Year: 1899

page_text: Date of Application, 21st Feb., 1899
Complete Specification Left, 20th Nov., 1899-Accepted, 30th Dec., 1899
I, GEORGE ANDERSON, of the Firm of George Anderson and Company, Taymouth
Engineering Works, Carnoustie, in the County of Forfar, Scotland, Engineers and
Founders, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in stone sawing machinery, the objects
being to adjust the position of the saw relative to the stone without having to stop
its rotation; to limit its vibration as far as possible to apply the water to the saw
and keep it within bounds; to provide means for retaining and guiding or
carrying the water, sand and loose diamonds-if any-to a suitable receptacle, and
to independently vary the speed of the forward or the backward motion of the
feed table, the speed of the saw_preferably remaining constant.
In carrying out my invention, I provide a rigid foundation framing, above and
on which the feed table traverses on rollers by means of a nut and screw, such
screw being actuated by bevel wheels from a cross-shaft. Upright brackets
supported by and at each side of the foundation framing which is specially
wide there carry pillow blocks and bearings in which the shaft rotates which
carries the saw. Such saw can be made to slide along its shaft, when it is revolv-
ing, in the following manner:- -At each side if the saw shaft and parallel to its
axis is a cross-guide, the distance between these being such that the saw can rotate
without touching them. These cross-guides carry slides and screws which can
be synchronously actuated by means of pulleys, a pitch chain and a hand wheel.
On the slides is mounted a cross-beam with a slot in it for the saw; or even two
cross-beams, one on each side of the saw; such beam or beams being placed normal
to the axis of the saw shaft. The saw is mounted on, and rigidly held by a sleeve
which can slide along the shaft, but which is constrained to rotate with it by
means of a feather or feathers which extend between the two main bearings. The
sleeve is in three parts, one part being on the shaft and the other part on the
first part, the saw being held between these, while the third is screwed on the
first part pressing the second part against the saw, such screwed third part being
designed to tend to tighten when the saw is in motion. A stud is used to cause
the saw to move in unison with the sleeve. A plate fixed to the cross-beam
engages with a groove in the sleeve, the general arrangement being such that
by actuating the pitch chain, the cross-beam or beams are made to traverse across
the machine and with it the sleeve and the saw, the shaft rotating continuously, if
desired. Sometimes a supplementary bearing may be carried by the cross-beam in
order that the saw shaft may rotate without vibrating. To still further obviate
this tendency pads may be fixed to the cross-beam on one or both sides of the
These pads almost touch the sides of the saw and consequently they confine
its deflections within narrow limits. The saw shaft is driven by means of fast
and loose pulleys in the usual way from a countershaft. On the other extremity
of the saw shaft is a pulley which actuates a countershaft preferably near the
floor, and on such shaft is a speed cone. its purpose being to actuate another cone
on a parallel shaft. that is to say such parallel shaft may be driven faster or
slower as may be desired. This parallel shaft drives another by means of a
disengaging pinion on such parallel shaft and a wheel on the driven shaft, the
driven shaft being that which actuates the screw of the feed table by means of
bevel wheels, as previously explained. The shaft which directly actuates the feed
saw.

page_text: table screw may be made to directly rotate in the one direction or the other by
means of open or crossed belts and fast and loose pulleys actuated by a special
countershaft. When the shaft is being rotated in this manner the pinion on the
adjacent shaft is disengaged. By these means the feed table may be slowly moved
towards the saw, or it may be more quickly moved towards or away from it, as
may be required.
Water is led to the saw by pipes and is kept within bounds by means of a cover
which goes over the upper half of the saw, such cover being hinged to one of
the cross-guide slides and made to move with it.
The feed table is provided with a curved guard which rises up behind the saw
in such a manner that any sand or water which is thrown back will be caught
and made to fall into a trough which is fixed to the feed table, such trough going
round the two sides and the other end of the table. The trough is arranged to
have a continuous fall in order that the water and other refuse may flow into a
receptacle, such receptacle being arranged to arrest any diamonds which may have
come loose from the saw.
