US1713471A - Drilling apparatus - Google Patents

Description

y 14, 1929- E. ca. GARTIN 1,713,471

DRILLING APPARATUS Filed March 19, 1925 -2 Sheets-Sheet 1 o i I I I 15 5 22 l k v a May 14, E g RT N 7' 1,713,471

DRILLING APPARATUS Filed March 19, 1925 2 Sheets-Sheet 2 liwezziar' 48' ZZZ/arr filiarhm Patented May 14, 1929.

UNITED STATES PATENT OFFICE.

BEER G. GARTIN, F CLAREMONT, NEW HAMPSHIRE, ASSIGNOR TO SULLIVAN MA- CHINERY COMPANY, A CORPORATION OF MASSACHUSETTS. I

DRILLING APrARArus.

Application filed larch 19, 1925. Serial No. 16,779.

My invention relates to drilling apparatus. An object of my invention is to provide an improved drilling apparatus. Another object of my invention is to provide an improved drilling mechanism having improved supporting means therefor. Still another object of my invention is to provide an improved portable drilling mechanism mounted on a Wheeled truck thereby facilitating transportation of the same. A further object of my invention is to provide an improved drllling mechanism especially adapted to use in drilling deep holes having improved supporting and guiding means for the drill. A still further object of my invention is to provide an improved truck supported drilling mechanism especially adapted to use in drilling deep holes as in quarry work wherein improved feeding and guiding means for the drill are provided. Still another object of my invention is to provide an improved wheel supported drilling mech-' anism of an exceedingly rugged and inexpensive character especially adapted to use in drilling deep holes.

In the accompanying drawings I have shown for purposes of illustration one form which my invention may assume in practice.

In these drawings,

Fig. 1 is a side elevational view of my 1mproved drilling apparatus. 7

Fig. 2 is a rear end elevational view of the drilling apparatus shown in Fig. 1, the gu ding frame being shown adjusted in a plurallty of positions.

Fig. 3 is a plan elevational v1ew oi? a portion of the drilling apparatus shown in Figs. 1 and 2.

Fig. 4 is a'detail elevational view taken substantially on line 4 4 of Fig. 2, the view being partially broken away to facihtate illustration.

Fig. 5 is a detail elevational view of a portion of my improved hoisting mechanism for the drill, the view being partially broken away to facilitate illustration.

Fig. 6 is a fragmentary sectional view taken substantially on line 66 of Fig. 3.

Fig. 7 is a transverse horizontal sectional view taken substantially on line 7 7 of Flg 1.

In this illustrative embodiment of my 1nvention I have shown a'wheeled truck, generally designated 1, which comprises longitudinally extending parallel channel irons or able manner, a usual draw bar 7, while the rear axle is held rigidly with respect to the channel irons 2 by means of bracing members 8.

It will herein be observed that mounted upon the upper surfaces of the channel irons 2 at the rear end of the truck frame are suitable bearing blocks 9 riveted to the channel irons and these blocks are provided with detachable cap members 10 held in position by suitable screws 11. These bearing blocks 9 and caps 10 form supports or journals for transversely extending cylindrical bearing members or trunnions 12 rigidly secured in any suitable manner to a transversely disposed bracket member 13 which in turn forms asupport or bearing for a suitable swivel plate 14 adapted to be held in operative adjusted position by means of a suitable clampand bolt connection 15. It will herein be noted that the swivel plate 14 is suitably secured, as by riveting, to atransverse plate 16, in turn rigidly secured in any suitable manner to parallel vertically disposed guiding members 17 herein in the form of channel irons.

As illustrated, the channel irons 17 are rigidly held in spaced relation by means of transversely disposed bracing plates 18 held in rigid relation with respect to the channel irons by means of suitable rivets. The channel irons 17 are adapted to be held in rigid relation with respect to the truck 1 by means of adjustable telescopic bracing members or rods 19, these rods being secured at their lower ends to the truck and at their upper ends to a transverse plate 20 (see Fi 7), the

plates 20 being adapted to be secure as by a bolt and slot connection 20, to a cooperating transverse plate 21. As shown, the channel irons 17 form guiding members for a. cradle structure and which is adapted to carry, by means including suitable clamping bolt 23, 9.

'22 which is herein of comparatively heavy hammer drilling mechanism, generally desi'g- 1 nated 24. It will herein be noted that the hammer drilling mechanism 24 may be of any standard construction and includes a motor which is adapted to deliver a series of hammer blows to the rear end of a relatively long hollow drill steel 25 in a well known manner. The steel 25 is carried in any suitable manner within the forward end of the hammer drill 24, As this hammer drill does not per se enter into my invention, it is believed that a specific description of the same is unnecessary.

