Stone and other Materials.
Year: 1885

page_text: Stone and other Materials.
I, JULES DEJAIFFE, Manufacturer, of Bruxelles, Belgium (care of Messieurs
E. Bede & Co, 41, rue du Marteau) do hereby declare the nature of this invention
to be as follows:-
My invention chiefly consists in bringing the pieces to be treated, mechanically
and in an adjustable manner, in contact with an independently moving platform.
The machinery for performing this process may comprise:
1) a rotating platform, well dressed, of cast iron, sandstone, emery or any other
hard material capable of grinding other material.
2) a frame work of any convenient shape and having a continuous movement of
displacement, produced by known mechanical means, or directly by contact with
the platform.
This movement may for instance be produced by placing the frame on cranks or
crank discs, moved regularly by suitable means.
One or more holders, mounted (radially) on the said frame and adapted to the
kind of work (dressing, polishing, planing or squaring) which is to be performed.
These holders may be constructed as follows:
The first holder pivoted or swivelled on the frame, forms a vice, the stationary
side of which is perpendicular to the platform, while the other or movable side
serves to tighten or clip the piece of work; a stop, movable on a screw, regulates
the size of the pieces of work.
The said holder is so hinged on a horizontal rod, as to present to the platform at
a variable angle the pieces to be treated; this angle is varied by means of a screw
cut into (or passing through) the movable part of the bolder and pressing against
the stationary part of the same.
The second holder, likewise swivelled on the frame, is especially adapted for
squaring slabs or floor-stones. It consists essentially of a piece adapted to turn on
a pair of horizontal journals, which piece may be called a roller, as it resembles a
cylindrical roller, one side of which has been cut off up to the axle on its entire
length, except the two ends, which form two solid rings or discs, whereby is
formed a sort of trough, the two sides of which are turned down on the whole
length so that the pieces to be treated can be laid exactly against these sides in a
vertical plane, passing through the axis of the roller.

page_text: On a movable bar, connected with the two extremities of the roller, are mounted
set-screws, which press the slabs against the face of the roller. The roller is
adapted to rotate on two journals having their common axis parallel to the
platform, and to press the slabs against each other, so that the joint between the
same contains the axis of the journals. These journals are mounted on two levers,
fixed on a beam parallel to the platform. By means of set screws, attached to the
levers and passing against the stationary part of the holder, these levers are raised
or lowered, and consequently they approach to and remove from the platform the
journals and with them the whole clamping frame, thus allowing the size, intended
for the piece, to be regulated. A counterweight, acting on the pivots of the roller,
causes the slabs to rotate, while it presses the same against the platform during the
period of dressing, whereby it allows two opposite sides of a slab to be squared or
dressed parallel to each other. Guides, attached to the roller, against which guides
the slabs are placed, and which form any required angles with the platform, allow
the slabs to be shaped at pleasure.
A third kind of holder is composed of a U shaped piece, containing two pivots,
between which the pieces to be treated are clamped. One of these pivots has a
screw thread for tightening, the other one carries a plate or disc with divisions,
which presents the clamped pieces to be ground by the platform at any angles
according to the said divisions. By means of this plate these pieces are caused to
turn for presenting successively their different sides to the platform. The U shaped
piece is so hinged to the frame work, that a set screw abutting against a stationary
part is allowed to raise or lower the U shaped holder for regulating the size to
be given to the work pieces.
A fourth kind of bolders is constructed on the same principle as the third holder,
but adapted to receive a larger number of pieces. It consists likewise of an
U shaped piece, in which are fixed two pivots with disc and screw thread. The
larger or smaller distance between the axles and the platform for giving the desired
size to the pieces to be ground or polished, is obtained by means of four set screws.
A graduated or divided disc is also employed, similar to that of the third holder.
By causing this disc to turn, the work pieces are so led as to present successively
all their faces to the platform.
A fifth kind of holder consists of a framing fixed to the main frame and the
lower edges of which descend to a certain distance from the platform. The interior
of this framing is adapted to receive the pieces to be treated, clamped between end
plates or discs; these plates have exactly the shape, which is intended to be given
to the piece of work, and when the same are supported by the lower edges of the
framing, the pressure of the pieces against the platform ceases. These plates there-
fore serve for regulating the size and shape of the pieces of work. A clamping
fork, holding the plates at their axis, secures these plates by means of two pins, one
of which is fixed and attached to the fork, while the other is movable and tapped
into one of the two shanks or legs of the fork.
The movable (pin serves the purpose of pressing constantly the series of slabs
with their face against each other, whatever may be their number.

