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Патент USA US2410458

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NOi‘IV.. 5,
`
A
PAGET
`
DRILLING APPARATUS
M591.
Nov. 5, 1946.
W, W. PAGET '
.z'AwAss
DRILLING APPARATUS
Filed Jan. 9, 1945
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Nov. 5, 1946,
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W. w. PAGET
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2,410,453
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DRILLING APPARATUS
Filed Jan, 9, 1945
47
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2,410,458
Patented Nov. 5j, 1946
UniTED STATES PATENTA OFFICE
2,410,458
DRILLING APPARATUS
Win W. Paget, Michigan City, Ind., assignor to
Joy Manufacturing Company, a corporation of
Pennsylvania
Application Ilanuary 9, 1945, Serial No. 571,985
8 Claims. (Cl. Z55-_45)
2
My invention relates to drilling apparatus, and
more particularly to control means for drilling
apparatus vof the rotary type.
_
vAn object of my invention is to provide an
improved drilling apparatus. Another object is
to provide a drilling vapparatus having improved
control means. Still another object is to provide
a drilling apparatus having control means ar
ranged in an improved manner whereby ready >ac
cess may be »had for repair or replacement» of
parts.
Yet another object is to provide for a
drilling apparatus of the rotary type, improved
means for controlling drill feed in response to the
torque on the drill rotating means. These and
Fig. 15 is a fragmentary cross-sectional View
ltaken on the plane of the line .i5-l5 of Fig. 14.
Fig. 16 is a cross-sectional View taken on the
plane of the line lô-lß of Fig. 3.
In the illustrative embodiment of my invention
there is shown a drilling apparatus comprising bit
rotating means, generally designated I, support
ing and guiding means, generally designated 2,
and bit feeding means, generally designated 3.
rï‘he bit rotating meansv »l comprises a rotary
motor 4, herein a high speed electric motor hav
ing a motor casing A.-'i containing a rotor E keyed
to a shaft ‘i journaled in ball bearings 8 suitably
supported within the motor casing. Carried by
15 the motor shaft l is a chuck 9 for receiving the
shank of a tubular shaped drill rod ill, the latter
in turn carrying a drill bit Il. The motor is
There is shown in the accompanying drawings
provided with a rear head I3 which has a rear
one form which my kinvention may assume in
other objects will appearmore fully in the fol
lowing description.
ward cylindric projection hl mounted for limited
practice.
In these drawings:
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20 rotation in ball bearings i5 supported within a
bore formed in a supporting member it. The
bearings are retained in the bore in the support
ing member by means of a retaining ring i3 se
therein.
Fig. 2 is an enlarged longitudinal sectional View . cured, as by screws I9, to the supporting member,
ofthe Supporting and feeding means for the 25 and the cylindric projection is held against axial
Fig. 1 is a side elevational View `of a drilling
apparatus having -my improvements incorporated
drilling apparatus shown in Fig. l.
displacement with respect to the bearings by
Fig. 3 is an enlarged longitudinal sectional View
showing the control means, and portions of jthe
drill rotating means and supporting and feeding
means of an end plate 20 secured, as by screws
2l, to the projection I4. A dirt seal 22 is ar
means therefor.
ranged within the supporting member and en
30 gages the exterior periphery of the end plate 253.
A cylindric portion 24 is formed on the end plate
Fig. 4 is an enlarged sectional view showing the
and fits the bore in the cylindric projection lli
controls for the drill rotating means, and taken
of the rear motor head to prevent leakage »be
on the plane of the line ll-Ll of Fig. 1G.
tween >the parts. The purpose of the rotary
Fig. 5 is a fragmentary sectional View taken
mounting for the motor will be later explained.on the plane of the line 5-5 of Fig. 3.
The feeding means is of the fluid actuated type
Fig. 6 is a horizontal sectional view taken onand comprises a feed cylinder 26 containing a
the plane of the line 6-6 of Fig. 3.
reciprocable feed piston 2l having a hollow piston
Fig. '7 is a cross-sectional view taken substan
rod 2S extending forwardly through a front cyl
tially on the planes of the line ‘l-l of Fig. 3.
