US815299A - Rock-drill. - Google Patents

Description

PATENTED MAR. 13, 1906.

J. G. LEYNBR.

ROCK DRILL. uruuuxqn mum ma. 1.12%.

2 SHBETB-SHEET 1.

PATENTED MAR. 13, 1906.

3. G. LEYNER. RGGK DRILL.

unmumn mum ma. 1. ma.

2 SHEETS-SHEET 2.

la i-IK JOHN GEORGE LEYNER, 6F. DENVER COLORADO.

Hoaxonic; 7

specificsticn of Laces 2mm.

Patented Harsh 13. 1906.

Origiull lpplloltion Bled June 24, 1904,8srlal No. 213386. Divided and this application filerlnugmt 1. 65. Serial No. 272,1?5.

. a citizen of the United States of America, rc-

siding in the cit and county of Denvcr and State of Colors. 0, have invented a new and restful Rock-Drill, of which the following is a sp'ecification.

My invention relates to improvements in rock-cutting drill-liit-rotating mechanisms for hammer-piston rock-drilling engines; and the objects of m invention are, firstgo provide a rock-dril ing engine havin' a manually-operated drill-hit feediu mi' rotating mechanism; second, to provide a foal-screw drill-bit-rotating mechanism for laminar-piston rock-drills third, to rovide a small smipie light-weight rock-r rilling engine that can be reciprocally fed in a su Eorting-shcll that is adapted to be supporte y's stoping bar or tripod and in which the rock-cutting drill-bit is rotated and fed b the rotation of the feBd-SGIBW. I attain t ese objects by the mechanism illustrated in the accompanyin drawings, in which- V igure 1 is a siclcclcvation of my improved feed-screw drill=bit-rotaling rock-drilli enins. Fig. Ms 9. plan view'thcreof. l ig. 3 1s a central vertical lonlgitudinal sectional view on the line 3 3 of ig.. 2. disc ing removed and a. portion of the cylindcr head being broken away to show the ears;

line 7 7 of Fig.

which eficcf. the rotation of the dr ll-bit; "Fig? from. and elevation of Fig. l thc d highs our; :3.

5 is a vertical transverse sectional view taken on the line 5 5 of Fig. 3. view taken on the line 6 6 of and Fig. 7 is a, vertical transverse section view on 3 showing the drill-operstin cars at this end of the 0 inc, a portion 0? t e cap of the casing in w ich they are lo- Fi 6 is a siiiiilsr" cated being broken away for this purpose;

Similar numersls of reference refer to similsriggrls throoghout the several views.

cfirrisg to'tho drawings, the numeral 1 dos teslhs cylinder of my rock'driliing engmc. This cylinder is providad with an anal bore of two diameters 2 and 3, the larger of which, 2, extends into it from its rear and for the greater portion 01 the length of the piston-hsmmcrs stroke, where it terminutes in a. squarc shoulder 4 at the beginning of the smaller bore 3, which continues from the shoulder to the front end portion of the cylinder. The entrance to the rear end of the cylinder-bore is threaded, and the cylinder is provided with a cylinder-hood 5,

which compcises a ilaugc portion 6, with a pro ecting u xngoimiut portion 7 on its outsidv and a hill) portion on IlB-i msnlo, which is throudod tqsrrew into the threaded lm're of tho vyllurlcr until tho flange boots tightly against lilo cud of the cylinder. At a shor dismnvv from the roar 0nd of the. cylinder 1 form on the cylinder a transverse cylindrical boss portion 8, m which are formed circular air-inlet a )crturcs 9, the entrances of which are! llama ed to receive the threaded confisgti end of a hose, winch ES used to con- F nect t e cylinder to a supply of cmupresscd air. The air-hose may be conuectcd 0 by two port-holes 14 and 15, that are bored throu h the shell of the. bosses 8 at conve ing 9 iquc angles through proicctix ri Sf; that 'cxtcud along the sides of lhecy indcr' and connect the bosses witli a circimifsi'cntial rip 8*" which surrounds thc'cglindor over the v The entrances to t oft-holes H and 18am plugged up tight. a tor the are drilled. At, substantially the some dis nco froni' ho port 13 that, the inletrt 12 is "from the port 13 a circumfcrcnris exhaust,- iort 16 is {ormcd in the cylindvr. This exhaust-port is o 7 n to the atmosplmro through llfoxtcud through the bottom a hold" I T, was

