Improvements in or connected with Lathes for Screwing, Turning and Facing various Articles.
Year: 1893

page_text: Date of Application, 30th Mar., 1893
Complete Specification Left, 30th Dec., 1893-Accepted, 3rd Feb., 1894
PROVISIONAL SPECIFICATION.
Improvements in or connected with Lathes for Screwing, Turning
and Facing various Articles.
We JAMES HENRY STONE, trading as Bentou and Stone, of Bracebridge Street,
in the City of Birmingham, Manufacturers, and SAMUEL WILLIAM HUGHES, of
Hawthorn Terrace, Leonard Road, Handsworth, in the County of Stafford,
Millwright, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in the combination and arrangement of
mechanism whereby various articles may be screw-threaded, turned, faced, or cut
off in a much simpler manner than heretofore.
This our invention refers more particularly to what is known as brassfounders'
work, and is intended to be applicable to most of the lathes now in use, although
such a machine may if desired be made complete in and of itself. The headstock,
spindle & pulleys are constructed much as usual, and mounted upon a strong bed in
the ordinary manner. The chuck or work holder is selected according to the kind
of work to be wrought upon, and the lathe spindle solid or hollow as the case may
require.
Upon the main spindle, and usually near to or upon the chuck is a toothed wheel,
which gears into a similar wheel keyed upon a master screw spindle, which latter
is carried in suitable bearings upon bracket frame bolted upon the lathe bed.
Usually for convenience these wheels are proportionate in diameters as two is to
one, the one upon the lathe spindle being the largest. By reason of this, the pitch
of the master screw which is driven by the smaller wheel is double the pitch
of the screwthread required. These wheels and the master screw may of course be
in other proportions if desired. The said master screw is mounted in the bracket
frame in any suitable manner which facilitates its ready removal for change. Upon '
this bracket frame is further provided a rocking spindle whose ends are free to
rock in suitable bearings. Upon this rocking spindle and between its bearings is
fixed a tool box and a "former" or clutch carrier, the latter being arranged to meet
and impinge upon the master screw, by which its motion is controlled, while at the
same time the cutting tool or tools are operating upon the work to be wrought.
At the rear side (next the operator) a lever is connected to the rocking tool box, to
the outer end of which is attached a weight, or if desired a spring may be made to
answer the same purpose, by which the tendency of the tool and the clutch is always
to be free of the master screw and of the work. The tool however is kept up to its
work as follows:-Upon the said rocking box is carried an adjustable stop, and
in contiguity thereto and upon the lathe bed or the bracket frame aforesaid is
provided a corresponding stop or locking piece which is somewhat of a plate form
lengthwise to the traverse, according to the requirement of the latter. Thus when
the tool box is pushed forward to its work, the clutch is thrown into the master
screw, and as it advances the stop passes along beneath the locking piece, which
prevents the clutch leaving the master screw, and of course the tool leaving its
work, until the stop piece has traversed the length of the locking piece, when the
weight upon the lever immediately and automatically withdraws the tool box &c.,
and the whole remains stationary, until rearranged as before described.
The particular position and arrangement of parts of this our invention may be
varied somewhat without departing from its nature, as for instance, we may modify
the tool box and the releasing mechanism so as to accommodate internal operations
pon tubular bodies, also that more than one tool may be simultaneously carried