Fig. 8 is a sectional view taken on the plane 40 inder head 29 and connected, as `by Welding at
30, to a plate .3l which is connected to the sup
of the line 8_8 of Fig. '7.
porting member i6. The feed piston comprises
Fig. 9 is a >fragmentary sectional view taken
an inner member k3&2 having a flanged »plate 33
on the planes of the line 9_9 of Fig. 13.
secured, as by screws, to the »rear end thereof.
Fig. 10 is a side elevational View with >parts
An annulus 34 is seated against a shoulder at
broken away to show >the forward feed passages
the forward end of the inner member 32, .and
and control `means for the drilling apparatus.
an -annulus 35 has a reduced portion abutting the
Fig. 11 is a fragmentary sectional View vtaken
flanged plate 33 and providing a space for re
on the plane ofthe line ll-H of Fig. ß.
ceiving a bushing 36. Arranged between the an
Fig. 12 is a fragmentary .sectional view taken
nuli 34 and 35 are sealing rings 31 engaging the
Von the plane of the line l2-l2 of Fig. '7.
inner walls of the feed cylinder. Arranged within
Fig. A13 isa sectional view taken >on the Aplanes
the feed cylinder between its ends is an annular
of the line I3'-I3 of Fig. 9.
plate 38 which is engageable by the piston 2l
“ Fig. 14 is a sectional view showing the control
for limiting forward movement of .the latter.
means and passages for supplying cleansing liquid
Surrounding the ¿piston rod is a sealing ring 39
, y.to the drill bit.
amd-15s
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which is held by a spring 40 in sealing engage
ment with the piston rod and a collar 4| so as to
prevent any escape of pressure fluid from the
feed cylinder at the forward side of the feed
piston. Attached to the rear end of the- feed
cylinder is a head 42 having a handle 43 by
means of which the position of the drill may be
changed.
The drill supporting and guiding means 2 com
prises a trunnion member 44 having a swivel
plate 45 adapted to be clamped in the saddle
mounting of a mine column or any other suit
able suppcrt. The trunnion member has a lon
gitudinally extending bore 46 receiving a cylin
bore 18 is an enlarged bore 90 intoV which the
valve sleeve opens, and the bore 99 communicates,
as shown in Fig. 3, with a discharge passage 9|.
At the inner end of the bore 18 is a discharge
chamber 92 into 'which the inner end of the sleeve
19 opens, and the chamber 92 is connected by a
bore 93 and ports 93' in the valve member 86 with
points at the interior of the sleeve 19 communi
eating continuously with the discharge passage
9|. When the valve member 86 is in the position
shown in Figs. 3 and 6 liquid is supplied from the
groove 11 through the ports 80, the annular space
89, and the ports 85 to the groove 83, and the
groove 82 is connected to discharge through the
dric tube 41 which is fixed in depending portions 15 ports 84, the valve sleeve 19, the bore 98, and the
discharge passageäSl. The valve member is mov
48 and 49 of a support member 50. The tube 41
able outwardly from the above position to con~
extends rearwardly from the member 50 and has
port member 50 has alined bores 53 and 54 re
nect the grooves 11 and 82 in communication with
each other through the space 89, and to connect
the groove 83 in communication with the dis
ceiving the feed cylinder 26 and supporting the
charge chamber 92.
its rear end ûxed in a recess formed in a depend
ing portion 5| of the cylinder head 42. The 'sup
For adjusting the position of the valve member
latter in a position with its axis parallel to the
8B there is provided an element 94 threaded into
axis of the tube 41. The tube 41 is swivelly
the bore 90 and having a bore 95 slidably re
mounted in the bore 55 of the trunnion member
ceiving a stern 96 formed on the valve member.
