Improvements in Machines for Reseating Valves.
Year: 1891

page_text: Date of Application, 31st July, 1891-Accepted, 12th Sept., 1891
COMPLETE SPECIFICATION.
Improvements in Machines for Reseating Valves.
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 :-
This invention relates to machines for dressing and resurfacing the valves and
valve-seats of globe-valves, faucets and the like, and it has for its object to
construct a machine of this class by means of which the valves and seats may be
resurfaced in an absolutely perfect and true manner thus enabling the valves to fit
as closely and tightly as when new.
My invention consists of a rotary tool for dressing the valve-seat, combined with
mechanism for feeding the said tool, for holding it steady during operation, and
for clamping it onto the casing of the valve or faucet the seat of which is to be
operated upon.
The invention further consists in the combination with the said tool of a device
for dressing and resurfacing tapering valves.
The invention further consists in certain improvements in the cutters for dressing
flat and tapering seats.
The invention further consists in the combination with the turning tool or
holder of an attachment for holding various kinds of tapering valves while being
dressed.
The invention finally consists in certain improvements in the construction and
arrangement of details which will be hereinafter fully described and particularly
pointed out in the claims.
In the drawings
:-
Fig. 1 is a vertical sectional view of the turning tool showing it applied in
position for operation.
Fig. 2 is a side elevation with dotted lines showing the extension rod upon the
spindle.
Fig 3 is a top plan view.
Fig. 4 is a side view of the apparatus showing it provided with the attachment
for holding valves while being dressed.
Fig. 5 is a perspective detail view of the valve dressing attachment.
Fig. 6 is a vertical sectional view showing the turning tool combined with the
valve dressing attachment in position for operation.
Fig. 7 is a detail view of the extension-rod for the rotating spindle.
Fig. 8 is a detail view of the spanner for adjusting the chucks and the exten-
sion-rod.
Figs. 9 and 10 are detail views of two forms of cutters used in connection with
my invention.
Fig. 11 is a detail sectional view taken on the line 11-11 in Fig. 6.
Like numerals of reference indicate like parts in all the figures.
1 designates a chuck having radially-adjustable jaws 2, the inner sides of which
are screw-threaded as at 3, and the outer sides of which are provided with series
of steps 4 which are likewise screw-threaded in order that the said chuck may
engage the threads of interiorly or exteriorly-threaded faucets or valve-casings to
which the device is to be applied for operation. The said chuck is to be constructed
preferably with the peripheral ring 5 having a spiral flange or worm engaging the
jaws 2, which by turning the said ring may be simultaneously adjusted towards or
from the centre of the chuck.

page_text: The solid back 6, of the chuck is provided with an upwardly extending exteriorly
screw-threaded tube 7 forming a bearing for the spindle 8, the lower end of which
extends through the chuck. 9 designates a tube, the upper end of which has a
hand-wheel 10 and the lower end of which has an interiorly screw-threaded
portion 11, engaging the exteriorly threaded tube 7 upon which it is mounted. The
lower end of the tube 9 is provided with vertical slots 12 and it has a tapering and
exteriorly-threaded portion 13, upon which a tightening-nut 14 is mounted.
The spindle 8 is provided near its upper end with a shoulder 15 forming a
bearing for the hand-wheel 10 of the tube 9. Suitably keyed upon the spindle,
above the said hand-wheel, is a hand-wheel 16, the rim of which is provided with
recesses 17 to afford a firm hold for the hand of the operator.
The spindle is provided above the hand-wheel 16 with a nut 18 which serves
partly to hold the said hand-wheel in position upon the spindle and also to enable
it to be forced downwardly for the purpose of taking up slack which may be caused
by wear upon the said spindle.
The lower end of the spindle 8 is provided with an exteriorly screw-threaded
stem 19, upon which a cutting tool may be mounted as will be presently more fully
described.
I desire here to state that it is the intention to make the screw-threaded tube 7,
the tube 9, mounted thereon and the spindle 8 as short as is compatible with perfect
efficiency of the device; this is for the purpose of enabling the apparatus to be
used for the purpose of dressing valve-seats in any place where a valve may be
found without necessity for removing the valve-casing from its connections.
