IMPROVEMENTS IN MACHINERY FOR STRETCHING AND TESTING WIRE IN THE MANNER COMMONLY KNOWN AS 'KILLING,' THE WIRE SO TREATED TO BE USED FOR TELEGRAPHIC AND FOR ANY PURPOSES FOR WHICH SUCH WIRE MAY BE EMPLOYED
Year: 1871

page_text: PROVISIONAL SPECIFICATION left by Thomas Glazebrook Rylands
at the Office of the Commissioners of Patents, with his Petition, on
the 21st March 1871.
I, THOMAS GLAZEBROOK RYLANDS, of the Firm of Rylands Brothers,
Limited, Wire Drawers and Galvanizers, Church Street, Warrington, in
the County of Lancaster, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN MACHINERY FOR STRETCHING AND TESTING
WIRE IN THE MANNER COMMONLY KNOWN AS 'KILLING,' THE WIRE SO TREATED
TO BE USED FOR TELEGRAPHIC AND FOR ANY PURPOSES FOR WHICH SUCH WIRE
MAY BE EMPLOYED," to be as follows:-
In a shed or similar erection of considerable length I erect a frame,
on one end of which I place a pedestal and therein a shaft to which
I fasten a receiving pulley, to which I fasten one end of a wire. To
this pulley I communicate motion from a longitudinal shaft com-
municating with the above-named pedestal shaft by bevil wheels.
On the other end of the framing I place a recl on which the wire to
be stretched, tested, or "killed" is placed. Between the pedestal and
the reel I erect a pulley, around which I pass the wire to be treated
so often as to cause it to revolve with it without slipping, and from

page_text: thence carry it to and fasten it upon the pulley on the pedestal as
above stated. I give to the pedestal on which the shaft which carries
the pulley is placed a travelling motion herein-after described. To this
pulley I give motion in the same direction and at the same rate as to
the receiving pulley above named. This motion is communicated from
the slotted longitudinal shaft above named by a similar pair of bevils to
that which gives motion to the receiving pulley. The travelling motion
imparted to the pedestal I communicate thereto from the longitudinal
shaft by means of a rack or other equivalent, so that it shall travel at
such rate per cent. as I desire to communicate to the wire undergoing
treatment.
Another form of these improvements consists in placing upon a table
three studs or stands, two of them capable of revolution around the
third, each carrying shafts having the same or a similar amount of
motion on their own axes in the same direction. The shaft which
carries the receiving pulley I make the centre of revolutionary motion
to the other two, so that whilst the receiving pulley derives a certain
amount of motion from the driving machinery I carry the other two
pulleys around it at the per-centage of additional rate with which I
intend to stretch, test, or "kill" the wire.
It is obvious that both the methods referred to above may be modified,
so that the stretching may be differentially derived whilst yet the form
of motion is substantially adhered to.
Thus with respect to the first form I place upon the pedestal which
carries the receiving pulley a pulley having two grooves, and fasten it
to the same shaft to which the receiving pulley is fastened; at the other
end of the frame I erect a similar pulley having two similar grooves; to
these pulleys I give the per-centage of extra motion above the receiving
pulley which I wish to impart to the wire. On the travelling pedestal
I place a pulley having four grooves besides the pulley around which
the wire is lapped. I pass a chain or band around the various grooved
pulleys above named, and therefrom cause a rotatory and cycloidal action
to be communicated to the pulleys on the travelling pedestal.
It is also obvious with regard to the second form that giving motion
to the receiving pulley at a definite rate and placing the reel on a con-
tinuation of the centre thereof, but loose thereupon and imparting to
an arm carrying a stud on which I place a loose pulley having a similar
motion but a per-centage in excess, and so that the delivering side

page_text: thereof shall be in line with the flange of the receiving pulley, by
giving to this arm a revolution in excess as stated in the same direction
as motion is imparted to the receiving pulley I so effect a per-centage of
strain or stretch upon the wire.
There may be other modifications besides those above referred to,
but what I desire to indicate as the distinctive feature of the machinery
that I employ is, the imparting to the wire, in addition to its being
wrapped upon the receiving pulley, another motion direct, cycloidal,
or epicycloidal, which shall impart thereto a per-centage of motion by
) which it is stretched or "killed."