44 so that the drilling apparatus may be swung
25 Rotatably supported on the element 94 is a col
to opposite sides of the support, and a plunger
lar 91 having an internal helical groove 98, and
lock 56 is receivable in a locking aperture E1
a pin |00 carried by the valve member has its
formed in the trunnion member 44 for locking the
end portions extending through slots |0| in Kthe
support member 50 in its upright position. This
plunger lockis guided within bores formed in 30 element 94 and projecting into the groove 98.
the depending portion 48 of the support member,
When the collar 91 is rotated relative to the ele
and a coil spring 58 constantly urges the plunger
ment 94, the ends of the pin |00 will follow in the
lock toward its innermost locking position. A
groove 98 and cause the valve member 86 to be
handle 59 is secured to the plunger lock whereby
moved longitudinally of the valve sleeve.
the locking portion thereof may be manually re 35 Forward feed of the drilling apparatus is ob
leased from the locking aperture against the ten
tained by supplying liquid under pressure to the
sion of the coil spring 58. Connected to the plate
rearward end of the feed piston 21 from the
3| carried by the supporting member I9 is a tu
bular member 60 which is slidably receivable in
the tube 41 for holding the supporting member
against rotation relative to the feed cylinder.
Arranged at the lower side of the supporting
member E8 are contro-l means, generally desig
nated G5, for controlling the iiow of fluid under1
pressure to the feed piston 21, for controlling the
floW of cleansing liquid to the drill bit ||, and
for controlling the supply of electric current to
groove 82. As shown in Fig. l0, the groove 82 is
connected by a passage l 04 to a bore |05 contain
ing a torque controlled valve means, generally
designated |06, which controls the flow of liquid
from the passage |04 to a passage |08 opening
through the control block 66 into a passage |09
formed in the supporting member i8. The pas
sage |08 is connected by a passage I |8 in the plate
3| to a tubular member | I2 which extends axially
through the piston rod 28 and 4the feed piston
into communication with the feed cylinder at
trol block 86 connected, as by bolts, to the sup
.the rearward side of the feed piston. The space
porting member | B. Formed in the control block, 50 in the feed cylinder at the forward side of the
as shown in Figs. 3 and '1, is a chamber 68 to
feed piston is connected by ports H4 to .the space
which liquid is supplied under pressure from a
||5 at the interior of the piston rod, and the
supply conduit 69. The liquid passes through a
space H5 is connected, as shown in Fig. 3, in
ñlter 10 in the chamber 68 and is conducted to
communication with a passage ||6 opening
a passage 1| which extends through the control
through the plate 3| into a passage ||1 extend
55
block to a valve chamber 12 containing a valve
ing .through the supporting member |6 to a pas
member 13. An operating handle 14 is provided,
sage | |8 formed in the control block 66 and open
as shown in Fig. 6, for positioning the valve mem
ing into the groove 83.
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ber 13 to control the ilow of liquid from the pas
When the valve member 86 is in the position
sage 1| to a passage 18 which opens into an an
connecting the grooves 82 and 83, respectively,
nular groove 11 surrounding a bore 18 formed 60 in communication with the supply groove 'l1 and
in the control block and opening through the for
discharge chamber 92, liquid will be supplied to
ward side of the latter. Received within the bore
the groove 82 and will ilow from the latter
18 is a valve sleeve 19 to the interior of which
through the passage |04, past the torque con
liquid is supplied from the groove 11 through ports
the motor Il. This control means comprises a con
88. Formed in the walls of the bore 18 at oppo
site sides of the groove 11 are annular grooves
82 and 83 which communicate with the interior
trolled valve |06, through the passages |08, |09
and ||0, and through the tubular member ||2 to
member, the groove 11 in communication with
forward feed of the drilling apparatus.: When
the feed cylinder at the rear side of the reed pis
ton. The space in Ithe feed cylinderv at` the for
of the sleeve 19 through ports 84 and 85. Slid
ward side of the feed piston will be vented at
ably contained within the sleeve 19 is a valve
member 86 having enlarged .portions 81 and 88 70 the same time through theports `| I4, the space
H5, the passages H6, ||1 and H8, the groove 83,
engaging the walls of the sleeve and providing
and the discharge chamber. 92.` „ The liquid .act
between them an annular space 89 which is adapt
-ing on the rear side of the'feed piston will cause
. ed to connect, in different positions of the valve
the grooves 82 and 83. At the outer end of the 75 the valve member 86 is in the position shown‘in
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member |24 toward its closed position against the
respectively, in communication with the bore 90
and the supply groov'e 11. Liquid will besupplied
at this time to the groove=83 and will ilow through
passages H8, ||1 and H6, space H5, and ports rá
||4 to the feed cylinder at the forward side of
the feed piston. The space in the feed cylinder
action of the `springY |4|. The suppl-y» ofiiiuidfor
effectingforward feed lwill then be reduced or ïcut
completely off, slowing down or stopping forward
feed.
