An Improved Machine for Cutting and Screwing Tubes or other Articles.
Year: 1885

page_text: An Improved Machine for Cutting and Screwing Tubes or other
Articles.
WILLIAM DEVOLL Melbourne Villa Sutton Road Erdington, near Birmingham
in the County of Warwick Engineer do hereby declare the nature of my said
invention for AN IMPROVED MACHINE FOR CUTTING AND SCREWING TUBES OR
OTHER ARTICLES to be as follows:-
The object of this invention is to produce or make a machine in which tubes or
other articles, may be cut to any required length, and afterwards screwed, without
the neccessity of changing and resetting either the cutting off apparatus or the
screwing dies, the said machine being also fitted with two spur wheels having
different diameters, by which means the machine is made to work at a slow speed
for large tubes and at a quicker speed for small tubes.
For this purpose, I form the base plate of the machine, of the shape or configu-
ration shewn at A in Plan and A A in End Elevation and A in Sectional Elevation,
having at one end a recess, or slide, with angle sides as B. B. End Elevation,
running half the length of the Base Plate, and planed true to receive a sliding
Headstock as shewn at C. The said Headstock C is moved along the Base Plate,
by means of a Pinion D, which gears into a Rack E. formed in the bottom of the
Headstock C. in the manner shewn in Sectional Elevation, the Pinion being keyed
on one end of a Spindle F. which revolves in a Bearing G. formed in the Base
Plate in the manner shewn in End Elevations, and Plan, the other end of the
Spindle is formed square for a Handle as shewn. The Headstock C. is fitted with
a hollow Shaft H. which revolves in the two Bearings I. I fitted to receive it in the
manner shewn in Plan, Sectional and End Elevations. The said hollow Shaft H.
has a hole throughout its length, in which are fitted two Dies of the shape, or
configuration shewn at J. J. in End and Sectional Elevations, for the purpose of
holding the Tubes. The hollow Shaft H. is also fitted with two set Pins,
or Screws K. K. for the purpose of tightening the Dies J. J. on to the Pipes or
Tubes. The points of these set Pins, are sunk into the Dies to prevent the Dies
being withdrawn laterally, when a Pipe, or Tube is inserted, or withdrawn, the
whole being formed and fitted in the manner shewn on the accompanying Drawing.
A double Spur Wheel having different diameters L L. is fitted on the outer end
of the hollow Shaft H (or may be formed in one piece with it, as shewn in

page_text: Sectional Elevation) and is driven by a double Pinion having different diane-
ters M M. of the same relative proportion as the Wheels L' L. viz. two to one, and
four to one, which I prefer, but other proportions may be used.
The said double Pinion M¹ M. being formed in one piece is fitted to one end of
the Shaft N. (by means of a sliding Feather Key), which revolves in Bearings O. O.
formed in the Headstock C.
Motion is given to this Shaft by means of the pair of Mitre, or Bevel Wheels P. P.
one of which is keyed on the Shaft N. and the other, on one end of the Counter-
shaft Q. which revolves in a Bracket Bearing R. formed on the Headstock C' the
other end of the said Shaft is fitted for a Handle as S. the whole formed and fitted
in the manner shewn in Sectional, End, Elevations and Plan. On the other end of
the Base Plate and opposite the Headstock C I form a Pedestal, or Bracket T,
which terminates in the shape of a Jaw at the top, with two eyes U. U. which are
bored out to receive a Bolt V. A projecting Arm W. which forms a rest for the
two Arms X. Y. also forms a part of the Pedestal.
The Jaw at the top of the Pedestal U. U. is formed to receive the ends of two
radial Arms X. Y. which are fitted side by side, in the manner of a Hinge Joint,
and kept in position by the through Bolt V: The Tube Cutter, or Cutting off
Apparatus is formed on the end of the Arm X and consists of an ordinary revolving
Roller Cutter having a Knife Edge, (or a Cutting off Apparatus of the kind shewn
at Fig. 3 may be used if prefered,) in both cases the Cutter being propelled
against the Tube, by means of the Hand Wheel, and Screw, which is connected to
the Cutter in the usual manner.
