Improvements in Stone-sawing Machines.
Year: 1899

page_text: Date of Application, 28th Apr., 1899-Accepted, 8th July, 1899
COMIDEIE
Improvements in Stone-sawing Machines.
We, FREDERICK WALTER SHETTLEWORTHI, Superintendent, and EDWIN IRVING
BELL, Manufacturer, both of the City of Portland, County of Middlesex, State of
Connecticut, United States of America, do hereby declare the nature of this in-
vention 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 stone-sawing machines, the object being to provide
an improved apparatus of this character simple in construction and durable in
use, and particularly effective owing to the improved organization and assemblage
of the parts of such structure, for the purpose of which it is designed.
In the drawings accompanying and forming part of this specification, Figure 1
is a plan view of the main parts of the machine. Fig. 2 is a cross-sectional view
taken in line ww, Fig. 1. Fig. 3 is a face view, on an enlarged scale, of the
means disposed at each end of the saw-frame for supporting the same. Fig. 4
is a side view of the parts shown in Fig. 3, looking from the right to the left.
Fig. 5 is a perspective view of one end of one of the saw-frame side-bars and a
part of the 1-beain which supports the saws, the dotted lines illustrating the recess
into which the I-beam is fitted when the parts are assembled. Fig. 6 is a cross-
sectional view taken in line -, Fig. 3, and looking from the right to the left.
Fig. 7 is a cross-sectional view taken in line y-y, Fig. 3, and looking from the
right to the left. Fig. 8 is a cross-sectional view taken in line -, Fig. 3, and
looking downward. Fig. 9 is a detail view of one end of a saw, showing its mode
of assemblage with the I-beam Fig. 10 is a top view thereof. Fig. 11 is a side
view of the clamp connecting one of the transverse frame-bars with the I-beam.
Fig. 12 is a top view thereof; and Fig. 13 is a view of a form of track-rolls
different from those shown in Fig. 3 and the other figures herein before described.
Similar characters of reference designate like parts in all the figures of the
drawings.
The saw-frame may be supported by any suitable frame-work adapted for the
purpose, and usually comprises four upright posts or beams one adjacent to each
corner of the frame. In the present instance this framework is shown com-
prising four upright beams or posts 2, secured together at their lower and upper
ends by cross-beams 3 and 4, respectively.
The saw-frame (designated in a general way by A) in the present construction,
which may be its preferred construction if desired, comprises two side-bars 5
the major portions of which are preferably shown as tubular. Each of these
side-bars is provided with squared ends 6, and in the present instance these
squared ends are formed separate therefrom and are provided with tubular por-
tions 6' for insertion into the ends of the tubular side-bars, whereby a firm and
rigid construction is provided. These side-bars are connected at their ends by
transverse bars 7, and for this purpose the ends of the side-bars are shown pro-
vided with concaved seats 9, into which the transverse bars are fitted, they pre-
These transverse bars are bolted to the side-bars in some
ferably being tubular.
In the construction shown they are secured in position by tie-
suitable way.

page_text: bolts 10, extending entirely through said side-bars from end to end thereof,
being secured thereto intermediate their ends by suitable bolts 12. Adjacent to
each end of this saw-frame is disposed means for supporting the saw-blades, and
which means in the construction shown also constitutes a means for reinforcing
the frame. In the present instance this means comprises a pair of I-beams 13,
the ends of which are preferably fitted into recesses 14, (see Fig. 5,) formed for
this purpose, this construction being readily permitted owing to the squared
formation of the side-bar ends and are secured to said side-bars by bolted angle-
plates 15. By this assemblage a saw-frame rigid and firm in construction is
furnished. The saw-blade 16, (of which there may be any desired number,)
shown herein as a gang thereof, are secured to the I-beams by bifurcated bolts 17,
the bifurcated ends 17 of which receive the saw-blades, one extending above
and the other below the I-beam and being united at the outer side thereof by
plates and nuts. Each of the saw-blades is preferably constructed to carry two
sets of teeth of different efficiencies, one set at each edge, and for this purpose
one edge (herein shown as the lower edge of each blade) is formed for the recep-
tion of steel teeth 18, Fig. 2. The opposite edge is formed to receive diamond
teeth 19, whereby in operation the same saw-blades can be used with either the
diamond or the steel teeth.