page_text: upon the same tool box, such as for turning, facing or for cutting off, also this
arrangement may be so used for similarly operating upon taper bodies.
Dated this 29th day of March 1893.
CHARLES T. POWELL,
Applicants' Agent.
Improvements in or connected with Lathes for Screwing, Turning,
and Facing various Articles.
We, JAMES HENRY STONE, of the Firm of Benton & Stone, of Bracebridge
Street, in the City of Birmingham, Manufacturers, and SAMUEL WILLIAM
HUGHES, of Hawthorn Terrace, Leonard Road, Handsworth, in the County of
Stafford, Millwright, 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 improvements in the combination and arrangement of
mechanism whereby various articles may be screw-threaded, turned, faced, or cut
off in a much simpler manner than heretofore.
This our invention refers more particularly to what is known as brassfounders'
work, and is intended to be applicable to most of the lathes now in use, although
such a machine may if desired be made complete in and of itself.
In order to more clearly explain this our invention, we have appended hereunto
an illustrative sheet of drawings upon which are figures and numbers of reference,
similar numbers referring throughout the several views to the same thing or part.
Fig. 1, is a front view of this our invention, such parts only being shown that are
necessary to explain the same.
Fig. 2, is a plan view of our invention.
Fig. 3, is a transverse sectional view of Fig. 1, on line A-B.
Fig. 4, is a transverse sectional view of Fig. 1, on line C-D, showing the tool
and the former as when in cutting operation.
Fig. 5, is a similar sectional view to that of Fig. 4, but showing the tool and
the former as when out of cutting operation.
The headstock 6, spindle 7, and pulleys 8, are constructed such as usual, and
mounted upon a strong bed 9, in the ordinary manner. The chuck or work
holder 10, is selected according to the kind of work to be wrought upon, and the
lathe spindle 7, solid or hollow as the case may require.
Upon the main spindle 7, and usually near to or upon the chuck 10, is a toothed
wheel 11, which gears into a similar wheel 12, keyed upon a master screw
spindle 13, which latter is carried in suitable bearings 14, upon a bracket 15,
bolted upon the frame 18. Usually for convenience these wheels 11 and 12 are
proportionate in diameters as two is to one, the one 11, upon the lathe spindle being
the largest. By reason of this, the pitch of the master screw 16, which is driven
by the smaller wheel 12, is double the pitch of the screwthread required upon the
work to be produced. These wheels and the master screw may of course be in
other proportions if desired. The said master screw 16, is further supported at its
other end by the adjustable and removable pointed screw 17, or in any suitable
manner which facilitates its ready removal for change. Upon this bracket
frame 18, is further provided a rocking spindle 19, whose ends are free to rock in
suitable bearings 20, 20. Upon this rocking spindle 19, and between its bearings is
fixed a tool box 21, and a "former "22, or clutch carrier, the latter being arranged
to meet and impinge upon the master screw 16, by which its motion is controlled,
while at the same time the cutting tool or tools 23, are operating upon the work to
be wrought. At the rear side (next the operator) a lever 24, is connected to the

page_text: rocking tool box to the outer end of which is attached a weight, or if desired a
spring may be made to answer the same purpose, by which the tendency of the tool
and the clutch is always to be free of the master screw and of the work, as seen in
Fig. 5. The tool however is kept up to its work as follows:-Upon the said
rocking box is carried or formed a stop arrangement as follows:-Upon the lathe
bed or the bracket frame aforesaid, is provided a stop or locking piece 25, which is
somewhat of a plate form lengthwise to the traverse, according to the requirements
of the latter, and adjustable in position by reason of the slot 26, or other suitable
slot or slots. Upon the tool holder 22, is made the notch or recess 27, which is
capable of sliding along the corner surface of the block 25, as seen in Figs. 3 & 4.
While in this position, it will be seen that the tool 23, and the former 28, are in
their operating positions, that is, when the tool box is pushed forward to its work,
the clutch or former 22, is thrown into the master screw 16, and as it advances the
locking piece prevents the clutch leaving the master screw and of course the tool
leaving its work, until the stop recess 27, has traversed the length of the locking
piece 25, when the weight upon or of the lever 24, immediately and automatically
withdraws the tool box &c., and the whole remains stationary, as seen in Fig. 5,
until rearranged as before described.
The particular position and arrangement of parts of this our invention may be
varied somewhat without departing from its nature, as for instance, we may modify
the shape and position of the tool box and the releasing mechanism so as to
accommodate internal operations upon tubular bodies, also that more than one tool
may be simultaneously carried upon the same tool box, such as for turning, facing
or for cutting off, also this arrangement may be so used for similarly operating upon
taper bodies. To effect the latter we arrange that the screw 16, shall be connected
at its one end by means of the sphere 29, to the driving gear 12. A driving pin 30,
is passed through the screw 16, and sphere 29, by which the former is driven, a
sufficient amount of play or room being made in the hole through which the said
pin passes to allow of the necessary angular freedom. It will be now seen that by
means of the adjustable slot 31, the bracket 32, may be moved into an angular
position with the centre line of the work being operated upon.
Having now particularly described and ascertained the nature of this our said
invention, and in what manner the same is to be perforined, we declare that what
we claim is :-
The general combination and arrangement of parts constituting our improvements
in or connected with lathes for screwing, turning, and facing various articles, that
is to say, the combination with the headstock 6, and pulleys 8, of the gear
wheels 11 and 12, shaft 19, former 22, screw 16, tool box 21, having notch 27 and
block 25, the whole constructed and arranged, substantially as shown and described.
Dated this 29th day of December 1893.
CHARLES T. POWELL,
Applicants' Agent.