IMPROVEMENTS SAWS
Year: 1867

page_text: LETTERS PATENT to Thomas Aldridge Weston, of Birmingham, in the
County of Warwick, Engineer, for the Invention of "IMPROVEMENTS
SAWS." A communication from abroad by Peter Cook, of
Tonawanda, County of Erie, State of New York, United States of
America.
-
Sealed the 9th June 1868, and dated the 11th December 1867.
PROVISIONAL SPECIFICATION left by the said Thomas Aldridge Weston
at the Office of the Commissioners of Patents, with his Petition,
on the 11th December 1867.
I, THOMAS ALDRIDGE WESTON, of Birmingham, in the County of Warwick,
Engineer, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN SAWS," a communication to me from abroad by Peter Cook, of
Tonawanda, County of Erie, State of New York, United States of America,
to be as follows, that is to say:-
This Invention relates to improvements in saws, and consists in con-
structing the teeth of a rectangular or nearly rectangular form, the tops of
the said teeth being bevelled to form a cutting edge throughout their entire
length, the cutting edge of each tooth coinciding with the line of motion of
the saw, and such cutting edge may be of equal length to its base or root.

page_text: The teeth
The bevel of each tooth is on the opposite side to the next one.
may be set in the ordinary way, the set or deflection being on the opposite
side to the bevel of the tooth.
The principal advantages derived from this improved construction of saws
are, the smoothness left on the cut surfaces of the wood, the freedom with
which saws so constructed pass through the material operated upon, and that
the saw cuts equally well in both directions.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Aldridge Weston in the Great Seal Patent Office
on the 9th June 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
ALDRIDGE WESTON, of Birmingham, in the County of Warwick, Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eleventh day of December, in the year of our
Lord One thousand eight hundred and sixty-seven, in the thirty-first year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Thomas Aldridge Weston, Her special license that I, the said
Thomas Aldridge Weston, my executors, administrators, and assigns, or such
others as I, the Thomas Aldridge Weston, my executors, administrators, or
assigns, should at any time agree with, and no others, from time to time and
at all times thereafter during the term therein expressed, should and lawfully
might make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention
for "IMPROVEMENTS IN SAWS," a communication from abroad by Peter Cook,
of Tonawanda, County of Erie, State of New York, United States of
America, upon the condition (amongst others) that I, the said Thomas
Aldridge Weston, my executors or administrators, by an instrument in
writing under my hand and seal, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to be per-
formed, and cause the same to be filed in the Great Seal Patent Office within
six calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Thomas Aldridge Weston, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and by the

page_text: following statement, reference being had to the accompanying Drawings and
to the letters and figures marked thereon, that is to say:―
The said Invention relates to improvements in the shape of the teeth
of saws, which improvements are equally applicable to circular and other
saws.
Figure 1 of the annexed Sheet of Drawings represents a portion of a
circular saw constructed with the improved teeth; Figure 2 is a portion of
a straight saw with the same teeth; and Figure 8 is an enlarged transverse
section showing the bevelling and set of the teeth.
According to this Invention the teeth a are of a rectangular or nearly
rectangular form, the tops of the said teeth being bevelled to form a cutting
edge throughout their entire length, as shown in Figures 1 and 2. The
cutting edge of each tooth coincides with the line of motion of the saw, and
such cutting edge may be of equal length to its base or root. The bevel of
each tooth is on the opposite side to the next one (see Figure 3), and the
teeth may be set in the ordinary way, the set or deflection being on the
opposite side to the bevel of the tooth. If desired, the ordinary clearing tooth
may be employed at suitable intervals along the saw.
The principal advantages derived from this improved construction of saws
are, the smoothness left on the cut surfaces of the wood, the freedom with
which they pass through the material operated upon, and the capability of
cutting equally well in both directions.
Having now described and particularly ascertained the nature of the said
Invention, and the manner in which the same is or may be used or carried
into effect, I would observe in conclusion that what I consider to be novel
and original, and therefore claim as the Invention secured to me by the
herein-before in part recited Letters Patent is, the construction of saws with
the peculiar teeth herein-before described and illustrated by the Drawings
annexed.
In witness whereof, I, the said Thomas Aldridge Weston, have to this
my Specification set my hand and seal, this Sixth day of June, One
thousand eight hundred and sixty-eight.
THO. A. WESTON. (L.B.)