IMPROVEMENTS IN SCREWING MACHINES
Year: 1884

page_text: . PROVISIONAL SPECIFICATION.
I JOHN LUCAS of Oldbury Road West Smethwick in the County of Stafford'
Foreman Machinist of the London Screw Company Smethwick do hereby declare
the nature of the said invention for IMPROVEMENTS IN SCREWING MACHINES, to be
as follows:-
In the manufacture of pipe studs I first cut the wire off to the required length
of the studs and then place it in a machine consisting of a hollow revolving spindle
with a cap at one end which cap carries the ordinary worming die the wire being
held by the usual holding dies which hold the wire while the die worms it to about
the middle of its length, Down the centre of the hollow spindle is another hollow
spindle carrying clams which hold dies which grip the wire or stud after it has
been wormed as described and draws it through the worming dio thus completing
the worming the full length of the wire at one setting A third spindle passing
down the centre of the second hollow one causes the clams to open and shut and so
grip and release the wire as required.
Dated this 26th day of Sentember 1884.
PAYNE & TALBOT,
4 and 5, Arcade Chambers,
Corporation Street, Birmingham,
Agents for the Applicant.

page_text: עט
I, JOHN LUCAS, of Oldbury Road Smethwick in the county of Stafford Foreman
Machinist for the London Screw Company do hereby declare the nature of my said
invention for IMPROVEMENTS IN SCREWING MACHINES and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement, reference being had to the drawings bereunto annexed & to 5
the letters & figures marked thereon that is to say :—
These Machines are for the manufacture of pipe studs to produce which I first
cut the wire to the required length of the studs, and then place it in the machine
which consists of a hollow revolving spindle with a cap at one end which cap
carries the ordinary worming die for forming the screw thread the wire being held 1
by the usual holding dies which hold the wire while the die worms it to about the
middle of its length. Down the centre of the hollow spindle is another hollow
spindle carrying clams which hold dies which grip the wire or stud after it has
been wormed a part of the way down its length as described and draws it through
the worming die thus completing the worming the full length of the wire at one 1
setting. A third spindle passing down the centre of the second or inner hollow
spindle causes the clams to open and shut and so grip and release the wire or stud
as required.
REFERRING TO THE DRAWINGS.
Fig. 1 is a longitudinal section of the machine Fig 2 an Elevation of the End 2
at (2). Fig 3 a section through the cap on line (2) Fig 4 a plan of the clams
and Fig 5 a view of the worming die (a) is the outer revolving hollow spindle
with the cap (b) (c) is the inner hollow spindle the distance of the travel of which
can be adjusted and regulated by, the set screws (d) this spindle carrying the
clams (e) which hold the dies (f) which grip the wire or, stud (y) and draws it 2
through the worming die (9). The connection of the cap (6) with the worming die
being that it acts as a chuck to carry the worming die (g) the action of the
worming die being that as the pipe stud is passed through the die worms, or forms
the screw thread upon it, (h) is the third spindle passing down the centre of the
spindle (c) which spindle () is caused by moving the the lever (i) to open and 3
shut the clams (e) by means of the connecting joints (k k) (1 1) Fig 4 and thus grip
or release, the wire as required.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be carried into effect I declare that
what I claim is
1. Forming pipe studs and similar articles by worming them from end to end at
one setting after they have been cut to their required lengths substantially as set
forth.
2. The machine for the manufacture of pipe studs and similar articles sub-
stantially as herein set forth and specified.
Dated this 4th day of November 1884.
3
PAYNE & TALBOT,
4 & 5, Arcade Chambers,
Corporation Street, Birmingham,