Improvements in the Method of Cutting Iron Beams and in Apparatus therefor.
Year: 1892

page_text: Date of Application, 28th Dec., 1892
Complete Specification Left, 25th Sept., 1893-Accepted, 11th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Method of Cutting Iron Beams and in
Apparatus therefor.
I, ADOLF KLOSTERMANN of the City of Cologne in the German Empire,
Gentleman, residing Friesenwall No. 96, Cologne, do hereby declare the nature of
this invention to be as follows:-
According to my invention the iron beam to be cut is placed on a matrix,
suitably shaped to serve as a bed for the beam, and provided with a transverse slot,
directly against which the upper die or knife may be forced. The upper die has a
projecting point, which when forced against the beam produces a hole, which the
semi circular or otherwise suitably shaped cutter, on forcing the die further,
enlarges, cutting away a section which falls through the afore mentioned transverse
slot in the matrix.
C. R. BONNE,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in the Method of Cutting Iron Beams and in
Apparatus therefor.
I ADOLF KLOSTERMANN of Cologne residing at No. 96 Friesenwall in the
Empire of Germany, 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 :-
This invention relates to means for cutting I girders, an operation that has
hitherto mostly been done by hand or by means of hydraulic or other expensive
and cumbersome machine.
The cutting device according to my invention, and fully illustrated in the
accompanying drawings, is intended to work either as a plunger press, lever press
or it may be connected with an hydraulic press.
In Fig. 1 the left half is a section on line 1-II, the right half a section on
line III-IV of Fig. 3.
In Fig. 2 the left half is a side view the right half a section on line V-VI.
In Fig. 3 the left half is a ground plan, the right half a section on
lines VII-VIII of Fig. 2.
The principal parts of the contrivance are :
(1) The steel die a conveniently shaped to serve as bed for the I girder to be
cut, and provided with upstanding cheeks bb. The matrix is provided with a
slot c, which extends downwards as a groove d and towards the sides ends wedge
shaped as shewn at e e.
(2) A cutter F placed directly above the slot aforesaid, which cutter may have
various shapes, examples of which are given in Figs. 5, 6 and 7 but it is always
provided with a shoulder F' which serves as hole stamper.
In operation a I beam or girder is placed on the matrix a, and on forcing
the cutter and matrix against each other (which may be done either in the way
that the knife is fixed, while the matrix is movable or vice versa), the shoulder F
forces through the beam, making a hole in same, and the cutter cuts out a shaving
which would have the appearance approximately as shewn in Fig. 4. The cutter F
may, in order to cut better, be provided with a groove h as indicated by dotted
lines in Fig. 6, two cutting edges are thus formed.
Price Rd l

page_text: The matrix a may consist either of one piece, in which case a special matrix is
necessary for each size beam or it may be adjustable as shewn in the drawing, the
adjustment being effected by screws or in some other known manner.
Likewise the drawing provides for exchanging the pieces a¹.
.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I hereby declare what I
claim is : :-
A contrivance for cutting metal beams or girders consisting of a slotted matrix a
which may be either adjustable or not, and a cutter F, which is forced through the
beam substantially in the manner as described and shewn in the drawings.
Dated this 25th day of September 1802
C. R. BONNE,
57 & 58, Chancery Lane, London, W.C.