For the purpose of enabling the apparatus to be used for dressing the seats of
large valves where the valve-seat is too far removed to enable the short spindle to
reach it, I avail myself of an extension 20 which may be readily mounted upon the
lower end of the spindle and which has a transverse perforation 21 to receive the
end of a spanner by means of which it may be tightened. This spanner which is
designated by 22 consists of a rod having a downturned end 23 which is flattened
to form a screw-driver. This spanner is likewise useful to operate the periphery
ring of the chuck which is provided with recesses 24 for the reception of said
spanner.
25 designates a chuck which is constructed substantially like the chuck 1 and is
provided with radially adjustable jaws 26, the lower ends of which are threaded
interiorly and exteriorly to enable the said jaws to hold differently constructed
valve-disks which are either provided with stems such as 27 or with interiorly
screw-threaded recesses.
The back-plate of the said chuck is provided with a screw-threaded recess 29 by
means of which it may be adjusted upon the lower end of the spindle 8, or upon
the extension 20 of the said spindle which is provided at its lower end to the screw-
threaded stem 30. This supplemental chuck is used in connection with the attach-
ment for dressing valve-disks which has been shown in Figs. 4, 5 and 6 of the
drawings. Said attachment consists of a solid or skeleton casing 31 having a
conical extension 32 provided with a longitudinal slot 33 adjacent to which is
formed a seat 34 upon which a cutter 35 is mounted adjustably by means of
screws 36 and 37, the former of which extend through slots 38 in the said cutter
while the latter are inserted into the shoulder or seat 34 with their heads bearing
against the outer edge of the cutter which latter may thus be very accurately
adjusted and securely held in position for operation. The lower end of the conical
extension 32 of the shell or casing 31 is provided with an opening 39 through
which the valve-stem may extend when a valve having a stem is being operated
upon. The upper edge of the casing 31 is interiorly screw-threaded as shown at 40
for the attachment of the chuck 1 of the turning tool, the jaws of which chuck
may be expanded radially so as to engage the said screw-threaded portion of the
shell or casing, which latter may thus be very firmly connected with the chuck of
the turning tool.
The casing 31 or the tapering portion 32 of said casing is provided with an

page_text: exterior rib 41 by means of which it may be securely mounted in a vice for
operation.
In Figs. 9 and 10 of the drawings I have shown two forms of cutters for
dressing respectively flat and beveled or tapering valve-seats. The cutter shown
in Fig. 9 which is designated by 42 is for the purpose of dressing flat valve-seats
and it consists of a flat bar having a central screw-threaded perforation 43 and
provided on opposite sides of the said perforation with oppositely inclined longi-
tudinal parallel teeth 44. In cutters of this kind as heretofore constructed the
teeth have usually been made to radiate from the center. While this construction
is very suitable for cutters that I use for dressing small surfaces, it is not
desirable for dressing larger valve-seats for the reason that the teeth are caused
to act not only simultaneously, but with a straight radial movement which is apt
to cause the material that is being operated upon to crack or chip off. By
arranging the teeth as herein described, longitudinally and parallel to each
other they will operate with a sweeping movement that will cause the surface
of the material that is being operated upon to be shaved off easily and
accurately.
Again, the cutters being made comparatively narrow or in the form of oblong
bars, as herein described may be much more easily operated than the circular disks
which are usually employed.
A similar principle has been applied to the construction of the cutters 45,
a specimen of which has been illustrated in Fig. 10 of the drawings and
which are used for the special purpose of dressing beveled or tapering valve-
seats. This cutter is likewise composed of a comparatively narrow oblong bar
having beveled ends 46 which may be extended so as to form the wings 47 and
which are provided with the teeth 48.
My invention being adapted to be operated by hand only, these cutters are
especially advantageous for dressing the seats of large valves which it would be
difficult otherwise to operate upon.