The saw-frame-supporting means, in the form thereof herein shown and
described, comprises a plurality of sets of rolls, (shown herein as four sets,) one
set located adjacent to each corner of the saw-frame. For supporting these
rolls suitable means is provided, which in the form shown comprises an adjustable
support or traveling block 20, carried by each of the upright beams 2. Each
of these blocks 20 is formed at its rear side to slide upon a track or way 21,
secured to the beam 2, Fig. 8, and for this purpose it is provided with a
recess 22, having at one side thereof an inclined wall 23, its opposite side 24 being
straight, for the reception of the track 25, which is provided with a pair of in-
clined sides 26, one in engagement with the inclined wall 23 of the block and
the other in engagement with the inclined wall 27 of a strip 28, having its
opposite side 29 straight whereby it is also adapted to fit into said recesses 22,
being secured therein by a suitable fastening device, such as bolts 30. By
means of this construction the formation and assemblage of the block and its
way is permitted.
For adjusting the block, it is shown provided with an internally-threaded
sleeve 31, through which extends a screw 2, secured at its upper and lower ends
to the beam 2. Each of these screws 32 may be suitably connected by gearing
(not shown) whereby all may be operated simultaneously thereby to raise or
lower the blocks and thereby the saw-frame supported thereby. Each of these
travelling blocks 20 is provided with bearings 33 for the reception of roll-shafts
or journals, one of each set of which is so supported that the roll or rolls carried
thereby can be adjusted toward and from the other shaft. In the construction
shown each of these blocks is shown provided at its upper end with a pair of
journal-bearings having removable caps 34, while the lower ends of said block
is provided with a pair of split journal-bearings.
The direct means for supporting the saw-frame and for permitting the recipro-
cation thereof in a horizontal plane comprises a plurality of sets of rolls, (shown
herein as four sets and designated in a general way by B,) each set comprising a
plurality of rolls so organized that the saw-frame while supported for recipro-
catory movement in a horizontal plane will be prevented from lateral or sidewise
play and also so organized that the greatest amount of support will be at the
under side of said frame; and in the present construction each set of rolls com-
prises a three-point bearing.
At each end of the saw-frame is a transversely-extending shaft 35, mounted
in the upper bearings 33 of the traveling blocks 20, on which a roll 40 is 5
journaled adjacent to each end thereof, each end forming one of the rolls of its
respective set.

page_text: Mounted in the lower journals of each block is an eccentrically-formed adjust-
able shaft 36, carrying thereon a two-point bearing 37, which may be formed
as two separate and independent rolls, or as one roll having two independent
track-surfaces 41 and 42.
The track-surfaces of the rolls shown in Figs. 1, 3, 4, and 6 are V-shaped in
cross-section, whereby the rolls have inclined peripheral flanges to prevent lateral
movement of the saw-frame. For engagement with these rolls each squared end
of the saw-frame side-bars is provided with a series of tracks (shown herein one,
as 43, at the upper side and two, as 44 and 45, at the under side thereof) carried
by suitable brackets 46, these tracks being so disposed that the edges thereof
will fit into the grooves of the rolls.
Instead of forming the rolls as just described, and in order to materially de-
crease the friction which is present in such a construction, each upper roll may
be formed as a flat roll 47, Fig. 13, co-operating with a flat-faced track 431, carried
by the frame side-bar, while the lower two-point bearing 37 may comprise one
roll having a pair of right-angle flanges 48, or a pair of rolls having a right-
angle flange at its outer side, said bearing co-operating with a pair of flat-faced
tracks 44 and 45', carried at the under side of said side-bar. In this construction
it will be seen that the peripheries of the rolls (three in number) only are in
frictional engagement with the tracks, whereas in the other there are six
friction-surfaces in each set of rolls. Furthermore, it will be seen, also, that the
right-angle flanges of the lower rolls prevent lateral or sidewise movement of
the saw-frame during its reciprocatory operation.
It will be understood, of course, that the tracks of each set are of sufficient
length to permit the necessary reciprocatory movement.
