Improvements in or relating to the Setting or Fixing of Diamonds. and the like in Holders.
Year: 1899

page_text: Date of Application, 21st June, 1899
Complete Specification Left, 16th Feb., 1900-Accepted, 31st Mar., 1900
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Setting or Fixing of Diamonds.
and the like in Holders.
I, GEORGE ANDERSON, of the Firm of George Anderson and Company, Taymouth
Engineering Works, Carnoustie, in the County of Forfar, Scotland, Engineers and
Founders, do hereby declare the nature of this invention to be as follows:-
-
This invention relates to improvements in the setting or fixing of diamonds
and the like in holders, the object being to securely fix these in metal holders, the
combined diamonds and holders being applicable for saws used in the cutting. of
stones, for turning emery wheels and the like, or for holding diamonds for any
other purpose where it is desirable that they be securely fixed.
Such
In carrying out my invention I make the holder of metal, such as for example
iron or steel, and bore a hole into it from the back or a side and at any desired
angle, such hole not coming quite through the face and of sufficient
diameter to allow of the diamond being received within it.
holder, with its diamond in position at the bottom of the hole, is placed between
the terminals or conducting jaws of an electrical appliance or furnace, such ter-
minals being so arranged that they can apply pressure to the holder in a similar
manner to that which obtains in a vice. On sending a current of electricity
through the appliance the holder is heated and softened to such a degree that
the hole in it can be squeezed together, the result being that the diamond is solidly
set within such holder and that without injury to itself.
Sometimes, before subjecting the holder to the process of heating and squeez-
ing, I may introduce a short plug of metal into the hole, such plug being imme
diately behind the diamond and in diameter nearly equal to that of the hole,
the intention being to weld or otherwise closely incorporate the plug with the
holder and thus make more certain that the diamond is surrounded and backed
by solid metal.
The diamond holders may be of any desired shape and they may be applied
to or in connection with any suitable industrial process.
Dated this 20th day of June 1900
་
Improvements in or relating to the Setting or Fixing of Diamonds
and the like in Holders.
I, GEORGE ANDERSON, of the Firm of George Anderson and Company, Taymouth
Engineering Works, Carnoustie, in the County of Forfar, Scotland, Engineers-and
[Price 8d.]

page_text: Founders, 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 improvements in the setting or fixing of diamonds
and the like in holders, the object being to securely fix these in metal holders, the
combined diamonds and holders being applicable for saws used in the cutting of
stones, for turning emery wheels and the like, or for holding diamonds for any
other purpose where it is desirable that they be securely fixed.
And in order that my said invention and the manner of performing or carrying
the same into effect or practice may be properly understood, I have hereunto
appended an explanatory sheet of drawings in which the same reference numerals
are used in indicate corresponding parts in all the figures where shown, that
is to say
Figure 1, is a sectional elevation showing the diamond holder in position ready
for being treatoul by the electrical welding and squeezing machine, and Figure 2,
is a cross-section at A, A, (Figure 1) looking in the direction of the arrow Z.
In carrying out my invention 1 make the holder 10, of metal, such as for
example iron or steel, and bore a hole 11, into it from the back or a side and
at any desired angle, such hole not coming quite through the face 12, and of
sufficient diameter to allow of the diamond 13, being received within it. Such
holder, with its diamond in position at the bottom of the hole, is placed between
the electrodes or conducting jaws 14, and 15, of an electrical appliance or fur-
nace, such electrodes being so arranged that they can apply pressure to the
holder in a similar manner to that which obtains in a vice, whereby the diamond
holder 10, is held between the electrodes 14, and 15, by pressure and friction.
The one electrode 14, is carried by a fixed head 16, while the other 15, is carried
by a sliding head 17, such head being actuated by a screw 18, nut 19, and hand
wheel 20. The copper electrodes 14, and 15, are insulated by means of suitable
non-conducting material 21, and the electric generator is placed in circuit by
means of the conductors 22, in the usual way. On sending a current of electri-
city through the appliance at the time the holder is held between the electrodes,
such holder is heated and softened to such a degree that the hole 11, in it can
be squeezed together, the result being that the diamond is solidly set within such
holder and that without injury to itself.
:
Sometimes before subjecting the holder to the process of heating and squeez-
ing I may introduce a short plug 23, into the hole, it being preferably of metal
similar to that of the holder, the intention being to weld or otherwise suitably
incorporate the plug with the holder and thus make more certain that the
diamond is surrounded and backed by solid metal. The holders so treated can
then be removed from the appliance and allowed to cool and afterwards can-be
dressed and fixed into anything suitable such as for example circular saws or the
like. In the final step the projecting metal of the holder is ground away by the
stone being first operated on until the diamond is sufficiently exposed to act on
such stone.
The diamond holders may be of any desired shape and they may be applied to,
or in connection with any suitable industrial process.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
(1) The process herein described for setting or fixing diamonds in metal holders
which consists in placing a diamond in a previously prepared hole or cavity in
a metal holder and then heating and squeezing such holder, by means of an elec-
tric appliance or furnace.
(2) The process of setting or fixing diamonds in metal holders, which consists
in placing the diamond in a previously prepared hole or cavity in a metal holder,

page_text: behind such diamond placing a metal plug, afterwards heating such holder by
means of an electric current and finally squeezing it together, substantially as
described.
(3) In an appliance used for the setting or fixing of diamonds in metal holders,
the combination of a fixed and a moveable electrode whose purpose is to hold, heat,
soften and squeeze together the holder within which the diamond is placed, sub-
stantially as described.
(4) In the appliance used for the setting or fixing of diamonds into holders, the
combination of a fixed and a moveable electrode with a suitably prepared metal
holder, substantially as described and for the purposes set forth.
(5) The combination, in an appliance used for the setting or fixing of diamonds
into metal holders, of two electrodes for holding, heating and squeezing the holder,
the fixed and moveable heads for carrying the electrodes, the non-conducting
material surrounding the electrodes, the conductors for attaching the conducting
wires to the electrodes, the screw, nut and hand wheel for adjusting the position
of the moveable head, all substantially as set forth.
Dated this 8th day of January 1900.
GEO. C. DOUGLAS & Co.,
Chartered Patent Agents, 41, Reform Street, Dundey,
Agents for Applicant.