The Screwing Stock Y is here shown fitted with a solid Die, but open Dies may
be used if prefered and are equally suitable.
Referring to the Drawing, the Sectional Elevation End Elevations, and Plan
shew the Screwing Stock Y in its position for screwing a Tube, resting on the
projection W. and central with the Machine Spindle, and also shews the Cutting off
Apparatus X. swung back out of the way of the Tube, when not required for
cutting off.
Fig. 2. is an End Elevation shewing the Cutting off Apparatus X. resting on
the projection W. and in position for cutting off any length of Tube, the Screwing
Stock, and Arm Y having been swung back out of the way as shewn.
This Machine is here shewn to be worked by Hand but may also be worked by
Power.
The Sectional Elevation shews the small Pinion M in gear with the large
Wheel L for cutting or screwing large Tubes, the speed of the Pinion being four to
one of the Wheel. When a quicker speed is required for small Tubes, I slide tho
double Pinion M M off the Spindle N and after reversing it, I replace it on the
Spindle and slide the larger Pinion M into gear with the small Wheel L¹ in the
manner shewn at Fig. 1 the proportion of speed will then be as two of the Pinion
to one of the Wheel.
The Action is as follows:
If a Tube is required to be cut shorter and then screwed, I bring down the
Cutter Arın X until it rests on the projection W. when it is central with the
Machine Spindle and ready for cutting. I then lift up the Screwing Stock Y and
move it back out of the way of the Tube in the manner shewn at Fig. 2. I then
place the Tube in the Machine between the two gripping Dies J. J. and pass as
much of the Tube through the hole in the Cutter Arm X as is required to be cut
off, I then tighten the Dies on the Tube, by screwing up the two set Pins K. K
equally. If the Handle S be now turned to the right, motion will be given to the
Spindle and Dies by means of the Wheel gear, and the Tube will thereby revolve
in the Cutter Arm X in the direction of the arrow, or towards the operator. The
Cutter may now be screwed up against the Tube by the Hand Wheel and Screw,
until the Tube is cut off, the Tube being held to the Cutter, by the Vee Shaped
Bearing in the Cutter Arm X. An oblong slot hole Z is formed in the eye of the
Cutter Arm X so as to allow it to adjust itself to the Tube while cutting off.

page_text: If the Tube in the Machine is to be screwed I turn the Handle S¹ and slide the
Headstock C backwards a short distance by means of the Rack E. and Pinion D.
as hereinbefore described and thereby withdraw the Tube from the Cutter Arm X,
I then lift up the Cutter Arm X and move it back out of the way, and bring down
the Screwing Stock on to the projection W. where it fits into a recess formed to
receive it for the purpose of preventing any lateral strain on the Dies when
screwing. I then slide the Headstock C forward again until the end of the Tube
enters the screwing Dies. If the Handle S. be now turned, the Tube will revolve,
as hereinbefore described, and if at the same time a slight pressure be put on the
other Handle S₁ the Tube will be propelled forward until it gets a start inside the
Dies. The action of the screwing Die, will then continue to draw the Tube and
Headstock C (which is free to slide) forward until the Tube is screwed the required
distance. If the Handle S, be now turned in the opposite direction the motion
will be reversed, and the Tube will then travel backwards with the Headstock C,
until it is out of the screwing Die, it may then be removed from the Machine by
unscrewing the two set Screws K. K. when the process may be repeated.
By this means both the Cutting off Apparatus X. and Screwing Stock Y are
always ready for instant use, and do not require changing or setting, as both of
them radiate on one centre or Bolt V, they are thereby self centred, and self
adjusting to the Tube, if it does not revolve quite true.
... 3149 1

page_text: COMPLETE SPECIFICATION.
An Improved Machine for Cutting and Screwing Tubes or other
Articles.
WILLIAM, DEVOLL, Melbourne Villa, Sutton, Road, Erdington, near Birmingham
in the County of Warwick, Engineer I do hereby declare the nature of my said
invention for AN IMPROVED MACHINE FOR CUTTING AND SCREWING TUBES, OR
OTHER ARTICLES, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
-
The object of this Invention is to produce or make a Machine in which Tubes or
other Articles may be cut to any required length, and afterwards screwed without
the necessity of changing and resetting either the cutting off apparatus or the
screwing Dies, the said Machine being also fitted with two Spur Wheels having
different diameters, by which means the Machine is made to work at a slow speed
for large Tubes and at a quicker speed for small Tubes.