page_text: Process and Apparatus for Dressing, Polishing, and Squaring
Stone and other Materials.
I, JULES DEJAIFFE, Manufacturer, of Bruxelles, Belgium (care of Messieurs
E. Bede & Co, 41 Rue du Marteau), 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:-
My invention chiefly consists in bringing the pieces to be treated, mechanically
in an adjustable manner in contact with an independently moving platform.
The accompanying drawings in two sheets illustrate the improved machine.
Fig. 1 is an elevation of the machine partly in section, showing 2 of the holders.
Fig. 2 a plan.
Fig. 3 an elevation showing a second couple of holders.
Fig. 4 an elevation showing the fifth form of holder.
Figs. 5, 6 and 7, detail views of the holders.
Figs. 8, 9 and 11 elevation showing other forms of holders.
Fig. 10 plan views of the last.
The machinery for performing the process may comprise:
1) a rotating platform P well dressed, of cast iron, sandstone, emery, or any other
hard material, capable of grinding other material.
2) a frame C of any convenient, shape and having a continuous movement of
displacement, produced by known mechanical means, or directly by its contact with
the platform.
This movement may, for instance be produced by placing the frame C on cranks
or crank discs M (see Figs. 1 and 2) moved regularly by suitable means.
3) One or more holders S1 S2 S3, S4, and S³ mounted (radially) on the frame C
and severally adapted to the kind of work (dressing, polishing planing or squaring).
which is to be performed.
These bolders may be constructed as follows:
The first holder S' (Figs. 1, 2 and 5) pivoted or swivelled on the frame C, forms
a vice, the stationary side or jaw a of which is perpendicular to the platform, while
the other or movable side b serves to tighten or clip the piece of work; a stop c
movable vertically on a screw shaft regulates the size of the pieces of work. The
said holder S' is so hinged on a horizontal rod 1 Fig. 5, as to present to the plat-
form at a variable angle the pieces to be treated; this angle is varied by means of
a set screw d inserted in the movable part 2 of the holder and pressing against the
stationary part of the same (see Fig. 5).
The second holder S (Figs. 2, 3, 6 and 7) likewise swivelled on the frame C is
especially adapted for squaring slabs or floor-stones. It consists essentially of a
piece e adapted to turn on a pair of horizontal journals (Figs. 2 and 6) which

page_text: piece may be called a roller, as it resembles a roller, one side of which has been cut
off up to the axle on its entire length, except the two ends which form two
solid rings or discs, whereby a sort of trough is formed, the two sides of which are
turned down on the whole length, so that the pieces to be treated can be laid
exactly against these sides, in a vertical plane, passing through the axis of the
roller.
On a movable bar el connected with one of the two extremities of the roller
(Fig. 2) are mounted set-screws, which press the slabs against the face e¹ of the
roller e.
The roller is adapted to rotate on its two journals zx having their
common axis parallel to the platform. These journals are mounted on two
levers fffixed on a beam g parallel to the platform. By means of set screws d,
Fig. 6, attached to the levers and pressing against the stationary part 3 of the
holder, these levers are raised or lowered, and consequently they approach to or
remove from the platform the journals and with them the whole clamping
frame, thus allowing the size intended for the piece to be regulated. The two
supports ff being independent of each other, the axis of the roller can be adjusted
by the set-screws d, so that it lies exactly parallel to the platform. A counter
weight p acting on the pivots of the roller, causes the slabs to rotate, while it
presses the same against the platform in a direction opposed to the force of the
friction during the period of dressing, whereby it allows two opposite sides of a
slab to be squared or dressed parallel to each other. The counter-poise p is
pivoted in the socket ¹, see Figs. 2 and 7. When a slab is ground on one side,
the counter-poise p falls vertically, the slab being now in a vertical position.
Subsequently the workman lifts the counter-poise, and thus reverses the clamp
frame.
The slab having followed this movement, has described half a revolution. To
prevent the counter-poise from now pressing on the slab in the direction of the
arrow x and to cause it to press the same in the direction of the arrow x¹ (Fig. 7)
that is to say in the direction opposed to the rotation of the platform, the counter-
poise is moved on its pivot from the rear to the front. To prevent the counter-poise
from turning of itself, the socket is provided with notches (see Fig. 2) which
correspond to a projection on the counter-poise. The counter-poise being adapted
to slide so on its rod as to detach the projection from the notch at any desired
moment. Guides of the required shape are attached to the roller, against which
guides the slabs are placed, and which form any required angles with the platform
so as to allow the slabs to be shaped at pleasure.
A third kind of holder S, Figs. 1 and 2 is composed of a U shaped piece i, con-
taining two pivots J³ and K, between which the pieces to be treated, are clamped.
One of these pivots J³ has a screw thread for tightening, the other one K carries a
plate with divisions, as heretofore used, which presents the clamped pieces to be
ground by the platform at any angles according to the said divisions. By means
of the trunnion to which this plate is fixed, after removing the pin W, these pieces
can be turned for presenting successively their different sides to the platform.
The U shaped piece i is so hinged to the frame work C that a set screw abutting
against a stationary part 3 is allowed to raise or lower the holder i for regulating
the size to be given to the work pieces.
A fourth kind of holders S* Figs. 2 and 3 is constructed after the same principles
as the third holder S³, but adapted to receive a larger number of pieces. It consists
likewise of an U shaped piece n, in which are fixed two pivots o o for supporting
the frame Y; one of these pivots carries a disc and screw thread. The larger or
smaller distance between the axles and the platform for giving the desired size to
the pieces to be ground or polished is obtained by means of four set screws p.
A graduated or divided disc is also employed similar to that of the third holder S³.
By causing this disc to turn in the frame Y after removing the pin e, the work
pieces are so placed as to present successively all their faces to the platform.
t

