Improvements in Lathes or Machinery for Dressing and Forming Screws on or in Articles.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Lathes or Machinery for Dressing and Forming
Screws on or in Articles.
We, JOSEPH BREEDEN AND COMPANY LIMITED, of New Mill Works, Fazeley
Street, Birmingham, in the County of Warwick, Manufacturers, and FRANCIS
BREEDEN, Director of Joseph Breeden and Company Limited aforesaid, Manu-
facturer, do hereby declare the nature of this invention to be as follows:-
;-
The said invention consists of the construction and arrangements of parts
hereinafter described of lathes or machinery for dressing or turning and screw
threading cocks or taps and parts of gas and water fittings but may also be
applied to the dressing or turning and screw threading of other articles. The
improvements constituting the said invention consist, in part, in so modifying
the hollow or tubular and cross slotted sliding centre and the dressing, turning
and tapping and screwing tools described and claimed in the Specification of
Letters Patent granted to us No. 19,699 year 1896, as to fit the said centre
and tools to be worked automatically instead of by hand, thereby superseding
the use of hand labour in the chucking of the articles and the operation of the
tools.
In constructing a dressing machine according to the present invention we
use a sliding headstock having a vertical motion in the standard or frame of
the machine. Rotating in the said headstock is the spindle to which the dressing
or turning tool is affixed and surrounding the said spindle is the hollow or
tubular and cross slotted centre for chucking the article to be operated upon.
The spindle is keyed by a sliding key and key way to the sliding centre in the
headstock so that the said spindle and sliding centre rotate together. Besides
a rotary motion, the spindle, carrying the turning or other tool, has a vertical
sliding motion in the tubular centre for advancing the said tool to and with-
drawing it from the article under operation.
The articles to be operated upon are placed in, and are incapable of rotation
in, cupped chucks fixed near the marginal part of a horizontal table or carrier
having an intermittent rotary motion communicated to it so as to bring the
several articles in succession under the centre and tool in the vertical head-stock
and remove them from under the centre and tool.
The vertical sliding headstock carrying the rotating and sliding centre and
spindle is advanced to and withdrawn from the horizontal table or carrier
described for chucking the article and for releasing the article under operation,
by means of a vertical rotating screw working in a screw box at the base of the
sliding headstock. The said screw has an alternating rotary motion in opposite
directions communicated to it by means of a spur wheel on its top with which
another spur wheel gears, the latter spur wheel having rotary motion in opposite
directions communicated to it by means of a weighted cord fixed to the face of
the driving spur wheel and also to a disc or pull wheel driven from the principal
shaft of the machine. By the rotation of the disc or pull wheel and action of
the weight, the cord is made to travel alternately in opposite directions and

page_text: rotary motion in opposite directions thereby transmitted to the vertical screw
for giving a rising and falling motion to the sliding headstock and parts carried
by it.
The rotating and vertically sliding spindle has a reciprocating vertical
motion given to it in the tubular sliding centre for advancing it to the chucked
article and for withdrawing it from the dressed article, by means of a link
jointed at one end to the top of the spindle, the other end being jointed to a rotat-
ing face plate driven by bevil gearing from the principal shaft of the machine.
The intermittent rotary motion is given to the table carrying the articles to
be dressed by a lever driven by bevil gearing from the principal shaft of the
machine, acting upon radial arms on the axis of the said rotary table.
The parts of the machinery when used for forming screws on or in articles
are modified in the following manner.
Instead of making the whole of the vertical headstock slide, one upright only
of the headstock is made capable of sliding, the said sliding upright carrying
the hollow and slotted centre and being worked in the manner herein before
described with respect to the sliding headstock.
The other upright of the headstock is fixed and in the said fixed upright a
rotating sleeve works. Through this sleeve the upper end of the sliding and
rotating spindle works. This spindle carries the tapping or worming tool and
is rotated and a rising and falling motion given to it by the following com-
bination of parts.
