US1811939A

US1811939A - Drilling apparatus

Info

Publication number: US1811939A
Application number: US168804A
Authority: US
Inventors: Harry C Johansen
Original assignee: Sullivan Machinery Co
Current assignee: Sullivan Machinery Co
Priority date: 1927-02-16
Filing date: 1927-02-16
Publication date: 1931-06-30
Anticipated expiration: 1948-06-30

Description

June 30, 1931. H. c, JOHAN$EN\ 1#811,939

DRILLING APPARATUS Filed Feb. 16, 1927 2 Sheets-Sheet 1- Inven 207": 4;; 131 07719 6f :Iohawflenk Patented June 30, 1931 UNITED STATES PATENT oFFicE HARRY C. JOHANSE-N, OF MICHIGAN CITY, INDIANA, ASSIGIN'OR TO SULLIVAN MA CHINERY COMPANY, A CORPORATION OF MASSACHUSETTS DRILLING APPARATUS Application filed February 16, 1927. Serial No. 168,864.

This invention pertains to rotary drilling apparatus and more particularly to an improved grief stem chuck for such apparatus.-

shown for purposes of illustration one form which the invention may assume in prac.- tice.

In these drawings,

Fig. 1 is a front elevational view of a core drilling apparatus to which the-improved grief st-em chuck is applied, parts being shown in section to illustrate details of construction.

Fig. 2 is an enlarged detail sectional view of the improved grief stem chuck, the view being taken on line 22 of Figs. 4 and 6.

Fig. 3 is is a view similar to Fig. 2 and illustrating the chuck jaws in their outer or released position.

Fig. 4 is a transverse horizontal sectional view taken substantially on line H of as Fig. 2.

Fig.- 5 is a transverse horizontal sectional view taken substantially on line 5-5 of Fig. 2.

Fig. 6 is a transverse horizontal sectional view taken on line 66 of Fig. 2.

In this illustrative construction there is shown arotary core drilling apparatus generally designated 1 and generally comprising a base structure 2 on which is mounted an engine 3 a feeding mechanism 4 and a hoisting mechanism 5, the latter being located immediate to the feeding mechanism and in the rear of the latter. The base 2 is slidably mounted in a usual manner on parallel guideways 6 to enable the drilling apparatus to be moved bodily away from the drill hole during hoisting and lowering of the drill rods. The engine 3 is of the well known steam driven type'and drives through suitable connections (not shown) the hoisting mechanism 5, and also is adapted to rotate the drill rods.

As shown, the feeding mechanism 4 comprises a vertical cylinder 8 suitably supported on the base frame and in which a piston 9 is reciprocably mounted. Pressure fluid, herein water underpressure, is adapted to be conducted to the ends of the cylinder 8-above and below the piston 9 through suitable pipe connections 10 under the control of a manually operable valve 11, in a well known manner. Rigidly secured to the piston 9 is a hollow rod 12 which eX- tends downwardly through a stufiing box 13 carried by the lower cylinder head and upwardly through a stuffing box lt-carried by the upper cylinder head. This hollow rod carries at its upper end a thrust head 15 of usual construction and which carries ball thrust bearings 16. these bearings is a thrust platel? rigidly secured to a hollow drill rod 18, this rod being of'hexagonal cross section at its lower end as at 19 and extends through a correspondingly shaped opening in a rotating 30 member20 of the drill rod rotation mechanism. The member 20 has keyed thereto at its upper'end at 21 a bevel gear 22 which is driven'by a bevel gear 23 suitably con 'nectedto the drivin en ine 3., As clearl shownin Fig. lthe rotating member 20 is journaled in a suitable bearing 2% carried by the supporting frame for the feeding mechanism. Carried at the lower end of the drillrod 18 is the improved automatic 9O grief stem chuck generally designated 25 which will later be described, the latter cooperating with a drill or grief stem 26 by which the usual rod line is carried. The

grief stem 26 carries at its upper end a 5 usual water swivel 27 and lifting bail 28. From the foregoing description it will be obvious that the drill rod may be raised and lowered through the rotating member 20 while the same continuously rotates, and 3c Interposed between consequently the drill rod is rotated as it is fed. It will also be obvious that the longitudinal thrust of the drill rod in either direction will be absorbed by the ball bear ings 16 carried in the thrust head.

