Improvements in Machines for Cross-cutting Angle and Double-angle Iron or Steel Bars.
Year: 1890

page_text: Date of Application, 25th Apr., 1890
Complete Specification Left, 24th Jan., 1891-Accepted, 28th Feb., 1891
PROVISIONAL SPECIFICATION.
Improvements in Machines for Cross-cutting Angle and
Double-angle Iron or Steel Bars.
We, JAMES SMITH, and HUGH WILSON SMITH, of Kingston Engine Works,
Kinning Park, Glasgow, in the County of Renfrew, North Britain, Engineers, do
hereby declare the nature of this invention to be as follows, that is to say :-.
Our said invention has for its object to improve the construction of certain parts
of machines for cross-cutting angle bars of iron or steel and to render such parts
conveniently adjustable or alterable to suit different sizes and forms of bars including
ordinary angle iron and double-angle or Z bars.
In carrying out our invention we fix the moving cutters upon a block suitably
centered and made to vibrate through a small angle by a rotating crank or eccentric
in the ordinary way.
To facilitate explanation it may be assumed by way of
example that a Z bar is to be cut and is placed with its middle part or web hori-
zontal, with the inner flange or member standing upwards and with the outer flange
or member extending downwards. A set of cutters is provided for fixing on the
vibrating cutter block for cutting through the upper and inner flange of the Z bar
and part of the web; and two or more cutters are provided to fix on the block for
acting on the outside of the other angle, one or more of these being L-shaped.
The stationary cutter for the external side of the upper flange. is made
adjustable by means of a wedge which is adjustable by means of a screw and
hand wheel, the cutter being in its innermost position for the broader Z bars
of one series of sizes, and being adjusted further out for smaller sizes of the
same series, the movable cutters being also changed when required. For what
is referred to as one series of sizes there is fixed to the frame a cutter
extending across under the web of the bar and down the inner side of the outer
flange. For another series of sizes which are smaller, a groove is formed in the
frame to receive the outer downwardly extending flange nearer the innermost position
for the inner upwardly extending flange, and the fixed cutter under the web is
changed for one not extending beyond the groove, whilst the movable cutter is
changed for one suitable for the more inward position of the outer flange. It will
be obvious that the same cutting details or some of them can be used for cutting
ordinary angle iron.
Dated this Twenty-fourth day of April 1890.
EDMUND HUNT,
Applicants' Agent.
COMPLETE SPECIFICATION.
Improvements in Machines for Cross-cutting Angle and
Double-angle Iron or Steel Bars.
We, JAMES SMITH, and HUGH WILSON SMITH, of Kingston Engine Works,
Kinning Park, Glasgow, in the County of Renfrew, North Britain, Engineers, 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 :-
Our said invention has for its object to improve the construction of certain parts
of machines for cross-cutting angle bars of iron or steel, and to render such parts
conveniently adjustable or alterable to suit different sizes and forms of bars including
ordinary angle iron and double-angle or Z bars.
In carrying out our invention we fix the moving cutters upon a block suitably
SUQ27

