US1632400A - Drilling machine - Google Patents

Description

`,une 14 1927.

G. H. GILMAN DRILLING MAGHINE Filed July 18 Patented June 14, 1927.

UNITED STATES PATENT OFFICE.

GEORGE H. GIIHAN, Ol' BELMONT, MASSAGHUBETTI.

DREI-'LING MACHINE.

Application led July 1B,

My invention relates to drilling machines and particularly but not exclusive] is con- Vcerned with the moving of the too of such a machine relatively to the work.

My invention will be best understood from the following description when read in the light of the accompanying drawingsof a specific embodiment of my invention selected for illustrative purposes while the scope of my invention will be more particularly pointed out in the appended clalms.

In the drawings Fig. 1 is an e evation with parts broken away of a machine constructed according to my invention;

Fig. 2 is a view on an enlarged scale with parts in section and showing a detail of the machine;

Figs. 3, 4, 5 and 6 respectively are sections on the lines 3 3, 4-4, 5--5 and 6-6 of Fi 1.

Refrring to the drawings, I have shown a drillin tool 1, and an actuator 3 for said tool; an although these may be of any suitable or usual type, as shown I have indicated the tool as a rock drill steel and its ctilator as a fluid pressure operated hammer For feeding the tool relative to the work I herein provide a feed cylinder 5, the feed cylinder and actuator as shown being arranged side by side and secured together in any suitable manner so that motion of the feed cylinder will be imparted to the actuator and hence to the tool. As will be understood by those skilled in the art, the actuator may comprise front and rear heads or casing sections 7, which are secured in assembled relation with the cylinder section or other sections of the casingby means of side bolts 9, of which I have shown four. As shown the feed cylinder 5 at opposite ends is provided with pairs of oppositely arranged perforated ears 11 through the perforations of which extend the projecting ends of the side bolts adjacent the feed cylinder.

As illustrated, fitting the interior of the feed cylinder I rovide a feed iston which comprises the piston proper or ead I3 and the hollow cylindrical piston rod or stopng bar 15. If desired, the bar 15 ma be of the same exterior diameter as the ead 13 but as shown I have formed the bar of lesser diameter in order to provide the ani921. semi No. 485,707.

cylinder. The bar 15 extends through the rear feed cylinder head 19, and in a manner hereinafter described is releasably secured to a suitable support herein exemplified by the arm 21 carried by the mine column 23.

Extending through the front feed c linder head 25 is a cylindrical bar 2 of smaller diameter than the feed piston and telescopically arranged therewith. As shown, the piston is provided with the cylindrical bores 29, 30 and 31. The bar 27 fits the bore 29 and at the end of the bar is secured a head 33 fitting the bore 31. The bore 30 is of diameter intermediate that of the bores 29 and 31 to provide a stop shoulder 35 for the head 33 and a conduit 37 which conduit as shown by Figs. 1 and 3 is placed in ermanent communication with the atmosp ere b means of a ort 39. The port 39 is locate a distance rom the head 13 ap roximately equal to the length of the feed) cylinder so that irrespective of the relative positions of the piston and feed cylinder, the air which leaks around the packing 41 carried by the head 13 and around the packings 42 carried by the head 33 will pass through the conduit 37 into the atmosphere by means of the port.

As shown the end of the bar 27 is provided with `a lpoint 43 for engagin the rock or other wor and for causing t is action I herein connect the end of the bar 15 with an air hose 45 or other source of pressure fluid, the admission and exhaust of which fluid to and from the interior of the bar 15 ,is controlled by means of a three-way valve 47. When pressure iiuid is admitted into the interior of the bar 15 and the latter is secured to its support, said fluid acting on the rearward face of the head 33 will force the point 43 firmly against the work and thus provide a rigid structure along which the cylinder may be moved.