The improved automatic chuck as shown in the drawings specifically comprises an upper part or body member 29 threadedly connected at 30 to the lower end the drill rod 18 as clearly shown in Fig. 2. In ac cordance with this illustrative embodiment of the invention, interposed between the member 29 and a lower plate 31 are a plurality of distance pieces or key forming members 32, herein four, held in position by bolts engagingthe lower plate 31 and threadedly connected to the top member 29. These distance pieces or keys are used as a part of the chuck body and also fit in grooves or flutes 34 formed in and extending longitudinally of the grief stem 26. Moreover, it will be noted that there is sufficient clearance between the parts and the grooves 34 to permit free longitudinal movement of the grief stem 26 1'elative thereto. From the foregoing it will be evident that the drill rod and the

members

29, 31 and 32 rotate together and due to the cooperation of the keys 32 with the longitudinal grooves 34 v in the grief stem the latter also is rotated therewith. Again referring to Fig. 2 it will be observed that the grief stem 26 hasformed thereon around its circumference a series of grooves 35, herein three, and each series of grooves is spaced apart longitudinally of the grief stem a distance to correspond wlth the travel of feed of the feed piston 9. Disposed in the space between the parts 32 of the chuck are jaws 36 and these jaws are slidably guided at their lower ends within radial grooves 37 formed in the upper surface of the lower plate 31. The inner sides of these jaws have each formed thereon a series of teeth 38 which interengage with the circumferentially extending grooves formed on the grief stem 26. These toothed jaws are used when drilling with the hydraulic feed to hold the load or weight of the drill rods or may be disengaged from the grief stem when using the hoisting drum and cable as a feeding means for the bit. To operate these jaws 36 an adjusting ring 39 is provided which fits around or surrounds the body of the chuck. As illus trated, this adjusting ring has four rectangular recesses 40 within which the jaws 36 project and the bottoms of these recesses are inclined as at 41 and cooperate with inclined or wedge shaped outer faces 42 of the jaws. The jaws 36 have formed thereon at the sides thereof longitudinally extending grooves 43 disposed parallel with the inclined faces 42 and with these grooves interlocking portions or gibs 44 cooperate, these interlocking portions being formed on blocks or keys 45 disposed within the recesses 40 in the adjusting ring and are suitably rigidly secured to the latter. Formed on the upper part of the adjusting ring 39 are radially projecting flanges 46 which are interlocked with corresponding flanges 47 formed on a locking ring 48 having a grasping portion 49 and surrounding the body of the chuck. The

flanges

46 and 47 are maintained in interlocking relation by means of a stop screw 50 threadedly connected to the locking ring 48 and projecting inwardly (see Fig. 6) within a cut away portion or slot 51 formed within one of the flanges 46. The screw 50 and slot 51 permit limited rotation of the locking ring 48 relative to the adjusting ring 39. The locking ring 48 also has an inwardly projecting flange 52 which overlies the upper surface of the adjusting ring 39 while formed in the inner edge of this flange 52' are notches or recesses 53 which are adapted to receive the jaws 36 when the latter are in their engaged position as will hereinafter be described. Referring to Figs. 2 and 3 it will be observed that the upper part 29 of the chuck body has threadedly connected thereto a radially disposed locking pin or screw 54, while the locking ring 48 is cut away or notched at to permit movement of the locking ring upwardly above the screw 54, the screw passing through the slot 55 during such movement. Furthermore, the adjusting ring 39 is recessed at 56to receive the head of the screw 54 as shown in Fig. 3.