Any suitable means may be used to reciprocate the frame on the rolls, such
means having a power-transmitting-connector 50, which in the present instance
is shown secured to one of the transverse bars 7 of the saw-frame. To prevent
the buckling of this bar it is shown clamped to one of the I-beams, and for this
purpose a pair of split-clamps 51 are shown secured to said transverse bar 7,
L-shaped bolts 52 extending therethrough and overlapping the I-beams at their
upper and lower sides. It will thus be seen that the means which clamps the
I-beam namely, the bolts--also constitutes a means for clamping the split-body
of the clamp itself to the transverse frame-bar, whereby a portion of the strain
imparted to the bar will be carried by the I-beam to which it is connected.
The operation of this improved machine will be readily understood without a
further description.
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 stone-sawing machine, the combination of a saw-frame, and means
for supporting said frame for reciprocatory movement in a horizontal plane
and comprising a plurality of sets of three-point bearings.
2. In a stone-sawing machine, the combination of a saw-frame, and means
for supporting said frame for reciprocatory movement in a horizontal plane and
comprising a plurality of sets of three-point hearings, each set located to have
one hearing at one side, and two in parallelism at the opposite side, of said
frame.
3. In a stone-sawing machine, the combination of a saw-frame, and means
for supporting said frame for reciprocatory movement in a horizontal plane and
comprising a plurality of sets of rolls, each set comprehending three rolls located
one above and two in parallelism below said frame and directly under said single
roll, and one or more of said rolls having flanges.
4. In a stone-sawing machine, the combination of a saw-frame having four sets
of independent tracks secured thereto, each set comprising three tracks disposed
one at one side of said frame and two in parallelism at the opposite side thereof,

page_text: and means for supporting said frame for reciprocatory movement in a horizontal
plane and comprising four sets of rolls, one set for each set of said tracks, each
set comprehending three rolls one in engagement with each of said tracks, and
one or more of said rolls having flanges.
5. In a stone-sawing machine, the combination of a saw-frame, and means for
supporting said frame for reciprocatory movement and comprising a plurality
of sets of three-point bearings comprising rolls, one or more of said rolls having
right-angled flanges.
6. In a stone-sawing machine, the combination of a saw-frame provided with
flat-faced tracks, and means for supporting said frame for reciprocatory move-
ment and comprising a plurality of sets of bearings comprehending rolls, each
set having one or more flat-faced rolls provided with right-angled flanges adapted
to engage the flat-faced tracks.
7. In a stone-sawing machine, the combination of a saw-frame, and means for
supporting said frame for reciprocatory movement and comprising a plurality
of sets of rolls, each set having its rolls adjustable toward and from each other.
S. In a stone-sawing machine, the combination of a saw-frame; means for
supporting said frame for reciprocatory movement and embodying one or more
eccentrically-supported rolls; and means for adjusting said rolls and saw-
frames in a vertical plane.
9. In a stone-sawing machine, the combination of a saw-frame; a set of tracks
secured adjacent to each corner of said frame, one at the upper and two in
parallelism at the under side thereof; a gang of saws carried by said frame;
four sets of rolls for supporting said frame for reciprocatory movement in a
horizontal path, each set comprising a pair of flanged and adjustable rolls sup-
ported at the under side of said frame for engagement with said parallel tracks,
and a roll at the upper side of the frame; and means for adjusting said frame in
a vertical plane.
10. In a stone-sawing machine, the combination, with framework comprising
four uprights each having a way and a screw carried thereon, of a traveling
block supported for movement in each way and having bearings at its upper
and lower ends supporting shafts; a roll carried by each upper shaft; a pair of
flanged rolls eccentrically supported side by side on each lower shaft; à saw-
frame reciprocatory in a horizontal path supported by said rolls and comprising
a pair of parallel side-bars having squared ends, transverse connecting-bars
tie-bolts extending through said parallel bars and clamping said transverse bars
in position, and an I-beam clamped to the squared ends adjacent to each end of
said frame a series of three tracks secured to said saw-frame adjacent to each
end thereof, one at the upper and two in parallelism at the under side thereof,
for engagement with said rolls; and a gang of laterally-adjustable saws carried
by said I-beans.
1
TX 1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicants.