US980776A

US980776A - Drill-coupling.

Info

Publication number: US980776A
Authority: US
Inventors: Martin Hardsocg
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-05-08
Filing date: 1908-05-08
Publication date: 1911-01-03
Anticipated expiration: 1928-01-03

Description

M. HARDSOCG. DRILL coUHING.

Patented Jan. 3, 1911.

APPLIGATIQI FILED HAY 8, 1908.

MRS N m Ib wfraea; o g @XM1 f @M f MARTIN HARDSOCG, OF OTTUMWA, IOWA.

DBILL-COUPLING.

Specication of Letters Patent.

1908. Serial No. 431,606.

Patented J an. 3, 1911.

Application filed May 8,

medium under pressure is statlonary, ory

has a fixed relation.

The object of the present invention is to construct a coupling, between the fixed connection for a medium under pressure and the revoluble drill rod and drills,`whioh will be effective and reliable in operation, and which will not leak or vent the medium under pressure.

The invention consists in the features of construction and combinations of parts herev inafter described and claimed.

In the drawin s Fi re 1 is a sectional elevatlon, with t e dril rod partly in section and partly in elevation, and broken 0H,

Fig. 2 a cross section on line 2-2 of Fig. 1, o

oking in the direction of the arrow;l

Fi 3 a cross section on line 3-3 of Fig. 1, ooking in the direction of the arrow; and Fig{. 4 a cross section on line 4-4 of Fig. 1s, loo ing in the direction of the arrow.

The couplin of the present invention has a main shel or casing 1, preferably of a cylindrical form in cross section. The shell or casing, at its rear end, has an interior 2, into which is entered the head of a plug 3 having an interior screw thread, which plug has a rim or iange 4,

the face of which abuts against the end face of the shell or casing 1, when the plug is threaded into the shell or casing, making a tight joint against leakage for a medium underv pressure. The lug has a neck 5 rearwardly extending rom the center and terminating 1n a stem 6 having an exterior vscrew thread for the attachment of a supply pipe or tube, not shown, for the medium under pressure, and the medium under pressure is free to flow through a passage 7 in the plug, neck and stem to enter the cham-- ber 8 of the main'shell or casing.

A head 9 is located within the chamber 8 of the main shell or casing 1, and has extending forwardly therefrom a tubular neck 10, with a longitudinal passage 11 and `termi- ,je'cted, which ring circular groove or ofl anti-friction nating at its forward end in a nipple 12,`

having an exterior screw thread for the attachment of the drill rod or tube. The tubular neck 10 passes through a bearing ring 13 held in the shell or casing, which ring is fitted close enough to the side walls of the shell to have the necessary frictional enga ement therewith to prevent its turning un er the ordina-ry strain to which it will be subhas, in its face, a semirecess 14: forming onehalf of a ball race, the other half of which is formed by a semicircular recess 15 in the face of the head 9, so as to furnish a ball race for a plurality of anti-friction balls 16 between the head 9 and the rino' 13, so that the head 9 and the tubular neck 10 can revolvo freely within the chamber of the main shell or casing.

A packing ring 17 of any suitable material encircles the tubular neck 10 Vin advance of and abutting against the face of the rin 13, anda ring 18 encircles the tubularnec 10 and abuts against the packing ring 17, when the parts are assembled. A ring or tubular plug 19 is entered into the'forward end'of the main shell or casing, and has an annular flange or rim 20 which, when the parts are together, abuts against the end face of the main shell orA casing, as shown in Fig. 1. The tubular plug 19 has an interior screw thread, ywhich threads onto a screw thread around the exterior of the tubular neck 10, y

connecting the plug and the neck one with the other. -The rear end face of the tubular plug 19 has therein a semi-circular recess 21, forming one-half of a ball race, and the other half of the ball race is formed in the front face of the ring 18 by a semi-circular recess22, the two recesses 21 and 22 constituting a ball race forreceiving-a plurality balls 23 by which, in connection with the anti-friction balls 16, the head and the tubular neck, with the tubular plug 19, are free to revolve within the shell or casing 1 of the coupling.