page_text: A fifth kind of holder S, Figs. 2 and 4 consists of a framing r, fixed to the
main frame and the lower edges 1 of which descend to a certain distance from the
platform. The interior of this framing is adapted to receive the pieces to be.
treated, clamped between end plates or discs as; these plates have exactly the,
shape, which is intended to be given to the pieces of work, and when the same are,
supported by the lower edges of the framing, the pressure of the pieces against
the platform ceases. These plates therefore serve for regulating the size and shape
of the pieces of work. A clamping fork t holding the plates at their axis secures
these plates. by means of two pins, one of which is fixed and attached to the fork,
while the other is movable and tapped into one of the two shanks or legs of
the fork.
1
The movable pin serves the purpose of pressing constantly the series of slabs
with their face against each other, what ever may be their number.
The holder S (Figs. 8, 9 and 10) consists of a small truck A adapted to roll on
two rails B placed at a slight distance from the surface of the platform C.
To the two extremities of the truck and to its lower part are fixed equally and
with regulating devices at a slight distance from the platform, two steel plates D.
In the interior of the truck are placed the slabs to be ground which are fixed
between two plates E having the shape intended to be given to the slabs.
The grinding of the surfaces is limited by the two plates E.
The squaring of pavement stones may also be effected by means of a division
plate as in the holders S3 and St.
The holder S Figs. 8, 9, 10 and 11, is formed of a bracket F pivoting on an
axle F; at the extremity of this bracket is situated a shaft G; this axle carries at
its lower part a framing H, which supports a cramp frame carrying the pieces to
be ground, which may be fixed either between proportioned plates or on a division
plate.
When the platform is in movement, it takes along the framing H and also gives
it a rotary movement so as to continuously displace the pieces to be ground.
Besides this rotary movement, the axle G may be displaced radially to the
platform by eccentric cranks J fixed on the main shaft and united with the
various brackets by the rods K. In the drawings, these are particularly arranged
to indicate the manufacture of the paving slabs; L, Figs. 10 and 11 shows the
dressing of the surface; M, Figs. 9 and 10 represents the formation of a chamfered
edge and N, Figs. 8 and 10, the squaring of the slabs.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what
I claim is:
1.) The process of bringing mechanically and so as to be adjustable the pieces
of stone to be ground in contact with a platform, which moves independently.
2.) A holder 8¹ pivoted adjustably to the frame and having one stationary and
one movable jaw, between which are fixed or clamped the pieces to be ground, said
holder being adapted to be inclined at pleasure to its vertical axis.
3.) A holders having a clamping surface, to which the slabs are clamped, and
which is adapted to rotate and is combined with a counterpoise substantially as
described and illustrated.
4.) A jointed adjustable holder S³ having the shape of a horse shoe and carrying
two pivots, one with screw thread for clamping in the slabs.and the other carrying
a disc with divisions for adjusting the pieces to be ground, on to the platform at
various angles.
5.) A holder similar to that referred to in claim 4), but arranged so as to clamp
a larger number of pieces and in which the distance between the shafts and the
platform is adjusted by means of a regulating screw.

page_text: 6.) A holder consisting of a frame, in which the pieces to be ground are secured
between clamping plates, which are adjusted according to the shape intended to be
given to the pieces, these plates, when descending, abutting against the lower rims
of the frame, which, by determining the descent of the pieces, regulates the amount
of material to be ground off the pieces.