Year: 1898

page_text: We, CARL ERNST LOESCHE and BRUNO PAUL ZSCHUNKE, at Pirna, near
Dresden, Saxony, Zehista Street, No. 16, Sculpters, do hereby declare the nature
of this invention to be as follows:-
Our present invention relates to a machine for cutting stones in every curved
or irregular manner. The machine consists of a saw which by means of a pair
of plates is enabled to change its position vertically, whilst it is moving hori
zontally. The stone to be cut is placed upon a table which moves against the
saw horizontally. By this combination of the different movements of the said
parts of the machine the cutting of stones in every curved or irregular manner is
effected under assistance of templets, of a draught device and of brakes.
In the accompanying drawings
Fig. 1 shows the side elevation and
Fig. 2 the front elevation of the machine.
(A) is the frame and (A) are the central standards of the machine. Within
the central standards (A) vertically moveable plates (B) are arranged, which are
provided with a slit (G¹).
In these slits is placed the saw-frame (F) with the saw-blade. The plates (B)
serve as guides for the saw-frame (F) in its movement.
Between the two vertical standards (A') a table or trestle (C) carries the
stone (N). The plate (D) of this table is running upon guides (MM) in the
direction parallel to the standard-sides, but against the saw, which crosses it.
The table-plate (1) is provided on its sides with the brackets (0) which serve
as supports of the templets (E). The pin (H) of the guide-plates (B), inserted
with its point into the cutting-out of the templet (E) controls the downward
movement of the guide-plates, by descending the out line of the cutting-out of
the templets; it is enabled to do so by the movement of the stone-table.
In order to move automatically the stone against the saw a draught device
(LK) is arranged. Hydraulic cylinders (P) prevent the too rapid sinking of
the guide-plates (13) and of the saw-frame (F), and so the catching and over-
straining of the saw blade. S are the piston rods of the cylinders (P).
The cylinders (P) communicate together by pipes for maintaining an equal
level of the liquid of the cylinders. The pipes of communication are not shown
in the drawings.
The mouth of the pipes of discharging (R) is arranged at the necessary eleva-
tion above the bottom of the cylinders (P) and the pipes are provided with valves
controlling the flowing out of the water, and regulate so the sinking of the guide-
plates (B). Instead of the templets shown in the drawings curved plates, and
instead of the said hydraulic cylinders brakes interrupting, during a predeter-
mined time, one of the two movements necessary for the cutting of the stone,
may be used.

page_text: Instead of one saw blade more blades may be connected to the saw-frame,
one beside the other.
The working of the machine is as follows:
Having put the stone (N) upon the table-plate (D) and fastened it to the same,
the machine is thrown into gear. By the movement of the saw-frame (F) sup-
ported by the guide-plates (B), the saw blade cuts the stone. The pins (H) sliding
in the cutting out of the templets, cause the descending of the guide-plates (B)
secured to the pins.
The movement of the table-plate (D) is produced by the draught-device (L K).
Saw-blades of many shapes may be used in this machine. The saw-blades
shown in Figures 3, 4, 5, 6, 7, 8, 9 and 10 of the accompanying drawings con-
sist of a metal core, provided with cutting bodies, pieces or edges, or of a metal
core having excavations or grooves adapted to be filled out with cutting material
which may be fixed to the metal core with or without cement.
Fig. 3, 4 and 5 shows a saw blade consisting of a metal core provided with
little cutting bodies (diamond-fragments, steel-fragments and the like).
Fig. 6 shows a saw blade made of a shaped metal rod by torsion.
Fig. 7 shows a saw blade made of T shaped metal rod by torsion.
Fig. 8 shows a saw blade made of a flat metal rod by torsion.
Fig. 9 shows a saw blade made by twisting two wire-pieces.
Fig. 10 shows a saw blade like that in Fig. 8 with the modification that little
cutting bodies are inserted into the edges of the blade.
The cutting bodies are inserted into the metal core in a known manner.
When the excavations or grooves of the metal core are to be provided with a
cement like cutting-material, this material may be brought into the grooves in a
pulp-like state and is then either left to the drying influence of the air or sub-
mmitted to a ceramic treatment until it has reached the necessary degree of hard-
ness. When emery is used as cutting material, it may be mixed with Portland
cement or the like.
ALL
L
1900
We, CARL ERNST LOESCHE and BRUNO PAUL ZSCHUNKE, at Pirna, near
Dresden, Saxony, Zehista Street No. 16, Sculpters, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement:―
Our present invention relates to a machine for cutting stone and like sub-
stances in every curved or irregular manner.
Our improved machine comprises a saw which is so arranged that while it is
being reciprocated horizontally, it can change its position vertically, the stone to
be cut being placed upon a table which moves the stone or other substance
against the saw horizontally. By this combination of the different movements
of the said parts of the machine, the cutting of stone or the like in every curved
or irregular manner can be effected with the aid of templets, a draught-device
and brakes, as hereinafter described.
Our said invention also comprises improvements in the saw-blades.
In the drawings left with the Provisional Specification, Figure 1 shows the

