Improvements in Apparatus for Screwing and Cutting Tubes, Rods, Bolts, Nuts, and similar Articles.
Year: 1893

page_text: Date of Application, 4th Nov., 1893
Complete Specification Left, 3rd Aug., 1894-Accepted, 29th Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Screwing and Cutting Tubes, Rods,
Bolts, Nuts, and similar Articles.
We PHILIP WINN of Granville Street Birmingham in the County of Warwick,
Manufacturer, and JOHN LANGSTON, Foreman of 15, Gillot Road Edgbaston in
the County of Warwick do hereby declare the nature of this invention to be as
follows:-
The requisite space to set up a screwing and cutting machine not being available
in all situations, and the cost of same being considerable, we provide a loose screwing
head or die box arranged at the end of a hollow spindle in such a manner that it
may be attached to an ordinary lathe thereby economising space and cost.
The general arrangement of the loose head before mentioned may be of any
suitable design, preferably that in which the portions of the die are actuated
simultaneously by means of cams, and the details of the fittings we describe as
below.
On the outer edge of the face plate or die box, we arrange a suitably slotted
clip or link by means of which when the dies have been released from the piece of
work they have screwed, they can be set up again to the same size as before
without the necessity of adjusting them to an arrow mark or similar device as at
present the general practice. The aforesaid link is set to the various positions
required by means of a stud and nut, and the loose ring of the faceplate has a
projection which strikes the end of the clip before mentioned and thereby gives the
required size. The details of this stop motion may be arranged in other ways, but
we prefer the before mentioned.
When cutting or shaping the articles mentioned we arrange a suitable revolving
knife or parting tool either rotating around the article to be manipulated or the
article itself may rotate and the cutter remain stationary, and we provide feed for
the aforesaid cutter by means of a screwed spindle working in a loose cone, the
casing of which engages in a circular rack provided in the faceplate carrying the
cutter thereby revolving the casing of the before mentioned cone. A spring behind
the cone is provided for keeping it up to its bearings and balls are provided to take
up the friction, and we arrange a suitable groove for them to travel in thereby
preventing unequal action.
When it is not convenient to arrange the before described apparatus on the face
plate, we provide a suitable frame or barrel in which the before described parts are
arranged with the difference that in this form the case of the cone is left stationary
and the screwed spindle is revolved, cutting the work and taking feed from the
cone until the backward thrust lifts the cone from its seat which it regains and
recommences to feed only when the cutter has removed a portion of the metal.
We apply such portions of the foregoing as are suitable, to machines having the
die box in one piece with the machine spindle.
Dated this 3rd day of November 1893.
PHILIP WINN.
JOHN LANGSTON.

