Improvements in Machines for Refitting Valves and Cocks.
Year: 1891

page_text: Date of Application, 17th July, 1891
Complete Specification Left, 14th Apr., 1892-Accepted, 4th June, 1892
PROVISIONAL SPECIFICATION.
Improvements in Machines for Refitting Valves and Cocks.
I, CHARLES FRANKLIN HALL, of Skaneatles, in the County of Onondaga and
State of New York, United States of America, Manufacturer, do hereby declare
the nature of said invention for IMPROVEMENTS IN MACHINES FOR REFITTING
VALVES AND COCKS to be as follows:-
My invention relates to the class of machines which are employed for refitting
the valves and valve-seats of stop-cocks, globe-valves and analogous valves.
The object of this invention is to provide the cutting or abrading-tool with a
holder which shall permit said tool to be readily and accurately adjusted to the
bevel or taper of the valve and valve-seat to be refitted.
My improved tool for refitting valve-seats consists essentially of the arbor and
the cutting or grinding tools, extending length-wise of said arbor, and connected
thereto radially adjustable to different angles to the arbor. I preferably hinge the
cutters to the sides of the arbor either at one end of the cutters, or at or near the
centre of the lengths of the cutters. When hinged as last described the refitting
tool can be employed without additional means for sustaining the cutters, by simply
inserting the tool into the shell or barrel of the stop-cock or valve. The cutters
automatically conform to the taper of the valve-seat or interior of the said shell
or barrel, and by turning the arbor, the cutters are caused to operate on said
valve-seat.
But in order to secure and retain an exact gage of the taper or bevel of the
valve-seat, by which gage the valve-refitting cutters may be adjusted to a
corresponding taper or bevel, I mount longitudinally movably on the arbor, the
collars which are of different diameters, and receive upon their peripheries
respectively opposite ends of the cutters which are beveled on their undersides.
By pushing the said collars tightly under the beveled ends of the cutters after
said cutters have accommodated themselves to the valve-seat or tapering interior
of the shell or barrel the cutters are effectually sustained in their self-adjusted
positions. To retain the said collars in their said positions under the cutters I
form the arbor with screw-threaded portions and apply nuts thereto. By screwing
said nuts up against the outer faces of the collars the latter are confined in their
adjusted positions.
To properly sustain the ends of the cutters laterally I form the collars with
notches or recessed seats in their peripheries for the reception of the ends of the
cutters.
When the cutters are hinged at one end to the arbor only one collar and nut are
required at the opposite end of the cutters.
My improved cutter-holder consists essentially of an elongated shoe which is
formed with a longitudinal groove extending throughout the length of one side
thereof and terminating with slots extending through to the opposite side of the
shoe. Lengthwise in the groove lies the cutter which is pivoted to the shoe
preferably at the centre of its length by a pin passing transversely through the
shoe and cutter. The edge of the cutter projects from the face of the shoe to
allow it to operate on the valve, and there is sufficient space at the back of the
cutter to allow it to be adjusted to different angles longitudinally, according to the
bevel of the valve to be operated on. Through the back of the shoe and into
the groove at opposite sides of the pivot extend screw-threaded holes in which are
inserted set-screws by means of which the cutter can be set and retained at the
desired angle.
From the shoe, preferably at the centre of the length thereof, extends the

page_text: attaching shank, either rigidly attached thereto or formed in one piece therewith.
The described cutter-holder is secured with it attaching the shank to the face of
the head of the lathe by means of a bolt passing through a radial slot in said head
and eutering a screw-threaded eye in the shank.
The cutter holders stand with their shoes lengthwise along the side of the valve
and are to be set equidistant from the axis of the lathe, and the cutters are to be
all set to the same angle corresponding to the taper to be imparted to the valve.
In the operation of refitting the valve, said valve is forced gradually longitudinally
between the cutters by turning the spindle which is secured in a sleeve, which is
screw-threaded externally and works in a screw-threaded barrel formed on the top
of the stationary post.
1
1001
F. W. BARKER,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Machines for Refitting Valves and Cooks.
I, CHARLES FRANKLIN HALL of Skaneateles, in the County of Onondaga, in
the State of New York, U.S.A. Manufacturer 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 the class of machines which are employed for refitting
the valves and valve-seats of stop-cocks, globe-valves and analogous valves.
The object of this invention is to provide the cutting or abrading tool with a
holder which shall permit said tool to be readily and accurately adjusted to the
bevel or taper of the valve-seat to be refitted, and to that end the invention consists
in the novel construction and combination of parts hereinafter described and set
forth in the claim.
In the annexed drawings,
Figure 1 is a side view of the shell or barrel of a stop-cock with the refitting-
tool inserted therein.
Fig. 2 is a side view of said tool removed from the aforesaid member of the
stop-cock.
Figs. 3 and 4 are transverse sections, respectively on lines x x and y y.
Fig. 5 is a side view of a modification of said tool.
Similar letters of reference indicate corresponding parts.
My improved tool for refitting valve-seats consists, essentially of the arbor a and
the cutting or grinding tools ccc, extending lengthwise of said arbor and connected
thereto radially adjustable to different angles to the arbor. I preferably hinge the
cutters c c c to the sides of the arbor either at one end of the cutters, as shown in
Fig. 5 of the drawings, or at or near the center of the lengths of the cutters, as
represented in Fig. 2 of the drawings. When hinged as last described, the
refitting-tool can be employed without additional means for sustaining the
cutters c c c by simply inserting the tool into the shell or barrel B of the stop cock
or valve, as represented in Fig. 1 of the drawings. The cutters automatically
conform to the taper of the valve-seat or interior of the said shell or barrel and by
turning the arbor a the cutters are caused to operate on said valve-seat, but in
order to secure and retain an exact gage of the taper or bevel of the valve-seat, by
which gage the valve-refitting cutters may be adjusted to a corresponding taper or
bevel, I mount longitudinally movable on the smooth portion of the arbor a the
collars bb, which are of different diameters, and receive upon their peripheries
respectively opposite ends of the cutters, which are beveled on their under sides, as
shown at h h in Fig. 2 of the drawings. By pushing the said collars tightly under
the beveled ends of the cutters after said cutters have accommodated themselves to
the valve-seats or tapering interior of the shell or barrel B the cutters are

page_text: effectually sustained in their self-adjusted positions. To retain the said collars in
their said position under the cutters, I form the arbor a with screw-threaded
portions a a¹ and apply thereto nuts n n which are separate and detached from the
collars bb. By screwing said nuts up against the outer faces of the collars the
latter are confined in their adjusted positions. To properly sustain the ends of
the cutters laterally I form the collars b b with notches or recessed seats d d in
their peripheries for the reception of the ends of the cutters.
When the cutters are hinged at one end to the arbor, as shown in Fig. 5 of the
drawings only one collar 6 and nut n are required at the opposite end of the
cutters.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is :-
In combination with the arbor a provided with a screw-threaded portion a¹ and
cutters ecc pivotally connected to said arbor, the collar h mounted loosely on the
smooth portion of the arbor and supporting on its periphery the ends of the cutters,
and the nut n separate and detached from the collar and mounted on the screw-
threaded portion of the arbor outside of the collar, substantially as described and
shown.
F. W. BARKER,
Applicant's Agent.