The operation of this invention and its advantages will be readily understood
from the foregoing description taken in connection with the drawings hereto
annexed by those skilled in the art to which it appertains.
When the machine is to be used for dressing valve-seats, the cutter is mounted
upon the lower end of the spindle or upon the extension of said spindle as the case
may be and the device is then mounted by means of the clutch 1 upon the casing
of the valve or faucet which is to be operated upon. By loosening the nut 14 the
spindle may be readily adjusted by manipulating the tube 9 until the cutter reaches
the valve-seat which is to be dressed; the nut 14 may then be tightened thus
retaining the parts of the device in the desired relative position without, however,
interfering with the adjustment of the spindle by means of the tube 9 as the
cutting progresses.
When valve-disks are to be dressed or resurfaced the auxiliary clutch is mounted
upon the lower end of the spindle and the valve or disk which is to be operated
upon is mounted in the said clutch. The machine is then mounted by means of the
clutch 1 in the casing 31, and the latter may then be mounted in a vice where it
will be held securely during the operation. The spindle carrying the auxiliary
clutch and the valve-disk is then adjusted until the said valve-disk engages the
cutter 35 and the spindle may then be revolved by means of a hand-wheel 16,
thus causing the surfaces of the valve to be trimmed by the said cutter, the spindle
being gradually fed forward by means of the hand-wheel 10 upon the adjusting
tube 9.
Additional cutters of suitable construction are to be provided for dressing faucets
of various constructions to the dressing or repairing of which my invention may
be applied.
I have in the foregoing described what I consider to be the preferred construction
of my invention but I desire it to be understood that I do not limit myself to the

page_text: precise details of construction herein set forth but reserve the right to any changes
and modifications which may be resorted to without departing from the spirit of my
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. In a machine for dressing valve-seats, the combination of a chuck having
adjustable jaws adapted to be clamped upon the valve-casing, and a revolving
spindle carrying a cutting-tool, substantially as set forth.
2. In a machine for dressing valve-seats, the combination of a chuck having
radially-adjustable jaws screw-threaded on their inner and outer sides, a tubular
standard mounted upon the said chuck, a screw-threaded sleeve mounted on said
standard, and a spindle journaled in the latter and having a cutting-tool at its lower
end, substantially as set forth.
3. In a machine for dressing valve-seats, the combination with a chuck having
radially-adjustable jaws screw-threaded upon their inner and outer sides of a
revolving spindle having a handle at its upper end, a cutting-tool mounted detach-
ably at the lower end of said spindle, and mechanism for feeding the latter in a
forward or downward direction, substantially as set forth.
4. In a machine for reseating valves, the combination of a chuck having radially-
adjustable jaws, screw-threaded at their inner and outer ends, a tubular standard
upon the upper side of said chuck, a sleeve mounted on said standard and having a
handle at its upper end, a stem or spindle having a handle at its upper end, and a
cutting-tool mounted detachably at the lower end of said spindle, substantially as
and for the purpose set forth.
5. In a machine for dressing valve-seats, the chuck having radially-adjustable jaws
to engage the valve-casing, the revolving spindle carrying the cutting-tool, and the
feeding mechanism to feed the spindle in a forward or downward direction, as set
forth.
6. In a machine of the class described the combination of a chuck, the back-
plate of which has an upwardly-extending exteriorly screw-threaded tube, a spindle
journaled in said tube and extending through the chuck, a hand-wheel mounted
upon the said spindle, and a tube engaging a shoulder near the upper end of the
spindle and having an interiorly threaded portion engaging the exteriorly threaded
tube upon which it is adjustably mounted, substantially as set forth.
7. In a machine of the class described, the combination of a chuck having an
upwardly-extending exteriorly screw-threaded tube, a spindle mounted revolubly in
said tube and having a hand-wheel at its upper end, an adjusting tube having a
hand-wheel at its upper end engaging a shoulder formed upon the spindle below
the hand-wheel of the latter, said adjusting tube being provided with
interiorly-threaded portion engaging the exteriorly threaded tube of the chuck,
and a tightening nut mounted upon a tapering exteriorly-threaded and longi-
tudinally slotted portion of the adjusting tube, substantially as and for the purpose
set forth.
an
8. In a machine of the class described, the combination with the chuck having
an upwardly-extending tube, of a spindle mounted revolubly in the said tube
and having a hand-wheel the rim of which is provided with recesses, and means
for adjusting the said spindle longitudinally, substantially as and for the purpose
set forth.