In the use of the improved grief stem chuck, when the operator grasps the portion 49 of the locking ring 48 and lifts the latter upwardly, the gibs 44 move within the grooves 43 in the sides of the jaws, consequently causing the latter to' move outwardly from the position shown in Fig. 2 to their released position shown in Fig. 3, thereby releasing the locking engagement of the teeth on the jaws and the grooves in the grief stem, respectively. As the adjusting ring is moved upwardly the screw 54 passes through the slot 55 in the locking ring and into the recess. 56 in the adjusting ring and the locking ring is then rotated, thereby causing the flange 52 to engage and overlie the upper surface of the screw, thereby locking the jaws in their outer or released position as clearly shown in Fig. 3. \Vhen the locking ring 48 isreleased and allowed to slide downwardly the

tapered surfaces

41 and 42 on the adjusting ring and jaws will cause the latter to be forced inwardly and when the grooves 35 on the grief stem are opposite to. the teeth on the jaws the locking ring will continue to move downwardly by gravity until the jaws are automatically locked to the grief stem. The recesses 53 in the locking ring receive the upper ends of the jaws when in its lowered position and consequently the ring 48 is locked against rotation at that time. These and other uses and advantages of the improved automatic brief stem chuck will be clearly apparent'to those skilled in this art.

As a result of this invention it will be noted that an improved automatic chuck is provided of exceedingly simple and compact character which positively locks the grief stem to the hydraulic during hydraulic feeding of the bit, and which may be applied and released with facility and may be readily locked in its released position in an improved manner. that an improved automatic grief stem chuck is provided which may be applied to a rotary core drilling apparatus of standard commercial construction with a minimum of change.

While I have in this application specifically described one form which my invention may assume in practice it will be understood that this form of the same has been used for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

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

l. A grief stem chuck for a drill feeding mechanism of the character wherein a grief stem is employed comprising a body having means for engaging and driving a grief stem, and means for connecting a grief stem to said body including chuck jaws slidably mounted in said body, means including an adjusting member surrounding and movable relative to said body and connected to said jaws for sliding the latter inwardly into engagement with a grief stem and for releasing said jaws, and means including a member carried by and movable relative to said adjusting member and engageable with said body for locking said adjusting member against movement relative to said body to maintain said jaws in one position, said locking member being releasable from said body to permit adjustment of said adjusting member relative to said body.

2. A grief stem chuck for a drill feeding mechanism of the character wherein a grief stem is employed comprising a body havin" means for engaging and driving a grief stem, and means for connecting a grief stem to said body including chuck jaws slidably mounted in said body, means including an adjust-ing member surrounding and movable relative to said body and connected to said jaws for sliding the latter inwardly into engagement with grief stem and for releasing said jaws, and means including a member carried by said adjusting member and engageable with said body and rotatable relative to said adjusting member for locking It will further be noted said adjusting member against movement relative to said body to maintain said jaws in one position, said locking member being releasable by rotative movement from said body to permit adjustment of said adjusting member relative to said body.

3. A grief stem chuck for a drill feeding mechanism comprising a body having ke portions engageable with longitudinally eX- one position.

4. A grief stem chuck for a drill feeding mechanism of the character wherein a grief stem with teeth is employed comprising a rotatable body having means for engaging and driving a grief stem, chuck jaws slidably mounted in said body, said jaws each having a series of teeth engageable with a series of grooves in a grief stem, means including an adjusting member surrounding said body and connected to said jaws for sliding the latter inwardly to positively engage the grief stem and for releasing said jaws, and means including a member carried by said adjusting member and movable elative thereto for'locking said j aws'in one position.

5. A grief stem chuck for a drill feeding mechanism comprising a body having key portions engageable with longitudinally extending grooves in a grief stem, chuck aws slidably mounted in said body, each of said jaws having a series of teeth engageable with I a series of grooves in the grief stem, means including a slidable member surrounding said body and connected to said jaws for sliding the latter inwardly into engagement with the grief stemand for releasing said jaws, and means-including a member carried by said adjusting member and movable relative thereto for locking said jaws in one position.

6. A chuck for a drill feeding mechanism of the character wherein, a grief stem is employed comprising a rotatable body having means for engaging and driving a grief stem, chuck jaws slidably mounted in said body,.said jaws having inclined outer surfaces, means including an adjusting member surrounding said body and connected to said jaws for sliding the latter, said. adjusting member having inclined surfaces engaging the inclined surfaces on said jaws, and means including a member carried by said adjusting member and movable relative therei to for locking said jaws in their released position.