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`In order to supply a cleansingïliquid to-'fthe
drill hole for removing cuttings, >there is `pro"
vided, as shown in Figs. 6 and 14, a'lpassage'ïl‘äâ
vleading from the liquid supply groove 11 to -a boreA
at the rear side of the feed piston vwill be vented
at «the same time through the tubular -member
i |2, the passages I I0, |09 and |00, past the torque
controlled valve |00, through the passage |04, the
groove 82, the ports 84,'and the valve sleeve`10 ‘to
the bore 90 and the discharge passage 9|. The
|56 containing manually operated `valve' means
|51 which controls communication between the
passage |55 and a passage |60 opening through
the control block 66 »into a vpassage '|6If in .the
pressure of the liquid acting on the forward side
>of the feed piston causes a rearward `feed'of the
supporting member I6. The passage |6|fis;con«
nected in communication with a passage 2=î|62
drilling apparatus. The torque controlled valve
|00 comprises a valve sleeve |20 fitting tightly
within the bore |05, the latter‘extending trans
verselyïthrough the control block 66 adjacent its
6
tothe supporting member`|6 `and"~force.-the valve
3, vthe grooves 82 and 188 will be connected,
formed in a member |64 attached to-«the‘sup
porting member, and a tube ’|55 (Fig-.'39 Yhas'Íïits
' rear end threaded in-to the passage‘y |62 vandfex'
' forward side, and formed in the valve sleeve are 20 tends through an axial opening |66 in'themotor
stepped bores |2| and |22 slidably receiving, re
shaft 1 into communication with the vinterior
spectively, a valve member |24 -and its stem |25.
Surrounding the adjacent portions of the valve
of drill rod l0.
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The drill rotating lmotor is supplied withïe'lec
tric current through conductors |68 which pass
through an insulating sleeve |60 into aY cham*
ber |10 in the supporting member. The fccn
ductors |68 extend from the chamber |10 through
an insulating sleeve |12 to av chamber '|13 in
the control block 60, and, as shown in Fig. 4, a
member and its stem are spaces |21 and |28 com
municating with each other and providing a seat
|28 which is engageable by the valve member for
cutting off communication between the spaces.
The space |21 is connected, as shown in Fig. 13,
by a port |30 with a space |3| `formed byl slab
bing off a portion of the valve sleeve |20, and the 30 switch |14 in the chamber |13 controls the con
nection of the conductors to a 'power line,l >not
space |3| >communicates with the passage |08.
shown. The switch is provided with aV plunger
The space |28 is connected by a port |33 with a
|15 which abuts a diaphragml |16 `clamped be
space |34 formed by slabbing a portion of the »
tween a cylinderr member |11l and the control
valve sleeve as shown in Figs. 9 and 13. The
space|34 communicates with vthepassage |04. 35 block 66 and forming an end wall of thecham
ber |13. A plunger |18 is reciprocableinfabore
lSurrounding the valve stem are -sealing rings
|10 in the cylinder member andabuts the 'oppo
‘|35 -for preventing leakage of liquid from the
space |28 along the stem.- The opposite ends -of
the bore |05 are closed by plugs |31 and |38, the
plug |31 providing a recess receiving a plunger v40
|40 connected to the end of the valve stem. A
spring |4| acts between the plug |31» and the
plunger |40 for urging the valve member |24 away
from the seat |29. An enlargement .|42 on »the
-valve stem is -engageable with the valvesleeve |20l 45
'for'limiting the opening movement of the valve
member. The plug `|38 has a recess r|43 receiv
siteside of the diaphragm. 'FA plunger- |80 v"is‘ire
ciprocably contained in la bore y| 0| in the cylinder
member and has notches |82 -¿which are adapted
to receive the outer'end of -theplunger `|18ffo`r
position-ing the latter to `eifect an? lopeningr i or
closing of the switch |14. The plunger »1|8'0 ex
tends through open ends of the bore |81v so ythat
its position may be manually adjusted.
