Improved Manufacture of Compound Metal for Cutting Tools for Working Stone or other Substances.
Year: 1895

page_text: Date of Application, 22nd Jan., 1895-Accepted, 2nd Mar., 1895
COMPLETE SPECIFICATION.
Improved Manufacture of Compound Metal for Cutting Tools for
Working Stone or other Substances.
-We, JAMES WALLACE WYCKOFF, Quarry Superintendent, and JOHN
MAXWELL WETTON, Engineer, of Jacobsville, in the County of Houghton, State
of Michigan, United States of America, 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:-
Our invention relates to certain new and useful improvements in the construction
of metal for various uses, and it consists of the matter hereinafter described and
claimed and illustrated in the accompanying drawings, in which
Figure 1 is a view in perspective of a piece of metal embodying our invention,
showing a portion broken away.
Figure 2 is a view in perspective showing a piece of metal pipe embodying our
invention.
Our invention is intended to provide a metal for cutting purposes having hard
cutting particles integrally united therewith. We will describe our invention as
adapted and applied for the construction of blades and pipes used for sawing,
drilling or cutting stone, as an example of the uses to which the invention may
be put.
It is well understood that at present, stone sawing is done by gangs of soft iron
blades with sand or crushed steel washed into the cut or kerf to assist in the work.
In core drilling or prospecting also it is well to understand that common pipe is
used for the cutting bit, and the operation of the same, with crushed steel put into
the hole occasionally, does the cutting.
The object of our present invention is to provide a metal for this analogous
purposes wherein crushed steel particles of any desired size, or other forms of steel,
as of wire, or other particles of metal fragments are rolled into the metal of which
the saw blades or pipes are constructed, which when properly tempered give fixed
cutting teeth integral with the blades or pipes. It will be apparent that the soft
iron, wearing any faster than the hardened steel, leaves rugged cutting stationary
teeth or projecting cutting edges to do the work formerly done by the loose sand
or crushed steel employed in connection with the soft metal blade or pipe.
Blades or pipes constructed in accordance with our invention will evidently
facilitate and expedite the work to be done, enabling the work to be done not only
faster, but in a superior manner also and at less expense.
In the drawings A represents the soft metal or body of the blade or the pipe.
B represents steel particles rolled thereinto.
We prefer to construct the metal, of which the blades or pipes are constructed in
two parts, the crushed steel being preferably rolled into each of said parts.
Between said parts we prefer to locate, for same purposes, steel wire, said parts
with the wire there between being welded together and suitably tempered. This
construction serves.to give a most satisfactory cutting edge on the blade.
A' and A² represent the two parts of the metal. In making or rolling the metal
into blades or pipes, the two pieces of soft iron A', A² of requisite thickness, are
heated to a proper degree of heat and between them is placed the steel wire C, if
employed, the steel wire preferably extending cross-wise of the parts A', A' or
cross-wise of the cutting edge of the plate or blade. The wire may be in the form
of wire netting, the wires lying, cross-wise being of steel and those running the other
"

page_text: way or longitudinally of the blade of soft iron, the soft iron when only being used
to hold the steel wire in place and at proper distances apart. The crushed steel
particles may be fed into the heated metal through a hopper or otherwise, as the
metal passes through the rolls, and the whole is thus welded effectually together.
When tempered in any usual manner, the steel is hardened, leaving the iron soft.
While we have described our invention as applied to saws and pipes for stone
cutting, we do not limit ourselves solely thereto, as our invention contemplates its
use for any and all purposes other than those hereinbefore mentioned-to which it
may be found adapted...
We contemplate as coming within the scope of our invention either embedding
only the steel particles into the blade. or plate, or embedding only the steel wire
therein, or embedding both into the plate, as may be desired: It will be seen-that
the metal so made of hard cutting particles integrally united with the soft metal
may have a cutting face on one or both sides. thereof as well as a cutting edge.
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 :
1. A metal blade constructed in two soft metal parts, hardened wire located
between said parts embedded therein, said soft metal parts with the intervening wire'
formed into a single integral piece, substantially as described.
2. A metal blade formed of two metal parts having hardened fragments or
particles embedded therein, and a wire netting embedded there between, one series
of wires in said netting being hardened and running transversely across the metal
plate, substantially as described.
Dated this 22nd day of January 1895. ·
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.