cumfcrcutial rib 16- is formed on tho periphory. of the cylinder over thc port. '16. I n the horn of the cylinder I reciprocally mount. a piston-hammer 18, the peripheral surfuvv of which is nmd c in two diameters l9 and 2;) in lit ilm two dininctcrs of the cliuder's bore. Tho piston-hammer is providc with an axial Imre of hrodimncters 21 and 22, which ox dist-ancc from its'ironl; end The larger bore. 21 of this axicl upcrtoro is at tho roar-42nd Fortioo of'the' piston-hammer, and it extends either side of he lmss, and a. plug 11 is- Thcsc sir-in rom Lhc-rcanpnd of the piston-hanmwr to,

loud into it from its roar and to within a short.

tb' ugh the lower edge of the periphery of .ch a plurality of port-holes 24 are formed that extend radially through the shell of the piston-hammer. hose port-holes form the air-inlet ports to the interior of the pistonhammer. A plurality of exhaust-port holes 25 also radiate from the inner end of the smaller diameter of the axial aperture 22 through the shell of the piston-hammer. In

to the front end of the cylinders bore I place a long drill-bit-holding sleeve 26, which is provided with a slightly-enlarged collar portion 27, which fits into a steppe counterbore 28. formed in the edgeof the cylinders bore, and

15 a large counterbore 29, that extends intothe end of the cylinder. I secure the sleeve in the end of the cylinder by clamping the end of the' cylinder to it. This clamp 1 form by cutting a groove through the end of the 2b cylinder, and on opposite sides of the groove I form lugs 31 and 32, through which I insert- .a bolt 33, which when tightened clamps the nd of the cylinder to the sleeve, securing it rigidly in the end of the cylinder. The front 25 end of the cylinder is providedwith a cylinder-head 34, which is bolted to lateral lugs35, formed on its sides by cap-screws 36. A step 36 is formed on the cylinder-head that projects into the'counterbore. The drill-hold- 0 mg sleeve is provided with an axial aperture 37, which is adapted to receive loose] the shank end 39 of arock-cutting drill-bit 40, which extends through the sleeve into the re ciprocal path of thepiston-hammer, which 3 5 strikes directly on its 'end, as will be described more fully hereinafter. -I preferably make the terminal end of the drill-bit that extends through'the drih-bit-holding sleeve and the hole in this sleeve round, although it may be 40 givena olygonal form,if desired. The large counter orc aperture '29, formed in the forward end of the cylinder, intersects a smaller counterbore 41, which is formed slightly below and at one side of the counterbore 29 in a l 5 lug 41 and intersects it so that the two countated by the gear whenever it is rotated as 4 the hexagon aperture locks the gear to the l drill-bit. The gear 43 fits rotatabl in the (IQ counterboro 41 of the cylinder.

hit N) may be made with any desired num her or arrangement of rock-cutting lips. The

shank may be of an desired form of crosssection from the roc -cutting lips up't-o its 65 rotating gear 42, where some. form of po- T is danlygonal surface is lormed in itfand'the axial aperture in the gear is made to correspond with it, in order to loosely key the gear and drill-bit together. so that the drill-bit will be rotated by the gear.

