Polishing Stone, Marble, or other Material.
Year: 1886

page_text: Date of Application, 4th June, 1886.
Complete Left, 3rd Mar., 1887.
Complete Accepted, 19th Apr., 1887.
Polishing Stone, Marble, or other Material.
I, EMILE SALENDRE of 1 Boulevard St. Denis, Paris, France, Contractor for
Pullic Works do hereby declare the nature of this invention to be as follows:-
This invention relates to sawing or cutting stone, marble or other material and
consists of improved apparatus in which continuous saws or cutters are kept up to
their work or in which the material is kept up to the saws or cutters by means of
gravity or of weights. The saws or cutters employed may bo steel bands or stcel
wires travelling over rotating pulleys, or they may be chain saws or jointed saws.
According to one form of the apparatus the endless saw or cutter passes round three
pulleys, one of these being at an elevation and the other two below the level of the
block of stone or material to be cut. The block is placed on a carriage or on a pair of
carriages coupled together, and the carriage or carriages are placed on an inclined
way or platform, the inclination of which can be adjusted according to the nature of
the material to be cut. As the saw cuts into the block the carriage and block move
One of
down the incline by gravity so that the block is always kept up to the saw.
the lower pulleys is adjustable so as to regulate the tension of the saw; the other is
situated on a lar fixed above a trough containing sand or equivalent material for
assisting in the attrition of the block; a dredger or set of buckets lift the sand from
the trough to a sand box above from which it runs through a pipe or channel to the
saw. The
upper pulley is mounted on uprights which also support the sand box. In
the sand trough is a grating supporting a sheet of wire gauze on which the sand will
remain dry, as all water will pass through the gauze; this arrangement is necessary to
prevent the sand adhering to the buckets. When two carriages are used to support
the block they can be disconnected at will. By the use of two carriages a free space
is left for the passage of the saw; hut they can be connected by a cross bar let into
mortises and capable of being shifted as the work progresses.
In another form of the apparatus the block that is being cut kept up to the saw
by means of a weight on one end of a chain or rope that passes over pulleys and is
attached at its other end to the carriage that supports the block; to prevent back

page_text: movements resulting from differences of hardness in the stone that is being cut, there
is a ratchet wheel with small teeth into which a stop paul takes.
In another form, the lower pulleys, over which the continuous saw or cutter passes,
are carried on pivoted bars or arms which as the cutting proceeds are pulled down-
warils by means of a weight so that the saw gradually descends. The saw passes
mler a movable upper pulley which is weighted with a less woight than the weight
ahve mentioned and rises as the lower pulleys are pulled downwards and thus
compensates for the extra longth of saw required to go round the lower pulleys.
In another form which provides for cutting two blocks at once there are three
pulley supports viz: ono at each end and the other at the middle; the two end
supports are hinged and the midillo one is fixed; the object of hinging the end
supports is to ensure the tension of the suw; for this purpose they may have fitted to
them a lever with a sliding weight or they may have attached to them an arm to which
an adjusting threaded bar with nut is connected; this bar may be fitted with a spring
to diminish shocks caused by inequalities in the hardness of the material that is being
cut. In this form of the apparatus the blocks as they are cut rise to the cutter; this
is effected by means of weighted levers acting on the seats or supports of the blocks.
The weights are adjustable so that the pressure exerted can be regulated, and the
leverage of the levers can also he male adjustable if desired.
My improved apparatus can be employed more especially for cutting hard stones
and gems which can be successively cut, finished and polished by simply changing the
tools.
The apparatus can be kept up to its work by water under pressure, or the block can
bo kept up to its work by water pressure made to act upon tlie support that carries the
block.
J. C. MEWBURN,
169, Fleet Street, London,
Agent.