9. In a machine of the class described, the combination of a chuck having an
upwardly-extending tube a spindle mounted revolubly in said tube and having a
shoulder near its upper end, the adjusting tube mounted exteriorly upon the tube
extending from the chuck and having a hand-wheel engaging the shoulder of the
spindle, a hand-wheel mounted upon the latter above the hand-wheel of the
adjusting tube, and a nut mounted upon the spindle above the hand-wheel of

page_text: the latter and adapted to force the said hand-wheel in a downward direction to
take up slack caused by wear upon the spindle, substantially as herein shown and
described.
10. In a machine of the class described, the combination with the chuck having
a revoluble and longitudinally adjustable spindle provided at its lower end with a
screw-threaded stem, of an extension rod provided at one end with a threaded
recess to engage the said stem, and at its opposite end with a screw-threaded stem,
said extension-rod being provided with a transverse perforation, substantially as
and for the purpose set forth.
11. In a machine of the class described, the combination with a chuck having a
revoluble and longitudinally adjustable spindle extending between the radially-
adjustable jaws of said chuck, of an auxiliary chuck adapted to be mounted
detachably upon the lower end of the said spindle and having radially-adjustable
jaws, the lower ends of which are screw-threaded on their inner and outer sides,
substantially as and for the purpose set forth.
12. The combination with the chuck having a revoluble and longitudinally-
adjustable spindle, of an auxiliary chuck mounted detachably upon the lower end
of said spindle and a casing adapted to be engaged by and firmly connected with
the main chuck, said casing having a conical or tapering portion provided with a
longitudinal slot or opening and a cutter mounted adjustably in the said slot,
substantially as and for the purpose set forth.
13. In a machine of the class described, the herein described disk dressing
attachment, the same comprising a casing having a conical or tapering portion
provided with an exterior rib adapted to be mounted in a vice, a longitudinal slot
or side opening and a cutter mounted adjustably in the said slot, substantially as
set forth.
14. The disk dressing attachment comprising a casing having a tapering portion
provided with a slot or side opening and a seat formed adjacent to the said slot, in
combination with the cutter having transverse slots to receive screws by means of
which it is mounted upon the said seat and screws inserted into the outer side of
said seat and having heads bearing against the outer edge of the said cutter,
substantially as and for the purpose specified.
15. In a machine of the class described, the combination of a chuck having a
revoluble and longitudinally adjustable spindle provided with a hand-wheel and
means for feeding and longitudinally-adjusting said spindle, an auxiliary clutch
mounted detachably upon the lower end of said spindle, a casing interiorly screw-
threaded at its upper edge to be engaged by the radially adjustable jaws of the
main clutch and having a tapering or conical portion at its lower end provided with
a longitudinal slot or side opening and a cutter mounted adjustably in the said slot,
substantially as and for the purpose herein set forth.
16. In a machine of the class described, the combination with a chuck having
a revoluble and longitudinally adjustable spindle provided with a screw-threaded
stem at its lower end and means for feeding and adjusting the said spindle, of a
cutter adapted to be mounted detachably upon said spindle, said cutter consisting
of an oblong bar having a screw-threaded recess to engage said spindle and
provided on opposite sides of said recess with oppositely-inclined teeth, sub-
stantially as and for the purpose set forth.
17. The combination with the herein described machine comprising essentially a
chuck having a revoluble and longitudinally adjustable spindle provided with a
screw-threaded stem at its lower end, of a cutting tool consisting of an oblong bar
having a screw-threaded recess and provided on opposite sides of said recess with
longitudinal parallel and oppositely inclined teeth, substantially as and for the
purpose set forth.
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