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Патент USA US3089559

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MB)’ 14, 1963
D. ROBBINS
3,089,549
DRILLING APPARATUS
Filed March 5, 1960
4 Sheets-Sheet 1
03x’ INVENTOR.
of)
Davis Robb/n:
BY
WW M fWm
Rttorneys
May 14, 1963
D. ROBBINS
3,089,549
DRILLING APPARATUS
Filed March 3, 1960
4 Sheets-Sheet 2
H
m
‘O
IN VEN TOR.
BY oavjs RDAAM
Attorneys
May‘ 14, 1963
D. ROBBINS
3,089,549
DRILLING APPARATUS
Filed March 3, 1960
4 Sheets-Sheet 5
53
Davls Roblnns
M/MY‘M
Rttorneys
May 14, 1963
D. ROBBINS
3,089,549
DRILLING APPARATUS
Filed March 3, 1960
<
j 1g "'
5
4 Sheets-Sheet 4
INVENTOR.
Davis RObbH’LS
@Mfh
Httorneys
United States Patent 0
1P
we
1
3,089,549
DRILLING APPARATUS
Davis Robbins, Oneonta, Ala.
(R0. Box 2664, Birmingham 2, Ala.)
Filed Mar. 3, 1960, Ser. No. 12,632
3,089,549
Patented May 14,, 1963
2
each frame 19. By providing the ?uid pressure operated
means adjacent the front and rear of the frames 19, the
frames may be moved to selected elevations or moved to
selected inclinations relative to the horizontal.
Extending longitudinally of each horizontal frame 19
This invention relates to drilling apparatus and more
is an upper pair of rails or guideways 26 and a lower
pair of rails or guideways 27, (as clearly shown in FIG.
2. The guideways 26 and 27 extend the length of the
particularly to means for drilling holes into the side of
frame 19 and the upper guideways 26 support ?anged
1 Claim. (Cl. 175-85)
a mass of earth and is an improvement over the drilling 10 rollers 28 which are carried by a carriage 29. Mounted
apparatus described and claimed in my prior Patents Nos.
on the carriage 29 in position to engage the under sur
2,781,185 ‘and 2,849,212, and entitled “Drilling Appa
ratus.”
An object of my invention is to provide drilling appa
face of the guidewlays 27 are ?anged rollers 31. By pro
viding the ?anged rollers 28 which engage the upper sur
face of the guideways 26 “and the ?anged rollers 31 which
ratus which shall embody a horizontal frame including a 15 engage the under surface of the guideways 27, the carri
carriage adapted for horizontal movement within said
age 29 is held against vertical movement relative to
the guideW-ays and at the same time is adapted for free
frame and carrying a drive shaft which is detachably con
longitudinal movement along the guideways.
nected to drill rod section-s, together with improved means
for moving the drill rod section into position to be at
Mounted on the carriage 29 is a prime mover, such
tached to the drive shaft.
20 as an electric motor 32 which is operatively connected
Another object of my invention is to provide drilling
to a transmission 33 for rotating a hollow driving head
apparatus of the character designated which shall in
or shaft 34. The motor 32, the transmission 33, and the
clude improved means for moving a discharge housing
drive shaft 34 are all carried by the carriage 29 whereby
they are adapted for longitudinal movement along the
toward and away from the hole being bored whereby the
cuttings and debris forced out of the hole being bored 25 guideways 26 ‘and 27.
pass into the discharge housing.
Connected to the carriage '29 are forwardly extending
drive chains 36 and rearwardly extending drive chains
A still further object of my invention is to provide
37 which pass over terminal sprockets 38 and 39 and a
drilling ‘apparatus of the character designated which shall
pair of intermediate sprockets 41. As shown- in FIG. 1,
be simple of construction \and manufacture and one which
is adapted for drilling holes into the side of a mass of 30 the intermediate sprockets 41 ‘are operatively connected
to the piston rod of a ?uid pressure operated cylinder
earth at selected elevations ‘and at selected inclinations.
