The White Pine news. [volume] (Ely, Nev.) 1906-1910, 1907-08-15
LATEST PRODUCTS OF
AMERICAN FACTORIES

MOTOR DRIVEN HACK SAW
Robertson Manufacturing Co., Buff
falo, N. Y.-Because of the many
uses and applications of these ma
chimes compact and close connection
was desirable, and was obtained by
mounting the motor under the bed
at the rear end, where it occupies
no extra space. The starting box is
mounted on the outside of the legs,
also at the rear end. The pinion
on the motor and the intermediate
pinion are of fibre, metal pushed for
set screws. The other gears are cut
from solid metal. The motor is of
one-fourth horsepower and is fur
nished for either direct or alternat-
ing current. The saw is of the regu-
lar type, having an automatic stop
gravity feed and quick starting
clutch. One has an adjustable frame
capable at its greatest extension of
using a seventeen-inch blade for cut
ting stock up to eight by eight inches
For smaller work a shorter blade
can be used by adjusting the outer
arm on the top bar. The equipment
is one especially useful for cutting
long stock in all shapes.
HACKSAW BLADE.-Henry Diss-
ton & Sons, PHILADELPHIA, Pa.-The
material in the blade possesses the
peculiar qualities of high-speed steel,
making it specially adapted for saw
blades to be used for cutting metal;
it so takes the special hardening and
tempering that the teeth of the blade
will not crumble off.
The teeth are milled in, which
gives square cutting edge to the
points, as we'll as the proper pitch
or angle for cutting metal. The en-
tire square cutting edge of the tooth
comes in contact with the work,
while with some other blades, on ac-
count of the manner in which they
are toothed and set, only a slight
corner of the tooth does the cutting.
The advantages in the blade are
brought about by the manner in
which it is toothed, and by the i'm
proved method of setting the teeth,
both of which insure rapid and true
cutting.
GEAR CUTTING MACHINE
Newton Machine Tool Works, Phila-
delphia, Pa.-These machines are
capable of cutting gears up to forty
inches in diameter and were design
ed with the view of driving stimuli
taneously three specially shaped cut
tiers for three and one-half inches
circular pitch teeth, SO that one tooth
III ct ind mo no r
ter driving spindle is five inches in
diameter, and is mounted on an aux
Hilary slide having cross adjustment
for convenience in setting cutters.
1t is driven from 10-horsepower va
riable speed motor through spur and
spiral gears and steep lead worm
wheel and hardened steel worm. The
different speeds of the motor in con-
nection with the back gearing give a
total speed range of eight to one.
The cutter arbor is three inches in
diameter and is driven by a broad
face key. The cupboard bearing is
fitted with a split bronze bushing
which has parallel internal and taper
outside bearing surfaces with adjust
ing nuts to compensate for wear, and
is arranged to permit close adjust
ment to the cutters regardless of the
length of the arbor. The saddle is
counterweighted, and has nine
changes of position geared feed for
each of the cutter speeds indepen-
dent quick return and an adjustment
of eighteen inches. The changes of
feed are obtained through the gear
box on the side of the column. The
feeding movement is driven through
the right hand vertical shaft and the
constant quick return through the
left hand vertical shaft. The first
is driven through level gears and
drives a worm on the horizontal shaft
at the top of the column; the sec
ond is driven and drives through spi-
raj gears. The gear box for the feeds
and the spiral gear at the lower end
of the quick return shaft are driven
from horizontal shaft extending
through the base in prolongation of
the motor shaft.
COMBINATION AIR AND WATER
HEATER-Meyer Furnace Co., Pc
oria, Ill.-The heater proper con-
sists of steel shell from which the
products of combustion are discharg-
ed into a crescent-shaped radiator in
the rear, arranged so that all of its
surface is subjected to the heat of
the gases by means of special fiue
with partitions. The
firepot is made of cast iron and in
sections. These sections are placed
within the shell forming the combus-
ton chamber to provide an air space
between the two, so that air enter
ing through the draft doors in the
ashpit can either rise directly
the fire or pass outside of