The cylinder 1 is supported in a shell H by means of guideways 45, which are depended below the cylinder and extend outward from it on opposite sides of it. These guideways lit in slidewav-recesscs 46, formed in the opposite sides of the supporting-shell. On the bottom of the shell 11 depending circular inverted dovetailed hub 47 is formed that is adapted to be adjustably clamped to a sto ing-bar or to a tripod, either ol which I t o not illustrate. This circular hub enables the shell and cylinder to he pivotally adjusted in an \'desired position in any suitable stopingbar or tripod. The rear end of the shell at its sides is provided with projecting lugs 48, to which one end of a pair of rods 49 are bolted. These rods are provided with collars 50 close to their opposite end, and their ends are threaded and project through the. lugs 51,-and nuts 52 are screwed on them against the lugs and clamp them rigidly to the lu s. Theopposite ends of these rods extend through lugs 53, formed on opposite sides of a bearing-block 54, which is rigidly clamped to them by nuts 55, threaded to their ends. This bearin -block is provided with a central aperture 0? two diameters, the smaller a erture of which receives the terminal cm of the feed-screw 56, which projects through it far enough to receive acrankhandle 66, which is keyed or otherwise se cured to it in any suitable manner. In the larger diameter of this central aperture in the bearing-block 54 a gear 57 is rotatably seated. This ear is secured to the feed-screw and may be made integral with it, if desired. The bearing-block is provided with a circular chamber 58, which is formed at one side of ear 59 is rotatably seated in this chamber to mesh with the gear 57. A cap 60 is bolted to the inner side of the block by capscrews 61. A rod 62 extends through the center of the gear 59 and also throu h an aperture in the cap and through the look into a hub portion 63, formed on the rear side of the lock to form a bearing for its rear terminal end. The gear 59 may be secured in an suitable way to the rod 62, or may, if desired: be made an integral part of it. The rod 62 extends from the bearing-block 54 to a-short l distance beyond the front end of the cylinder and passes through the projecting lug 41and 5 gear 43. l

- The gear 43 is provided with an axial aperture that its loosely over the rod 62, and a feather-kev is secured to it that [its loosely and slidably in a keyway or spline 65,for|ned in the rod. This arrangementpermits me to j arrange the gears in the lienring block 54 and the central aperture and intersects it, and a so vital and essenial'feature of en et the drill-bit to give any desired number of rotations or a proportion of a revolution to the drill-bit relative to a, revolution of the feed-screw. The feed-screw 56 is threeded '5 ton nut 66, which is secured to e depending in 67, forrned on the rear end of the cylinder.

he operation of my improved rock drillrotating device is as follows: My improved rock-drilling engine and its supportin shell are mounted on any suitable stopinger in a tunnel, stops, drif or shaft of a mine in eperative relation to rock, and essumin the pretontohe at the end of itsforward stro e in the cylinder, as shown in Fig. 2, the compressed an flows from its source of supply into the inlet'port l2 and through thelateral ports 14 and 15 to the port 13,end entering the c linder between the shoulder 4 of the cylin er and the shoulder of the piston-hammer 2o moves the piston backward to the rear-end of its stroke in the cylinder, and when the ports of the piston-hammer pass the inlet-port 12' the air rushes from the inlet; ort into and through the lurality of radio ports 24 into 2 5 the interior 0 the piston-hammer end totlie reer-end,cushioning it just before it strikes l the "cylinder. The air then, ain enters the inlet-port 9 and the reciproca stroke is re peeted; The iston-hammerstrikes theendof 3o the rock euttm drill-biteach time it is struck by the pistonemmer, and the o crater retotes the crank-handle and thef -serewand feeds the cylinder forward in'its sudgRIorBtijng shell just fast enough to trees the V r o eretive relation torock,an the rotation of t e feed-screw rotates the ear fiflwhiehrotatesthe gear 59, and the rut 62,wirich rotates the gee-r43, and the gear 43 rotates the gear 42, which rotates the drill-bit. Consequently the 40 drill-hit is rotated by the feed-screw at the same time it is being fed forward into rock durin the. operation of the hammer-piston. The rill-hit is simply inserted or pushed into its gear and sleeve and rests loosely in them in striking relation to the path of the iston hammer, and thee der must be fed the operator to from t e drill-bit eonstan grfigsinst the rock; and my piston hem -bit rotating device iossesses the g a ling the operator not onl to do this in the most desrr: able manner, at the gear-rotating mechanism is so sensitive that it transmits from the rock-cuttin H 9 through the drill-bit and gears and t e OEIl-SOI'BW to the hand of the olgerator full knowledge of the character of t c rock the drill-bit is cattle in, as every tremble and vibration of the c rill-bit is dis- Q tinctly felt by the hand of the operator and 6: as the vihrationsof the drill-bit ere very distinetly difierent when drilling in rock of different degrees of hardness and of seanly'enrl talcky and soft rock the operator is'in positive direct physical touch with the cuttin points of the drill-bit, every blow of whic bit against the bot tom of the hole is telegraphed to his hand, and he can govern the rotation of the drill-bit end its feed into the rock according to the conditions of the rock he is drilling in.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, isl 7 1. In a rock-drilling ermine, a cylinder, e supporting-shell in whirl said cylinder is mounted, a listen-hammer reciprocally mounted in serd'cylinder, e drill-bit loosely sup orted in said c 'lindcr, in the reciprocal at of sold piston-hammer, a polygonal surace on said drill-hit, a gear loosely mounted onseid drill-hit and rotatably journaled in said cylinder, a car in mesh with said driller, a rod sl idebly keyed to said geery a fee -screw operetively connected to said cylinder and shell, and means including caring connected to said feed-screw and sun rod for simultaneously rotating said rod and feedserew'. e

