Wood-Boring Machine. Page: 3 of 3
[1], 2 p. : ill. ; 23 cm.View a full description of this patent.
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815,256
at this end in bearing X, arranged on the
bracket B. To the forward end of spindle V
is secured a collar Y, preferably in two halves.
The outer diameter of this collar fits the in-
5 ner guide-ring c, that is held adjustablyin po-
sition by screws d passing through the sides
of outer ring e, which is provided with a
bracket f, extending downward and secured
centrally to the base of head-block E. The
xo car D, carrying the piece of timber to be
bored, is advanced by means of a horizontal
screw q, that is journaled at one end in the
bracket B, the other end being fitted to a nut
h and secured centrally to the lower side of
15 head-block base E. Near the end of screw
adjacent to the bracket B are secured pulleys
i of different diameter, over one of which a
belt j passes and thence upward and over a
corresponding pulley k, secured to the spin-
20 dle V, by which as the spindle revolves the
screw is driven and the car drawn slowly for-
ward.
The boring mechanism, as before stated,
comprises a tubular shank or spindle V, its
25 inner diameter governing the size of cote that
will be left, suitable spiral ribbons or threads
m wrapped thereabout to form a double heli-
cal thread along the shank, and a cutter-head
comprising a collar Y in two halves, reinov-
30 ably attached to the forward end of the tube
by screws n, each half of the said collar being
provided witn a forwardly-projecting lip o,
conforming in shape to the outer circumfer-
ence of cutting-bits p and forming a support
35 for same. The two cutting-bits are substan-
tially U-shaped, formed with oppositely-dis-
posed cutting-lips. The curved parts of these
bits are of suitable width to cut an annular
opening large enough to receive the body of
40 auger freely and to admit of the remaining
core passing looselywithin the body of auger,
and they are secured to the outside of tube by
suitable screws r.
To bore a hole longitudinally in the center
45 of a column or the like, an operation of the
apparatus would occur substantially as rol-
lows: The car is first set in retracted position,
and the column to be bored is then suitably
supported and clamped by the head-blocks
50 concentric with the boring-spindle. Power
is then applied to pulley W, so as to rotate
the auger, which simultaneously turns thescrew g, that advances the column against the
cutting-bits until a hole of any desired depth
is formed, the chips being carried out by the 55
spiral threads wrapped about the pipe and a
core of wood loosely fitting the inside of pipe
passing within it.
It will be noted that with our device we cut
away only a small portion of wood generally 6o
required for producing a hole of large size,
but remove it in round straight lengths,
adapted for use as hand-rails and similar pur-
poses.
Having thus described our invention,what 65
we claim as new, and desire to secure by Let-
ters Patent of the United States of America,
is-
1. In a wood-boring machine, the combina-
tion with a hollow auger-spindle, of a cylin- 70
drical cutter-head secured on the end thereof,
said cutter-head consisting of two parts each
provided with a projecting lip, U-shaped cut-
ters secured to the spindle, said lips conform-
ing to the outer circumference of the cutter. 75
2. In a wood-boring machine, the combina-
tion with a hollow auger - spindle, a cylin-
drical cutter-head secured on the end thereof,
said cutter-head consisting of two parts each
provided with a projecting lip, cutters se- 8o
cured to the spindle, said lips conforming to
the outer circumference of the cutters, of a
car acting in conjunction with the cutter and
carrying adjustable clamping means, and a
guiding-ring carried by the car and adapted .85
to embrace the cutter.
3. In a wood-boring machine, the combina-
tion with a car carrying clamping means and
means for moving the car, of a hollow auger-
spindle, a cylindrical cutter-head secured on 90
the end thereof, said cutter-head consisting
of two parts each provided with a projecting
lip, U-shaped cutters secured to the spindle,
said lips conforming to the outer circumfer-
ence of the cutter, and a guiding-ring mount- 95
ed on the car adapted to embrace the cutter.
In testimony whereof we affix our signa-
tures in presence of two witnesses.
HUNLEY BIBLE.
LEE A. ROBINSON.
Witnesses:
J. P. GEREN,
J. P. DEDERICK.24
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Bible, Hunley & Robinson, Lee A. Wood-Boring Machine., patent, March 13, 1906; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth513009/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.