Improvements in Boring, Drilling, and like Machines.
Year: 1897

page_text: Improvements in Boring, Drilling, and like Machines.
I, CHARLES WILLIAM BATE CROSSLEY, of 14, Floor Street, Johnstone, Renfrew-
shire, Scotland, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object to provide a quick return motion obtained by
the disconnecting of a worm at one end and a worm wheel at the other end of the
hand wheel feed shaft, said shaft being carried in an eccentric sleeve which on being
partly rotated disconnects the aforesaid worm from its wheel and the worm wheel
from its worm, and connects instead a train of spur and bevel wheels to the rack
pinion which actuates the spindle of the machine to which it is applied, thus
enabling a quick and slow motion to be got thro the same hand wheel and
shaft. When the worm wheel on the rack pinion and the worm actuating the
worm wheel on the aforesaid hand wheel feed shaft are not in the same plane I
also use an eccentric sleeve having the hand wheel feed shaft running through
it at an angle, giving an inclined eccentric motion to the aforesaid hand wheel
feed shaft when the eccentric sleeve is partly rotated.
Doted this 25th dor of Mov 1807
D. F. MASON,
Patent Agent.
COMPLETE SPECIFICATION.
Improvements in Boring, Drilling, and like Machines.
I, CHARLES WILLIAM BATE CROSSLEY, of 14, Floor Street, Johnstone, Renfrew-
shire, Scotland, 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: -
My said invention has for its object to provide a quick return motion of the feed
mechanism of boring, drilling and such like machines.
And in order that my said invention and the mode or manner in or under which
the same is or may be practically carried into effect may be properly understood
I have appended the annexed sheet of drawings illustrating part of a
machine constructed in accordance with my said invention and whereon, Fig. 1 is
a front elevation of a radial drilling machine saddle; Fig. 3 a part plan showing
the wheels connected with the spindle Fig. 2 a sectional elevation of inclined
eccentric sleeve carrying the feed shaft, and Fig. 4 an enlarged plan of same.
According to the invention the feed shaft a has a worm c at upper end and a
Price 8d 1

page_text: worm wheel e at the other end thereof. Said shaft a is carried by an eccentric
sleeve g the hole therethrough being formed (as shown at Figs. 2 and 4)
eccentrically and inclined from axial plane therein. This sleeve g on being partly
rotated (about a half revolution) by handle m affixed thereto, for the quick-return
motion, d'sconnects the worm c from its worm-wheel i and the worm-wheel e from
its worm, (not shown) and connects instead the spur-wheels n, o, which drive the
bevel wheels and rack pinion (as shown at Figs. 1 and 3) which actuates the
spindle s of the machine; thus enabling a quick and slow motion to be got through
the same hand-wheel and shaft a.
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:-
-
1st. In boring, drilling and such like machines the particular combination in
the particular manner of parts of mechanism, whereby a quick return or slow
feed motion of the spindle s may be had from the same feed shaft a, as hereinbefore
described and shown on drawings.
2nd: In combination with the feed shaft a of a boring, drilling or similar
machine, an inclined eccentric carrying sleeve g, as and for the purposes set forth
and shown.
:
Dated this 25th day of February 1898
DAVID F. MASON,.
Patent Agent, Glasgow.