For supportin the bar 15 I have shown an attachment aving two approximately semi-cylindrical halves 49 and 51 adapted to be clamped to the arm 21 by means of the bolts 53. The upper half of the attachment has integrally formed therewith at one side thereof a collar which surrounds and slidingly fits the bar 15. Integrally formed with the opposite side of the half 51 is a jaw 57, and pivoted at 61 to one end of this jaw is a cooperating jaw 59. These jaws are formed with semi-cylindrical re-'.

cesses which fit the bar 15 and thus form a clamp for securing the bar to the lattachment. For operating the clamp I have shown a screw 63' extending through the ends of the jaws remote from the pivot and threadedly engaging the jaw 57, said screw having the shoulder 65 enga 'ng the upper face of the jaw 59. In an o vious manner, by turning the screw byeits o erating hand e 67, the bar 15 may fix y secured to the attachment, or released therefrom and slid through the collar 55.

Herein, for causing the feed cylinder to move the tool toward the work I admit pressure fluid to the chamber 69 of the feed cylinder, and for moving the tool away from the work I admit ressure fluid to the chamber 17 of the fee cylinder. For this purpose, I have shown in the feed cylinder wall, passages 71 and 73 respectively communicating at one end with the interior of the cylinder adjacent its forward and rearward ends, and at their o posite ends respectively communicating with the sockets 75 and 7 formed in the cylinder wall. On the side of the actuator adjacent the cylinder I have shown a pair of nipples 79 which enter the sockets and fit therewith in a fluid-tight manner. The actuator I have shown connected with a source of fluid pressure by means of an air hose secured to the air hose Connection 81, and in the rear cylinder head 7 I have shown a four-way valve 83 having the operating handle 85 and a valve casing formlng a valve chamber 86 in permanent communication with a passage 87 supplied from the air hose connection. Herein this valve is arranged optionally to connect the passages 71 and 73 ofthe feed cylinder altern nately to the air supply and the atmosphere. For this purpose the valve, which ma be in the form of the usual turning plug,

lierein provided with an arcuate oove 89 in permanent communication wit the passage 87 and with an axial passage 91 leading to the end of the valve stem so as to be in permanent communication with the atmosphere. In the same planeA as the groove 89 the valve is shown as provided with a radiall passage 93 leading from the axial passa e 91 to the groove 92 on the exterior of t e valve. The actuator rear cylinder head 7 is shown as provided with an inner member 95 having an exterior cylindrical surface which in a Huid tight manner its the body portion of the head and about which are formed two grooves 97 for establishing communication etween, respectively, passages 99 and 101 leading to the valve Casin and passages 103 and 105 formed throng the nipples and in communication with the sockets the nipples fit. In this manner the passage 99 is in permanent communication with the rear feed cylinder chamber 17 and the paage 101 in permanent communication with the forward feed cylinder chamber 69.

osition shown by i turned cloc wise from the position of Fig.

2 to move the groove 92 out of communication with the passage 101 and the groove 89 into communication with the passage 101, pressure fluid will be admitted to the forward end of the feed cylinder, while the rearward end will be connected to the atmosphere. This will cause the feed cylinder to move toward the work to advance the drilling tool up to the work, after which the actuator may be put into operation to cause the hole to be drilled, the feed cylinder feeding the drill and its actuator during the drllling operation. If it should be desired to withdraw the drill steel from the hole the valve will be moved in a counterclockwise direction past the position illustrated by Fig. 2, to move the groove 92 out of communication with the passage 99 vand the groove 89 of the valve into communication with the passage 99 which will exhaust the front end of the feed cylinder and admit motive fluid to the rear end, and thus cause the tool to be moved away from the work. When the feed cylinder.has `moved toward the work a distance equal to the feed travel, which travel is determined by the effective length of the feed cylinder the valve may be moved to the position of Fig. 2 and the screw 63 may be operated to release the bar 15 from its support, and the bar then be slid through the collar 55 toward thework to the opposite end of the feed cylinder, after which the bar may be again secured to its support and the tool again be fed Iforward a distance equal to the length of thefeed travel. This may be repeated until the tool has entered the work for its full length, after which it may be withdrawn from the hole by reversing the operation just described, or, by moving the actuator away from the work, the tool may be removed from the chuck of the actuator, and the actuator then swung out of line with the tool to permit the latter to be withdrawn manually. f