page_text: centered and made to vibrate through a small angle by a rotating crank or eccentric
in the ordinary way.
In a machine for cutting a Z bar, one stationary cutter is
made adjustable by means of a wedge and screw or equivalent device, and other
stationary cutters are provided which are changeable to suit different sizes of
bar.
And in order that our said invention and the manner of performing the same may
be properly understood we hereunto append three sheets of explanatory drawings
to be hereinafter referred to and representing machines and parts as made with our
improvements.
Figure, 1, on Sheet, 1, of the drawings is a side elevation and Figure, 2, is a
horizontal section of a combined shearing, punching, and angle-iron cross-cutting
machine, the present invention, however, relating only to the cross-cutting parts.
Figure, 3, on Sheet, 2, is a side elevation and Figure, 4, on Sheet, 3, is a horizontal
section of a machine exclusively constructed for cross-cutting angle iron; and
Figures, 5, to, 8, show positions of the cutters as adjusted for some of the various
sizes that can be cut in the machine. In these drawings the same reference
letters and numerals are used to mark the same or like parts wherever they are
repeated.
To facilitate explanation, it may be assumed by way of example, that a Z bar, Z,
is to be cut, and is placed as shown in Figures, 3, and 5, to 8, with its middle part
or web, 9, horizontal, with one flange or member, 10, standing upwards, and with
the other flange or member, 11, extending downwards. The moving or vibrating
cutter block, V, which is suitably centered within the massive framing, F, and is
made to vibrate by a crank or eccentric, 12, on a rotating shaft, A, is provided
with a cutter, C1, for cutting through the upward flange, 10, and part or the whole
of the web, 9, and with another cutter, C 2, for acting on the outer side of the
downward Hange, 11, and in some cases on part of the web, 9, such cutter, C 2, or it
might be a combination of two cutters, being L-shaped in the latter case. The
stationary cutter, C3, for the outside of the upward flange, 10, is made adjustable
horizontally upon the fixed framing, F, this adjustment being effected, in the
example shown in Figures 1, and 2, by a wedge, W, which is adjustable across the
back of the cutter, C3, by means of a screw spindle, S, having on it a handwheel H.
This cutter, C3, is adjusted in its innermost position for the broader Z bars of one
series of sizes, and is adjusted further out for smaller sizes of the same series. The
moving cutters, C1, C2, are of course changed for the different sizes when
required.
For one series of sizes, there may be fixed to the frame, F, a cutter extending
across under the web, 9, of the bar, and down the inner side of the downward
flange, 11. For another series of sizes which are smaller, a groove may be formed
in the frame to receive the downward flange, 11; uearer the innermost position for
the upward flange, 10, and the fixed cutter under the web, 9, may be changed for
one not extending beyond the groove, whilst the movable cutter, C 2, is changed
for one more suitable for the more inward position of the downward flange, 11.
We however now prefer, instead of grooving the frame, F, to provide a movable
block; 13, which in one position as shown at the left-hand sides of Figures, 1 to 4,
is closed up and leaves no space or groove, this position being suitable for the
larger sizes of bar, whilst in another position, as shown at the right-hand sides of
Figures, 1, to 4, the block, 13, is adjusted a little way from the solid part of the
framing so as to leave a space or groove for the downward flanges, 11, of the
smaller sizes of Z bar. Cutters, C4, C5, are fixed to the frame, F, and to
the adjustable block, 13, to suit the various sizes of bar to be cut. The stationary
cutters, C3, C4, C5, are indicated by dotted lines in Figures, 1 and 3, but in
Figures, 5, to 8, they as well as the moving cutters, C1, C2, are shown detached
from other parts but in the relative positions in which they are when about to
make a cut. The adjustable block, 13, is held in position by a plate, 14, formed
in the same piece and bolted to the outer side of the frame, F, the bolt holes in the
plate being elongated to allow of the adjustment.

page_text: In Figures, 3, and 4, two modifications of the mechanism for adjusting the
cutter, C3, which acts on the outside of the upward flange, 10, of the Z bar are
shown. In the modification shown at the left-hand side of the said figures, a screw
spindle, S, is arranged to act directly on the cutter, C 3, the spindle being fixed to
the cutter and being acted on by an internally screwed bush, 15, held in a bearing
in the frame, F, and having a handwheel, H, fixed on its outer end.
In the
modification shown at the right-hand sides of Figures, 3, and 4, a wedge, W, is
employed but placed and movable vertically instead of horizontally, and being
formed with or having fixed to it a screw spindle, S, which is acted on by a hand-
wheel, H.
It will be obvious that the same cutting details or some of them can be used for
cutting ordinary angle iron; and that adjusting mechanism may be applied to any
of the cutters instead of or in addition to those hereinbefore described as provided
therewith.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is:-
1. In machines for cross-cutting angle and double-angle iron and steel bars,
making them capable of operating on bars of various sizes by the application of
changeable and adjustable cutters, the parts being arranged and operating substan-
tially as hereinbefore described.
2. Constructing and arranging or combining the cutters and adjusting mechanism
of machines for cross-cutting angle and double-angle iron and steel bars substantially
as hereinbefore described and as shown in Figures, 1, and 2, of the accompanying
drawings.
3. Constructing and arranging or combining the cutters and adjusting mechanism
of machines for cross-cutting angle and double-angle iron and steel bars substantially
as hereinbefore described, and as shown at the left-hand sides of Figures, 3 and 4,
of the accompanying drawings.
4. Constructing and arranging or combining the cutters and adjusting mechanism
of machines for cross-cutting angle and double-angle iron and steel bars substantially
as hereinbefore described, and as shown at the right-hand sides of Figures, 3 and 4
of the accompanying drawings.
Dated this Twenty-second day of January 1891.
EDMUND HUNT,
Applicants' Agent.