US675319A

US675319A - Rock-drill.

Info

Publication number: US675319A
Application number: US2117700A
Authority: US
Inventors: William S Boyd Rd
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-06-22
Filing date: 1900-06-22
Publication date: 1901-05-28
Anticipated expiration: 1918-05-28

Description

Nu. 675,3l9. Pa tented May 28, I901.

- w. 3. nova, 3rd.

ROCK DRILL.

(Application filed June 22, 1900.) (No Model.) 2 Sheets-Sheet l.

. 2 i2 I g 55 4% if Y 1. W///////// ITNE 5E NVENTOR.

WEBB Yu wfiw BY MW iwflwv A'fio R N 575.

No. 675,3!9. Patented May 28, I90I.

W. S. BOYD, 3rd.

ROCK DRILL. (Applica tion filed June 22, 1900.

2 Sheets-Sheet 2.

(No Model.)

E N 0D. TYWFKE 4 N WR lNv w ULIITED "STATES PATENT Fries. I

WILLIAM sf'uoYD, 3RD, or Los ANGELES, (JALIFOl-KNIA.

ROCK-DRILL.

- SPECIFICATION forming part of Letters Patent No. 675,319, dated. May 28, 1901.

' Application filed June 22, 1900. SerialNo. 21,177. (No model.)

To all whom/it lit/(y r'n/mc/vt: Be it known that I, WILLIAM b. BOYD, 3rd, a citizen of the United States, residing at Los j Angeles, with post-office address at 534 South Broadway, Los Angeles,) in the county of Los Angeles and State of California, have in vented certain new and useful Improvements I in Rock-Drills, of which the following is a full,

clear, and exact description,reference being had. to the accompanying drawings, which form apart of-this specification.

y Myinvention relates to certain new and use- 'i'ul improvements in rock-drills; and my invention consists in certain features of novelty hereinafterdescribed and claimed.

Figure I is a vertical longitudinalsection of my improved device, showing the carriagesu'ppofrt. Fig. IIisa side elevation. Fig. III is. ,a. transverse section taken on line III III, Fig. V. F g. I'VIis-a section taken on line IV' IV, Fig; VIII. lrig'V is 'a vertical longitudinal section of the body of the drill, taken on line V V, Fig. \I.. Fig. V1 is a'rear olevation. Fig. VII is a transverse section taken on line VII VII, 13g. II. t ,Fig. VIII is in part an el e vation and in part ajsectienshowin g the 7 represents a feed-screw con uected with the bed-plate 6 and having a hand-wheel S'for operatingthe same, the feed-screw? passing through a bracket 9 on the lower side of the casing, whereby the turning of the screw JIIOVQS the casing and'drill. either forward or backward. v

10 represents a screw-plug at the rear end of the casing l, and Ii represents a screwplug at the front end of the casing.

1; represents a striker-shaft extending into ihc'eyliiider 1 and having a flange ill on its -'iune r end, said strikcr-shaft having an enthe reduced section of the shaft extending through a central aperture 11 in the screwplug 10 at the rear end of the casing.

17 represents a cam-wheel having a series of cams 18 on its outer periphery and having a beveled gear-wheel 19 on its inner periphery.

The, cam-wheel 17 is loosely mounted on a the striker-shaft is freed and permitted to travel in the opposite direction, it being forced in said direction by means of an actuatingspring 26, which has been contracted by the cam pressing against the arm and forcing the striker-shaft in the opposite direction.

27 represents a hammer-head with a pin 28 on its inner face, which fits into a recess 2!) on the inner end of the striker-shaft. v

30 represents a drill-shaft located in the central aperture 31 in the plug 11 l at the front end of the casing, said drill-shaft having a chuck 32 secured to its outer end, to which a drill may be attached.

represents a ham mer-head secured to the rear end of the drill-shaft by means of a pin 31, litting into a recess 35 in the same inannor that the hammer-head 27 is secured to the striker-shaft. 'lhnssaid hammer-heads when battered up or ii for any other purpose they may need repairing can bereinoved and rc placed without haviugto remove the shafts. 'llie drill-shaft is thrownforwardwith the drill by the impact oi thestrikeieshaft, the

hammer-hem 27 striking the hammer-head Zilhand is rcciproeaied in the opposite direction by means of a coitspring tie, resting on a hub 87 on-the inner face of the plug 1 I, the drill-shaft being thus returned to its normal position. In order to prod nee the most ell'eetlarged' section II and a reduced section 15, l ive results, it is desirable that as Li e drill is thrown forward it should also travel in a 1'0- tary direction. To accomplish this, I provide a bar 38, having its rear end secured at 8:) to the flange 13 of the striker-shaft, said bar extending forwardly and at an angle to the length of the easiug,whcreby when the strikershaft is recirnocated said bar will also be re rcciprocatcd.