For supporting the tool when the hole is being spotted, or when for other reasons this is necessary or desirable', I have shown means for suspending the portion of the tool remote from the actuator from the bar 27. For this purpose I have shown a clamp comprising the members 107 and 109 hinged together at 111 and having1 jaws 113 adapted to engage the bar 27. T e lower portion of the members 107 and 109 I herein provide with the semi-cylindrical recesses 115, which when the jaws of the members engage the bar provide a cylindrical opening for loosely supporting the tool. For causing relative movement between the members 10 and 109 I have shown a screw 117 threadedly engaging the member 109 'and having an operating handle 119 providing a shoulder 121 abutting the outer surface of the member 107.

In Figs. 1 and 2, I have shown a retarder for o posing motion of the feed cylinder or for c amping the feed cylinder to the bar 15. As shown I provide a member 123 having a bore 125 fittlng over the reduced diameter portion 127 of the rear feed cylinder head 19, and having an opening 129 fitting the bar 15. Holding the feed cylinder, the head 19 and the member 123 in assembled relation I herein provide bolts 131 passing through perforations in the ears 133 and 135 respectively carried by said member and feed cylinder. As illustrated the member 123 carries a sleeve 137 which is flexible and may be formed of a tubular section of interwoven fibers of asbestos and metal, being known to the trade as Multabestos. The member 123 is shown as provided with a raised portion 139 having a screw-threaded opening receiving the screw 141, said screw being provided at one end with an operating handle 143, and at its opposite end provided with a head 145 secured to the screw and fitting the bore 147 of the enlargement 139. As shown the member 123 provides a chamber which surrounds the sleeve 137, and in said chamber is placed a suitable yieldable mass which, when the screw is operated tomove the head 145 inwardly, will serve to compress the sleeve to cause the latter to rip the bar 15. This mass, hereinafter refgerred to as a fluidic mass, may be any substance or structure which has the properties of a fluid, as for example, a liquid substance or granular structure. 'I have shown the mass as made up of small spheres, and providn for their insertion into the container affored by the member 123 I have shown the wall thereof as provided with an openin closed by the removable plug 149. It wil be understood that the degree of gripping of the bar 15 by the member 37 may be regulated by means of the screw 141.

Although I have described for illustrative purposes one specific embodiment of my invention, it will be understood that wide deviations may be made therefrom without departing from the spirit of my invention.

Claims.

1. A drilling machine having, in combination, an elongated supporting part adapted to be supported at spaced points lengthwise thereof, a drill steel actuator arrangel in parallel relation to said part, means includmg a feed cylinder for slidably supportin said actuator on said part between sai spaced points, said feed cylinder being rotatable about the axis of said part.

2. A drilling machine having, in combination, an elon ated -extensible supporting part adapted to e su ported at spaced points lengthwise thereo a `drill steel actuator arranged in arallel relation to said art, means inclu in a feed cylinder for slit ably supportin sai actuator on said part between sai s aced points, being rotata le about the axis of said part.

3. A drilling machine having, in combination, an elongated suplporting part comprising a pair of opposite y extending telescopically arranged members each adapted to engage a suplport for rigidly supporting said part, a fee piston head carried by one of said members, a feed cylinder slidabl and rotatably mounted on said part an surrounding said iston head, and a drill steel actuator carried) by said cylinder in parallel relation thereto.

4. In a drilling machine, a longitudinally arran ed stationary support, a drill, actuator trmed for carrying a drill, means for mounting said actuator on said support and providing for movement of said actuator along said sup ort and for swin ing of said actuator out o line with the dri l hole, said means comprising a cylinder on said support intermediate the length of said support, said cylinder carryin said actuator, and a piston adjustable lengtwise of said support cooperating with said cylinder.