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As a result of my invention there is provided
a drilling apparatus having »improved 'control
means. By reason of the arrangement of'thë'c'on
trol means in a block which is connectedvt‘o the
and this recess is connected by a groove |44 in
the sleeve |20 to a passage |45 (Fig. 12) opening 50 supporting memberin the manner described, -a
ready access to the various controls is hadfor
into the bore 90 which communicates’with the
ing the outer portion> of the valve member |24,
discharge passage 9|. Any liquid leaking along
repair or replacement.
The >controls-are,A fur
thermore, conveniently locatedv for Iactuation by
the valve member to the recess |43 is conducted
the drill operator.
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`away to the discharge passage so that -it oíîers
no'o’pposition to the opening movements ofthe 55 While there is in fthis application specliñcally
described one form which the invention mayas
valve member. The torque controlled valve |00
sume in practice, it will be understood that 'this'
will be noted to be located -adjacent the periphery
form ofthe same is shown for-purposesofii‘llus
.of the motor casing; andthe enlargement |42 on
tration, and that the invention may bev modified
the valve stem forms with an enlargement |41 on
and embodied in various other forms without
the stem an annular groove |48 which receivesv
departing from its spirit or the scope ofthe ap
the end of a pin |40 carried by a blocks |50 at
pended claims.
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tached, as shown'inv Fig. 11, to the lowerside 'of
What I claim as new andrdesire lto'secure by
the periphery of the motor casing.
When the drilling apparatus is being fed in a
Letters Patent is:
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forward direction and the load on the drill rotat
1. A drilling apparatus comprising'in. combi
` nation, a drill rotating motor having ajcasing,
V ing motor is not excessive, lthe valve member |24
will be held by the spring |4| in its open position
means for mounting the casing of rsaid motor for
so that fluid supplied to the space |28 from the
oscillatory movement,v fluid actuated'. >feeding
forward feedpassage |04 may pass to the space
means for said motorjmeans inclu'dinga> valve
|21 from «which it is conducted to the forward- «
feed passage |08. The rear head of the drill ro
member arranged adjacent'the periphery òfsaid
tating motor will be held against rotation in the
bearing I5 by reason of the pin |40 ñtting in the
groove |48. If the torque on the motor becomes
pressure to said feeding means, and means in
cluding an element connected to said motor cas
ing at the periphery thereof and operatively en
motor for controlling the supply of. fluid under
excessive, the motor casing will rotate relative 75 gaging said valve member for positioning the lat
2,410,458
ter to regulate fluid supply in accordancewith
the load on the motor.
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ply of fluid to said feeding means and toa drill
rotated by said drill rotating motor, means> car
ried by the control block for controlling the sup
f Y'
2. A drilling apparatus comprising, in combina
tion, a drill rotating motor having a casing,
means for mounting the casing of said motor for
ply of operating medium to said drill rotating mo
tor, and means connected to said motor casing
`and operatively engaging one of said first men
tioned control means for regulating the ilow of
oscillatory movement, fluid actuated feeding
means for said motor, a control block detachably
connected to said mounting means and having a
valve bore adjacent the periphery of said motor
fluid in accordance with the load on said motor.
Y6. A drilling apparatus comprising, in combi
nation, a drill rotating motor having a casing,
means for mountingthe casing of said-motor for
casing, means including a valve member recipro- ‘
cable -in said valve bore for controlling the sup
ply of fluid under pressure to said feeding means,
and means including a pin connected to said mo
tor casing at the periphery thereof and opera
tively engaging said valve member for position
oscillatory movement,- fluid actuated feeding
means for said motor, means for supplying fluid
under pressure to lsaid feeding means, means
for supplying cleansing fluid to a drill rotated
ing the latter to regulate fluid supply »in accord
ance with the load on said ,-motor.
