Wood-Boring Machine. Page: 2 of 3
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UNITED STATESPATENT OFFICE.
HUNLEY BIBLE AND LEE A. ROBINSON, OF SHERMAN; TEXAS:
WOOD-BORING MACHiNE.No. 815,256.
To dU whon it may concern:
Be it known that we, HiNLEY BBLE and
LEE A. RoBiisoN, citizens of the United
States, residing at Sherman, in the county of
5 Grayson and State of Txas, have invented
certain new and useful Improvements in
Wood-Boring Machines, of which the-follow
ing is a specification.
Our invention relates to ipiovementsin
w wood-boring nichines, and has spe6il ref-
erence to a dvice of this class which is ese-
cillyadaped tobreholes of etrfeiielength
in coluns or like stuctural members by
cutting away only a potin of the wood
i5 forming hole in sa-me.
Among numerous objects attained by this
invention and readily understood from the
following specification and accompanying
drawings, included is a part thereof, is the
20 pioduiction of a simple and inexpensive bor-
ing ipparatus embodying essential features
of adaptability, utility, and generalefficiency
which render the apparatus rapid and posi-
tive in action, insures free delivery of the bor-
25 ings from the bore-hlole, and renders it prac-
ticable to form holes of etreme length and
size in colums, beams,or like structural mein-
bers.
To these ends the present invention con-
30 sists in the combination aid arrangement of
pats, as will be heeinafter more fully de-
scribed, sliownin theacolipanying drawings,
and particularly pointed out in.the appended
claims, it beig understood that changes in
35 form, proportion, size, and minor details may
be made within tle sdope of the appended
clainis without departing from the spirit or
sacrificing any of the advantages of the inven-
tion.
40 Inthe drawings, Figure 1 is a side elevation
of our improved wood-boring machine shown
with the center portion of the spindle, frame,
car, and other parts broken away. Fig. 2
represents a top plan view of the srie. Fig.
45 3 is a vertical transverse view on the line
X X, Fig. 2. Fig. 4 is an enlarged' view in
perspective of the boring-head employed and
- manner of attaching same to. boring-tube,
and Fig. 5 is an enlarged view of the device
50 employed for opening and closing the clamps
that holdthe piece to-be bored.
The framework of our improved wood-bor-
ing machine consists of the horizontally-dis-
posed sills A, which rest firmly upon a suit-
55 able foundation. They are joined together
at their front ends by the bracket B and other-Patented iViarh. 13, 1906.
wise secured by suitable through-bolts. To
the top side of these sills are firmly bolted the
tracks C and C', upon which travels a timber-
carrying car D, that comprises a bed composed 60
of horizontally-disposed timbers secured par-
allel to each other by the transversely-dis-
posed bases of head-blocks E, attached by
bolts F adjacent their ends. The bed thus-
formed rests upon axles G,that turn inboxes 65
H, and at the end of each ale are secured
metal wheels I and I', the wheel I' being
grooved to fit the inverted V, formed cen-
trally on thetop side of track C' and by which
the car is retained on the track. 70
The car thus constructed is about one-half
the length of sills A, admitting of the car
traveling forward or back about its length.
The head-blocks consist of a bed or base E,in-
ternally grooved their entire length, as at J, 75
into each of which are slidably fitted two
clamps K, that are notched, as shown at K',
enabling them to -secuely but removably
hold either round or square timber in position
while being bored. Each of- the clamps K is 8o
provided on the bottom' side near its. outer
end with a downwardly-pi'ojecting lugL, that
carries a pin a. - Passing through each head-
block and extending from one to the other
is a shaft b, on which are rigidly mounted 85
sleeves'.M, that extend within the inner sid
wall of the base of each head - block and
carry disks N, provided at opposite sides ad
near the periphery with projcting pins Q. To
each of these pins is pivoted a rod P, that Xe- 90
tends from the pin 0 to pins a. Sockets are
formedon radial arms Q, projecting from
the ends of sleeves M, i whih are secured
the hand-levers R.. By forcing these levers
down the clamps K are drawn together against 95
the piece of round or square timber to be
bored, and by forcing 'them upward the
clamps are moved apart, thus .releasing the
finished piece. Each:handle is provided with
a suitable fastening S, engaging segment T 1.oo
for retaining the handle and clamps K in any
desired position.
The boring mechanism consists of a spin-
dle or tube V somewhat smaller and longer
than the hole to be bored. This spindle is 105
formed tubular to afford a way inwardly and
longitudinally thereof for the, passage or the
core not removed by the cutting-head, and it
is rotatably mounted in a horizontal position
on the bed or sills A and is driven by means ho
of a drive-pulley W, which is fixedly mounted
at the end of same and rotatably supportedSpecification of Letters Patent.
ApplNcation fi1ed Augnst 12, 1905; Serial No. 273,954.
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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/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.