-t0 represents an annular ring resting in a groove 'll at the rear end of the drill-shaft, said ring being provided with a recess 41, through which the bar 38 extends, the effect being that as the striker-shaft is thrown forward the bar 38, moving forward. and at the same time toward the side of the casing, will cause the annular ring and drill shaft to partly rotate in one direction, while the annular ring is returned to the initial point by the bar traveling in the opposite direction as the striker-shaftrcciprocates. "lhe ringlt) is looselygmounted on the drill-shaftand is connected with the same by means of pawls ill,

' plug secured to the rear end of the cylinder,

engaging a ratehet-whecl =14: on the drillshaft.

4 5 represents a door by which access may be had to the interior of the casing.

415 represents an operating-wheel having gear-teeth -17, which mesh with the cam gearwheel.

48 represents a crank for operating the wheel 46.

t9 represents studs on each side of the easing, to which the wheel l6 may be attached, thus operating the device from either side.

50 represents a ball-bearing for the wheel 46.

The flange 1.3 of the striker-shaft '12 is provided on its outer periphery with grooves 51, in which ribs 52 on the inner-sides ot' the easing extend in order to form a guide for said striker-shaft as it rcciprocates.

I claim as my invention 1'. Arockdrillcomprisingacylinderformed with grooved legs, and a pendent bracket, a bed-plate formed with arms, rails supported on the arms and providing tracks for the grooved legs of the cylinder, a feed-screw working in the pendent bracket, turning in the arms of the bed-plate, and having an operating hand-wheel, a plug secured to the front end of the cylinder, aplug secured to the rear end of the cylinder, a drill-shaft, mounted in the front plug, having a removable head, a spring for throwing the drillshaft rearward, a strikenshaft mounted in the rear plug, having a removable head, a spring for throwing the striker-shaft forward, a collar mounted on the striker-shaft, having radial arms, a driven bevel gear-wheel mounted on the rear plug having cams adapted. to impinge against the radial arms for retracting the striker-shaft, and a driving bevel gear-wheel journaled to the cylinder and meshing with the driven bevel gear-wheel.

2. A rock-d rill comprisingacylinder, aplug secured to the front end of the cylinder, a plug secured to the rear end of the cylinder, a drill-shaft mounted in the front plug having a removable head, a spring for throwing the drill-shaft rearward, a striker-shaft having ascrcw-threaded rear end, monntedin the rear plug, and having a removable head, a spring for throwing the striker-shaft forward, an adjustable collar mounted on the rear end of the striker-shaft and having radial arms, aunt adjustable on. the rear end of the striker-shaft, a drivenbev'el gear whecl mounted on the rear plug having cams adapted to impinge against the radial arms for retracting the strikenshaft, and a driving bevel gear wheel journaled to the cylinder and meshing with the driven bevel gear-wheel.

A rock-d rill com prising acylinder, aplug secured to the front end of the cylinder, at

a drill-shaft formed with an annular recess at its inner end, and mounted in the front plug, a spring for throwing the drill-shaft rearward, a striker-shaft formed with a flange at its inner end, and mounted-in the rear plug, a spring for throwing the striker-shaft for-- ward, an annular ring having a peripheral recess and located in the annular recess of the drill-shaft, a pawl secured to the annular ring, a ratchet-wheel mounted on the drillshal't with which the pawl engages, a bar located at an angle to the cylinder, secured, at its rear end to the flange on the striker-shaft and having its forward end engaging in the recess of the annular ing, a collar mounted on the rear end of the striker-shaft and having radial arms, a driven bevel gear-wheel, mounted on the rear plug, having cams adapted to impinge against the radial arms for retracting the striker-shaft, and a driving bevel gearwheel journaled to the cylinder and meshing with the. driven bevel gear-wheel.

=1. In a rock-drill, the combination of a casing, independent striker and drill shafts mounted in said casing, removable hammerhcads secured to the ends of the meeting ends of the shafts, a spring for actuating the striker-shaft, an annular ring on the drillshaft having pawl-and-ratchct connection with said shaft, said annular ring having a recess near its periphery and a bar engaging said recess adapted to travel at an angle with the casing and having one of its ends fixed to the strikingshaft, substantially as set forth.

XVILLTAM S, BOYD, 3m).

\Vitnesses:

J. W. KEMP, Jns. E. KNIGHT.