Improvements in Stone Sawing and Moulding Machines
Year: 1899

page_text: Date of Application, 9th Mar., 1899--Accepted, 6th May, 1899
COMPLETE SPECIFICATION.
Improvements in Stone Sawing and Moulding Machines,
1. JOHN MCLACHLAN, of Denver, in the County of Arapahoe and State of Colorado,
United States of America, Stone-cutter, do hereby declare the nature of this inven
tion, and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement:-
My invention relates to improvements in stone-cutting machines, and comprises
a combination of stone sawing and stone molding mechanism, whereby the stone
may he sawed, and a molding either straight or circular simultaneously formed
thereon. The molding devices are preferably located above the saws whereby the
necessary abrading material may drop from the molding cutters into the kerfs or
grooves formed by the saws. The invention also includes mechanism for the in-
dependent vertical adjustment of the frames upon which the saws and molding
cutters are respectively mounted.
To these ends, the invention consists of the features, arrangements and com-
binations hereinafter described and claimed, all of which will be fully understood
by reference to the accompanying drawing in which is illustrated an embodiment
thereof.
In this drawing
Fig. is a side clevation of my improved machine.
Fig. 2 is a section taken on the line - Fig. 3.
Fig. 3 is a vertical, longitudinal section taken on the line r―, Fig. 4.
Fig. 4 is an end elevation of the machine.
Fig. is a fragmentary perspective view of the movable frames upon which
the saws and moll cutters are mounted.
Fig. 6 is a fragmentary perspective view of the guides engaging the cross-heads
of both the straight and circular mold cutters.
Fig. is a perspective view of the mold cutter and the supporting bar to which
it is attached.
Fig. 8 is a front view of the mold cutter.
Figs. 9, 10 and 11 are detail views.
Similar reference characters indicating corresponding parts in these views, let
the numeral 5 designate the stationary frame composed of the side base beams 5.
the end base beams 5, the vertical posts 5, the top end beam's 5, and the top side
beams 5. The saws 6 are mounted on hangers 7 attached to a horizontal cross-
head S mounted on longitudinal guides 12 having projections 12" engaging vertical
grooves formed in the posts 54. The guides are vertically adjustable by means of
nuts 9 mounted on vertical screws 10 journaled in the stationary frame. To the
nuts 9 are attached depending bars 13 whose lower extremities are secured to the
guides 12. To the upper extremities of the screws 10 are made fast bevel gears 14
engaging other similar gears 15 fast on a horizontal shaft 16. The saws are operated
by means of a pilman 17 attached to one of the cross-heads S and connected with
any suitable motor, whereby a reciprocating movement may be imparted to the
gang of saws. The saws 6 are provided with circular recesses 6 formed in their
upper and lower edges and with vertical grooves 6º in allow the abrading material
Hi RIT

page_text: falling into the grooves from above, to pass downward where the lower edges of
the saw blades can act thereon in the performance of their function.
The two cross-heads 8-are rigidly connected by longitudinal bars 18. To the
inner edges of the cross-heads 8 of the saw frame, are attached four upright verti-
cally slotted guides 19, one being located at each corner of the machine. To these
guides 19 are movably attached two upper cross-heads 20 by means of keys 21
which pass through the slots of the guides. To the inner extremities of these
keys are attached stop blocks 22 which hold the keys in place. During the opera-
tion of the machine, the cross-heads 20 have a free vertical movement on the
guides 19. These cross-heads 20 are mounted on longitudinal guides 23 secured
to nuts 24, through which pass vertical adjusting feed screws 25 journaled in the
frame. The guides 23 are provided with projections 23" which engage vertical
grooves formed in the posts 5ª of the frame. To the upper extremities of the
screws 25 are made fast gears 27 meshing with gears 26 made fast to the feed
screws 10 just below the bevel gears 14.
The straight mold cutters 28 are secured to the cross-heads 20. To the straight
guides 23 are attached curved guides 29 engaged by cross-heads 30, to which are
attached the circle mold cutters 31, curved to conform to an are of any desired
radius. To the convex center of the circle mold cutters, is attached a shoe 32
whose upper portion is grooved to receive a straight bar whose extremities are
rigidly attached to the cross-head 20. This bar is provided with two lateral pro-
jections or trunnions 33" which engage vertical slots 32 formed in the shoe 32.