7. A chuck for a drill feeding mechanism of the character wherein a grief stem with teeth is employed comprising a rotatable body having means for engaging and driving a grief stem, chuck jaws slidably mounted in said body and each having a series of teeth engageable with a series of grooves in a grief stem, said jaws having inclined surfaces, means for actuating said jaws including an adjusting ring connected thereto, and means including a locking ring carried by said adjusting ring and movable rela tive thereto for locking said jaws in their released position.

8. A chuck for a drill feeding mechanism of the character wherein a grief stem is em ployed comprising a rotatable body having means for engaging and driving a grief stem, and means for connecting the grief stem to said chuck body including chuck jaws slidably mounted in said body, means for adjusting said jaws comprising an adjusting ring connected thereto and carried by said body and connected to said jaws, and a lockin ring carried by sail adjusti ring and movable relative thereto for looking said jaws in one position.

9. A chuck for a drill feeding mechanism comprising a body, chuck jaws slidably mounted in said body, means including an adjustable member for sliding said jaws, and means incluoing a member car ied by said adjustable member and rotatable relative thereto for locking said in one position, said locking means also including a pin carried by said body with which said locking member cooperates.

10. A chuck comprising a body, chuck jaws slidably mounted in said body and having inclined grooves formed therein at the sides thereof, and means for sliding said jaws inwardly and outwardly relative to said body comprising an adjusting member surrounding and movable relative to said body and having gib members carried thereby interlocked with the grooves in said jaws and including means carried by and movable relative to said adjusting member for locking said adjusting member to said body to maintain said jaws in one position, said adjusting member being releasible from said body to permit adjustment thereof relative to said body.

11. A chuck comprising a body, chuck jaws slidably mounted in said body having means for engaging and driving a grief stem, and means for connecting a grief stem to said body including means for sliding said jaws inwardly and outwardly relative to said body including an adjusting member movable relative to said body and connected to said jaws, and means for locking said jaws in their released position including an operator controlled member interlocked with said adjusting member and rotatable relative thereto and engageable with said body, said rotatable locking member being releasable from said body to permit adjustment of said adjusting member relative to said body.

12. A chuck comprisim a body, chuck jaws slidably mounted in said body, means for sliding said jaws inwardly and outwardly including anadjusting member connected to said jaws, and means including a member carried by said adjusting member and rotatable relative to the latter for locking said jaws in their released position, said rotatable member being interlocked with said jaws when the latter are in their engaged position.

18. A chuck comprising a body, chuck jaws slidably mounted in said body, means for moving said jaws inwardly and outwardly including an adjusting member connected to said jaws, and means for locking said jaws in position including a member carried by said adjusting member and rotatable relative to the latter, and a locking pin carried by said body with which said rotatable member cooperates.

14:. A chuck comprising a body, chuck jaws slidably mounted in said body, means for sliding said jaws inwardly and outwardly including an adjusting member connected to said jaws, and means including a member carried by said adjusting member and rotatable relative to the latter for looking said jaws in position, said rotatable member having recesses receiving said jaws when the latter are in their inward position.

15. A chuck comprising a body, chuck jaws slidably mounted in said body, means including an adjusting member connected to said jaws for moving the latter inwardly and outwardly, and means including a member carried by said adjusting member and rotatable relative to the latter, and a cooperating pin carried by said body for looking said jaws in position, said adjusting member having a recess therein adapted to receive said pin.

16. A grief stem chuck for a drill feeding mechanism of the character wherein a grief stem is employed comprisin a body having means for engaging and driving a grief stem, and means for connecting a grief stem to said chuck body including radial guideways formed in said chuck body, chuck jaws slidably mounted in said body, means including an adjusting member surrounding and movable relative to said body and connected to said jaws for sliding the latter in said guideways inwardly into engagement with a grief stem and for releasing said aws, and means including an operator controlled member interlocked with said adjusting member and movable relative thereto for locking said jaws in one position, said latter member being releasable from said body to permit adjustment of said adjusting member and freely movable axially relative to said body during such adjustment.

