IMPROVEMENTS IN THE SETTING OF BLACK DIAMONDS AND OTHER HARD SUB- STANCES
Year: 1878

page_text: LETTERS PATENT to Henry Conradi, of 8, Lower James Street, Golden Square,
in the County of Middlesex, Engineer and Patent Agent, for the Invention of
"IMPROVEMENTS IN THE SETTING OF BLACK DIAMONDS AND OTHER HARD SUB-
STANCES." A communication from abroad by Ludovic Taverdon, of Paris, 15,
Rue des Halles, France.
Sealed the 24th December 1878, and dated the 6th August 1878.
PROVISIONAL SPECIFICATION left by the said Henry Conradi at the Office
of the Commissioners of Patents on the 6th August 1878.
HENRY CONRADI, of 8, Lower James Street, Golden Square, in the County of
Middlesex, Engineer and Patent Agent. "IMPROVEMENTS IN THE SETTING OF BLACK
DIAMONDS AND OTHER HARD SUBSTANCES." [A communication from abroad' by
Ludovic Taverdon, of Paris, 15, Rue des Halles, France.]
10th
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These improvements relates to the methods of setting hard substances, and
especially black diamonds, also called carbons, and generally used to cut or to drill
the rocks, the minerals and metals, or other substances.
101137
31.15.
The setting has been effected till now by means of engraving, cutting, or carving,
or by means of stone setting, but the diamond became very soon dismounted. The
method hereafter described differs from the former, as the diamond is either totally
or partially wrapped up beforehand by covering it with one or sever
"pieces of
or several p
metal, called cramps or claws, which keeps the stone secure, and are soldered
together. The outside of this cover is provided with threads slightly tapered, and
is strongly and, directly pressed in a casing.
1.
17,1
1. 118.,
Aut
If the diamond is enveloped by two plates of a fusible metal, copper for example,
it is pressed in by mouldering it in through the melting, or by incrusting it through
pressure after the soldering of the pieces has taken place.
Another method of encasing the diamond is by means of galvano-plastic
By this
depositing on it a metallic layer, varying according to circumstances. F
method a kind of metallic core is obtained of an oval shape, and by swelling it at