To the top of the spindle a "leader" screw corresponding with the thread to
be cut is fixed. This "leader" screw works in a fixed screw box or "leader"
carried by the upright of the machine. The top of the rotating sleeve carries
a chain wheel and as the said sleeve is connected to the spindle by a sliding
key. the rotation of the said sleeve communicates rotation to the spindle. By
rotating this chain wheel in opposite directions the spindle is correspondingly
rotated and the "leader" screw made to rise and fall in its screw box or "leader"
and thereby communicate the required reciprocating sliding motion to the rotat-
ing spindle to advance the screwing tool into and unscrew it out of the article
under operation. The rotary motion in opposite directions of the chain wheel
is effected by a chain working over it and over a larger chain wheel on a ver-
tical shaft and the latter is alternately driven in opposite directions by two
bevil wheels gearing with a large bevil wheel on a horizontal shaft, which last
named bevil wheel is partly plain and partly toothed. When the the toothed part
of this bevil wheel gears with one of the bevil wheels on the vertical shaft the
latter is rotated in one direction and when the bevil wheel on the horizontal
shaft gears with the other bevil on the vertical shaft rotatory motion in a con-
trary direction is given to the said vertical shaft. In this way rotary motion
in opposite directions is transmitted to the spindle and to the "leader" or
regulating screw of the said spindle. The plain or untoothed part of the bevil
wheel described provides for the necessary period of rest in the screwing tool.
We prefer to arrange different kinds of machines around the same inter-
mittent rotary table or carrier on which the articles to be operated upon are
fixed, so that the different machines act in succession upon the same article and
thereby finish an article at each rotation of the table: that is to say, one
machine may dress the inside or both inside and outside of the article; another
machine may screw the outside (or inside) of the same article; another machine
may screw the inside (or outside) of the same article: and another machine mav
face or finish the same article by a turing operation. But we do not limit
ourselves to operating in succession upon the same article as the same operation
may be effected upon a number of article's carried by the table.
Dated this Twelfth day of May 1898.
W. T. WHITEMAN,
Agent for the Applicants.

page_text: Improvements in Lathes or Machinery for Dressing and Forming
Screws on or in Articles.
We, JOSEPH BREEDEN AND COMPANY LIMITED, of New Mill Works, Fazeley
Street, Birmingham, in the County of Warwick, Manufacturers, and FRANCIS
BREEDEN, Director of Joseph Breeden and Company Limited aforesaid, Manu-
facturer, do hereby declare the nature of the said invention and in what manner
the same is to be performed to be particularly described and ascertained in and
by the following statement:-
The said invention consists of the construction and arrangements of parts
hereinafter described of lathes or machinery for dressing or turning and screw
threading cocks or taps and parts of gas and water fittings but may also be
applied to the dressing or turning and screw threading of other articles. The
improvements constituting the said invention consist, in part, in so modifying
the hollow or tubular and cross slotted sliding centre and the dressing, turning
and tapping and screwing tools described and claimed in the Specification of
Letters Patent granted to us No. 19699 year 1896, as to fit the said centre
and tools to be worked automatically instead of by hand, thereby superseding
the use of hand labour in the chucking of the articles and the operation of the
tools.
In constructing a dressing machine according to the present invention we
use a sliding headstock having a vertical motion in the standard or frame of
the machine. Rotating in the said headstock is the spindle to which the dressing
or turning tool is affixed and surrounding the said spindle is the hollow or
tubular and cross slotted centre for chucking the article to be operated upon.
The spindle is keyed by a sliding key and key way to the sliding centre in the
headstock so that the said spindle and sliding centre rotate together. Besides
a rotary motion, the spindle, carrying the turning or other tool, has a vertical
sliding motion in the tubular centre for advancing the said tool to and with-
drawing it from the article under operation.
The articles to be operated upon are placed in, and are incapable of rotation
in, cupped chucks fixed near the marginal part of a horizontal table or carrier
having an intermittent rotary motion communicated to it so as to bring the
several articles in succession under the centre and tool in the vertical headstock
and remove them from under the centre and tool.