42 whereby the sprockets 41 are moved longitudinally
Apparatus embodying features of my invention is il
of the frame 19 to in turn move the carriage 29 longi
lustrated in the accompanying drawings, forming a part
of this application, in which:
tudinally of the frame. The sprocket drive for the car
FIG. 1 is a side elevational view, partly broken ‘away 35 riage is substantially the same as that shown and de
scribed in my Patent No. 2,849,212, dated August 26,
and in section;
1958, and entitled “Drilling Apparatus.” Since my pres
‘FIG. 2 is an enlarged, sectional view taken ‘generally
‘along the line 2—2 of FIG. -1, certain parts including the ~
means for reciprocating the carriage being omitted for
40
the sake of clarity;
FIG. 3 is a front elevational view;
FIG. 4 is an enlarged fragmental view showing the ex
tensible means for adjusting the position of the discharge
housing relative to the hole being drilled; and
FIG. 5 is a diagrammatic view showing the relative
positions of the drill rod sections :as they ‘are added and
removed.
Referring now to the drawings for la better understand
ent invention is not directed to the speci?c means for re
ciprocating the carriage 29 relative to the frame 19, no
further description of the chain drive is deemed necessary.
The drive shaft 34 is provided with 1a threaded male
coupling 43 which is adapted to engage the threaded
female coupling of a drill rod section 44, as shown in
FIGURES 1 ‘and 5. As shown in FIG. 2, the drill rod
section 44 is hollow for conveying air therethrough to
clear the hole being drilled of cuttings. Mounted on the
end of the drill rod section 44 opposite the drive shaft
34- is a drill bit 46.
ing of my invention, 1 show a translatable support unit
10 for supporting a frame ‘1:1. As shown in FIG. 6, the
Air under pressure is supplied to the hollow drill rod
section 44 by a suitable flexible conduit 47 which is op
frame 11 is mounted for pivotal movement in a horizontal
eratively connected to the hollow drive shaft 34 in a
manner well understood in the art for supplying air to
a hollow rotary member. The conduit 47 also carries
plane relative to the translatable support unit 10. That
is, the frame 11 carries suitable support rollers 12 which
ride in an annular trackway 13 carried by the support unit
electrical leads for supplying electrical power for the
10. The frame 11 is rotated relative to the translatable 55 motor 32. Electrical power may be supplied to the ap
paratus by va suitable electrical conduit 50 which is sup
support unit 10 by suitable means ‘and in a manner well
understood in the art.
ported by ‘a boom 505* at the rear of the ‘apparatus, as
shown in FIG. 1. As shown in FIG. 1, the ?exible con
Pivotally connected to the forward end of the frame :11
duit 47 is carried ‘by a suitable reel 48 mounted for rota
by suitable pivot pins 14 :are ?uid pressure operated cylin
tion on support brackets ‘49 carried adjacent the rear end
ders 16 having depending piston rods 17. The lower ends
of each frame 19. Accordingly, as the carriage 29 is
of the piston rods ‘17 are pivotally connected by suitable
pivot pins 18 to the forward portion of horizontal frame
moved forwardly ‘along the trackways 26 land 27, the
flexible conduit 47 is unwound from the reel 48. Suit
members 19 which are mounted at opposite sides of the
frame 11, as clearly shown in FIG. 3. Pivotally con 65 able means is provided for rotating the reel 48 in the
opposite direction when the carriage 29 is moved toward
nected to the rear portion of the frame 11 by suitable
the rear of the frame ‘19, whereby the ?exible conduit
pivot pins 21 are fluid pressure operated cylinders 22
47 is wound about the reel.