For this purpose I form the Base Plate of the Machine, of the shape, or
configuration shewn at A in Plan Fig. 7 and A. A. in End Elevations Figs. 4 & 6
and A in Sectional Elevation Fig. 5 having at one end a recess, or slide with
angle sides as B. B End Elevation Fig. running half the length of the Base
Plate, and planed true to receive a sliding Headstock as shewn at C. The said
Headstock Ĉ is moved along the Base Plate by means of a Pinion D, which gears
into a Rack E formed in the bottom of the Headstock C in the manner shown in
Sectional Elevation Fig. 5 the Pinion being keyed on one end of a Spindle F
which revolves in a Bearing G formed in the Base Plate in the manner shewn in
End Elevations Fig. 4 & 5 and Plan Fig. 7 the other end of the Spindle is formed
square for a Handle as shewn. The Head-stock C is fitted with a hollow Shaft H,
which revolves in the two Bearings I. I. fitted to receive it in the manner shewn
in Plan, Fig. 7 Sectional and End Elevations Figs. 4. 5 & 6.
Shaft H has a hole throughout its length, in which are fitted two Dies of the shape,
or configuration shewn at J. J. in End and Sectional Elevations Figs. 5 & 6 for the
purpose of holding the Tubes. The hollow Shaft H is also fitted with two set Pins,
or Screws K. K. for the purpose of tightening the Dies J. J. on to the Pipes or
Tubes. The points of these set Pins are sunk into the Dies to prevent the Dies
being withdrawn, laterally when a Pipe or Tube is inserted or withdrawn, the whole
being formed and fitted in the manner shewn on the accompanying Drawings.
The said hollow
A double Spur Wheel having different diameters L L is fitted on the outer end
of the hollow Shaft H (or may be formed in one piece with it as shewn in Sectional
Elevation Fig. 5) and is driven by a double Pinion having different diameters M¹ M.
of the same relative proportion as the Wheels L L viz:-two to one, and four to
one which I prefer, but other proportions may be used.
The said double Pinion M¹ M. being formed in one piece is fitted to one end of
the shaft N (by means of a sliding Feather Key) which revolves in Bearings O. O.
formed in the Headstock C.
Motion is given to this Shaft by means of the pair of Mitre, or Bevel
Wheels P. P. one of which is keyed on the Shaft N, and the other on one end of

page_text: the Countershaft Q which revolves in a Bracket Bearing R, formed on the
Headstock C, the other end of the said Shaft is fitted for a Handle as S. the whole
formed and fitted in the manner shewn in Sectional, End Elevations and Plan
Figs. 4. 5. 6 & 7. On the other end of the Base Plate and opposite the
Headstock C, I form a Pedestal, or Bracket T which terminates in the shape of
a jaw at the top with two eyes U. U. which are bored out to receive a Bolt V.
A projecting Arm W. which forms a rest for the two Arms X. Y. also form a part
of the Pedestal.
The jaw at the top of the Pedestal U. U. is formed to receive the ends of two
radial Arms X. Y. which are fitted side by side in the manner of a Hinge Joint
and kept in position by the through Bolt V. The Tube Cutter, or Cutting off
Apparatus is formed on the end of the Arm X and consists of an ordinary
revolving Roller Cutter having a Knife Edge (or a Cutting off Apparatus of the
kind shewn at Fig. 3 may be used if prefered) in both cases the Cutter being
propelled against the Tube by means of the Hand Wheel and Screw, which is
connected to the Cutter in the usual manner.
The Screwing Stock Y, is here shewn fitted with a solid Die but open Dies may
be used if preferred, and are equally suitable.
Referring to the Drawing the Sectional Elevation End Elevations, and Plan
Figs. 4. 5. 6 & 7 shew the Screwing Stock Y. in its position for screwing a Tube,
resting on the projection W. and central with the Machine Spindle, and also shews
the Cutting off Apparatus X, swung back out of the way of the Tube when not
required for cutting off.