The vertical sliding headstock carrying the rotating and sliding centre and
spindle is advanced to and withdrawn from the horizontal table or carrier
described for chucking the article and for releasing the article under operation,
by means of a vertical rotating screw working in a screw box at the base of the
sliding headstock. The said screw has an alternating rotary motion in opposite
directions communicated to it by means of a spur wheel on its top with which
another spur wheel gears, the latter spur wheel having rotary motion in opposite
directions communicated to it by means of a weighted cord fixed to the face of
the driving spur wheel and also to a disc or pull wheel driven from the principal
shaft of the machine. By the rotation of the disc or pull wheel and action of
the weight the cord is made to travel alternately in opposite directions and
rotary motion in opposite directions thereby transmitted to the vertical screw
for giving a rising and falling motion to the sliding headstock and parts carried
by it.
The rotating and vertically sliding spindle has a reciprocating vertical
motion given to it in the tubular sliding centre for advancing it to the chucked
article and for withdrawing it from the dressed article, by means of a link

page_text: jointed at one end to the top of the spindle, the other end being jointed to a rotat-
ing face plate driven by bevil gearing from the principal shaft of the machine.
The intermittent rotary motion is given to the table carrying the articles to
be dressed by a lever driven by bevil gearing from the principal shaft of the
machine, acting upon radial arms on the axis of the said rotary table.
The parts of the machinery when used for forming screws on or in articles
are modified in the following manner.
Instead of making the whole of the vertical headstock slide, one upright only
of the headstock is made capable of sliding, the said sliding upright carrying
the hollow and slotted centre and being worked in the manner hereinbefore
described with respect to the sliding headstock.
The other upright of the headstock is fixed and in the said fixed upright a
rotating sleeve works. Through this sleeve the upper end of the sliding and
rotating spindle works. This spindle carries the tapping or worming tool and
is rotated and a rising and falling motion given to it by the following com-
bination of parts.
To the top of the spindle a "leader" screw corresponding with the thread to
be cut is fixed. This leader" screw works in a fixed screw box or
leader"
carried by the upright of the machine. The top of the rotating sleeve carries
a chain wheel and as the said sleeve is connected to the spindle by a sliding
key, the rotation of the said sleeve communicates rotation to the spindle. By
rotating this chain wheel in opposite directions the spindle is correspondingly
rotated and the "leader" screw made to rise and fall in its screw box or "leader"
and thereby communicate the required reciprocating sliding motion to the rotat-
ing spindle to advance the screwing tool into and unscrew it out of the article
under operation. The rotary motion in opposite directions of the chain wheel
is effected by a chain working over it and over a larger chain wheel on a ver-
tical shaft and the latter is alternately driven in opposite directions by two
bevil wheels gearing with a large bevil wheel on a horizontal shaft which last
named bevil wheel is partly plain and partly toothed. When the toothed part
of this bevil wheel gears with one of the bevil wheels on the vertical shaft the
latter is rotated in one direction and when the bevil wheel on the horizontal
shaft gears with the other bevil wheel on the vertical shaft rotatory motion in a
contrary direction is given to the said vertical shaft. In this way rotary motion
in opposite directions is transmitted to the spindle and to the
leader" or
regulating screw of the said spindle. The plain or untoothed part of the bevil
wheel described provides for the necessary period of rest in the screwing tool.
We prefer to arrange different kinds of machines around the same inter-
mittent rotary table or carrier on which the articles to be operated upon are
fixed so that the different machines act in succession upon the same article and
thereby finish an article at each rotation of the table; that is to say, one
machine may dress the inside or both inside and outside of the article another
machine may screw the outside (or inside) of the same article another machine
may screw the inside (or outside) of the same article and another machine may
face or finish the same article by a turning operation. But we do not limit
ourselves to operating in succession upon the same article as the same operation
may be effected upon a number of articles carried by the table.
We will now proceed to describe with reference to the accompanying draw-
ings a compound lathe or machine constructed according to this invention
consisting of a series of independent lathes or machines of different kinds
arranged above an intermittent rotary table or carrier for acting in succession
upon the same union joint supported by the said table for turning or dressing
the interior and exterior of the said union joint: for tapping the joint; for
screwing the joint and finally for face dressing or turning the joint.
