Improved Machine for Shearing Channel and other like Irons.
Year: 1894

page_text: Date of Application, 31st Dec., 1894
Complete Specification Left, 16th Sept., 1895-Accepted, 9th Nov., 1895
[Communicated from abroad by JOSEPH ARTITUR VERNET, of Dijon (Côte d'Or),
France, Engineer.]
Improved Machine for Shearing Channel and other like Irons.
I, ERNEST DE PASS, of 78 Fleet Street, in the City of London, Fellow of the
Chartered Institute of Patent Agents, do hereby declare the nature of this
invention to be as follows:-
This invention relates to an improved shearing machine designed to be worked
by hand or power, and to shear or cut channel irons, girders, rails, angle irons and
other irons of special section, on the principle of imparting a twist or torsion
thereto at the place where the shearing is to take effect.
In a shearing machine constructed according to my invention the shearing tools
or blades, which are shaped to correspond to the irons to be cut or sheared, are
carried by two side pieces or checks of wrought or cast iron placed face to face,
and said blades are arranged centrally therein. One of these side pieces or
checks is stationary, while the other is movable in suitable guides, and they are
held one against the other by screws or bolts passing through segmental slots."
The movable side piece is caused to turn or pivot, in order to give the necessary
twist to the bar, by any suitable mechanism, such as a rack at each end thereof
engaged by pinions driven by a worm-wheel, or other suitable arrangement.
On each side of the cutting tools, a block or rest piece is or may be fitted for
the flanges of the iron to rest against after it is inserted between the tools which
grip it tightly.
The turning movement of the movable side piece or cheek, causes the tools or
blades to twist the portion of the iron bar situated between them, and to shear its
outer portions from the rest of the bar which is held between the tools of the
stationary side piece or cheek. This movement, however, does not completely
sever the bar, as the central part is only twisted and not actually cut. A further
movement about a different centre is therefore imparted to the movable piece to
completely cut the bar. For this purpose, the driving mechanism is so arranged
as to allow one end of the side piece or cheek to come to rest and remain stationary
whilst continuing to move the other end. This displaces the tools or blades
sufficiently to completely sever the bar.
If desired, and according to the nature of the work to be done, one of the ends
of the movable side piece or cheek may be wholly or partially stationary, or one of
its ends may be arranged to turn quicker than the other.
Dated this 21st 1o. of Dearmbo 1904
ERNEST DE PASS,
78 Fleet Street, London, and 6 Victoria Street, Nottingham,
Chartered Patent Agent.

page_text: Improved Machine for Shearing Channel and other like Irons.
I, ERNEST DE PASS, of 78, Fleet Street, in the City of London, Fellow of the
Chartered Institute of Patent Agents, 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, reference being had
to the accompanying drawings and to the letters and figures marked thereon,
that is to say :-
This invention relates to an improved shearing machine, designed to be worked
by hand, or power, and to shear or cut channel irons, girders, rails, angle irons,
and other irons of various section, wherein is employed a stationary and a
movable cutter, each of which embraces the iron to be cut upon all sides, the
movable cutter moving axially about the iron and severing the same with a
shearing cut.
I have shown by way of example in the accompanying drawings, the arrange-
ment I have adopted, while reserving to myself the right to modify the same as
practice may suggest.
Fig. 1 is an elevation of the shearing machine ready for cutting.
Fig. 2 shows the same at the moment that an iron has been cut.
Figs. 3 and 4 show respectively the general arrangement of the pinion F and
rack E before and after the working.
The machine comprises two side pieces or checks A, B, of wrought or cast iron,
held one against the other by screw bolts fixed in the side piece A which rests
on two feet. Each side piece or cheek carries blades or tools C shaped to correspond
to the kind or irons to be cut.
I pass the bar to be cut into the space D, for its reception, between the tools,
and cause the moveable side piece B to turn or pivot by mechanism acting on
racks E, E, this side piece taking for its axis the bar to be cut, which is held
between the tools or blades centrally of the machine. The movable side piece, in
turning, moves axially about the iron bar and severs the same with a shearing cut.
As there remains in the bar a small central part which is not wholly cut, at a
certain moment the rack E, in which, as well as from the pinion F, some teeth are
missing, stops, while the other rack E¹ continues its course, and by displacing the
central point of the axis, finally cuts the bar.
If necessary, and according to the nature of the work to be done, one end of the
novable side piece or check may be kept stationary, or one of the ends of this
cheek may be caused to turn more quickly than the other.
The racks for actuating the movable side piece or check are worked by pinions
rotated by worm gearing, but any other convenient arrangement of mechanism
may be employed for actuating it.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what
1 claim is :-
1. The improved machine for shearing channel and other like irons by torsion,
and characterised essentially by the employment of two side pieces or cheeks,
one of which, carrying the mechanism, is fixed and rests on feet, and the
other, which is movable, taking as its axis the iron bar to be cut, substantially as
described.
2. In a machine for shearing chaunel and other like irons, the combination with
a stationary and a movable side piece or cheek having coincident apertures of the
shape of, and adapted to receive, the iron bar to be cut, of means for turning said

page_text: movable side piece or cheek about the iron bar as an axis, and means for finally
moving said piece or cheek transversely to the axis of said iron bar, substantially
as described and shown with reference to the annexed drawings.
Dated this 16th day of September 1895.