The front face of the flange 20, adjacent to the tubular neck 10, has therein a recess or groove 24, which receives ak flat ring 25 having a tooth or lug 26, which enters a groove 27 formed in the threaded portion of the tubular neck, as shown in Fig. 1, the tooth serving as a key to prevent rotative movement of the plu 19 about the neck 1() after the parts have een assembled. A. lock or jam nut 28 is threaded onto the threaded portion of the tubular neck 10, and serves to hold the tubular plug 1t) against unscrcwing in the operation of the drill. A ring or band 29 cncircles the tubular neck 10 in advance of the lock or jam nut 28, and abuts against the shoulder formed by the threaded portion of the tubular neck, as shown in Fig. 1. This ring or band 29 has, on one side, a hole 31 which can be brought into communication with a .hole 32 in the tubular neck 10, for permitting oil to flow iAhrough the interior passage in the drill shank and oil the hammer and analogous parts operating at the terminus of the shank; and the neck or band v29 is held in place by a set screw 33, the stem of which passes through a slot 34 in the ring or band and enters the wall of the tubular neck, as shown in Fig. el, so that the ring or band can be turned to open communication between the oil holes 31 and 32, or close communication between such holes, when the holes are not required for oiling purposes. The oil will tlow in the same direction as the fluid through the stem; hence, the fluid will assist in carrying the oil to the hammer and other parts, not shown, carried on the end of the stem of the drill rod.

The drill rod, in the construction shown, is a tubular rod having a wall orbody 35 and a spiral flange or wing 36, encircling the center or body 35, with a spiral channel or passage 37 between the spiral flange or wing; and the rod has a passage 3S, which is in communication with the passage 11 of the coupling neck and head, so that a medium under pressure can be forced through the tubular drill rod for use. It is to be understood that the coupling can be used with a solid drill rod instead of a tubular drill rod.

The parts are assembled by enteringthe head 9 and the tubular neck 10 into the chamber 8 of the main shell or casing, from the opposite end to that in which the plug l is entered and then entering the balls 16 into the half race l5, after which the collar 13 is entered into position to complete the ball race; and the packing ring 17 and ring 18 are then entered into posit-ion within the main shell or casing 1 and around the tubular neck 10 of the coupling. The balls 23 are then entered into the half race 22, and t-he tubular head or gland 19 is threaded onto the tubular neck 10, completing the ball race for the balls 23. The fiat ring 25 is entered into the recess 24,-with the lip or tooth 26 engaged with the slot 27, after which the lock or jam nut 28 is threaded into place, completing the assembling of the coupling. The oiling ring or band 29 is slipped into place and secured by the screw 33 or otherwise, so as to be free to turn.

In use the drill rod is connected with the tubular neck 10 by screw-threading the two together, or otherwise, so that the tubular neck, and the parts having a fixed relation therewith, can be revolved to revolve the drill rod. The coupling, if used with a mediinn under pressure` is eifectually packed against the venting of pressure by the packing ring 17 and by the plug or head 3, to the threaded stem of which the tube or pipe for supplying pressure is attached. The packing ring and the race rings do not 1'e volve, but remain stationary, and the antifriction balls 16 and 23 furnish a ball bearing for the head 9 and tubular neck 10 of the coupling, by which a free revolving of the head and tubular neck is obtained. The coupling, as a whole, enables a tube for supplying a medium under pressure and a drill rod to be connected together in such manner as to effectively prevent venting of the pressure and at the same time permit the drill rod to be revolved; and the oiling band or ring enables the bearing for the tubular neck and its head to be lubricated without the venting of' the medium under pressure.

That I claim as new and desire to secure by Letters Patent is:

1. In a drill coupling, the combination of a main easing, a hollow plug, having a passage therethrough, secured into and closing one end ot the casing, a tubular neck extending into the casing and adapted to revolve therein, said neck having on one end a head adapted to lie and revolve within said casing, a plug attached to the neck and entered into the other end of the casing, and adapted to revolve within the casing, rings entered between the plug and head and loosely surrounding the sleeve, said rings being held from rotation within the casing by frictional contact with the walls of the casing, roller bearings inserted between one of the rings and the head and between the other ring and the plug, and forming antifrictional surfaces on which the head and plug travel when the neck is rotated, and a drill shank connected to the other end of the neck, substantially as described.

2. In a drill coupling, the combination of a main casing, a plug' secured into and closing one end of the casing, said plug having a passage therethrough for the admission of fluid under pressure to the casing, a tubular neck extending into the easing and adapted to revolve therein, and having on one end a head adapted to lie and revolve within said casing, a plug attached to said neck and entered into the other end of the casing, and adapted to revolve within said easing, and rings interposed between the plug and the head and loosely surrounding the neck, said rings being held from movement within said casing by frietional contact with the walls of the casing and serving to prevent lateral movement of the neck and its parts within the casing, substantially as described.