Figure 1 represents a front elevation of the said compound lathe or machine
and Figure 2 is a plan of the same; Figure 3 represents a plan of the inter-
mittent rotary table or carrier detached and Figure is a cross section of the

page_text: same; Figure 5 represents in elevation partly in section a portion of the lathe
or machine taken on the line X, X Figure 2;
Figure 6 represents in front elevation, Figure 7 in side elevation and Figure 8
in vertical section, drawn to a larger scale, that lathe or part of the machine
by which the internal and external dressing or turning of the union joint is
effected. In Figures 6 and 7 the rotating and sliding centre is represented in
its lowered position for chucking or holding the article in the cupped chuck on
the intermittent rotary table and in Figure 8 the said rotating and sliding
centre is represented in its raised position and removed from the cupped chuck
for releasing the article.
Figures 9 and 10 represent vertical sections drawn to a larger scale, of that
lathe or part of the machine by which the tapping of the union joint is effected,
Figure 9 showing the rotating and sliding centre in its lowered or chucking
position and Figure 10 showing the same in its raised or out of action position.
A lathe or machine similar to that represented in Figures 9 and 10 but pro-
vided with a screwing tool instead of a tapping tool, follows the use, in the
compound machine, of the lathe or machine Figures 9 and 10.
Figure 11 represents in section drawn to a larger scale, the lower or acting
part of the sliding and rotating centre used for the first turning operation and
also for the third or screwing operation and also for the last or face dressing
operation and Figure 12 represents in section, drawn to a larger scale, the lower
or acting part of the sliding and rotating centre used for the second or tapping
operation. The conical part of the base of the centre in Figure 11 enters the
article to be chucked while in the centre Figure 12 its conical base part
embraces the outside of the article.
Figure 13 represents partly in section and partly in elevation the two turn-
ing tools and part of their spindle drawn to a larger scale by which tools the
interior and exterior of the union joint are dressed or turned the said Figure 13
also showing the cupped chuck and the union joint held therein; Figure 14
represents the cupped chuck and union joint fixed therein in horizontal section;
Figure 15 represents the tapping tool and part of its spindle and the cupped
chuck; Figure 16 represents the screwing tool and part of its spindle and cupped
chuck and Figure 17 represents the face dressing or turning tool and part
of its spindle and cupped chuck, each tool being represented acting upon the
union joint in the cupped chuck.
Figure 18 represents the cast union joint before it is operated upon by the
compound lathe or machine and Figures 19, 20, 21 and 22 represent the succes-
sive operations effected upon it by the different lathes or machines. That is to
say, by the operation of the turning tools a, b (Figure 13) of the first lathe the
upper part of the exterior of the union joint in the cupped chuck g is turned
or dressed and the interior turned off so as to shoulder the interior of the said
upper part of the joint as represented in Figure 19; by the operation of the
tapping tool d (Figure 15) of the second lathe the interior of the partly made
union joint is tapped as represented in Figure 20; by the operation of the
screwing tool e (Figure 16) of the third lathe the exterior of the partly made
union joint is screwed as represented in Figure 21 and by the operation of the
turning tool (Figure 17) of the fourth lathe the union joint is finished by
removing the burr or fraise from its face as illustrated in Figure 22. The union
joint (or other article) is prevented rotating in the cupped chuck g during the
operation of the tools upon it by ribs near its bottom and at opposite sides taking
into slots in the cupped chuck as best seen in Figure 14.
The several cupped chucks g, g are screwed into the intermittent rotary table
or carrier h which has a V shaped annular rib on its underside for working in
a correspondingly shaped groove in the bed of the machine (see Figure 6). An
intermittent rotary motion is given to the table for bringing the several chucks
and union joints fixed therein in succession under the several lathes or machines
for effecting the operations herein before pointed out upon the union joints in

page_text: the following manner. The said table h turns upon the axis h the enlarged
base of which carries a series of radial arms which are so acted upon by the
lever i fixed on the rotating shaft 2 as to give an intermittent motion through
one sixth of a rotation to the said table. The rotating shaft carrying the
operating lever i is worked in the following manner. On the shaft 2 is a bevil
wheel which gears with a bevil wheel on the inclined shaft which receives
its motion from the cross shaft k through the bevil gearing represented; the
cross shaft k is driven from the overhead main driving shaft 7 through the
pulleys and 13 and driving band 14.