page_text: COMPLETE SPECIFICATION..
Improvements in Apparatus for Screwing and Cutting Tubes, Rods,
Bolts, Nuts, and similar Articles.
We PHILIP WINN of Granville Street Birmingham in the County of Warwick
Manufacturer, and JOHN LANGSTON, Foreman of 15 Gillott Road, Edgbaston in
the County of Warwick do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
Our invention has for its object improvements in apparatus for screwing and
cutting tubes, rods, bolts, nuts and similar articles with a view to facilitating the
operations in connection therewith.
In order that our invention may be clearly understood and more easily carried
into practice, we have appended hereunto a double size sheet of drawings upon
which―
Figure 1, is an elevation of a bench screwing machine with our invention
attached.
Figure 2, shows one form of our invention as applied to a loose head for fixing on
to an ordinary lathe.
Figures 3 & 4 are front elevations of same showing the action of our said
invention.
Figure 5, is a side elevation of our improved cutting-off arrangement.
Figure 6, is a front sectional elevation of the same.
Figure 7, shows another modification of our cutting-off arrangement.
On the outer edge of the face plate or die box A, we arrange a suitable slotted
clip or link B by means of which when the dies C are released from the rod or tube
they have screwed, they can be readily set up again to the same size as before
without the necessity of readjusting them to an arrow mark or similar device as is
at present the general practice. The aforesaid link B is made adjustable, and is
set to the various positions, by means of a stud and nut D which holds it fast to the
face plate and the loose ring a' of the face plate has a projection E which strikes
the end of the link before mentioned, thereby setting the dies C back to the same
position as they were before being released. To alter the clip from one size to
another it is only necessary to ease the nut D and by means of the slot move it
round to the required size which is marked upon the face plate in the usual way as
seen at a² Figure 2.
Figure 3, shows the dies in their cutting position, the projection E now being
against the lower end of the link B but when the rod or tube is released as seen at
Figure 4, the projection E comes against the opposite end of the link and thereby
prevents the dies being opened an unnecessary distance.
The details of this stop motion may be arranged in other ways, but we prefer the
before mentioned.
In cutting or shaping the articles before mentioned we arrange a suitable revolving
knife F, or a parting tool may be used, either rotating around the article to be
manipulated, or the article itself may rotate and the cutter remain stationary, and
we provide feed for the aforesaid cutter by means of a screwed spindle G working
in a loose cone H, the said spindle being revolved by any of the attachments now
in general use for ordinary cutters, or by preference in the following manner.
We form upon the front of the face plate L, a casing J which is bored out a
conical shape to contain the before mentioned cone H, this said cone being screwed,
to receive the spindle G which has at its upper end a small gear wheel M engaging
with corresponding teeth K' formed upon a loose rack K. We also form upon the
back of the face plate at N a fixed rack N¹ similar to the one shewn at K¹ but
containing several teeth more so that by gearing the two racks together by small
pinions in any suitable position the front rack K' will travel slightly quicker than

page_text: A spring P 18 provided
the other, thereby putting a certain feed upon the cutter.
for keeping the cone to its work, and also to allow for any irregularities in the
article being cut, as any backward thrust lifts the cone from its seat which it
regains and recommences to feed only when the cutter has removed a part of the
metal. We also provide balls R running in a suitable groove thereby reducing
friction and preventing unequal action.
When it is not convenient to arrange the before described apparatus on the face
plate, we provide a suitable frame or barrel S shewn at Figure 7 which is threaded
at its base T to screw on to the article U to be cut, and containing a cutter F which
is revolved horizontally by means of a screwed spindle G having a square head G
to take a suitable handle or spanner. The spindle G passes through a cone H,
which is screwed to receive it, this said cone being held to its seat by a spring P
and ball bearings R. It will therefore be seen that by revolving the spindle G, the
cutter F is brought to its work, and the cone H and the spring P take any
backward thrust in the same manner as before described with reference to
Figures 5 & 6.
We apply such portions of the foregoing as are suitable; to machines having the
tool box in one piece with the machine spindle.
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. The improvements in apparatus for screwing and cutting tubes, rods, bolts,
nuts and similar articles substantially as and for the purposes herein set forth and
shewn upon the drawings.
2nd. The arrangement of slotted clip and stop substantially as hercin set forth
and described.
3rd. The arrangement of cutting-off apparatus in combination with a cone device
and differential motion for feed, substantially as set forth in the drawings and
described herein.
4th. The combination of cone feed, substantially as set forth and described herein,
with outer case, for the purposes set forth.
Signed his Dist day
In the presence of
JOHN FORD,
70, Alston Street, Birmingham.
PHILIP WINN.
In the presence of
JOHN FORD,
70, Alston Street, Birmingham.
Signed this 31st day of July 1894.
In the presence of
FRANK S. TRESTAIN,
Elmore's Wire Co., Ld.,
Hunslet, Leeds.
JOHN LANGSTON.
Signed this 31st day of July 1894.
In the presence of
FRANK S. TRESTAIN,
Elmore's Wire Co., Ld.,
Hunslet, Leeds.
JOHN LANGSTON.