improvements in Band Saw Machines.
Year: 1898

page_text: I, ALLEN RANSOME, of Stanley Works, Kings Road, Chelsea, London, Engineer,
do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in the construction of band saw machines,
more particularly with regard to those of the horizontal type used for sawing
logs, but also to such other types of band saw machines the design of which
lends itself to the adaptations hereinafter described.
To carry out my invention I make the driven pulley which carries the saw
with both outside and inside bearings so that it may have a motion in a direc-
tion away from the driving pulley for the purpose of giving any desired tension
to the saw and to compensate for any moderate variation in the length of the
same. In order to make the saw run in any desired position on the face of the
pulley, I provide a motion by which the shaft carrying the driven pulley can
be slightly tilted in a horizontal plane.
The mechanism by which both of these adjustments are made consists of two
screws working in nuts on slide bars which carry the bearings of the driven
shaft. These screws can be simultaneously turned by rotating a handwheel fixed
in front of the workman in charge and actuating by means of a shaft and bevil
wheels a spindle carrying two worms which gear with two worm wheels one on
each screw.
These screws regulate the tension of the saw, and the tilting of the
driven saw pulley shaft is attained by making the nut pertaining to one of the
screws in such a manner that it can be rotated independently of the nut on the
other screw; thereby moving only one end of the shaft. To effect this the above
mentioned nut is made in the form of a worm wheel which gears with a worm
and can be turned by a spindle and hand wheel.
Dated this Fifth day of December 1898.
improvements in Band Saw Machines.
I, ALLEN RANSOME, of Stanley Works, Kings Road, Chelsea, London, Engineer,
0 do hereby declare the nature of this invention and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement:―
My invention relates to improvements in the construction of band saw machines,
more particularly with regard to those of the horizontal type used for sawing
n

page_text: logs, but also to such other types of band saw machines the design of which
lends itself to the adaptations hereinafter described.
To carry out my invention I make the driven pulley which carries the saw
with both outside and inside bearings so that it may have a motion in a direc-
tion away from the driving pulley for the purpose of giving any desired tension
to the saw and to compensate for any moderate variation in the length of the
same. In order to make the saw run in any desired position on the face of the
pulley, I provide a motion by which the shaft carrying the driven pulley can
be slightly tilted in a horizontal plane.
The parts of the machine included in this invention are shown in detail on
Sheet No. 1 and generally on Sheet No. 2.
Fig. 1 (Sheet 1) is a part longitudinal section of the carrying frame.
Fig. 2 is a plan of the same.
Fig. 3 is a transverse section.
Fig. 4 (Sheet 2) shows in front elevation the band saw and pulleys mounted
on the frame.
Fig. 5 shows the same in plan.
The mechanism by which both these adjustments are made consists of two
screws A A working in nuts B B¹ on slide bars CC, which carry the bearings of
the driven. shaft D. These screws can be simultaneously turned by rotating a
hand wheel E fixed in front of the workman in charge and actuating by means
of a shaft F and bevil wheels Ga spindle H carrying two worm wheels KK one
on each screw. These screws regulate the tension of the saw, and the tilting of
the driven saw pulley shaft is attained by making the nut 131 pertaining to one
of the screws in such a manner that it can be rotated independently of the nut B
on the other screw; thereby moving only one end of the shaft. To effect this
the above mentioned nut B₁ is made in the form of a worm wheel which gears
with a worm L and can be turned by a spindle and hand wheel M.
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
A device for adjusting and stretching the band saw or blade consisting of the
hand wheel M actuating the combined worm wheel and nut B₁ by means of the
worm L.
Dated this Ch J
1
1000