The lathe or machine for externally and internally turning or dressing the
union joint is marked A; the tapping lathe is marked B; the screwing lathe is
marked C and the face turning or finishing lathe is marked D).
We will first describe in detail the construction and action of the lathe or
part of the machine marked A (best seen in Figures 6, 7 and 8) for operating
on the union joint in the manner represented in Figures 13 and 19; m is the
sliding headstock of the lathe having a reciprocating vertical motion in the up-
right or frame m² of the machine, the rising and falling motion being given to
the said sliding headstock by the vertical screw m³ working in a screw box m³
in the lug of the said headstock (see Figure 8). The screw m³ is rotated in
opposite directions for giving the required reciprocating sliding motion to the
headstock m and parts carried by it by the mechanism hereinafter described.
Keyed to collars which are capable of rotating in .brasses in the said headstock
is a sleeve n the said sleeve n being rotated by the pulley n³ keyed to the said
sleeve, a band n² (see Figure 1) passing over the said pulley. The band n² takes
its motion from a pulley n on the shaft n driven from the overhead main driv-
ing shaft (see Figures 1 and 2). The said sleeve together with the removable
conical tool p fixed to its bottom constitute the hollow sliding and rotating
centre of the lathe for chucking the article when the said centre is in the
advanced position represented in Figures 6, 7 and 11. In the tool p of the said
centre is a cross slot 2 through which the turning tool or tools pass to operate
upon the chucked article. The said turning tools are locked to the spindle or
plunger which slides in and rotates with the hollow or tubular centre n, p the
said tool spindle being connected to the hollow centre by a key and keyway to
permit of the sliding motion of the said spindle. The tool spindle 7 has a
reciprocating motion given to it by the following mechanism for advancing the
rotating turning tools to and for withdrawing them from the article under
operation. The top of the spindle q is provided with a screw cap to which the
link is jointed by a ball and socket joint. The outer end of the said link q³
is jointed to a pin on the face or crank plate fixed on the end of the
cross shaft carrying the bevil wheel q which gears with another bevil wheel
on the inclined shaft 77 the latter shaft receiving motion from the cross shaft k
through the bevil gearing at ³.
We will now proceed to describe the mechanism for giving an alternating
rotary motion to the screw m³ for effecting the rising and falling motion of the
headstock and parts carried thereby for chucking and releasing the article under
operation. On the top of the vertical screw m³ is a spur wheel m which gears
with the spur wheel m to which rotaromotion in opposite directions is given
by means of the weighted cord m and pull wheel m". The said weighted
cord m passes around and is fixed to the pulley m8 on the face of the spur
wheel me and also passes between the guide wheels m¹0 (see Figure 5) and is
fastened at m to the marginal part of the interior of the double disc or pull
wheel m The pull disc m¹¹ is fixed on the shaft & driven in the manner herein-
before described. The disc or pull wheel m¹ is made in two parts fixed together
face to face at a short distance apart, the connection being made near their
margin by pins or bolts. As the weighted cord m7 passes between the two parts
of this pull wheel, which parts are without central connection, the said cord is
free to be tightened and moved between the two parts of the pull wheel without

page_text: obstruction. As the pull wheel m¹¹ moves in the direction of the arrow Figure 5
the tension on the weighted cord is relaxed and the said cord is by the descent
of its weight made to travel over and rotate the pulley m8 in one direction.
After a period of rest of the pulley m8 the rotating pull wheel m" comes into
action and tightening the cord causes it to travel in the opposite direction to
that last described. By this last travel of the weighted cord it reverses the
rotation of the pulley m8 and raises the weight. Thus, by the rotation of the
disc or pull wheel m and action of the weighted cord the said cord is made to
travel alternately in opposite directions and rotatory motion in opposite directions
is thereby transmitted to the pulley m8 and through the spur gearing m6, m² to
the vertical screw m" for giving the rising and falling motion to the sliding
headstock and parts carried by it.
