IMPROVEMENTS APPLICABLE TO BAND SAWS
Year: 1876

page_text: LETTERS PATENT to William Lanfear, of Kingsland, in the County of Middlesex,
for the Invention of "IMPROVEMENTS APPLICABLE TO BAND SAWS."
PROVISIONAL SPECIFICATION left by the said William Lanfear at the
Office of the Commissioners of Patents on the 11th December 1876.
88
WILLIAM LANFEAR, of Kingsland, in the County of Middlesex. IMPROVEMENTS
APPLICABLE TO BAND SAWS"
Endless band saws have heretofore been usually constructed and arranged in such
a manner as to be driven by means of some motive-power engine, and therefore can
only be used where such power is available.
The object of the present Invention is so to construct and arrange the driving
gear of endless band saws that they may be driven either by steam power, by
hand power, or by means of a treadle, so that these useful tools may be used
in various localities and under circumstances where they could not otherwise be
employed.
In carrying out my Invention I adapt to the lower shaft or axle of the band saw
a fly wheel, to one of the arms of which I secure a crank pin which I connect by
means of a link or connecting rod to a treadle lever placed below, so that it may
be worked by the foot of the attendant while the latter is watching the sawing
operation on the table.
Sometimes it may be found convenient that the workman should be relieved from
the labor of driving the machine, and that an ordinary labourer should be
employed for this purpose. To this end I adapt to one of the arms of the fly wheel
a handle, so that when the crank pin and connecting rod are removed the machine
may be driven by hand power. If preferred the winch handle may be adapted to
a separate wheel, and the notion of the latter communicated to the shaft of the
band saw by toothed or other gearing.
As it will be convenient that the endless band saw should also be capable of
being driven by other power than by treadle or winch, I adapt to the main shaft of

page_text: the machine a pulley which is capable of receiving a driving band, so that when
properly secured in place it may be driven by horse power, by a wind or water mill,
or by a steam engine when either of these motive agents is available.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Lanfear in the Great Seal Patent Office on the 11th June
1877.
WILLIAM LANFEAR, of Kingsland, in the County of Middlesex. "IMPROVEMENTS
APPLICABLE TO BAND SAWS."
Endless band saws have heretofore been usually constructed and arranged in
such a manner as to be driven by means of some motive-power engine, and there-
fore can only be used where such power is available.
The object of the present Invention is so to construct and arrange the driving gear
of endless band saws that they may be driven either by steam power, by hand
power, or by means of a treadle, so that these useful tools may be used in various
localities, and under circumstances where they could not otherwise be employed.
In the accompanying Drawing, Fig. 1 is a side elevation of a band saw complete,
showing triple driving gear adapted thereto according to my Invention; Fig. 2 is a
front elevation of the lower part of the machine shewing the driving gear and the
lower pulley of the band saw.
In carrying out my Invention I adapt to the lower shaft or axle a of the band
saw a fly wheel b, to one of the arins of which I secure a crank pin c which I
connect by means of a link or connecting rod d to a treadle lever e placed below
so that it may be worked by the foot of the attendant while the latter is watching
the sawing operation on the table f
Sometimes it may be found convenient that the workman should be relieved from
the labour of driving the saw by means of the treadle, and that an ordinary labourer
should be employed for the purpose of actuating the machine. To this end I adapt
to one of the arms of the fly wheel ba handle, shewn by dots at g, Fig. 2, so that
when the crank pin c and connecting rod d are removed the machine may be driven
by hand power. If preferred the winch handle g may be adapted to a separate
wheel, and the motion of the latter communicated to the shaft a of the band saw by
toothed or other gearing, as indicated by dotted lines in the Figures at k, k. In
this case however it will be necessary to remove the fly wheel b in order to give
room for the handle of the large toothed wheel to pass. Or the winch handle may
be cranked and adapted to the crank pin c of the treadle arrangement, as indicated
by dots at l, l, in the Drawing. By this arrangement the treadle and hand power
can be used in combination when required. As however the shaft a will usually be
required to be driven faster than a man can conveniently turn it by hand, it
is preferable to adopt the separate wheel and gearing as shewn at k, k.
As it will be convenient that the endless band saw should also be capable of being
driven by other power than by treadle or winch, I adapt to the main shaft a of the
machine a fast and loose pulley which is capable of receiving a driving band, so
that when the machine is properly secured in place it may be driven either by horse
power, by a wind or water mill, or by a steam engine, when either of these
motive agents is available. The endless band saw is mounted in the usual
manner on the two pullies and j¹, the upper one of which is adjustable vertically,
as shown in the Drawing, for the purpose of tightening the endless band saw should
it become slack by wear. This adjustment however forms no part of my present
Invention.
Having now described my Invention of "Improvements Applicable to Band
Saws," and having explained the manner of carrying the same into effect;.I claim as
the Invention secured to me by Letters Patent as aforesaid, the adaptation to

page_text: endless band saws of two or more different arrangements of driving mechanism, so
that the main shaft may be driven either by treadle, by hand power, or by a band
actuated by any suitable motive-power engine as herein set forth.
In witness whereof, I, the said William Lanfear, have bereunto set my hand
and seal, this Ninth day of June, in the year of our Lord One thousand
eight hundred and seventy-seven.
WILLIAM LANFEAR. (L.S.)