US1621662A

US1621662A - Feeding mechanism

Info

Publication number: US1621662A
Application number: US474406A
Authority: US
Inventors: Elmer G Gartin
Original assignee: Sullivan Machinery Co
Current assignee: Sullivan Machinery Co
Priority date: 1921-06-02
Filing date: 1921-06-02
Publication date: 1927-03-22
Anticipated expiration: 1944-03-22

Description

March 22 1927. 1,621,662

E. G: GARTIN FEEDING MECHANISM Filed June 2. 1921 Patented Mar. 22, 1927.

ELMER Gr. GARTIN, OF CLAREIVIONT, NEW HAMP$HIRE ASSIGNOR T SULLIVAN MA- CHINERY COMPANY, A OOBJEOBATION OF MASSAGHU'iEETTS.

FEEDING MECHANISM.

Application filed June 2, 1921. Serial 1'10. 474,406.

My invention relates to feeding mechanisms and more particularly to feeding mechanism for rock drills of the type known as stopers.

An object of my invention is to provide an improved feeding mechanism. Another object of my invention is to provide an improved feeding mechanism for rock drills. A further object of my invention is to provide an improved feeding mechanisn'i for rock drills of the general type known as stopers whereby greater length of feed may be obtained and whereby the initial point at which the entire normal feeding capacity of the feeding mechanism brought into effect may be varied. Other objects of my invention will appear in the course of the following specification and the appended claims.

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

In these drawings, 7

Fig. 1 is a plan view of a stoper provided with my improved feeding mechanism.

Fig. 2 is a view in longitudinal central section on the line 2'2 of Fig. 1 and on an enlarged scale.

Fig. 3 is a transverse section on the line 3-3 of Fig. 2.

For purposes of illustration I have shown my improved extensible feeding mechanism in use with a stoping drill which comprises a pressure fluid operated motor 1 provided with a control valve 2 and adapted to operate upon a drill steel 3. i

The motor 1 is provided with a rod 4 by which it is, in the present instance, connected with my improved feeding mechanism. The rod 4 is made hollow as indicated at 5 and is connected by way of a fluid conducting passage 6 with a valve 2 which controls the feed in a well known manner. Adjustably mounted on the rod 4 is cylinder 7 provided with a bore 8 in which a piston 9 is disposed, the cylinder being movable relative to the piston under the action of pressure fluid supplied to the cylinder bore 8. The piston 9 comprises a head which is provided with a rearwardly extending piston rod or stem 10 upon which is arranged at its rear extremity a point 11 adapted to engage a wall of the stope, or timbering of any kind, and to serve as a fixed point relative to -which the drill as a whole may move when fed toward the work. The piston rod 10 is made hollow and of a suitable size to telescope over the rod 4 and a series of channels 12 are cut into its inner peripheryto permit the free supply of fluid around the exterior of the rod 4 to the front end of the cylinder 7. A cross bar 13 is rigidly secured to the rear end of the piston rod 10 and is connected by means of side rods 14 with a. sliding clamp 15 which surroundsthe exterior of the cylinder 7 and controls the feed of the cylinder relative to the piston.

For the purpose of controlling the rel ativ position of the cylinder 7 with respect to the rod 4, I provide a clamp mechanism 17 by partially splitting a collar formed inte al with the front end of the cylinder 72l1l placing within the groove 18 within the collar a band of friction material 19 which is adapted to be compressed about the rod 4 by means comprising a bolt 20 and a ban dled nut 21. A spring controlled stop 22 is provided to prevent the accidentalwithdrawal ofthe rod 4 from the cylinder 7.

From the foregoing; description. the mode of operation of my improved feeding mechanism will be readily apparent. When it is desired. after dr lling to the maximum distance permitted by the travel of the cylinder 7 relative to the piston 9. it will be possible by shutting off the air supply tothe cylinder and venting- .he latter by connectingthe supply port 6 with circumferential groove 6 and a vent port '7 respectivel formed in the throttle valve and the valve casing to move the cylinder 7 rearward on the piston 9. and by moving the cylinder 7 as a whole backward along the rod 4 and again fixing it relative thereto to continue the feed for a fur-' ther distance. This mechanism is of particular utility in cases where the changes of steel are not uniform. For example; if a hole of a depth of twenty inches has been drilled audit the travelof the cylinder 7 relative to the piston 9 is twenty inches, if the front of the drill is still six inches from the face of the rock after the cylinder has traveled the full twenty inches, it will be obvious that this steel could not be completely used unless some other means than the piston 9' and cylinder 7 were provided.-