page_text: side elevation and Figure 2 the front elevation of the machine The remaining
figures of the drawings are hereinafter referred io.
A is the frame of the machine and A', A' are vertical standards forming guide-
ways for vertically movable guide-blocks B, each of which is provided with a
slot G. In these slots works the saw-frame with the saw-blade, the said
slots serving as guides for the saw-frame Fin its reciprocating movement.
Between the two vertical standards A a table 1) for carrying the stone N is
movable horizontally upon guides M, M', on supports C in a direction per-
pendicular to the plane in which the saw-blade moves. The table D is provided
on its sides with brackets O which serve as supports for the templets E. The
pins H projecting from, the guide-blocks B respectively travel in the grooves of
the templets E, which move with the table 1 and control the downward move-
ment of the said guide-blocks as required.
A traction device, such, for example, as a weight K, attached to a cord or
chain L which is passed over a pulley and attached to the table D, is provided
to automatically move the stone against the saw in a horizontal direction.
Hydraulic cylinders P, the piston-rods S of which are connected with the guide-
blocks, are employed to prevent the too rapid descent of the said guide-blocks B
and the saw-frame F and the consequent catching of the saw-blade in the work
and thus obviate the liability to overstraining of the saw-blade. The cylinders P
are in communication through pipes not shown in the drawings so that an equal
level of the liquid in the two cylinders will be maintained. The mouths of the
discharge-pipes are arranged at a convenient elevation above the bottom of the
cylinders P and the said discharge-pipes R are provided with valves for con-
trolling the discharge of the water, in order to thus regulate the descent of the
guide-blocks B.
The operation of the machine is as follows:-
The stone or like material N is fastened upon the table 1), and the machine is
thrown into gear. By the movement of the saw-frame F in the guide-blocks B,
the saw-blade is moved to and fro to cut the stone. The pins H sliding in the
grooves of the templets, the latter, in the movement of the table under the action
of the draught-device K, L, control the descent of the guide-blocks B and saw-
frame F.
Instead of the templets shown in the drawings, we sometimes employ curved
plates along the profile of which the pins H travel; and we may substitute for
the aforesaid hydraulic cylinders, friction-brakes for retarding the downward
movement of the vertically-movable guide-blocks.
One or more saw-blades may, if desired, be mounted in the same saw-frame,
one beside the other.
Saw-blades of various shapes can be used in this machine. The saw-blades
shown in Figures 3, 4, 5, 6, 7, 8, 9 and 10 of the drawings consist of a metal core,
provided with cutting bodies, pieces or edges, or of a metal core having excava-
tions or grooves adapted to be filled out with cutting material which may be
fixed to the metal core with or without cement.
Figures 3, 4 and 5 show different saw-blades each consisting of a metal core
provided with small cutting bodies (diamond-fragments, steel-fragments and the
like).
Figure 6 shows a saw-blade made by torsion from a metal rod of cross-shape in
transverse section.
Figure 7 shows a saw-blade made by torsion from a T-shaped metal rod.
Figure 8 shows a saw-blade made by torsion from a flat metal rod.
Figure 9 shows a saw-blade made by twisting together two pieces of wire.
We can also make our saw-blades by torsion from metal rods of other suitable
shape in transverse section.
Figure 10 shows a saw-blade like that shown in Figure 8, with the modifica-
tion that small cutting bodies are inserted into the edges of the blade.
The cutting bodies are inserted into the metal core in any known manner.

