Improvements in Saws.
Year: 1897

page_text: Improvements in Saws.
I, JAMES INGLE AKAM, of 52, Harris Street, Leeds Road, Bradford, in the
County of York, Packing Case Maker, do hereby declare the nature of this in-
vention to be as follows:
This invention relates to improvements in saws, and its object is to provide a saw
which will cut whilst moving in either direction.
For this purpose I form the teeth in pairs and leave a "gullet" between each
pair of teeth. The teeth alternately point in the reverse direction to each other
with the cutting points towards the gullets, and the sides of the gullets more or
less diverge towards the bottom to give a suitable rake to the teeth.
The teeth of each pair are "set" in the opposite direction to those of the
neighbouring pairs.
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Improvements in Saws.
I, JAMES INGLE AкAM, of 52, Harris Street, Leeds Road, Bradford, in the
County of York, Packing Case Maker, do hereby declaro 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 improvements in deep cutting reciprocating saws for
power driven saw frames, and its object is to provide a saw which will cut with
the grain whilst moving in either direction.
"
"
For this purpose I form the teeth in pairs and leave a gullet" between each
pair of teeth. The teeth alternately point in the reverse direction to each other
with the cutting points towards the "gullets" and the sides of the "gullets"
more or less diverge towards the bottom to give a suitable rake to the teeth. The
teeth of each pair are set "in the opposite direction to those of the neighbouring
pair.
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To more fully describe my invention reference is made to the accompanying
sheet of drawings forming a part of this Specification, in which similar letters of
reference indicate corresponding parts in each of the figures.
Figure 1, represents a portion of a saw blade having its teeth formed in

page_text: accordance with my improvements.
same looking towards the teeth.
Figure 2, represents an edge view of the
The teeth A cut when the saw moves in the direction of the arrow and the
teeth B when it moves in the opposite direction. The gullets C are formed
between each pair of teeth and the sides C2 are preferably inclined. The pairs of
teeth are set" in opposite directions, as shown in Figure 2.
The set of the teeth tends to stiffen them and I find they are not blunted so
quickly that is to say: the points are not rubbed off to the same extent in the back
stroke as in the case with the ordinary form of tooth, for in the back stroke the
teeth following immediately in the wake of those teeth that are cutting have a
way made for them and therefore do not press with so great a pressure upon the
wood when moving backwards.
The log is fed to the saw or saws at a uniform speed that is to say it is fed
the same amount whilst the saw is moving upwards as when it moves down. The
teeth of horizontally reciprocated deep cutting saws can be formed and set in
the same way.
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:-
66
"
A "deep-cutting" saw blade having teeth formed and set as shown in the
accompanying drawings.
DRACUP & NOWELL,
Patent Agents, Bradford.