An Improvement in Cold Iron Sawing Machines.
Year: 1888

page_text: Date of Application, 15th Aug., 1888
Complete Specification Left, 21st May, 1889-Accepted, 29th June, 1889
PROVISIONAL SPECIFICATION.
An Improvement in Cold Iron Sawing Machines.
JOSEPH HILL, George Street Works, Derby, Engineer, and ISAAC HILL, George
Street Works, Derby, Engineer, do hereby declare the nature of this invention to
be as follows:-
Our present Invention is an arrangement of gearing, fixed to our present existing
Cold Iron, and Steel Sawing Machines (vide Specification No. 14,429 1885 lines 8
to 13) for the purpose of dispensing with the driving worm, and worm wheel, such
worm, and worm wheel, now being used for revolving the saw spindle, which carries
the saw.
The arrangement as hereafter described, is to prevent, and obviate the great
amount of friction, and loss of power, consequent upon the use of the worm, and worm
wheel.
The present driving of the saw spindle, is by a worm wheel geared into a worm,
which slides on a feather key in the driving shaft. In dispensing with the worm
wheel, we substitute a bevil wheel, which is fastened on to the saw spindle; this bevil
wheel is geared into another bevil wheel, which is secured to a short shaft, which has
been previously provided; this said short shaft is carried in suitable bearings arranged
on the saw spindle carriage; on the other end of this said short shaft, we provide, and
fit, a spur wheel which over-hangs the saw spindle carriage, and is geared with a
second spur wheel; this second spur wheel is fitted on to a sleeve, or brush, of
suitable length, made to fit the main driving shaft, and slides upon a feather key,
in the said driving shaft, the said sleeve, or bush, being carried or supported, in
suitable bearings underneath the saw spindle carriage.
Dated thin ambaouth day of A nonc 1008
JOSEPH HILL.
ISAAC HILL.
COMPLETE SPECIFICATION.
An Improvement in Cold Iron Sawing Machines.
JOSEPH HILL, George Street Works, Derby, Engineer, & ISAAC HILL, George
Street Works Derby, Engineer, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
Our present invention is an arrangement of gearing, fixed to our present existing
Cold Iron and Steel Sawing Machines, for the purpose of dispensing with the
driving worm A Sheet I, and worm wheel B Sheet I, such worn, and worm wheel
now being used for revolving the saw spindle C, Sheet I & II, which carries the
saw. The arrangement as hereafter described; is; to prevent & obviate the great
amount of friction, and loss of power consequent upon the use of the said worm,
and worm wheel.
The present driving of the saw spindle is by a worm wheel B Sheet I, geared
into a worm A Sheet I, which slides on a feather key X Sheet I, in the main driving
shaft D Sheet I.
In dispensing with the worm wheel B Sheet I, we substitute a bevil wheel E
Sheet II, which is fastened on to the saw spindle C Sheet II, this bevil wheel is
geared into another bevil wheel F Sheet II, which is secured to a short shaft G
Sheet II, which has been previously provided; this said short shaft G Sheet II, is
carried in suitable bearings H & H Sheet II, arranged on the saw spindle carriage J
Sheet II; in the centre of this before mentioned short shaft G Sheet II, is fitted, and
secured, a spur wheel L Sheet II, which revolves between the bearings H & H¹

page_text: Sheet II, on the saw spindle carriage J Sheet II, this spur wheel L Sheet II, is
geared with a second spur wheel M Sheet II, having on either side a boss O & O'
Sheet II, formed with it, which is bored to fit the main driving shaft D Sheet II,
and slides upon a feather key X Sheet II, on the said driving shaft D Sheet II;
the before, mentioned spur wheel M Sheet II, is carried by two bearings N & Ni
Sheet II, formed on the underside of the saw spindle carriage J Sheet II.
The arrangement is so simple, that it will be at once seen, that as the main shaft D
is revolved; the spur wheel M Sheet II, will revolve spur wheel L Sheet II, and
consequently the bevil wheel F Sheet II, being geared with bevil wheel E Sheet II,
will be revolved also, and thus the saw spindle.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is,
1st. The entire combination and application of the invention as set forth in the
specification, and illustrated in the accompanying Sheets of Drawings.
Dated this Fifteenth day of M... 1000
JOSEPH HILL.
ISAAC HILL.