Furthermore, secured to the upper end of the cradle 22, as at 26, is a flexible element 27, herein in the form of a cable or rope, which passes upwardly around a centrally located guide sheave 28 suitably secured to a transversely disposed shaft 29, the latter being journaled at its outer ends in bearing brackets 30 suitably rigidly secured to the upper end of the channel iron 17. As shown, the cable 27 passes downwardly from the guide sheave 28 and is adapted to be wound upon a winding or hoisting drum 31 journaled upon a transversely disposed shaft 32 carried by suitable bearing brackets 33 rigidlv secured to the channel irons 17 adjacent the swivel connection 12, 14. Suitably secured with respect to the drum 31 is a worm gear 34 which is meshed with a worm 35 secured to a lo tudinally extending stub shaft 36 journa ed in the bracket 33. Suitably secured to the shaft 36 is a sprocket 37 and this sprocket 37 is connected by means of a chain 38 in operative driving relation with a sprocket 39 suitablv secured to a longitudinally extending stub shaft 40 disposed parallel to the shaft 36 and at one side thereof, and this shaft 40 is journaled within a suitable bearing block 41 suitably secured to the side of one of the angle irons 17 and the bracket 33, respectively. Secured to the shafts 36, 40 are suitablel operating members 36 and 40 respective y.

As illustrated, the lower ends of the channel irons 17 have rigidly secured thereto, as by bolts 42, a transversely extending bracket or support member 43 which has pivoted thereon, as at 44, a clamp member 45. The clamp member 45 is adapted to be locked with respect to the bracket 43 by means of a suitable removable locking pin 46. Moreover, it will be observed that semi-circular bushings or sleeves 47 are secured, as by riveting, to the bracket 43 and the clamp 45, respectively, and these bushings surround and form guides for the lower or forward end of the drill steel 25. It will also be noted that the forward end of the truck 1 has rigidly secured thereto at each side thereof, as by riveting, upstanding supports 48 to which a transversely extending angle iron 49 is rigidly secured and this angle iron 49 forms a support or stop for the guiding members 17 when the latter are swung downwardly around their pivots 12, as duri transport. As illustrated, a suitable ta 50 is secured between the channel irons 2 intermediate their ends by means of suitable U bolts 51 and this tank is adapted to contain water for supplying cleansing fluid through the hollow drill steel 25 to cleanse the drill hole in a well known manner.

In the operation of, my improved drilling apparatus it will herein be noted that when a hole is to be started, the drill-24 is drawn upwardly in the guides 17 to the top of the latter by means of the hoisting drum 31, the operator manipulating either of the operating members 36 and 40 at that time. The locking pin 46 is then removed and the clamp 45 swung outwardly, as indicated by dotted lines in Fig. 4, and the long drill steel 25 is then inserted within the forward end of the drill 24, the clamp 45 being then swung inwardly and locked in position, the bushings 47 surrounding the lower or forward end of the drill, steel guiding the cutting bit during the starting of the hole. The cable 27 is then gradually unwound from the drum 31 and the drill 24 is fed downwardly by gravity, the comparatively heavy cradle member 22 facilitating feed thereof. When the hole is completed, or if it is desired to change the drill steel 25, the drill is then again hoisted upwardly by means of the drum 31 and cable 27. It will herein be noted that if it is desired to change the inclination of the hole relative to the vertical, the clamp 15 and the bolt 2O may be released and the guides 17 may be swung laterally as indicated by dotted lines in Fig. 2, about the swivel plate 14, the clamp connection 15 maintaining the guides in their adjusted positions. The arcuate slot in the plate 20 permits the necessa lateral movement of the guides 17 relative y to the braces 19. When it is desired to transport the machine from place to place the braces 19 are detached and the guides 17 and drill 24 are swung downwardly about their pivots 12, the upper ends of the guides engaging the transverse supportin member 49 at that time thereby decreasing the overall height of the apparatus.

As a result of my improved invention an improved drilling apparatus is provided of an exceedingliyl' rugged and inexpensive char acter especla adapted to use in drilling deep holes as in quarry work. It will further be noted that an improved drilling apparatus is provided having improvedsupporting and guidin means for the drill. Other advantages 0 my improved drilling apparatus will be clearly apparent to those skilled in the art.

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 is shown 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.

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

1. In a. drilling apparatus, mechanism for supporting and guiding a drill including a wheel supported truck frame, a supporting bracket pivotally mounted on said frame, a drill guiding frame providing an elongated guideway and having a pivotal connection with said bracket to permit lateral adjustment, and diagonal braces connected to said truck frame and also having a connection with said guiding frame above said bracket, said connection permitting relative lateral adjustment of said guiding frame and braces.

2. In a drilling apparatus, mechanism for supporting and guiding a drill including a Wheel supported truck frame, a supporting bracket pivotally mounted on said frame, a drill guiding frame providing an elongated guideway and having a pivotal connection with said bracket, and diagonal braces mounted on said truck frame and having a bolt and elongated slot connection with said guiding frame. above said bracket permitbracket pivotally mounted on said frame, a drill guiding frame providing an elongated guideway and pivotally connected to said bracket for adjustment about an axis perpendicular to the axis of said bracket, and diagonal braces mounted on said truck frame and having a bolt and elongated slot connection with said guiding frame above said bracket to permit lateral adjustment of the guiding frame.

4. In a drilling apparatus, mechanism for supporting and guiding a drill including a Wheel supported truck frame, a supporting bracket pivotally mounted on said frame, a drill guiding frame comprising a pair of parallel elongated guiding members disposable substantially vertically, a plate fixed to said members having a swivel bearing in said bracket to permit lateral pivotal adjustment of said guiding frame, and means for bracing the upper end of said guiding frame at- ELMER G. GARTIN.

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