Year: 1888

page_text: the nature of this Invention to be as follows:-
My invention relates to improved endless saws intended for cutting stone of all kinds,
and combined so as to avoid the different inconveniences inherent to the already used
stone cutting endless saws formed of helicoidal steel wires running over two or more
driving pulleys.
My system of endless saws consists of a steel or iron wire provided with grooves of
various form running parallel to the axis of the wire.
I form an endless ring of such a wire, and I have the same running upon two or
more grooved pulleys which are driven by means of any suitable machine having the
necessary arrangements for causing the wire to rotate about its own axis, and for
injecting into the grooves of the wire the necessary water and sand on those places
where it is employed to cut the stone.
According to one arrangement, the wire is provided with grooves running parallel to
its axis. These grooves may vary in respect of their form as well as in respect of
their number.
In some cases I form the endless saw of a cylindrical wire upon which I thread a
series of pieces of grooved wire formed as above described, and provided with an axial
hole corresponding to the cylindrical wire.
The endless saws of the described construction may have their elements affixed at
equal distances from one another upon the wire; or the elements may be placed end
to end upon the said wire.
ERNEST DE PASS, Fel. Inst. P.A.,
68, Fleet Street, London,
Agent for the Applicant.

page_text: I, FRANÇOIS TURRETTINI, of Geneva, in Switzerland, Gentleman, 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, and accom-
panying drawing (that is to say) :-
--
My present invention relates to endless saws used for sawing stone, and it has for
its object a novel method of making such endless saws, so that they are free from the
inconveniences which have heretofore been experienced in using such saws when made
in the ordinary way of metal wires helically coiled, more particularly the rapid wear
of such saws.
My invention consists in the use, for sawing stone of all kinds, of a wire of iron,
steel, or other suitable metal grooved longitudinally with grooves of different
shapes.
I tako an endless wire of the improved kind described, and I pass it round grooved
pullies driven by machinery of any convenient kind, the grooved wire operating as an
endless saw for its entire length.
In the accompanying drawing, which is in illustration of my invention, figures 1,
2, and 3, shew different forms and arrangements of the grooved wire.
"
Figure 4 illustrates some of the different sections which the wire may have,
which sections may however be varied infinitely, those shewn being illustrations
only.
In figure 1 the grooved wire A is supposed to be solid in section, and to be used
directly in the manner above described.
In figure 2 the saw, properly so called, is formed of a series of short pieces A of the
grooved wire cut to a uniform length and pierced longitudinally with a central holo
by which they can be strung upon a metal wire round or square or of other suitable
section B, leaving the latter exposed for a certain length between each piece of the
grooved wire.
Figure 3 shows a saw formed in the same manner as that shewn in figure 2, but
without the free spaces between the ends of the grooved pieces.
Having now particularly described and ascertained the nature of my said Inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The saw for sawing stone, consisting of an endless wire having longitudinal
grooves formed upon its surface substantially as described and shown.
2. The combination of the short pieces of grooved wire, pierced longitudinally
and fitted upon an endless wire of any suitable section, with or without spaces
between the pieces substantially as described and shewn.
Dated this 20th day of December 1888.