which carry depending piston rods 23. The lower’ends
Mounted at the forward end of the frame 19 and extend
of the piston rods are pivotally connected by suitable
ing forwardly thereof is ‘a pair of laterally spaced ?uid
pivot pins 24 to the rear portion of the frames 19. Prefer 70 pressure operated cylinders 51 having forwardly extend
ably, I provide four ?uid pressure cylinders 22 and their
ing piston rods 52. Mounted on each piston rod 52,
associated piston rods 23, there being one on each side of
as shown in FIG. 4, is a discharge housing indicated
3,089,549
3
generally at 53 which is disposed to surround the upper
portion of the drill rod section 44, as shown in FIG. 3,
whereby the cuttings and debris forced out of the hole be
ing drilled are not discharged into the atmosphere. Prefer
ably, means, not shown, is provided ‘for transferring the
cuttings and debris to a suitable discharge point. Secured
to the rear portion of the discharge housing 53 is a rear
wardly extending shield member 54 which surrounds the
4
proved apparatus will be readily understood. The hori
zontal frames 19 are positioned at the proper elevation or
inclination by actuating the ?uid pressure operated cylind
ers 16 and 22 at the forward and rear ends of the ap
paratus. With the drill rod section 44 connected to the
drive shaft 34, the motor 32 is energized whereby the
drill bit 46 rotates. The ?uid pressure operated cylinder
42 is then actuated to cause the entire carriage 29, includ
upper portion of the piston rod 52 whereby foreign
ing the ‘motor 32 and the transmission to move forward
housing is moved forwardly. By providing the ?uid
pressure operated cylinder 51 and the piston rod 52, the
discharge housing 53 may be moved axially of the drill
rod section whereby the forward portion of the discharge
into the side of a mass of earth indicated at E in FIG. 5.
While I have described the drill as entering a mass of
materials do not fall onto the piston rod as the discharge 10 along the guideways 26 and 27, thus drilling an opening
housing 53 is in contact with the mass of earth into which
the drill enters. Preferably, the forward portion of the
discharge housing ‘53 is in the form of a resilient member
55, such as rubber or the like.
Mounted for rotation in suitable bearings 56 carried
by each side of each frame 19 is an elongated member 57.
Secured to each elongated member 57 is a downwardly and
inwardly extending operating arm or saddle 58, as shown
in FIG. 2. The saddle 58 projects upwardly above the
elongated member ‘57 and the upper end thereof is pivot
ally connected by a suitable pivot pin 59 to a ?uid pressure
operated cylinder 61, whereby the saddle unit is rotated in
the bearings 56. Outward movement of each saddle 58
is limited by an adjustable stop member 62 carried by the
upwardly projecting portion of the saddle member in posi
earth, it is contemplated that the term earth shall include
dirt, rock, ore, coal and any similar material into which
openings are drilled.
After the drill rod section 44 has entered the mass of
earth, the cylinder 77 is actuated whereby the break pin 78
enters the opening ‘67 to restrain rotation of the drill
rod section 44. The drive shaft 34 is then rotated in a
direction whereby the drive shaft is unscrewed from the
drill section 44. The carriage 29, together with the drive
shaft 34 is then moved to the rear of the frame 19. The
?uid pressure operated cylinders 61 and 72 are then
actuated whereby the saddles 58 and 71 swing the sub
jacent drill rod section 44a into position between the
drive shaft 34 and the drill rod section 44. The male con
nection 43 of the drive shaft is then rotated and moved
into threaded engagement with the adjacent female end
of the drill rod section 448. The drill rod section 44“ is
tion to engage a stationary part of the ‘frame 19. Inward 30 held against rotation while the male end 43 is rotated due
to the fact that the pin 66 enters the opening 678 in the
movement of each saddle 58 is limited by an adjustable
adjacent end of the drill rod section 443.
stop member 63 carried on the inner surface of each sad
After the drive shaft 34 is connected to the drill section
dle in position to engage the bottom of the frame 19'. A
443, the saddles 58 are swung downwardly whereby the
recess or groove 64 is provided in the inner surface of each
break pins 66 are removed from the openings 67a and the
saddle 58 for receiving other drill rod sections 44a which
rear end of the drill rod section 449' is thus supported by
are disposed to be interposed between the drill rod section
the drive shaft 34. The male and 43a of the drill rod
44 and the drive shaft 34.
section 444 is then moved into the adjacent female end of
Projecting upwardly within the groove 64 provided in
the drill rod section 44 and the drive shaft 34 is rotated
each saddle 58 is a break pin 66 which is adapted to pro
ject upwardly within openings ‘67 and 67a carried by the 40 whereby the drill rod section 448 is connected to the drill
rod section 44. The drive shaft 34 is continued to
drill rod sections 44 and 448, respectively, as the case may
rotate until the drill rod section 44“ enters the earth E.
