IMPROVEMENTS CONNECTED WITH COM- BINATION SAW BENCHES
Year: 1879

page_text: LETTERS PATENT to Thomas Lees, of Park Foundry, Hollinwood, Manchester,
Engineer, for the Invention of "IMPROVEMENTS CONNECTED WITH COM-
BINATION SAW BENCHES."
Sealed the 26th August 1879, and dated the 19th April 1879.
PROVISIONAL SPECIFICATION left by the said Thomas Lees at the Office of
the Commissioners of Patents on the 19th April 1879.
THOMAS LEES, of Park Foundry, Hollinwood, Manchester, Engineer. "IMPROVE-
MENTS CONNECTED WITH COMBINATION SAW BENCHES."
These improvements consist principally in the mode or method of driving that
class of saw machinery in which both the circular saw and the band saw are
attached to the same frame.
The object of my Invention is to provide for a more speedy and effective
working of either the band or circular saw than has hitherto been attained, which
I accomplish by the application of five pulleys upon the same driving shaft, three
of which are loose, and two fast, those at the extreme ends of the shaft being fast,
whilst the three intermediate ones are loose; or by an arrangement of four pulleys
on one shaft, one only of which runs loose (the other arrangement as before
described remaining the same), I am enabled to run both the band saw and circular
saw in contrary directions at one and the same time.
The shaft upon which the pulleys work I place at either end of the bench,
whichever is most convenient, and by preference, at the foot thereof.
The motive power to the band saw is obtained by the application of a cross-strap,
crossed for the purpose of giving the band saw a reverse motion to that of the
circular saw, which circular saw motion is obtained from an open strap on one of
the five pulleys revolving on the same shaft.
By means of a rack and pinion attachment, I can at will drive either the
circular saw, or the band saw, and instantly change the motion from one to the
other; this attachment is placed in the frame.
To the upper part of the bracket, upon which two of the band saw pulleys
revolve, I place a steel band to act as a spring, for the purpose of regulating the

page_text: tension of the band saw as it becomes heated in the process of working, which
spring I regulate by means of a screw or screws, placed in such a position that the
spring may be pressed or released when found necessary for the better working of
the band saw.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas Lees in the Great Seal Patent Office on the 17th October
1879.
THOMAS LEES, of Park Foundry, Hollinwood, Manchester, Engineer.
MENTS CONNECTED WITH COMBINATION SAW BENCHES."
"IMPROVE-
These improvements consist principally in the mode or method of driving that
class of saw machinery in which both the circular saw and the band saw are
attached to the same frame.
By my Invention I provide for a more speedy and effective working of either
the band or circular saw than has hitherto been attained, which I accomplish by
the application of five pulleys upon the same driving shaft, three of which are
loose and two fust, those at the extreme ends of the shaft being fast, whilst the
three intermediate ones are loose; or by an arrangement of four pulleys on one
shaft, one only of which runs loose (the other arrangement as before described
remaining the same), I am enabled to run both the band saw and circular saw in
contrary directions at one and the same time.
The shaft upon which the pulleys work I place at either end of the bench,
whichever is most convenient, and by preference at the foot thereof.
The motive power to the band saw is obtained by the application of a cross
strap, crossed for the purpose of giving the band saw a reverse motion to that of
the circular saw, which circular saw motion is obtained from an open strap on one
of the five pulleys revolving on the same shaft.
By means of a rack and pinion attachment, I can at will drive either the
circular saw or the band saw, and instantly change the motion from one to the
other; this attachment is placed in the frame.
To the upper part or portion of the bracket, upon which two of the band saw
pulleys revolve, I place a steel band to act as a spring for the purpose of regulating
the tension of the band saw as it becomes heated in the process of working, which
spring I regulate by means of a screw or screws, placed in such a position that the
spring may be pressed or released when found necessary for the better working of
the band saw.
For the purpose of more readily boring timber I place an auger upon the end of
the saw spindle, near to which is fitted a bracket with sliding top for the purpose
of carrying the timber intended to be so treated.
Having now described my Invention and the mode or method the same is to be
performed, and illustrated by the accompanying Sheet of Drawings, which do not
require letters of reference attached thereto, I wish it to be understood that what
I claim is,
First. The improvements connected with combination saw benches, substantially
as herein described and illustrated.

page_text: Secondly. The application of five pulleys upon the same driving shaft for the
purpose of driving either the band or circular saw at will, as herein described and
illustrated.
Thirdly. The application of four pulleys on one shaft as described in the fore-
going Specification for the purpose of running both the circular and band saws
at one and the same time, and in contrary directions when deemed necessary.
Fourthly. The application of a spring in the shape of a steel band to the upper
portion of the bracket, for the purpose of regulating the tension of the band saw,
substantially as herein described and illustrated.
In witness whereof, I, the said Thomas Lees, have hereunto set my hand
and seal, this Sixteenth day of October, One thousand eight hundred and
seventy nine.
Witness,
W. HL SMITH,
Engineer and Patent Agent,
3, York Buildings,
Dale Street,
Liverpool.
THOMAS LEES. (Ls.)