We will now describe the construction of the tapping lathe B represented
separately in Figures 9 and 10. In this lathe a short hollow sliding and rotat-
ing slotted centre n is employed carrying at its bottom the chucking tool p, p.
The said sliding and rotating centre n is carried by the bottom bracket of the
headstock m which is capable of a rising and falling motion in the frame or
upright of the machine, the top headstock being stationary. The sliding head-
stock m and parts carried by it are raised and lowered by the vertical screw m³
to which rotary motion in opposite directions is given by mechanism of the
same construction as that described for working the screw m³ of the sliding
headstock of the turning lathe A. Rotary motion is given to the short sliding
centre n of the tapping lathe B directly from the rotating and sliding tool
spindle the said tool spindle being connected to the centre n by a key and
key-way as represented. The tap or tapping tool attached to the spindle q¹ is
marked d. In the fixed part r of the headstock, a sleeves rotates the upper part
of the tool spindle sliding in the said sleeve and being connected to it by a key
and key-way so that the rotation of the said sleeve is transmitted to the said
spindle.
The spindle of the tapping tool is rotated in opposite directions so as to advance
the said tool to and withdraw it from the article under operation simultaneously
with the advance and withdrawal of the centre for chucking and releasing the
article, in the following way. Fixed to the head of the tool spindle q is a
"leader" screw t corresponding with the thread to be cut in the article. The
said "leader" screw works in the screw box or "leader" t fixed to the upright
of the machine. On the top of the rotating sleeve s is a chain wheel and as
the said sleeve is connected to the tool spindle q¹ by a sliding key the rotation
of the said sleeve communicates rotation to the said spindle. By rotating the
chain wheel in opposite directions the spindle 7 is correspondingly rotated
and the "leader" screw t is made to rise and fall in its screw box or "leader" (
and thereby communicate the required sliding motion to the rotating spindle
to advance the tapping tool into and unscrew it out of the article under oper-
ation during the advance and withdrawal of the centre n and its chucking tool p.
The rotary motion in opposite directions of the chain wheel is effected in
the manner best seen in Figures 1, 2 and 5 of the drawings; is a chain
working over the chain wheel 2 on the sleeves and over the larger chain wheel v
fixed on the vertical shaft which carries the two bevil pinions x, y gearing
The
with the large partly bevil toothed wheel on the horizontal shaft w.
shaft w carrying the large toothed wheel z is driven in the manner represented
in Figure 2 from the shaft k through the bevil gearing 2 shaft 3 and bevil
gearing 4. It will be seen by an examination of Figure 5 that the wheel z is
partly plain and partly toothed so that when the toothed part of the said bevil
wheel z gears with the top bevil pinion x, the shaft is rotated in the direction
proper, through the chain wheel chain u and chain wheel, to advance the
tapping tool; and when the bevil wheel z gears with the bottom bevil pinion y
rotary motion in a contrary direction is given to the shaft and the tapping

page_text: tool is withdrawn. The untoothed part of the bevil wheel z provides for the
necessary period of rest of the tapping tool.
The parts of the screwing lathe C on the right hand half of the compound
lathe are constructed and worked in the manner herein before described and
represented with respect to the corresponding parts of the tapping lathe B, a
screwing tool e (see Figure 16) being substituted for the tapping tool; and
the parts of the finishing or face turning lathe D on the right hand half of the
compound lathe are constructed and worked in the manner hereinbefore described
with respect to the corresponding parts of the dressing or turning lathe A on
the opposite side of the compound lathe, a turning tool of the kind represented
in Figure 17 being substituted for the turning tools represented in Figure 13.
The lathes C and D at the right hand side of the compound lathe are geared
together in the manner herein before described with respect to corresponding
parts at the left hand side of the compound lathe (see Figures 1 and 2).