be. That is, when it is desired to unscrew the drive shaft
The other drill rod section 44B is then added if it is
34 from the adjacent female end of the drill rod section,
desired to drill an opening having a length greater than two
the saddle 58 is moved upwardly whereby the break pin
drill rod sections. While I have shown only two drill rod
66 enters the opening ‘67 or 67a to prevent rotation of the
sections 448. as being carried by the saddle members, it will
drill rod section while the drive shaft is rotated in a
be apparent that a plurality of such drill rod sections may
direction to unscrew the same from the drill rod section.
be employed.
Mounted for rotation adjacent the forward end of each
To return the drill rod section 44a to the saddles, the
frame 19 in suitable ‘bearings 68 carried by opposite sides
of each frame 19 is an elongated rotary member 69. 50 carriage 29 is moved toward the rear of the frame 19
whereby the drill rod section 44a is removed from the
Secured to each elongated member 69 is an operating arm
earth E as shown in FIG. 5. The saddles 71 are then
or saddle 71 having an upwardly projecting end pivotally
swung up into engagement with the under surface of the
connected to a ?uid pressure operated cylinder 72 whereby
drill rod section 44B and the cylinder 77 is actuated where
the saddle unit is rotated in the bearings 68. The saddles
by the pin 78 enters the opening 67 to prevent rotation
71 are identical in construction to the saddles ‘58, with
of drill rod section 44. The drive shaft 34 is then driven
the exception that the break pins 66 are not provided on
in
a direction to unscrew the male connection 43a from
the saddles 71. That is, the saddle 71 is provided with
the female connection of the drill rod section 44. It will
the recessed portions ‘64 for receiving the forward ends of
be noted that the threaded connection between the male
the drill rod sections 44a but is not provided with break
coupling 43 and the female coupling of the rod section
pins 66.
44a may be made tighter than the threaded connection
Mounted adjacent opposite sides of the frame 11 are
between the male coupling 433 and the female coupling
vertically extending guideways 73, as shown in FIG. 3.
of the rod section 44, due to the fact that the break pins
Mounted on each of the frames 19 is an inwardly extend
66 are inserted in the openings 673 while the joint is
ing support member 74 which carries a ?anged roller 76
made between the male coupling 43 and the adjacent
adjacent the inner end thereof disposed to engage the
female end of the rod section 44*‘. Accordingly, the con
guideways 73 to thereby provide a surface against which
the frames 19 may exert a force against and at the same
time permit free vertical adjustment of the frames 19 to
selected elevations or inclinations.
Mounted adjacent the forward end of each frame 19 is a
?uid pressure operated cylinder 77 which carries a break
pin 78 that is adapted to enter an opening 67 or 67*‘, as
the case may be, to restrain rotation of the drill rod sec
tion.
From the foregoing description, the operation of my im
nection between members 4?:a and 44 will be broken or
unscrewed before the release of the threaded connection
between the members 43 and 44a. The drill rod section
443 is then separated from the drill rod section 44 by
moving the carriage 29, together with the drive shaft 34
toward the rear of the frame.
The saddles 58 are then
raised into position with the break pin 66 entering the
openings 67“ in the drill rod section 44“. The drive
shaft .34 is then rotated whereby the drive shaft is scp
3,089,549
6
arated from the drill rod section 44%. After separating
the drive shaft 34 from the drill rod section 44?, the sad
dies 58 and 71 are lowered to the position shown in
FIGS. 2 and 3. The carriage 29, together with the drive
shaft 4 is then moved toward the forward end of the
frame whereby the drive shaft is moved into threaded
engagement with the drill rod section 44. The break pin
78 is then removed from opening 67 and the drill rod
section 44 is withdrawn from the opening which is drilled
into the side of the earth.
10
From the foregoing, it will ‘be seen that l have devised
an improved apparatus for drilling holes into the side of
a mass of earth.
