Rotary Drill Page: 2 of 3
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UNITED
STATES
PATENT OFFICE.
LEONARD F. SEED AND LEE HARPER, OF MILLET, TEXAS.
ROTARY DRILL.
SPECIFICATION forming part of Letters Patent No. 717,630, dated January 6, 1903.
Application filed February 3,1902. Serial Nio. 92,469. (No model.)To all whom it may concern:
Be it known that we, LEONARD F. SEED and
LEE -IARPER, citizens of the United States,
residing at Millet, in the county of Lasalle
5 and State of Texas, have invented a new and
useful Rotary Drill, of which the following
is a specification.
Our invention is an improvement in well-
boring machines, and relates particularly to
io the class known as "rotary drills;" and the
object thereof is to provide a device in which
a continuous feed is supplied simultaneously
with the rotation of the pipe.
Another object of our invention is to pro-
15 vide a gripping device for positively holding
the pipe while it is being rotated, which will
at the same time permit of the pipe being
dropped into the shaft; and with these and
other objects in view our invention consists
2o in certain details of construction and novel-
ties of combination, as will be fully described
in the following specification,and pointed out
in the claims, reference being had to the
drawings, in which-
25 Figure 1 is a side elevation of our im-
proved drill. Fig. 2 is a detail section taken
about on the line 2 2 of Fig. 1, one of the
sliding heads being removed. Fig. 3 is a
cross-section on about the line 3 3 of Fig. 2.
30 Fig. 4 is a detail view of one of the feed-roll-
ers, and Figs. 5, 6, and 7 are detail views of
construction.
In the drawings, A represents a framing
upon which is suitably mounted a plate A',
35 having a raceway arranged centrally there-
in, in which are positioned antifriction-balls,
upon which rests a large cog-wheel B, that is
driven by a pinion C, which may derive its
power from any suitable. source. The-gear
4o B is provided with a central aperture, and
upon either side thereof are cast sockets B', in
which are held the lower ends of vertically-
extending U-shaped standards D, in which'
are slidably held arms E', projecting laterally
45 from a circular plate or disk E, which is pro-
vided with a series of depressions E2, that
communicate with each other and which ter-
minate at the center of the plate in an open-
ing EX, that extends entirely through the
50 plate, as shown. Working in each of these
depressions or guides is a sliding head F, each
having its forward or inner end terminating in Iarms F', in which are journaled feed rollers
or disks G. These sliding heads are prefer-
ably of the same width as the depression E2 55
and are retained therein by. means of plates
E3, which are arranged upon the top of the
disk and extend over and upon the sliding
heads, thereby securely holding the heads
against vertical movement and at the same 6o
time allowing a horizontal movement thereof.
The heads are controlled by screws II, that
are rotatably connected to the said heads and
work through threaded openings in the edge
of the plate, as shown, the screws having 65
suitable hand - wheels H', held upon their
outer ends, by which they are controlled.
One face of the arms E' is provided with
suitable aitifriction-rollers I, that may be
held in position by any suitable means, but 70
preferably by a slotted plate I'. These roll-
ers, however, are only arranged upon the side
of the arms that contact with the standards,
which is caused by the rotation of the gear,
and by this arrangement the friction between 75
the arms and standards is reduced to a mini-
mum.
In practice the pipe P, used for holding the
drill, is clamped between the rollers G when
the plate is in an elevated position. Power 8o
is then applied to the pinion which rotates
the gear, which carries the plate with it, and
by having the pipe securely clamped to the
plate causes it also to revolve simultaneously
with the dropping or feeding thereof, and in 85
practice we prefer to arrange springs S in the
lower ends of the standards to prevent jar-
ring when the plate reaches its lowermost po-
sition.
It will thus be seen that we provide a very 9o
simple and economical form of feed device
in which the old form of wooden clamps for
dropping is entirely dispensed with. We also
prefer to flute or roughen the face of the feed-
rollers, so as to insure a positive grip upon 95
the pipe.
Having thus fully described our invention,
what we claim as new, and desire to secure by
Letters Patent of the United States, is-
1. A device of the kind described, the com- io
bination of a gear having sockets formed there-
on, and an aperture formed therein, stand-
ards held by the said sockets, cushion-springs
arranged in the lower end of the standards,
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Seed, Leonard F. Rotary Drill, patent, January 6, 1903; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth509472/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.