Vi ith my improved construction, however, at the end of the feed-which is possible by means of cylinder and piston, that is, twenty inch feed in, the case assumed the drill runner merely cuts olf'his ainsupplyto the feed cylinder and releasing the clamp 17, forces backwardthe ,entirefeed cylinder 7 adietance of 6inches and 'then reclamps it to the rod 4. The rearward motion of the cylinder 7 has placed the piston 9 six inchesgforward in the cylinder and the cylinder 7 then has a distance of six inches available for forward feed before the rear end of the cylinder again comes in contact with the piston- 9. This will permit'th-e runningin ofthe hole to t he full available 'lengthof the steel and accordingly will not rendernecessary the sacrificing of a portion of the possible drilling-that could be accomplished with any given steel. This is but one example ofthe way in which this mechanism might prove useful and other ways will readily suggestthemselves-to one skilled in the: art. It will also-be evident thatif the drilling is not too hard the mere release of the'clainp 17 will extend thefeed by reason of the air acting on an areavequal tothe area of a circle having-the same diameter as'the rod 4 and forcing the motor 1 androd 4 forward.

While l me in this application specifically described one form which my invention may assumein practice, it will be understood that this form of the same is shown for purposes of illustration and-that the invention. may bejinodi-fied and embodied in other forms without departing-from its spirit or the scope of the ap pended claims.

lVhatI claim as'new and desireto secure by Letters Patent is:

1. In a drilling apparatus, a drilling tool, and feeding means therefgr comprising an extension member secured to and movable with said tool, a normally stationarycylindrical hollow member, member disposed about said cylindrical hollow men iber and connectible in various positions to said first mentioned member, and means for effecting relative movement between said cylindrical hollow member and said-third mentioned member. i

2. In a drilling apparatus, adrilling tool,

' and feeding meansT-therefor comprising a member secured to and movable with said tool, anormally stationarycylindrical hollow member, a member disposed about said cylindrical hollow member and connectible to said first mentioned member, said last mentioned member being zmovable relative to said first mentioned member and said hollowmember, means forfeifecting relative movement between said hollow member and saidthird mentioned member, and means operable to retard the movement of said first mentioned member .relative to said third mentioned member.

3. In a drilling apparatus, adrilling tool, and feeding meansltherefor comprising a member secured to and movable with said tool, a normally. stationary cylindrical hollowmember relative towhich said first mentioned member is movable, a member disposed about said cylindrical hollowanember and connectible' to said first mentioned member, said last mentioned member being movable relative to said hollow member, means for effecting relative movement between said members, and manually controllable means to permit said movements to occur simultaneously or separately.

l. In a drilling apparatus. a drilling tool, and-feeding means therefor comprising an extension rod secured to and movablewith said tool, a feed cylinder adjustable longitudinally of said rod and connectiblethereto, a normally stationaryfeed piston contained in said cylinder, and meansfor supplying fluid to'said cylinder to effect movement of thelatter relative tosaid piston.

55. In a drilling apparatus a drilling tool, and feeding means therefor comprising an extension rod secured-to and movablewith saidtool a cylinder operatively connected to said rod, a normallystationary "feeding pistoncontained in said cylinder and telescopically arranged with respectto said rod, and means for supplying tiuid to said cylinder to effect movement of the latter relative to said piston.

In a drilling apparatus, a drilling tool, and feeding means therefor comprising an extension rod secured toand movable with said tool, a cylinder member. a normal-lystationary piston member contained in said cylinderand having a piston rod securedthereto. said cylinder andpiston being telescopically arranged with respect to saidgfirst-nientionedrod, means for securing one ofsaid members in a plurality of different adjusted positions with respect to said rogl, a-nd means for supplying pressure fluid to said cylinder memberto effect movement ofthe-latter rel ative to said piston member.

*7. :In a drilling apparatus, a drilling tool and feeding means therefor compris ing an extension member secured toand moyable with said tool, a feed cylinder, means for connecting said cylinder in a plurality of ill) different longitudinally adjusted positions with respect to said member, a normally stationary piston contained in said cylinder and provided with an abutment engaging element, and means for supplying pressure fluid to said cylinder member to effect movement of the latter relative to said piston.

.8. In a drilling apparatus, a drillingtool, and feeding means therefor comprising an extension rod secured to and movable with said tool, a cylinder, means for securing said cylinder to said rod in a plurality of longitudinally adjusted positions a normally stationary piston contained in said cylinder and provided with an abutment engaging element, and means for supplying pressure fluid to said cylinder to effect movement of the latter relative to said piston.

