No. 4 Standard
Universal Milling Machine.
Made by Brainard Milling
the present year, and made from new patterns. Nearly as large and heavy
as No. 3, but being without back gearing is sold at a lower price. The
driving cone is very large, and has five changes of speed for a 2-1/2-inch
driving belt. Diameter of largest cone pulley is 13 inches; smallest, 6
inches. If preferred, a 4-step cone pulley, taking a 3-1/2inch belt, can
be substituted for the 5-step pulley.
Weight, complete, boxed for shipment, 2,000
pounds. Weight of machine alone, without attachments, about 1,300 pounds.
There are four changes
of feed, and the tension of feed belt can be regulated without unlacing.
The spindle is large, and is forged from a high grade of steel, with 5/8-inch
hole through its entire length; the bearings are long and compensating,
with dust cap at front end of spindle.
The work table is T-slotted,
both lengthwise and crosswise, and has oil channel surrounding it. This
table has an automatic feed of 18 inches at a right angle with the spindle,
can be accurately adjusted vertically by means of the elevating dial, which
is furnished with adjustable finger, and graduated to thousandths of an
inch. This machine is fitted with Brainard's new patent quick return movement
for the table, shown in the cut above.
This machine is furnished
either with overhanging arm or without it. When used with arm it will take
an 8-inch mill, and will mill 12 inches from face of machine.
Vertical range of work
table, 16 inches. Cross motion in line with spindle, 5 inches. Size of
fast and loose pulleys, 12 inches diameter, 3-1/2 inches face. Speed of
countershaft should be about 120 revolutions per minute, which gives a
range of 55 to 260 revolutions per minute to the spindle.
Price, without attachments or overhanging
arm . . . . . $375.00
" with overhanging
arm . . . . 400.00
Price & illustration of