17 A grief stem chuck for a drill feeding mechanism of the character wherein a grief stem is employed comprising a body having means for engaging and driving a grief stem and means for connecting a grief stem to said chuck body including radial guideways, formed in said chuck body, chuck jaws slidably mounted in said guideways, an adjusting ring surrounding said body and movable relative thereto for moving said aws in said guideways, said ring engaging said jaws and having rectangular recesses within which said jaws project, and a locking ring carried by said adjusting ring and movable relative thereto for locking said adjust ing ring against movementrelative to said body to maintain said jaws in their released position, said locking ring being releasable from said body to permit adjustment of said adjusting ring relative to said body and movable freely axially relative to said body during such adjustment.

18. A grief stem chuck for a drill feeding mechanism of the character wherein, a grief stem is employed comprising a body having means for engaging and driving a grief stem and means for connecting a grief stem to said chuck body including radial guideways, formed in said chuck, chuck jaws slidably mounted in said guideways, an adjusting ring surrounding said body and movable relative thereto for moving said jaws in said guideways, said ring engaging said jaws and having rectangular recesses within which said jaws project, and an operator controlled locking ring interlocked with said adjusting ring and rotatable relative thereto for locking said adjusting ring against movement relative to said body to maintain said jaws in their released position, said locking ring being releasable from said body to permit adjustment of said adjusting ring relative to said body.

19. A grief stem chuck for a drill feeding mechanism comprising a body having radial guideways, chuck jaws slidably mounted in said guideways, an adjusting ring for moving said jaws in said guideways surrounding said body and having rectangular recesses within which said aws project, said ring engaging said awe, and a locking ring carried by said adjusting ring and a cooperating locking pin carried by said body and relative to which said locking ring is movable for locking said jaws in their released position.

20. A grief stem chuck for a drill feeding mechanism of the character wherein a grief stem is employed comprising a body having means for engaging and driving a grief stem and means for connecting a grief stem to said chuck body including radial guideways formed in said chuck body, chuck jaws ring relative to said body and slidable rel-.

ative to said body during such adjustment.

21. A grief stem chuck for a drill feeding mechanism of the character wherein a grief stem is employed comprising a body havmg means engaging a grief stem for pre-.

venting relative rotation therebetween and for drlving a stem, chuck aws carried thereby, and means for adjusting said jaws com-' prising an adjusting member surrounding said body and connected to said jaws and having a relatively rotatable grasping member carried by said adjusting member for adjusting the latter, said rotatable member being movable by rotation relative to said adjusting member into engagement with said body for locking said adjusting member in one position. 1

22. A grief stem chuck for a drill feeding mechanism comprising a body having key portions engageable with a grief stem for preventing relative rotation between said body and a grief stem and for driving a stem, chuck jaws slidably mounted in said body, means for sliding said jaws inwardly and outwardly including an adjusting member connected to said jaws, and means including a rotatable locking member carried by said adjusting member and rotatable relative to the latter for locking the latter in one position.

28. A grief stem chuck for a drill feeding mechanism of the character wherein a grief stem is employed comprising a body having means for engaging and driving a grief stem and means for connecting a grief stem to said body including chuclr jaws slidably mounted in said body, a member surrounding said body and connected to said jaws for adjusting the latter, and 'a rotatable looking member carried by and rotatable relative to said adjusting member for locking said adjusting member against movement relative to said body to maintain said jaws in one position, said locking member being movable freely relative to said body when released therefrom to effect movement automatically of said jaws into engagement with a grief stem. 7

24:. A grief stem chuck for a drill feeding mechanism of the character wherein a grief 111g inclined surfaces, an adjusting ring surstem is employed comprising a body having means for engaging and driving a grief stem, chuck jaws slidably mounted in said body, and an adjusting member surrounding said body and connected to said jaws for sliding the latter" inwardly into engagement with a grief stem and for releasing said jaws, and an operator-controlled member carried by said adjusting member and movable rela tive thereto for looking said adjusting member against movement relative to said body to maintain said jaws in one position.

In testimony whereof I aflix my signature.

HARRY C. JOHANSEN.