3. In a drill coupling, the combination of a main casing, a hollow plug, having a passage therethrough, secured into and closmg one end ofthe casing, a tubular neck extending into the. casing and adapted to revolve therein, said neck having ofi-one end a head adapted to lie and revolve within said rcasing, a plug attached to the neclLand entered into the other end of the casing, and adapted totrevolve within the casing, rings entered between the plug and h'ead and loosely surrounding the sleeve, a ring of packing ma'- terial interposed between said rings, said rings being held from rotation within the casing by frictional contact with the walls of the casing, roller bearings insertedbetween one of the rings and the head and between the `other ring and the plug, and forming anti-frictional surfaces on which the head and plug travel when the neck is rotated, and a drill shank connected to the other end of the neck, substantially as described.

4C. In a drill coupling, the combination of a inain casing, a plug secured into and inclosed in one end of the casing, said plug having a passagetherethrough for the admission ot' fluid under pressure to the casing, a tubular neck extending into the casing and adapted to revolve therein, and having on one end a head adapted to lie and revolve within said casing, aplug attached to said neck and entered into the other end of the casing, and adapted to revolve within said casing, rings interposed between the plug and the head and loosely7 surrounding the neck, and a ring of packing material interposed between said rings, said rings being held from movement within said casing by frictional contact with the walls of the casing andserving to prevent lat-eral movement of the neck and its parts/within the casing, substantially as described. i

5. In a drill coupling, the combination of a main casing,"a hollow plug, having a passage therethrough, secured into` and closing one-end-of the casing, aftubular neck extending into the casing and adapted to revolve therein, said neck having on one side a head adapted to lie and revolve within said casing, a plug attached to the neck and entered into the other end of the casing, and adapted to revolve within the casing, a locking ring entered into a recess in the face of the plug, said locking ring being provided withl a tooth adapted to enter a groove in the outer face of the -neck and preventing loosening ofthe plug from lthe neckduring the rotation of the neck, rings entered between the plug and the head and loosely surrounding the sleeve, said rings being held from rotation within the casing by frictionall contact with the walls of the casing, roller bearings inserted between one of the rings and the head and ,between thee other ring and the plug, and forming anti-frictionalsurfacesl on which the head and plug travel when the neck is rotated, and aA drill shank connected to the other end of the neck, substantially as described.

6, In a drill coupling, the combination of a' main casing, a plug secured into and inclosed in one end of the casing, said plug.

having a passage therethrough for the admission of fluid under pressure to the cas ing, a tubular neck extending into the casing and adapted to revolve therein, and having on one endv a head adapted to lie and revolve within said casing,a plug attached to said neck and entered into tlie other end of the casing, and adapted to revolve within said casing, a locking rinor entered into a recess in the face of the plug, said locking ring being provided with a tooth adapted to enter a groove in the outer face of the neck and preventing 'loosening of the plug from the neck during the rotation of the neck, and rings interposed between lthe plug and the head and loosely surrounding the' 4 neck, said rings being held from 4movement within said casingby frictional contact with the walls of the casing and serving'to prevent lateral movement of the neck and its parts within the casing, substantially as described.

7 In a drill coupling, thecombination of a main casing, a hollow plug, having a passage therethrough, secured into and closing one end of thecasing, a tubular neck ex tending into the casing and adapted to revolve therein, said neck having on one end a head adapted to lie and revolve within said casing, a lplug attached to theneck and en- Yt'ere'd'into the other end of the casing, and

adapted to revolve within the casing, rings entered between the plug and head and loosely surrounding the sleeve, said rings being held from rotation within the casing by frictional contact with ythe walls of the casing, roller bearings inserted between one of the rings and the head and between the other ring and the plug, and forming antifrictional surfaces on which the head and plug travel when the neck is rotated, a drill o shank connected to the other end of the neck, said neck having a hole therein to permit oil to enter the interior of the neck and fiow downward therein, to oil the drilling mechanism attached to the lower end of the drill rod, and means for closing said opening, substantially as described.

' 8. In'a drill coupling, the combination of a main casing, a plug secured into and inclosed in onefend of thecasing, said plug having a passage therethrough for the admission of fluid under pressure to the casing, a tubular neck extending into the casing 'and adapted to revolve therein, and having on one end a head adapted to lie and revolve wlthin saidcasing, a plug attached.

to said neck and entered into the othel` end the interior of the neck and [low 'downward vof the casing, :1nd adapted to revolve Withtherein, to oil the drilling mechanism utin said casing, rings interposed between the tuched i'o the lower end of the drill rod, and plug und the head and loosely surrounding means for closingsnid opening, substantially 5 the neck, said rings being,r held from moveas described.

ment within said casing by frictional conpact With the Walls of the casing and serving to prevent lateral movement of the neck Witnesses:

M ARTIN HARDSOCG.

and its parts Within the casino' said neck \V.A.W01ni,

a: 10 having a, hole therein to permn; 011 to enter ALTA GRAY.