Improvements in the Formation or Construction of Blades or Saws for Sawing or Cutting Stone.
Year: 1893

page_text: Date of Application, 24th Apr., 1893
Complete Specification Left, 22nd Nov., 1893—Accepted, 23rd Dec., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Formation or Construction of Blades or Saws
for Sawing or Cutting Stone.
I, JOHN THOMAS RIDDIOUGH of Bolton Woods near Bradford in the County of
York, Stone Merchant, do hereby declare the nature of this invention to be as
follows, that is to say:―
It consists of improvements in the formation or construction of blades or saws
for sawing or cutting stone whereby the sand, grit or other abrading substance or
substances is or are fed or supplied to said saws or blades in a more desirable
manner than heretofore.
In accordance with my invention I form grooves or furrows in the sides of the
blades or saws in such a manner that they will lead from the upper to the lower
edges thereof when same are in operating position.
These grooves or furrows may be perfectly perpendicular when the saws are in
their said operating positions or they may be inclined or at an angle to the
horizontal plane, or they may be of a zigzag or wavy-curved formation, and either
formed so that their intervening spaces shall occupy alternate positions or be
opposite each other.
By forming these grooves or furrows as above described, suitable spaces are
provided for the passage of the abrading substances fed in at the top of the saws or
blades, so that same may descend to intervene between the lower edges thereof and
the stone being operated upon thus facilitating, or enhancing their power for
performing, their functions.
DL: 0011
A
זי
2000
J. T. RIDDIOUGH,
Per Samuel Hey,
Agent.
COMPLETE SPECIFICATION.
Improvements in the Formation or Construction of Blades or Saws
for Sawing or Cutting Stone.
I, JOHN THOMAS RIDDIOUGH of Bolton Woods near Bradford in the County
of York, Stone Merchant, 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, that is to say :-
It consists of improvements in the formation or construction of blades or saws
for sawing or cutting stone whereby the sand, grit or other abrading substance or
substances is or are fed or supplied to said saws or blades in a more desirable
manner than heretofore.
In the accompanying sheet of drawings illustrative of my invention ;—
Fig. 1 is side elevation and Fig. 2 edge view of a sufficient portion of a saw or
blade to illustrate my improvement.
Fig. 3 is a perspective view of the form of blade shown by Figs. 1 and 2.
Figs. 4, 5 and 6 are similar views to Figs. 12 and 3 respectively but show a
slight alteration in the formation as hereinafter described.
Figs. 7, 8 and 9 are also similar views to Figs. 1, 2 and 3 respectively, and are
illustrative of certain modifications.
Figs. 10, 11 and 12 are again similar views to Figs. 1, 2 and 3 but show a simpler
formation of blade for purposes hereinafter described.

page_text: In accordance with my invention I form grooves or furrows 66 in the sides of
the blades or saws a in such a manner that they will lead from the upper to the
lower edges thereof when same are in operating position.
These furrows or grooves 6 6' may be perfectly perpendicular when the saws a
are in operating position and as shown by Figs. 10, 11 and 12, however when they
are thus formed it is only intended that a very finely granulated abrading
substance should be used in connection with them so that the furrows bb¹ are
thus only required to be very shallow by which the tensile strength of the saws
is left as great as possible, and further to thus have the said tensile strength
of the saws
as little impaired as may be, these furrows bb¹ are made to
occupy alternate positions on opposite sides of the blades or saws and are not
formed opposite each other since the blades would in that case be considerably
weakened.
In order that the tensile strength of the blades or saws may not be interfered
with, I form the grooves across same at an acute. or obtuse angle to their edges as
shown by Figs. 1, 2 and 3 in which case the area of a section along the furrows is
as great as that of a transverse section at right angles to the edges of any part of
the blade hence the tensile strength is fairly even throughout its entire length.
These slanting or inclined furrows may be parallel to each other on both sides of the
blades as shown by said Figs. 1, 2 and 3 or one series on one side of the blade may
be inclined in an opposite direction to the other series on the other side thereof as
shown by Figs. 4, 5 and 6.
Again in order that said tensile strength may be maintained, the furrows bb
may take a wavy or zigzag course across the blade as shown by Figs. 7, 8 and 9, in
which case also the area of a section along them is as great as that of one at any
part straight or transversely across same.
By forming these grooves or furrows as above described, suitable spaces are
provided for the passage of the abrading substances fed in at the top of the saws or
blades, so that same may descend to intervene between the lower edges thereof and
the stone being operated upon, thus facilitating or enhancing their power for
performing their functions.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is ;-
1. Saws or blades having furrows or grooves formed in them to allow the passage
of an abrading substance from one edge to the other without impairing the tensile
strength of said saws substantially as specified.
2. In the construction of saws for sawing stone the formation of furrows or
grooves on both sides thereof but not in positions opposite each other by which
method of formation the strength of said saws is as little impaired as possible
substantially as herein set forth.
Dated this 21st day of November 1893.
JOHN T. RIDDIOUGH,
Per Samuel Hey,
Agent.