This construction permits the circle mold cutters and their cross-heads 30, to
reciprocate in a curve defined by the guides 29, while the saws and the straight
mold cutters, together with their respective cross-heads 8 and 20 reciprocate in
horizontal planes defined by the guides 12 and 23.
The mold cutters, whether straight or circular, are formed in sections suitably
connected. They are hollow (see Fig. 7) to receive the abrading material which
escapes by way of orifices A formed in the mold cutting wall and communicating
with grooves B formed in the stone cutting surface which is fashioned to conform
to any desired molding design. The mold cutters, as heretofore explained, are
arranged above the saws, and so located that the abrading material, after being
utilized by the said cutters, may fall into the channels or kerfs formed by the
saws and pass thence by way of the vertical grooves G to the bottom of the kerfs,
where the said material is again.utilized by the saws.
From the construction heretofore explained, the operation of my improved stone
cutting apparatus will be readily understood. Power being applied to the pitman 18,
the cross-heals S, 20 and 30, together with the saws and the mold cutters, both
straight and circular, are reciprocated by virtue of the construction and arrange-
ment of the parts heretofore described. The vertical adjustment of the guides 12,
23 and 29 is effected through the instrumentality of the feed screws 10 and 25
which are actuated by transmitting power from any suitable motor to a pulley 35
fast on one of the shafts 16.. The two shafts 16 are each provided with a pulley 30,
the two pulleys being connected by a belt 37. The saws are supposed to travel
faster than the mold cutters. Hence, the gears 26 fast on the screws 25 are larger
than the gears 27 fast on the screws 10 which effect the vertical adjustment of
the saw-guides 12. The mold cutters are allowed a vertical movement independ-
ently of the saws, by virtue of the vertical guides 19 through which are passed the
keys 21 of the cross-heads 20.
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. In a stone cutting machine, the combination of a stationary frame, a vertically
adjustable reciprocating frame mounted thereon, saws attached to the last named
frame, another vertically adjustable reciprocating frame also mounted on the
stationary frame, mold cutters attached to the last named frame, and a suitable

page_text: connection between the saw frame and the mold cutter frame, whereby the two
frames are reciprocated together, but vertically adjustable independently of each
other.
2. In a stone-cutting machine, the combination of a stationary frame, a verti-
cally adjustable reciprocating frame mounted thereon, saws attached to said frame,
another vertically adjustable reciprocating frame mounted on the stationary frame
above the saw frame, mold cutters attached to the uppermost frame and so arranged
that the abrading material may fall from the mold cutiers to the saws, and a suit-
able connection between the saw frame and the mold cutter frame whereby the
two frames are reciprocated together, but vertically adjustable independently of
each other.
3. In a stone-cutting machine, the combination with a stationary frame, of
guides vertically adjustable thereon reciprocating cross-heads mounted on the
guides, saws attached to the cross-heads, other vertically adjustable guides also
mounted on the stationary frame, reciprocating cross-heads mounted on said lasi
named guides, mold cutters attached to the cross-heads, and vertically slotted
guides connecting the saw cross-heads with the mold cutter cross-heads, whereby
the saws and mold cutters are reciprocated in unison, but adjustable independently
of each other.
4. In a stone-cutting machine, the combination with a suitable stationary frame,
of guides vertically adjustable thereon, reciprocating cross-heads mounted on the
guiles, saws attached to the cross-heads, other vertically adjustable guides also
mounted on the stationary frame, reciprocating cross-heads mounted on the said
last named guides, mold cutters attached to the cross-heads, vertically slotted
guides connecting the saw cross-heads with the mold cutter cross-heads, whereby
the saws and mold cutters are reciprocated in unison, but vertically adjustable
independently of each other, feed screws connected with the saw frame guides,
other similar-screws connected with the mold cutter frame guides, and a suitable
connection between the two sets of screws, whereby they may be simultaneously
operated.