2, in sQ'rock-drillin engine, a cylinder, a

supporting-shell in w ich said cylinder is slidebly rnounted, a piston-hammer, reeipro- 9o erilly mounted in said cylinder, e drill-hit supgorted in said cylinder in the reciprocal pet of said piston-hammer, a gear retntehl nrofinted in said cylinder end providedwit 1 epoiggonal-shaped axial e rture, surrounding t e entrance to said dri 1-bit, a polygonalshsyed surface on said drill-bit adapted to loosely in the aperture in said ear, e ear rotatsbly journelod insaid cylintier end arranged in operative mesh with said drill-bits gear, a rod slidingiy keyed to said second gear, a, feed-screw o eratively connected to said cylinder and 3 roll, and means including gearing, connected with said feedscrew and said rod whereby rotation of said feed-screw efl'ects rotation of said drill-bit.

H3. In a rock-drilling engine, an oporotive cylinder and hammer-piston and a. supportin raisin a. feedecrevfoperutively connectof to sui l cylinder and casing to feed said no cylinder thercin s drill-hit in said cylinder, at

mil mouiited'insaid cylinder, at kcywey in said rod, 9. gear surroundin said drill-hit, n 'see'ondfgcnr in mesh with said dl'lll-llits gear, a feather-key secured to said second gear and proiecting loosely into said koywoy of said rod, and means including o. gom'ilw arranged between said food-screw and roll; whereby rotation of said iced-screw ell'erts rotation of said rod end drill-hit.

4, In a rock-drilling engine, a cylinder, at rock-cuttin drill-bit, esnpporting-sln-ll, n. motive-lion controlled hummer-piston for striking said drill-bit, and a feed-screw arranged to feed said cylinder insaid shell, in 12 gear on Enid food-screw, a second gear in mesh with the gear on seirl feed-screw, a. rod secured at one end to said second gear, and sniteljle' connections between the opposite cr'rrlof said rod and drill-bit whereby rotation r 30 tahly support a of said feed-screw and rod cllects rotation of said drill-bit.

5. Ina rock-drill. the combination of a cylinder arranged to support a drill-hit,a pistonhammer reciprocally mounted in said cylinder to strike said drill-hit, a supporting-shell in which said cylinder is slidahly mounted, a feedscre\i' rotatahly mounted in said shell and threadcdlv connected to said cylinder, a gear mounted on said drill-hit. a gear on said iced-screw, a second gear rotatahly supported by said shell. and in mesh with said feedscrews gear, a rod secured at one end to said second gear, and extending to the forward eml of said shell, and a gear slidahly feathered to said rod and in operative mesh with said drill-bits gear. \\'hereh rotation of said feed-screwell'eets rotation of said drill-bit.