by said drill rotatingfmotor, means for supplying
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operating medium to the drill rotating motor, a
control block detachably connected to said mo
-tor mounting means, valve means for controlling
the supply of fluid to said feedingvmeans, Valve
means for controlling .the supply of cleansing
i3. A drilling apparatus comprising, in -com
bination, a drill rotating >motor having a casing,
means for >mounting the casing'of said motor for
oscillatory movement, fluid , actuated
feeding
means for said motor connected to'said casing
mounting means, a control block detachably con
nected to said mountingvmeans and removable
therefrom while said feeding means remains con
knected to said mounting means and having for
ward and reverse feed passages connected to said
feeding means, means including a valve member
fluid through said cleansing fluid supply means,
Va switch for controlling the supply of operating
medium to said drill rotating motor, each of said
valve means and said switch mounted on said
control block, and means connected to said motor
casing and operatively engaging one of said valve
means for regulating the latter in accordance with
carried by said control block for controlling the
the load on said motor. o
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lflow of fluid in said forward feed passage, and 30
'7. A drilling apparatus comprising, in com
means including a- pin connected to said motor
bination, a drill rotating motor having a casing,
casing and 'operatively engaging said valve mem
means for mounting the casing of said motor for
ber for'positioning the latter „to regulate fluid
oscillatory movement, fluid actuated ,feeding
supply in accordance with the load on said motor.
means for said motor, means for supplying fluid
4. A drilling apparatus comprising, in com
under Vpressure, to said feeding means, means-for
bination, a drillY rotating motor having a casing,
supplying cleansing fluid to a drill rotated by said
means for mounting` thecasing of said motor for
drill rotating motor, means for supplying operat
oscillatory movement, fluid actuated feeding
ing medium to thev drill rotatingmotor, a control
means for said motor connected to said casing
block detachably connected to'said motor mount
mounting means, a control block-detachably con 40 ing means, valve means for controlling the sup
nected to said mounting means and having for
ply of fluid lto saidn feeding'means, valve` means
ward and -reverse feed passages connected to said
for ' controlling the supply of cleansing fluid
feeding means and itself detachable from said
through said Y cleansing fluid supply means, a
mounting means while said ¿feeding means re
switch lfor controlling the supply of operating
mains connected lto the latter, valve means car 45 medium to said drill rotating motor, each of said
ried by said control block for connecting said
valve means and said switch mounted on said con
trol block, and means connected to said motor
casing and operatively engaging said first men
means including a valve member carried by lsaid
tioned valve means for regulating the flow of fluid
control block for controlling the flow of fluid in 50 to said feeding means in accordance With the load
said forward feed passage, and means including
on said motor.
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a pin connected to said motor casing and opera
8. A drilling apparatus comprising, inY combi
tively engaging said valve member for position
nation, a drill rotating motor v_having a casing,
ing the latter Ito regulate fluid supply in accord
means for mounting the casing of said motor for
V,ance with the load on said motor.
- Y55. oscillatory movement, fluid actuated feeding
5. A drillingrr apparatus comprising, in comb-i
means for said motor, means for supplying fluid
nation, a drill rotating-motor having aY casing,
under pressure to said feeding means, means for
eforward andreverse feed passages selectively in
.communication with fluid supply and discharge,
. means for mounting the casing of saidvmotor for
supplying cleansing fluid to a drill rotated _by
oscillatory movement, fluid actuated feeding
said drill rotating motor, means for supplying
means for said motor connected to saidcasing 60 operating medium to the drill rotating motor, a
„mounting means, means for supplying fluidr under
. control block detachably connected .to an outer
pressure to said feeding means, means for sup
vsurface of Vsaid vmotor mounting means, valve
means for controlling the supply of fluid to said
feeding means, valve means for controlling the
plying cleansing fluid to a> drill rotated ,by said
drill rotating motor, means for ysupplying oper
ating medium `to the drill rotating motor, 'a con-_v
supply of cleansingmedium .through said cleans
.trol block _connected 'toîsaid motorV mounting
_means and detachable therefrom while saidfeed
ing means'for said motor remains> connected ,to
ing fluid supply means and a switch for control
ling the supply of operating medium to said drill
rotating motor, each of said 'Valve means and
themotor: casing mounting means, means car
riedv bysaid control block for controlling the sup-`
said switch mounted on said control block.
.7o
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>WIN' W. PAGET.
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