5. In a stone cutting machine, the combination with a suitable stationary frame.
of guides vertically adjustable thereon, reciprocating cross-heads mounted on the
guiles, saws attached to the cross-heads, other vertically adjustable guides also
mounted on the stationary frame, reciprocating cross-heads mounted on the said
last named guides, mold cutters attached to the cross-heads, vertically slotted guides
connecting the saw cross-heads with the mold cutter cross-heads, whereby the saws
and mold cutters are reciprocated in unison, but vertically adjustable independ-
ently of each other, feed screws connected with the saw frame guides, other similar
screws connected with the mold cutter frame guides, and a suitable connection
between the two sets of screws, whereby they may be simultaneously operated at
different speeds, the screws for adjusting the saw frame moving the faster.
6. The combination with a suitable stationary frame, of vertically adjustable
straight guides mounted thereon, cross-heads mounted on said guides, curved guides
vertically movable on the frame and arranged to reciprocate in unison with the
straight guides, cross-heads engaging the curved guides, a circle mold cutter
attached to the last named cross-heads, a shoe fast on the convex surface of the
mold cutier, a bar rigidly attached to the cross-heads mounted on the straight guides
and connected with the shoe of the circle mold cutter, in such a manner as to allow
the bar to move in a straight line, while the mold cutter reciprocates in a curve.
7. The combination with a suitable stationary frame, of vertically adjustable
straight guides mounted thereon, cross-heads mounted on the said guides, curved
guides vertically movable on the frame and arranged to move in unison with the
straight guides, cross-heads engaging the curved guides, a circle molding cutier
attached to the last named cross-heads and arranged to operate in a vertical plane.
a shoe fast on the convex surface of the mold cutter, said shoe being grooved and
provided with vertical slots, a bar rigidly attached to the cross-heads mounted on
the straight guides and engaging the grooves in the shoe, the bar being provided
with lateral projections or trunnions engaging vertical slots in the shoe.

page_text: 8. In a stone cutting machine, the combination with a stationary frame, of the
vertically adjustable straight and curved guides mounted thereon, cross-heads
mounted on each set of guides, straight and circle mold cutters mounted on the
respective straight and curved guides, a bar attached to the cross-heads of the
straight cutters, and a suitable connection between said bar and the circle mold
cutters, whereby the straight and circle mold cutters reciprocate in unison, which
cach performs its proper function..
9. The combination with the stationary frame, of the vertically adjustable recip-
rocating frame mounted thereon, saws attached to this frame, a vertically adjust-
able reciprocating circle mold cutter frame also mounted on the stationary frame
and adapted to travel in the are of a circle, and a suitable connection between the
saw frame and the mold cutter frame, whereby the two frames are adapted to recip-
rocate in unison, but are independently adjustable vertically.
10. The combination with the stationary frame, of a reciprocating saw frame saws
attached to said frame, a reciprocating circle mold cutter frame, circle mold cutters
attached to said frame, the said saw and mold cutter frames being mounted on
the stationary frame, and a suitable connection between the saw frame and the
mold-cutter frame, whereby the two frames reciprocate in unison.
11. The combination with the stationary frame, of a reciprocating saw frame,
saws attached to said frame, a reciprocating straight mold cutter frame, straight
mold cutters mounted thereon, a reciprocating circle mold cutter frame, circle mold
cutters attached to said frame, the said saw and mold cutter frames being mounted
on the stationary frame, and a suitable connection between the saw frame and
the mold cutter frames, whereby all of the said frames reciprocate in unison.
12. A saw for cutting stone consisting of a blade having recesses in its cutting
edge and grooves extending from one edge to the other allowing the abrading
material fed into the kerfs from above, to pass to the lower edge of the saw.
13. A saw for cutting stone consisting of a blade having recesses formed in both
longitudinal edges, and transverse grooves formed in the side of the blade between
the recessed edges.
14. A device for forming stone molding, consisting of a hollow cutter adapted
to hold abrading material, its cutting surface being fashioned to conform to any
desired shape, the said cutting surface being provided with grooves, and orifices
leading from the hollow lindy portion of the cutter to the grooves of the cutting
surface through which the abrading material passes.
Dated this 15th day of August 1898.