9. In a drilling apparatus, a drilling tool, and feeding means therefor comprising an extension rod secured to and movable with said tool, a cylinder within which said rod extends, the position of said cylinder being adjustable relative to said rod, a normally stationary piston contained in said cylinder adapted to telescope with said rod and provided with an abutment engaging element, and means for supplying pressure fluid to said cylinder to effect movement of the lat ter relative to said piston.

10. In a drilling apparatus, a drilling tool, and feeding means therefor comprising an extension rod secured to and movable with said tool, a cylinder within which said rod extends, the position of said cylinder being adjustable relative to said rod, a normally stationary piston contained in said cylinder adapted to telescope with said rod and provided with an abutment engaging element, means between the exterior of said rod and said piston for connecting the interior of the latter with the cylinder ata point in front of the piston, and means for supplying pressure fluid to said cylinder to effect movement of the latter relative to said piston.

11. In a drilling apparatus, a drilling tool, and feeding means therefor comprising a hollow extension rod secured to and movable with said tool, a cylinder within which said rod extends, the position of said cylinder being adjustable relative to said rod, a normally stationary piston contained in said cylinder adapted to telescope with said rod and provided with an abutment engaging element, means between the exterior of said member and said piston for connecting the interior of the latter to said cylinder at a point in front of said piston, means for supplying pressure fluid through said hollow rod to said cylinder to effect move ment of the latter relative to said piston, and controlling means for said fluid supply.

12. In a drilling apparatus, a drilling tool, and feeding means therefor comprising an extension rod secured to and movable with said tool, a cylinder adjustably arranged with respect to said rod, means for clamping said cylinder to said rod, a normally stationary piston contained in said cylinder and relative to which the latter is movable, and means for supplying pressure fluid to said cylinder to effect movement of the latter relative to said piston.

13. In a drilling apparatus, a drilling tool, and feeding means therefor comprising an extension member secured to and movable with said tool, a member manually adjustable longitudinally of said member and connectible thereto, a normally stationary member extending within said adjustable memher and relative to which the latter is movable, and means for effecting movement of said adjustable member relative to said stationary member.

14. In a drilling apparatus, a drilling tool, and feeding means therefor comprising a hollow extension rod carried by and movable with said tool, a cylinder manually adjustable longitudinally of said rod and connectible thereto, a normally stationary piston contained in said cylinder, and means for supplying pressure fluid to said cylinder to effect movement of the latter relative to said piston.

15. In a drilling apparatus, a drilling tool, and feeding means therefor comprising an extension member in the form of a hollow rod carried by and movable with said tool, a feed cylinder cooperating with said rod, a normally stationary feed piston contained in said cylinder and relative to which said cylinder is movable, means to permit adjust ment of both said cylinder and piston relative to said hollow rod, and means for supplying pressure fluid to said cylinder to effect movement of the latter relative to said piston.

16. In a drilling apparatus, a drilling tool, an extension member secured to and movable with said tool, a cylinder cooperating with said member and movable longitudinally relative thereto, a normally stationary piston contained in said cylinder and relative to which said cylinder and said member are movable, means for supplying pressure fluid to said cylinder to effect movement of the latter and said member relative to said piston, and means permitting independent-or simultaneous movement of said cylinder and member.

17 In a drilling apparatus, a drilling tool, and feeding means therefor comprising an extension member secured to and movable with said tool, afeed cylinder connectible to said member in different longitudinally adjusted positions, a normally stationary feed piston contained in said cylinder, and means for supplying pressure fluid to said cylinder to effect relative movement between the latter and said piston.

18. In a drilling apparatus, a drilling tool, and feeding means therefor comprising an extension rod secured to and movable with said tool, a feed cylinder within which said rod extends, means for securing said cylinder to said rod in different longitudinally adjusted positions, a normally stationary feed piston contained in said cylinder and having an abutment engaging piston rod secured thereto, and means for supplying pressure fluid to said cylinder to effect movement of the latter relative to said piston.

19. In a drilling apparatus, a drilling tool,

and A feeding Y means therefor comprising an extensionrod secured to and movable With said lIOOL El leed cylinder Within which said rod eXtends, means forsec-ur-ingsaid .eylinder to said rod in difl -erentlongitudinally adjusted ;positions, a normally stationary teed piston contained in said cylinder and having an abntment'engaging piston rod secured thereto, means'for sup-plying pres sure fluid to:said cylinder-to eii'ectmovement of the latter relative to said aiston, and means for controlling the movement of saideylinder.

'20. ln a drilling apparatns a drilling tool,

15 and feeding means therefor comprising a normally stationary 1nember, =a;plurality of relatively movable elements eooperating simultaneous movement of saidelements or of either independently of the other re1ative to said stationarymember by fluid: pressure.

In testimony \vhereofI afiix my signature.

ELMER G. GAPTIN.