Dated this 18th day of February 1800
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicant.
I, GEORGE ANDERSON, of the Firm of George Anderson and Company, Taymouth
Engineering Works, Carnoustie, in the County of Forfar, Scotland, Engineers and
Founders, 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 improvements in stone sawing machinery, the objects
being to adjust the position of the saw relative to the stone without having to stop
its rotation to limit its vibration as far as possible to apply the water to the saw
and keep it within bounds; to provide means for retaining and guiding or
carrying the water, sand and loose diamonds-if any-to a suitable receptacle, and
to independently vary the speed of the forward or the backward motion of the
feed table, the speed of the saw preferably remaining constant.
And in order that my said invention and the manner of performing or carrying
the same into effect or practice may be properly understood, I have hereunto
appended three explanatory sheets of drawings in which the same reference
numerals are used to indicate corresponding parts in all the figures where shown,
that is to say-
Figure 1, (Sheet 1) is a side elevation of the machine.
Figure 2, (Sheet 2) is a plan.
Figure 3 (Sheet 3) is an end elevation looking on the front of the machine and
in the direction of the arrow A, (Figure 2).
Figure 4, (Sheet 3) is a cross-section of the table showing the water troughs.
Figure 5, (Sheet 3) is a sectional detail of the saw collar on an enlarged scale.
Figure 6, (Sheet 1) is a part external, part sectional view of one of the cross-
rails, showing the traversing screw.
Figures 7, and 8, (Sheet 3) are respectively a side and a front elevation of the
hardwood saw guides.
In carrying out my invention, I provide a rigid foundation framing 10, above

page_text: At
and on which the feed table 11, traverses on rollers 12, by means of a nut 13,
and screw 14, such screw being actuated by bevel wheels 15, and 16, from a
cross-shaft 17. Upright brackets 18, supported by and at each side of the
foundation framing-which is specially wide there-carry pillow blocks and
bearings 19, in which the shaft 20, rotates which carries the saw 21. Such saw can
be made to slide along its shaft, when it is revolving, in the following manner.
each side of the saw shaft and parallel to its axis is a cross-guide 22, the distance
between these being such that the saw can rotate without touching them. These
cross-guides carry slides 23, and screws 24, which can be synchronously actuated
by means of pulleys 25, a pitch chain 26, and a hand wheel 27. On the slides 23,
is mounted a cross-beam with a slot in it for the saw; or even two cross-beams 28,
one on each side of the saw; such beam or beams being placed normal to the axis
of the saw shaft 20. The saw is mounted on, and rigidly held by a sleeve 29,
which can slide along the shaft, but which is constrained to rotate with it by
means of a feather or feathers 30, which extend between the two main bearings.
The sleeve is in three parts, one part 29, being on the shaft and the other part 31,
on the first part, the saw being held between these, while the third 32, is
screwed on the first part 29, pressing the second part against the saw 21, such
screwed third part being designed to tend to tighten when the saw is in motion.
A stud 33, is used to cause the saw to move in unison with the sleeve. Plates 34,
fixed to the cross-beams 28, are in touch with each side of the sleeve, the general
arrangement being such that by actuating the pitch chain 26, screws 24, and
slides 23, the cross-beam or beanis 28, are made to traverse across the machine and
with them the sleeve 29, and the saw 21, the shaft 20, rotating continuously if
desired. Sometimes, although I have not shown it in the drawings, a supple-
mentary bearing may be carried by the cross-beam in order that the saw shaft
may rotate without vibrating. To still further obviate this tendency, hardwood
pads 35, may be fixed to the cross-beams on one or both sides of the saw. These
pads almost touch the sides of the saw and consequently they confine its deflections
within narrow limits. The pads slide in a socket 36, and the distance they
project can be regulated by a screw 37, and nut 38. The saw shaft 20, is driven
by means of fast and loose pulleys 39, in the usual way from a countershaft, not
shown. On the other extremity of the saw shaft is a pulley 40, which actuates a
countershaft 41, preferably near the floor and on such shaft is a speed cone 42,
its purpose being to actuate another cone 43, on a parallel shaft 44, that is to
say such parallel shaft may be driven faster or slower, as may be desired. This
parallel shaft drives another 17, by means of a disengaging pinion 45, on such
parallel shaft and a wheel 46, on the driven shaft, the driven shaft being that
which actuates the screw 14, of the feed table by means of bevel wheels 15, and 16,
as previously explained. The shaft 17, which directly actuates the feed table
screw may be made to directly rotate in the one direction or the other by means
of open or crossed belts and fast and loose pulleys 47, and 48, respectively, actuated
by a special countershaft. When the shaft is being rotated in this manner, the
pinion 45, on the adjacent shaft is disengaged. By these means the feed table may
be slowly moved towards the saw, or it may be more quickly moved towards or
away from it as may be required. 49, is a stone in position on the table showing
the saw just commencing to operate upon it.