6. In a rock-drill. the combination of a cylinder. a drill-hit supported by said cylinder, at pistotrhammer reciprocally mounted in said cylinder to strike said drill-hit. and a supporting-shell in which said cylinder is slidably mounted and provided with a rearwardly-extemlin" portion adapted 'to rotah-ed-serew and its operative crank. agea'r on said drill-hit, a second drillhit gear rotatably mounted in said cylinder in mesh with said drill-bit's gear, and ar ranged to impart rotative movementto said drill-hit when it is rotated, an axial aperture in said second gear, a leather-key in said a erture, a feed-screw rotatahly mounted in said shell and threaded to said cylihrler. a gear rotatahly seated in the rearwardly-extending portion of said shell and mounted on said feed screw, asecond gear rotatahly seated in said rearwardly-extending portion of saidvshell and arranged in rotative mesh with the gear on said feed-screw, a rod secured at one end to said second-named gear. and extending to the forward end of said shell loosely through said drill-bit gear, and a kcyway in said rod into which said feather-key ol said second drill-hit gear extends loose v, as set forth.

7. In a rock-drilling engine, the combination of a cylinder, at piston-hammer, a drillbit having'a gear housed in said cylinder and' mounted loosely on said drill-hit, with a supporting-shell in which the said evlinder is slidahly mounted, a feed-screw threaded to said cylinder and rotatablv mounted in said shell, a "car housed in said shell and secured to said ecd-screw, a rod rotatable ll l0lll'ltt .i at one end in said shell and rotatably mount edIat its opposite end in said cylinder. a gear housed in said shell aml secured at-one end of said rod, arranged in mesh with the gear on anrdghr eaded td said cylinder, and means co neeted with said feed-screw for rotating said rod, substantially as described.

9. In a rock-drilling engine, the combination with a cylinder, a piston-hannner, and a drill-hit, of a su )porting-shell in which the said cylinder is s idably mounted, a bearing block seeural to said shell, a feed-screw provided with a gear rotatably mounted in said hearing-block, a nut threaded to said feedscrew and seeurd to said cylinder, a rod rotatably mounted in said bearing-block at one end andfrotatably and slidably mounted in said cylinder 'a gear secured to said rod, in

mesh with the ear on said feed-screw, and

means cohneete' with said rod and said drillbit i whereby rotation of i said feed-screw,effee-ts rotation of said drill-bit.

it). In a rock-drill, a cylinder having a pie 5 ton-hammer and a revoluljle drillehuc k; a support upon which said cylinder is slidablly;

mounted, a feed-screw in en agement wit.

said cylinder and support, 0 uck-rotating means eccent-rically mounted with respect to said feed-"screw and geared thereto, and means whereby rotationpf said feed-screw IOO elTeets rotation of said chuck, substantially as described. a i

It. In a rock-drill, a cylinder having a pieton-hammer and a revoluble drill-chuck, a support upon which said cylinder is slidablv mounted, a feed-screw in engagement with said cylinder and so port, a. rod extendingloiwitudinally of said cylinder and geared to Suit feed-screw, and means whereby rotation of said feed-screw etl'ccts rotation of said chuck, substantiallv as described.

12. In a rockslrill, a cylinder having a pis t'ou-haanaer and a revolubledrill-chuck asupport upon which said .cylinder is slidah] mounted, a feed-scrmwin engagement wit said cylinder and support, a rod [on itudinally slidahle with respect to said fee sscrew and geared thereto, and means whereby rotation of said feed-screw efl'ects rotation of said chuck, substantially as described.

13. In a rock-drill, a cylinder having a is.-

i ton-hammer,a support upon which the cy in:

said feed-screw, and a gear housed in said cyl- 5 inder, in mesh with said drill-hit gear, and

feathered slidahly on said I'od, substantially as described. H. la a roek-drdhug engine. the combination of a cylinder. at piston-haminer, a drillder is mounted, a drill-lat, feeding means in engagement with said cylinder amlsupport, longitudinally -slidahle means eccentrically mounted with respect to said feeding means for rotating said drill-hit, and gearing wherehy rotation ol'said feeding mean oilect rotation of said drill bit, substantially as de scribed.

14. In a rock-drill, a cylinder having a. ist-on-hammer, a sup orb u on which the 0y inn der is. mounted, a. rill-bit, feeding means in by fofiatien of said feeding means effects rota- 1o tion of said drill-bit, substantially as de scribed. V v

In testimony whereof I aflix my signature in presence of,tw0 witnesses. A

v JOHN GEORGE LEYNER. Witnesses:

R. LOUISE BROWN, GUSTAV RAWBEN.

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