IMPROVE- MENTS IN MACHINERY FOR COVERING WIRE OR STRAND WITH GUTTA PERCHA OR OTHER MATERIAL " PROVISIONAL SPECIFICATION
Year: 1883

page_text: LETTERS PATENT to Alexander Charles Moffatt of 26 College Street in the
City of London and William Hughes Wardale of 80 Bentham Road South
Hackney in the County of Middlesex Engineers for an Invention of "IMPROVE-
MENTS IN MACHINERY FOR COVERING WIRE OR STRAND WITH GUTTA PERCHA
OR OTHER MATERIAL
"
PROVISIONAL SPECIFICATION left by the said Alexander Charles Moffatt
and William Hughes Wardale at the Office of the Commissioners of Patents
on the 9th April 1883.
ALEXANDER CHARLES MOFFATT of 26 College Street in the City of London
and WILLIAM HUGHES WARDALE of 80 Bentham Road South Hackney in the
County of Middlesex Engineers "IMPROVEMENTS IN MACHINERY FOR COVERING
WIRE OR STRAND WITH GUTTA PERCHA OR OTHER MATERIAL
"
This invention has for its object improvements in machinery for covering wire
or strand with gutta percha or other material.
The machine is composed of one right and one left hand worm working
together and confined in a steam jacketted chamber of a suitable form to receive
the two worms. The worms are driven by means of spur or other gear. The
action of the right and left hand worms is to lay hold of and force the covering
material from a feeder or hopper at one end towards the other end of the chamber
and thence into a die box and through a die or dies. The wires to be covered
pass at right angles to the worms into the die box on one side and out on the
other side through the dies and with the covering upon them,

page_text: plate and these are of sufficient internal diameter to give the desired outside sizo
to the coating material.
The mode of working is as follows:-
Steam is led into the steam jackets of the chamber A the hopper Q and the die
box R and when these are sufficiently hot the gearing is set in motion to drive the
worms F. F. Pieces of gutta percha or other coating material to be used for
coating the wire are fed by hand or otherwise into the hopper Q from which they
pass into the chamber A. In its downward passage past the worms the mass
becomes heated, and is thoroughly masticated and it is forced downwards by the
worms in a plastic state through the passages or inlets r. r. into the die box R.
The wires are then drawn forward through the holes in the door through the die
box and centrally through the dies. These wires in their passage through the dies
become uniformly coated. The covered wires are then as usual led through water
to be cooled after which they may be wound on a reel ready for use.
Having thus described the nature of our said Invention and the manner of
performing the same we would have it understood that we claim :-
First. Our improved covering machine substantially as described.
Second. The combination of the chamber A. the two worms F. F'. and die box R
traversed transversely by the wires or strands to be covered, substantially as
described.
In witness whereof we the said Alexander Charles Moffatt and William
Hughes Wardale have hereunto set our hand and seal this sixth day of October
in the year of our Lord One thousand eight hundred and eighty three.
MALIK A FAN