An Improved Turning Lathe and "Chuck" therefor.
Year: 1889

page_text: Date of Application, 10th Oct., 1889
Complete Specification Left, 10th July, 1890-Accepted, 23rd Aug.,
1890
PROVISIONAL SPECIFICATION.
An Improved Turning Lathe and "Chuck" therefor.
We, WILLIAM BARRACLOUGH, Ironfounder, and ALBERT RHODES, Engineer, both
of Providence Foundry Stanningley, in the County of York, do hereby declare the
nature of this invention to be as follows:-
This invention relates to lathes or "chucks" for turning metal articles and to the
articles shaped by means of thein and has for one of its chief objects to assist in the
formation of round spindle ends upon cooking range fire bars; it is also designed for
use in the formation of plain and screw threaded bolts with square heads and other
metal articles or bars which have a combination of square and rounded members.
In carrying out our invention we construct our improved turning lathe or chuck
with a hollow or tubular spindle which is open at each end and throughout its entire
length.
Two amongst others of the purposes for which this tubular construction of the said
spindle is adopted are, 1st in order that bars of considerable length may be fixed in
the lathe conveniently for operation with our improved appliances and 2nd in order
that we may be able when required to adjust a guage therein for use when forming
round members upon square bars by means of this lathe.
Upon the fore end of this said tubular spindle we affix (preferably by screwing it
thereon) a faucet piece for the purpose of holding a set of moveable jaws. These said
jaws are made somewhat smaller in diameter than the interior of the faucet piece or
nose of the spindle and their hinder ends protrude a little way into the spindle but are
retained permanently in their required positions by means of the following mechanism;
to the outside of one of the said jaws (the lower one) there is attached a peg which is
provided with a seat or socket on the inside of the faucet piece; when this jaw is
inserted within the lower part of the faucet and the upper jaw placed upon it they are
prevented from entering further than required into the hollow spindle by means 1st of
the aforesaid peg and socket; 2nd by a shoulder formed upon their hinder ends which
bear against the exposed end of the spindle and 3rd by a ring or disc collar made in
two parts and fitted into an annular groove formed in the fore part of the said jaws
and screwed upon the outer end of the faucet piece; the foremost ends of these jaws
protrude some distance forward beyond the faucet piece.
Through the longitudinal centre of the said jaws is a square bore and the jaws are
(or may be) made to gape as wide as the chamber of the faucet piece will permit by
means of one or more springs inserted within or between the jaws.
When a square bar is placed in the said bore contained within these jaws the latter
are, or may be, pressed tightly upon the bar by means of one or more screws or
pinching pins inserted (from the outside) through the body of the faucet piece and
operated (preferably) by a key or spanner which causes their inner ends to bear upon
the outer surface of the upper jaw and press it tightly upon the square bar.
The faucet piece attachment (upon the said hollow spindle) and its associate
mechanism constitute what is commonly termed a
"chuck."
Square bars which vary in thickness, one from another, may be operated upon
successfully in this machine by packing the inside surfaces of the said jaws (which
form the square bore) with plates of suitable thickness.
When the bar is inserted and firmly fixed within the said chuck and the spindle
revolved the process of turning the exposed part of the said bar into the required
shape is performed in the usual manner with turning tools held either in the hand or
in a travelling stock.
Upon the frame of the lathe and beyond the hinder end of the said hollow spindle
we attach a staple and furnish it with a rod or guage which is capable of being

page_text: projected to any required distance within the hollow spindle where it serves as a stop
to the bars which are inserted within the "chuck" which is attached to the opposite
end of the spindle.
Our improved chuck renders an additional "head" (all but) unnecessary but may
be used with such an additional member in exceptional instances if required.
Dated this 9th day of October 1880.
JOSEPH
LOCKWOOD,
Argyle Street, Glasgow, Agent for the Inventors.
COMPLETE SPECIFICATION.
An Improved Turning Lathe and "Chuck" therefor.
We WILLIAM BARRACLOUGH, Ironfounder and ALBERT RHODES Foreman both of
Providence Foundry, Stanningley Yorkshire 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 lathes or chucks for turning metal articles and has for
one of its chief objects to facilitate the formation of round spindle ends upon cooking
range fire bars it is also designed for use in the formation of plain and screw threaded
bolts with square heads as well as other metal articles or bars which contain a com-
bination of square and rounded members.