5. In a drilling machine, a feed cylinder, a piston, connected relatively adjustable rods for supporting the machine extending through opposite ends of said cylinder, one of said rods carrying said piston a drill actuator arranged to be moved by said cylinder, and means for admitting pressure Huid to said cylinder for moving it relatively to said piston. Y

6. In a drilling machine, a piston, a-cylinder cooperating with said piston, a rod carrying said piston and exten'dinor through one end of said cylinder means or supporting said rod, a second rod for support extending throu l1 the opposite end of said cylinder and t rou h said piston into the first named rod, a dril actuator arranged to be moved by said cylinder, and means for admitting actuating Huid into said cylinder.

7. In a drilling machine, telescopically arranged parts forming an extensible supportmg member, a piston carried thereby at an intermediate portion thereof, a c linder fitting said piston and member and eing movable longitudinally thereof and rotatably mounted thereon, a drill actuator carried by said cylinder, means for admitting pressure fluid to said cylinder for moving it relative to said member, and means for locking said cylinder in adjustable longitudinal and angular positions relative to said member.

8. In a drilling machine, telescopically arranged parts forming an extensible supporting member, a drill bit steel actuator,

said feed cyl inde-1' ,1

` a piston, a bar telescopically arranged with the first mentioned bar, means for releasably securin said first mentioned bar to a support, a eed cylinder surrounding said piston and each bar, and a drill actuator carried by saidcylinder. i y

11. In a drilling machine, a bar carrying a piston, a bar telescopically arranged with the first mentioned bar, means for re- 'leasably securing said first mentioned bar to a support, a feed' cylinder surrounding said piston and each bar, means for admits ting fluid pressure to said first mentioned bar, and a drill actuator carried by said cylinder.

12. In a drilling machine, a drill actuator. telescopically arranged members, one of which 1s adapted to engage the work, means for securing the other to a sup ort, and means for moving 'said actuator a ong said members.

13. In a drilling machine, a drill actuator,

a feed cylinder for moving said actuator, a

feed piston and piston rod, a rod extending into said feed cylinder and entering said piston and piston rod, meansfor causing said last named rod to be forced resiliently against the `vvork, means releasably securing said piston rod to a support, and'means for admitting. pressure fluid to said c linder.

14. In a drilling machine, a dri l actuator, a feed cylinder for movin said actuator,

a feed piston and piston ro ,f a rod entend-v ing into said feed cylinder and entering said piston and piston rod, means for releasably securing said piston rod to a support, and means for admitting ressure fluld to said cylinder and to sait piston rod, whereby said actuator may be moved relartive to the work and the said second mentioned rod may be forcedv outwardly relab tive to said piston rod to bear against a suport.

15. In a drilling machine, a drill actuator and a feed cylinder secured together in side by side relation, a piston and piston rod for said cylinder, means for securin said rod to a support rearwardly of sai cylinder,

and means carried by said rod for engaging a support forwardly of `said cylinder.

16. In a drilling machine, a drill actuator and a movable feed cylinder secured together in side by side relation, a stationary piston and piston rod slidably and rotatably su porting said cylinder, a single valve carried (y said actuator for admittin a pressure flui to each end of said cylin er, conduits in said actuator and cylinder for conducting said pressure fluid, and cooperating sockets and nipples in the adjacent sides of said cylinder and actuator establishing communication between said conduits.

17. In a drilling machine, a drilll actuator and a movable feed cylinder secured together in side by side relation, passages in said cylinder leading Vto opposite ends thereof, a source of motive fluid supply connected to said actuator, passages provided by said actuator and in communication with said first named passages at the adjacent sides of said cylinder and actuator, and a controlling valve carried by said actuator for connecting the passages provided by said actuator to a source of pressure fluid supply.