page_text: When the excavations or grooves of the metal are to be provided with a cement-
like cutting-material, this material may be introduced into the grooves in a pulp-
like state and then either exposed to the drying influence of the air or sub-
mitted to à ceramic treatment or baking until it has reached the necessary degree
of hardness. When emery, carborundum or the like is used as a cutting
material, it may be mixed with Portland cement or the like.
Having now particularly described and ascertained the nature of our said in-
vention, and in what manner the same is to be performed, we declare that what we
claim is
1. In a sawing-machine, the combination of a saw, a table for supporting the
stone or other substance to be sawn, a templet fixed to the said table, sliding
blocks bearing the saw and adapted to move downwards uniformly and as con-
trolled by the said templet, and means for moving the said table transversely
against the saw, substantially as set forth.
2. In a sawing-machine, the combination of a saw, a table for supporting the
stone or other substance to be sawn, means for moving the said table transversely
to the saw, sliding blocks bearing the saw and adapted to move downwards as
the table is moved forward, and means for regulating or controlling the down-
ward movement of the said sliding blocks, substantially as, and for the purposes,
set forth.
3. In a sawing-machine, the combination of a saw, a table for supporting the
stone or other substance to be sawn, templets fixed to the said table, sliding
blocks bearing the saw and adapted to move downwards uniformly, pins fixed to
the said sliding blocks and capable of bearing against the contour of the said
templets, and means for moving the said table transversely to the saw, substan-
tially as, and for the purposes, set forth.
4. In a sawing-machine, the combination of a saw, a table for supporting the
stone or other substance to be sawn, a templet fixed to the said table, a sliding
block bearing the saw and adapted to move downwards in accordance with the
contour of the templet, a retarding device or brake connected with the said sliding
block and adapted to retard the downward movement of the same, and means for
moving the said table transversely to the saw, substantially as, and for the pur-
poses, set forth.
5. In a sawing-machine, the combination of a saw. a table for supporting the
stone or other substance to be sawn, templets fixed to the said table, a weight
adapted to move the said table transversely to the saw, sliding blocks bearing the
saw and adapted to move downwards, pins fixed to the said sliding blocks and
capable of bearing against the contour of the said templets, and retarding
devices or brakes connected with the said sliding blocks and adapted to retard
the downward movement of the same, substantially as, and for the purposes,
set forth.
6. The improved sawing-machine constructed substantially as described with
reference to the drawings and operating as, and for the purposes, above specified.
7. A saw-blade consisting of a metal core provided with small cutting bodies
(diamond-fragments, steel-fragments or the like), as set forth.
8. A saw-blade made by torsion from a metal rod of cross-shape, T-shape, flat
or other suitable shape in transverse section, substantially as set forth.
9. A saw-blade made by twisting together two pieces of wire, substantially
as set forth.
10. A saw-blade made by torsion from a metal rod of suitable shape in trans-
verse section and having small cutting bodies inserted into its edges, substantially
as set forth.
11. A saw-blade provided with prominences of a hardened cutting material
(emery, carborundum or the like) inserted into grooves in the saw-blade in a fresh
and wet condition, mixed with cement, substantially as set forth.
12. A saw-blade provided with small cutting bodies embedded in a cement-

page_text: like material, the latter being inserted into grooves in the saw-blade in a wet
condition and hardened by the influence of the air or by baking, substantially
as set forth.
10
1000
FELIX F. LOEPER,
Agent for Applicants.