By providing a carriage which is adapted
for reciprocation within a horizontal frame, together with
extensible means for supplying power to the prime mover
which rotates the drive shaft and extensible means for
supplying air under pressure to the interior of the hollow
drill rods whereby the debris and cuttings are forced
(f) extensible means carried by said frame and oper
atively connected to said drive means for supplying
power thereto,
(g) a hollow drill rod section,
(It) means detachably connecting one end of said drill
rod section to said drive shaft,
(i) a hollow drill bit connected to the other end of said
drill rod section,
(j) extensible means carried by said frame and opera
tively connected to said hollow drill rod section for
supplying air to said hollow drill rod section to clean
the hole being bored of cuttings,
(k) a longitudinally adjustable discharge housing car
ried by said frame for said cuttings having a re
silient portion surrounding at least a portion of the
drill rod section in position to be adjacent and out
wardly of the mass of earth into which the hole is
being bored,
outwardly of the hole being bored, my improved appa
(I) inwardly extending support arms mounted on said
frame for pivotal movement in generally vertical
planes adjacent ‘each end of said frame in position to
extend inwardly beneath said drill rod section for
supporting at "least one other drill rod section,
ratus is adapted for continuous drilling operation until a
drill rod section is moved its entire length into the earth.
By providing the saddle members which readily position
the drill rod sections between the drive shaft and the drill
rod section already within the con?nes of the earth, the
( m) an upwardly projecting pin carried by the support
arm nearest the drive shaft,
(12) there being a recess in the end of each drill rod sec
drill rod sections are added or removed in a minimum
of time and with a minimum of effort. Also, by provid—
ing an extensible discharge housing adjacent the forward
end of the frame which encircles the portion of the drill
rod section at the point of entry into the earth, the cut
tion adjacent said pin for receiving said pin whereby
rotation of the drill rod section is restrained While
said pin is in the recess,
tings and debris are not discharged into the atmosphere but are disposed of in a controlled manner. Furthermore,
by providing a shield member which moves with the dis
charge housing and extends over the piston rod of the ex
tensible section of the discharge housing, foreign mate
rials do not enter this area and damage the piston rod
(0) there being upwardly opening recesses adjacent the
inner ends of said arms for receiving said drill rod
sections, and
(p) power operated means carried by said frame and
operatively connected to said arms for moving said
arms about their pivot points whereby said other drill
rod section is moved selectively in a vertical direction
into and out of position between said drive shaft and
the ?rst mentioned drill rod section.
and the ?uid pressure operated cylinder.
While I have shown my invention in but one form, it
will be obvious to those skilled in the art that it is not
so limited, but is susceptible of various changes and mod
i?cations without departing from the spirit thereof, and I
desire, therefore, that only such limitations shall be placed
40
thereupon as are speci?cally set forth in the appended
claim.
What I claim is:
Apparatus for drilling holes into the side of a mass of 45
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,285,712
1,932,068
2,107,552
2,149,348
Hughes ______________ __ Nov. 26,
Englebright et al _______ __ Oct. ‘24,
Smith ______________ __. Feb. 8,
Kelly ________________ __ Mar. 7,
2,730,332
2,771,271
2,781,185
2,823,898
2,849,212
Lawson ______________ __ Nov. 21,
Robbins ____________ __ Feb. 12,
Bankston ____________ __ Feb. 18,
Robbins ____________ __ Aug. 26,
(d) a drive shaft carried by said carriage,
2,868,508
Cowan _____________ _‘__ Jan. 13, 1959
(e) power operated drive means mounted on said car
2,879,034
2,913,226
Cowan ______________ __ Mar. 24, 1959
Pritchard et al _________ __ Nov. 17, 1959
earth comprising
\(a) a generally horizontal translatable frame,
([1) parallel guideways mounted on said frame and ex
tending longitudinally thereof,
(0) a carriage mounted for longitudinal movement 50
along said guideways,
riage to rotate said drive shaft,
1918
1933
1938
1939
Hale ________________ __- Jan. 10, 1956
1956
1957
1958
1958
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