Improvements in Machinery for Dividing or Severing Metal Bars of Various Sections.
Year: 1896

page_text: Date of Application, 6th Feb., 1896
Complete Specification Left, 5th Nov., 1896-Accepted, 5th Dec., 1896
PROVISIONAL SPECIFICATION.
Improvements in Machinery for Dividing or Severing Metal Bars of
Various Sections.
1, FREDERICK SHIRTLIFF, of Newlands, Ryde, in the Isle of Wight, Engineer,
do hereby declare the nature of this invention to be as follows, that is to say :-
My said invention has for its object the dividing or severing of metal bars of
various sections in a new and improved manner; and it consists in constructing,
and arranging machinery as hereinafter described to operate on a bar in a manner
the principal characteristic of which is the application of a torsional shearing
action.
In carrying out my invention according to one modification I fit two disks near
together in circular guides or bearings in suitable framings. The disks are
vertical and have the same horizontal axis. Each disk has jointed to it a lever
arranged to be acted on by an eccentric or cam on a rotating shaft; and the two
eccentrics or cams and the levers are arranged so that the rotation of the shaft
tends to turn the two disks in opposite directions in their bearings. In an open
part of each disk one or more movable jaws are fitted to suit the section of bar to
be operated on. Thus in the case of a bar of T-section two jaws are provided in
ench disk to enter the angles of the bar, and are movable in inclined guides formed
in the disk. A T-bar to be divided is passed through the two disks with its cross
web undermost and resting on the two levers which are then horizontal, the part
of the bar at which the division is to take place being placed exactly between the
two disks. Then on the shaft being turned the eccentrics or cams first raise the
T-bar, and the bar encountering the movable jaws makes them, by the action of
their inclined guides, move upwards and inwards until the levers and jaws together
firmly grip the bar. The continued action of the eccentrics or cams next gives
opposite turning movements to the two disks, and with a twist or torsional shearing
action the T-bar becomes divided or severed.
Toggle levers, or screws, or other suitable mechanism may be substituted for
the eccentrics or cams; or hydraulic cylinders may be employed. Instead of the
turning of the disks being due to a continuation of the movement for causing the
bar to be gripped, it may be effected by separate mechanism.
Dated this Fifth day of February 1896.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Machinery for Dividing or Severing Metal Bars of
Various Sections.
1, FREDERICK SHIRTLIFF, of Newlands, Ryde, in the Isle of Wight, Engineer,
do hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement, that is to say :-
My said invention has for its object the dividing or severing of metal bars of
Pain Rd 1

page_text: various sections in new and improved manner; and it consists in constructing
and arranging machinery as hereinafter described to operate on a bar in a manner
the principal characteristic of which is the application of a torsional shearing
action.
In carrying out my invention according to one modification I fit two disks near
together in circular guides or bearings in suitable framings. The disks are vertical
and have the same horizontal axis; and they are fitted and combined with parts
for gripping the metal bar and for turning them in opposite directions so as to
sever the bar by torsional shearing action.
The gripping parts may be modified for operating on bars of various sections.
On an accompanying sheet of explanatory drawings the parts are shown for
operating on a bar of T-section, as an example.
Figures, 1, 2, 3, and 4, are a plan a sectional side elevation, an end elevation and
an opposite side elevation, and Figures, 5, and 6, are vertical sections showing the
gripping parts as open for receiving the T-bar.
The disks, A, B, are externally circular and fitted so as to be capable of turning
in bearings, C, in frames, D, there being a pair of bearings for each disk, the parts
for turning each disk being partly between its two bearings. In each disk two
jaws or grippers, E, are provided to enter the angles of the T-bar, F, (shown
inverted in Figures, 2, and 4) and these jaws are movable in inclined guides formed
in the disk. The T-bar, F, to be divided is passed through the two disks with its
cross web undermost and resting on two levers, G, H, which are then horizontal
or nearly so, the part of the bar at which the division is to take place being placed
exactly between the two disks. The levers are the parts by means of which the
disks are turned, the disk, A, having jointed to it one lever, G, which extending
across the axis of the disks has its further end jointed to the strap of an eccentric,
on a shaft, K, to which the motive power is to be applied. The other disk, B,
which is to turn in the opposite direction has the lever, H, jointed to it on the side
nearer the shaft, K, the lever extending inwards and having jointed to its inner
end a plate, L, fitted to bear up against the bottom of the T-bar. The outer end
of the lever, H, is jointed to the strap of a second eccentric, M, on the shaft, K.
On the shaft, K, being turned the eccentrics acting on the levers, G, H, first
raise the T-bar and the bar encountering the movable jaws, E, makes them by the
action of their inclined guides in the disks, move upwards and inwards until the
levers and jaws together firmly grip the bar. The continued action of the eccentrics
or cams next gives opposite turning movements to the two disks, and with a twist
or torsional shearing action, the T-bar becomes divided or severed.
Toggle levers, or screws, or other suitable mechanism may be substituted for
the eccentrics or cams; or hydraulic cylinders may be employed. Instead of the
turning of the disks being due to a continuation of the movement for causing the
bar to be gripped it may be effected by separate mechanism.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :
The constructing and combining of parts of machinery for dividing or severing
metal bars of various sections, in a nanner to operate with a torsional shearing
action substantially as hereinbefore described.
Dated this Fourth day of November 1896.
EDMUND HUNT,
Applicant's Agent.