Water is led to the saw by pipes
and is kept within bounds by means of a cover 50, which goes over the upper half
of the saw, such cover being hinged to one of the cross-guide slides and made to
move with it.
The feed table is provided with a curved guard 51, which rises up behind the saw
in such a manner that any sand or water which is thrown back will be caught
and made to fall into a trough 52, which is fixed to the feed table, such trough
going round the two sides and the other end of the table. The trough is arranged
to have a continuous fall in order that the water and other refuse may flow into a
receptacle, such receptacle being arranged to arrest any diamonds which may have
come loose from the saw.

page_text: When proceeding to operate on a stone, the table is moved into the position
shown in Figure 1, such adjustment being quickly caused by means of the shaft 17,
directly actuated by the fast and loose pulleys 47, and 48. The stone is laid and
properly bedded on such table and the saw is set in motion, the wheels 45,
and 46, being then in gear. The feed screw 14, is rotated by means of the
shafts 17, 44, and 41, actuated from the saw shaft 20, by means of the pulley 40,
as previously explained.
It is to be understood that the stone being operated upon is moved slowly forward
to the saw by means of the screw 14, which at that time is actuated by a train
of mechanism consisting of the pulley 40, shafts 41, 44, and 17, and wheels 45,
and 46.
When the saw is not in operation although it may be rotating, the table may
be more quickly moved forwards and backwards by means of the fast and loose
pulleys 47, and 48, directly actuating the shaft 17, the pinion 45, at that time
being out of gear. The saw can be traversed from side to side of the machine by
means of the hand wheel 27, pulleys 25, chain 26, traversing screws 24, beams 28,
and plates 34, as previously described.
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 diamond circular saws, the combination of a saw with a sleeve which
can be moved along a rotating shaft, substantially as described and illustrated on
the annexed drawings.
(2) In diamond circular saws, the combination of a saw with a sleeve, a shaft
supported by bearings, and sliding cross-beams actuated by screws, and chain and
wheels, substantially as described and illustrated on the annexed drawings.
(3) In diamond circular saws, the combination of a saw with a sleeve, a shaft
supported by bearings, sliding cross-beams actuated by screws, chain and wheels
and hardwood guides, substantially as described and illustrated on the annexed
drawings.
(4) In diamond circular saws, the combination of a feed table with an end
guard, water trough, and cover, as described.
(5) In diamond circular saws, the combination of a circular saw and a feed table,
substantially as described and illustrated on the annexed drawings.
(6) In diamond circular saws, the combination of a circular saw with a feed table
actuated either directly from the saw shaft, or independently by a countershaft
and fast and loose pulleys, as described.
(7) In diamond circular saws, the use of hardwood pads, as described and
illustrated more particularly by Figures 7, and 8, of the drawings.
(8) In diamond circular saws, the construction, arrangement and combination of
parts, substantially as described and illustrated by the accompanying drawings.
Dated this 15th day of November 1899.
GEO. C. DOUGLAS & Co.,
Chartered Patent Agents, 41, Reform Street, Dundee,
Agents for Applicant.