threaded internally to receive the clamping screw 45. The stem or pin forming
the feed dog is fitted in an adjustable disk or washer 46, which is applied laterally
against one side of the head of said carrier; and through a central opening in said
disk or washer passes the shank of the headed screw 45, which operates to firmly
clamp the disk or washer in an adjustable manner on the carrier 41. This disk
or washer 46, is also provided with an opening 47, to receive one end of the stem
forming the feed dog, and said stem clamped adjustably between the carrier-
head and the disk, as shown, or in the disk or washer by a set screw that finds a
bearing in the washer and impinges against said stem. This construction of the
carrier enables the feed dog or stem to be adjusted on the carrier-head to occupy
different angular positions with relation to the spindle 1, for use in connection
with holders 23, which present the cutter mechanism at different angles to the work
held in the supplemental chuck; and said stem forming the feed dog may also
be extended or retracted more or less in the disk or washer on said carrier to
compensate for the variation in the position of the cutter mechanism with relation
to the work.
It will be understood that I may employ holders 23 having the sleeves 25,
arranged at different angles in order to present the cutters at different angles to
the work according to the bevel or inclination which is to be given to the valve or
disk or if desired the holder 23, may have a sleeve, the axis of which is in a plane
at right angles to the shank of the holder in order to present the feed spindle in a
vertical position to the work in the chuck carried by the extension spindle.
When the machine is to be used for re-surfacing the seat in a valve shell, the
main chuck is adjusted to engage with the threaded part of the valve-shell, and a
cutter is attached to the tenon on the spindle 1. The machine is thus supported
on the valve-shell in a stationary position, but the spindle may be rotated, by
turning its hand wheel, to impart rotary motion to the cutter thereon in order to
re-surface the valve seat. The adjustable sleeve 6, provides for a quick adjustment
of the spindle to, or from, the work, and the threaded connector sleeve enables
the spindle to be fed up to the work as may be required.
To true up or re-surface a valve or disk, the machine is assembled as shown by
figures 1 and 2 so as to have its operative elements mounted in the standard 17,
and said standard is held rigidly in place, preferably by attaching it in a vise..
The work is clamped in the supplementary chuck, and the cutter is adjusted to the
surface of the work to be treated. As the spindle is turned, the work moves with
it and is thus subjected to the cutter. When the spindle makes a complete turn, the

page_text: feed dog strikes one of the fingers of the nut, and the latter is given a partial turn
to advance the feed spindle and the cutter a distance equivalent to the thickness of
the material removed from the work; and thus the cutter is fed or advanced simul-
taneously with the finishing of the face of the work in order that the cutter may
always remain in operative relation to the work.
I am aware that changes in the form and proportion of parts, and in the details
of construction herein shown and described as the preferred embodiment of my
invention may be made by a skilled mechanic without departing from the spirit,
or sacrificing the advantages of the invention; and I, therefore reserve the right
to make such modifications and alterations as fairly fall within the scope of the
invention.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
1. The combination of a main spindle, a chuck having jaws for attachment
thereof to a valve shell, an adjustable sleeve clamped on an extension of said chuck,
and a connector sleeve connected to said spindle and screwed into the adjustable
sleeve, as and for the purposes described.
2. The combination of a main spindle, a chuck having radial jaws and a smooth
tube, a divided sleeve clamped frictionally upon the tube of said chuck and
provided with a threaded socket at one end, and an externally threaded connector
sleeve screwed in said divided sleeve and attached to the spindle for the purposes
described, substantially as set forth.
3. The combination of a standard, a main spindle journaled therein and carrying
a work-clutch, and a feed mechanism carrying a cutter to be presented to the
work in said chuck, as and for the purpose described.
4. The combination of a standard, a main spindle carrying a work-clutch, a
cutter-carrying feed mechanism, and mechanism between said spindle and the
feed mechanism to actuate the latter automatically as the main spindle is turned,
as and for the purposes described.
5. The combination with a work-carrying spindle, of a standard in which said
spindle is journaled, a feed mechanism carrying a cutter, and a holder mounted
on said standard and having the cutter and its mechanism mounted therein, as and
for the purposes described.
6. The combination of a standard, a spindle mounted therein, a chuck on said
spindle and connected with the standard to hold the spindle feed devices in operative
relation to the standard, a cutter, and means for advancing the cutter to the work
carried by said spindle, as and for the purposes described.
7. The combination of a standard having radial seats, a main spindle, a chuck
on the spindle and having its jaws engaging with the seats in the standard, a
cutter and feed mechanism for said cutter, as and for the purposes described.
8. The combination of a standard, a spindle having a work-chuck, a feed spindle
carrying a cutter which is presented to the work in said chuck, a holder in which
the feed spindle is mounted, and mechanism for actuating the feed spindle as the
main spindle is rotated, as and for the purposes described.
9. The combination with a main spindle carrying a work-chuck, of a cutter, a
feed mechanism therefor, and a feed dog carried by the main spindle and arranged
to actuate the cutter feed mechanism as and for the purposes described.
10. The combination with a main spindle carrying a work-chuck, of a tubular
stock, a feed spindle mounted therein and carrying a cutter, a rotary nut opera-
tively connected with said feed spindle and said stock, and means for actuating the
nut, as and for the purposes described.
11. The combination with a main spindle carrying a work-chuck, of a tubular
stock, a threaded feed-spindle limited to endwise movement in said stock, a cutter
carried by said feed spindle, and a rotary nut swiveled on the stock and having
a threaded engagement with the feed spindle, as and for the purposes described.

page_text: 12. The combination,with a main spindle carrying a work-chuck, of a standard,
a holder mounted detachably on said standard, a tubular stock removably and
adjustably clamped in said holder, a feed spindle movable endwise in said tubular
stock, a cutter on said spindle, and mechanism for moving the feed spindle endwise,
as and for the purposes described.
13. The combination with a work-carrying spindle, a cutter, and a feed
mechanism for said cutter, of a carrier attached to said spindle to rotate therewith,
and a feed dog adjustably mounted in said carrier, as and for the purposes
described.
14. The combination with a main spindle carrying a work-chuck, a cutter,' and
a feed mechanism for said cutter, of a feed dog carrier clamped on the main
spindle to rotate therewith, an adjustable disk or washer clamped on said carrier,
and a feed dog adjustably mounted in said disk or washer for the purposes described
substantially as set forth.
15. The combination with a standard, and a main spindle having a work-clutch,
of a holder detachably mounted on said standard and interchangeable with other
holders having means for sustaining a cutter mechanism at different angular
position with relation to said clutch, a cutter and feed mechanism therefor mounted
on said holder, and an adjustable feed dog carried by the main spindle, for the
purposes described, substantially as set forth.
16. A standard provided at a point intermediate of its length with a journal
bearing and with radial seats, and having at one end a guide-head, combined with
a main spindle fitted in said journal bearing, a chuck having its jaws fitted to the
radial seats of the standard and serving as a support for the feed mechanism of
said main spindle, a holder detachably mounted in the guide head of the standard,
a cutter, a feed mechanism for said cutter and mounted in said holder, and
meekanism between the main spindle and the cutter feed mechanism to actuate the
latter, as and for the purposes described.
Dated this 29th day of Sentr 1897
BOULT & WADE
Agents for the Applicant.