18. The combination with a stoper having a tool actuator and a feeding device comprising relatively movable cylinder and pis-A ton members, one of which members is connected to said actuator to move the latter, of

'means for releasably securing the other member to a support; said means and last named member providing that after the ac- ,tuator has been moved the effective length of the cylinder said member may upon release of said means, be moved relative to said support and the Work to permit the feeding device again to operate to move said actuator in the same direction.

19. The combination with a tool actuator of a feed cylinder and a feed piston, means providing for movement of said actuator when said cylinder moves, and means for releasably securing said feed piston to support, whereby after thefeed cylinder has been moved relative to the work said piston may be released from said support and moved through said cylinder in the same direction as that in which the cylinder has been moved, and the feed cylinder may again be moved in the same direction.

20. In a drilling machine, a drill actuator, a feed cylinder and piston for moving said actuator, a bar for sup orting said machine and extending throng opposite ends of aoY IUI) y nu Y said cylinder, and means for supporting said y 21. A drilling machine having in combination, a longitudinally extending member for supporting said machine, a cylinder mounted on said member for relative rotative and longitudinal movement, a piston carried by said member and cooperating with said cylinder, means for admitting pressure fluid to said cylinder, a drill actuator carried by said cylinder with the axis 0f said actuator parallel to the axis of said member, said actuator adapted for carrying a drill steel coaxialA therewith, 'and manually operable means carried by said cylinder for gripping said member.

22. A drilling machine having in combination, a longitudinally extending member for supporting said machine, acylinder mounted on said member for relative rotative and lon itudinal movement, a piston carried by said member and cooperating with said cylinder, means for admitting pressure {iuid to said cylinder, a drill actuator carried by said cylin er with the axis of said actuator parallel to the axis of said member, said actuator adapted for carrying a drill steel coaxial therewith, and manually operable means carried by said cylinder for gripping said member, said last named means comprising a sleeve surrounding said member and iluidlc material for compressing said sleeve.

23. A drillin machine having in combination, a longitu inally extending member for supportin said machine, a cylinder mounted on sai member for relative lon itudinal movement, a .piston carrie member and cooperating with said cyl sai inder., means for admitting pressure ui to said cylinder, a drill actuator carrie by said cylinder with the axis oi said actuator parallel to the axis of said member, said actuator ada ted for carrying a drill steel coaxial therwit and means carried b said cylinder for frictionally gripping sai member.

2a. A drilling machine having in combination, a longitudinally extending member for supporting said machine, a cylinder mounted on said member for relative 'rotative and longitudinal movement, a piston carried by said member and cooperating with said cylinder, means for admitting pressure iluid to said cylinder, a drill actuator car ried by said cylinder with the axis o said actuator parallel to the axis of said member, said actuator adapted for carrying a for supportin drill steel coaxial therewith, means carried by said cylinder for frictionally gripping said member, and manually operable means cooperating with said last named means for rendering it inoperative.

25. A drilling machine having, in combination, a supporting part comprising a pair of telescopically arranged members one o which carries a piston head, a feed cylinder surrounding said members and head an having cylinder heads at opposite ends through which said members respectively project, a drill actuator carried by said cylinder in parallel relation thereto, and means carried by the member projecting rou h the head at the foi'war end of said cylin er a drill steel.

26. A drilling machine having, in combination, a supporting part comprising a pair of telescopically arranged members one o which carries a piston head, a feed cylinder surrounding sai members and head an having cylinder heads at opposite ends through which said members respective y roject, a drill actuator carried by said inder in parallel relation thereto, and means carried by the member projecting throur the head at the forward end of said cylindzer for rotatably supporting a drill steel.

27. A drilling machine having, in combination, a supporting part comprising a pair of telescopically arran ed members one c which carries a piston cad, a feed cylinder surrounding said members and h ead an having cylinder heads at opposite ends through which said members respectively roject, a drill actuator carried by said cylinder in parallel relation thereto, said actuator for carryi g the shank of a drill steel, and a support for the drill steel forward o the front end of said actuator.

In testimony whereof, I have signed my name to this specification.

