General
Description of the
Flather
New Patent Screw Cutting Engine Lathes
The cut above represents
the new pattern Lathe, built by Flather & Co., Nashua, N.H. It has
been very carefully designed to meet the demand for a strictly first-class
tool, capable of doing the finest work, and stiff enough to take rapidly
and accurately the heaviest cut that can be put on this size machine.
This lathe is made to
gauges, and its parts are interchangeable. The head stock has hard hammered
steel spindle, and the bearings on spindle are ground perfectly true. They
run in hard bronze boxes, which can be renewed at anytime and be true with
the rest of the Lathe. The carriage and tool slides have unusually long
bearings. The screw and rod, which are of steel, are in front of the Lathe,
and both run in the same casting. A short shaft, on which is mounted the
feed cone and gears, is fitted in the long bearing in front of Lathe. The
shaft is held in position by a gear on one side and steel clutch on the
other. The shaft has a hole chucked into it 3 inches deep, and forms a
bearing for the feed rod, which is telescoped into and revolves freely
in it. On the feed rod is a clutch to interlock with clutch on short shaft
when in use. The screw is fitted in upper hole of same casting, and is
connected when in use by slip gear to the gear on short shaft, as shown
in cut. The rod connects with feedworks in the apron by the usual friction
feed, and the screw by open and shut nut, operated by a cam. The advantages
of this method of connecting feed rod and screw are: it is more compact,
the operator has better control of the feed, and it can be changed from
belt to gear feed instantly, or from fine feed to coarse, or the reverse,
quickly. In squaring up work with power cross feed, after taking a roughing
cut with the belt feed, the gear feed can be thrown in, and a finishing
cut from the finest up to 3/8 inch per revolution can be taken. The same
difference can be made with longitudinal feed; also a difference 3 to 1
can be made instantly in the feed by loosening the friction feed and feeding
with screw. All actuating screws are of steel, also all small gears and
studs. All nuts, wrenches, and screws are case-hardened.
Every Lathe is run and carefully tested before
leaving the works.
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