page_text: Polishing Stone, Marble, or other Material.
I EMILE SALENDRE, of 1 Boulevard St. Denis, Paris, France, Contractor for
Public Works 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 sawing or cutting stone, marble or other material and
consists of improved apparatus in which continuous saws or cutters are kept up to
their work or in which the material is kept up to the saws or cutters by means of
gravity or of weights. The saws or cutters employed umy to steel bands or steel wires
travelling over rotating pulleys or they may be chain saws or jointed saws.
According to one form of the apparatus, which is represented in Figure 1. of the
annexed drawings, the endless saw or cutter a passes round three pulleys b, c, d one of
those being at an elevation and the other two below the level of the block of stone or
material to be cut. The block fis placed on a carriage y or, as seen in Figure 2, on a
pair of carriages coaplol together and the carriage or carriages are placed on an
inclined way or platforin h the inclination of which can be adjusted by means of the
screw i according to the nature of the material to be cut. As the saw cuts into the
block the carriage and block move down the incline by gravity so that the block is
always kept up to the saw. The pulley c is adjustable so as to regulate the tension of
the saw the pulley d is situated on a bar fixed above a trough containing sand or
equivalent material for assisting in the attrition of the block; a dredger or set of
buckotsk lifts the sand from the trough to a sand box above from which it runs
through a pipe or channel to the saw. The upper pulley b is mounted on uprights
which also support the sand box. In the sand trough is a grating supporting a sheet
of wire gauze on which the sand will remain dry, as all water will pass through the
gauze; this arrangement is necessary to prevent the sand adhering to the buckets.
When two carriages 9, 2 are used to support the block, as seen in Figure 2, they can
he disconnectod at will. By the use of two carriages a free space is loft for the
passage of the saw; but they can be connected by a cross har let into mortises and
capable of boing shifted as the work progresses.
In another form of the apparatus, which is represented in Figure 3, the block that
is being cut is kept up to the saw a by means of a weight on one end of a chain or
rope that passes over pulleys and is attached at its other end to the carriage g that
supports the block; to prevent back movements resulting from differences of hardness
in the stone that is being cut, a ratchet wheel (not shown) with small teeth is provided
into which a stop paul takes.
In another form of the apparatus, represented in Figure 4, the lower pulleys over
which the continuous saw or cutter a passes are carried on pivoted bars or armis m, mu
which as the cutting proceeds are pulled downwards by means of a weight n so that
the saw gradually descends. The saw a passes under a movable upper pulley which is

page_text: weighted at o with a less weight than the weight n and rises as the lower pulloys are
pulled downwards and thus compensates for the extra length of saw required to go
round the lower pulleys. p is the sand trough and g the sand box.
In another form of the apparatus, represented in Figure 5, and which provides for
cutting two blocks f,fat once there are three pulley supports A A A viz: one at each
end and the other at the middle; the two end supports are hinged and the middle one
is fixed, the object of hinging the end supports is to ensure the tension of the saw a;
for this purpose they may have fitted to them a lever with a sliding weights, as shown
at the right of the figure, or they may have attached to them, as seen at the left of the
figure, an arm to which an adjusting threaded bar t with nut is connected; this bar
may be fitted with a spring to diminish shocks caused by inequalities in the hardness
of the material that is being cut. In this form of the apparatus the blocks f,fas they
are cut rise to the cutter; this is effected by means of weighted lovers u, u acting on
the seats or supports of the blocks. The weights are adjustable so that the
pressure exerted can be regulated, and the leverage of the levers can also be made
adjustable if desired.
My improved apparatus can be employed more especially for cutting hard stones
and gems which can be successively cut, finished and polished by simply changing the
tools.
The apparatus can be kept up to its work by water under pressure or the block can
be kept up to its work by water pressure made to act upon the support that carries the
block.
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, in
respect of apparatus for sawing, cutting, dressing or polishing stone, marble, or other
material, is :
1. Constructing apparatus in such manner that the material under operation is kept
up to a continuous saw or cutter, or a continuous saw or cutter is kept up to the
material under operation, by means of gravity or of weights substantially as set forth.
2. The several arrangements of apparatus hereinbefore described.
Doted this 3rd day of March 1887
J. C. MEWBURN,
169, Fleet Street, London.
Agent.