The tools of the several lathes ABC and D act simultaneously upon four
different union joints in the cupped chucks of the intermittent rotating table h
so that a union joint is completed at each rotation of the table . The attendant
stands at the front of the machine and removes the finished joints from the
chucks as they are presented to him and feeds other unoperated cast union
joints to the empty chucks g, the removal of the joints from and feeding of the
fresh joints to the chucks being effected when the intermittent table h has come
to rest and while the four lathes A, B, C and D are operating upon the articles
in the chucks.
Although we have described and represented a compound lathe or machine
in which four different lathes act in succession upon the same article and thereby
finish an article at each rotation of the table yet the different lathes may be used
separately.
And although we have only described and represented the improved lathes
or machines as used in the manufacture of union joints yet we wish it to be
understood that the said lathes or machines may be used for dressing or turning
and screw threading cocks or taps and parts of gas and water fittings and also
for the dressing and screw threading of other articles the necessary turning or
dressing and tapping and screwing tools being substituted for those described
and represented.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that we
claim as the said invention of "Improvements in lathes or machinery for dressing
and forming screws on or in articles":
First: The construction of the sliding and rotating hollow or tubular cross
slotted centre for automatically chucking the articles to be dressed or turned
and the combination therewith of the sliding and rotating spindle for automatic-
ally operating the turning or dressing tool substantially as herein before described
and illustrated in Figures 1, 2, 6, 7, 8, 11, 12 and 17 of the accompanying drawings.
Secondly-The construction of the sliding and rotating short hollow or tubular
cross slotted centre for automatically chucking the articles under operation and
the combination therewith of the sliding and rotating tapping or screwing tool
spindle for automatically tapping or screwing the articles under operation and
the combination with the said chucking centre and tool spindle of a rotating
sleeve to which rotation in opposite directions is given and transmitted to the
tapping or screwing tool spindle substantially as herein before described and
illustrated in Figures 1, 2, 9, 10, 12, 15 and 10 of the accompanying drawings.
Thirdly: The combination with the sliding and rotating tool spindle of the
tapping or screwing lathe and the sleeve for rotating the said tool spindle, of
a leader screw and screw box or leader for regulating the screw or pitch of the
screw to be cut in or on the article being operated upon substantially as herein-

page_text: before described and illustrated in Figures 1, 9 and 10 of the accompanying
drawings.
Fourthly Giving rotary motion in opposite directions to the rotating sleeve
of the tapping or screwing tool spindle of the lathe by means of a chain and
chain wheels in conjunction with two bevil pinions on the spindle of one of the
chain wheels with which bevil pinions a large partly toothed bevil wheel driven
by the lathe alternately gears substantially as hereinbefore described and illus-
trated in Figures 1, 2 and 5 of the accompanying drawings.
Fifthly Giving rotary motion in opposite directions to the vertical screw
for working the sliding headstock of the turning or dressing and tapping and
screwing lathes by means of a weighted cord and a driven double disc or pull
wheel in conjunction with spur gearing the several parts being arranged and
working substantially as herein before described and illustrated in Figures 1,
and 5 of the accompanying drawings.
2
Sixthly Giving the reciprocating motion to the turning or dressing tool
spindle of the lathe by the combination of parts hereinbefore described and
illustrated in Figures 2, 6, 7 and 8 of the accompanying drawings, the said com-
bination of parts consisting of a driven face or crank plate and link jointed
thereto and jointed to the tool spindle by a ball joint substantially as described
and illustrated.
Seventhly Giving an intermittent rotary motion to the table or carrier
supporting the articles to be chucked and dressed or screw threaded by means
of radial arms on the axis or spindle of the said rotating table and a lever
carried on a rotating shaft driven from the driving shaft of the lathe operating
upon the said radial arms substantially as herein before described and illustrated
in Figures 1, 2, 3 and 4 of the accompanying drawings.
Lastly; The combination of a series of turning or dressing and tapping and
screwing lathes of the kinds claimed in the prior claims, in conjunction with
an intermittent rotary table or carrier into a compound lathe or machine for
operating in succession upon the same article carried by the said table substan-
tially as herein before described and illustrated in Figures 1 and 2 of the
accompanying drawings.
Dated the Seventeenth day of January 1899.