page_text: its base it can be screwed on, soldered, or brazed to the casing; after that the inner
part or point of the diamond or other hard substance which may be encased becomes
disengaged, and prepared for its cutting purpose.
The process of incrusting the diamonds or other hard substances can in certain
special cases be carried out differently. If, for example, it was required to form a
thin saw blade for cutting malachite, or for any other similar purpose, then two thin
contiguous blades powdered with borax are joined together by passing them between
two red-hot cylinders; they are hereby soldered together, and likewise the diamond,
or silex, or any other similar dust is poured in by means of a hopper, and finds itself
imprisoned and soldered to it.
The same result can be obtained by the use of a saw blade of the vi (V) shape.
The dust is again poured in along the groove, mixed either to the borax or copper.
filings, and the blade thus prepared passes between two red-hot cylinders, whereby
a soldering through melting is effected; therefore the black diamond stone or its dust
is firmly fixed by means of incrustation and setting; the cells or sockets of the stones
are formed, and the material poured in. It can also be fixed by means of laminating
and mixing the agglomerating and fusible substances.
The setting can also be effected by means of the galvano-plastic as well as by
means of an amalgam of mercury, as before stated.
By these methods the formation of artificial black diamonds of any shape and
size can also be effected by the use of metallic salts, serving to agglomerate the sepa-
their
rated particles of the pulverised carbones; these particles are very hard;
extreme smaliness is the only inconvenience; but nevertheless small stones or cores
are formed of it, and also line or surface pickers. This dust, so remarkably effective
in spite of being closed up, being incorporated in a metallic agglomeration, can be
formed into either seperate cores or as grinding or other stones of picking surfaces,
being able to cut the hardest steel even if case hardened. The setting of the
different separated cores is effected in the same manner as by the diamonds.
The drills, stones, rimers, and other tools formed by diamonds, which are set as
before described, can be used everywhere where it is required to cut, to bite, to rimė,
to drill, and so on; in mines, for cutting peat or other substances; in the workshop
and manufactories, for the manufacture of rimers, for dressing metals, for the turning
or boring of cylinders, millstones, and other purposes; in the tunnels and quarries,
for the perforation of rocks and similar purposes.
-
The tools can be made of any shape, and be used in any way.
This method of setting, as herein described, can be used for any kind of hard sub-
stance, as hardened or compressed glass, silex, compound metals, steel, or bronze
steel; these pieces take the form of teeth, splinters, or roots covered by a metallic
jacket, which is formed as a layer by means of amalgamation, galvano-plastic, or by
any other chemical process of dissolution or transportation.
Having thus described the nature of the Invention, and the manner of performing
the same, it will be understood that 'the improvements upon which the claims are
principally based consists,-
'
1. In the setting of diamonds set in separately after having been jacketed,
covered, or enveloped by means of melting, the jacket or cover being composed
either of one or several pieces 'soldered together, forming a solid metallic core.pro-
vided with threads allowing it to be fixed directly in a socket.
2. In the setting of dust by means of direct soldering or brazing, effected by lami-
nating or by pressure at a high temperature.
3. In the setting of diamonds of any size by covering them beforehand with a
metallic layer of sufficient size and of appropriate form by means of the galvano-
plastic or of amalgamation.
4. In the use of metallic salts, 'agglomerating the dust of the black diamond to
the effect of forming surfaces of a very sharp cutting by means of agglomeration and
incorporation in any convenient substance.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Henry Conradi in the Great Seal Patent Office on the 1st February
1879.
HENRY CONRADI, of 8, Lower James Street, Golden Square, in the County of
Middlesex, Engineer and Patent Agent. "IMPROVEMENTS IN THE SETTING OF BLACK
DIAMONDS AND OTHER HARD SUBSTANCES." A communication from abroad by
Ludovic Taverdon, of Paris, 15, Rue des Halles, France.
These improvements relates to the methods of setting hard substances, and
especially black diamonds, also called carbons, and generally used to cut or to drill
the rocks, the minerals and metals, or other substances.
The setting has been effected till now by means of engraving, cutting, or carving,
by soldering, or by means of stone setting, but the diamond became very soon dis-
mounted. The method hereafter described differs from the former, as the diamond is
either totally or partially wrapped up beforehand by covering it with one or several
pieces of metal, which keeps the stone secured, and are soldered together. The out-
side of this cover is provided with threads slightly tapered, and strongly and directly
pressed in à casing.
1
If the diamond is enveloped by two plates of a fusible metal, copper for example,
it is pressed in by moulding it in through the melting, or by incrusting it through
pressure after the soldering of the pieces has taken place, the diamond being closed
up like the kernel of a hazel nut.
Another method of encasing the diamond is by means of galvano-plastic depositing
on it a metallic layer, varying according to circumstances. By this method a kind.
of metallic layer is obtained of an oval shape, and by swelling it at its base it can
be screwed on, soldered, or brazed to the casing; after that the inner part or point
of the diamond or other hard substance which may be encased becomes disengaged,
and prepared for its cutting purpose.
The process of incrusting the diamonds can in certain special cases be carried out
differently. If, for example, it was required to form a thin saw blade for cutting
malachite, or for any other similar purpose, then two thin contiguous blades pow-
dered with borax are joined together by passing them between two red-hot
cylinders; they are hereby soldered together, and likewise the diamond, or silex, or
any other similar dust is poured in by means of a hopper, and finds itself imprisoned
and soldered to it.
The same result is obtained by the use of a saw blade of the vi (V) shape. The
dust is again poured in along the groove, mixed either to the borax or copper filings,
and the blade thus prepared passes between two red-hot cylinders, whereby a
soldering through melting is effected, enveloping the diamond dust. To facilitate
the fixing of the stones an amalgamation of mercury is also used; therefore the
black diamond stone or its dust is firmly fixed by means of incrustation and
setting; the cells or sockets of the stones are formed, and the material poured in.
It can also be fixed by means of laminating and mixing the agglomerating and
fusible substances.
The setting can also especially be effected by means of the galvano-plastic, as well
as by means of an amalgam of mercury, as before stated, which through its evapo-
rating leaves the hard body imprisoned in the metal dissolved beforehand.
By these methods the formation of artificial black diamonds of any shape and
size can also be effected by the use of metallic salts, serving to agglomerate the
separated particles of the pulverised carbones; these particles are very hard; their
extreme smallness is the only inconvenience; but nevertheless small stones or cores
are formed of it, and also line or surface pickers. This dust, so remarkably effective
in spite of being closed up, being incorporated in a metallic agglomeration, can be
formed either into separate cores or as grinding or other stones of picking surfaces,

page_text: being able to cut the hardest steel, even if case hardened. The setting of the
different separated cores is effected in the same manner as by the diamonds.
The drills, stones, rimers, and other tools formed by diamonds, which are set as
before described, can be used everywhere where it is required to cut, to bite, to rime,
to drill, and so on; in mines, for cutting peat or other substances; in the workshops
and manufactories, for the manufacture of rimers, for dressing metals, for the turning
or boring of cylinders, millstones, and other purposes; in the tunnels and quarries,
for the perforation of rocks and similar purposes.
The tools can be made of any shape, and be used in any way.
This method of setting, as herein described, can be used for any kind of hard
substance, as hardened or compressed glass, silex, compound metals, steel, or bronze
steel; these pieces take the form of teeth, splinters, or roots covered by a metallic
jacket, which is formed as a layer by means of amalgamation, galvano-plastic, or by
any other chemical process of dissolution or transportation.
Having thus herein substantially described the nature of the Invention, and the
manner of performing the same, it will be understood that the improvements upon
which the claims are principally based consist,-
1. In the setting of diamonds set in separately after having been jacketed,
covered, or enveloped, by means of melting, the jacket or cover being composed
either of one or several pieces soldered together, forming a solid metallic core pro-
vided with threads allowing it to be fixed directly in a socket.
2. In the setting of dust by means of direct soldering or brazing, effected by lami-
nating or by pressure at a high temperature.
3. In the setting of diamonds of any size by covering them beforehand with a
metallic layer of sufficient size and thickness, and of appropriate form, by means of
the galvano-plastic.
4. In the use of metallic salts, agglomerating the dust of the black diamond to
the effect of forming surfaces of a very sharp cutting by means of agglomeration and
incorporation in any convenient substance.
5. In the use of an amalgam of mercury in order to envelop the clots or dust of
the diamonds or other hard substances.
In witness whereof, I, the said Henry Conradi, have hereunto set my hand
and seal, this Fourth day of February, in the year of our Lord One
thousand eight hundred and seventy-nine.