AN IMPROVED SAW SPECIALLY ADAPTED FOR FOREST USE, AND IMPROVED SAW TEETH APPLICABLE TO SAWS GENERALLY
Year: 1866

page_text: LETTERS PATENT to William Edward Gedge, of the Firm of John
Gedge and Son, of No. 11, Wellington Street, Strand, in the County-
of Middlesex, Patent Agent, for the Invention of "AN IMPROVED SAW
SPECIALLY ADAPTED FOR FOREST USE, AND IMPROVED SAW TEETH APPLICABLE
TO SAWS GENERALLY."-A communication from abroad by Pierre Flamm,
of No. 15, Passage des Petites Ecuries, Paris, France.
Sealed the 30th October 1866, and dated the 23rd August 1866..
COMPLETE SPECIFICATION filed by the said William Edward Gedge
at the Office of the Commissioners of Patents, with his Petition and
Declaration, on the 23rd August 1866, pursuant to the 9th Section of
the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
EDWARD GEDGE, of the Firm of John Gedge and Son, of No. 11, Wellington
Street, Strand, in the County of Middlesex, Patent Agent, send greeting.
WHEREAS I am in possession of an Invention for "AN IMPROVED SAW
SPECIALLY ADAPTED FOR FOREST USE, AND IMPROVED SAW TEETH APPLICABLE TO
SAWS GENERALLY," and have petitioned Her Majesty to grant unto me, my
executors, administrators, and assigns, Her Royal Letters Patent for the
same, and have made solemn Declaration that the same is a communication
to me from abroad by Pierre Flamm, of No. 15, Passage des Petites Ecuries,
Paris, France.

page_text: NOW KNOW YE, that I the said William Edward Gedge, do hereby
declare that the following Complete Specification under my hand and seal
particularly describes and ascertains the nature of the said Invention, and the
manner in which the same is to be performed, reference being had to the
accompanying Sheet of Drawing, and to the figures and letters of reference
placed thereon.
4
The improved saw, the subject of this Invention, may be used for various
purposes, but its main object is to prevent the dangers which too often attend
the felling of green trees, because it permits the cutting of the large branches
freely, rapidly, and from a great distance while the tree is standing, and the
eventual felling of the tree without fear of damage to any young trees which
may surround it.
The linked or jointed forest saw, one of the ends of which
is represented full size on the accompanying Drawing, is composed of a
sufficient number of small metal blades a (Figure 1) jointed together, and
each of which is furnished with a double-cutting edge tooth of any shape;
these teeth are sufficiently bent outwards, alternately right and left, to give a set
to the saw; the vertical edges of these blades are also chamfered with the same
object. The two ends of the saw (which are identically alike) are each fixed
by a joint to a cylindrical and forked piece of iron b, the opposite end of
which is attached to a long rope of from 30 to 35 yards long at least. In
order to give the desired inclination to the saw in relation to the vertical line,
each of the above cylindrical pieces turns in a ring c, to which is suspended,
by a joint a light pendulum e; these rings may be fixed in every position by
a press screw f, or otherwise. Without specifying any shape of teeth, the
Inventor gives the preference to those shewn, Figure 1, for sawing thick
branches of light wood, and those shewn, Figure 2, for sawing hard wood or
thin branches; these teeth bite better and offer more resistance the nearer
their points approach an angle of 50. In using this forest saw a sufficient
inclination is first given to the linked or jointed blade in relation to the
pendulums to keep the blade, when sawing, from entering the trunk of the
tree. After having placed it saddle-wise on the branch to be cut, passing one
of the ropes and one of the pendulums over it either by means of a pole or by
climbing the tree, two workmen seize each the end of a rope and lightly stretch
them in moving from the tree in the direction of the imaginary triangular.
plane which would be produced in relation to the ground by the prolongation
of the plane indicated by the inclination given to the saw blade and limited
by the ropes. Having arrived at their respective places the workmen in
sawing pull their ropes alternately, each of the ropes being furnished with a
wooden handle.
The branch attacked will soon fall at the foot of the tree, a

page_text: cracking noise preceding its fall and warning the workmen to get out of
danger if necessary. This saw may be made of several patterns varying in
length and breadth.
Claim is made, firstly, to the exclusive use of saws constructed and
working substantially as berein-before described and illustrated
accompanying Sheet of Drawing.
Secondly, to the exclusive use of the teeth shewn, Figures 1 and 2,
whether applied to the jointed saw herein-before described, or to the blades
of saws without joints used by joiners or carpenters or in other trades.
In witness whereof, I, the said William Edward Gedge, have hereunto
set my hand and seal, this Twenty-third day of August, in the year of
our Lord One thousand eight hundred and sixty-six.
W. E. GEDGE. (L.S.)