Improvements in Apparatus for Shearing Channel Iron Bars or Beams.
Year: 1894

page_text: Date of Application, 10th Dec., 1894
Complete Specification Left, 6th Sept., 1895-Accepted, 9th Nov., 1895.
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Shearing Channel Iron Bars
or Beams.
We, JAMES SMITH and HUGH WILSON SMITH, both of the Firm of Smith*
Brothers and Company, Kingston Engine Works, Kinning Park, in the County
of Renfrew, Engineers, do hereby declare the nature of this invention to be as
follows:-
This invention, which relates to apparatus for shearing iron or steel bars or
beams of channel or like section, has for its object by the use of an improved
construction and disposition of cutters to effect the shearing of such bars, without
buckling or bending and distorting them.
In carrying out the invention we employ a belt-driven or hydraulic shearing
machine of any usual type and provide it with a bed block or stationary cutter on
which the web of the bar rests horizontally during the shearing operation and
stationary or adjustable side pieces against which the flanges of the bar bear
vertically. The vertically shearing cutter above, which is secured on and actuated
by the hydraulic ram or slide, is composed of a vertical knife adapted to shear the
bar or beam transversely, and a second vertical knife set at right angles thereto
and adapted to cut longitudinally the web or channel part of the bar which is to
be shorn off. The transversely shearing knife is beveled or inclined on one side
from about the point where it meets the longitudinal shearing knife to adapt it for
shearing the web and one side flange simultaneously, and on the other side of its
junction with the latter knife its cutting edge is carried up vertically to some
extent and is then beveled or inclined to adapt it for shearing the second flange of
the bar. The longitudinal knife is also beveled from the point where it meets the.
cross knife at its lower cutting edge and the shearing operation commences at the
web or bottom of the channel the piece being shorn off without bending or
buckling of the bar. The cutting of the web by the longitudinal knife is effected
by shearing action against a stationary knife secured to the bed block or framing'
of the machine immediately under the bar or beam being shorn.
Din 9th dex of December 1894
Improvements in Apparatus for Shearing Channel Iron Bars
or Beams.
We, JAMES SMITH and HUGH WILSON SMITH, both of the Firm of Smith
Brothers and Company, Kingston Engine Works, Kinning Park, in the County
of Renfrew, Engineers, do hereby declare the nature of this invention and in

page_text: what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
This invention, which relates to apparatus for shearing iron or steel bars or
beams of channel or like section, has for its object by the use of an improved
construction and disposition of cutters to effect the transverse shearing of such
bars without buckling or bending and distorting them.
In the accompanying drawings Figure 1 is a front elevation, Figure 2 a vertical
section and Figure 3 a horizontal section of a hydraulic shearing machine of usual
type to which our invention is applied.
In accordance with our invention the machine is provided with a bed knife or
cutter A on which the web of the bar B rests horizontally during the shearing
operation, and stationary or adjustable side pieces C against which the flanges of
the bar B bear vertically. The vertically shearing cutter above, which is secured
on and actuated by the hydraulic ram or slide D is composed of a vertical knife E
adapted to shear the bar or beam transversely and a second vertical knife F set at
right angles or other angle thereto and adapted to cut longitudinally the web or
channel part of the bar B which is to be shorn off. The transversely shearing
knife E is beveled or iuclined on one side as at e, Fig. 1, from about the point
where it meets the longitudinal shearing knife F to adapt it for shearing the web
and one side flange of the bar B simultaneously, and on the other side of its
junction with the latter knife its cutting edge is carried up vertically to some
extent as at e, Fig. 2, and is then beveled or inclined as at to adapt it for
shearing the second flange of the bar B. The longitudinal knife F is also beveled
at from the point where it meets the cross knife E at its lower cutting edge, and
the shearing operation commences at the web or bottom of the channel the piece
being shorn off without bending or buckling of the bar. The cutting of the web
by the longitudinal knife F is effected by shearing action against a stationary
knife G secured to the framing of the machine immediately under the bar or beam B
being shorn.
Our improvements are also applicable to belt driven or other forms of shearing
machines.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
In apparatus for shearing iron or steel bars or beams of channel or like section
the combination with a bed knife or cutter, of a vertical shearing cutter composed
of transverse and longitudinal shearing knives constructed and arranged to operate
substantially as described.
Dated this 5th day of September 1895.