GEO. H. GILMAN.

tive and longitudinal movement, a piston carried by sai member and cooperating with said cylinder, means for admitting pressure Huid to said c linder, a drill actuator carried by said c lin er with the axis of said actuator paral el to the axis of said member, said actuator adapted for carrying a drill steel coaxial therewith, and manually operable means carried by said cylinder for gripping said' member, said last named means comprislng a sleeve surrounding said member and fluidt material for compressing said sleeve.

23. A drilling machine having in combination, a longitudinally extending member for supporting said machine, a cylinder mounted on said member for relative rotative and longitudinal movement, a piston carried b sai member and cooperating with said cy inder, means for admitting pressure Huid to said cylinder, a drill actuator carried by said cylinder with the axis of said actuator parallel to the axis of said member, said actuator adap ed for carrying a drill steel coaxial therwit and means carried by said cylinder for frictionally gripping said member.

2a. A drilling machine having in combination, a longitudinally extending member for supporting said machine, a cylinder mounted on said member for relative rotatlveand longitudinal movement, a piston carrled by said member and cooperating with said cylinder, means for admitting pressure fluid to said cylinder, a drill actuator carried by said cylinder with the axis of said actuator parallel to the axis of said member, said actuator adapted for carrying a.

drill steel coaxial therewith, means carried by said cylinder for frictionally gripping said member, and manually operable means cooperating With said last named means for rendering it inoperative.

25. A drilling machine having, in combination, a supporting part comprising a pair of telescopically arranged members one of which carries a piston head, a feed cylinder surrounding said members and head and having cylinder heads 'at opposite ends through which said members respectively project, a drill actuator carried by said cylinder in parallel relation thereto, and means carried by the member projecting through the head at the forward end of said cylinder for supporting a drill steel.

26. A drilling machine having, in combination, a supporting part comprising a pair of telescopically arranged members one of which carries a piston head, a feed cylinder surrounding said members and head and having cylinder heads at opposite ends through which said members respectively project, a drill actuator carried by said cylinder in parallel relation thereto, and means carried by the member projecting through the head at the forward end of said cylinder for rotatably supporting a drill steel. n

27. A drilling machine having, in combination, a supporting part comprlsing a pall` of telescopically arranged members one of which carries a piston head, a feed cylinder surrounding said members and head and having cylinder heads at opposite ends through which said members respectively project, a drill actuator carried by said cylinder in parallel relation thereto, said actuator for carrying the shank of a drill steel, and a support for the drill steel forward of the front end of said actuator.

In testimony whereof, I have signed my name to this specification.

GEO. H. GILMAN.

CERTIFICATE 0F CORRECTION.

Patent No. l, 632, 400.

above numbered patent re strike out the comme nf the word "piston" Granted June 14, 1927, to

GEORGE H. GILMAN.

lt is hereby certified that error appears in the printed specification of the insert a comma;

page 4, line 98, claim 18, after the word claim 23, for the misspelled word Letters Patent should be read with "therwith" read these corrections therein that the same may conquirng correction as follows: Page 3, line 86, claim 4, ter the word "drill"; same page, line 101, claim 5, Itter line 130, claim 8,' strike out the word "bitU;

"may" insert a comme; page 5, line 32,

"therewith"; and that the said form to the record of the case in the Patent Office.

Signed and sealed this` 12th day of July,

Seal.

M. J. Moore, Acting Commissioner of Patente.

CERTIFICATE OF CORRECTION.

Patent No. 1,632,400. Granted June 14, 1927, to

GEORGE H. GILMAN.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 3, line 86, claim 4, Strike out the comme after the word "drill", same page, line 101, claim 5, after the word "piston" insert a comma; line 130, claim 8,l strike out the word "btU; page 4, line 98, claim 18, after the word "may" insert a comma; page 5, line 32, claim 23, for the misspelled word "therwth" read "therewith"; and that the said Letters Patent lhould be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 12th day of July, A. D. 1927.

M. J. Moore, Seel. Acting Commissioner of PatentsY

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