In carrying out our invention we construct our improved turning lathe or chuck
with a hollow or tubular spindle which is open at each end and throughout its entire
length. Two amongst others of the purposes for which the tubular construction of the
said spindle is adopted are 1st in order that bars of considerable length may be fixed
in the lathe conveniently for operation with our improved appliances and 2nd in order
that we may be able when required to adjust a guage therein for use when forming
round members upon squaro bars by means of this lathe.
Upon the fore end of this said tubular spindle we affix (preferably by screwing it
thereon) a faucet piece for the purpose of holding a set of moveable jaws. These said
jaws are made somewhat smaller in diameter than the interior of the faucet piece or
nose of the spindle and their hinder ends protrude a little way into the spindle but are
retained permanently in their required positions by means of the following
mechanism; to the outside of one of the said jaws (the lower one) there is attached a
peg which is provided with a seat or socket on the inside of the faucet piece when
this jaw is inserted within the lower part of the faucet and the upper jaw placed upon
it; they are prevented from entering further than required into the hollow spindle by
means 1st of the aforesaid peg and socket; 2nd by a shoulder formed upon their
hinder ends which bear against the exposed end of the spindle and 3rd by a ring or
disc collor made in two parts and fitted into an annular groove formed in the fore
part of the said jaws and screwed upon the outer end of the faucet piece the foremost
ends of these jaws protrude some distance forward beyond the faucet piece. Through
the longitudinal centre of the said jaws is a square bore and the jaws are (or may be)
made to gape as wide as the chamber of the faucet piece will permit by means of one
or more springs inserted within or between the jaws.
When a square bar is placed in the said bore contained within these jaws the latter
are (or may be) pressed tightly upon the bar by means of one or more screws or
pinching pins inserted (from the outside) through the body of the faucet piece and
operated (preferably) by a key or spanner which causes their inner ends to bear upon
the outer surface of the upper jaw and press it tightly upon the square bar.
The faucet piece attachment (upon the said hollow spindle) and its associate
mechanism constitute what is commonly termed a chuck." Square bars which vary
in thickness one from another, may be operated upon successfully in this machine by
packing the inside surfaces of the said jaws (which form the square bore) with plates
of suitable thickness.
When the bar is inserted and firmly fixed within the said "chuck" and the spindle

page_text: revolved the process of turning the exposed part of the said bar into the required
shape is performed in the usual manner with turning tools held either in the hand or
in a travelling stock. Upon the frame of the lathe and beyond the hinder end of the
said hollow spindle we attach a staple and furnish it with a rod or guage which is
capable of being projected to any required distance within the hollow spindle where it
serves as a stop to the bars which are inserted within the "chuck "which is attached
to the opposite end of the spindle.
Our improved "chuck" renders an additional "head" (all but) unnecessary but
may be used with such an additional member in exceptional instances if required.
In order that our said invention may be better understood and more readily carried
out we have prepared the accompanying drawings in which Fig. 1 is a view in
perspective of our combined turning lathe and chuck.
Fig. 2 is a longitudinal section of fig. 1.
Fig. 3 is a front view in perspective of our improved "chuck."
Figs. 4 & 5 are perspective views of two jaws for our improved "chuck."
Fig. 6 is a sectional view of two associate jaws separated from the "chuck
cylinder or faucet piece.
"
Figs. 7 & 8 are sectional views of the said "chuck" cylinder or faucet piece one
being detached from the adjacent end of its hollow spindle and the other being fitted
upon the spindle.
Similar letters of reference are employed throughout the said drawings to indicato
corresponding parts. The part marked A, is the bed and supporting frame of the
lathe; B, a hollow spindle; C, the driving wheels or cone pulleys; D, a
"chuck"
cylinder or faucet pieco; E, a staple; F, a guage rod; G, the jaws; H, an anular
disc ring; J, a locking latch; K, a locking rim or flange; L. anti-friction bushes;
M, a square bar with rounded spindle ends. The following particulars respecting the
construction and operation of our combined lathe & "chuck as illustrated by the
drawings above referred to will we believe enable our invention to be fully understood.