Fig. 2 is an End Elevation, shewing the Cutting off Apparatus X resting on the
projection W, and in position for cutting off any length of Tube, the Screwing
Stock and Arm Y, having been swung back out of the way as shewn.
This Machine is here shewn to be worked by Hand, but may also be worked by
Power.
The Sectional Elevation Fig. 5 shews the small Pinion M in gear with the large
Wheel L for cutting, or screwing large Tubes, the speed of the Pinion being four
to one of the Wheel. When a quicker speed is required for small Tubes, I slide
the double Pinion M¹ M off the Spindle N and after reversing it, I replace it on
the Spindle and slide the larger Pinion M¹ into gear with the small Wheel L', in
the manner shewn Fig. 1 the proportion of speed will then be as two of the
Pinion to one of the Wheel.
The action is as follows:
If a Tube is required to be cut shorter, and then screwed, I bring down the
Cutter Arm X, until it rests on the projection W, when it is central with the
Machine Spindle, and ready for cutting, I then lift up the Screwing Stock Y, aud
move it back out of the way, of the Tube in the manner shewn at Fig. 2. I then
place the Tube in the Machine between the two gripping Dies J, J, and pass as
much of the Tube, through the hole in the Cutter Arm X, as is required to be cut
off, I then tighten the Dies on the Tube, by screwing up the two set Pins K. K.
equally. If the Handle S, be now turned to the right, motion will be given to the
Spindle and Dies, by means of the Wheel gear, and the Tube will thereby revolve
in the Cutter Arm X, in the direction of the arrow, or towards the Operator. The
Cutter may now be screwed up against the Tube by the Hand Wheel and Screw,
until the Tube is cut off, the Tube being held to the Cutter by the Vee Shaped
Bearing in the Cutter Arm X, an oblong Slot hole Z, is formed in the eye of the
Cutter Arm X, so as to allow it to adjust itself to the Tube while cutting off.
If the Tube in the Machine is to be screwed, I turn the Handle S¹, and slide the
Headstock C, backwards a short distance by means of the Rack E, and Pinion D,
as hereinbefore described, and thereby withdraw the Tube from the Cutter Arm X,
I then lift up the Cutter Arm X and move it back out of the way, and bring down
the Screwing Stock on to the projection W, where it fits into a recess, formed to
receive it, for the purpose of preventing any lateral strain on the Dies when
screwing, I then slide the Headstock C forward again until the end of the Tube

page_text: enters the screwing Dies. If the Handle S, be now turned, the Tube will revolve,
as hereinbefore described, and if at the same time, a slight pressure be put on the
other Handle S¹, the Tube will be propelled forward until it gets a start inside the
Dies. The action of the Screwing Die will then continue to draw the Tube and
Headstock C, (which is free to slide) forward until the Tube is screwed the required
distance. If the Handle S, be now turned in the opposite direction, the motion
will be reversed, and the Tube will then travel backwards with the Headstock C,
until it is out of the screwing Die, it may then be removed from the Machine by
unscrewing the two set Screws K. K, when the process may be repeated. By this
means both the Cutting off Apparatus X, and Screwing Stock Y. are always ready
for instant use, and do not require changing or setting, as both of them radiate on
one centre or Bolt V, they are thereby self centred, and self adjusting, to the Tube,
if it does not revolve quite true.
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
The
1. In Machines for Cutting and Screwing Tubes, or other Articles.
combination of two radial Arms X. Y. radiating on one axis, and independent
of each other, one Arm having a Cutter, or Cutters for cutting off Tubes, or other
Articles, and the other having a Die, or Dies for screwing Tubes, or other Articles,
with a moveable Headstock C having a double Spur Wheel L¹ L. of different
diameters, and also a double Pinion M. M¹ of different diameters, capable of giving
a quick, or slow speed, substantially as herein before described and illustrated by
Figures 1 to 7 both inclusive of the accompanying Drawings.
2nd The arrangement and combination of parts constituting the Machine for
Cutting and Screwing Tubes, or other Articles as herein before described and
illustrated by Figures 1 to 7 of the accompanying Drawings.
Dated thi 20th down of Aust 100%