The bed and frame marked A containing the bushes L and supporting the hollow
spindle B with cone pulleys marked in figures 1 & 2 of the accompanying
drawings represent parts which are comprised in many ordinary lathes and our
invention consists in the combination therewith of the mechanism referred to by the
other alphabetical letters and numerals.
Upon one end of the hollow spindle B we attach a short (cylinder or) faucet piece
marked D and insert within this cylinder jaws, such as those marked G and cause
then to revolve only as the spindle revolves and remain always in the same relation
to the cylinder by means of the shoulders g2 abutting against the spindle end 2 the
peg 3 reposing in the cavity d2 and the disc ring or collor H screwed upon the end
of the cylinder D and inserted within the grooves as shewn in the various
illustrations.
The jaws marked G are shaped suitably for holding between them (when put
within the cylinder as shewn in Figures 1, 2 and 3) a square, angular or other shaped
bar; the faces being moulded to suit the form and size of the said bar.
Those tapering surfaces of the jaws (which are marked 8) and hollow spindle
(marked b) also contribute to fix the jaws tightly within the chuck cylinder when the
latter is screwed on to the spindle end sufficiently far to bring these surfaces g6 and 6³
into contact with each other.
Between those parts of the jaws which are in nearest contact one with the other we
sometimes provide grooves marked 9° and fit in each or either of them a spring
marked 97 for the purpose of expanding the jaws when required for the insertion of
a bar.
When this cylinder or faucet piece is placed on the end of the spindle (by screwing
or other convenient means), and the jaws inserted therein, the latter are retained more
firmly in their places by means of the two semi-circular collar pieces H, fig. 3, which
are screwed on to the end of cylinder D and form a disc ring.
We have shewn at 3 figure 3, two tightening screws within the shell of the said

page_text: cylinder which are operated by a key or other tool for the purpose of closing the
jaws, G, tightly upon the bar marked M or relaxing their grip upon it.
By means of the locking arrangement J, and K, we are enabled to fix the lathe
firmly in any required position whilst we revolve the faucet piece upon the spindle
end. This is effected by reversing the handle j2 (fig. 1) until the latch J, engages
with the notched flange, K, upon the disc plate which abuts against the pulleys C,
in fig. 1; thereby preventing the spindle being revolved whilst the faucet piece D, is
being manipulated. The angle faces d' upon the faucet piece of the "chuck" afford
a convenient means for manipulating it with a spanner or similar too!.
:
Upon the rear end of the framework A, we have shown a staple E fitted there for
the purpose of supporting a guage rod, F, which is projected into the interior of the
hollow spindle where its extreme end is furnished with a thimble (or other shaped
stop as shewn in figure 2. The said staple-or equivalent mechanism may be fitted
in any other position at. the rear of the tubular spindle, convenient for holding a
guage rod an upright bracket fitted upon the bed plate A (suitably lengthened) or
a cantilever bracket fitted at one side would do equally well for this purpose: the
object of the stop being to assist in obtaining uniformity in the length of the articles
which are manipulated in the "chuck" and lathe. By relaxing the screwed
bolts 2 fig. 1, and the plate e³ the guage rod F may be moved as required. By means
of our improvements, very long and slender articles, such as square rods and bars
may be fixed (rigidly) in a comparitively short lathe whilst any portions of the said
articles are being turned or bored; An additional travelling "head" may be used, as
before named, in conjunction with our improvements for any ordinary turning lathe
purpose if required.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed-we declare that what we
claim is,
1st. In a "lathe" for turning or boring articles the combination therewith of the
mechanical parts, or their equivalents, all substantially as herein described and shewn
and for the purposes specified.
for turning or boring articles, the combination therewith of a
all substantially as herein described and shown and for the purposes
2nd. In a "lathe
"
"chuck
specified.
وو
3rd. In a "lathe" for turning or boring articles, the combination therewith of a
latch J and associate notch mechanism, K, all substantially as herein described and
shewn and for the purposes specified.
4th. In a "lathe" for turning and boring articles, the combination therewith of a
removeable and adjustable guage, F, all substantially as herein described and shewn
and for the purposes specified.
Dated this Seventh day of July 1890.
JOSEPH LOCKWOOD.
263, Argyle Street, Glasgow, Agent for the Inventors.