US1306106A - A corpora - Google Patents

Description

J DITSON.

DRILL STEEL PLNNING DEVICE.

APPLICATION FILED JUNE 30, I917.

Patented June 10, 1.919.

5 SHEETS-SHEET 1.

INVENTOH A TTOR/VEY no. NoRms PEYEIRS C0.PNO7w-Lu .vAsnlNGTON. u c.

J. DITSON.

DRILL STEEL PINNING DEVICE.

APPLICATION FILED 1UNE30. mm.

Patented June 10, 1919.

5 SHEETSSHEET 2.

In: NORRIS Psrsres ca. rum-04.1mm. WASHINGmN. n c.

J. DlTSON.

DRILL STEEL PINNING DEVICE.

APPLICATION FILED JUNE 30. 1911.

. 1 ,306, 1 O6, Patented June 1.0, 1919.

5 SHEETSSHEET 3.

IN VE/V 70/? AZZW A77 H/VEY 1. nnsom. DRILL STEEL PINNING DEVICE.

APPLICATION FILED JUNE 30,1917.

Patented June 10, 1919.

' 5 SHEETS-SHEET 4.

I/Vl/E/V TOR ATT RNEY 1 NORRIS Perms co.. Punw 4.11pm., WASHINGTON. n, c.

1. nnsoN. DRILL STEEL PINNING DEVICE.

APPLICATION FILED JUNE 30,19I7.

5 SHEETS-SHEET 5.

Patented June 10, 1919.

11 T ORA/EV ms mmms PETERS 50.. PN07U-LfrH( wnsmnarou. n. c.

JESSE DITSON, 0F LITTLETON, COLORADO, ASSIGNOR TO THE J. GEO. LEYNER ENGINEERING WORKS COMPANY, OF LITTLETON, COLORADO, A CORPORA- TION OF COLORADO.

DBILL-STEEL-PINNING DEVICE.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, JEssn DI'rsoN, a citizen of the United States, residing at Littleton, in the county of Arapahoe and State of Colorado, have invented a certain new and useful Improvement in Drill-Steel-Pinning Devices, of which the following is a specification.

The present invention relates to pinning out devices for rock drills and more in particular to one operated entirely by fluid pressure.

In the present day mining drills, it is usual to provide the drill steel and cutting bit with a central hole extending throughout its length for the purpose of supplying air under pressure, and water to the cutting edges of the tool to force the cuttings away from the cutting edges of the tool and also to prevent overheating and the formation of dust. In resharpening a drill bit having a central hole of the type above mentioned it is important that this hole is not allowed to become closed or clogged in any way. For this reason it has been difficult to re-sharpen a drill successfully and rapidly for the reason that the forming or sharpening dolly forces metal into the hole at each reciprocation and in order to clear the hole it has been the practice to force a pin into the hole after the bit has been sharpened by means of a heavy hammer and then forcing the pin out of the hole by means of a crude clamp and puller mounted adjacent to or forming a part of the sharpener.

The present invention comprises a machine which by means of fluid pressure holds a drill rod in position to be operated upon by a pin reciprocated forwardly and backwardly by means of a supply of fluid under ressure for the purpose of cleaning the hole after the drill has been re-sharpened. The holding or clamping means for the drill rod are so mounted that the drill rod is held in alinement with and adjacent to the fluid operated pinning out devise.

The objects of my invention are to improve the pinning out devices at present used; to operate them entirely by means of fluid pressure; and to facilitate and expedite the pinning out of newly sharpened or re-sharpened rock drills.

With these and other objects in view my invention consists in the features of construction and operation set forth in the following specification.

In the drawings annexed hereto and forming a part hereof,

Figure 1 shows a front view of the complete machine made in accordance with the present invention;

Fig. 2, a side view of the upper portion of the machine partly in section;

Fig. 3, another side View of the upper portion of the machine viewed from the opposite side to Fig. 2;

Fig. 4-, a front view of portions of the invention, parts being shown in section;

Fig. 5, a rear View of portions of the machine;

Fig. 6, a section on the line 5-5 of Fig. 2;

Fig. 7, a section on the line 77 of Fig. 6.

Referring more particularly to the drawings, 1 represents the base upon whichthe working members of the machine are mounted. This obviously may be of any convenient form. The base 1 is flanged at its upper edge 2 to which a casting forming the body member of the machine 3 flanged at its lower edge or surface 1, is fastened by means of stud bolts 5. The body member 3 I,

Patented June 10, 1919.

is formed on one side with alarge cylinder 6 g I in which a piston 7 reciprocates. The piston 7 carries a pin 8 which extends forwardly from the piston 7 and passes out from the cylinder 6 through a stuffing box 9. Extending rearwardly from the piston 7 is an eX-' tension arm or rod 10 having a hole 11 bored therethrough and abutting the end of pin 8 is a distance piece (not shown) by means of which the pin 8 may be held firmly in position. The hole 11 is closed at the extreme end of the arm or extension 10 by means of a cap 12 and the cylinder 6 is further provided with a stuffing box 13 through which the arm 10 passes.

To operate the piston 7 and consequently the pin 8 forwardly and rearwardly by means of fluid pressure, fluid under pressure is admitted through supply pipe 14 to a valve chest 15 in which operates a valve 16 provided with two spaced heads 17 and leading from the valve chest 15 to either end of the cylinder 6 is a conduit 18. It will be either side of the ports 18 that fluid will be alternately supplied on either side of the piston? thus InOVing the piston and in 8 forwardly and rearwardly. Ports l9 eading from the valve chest 15 are provided to exhaust the fluid from either end of the cylinder 6. The lever for moving the valve 16 and thus controlling the operation of the piston 7 will be described later.

- Mounted upon the opposite side of the body member 3 to that of cylinder 6 is another cylinder 20 of smaller diameter. Within cylinder 20 is a piston 21 to which is-attached a piston rod 22 extending forwardly from the piston 21 through stuffing boX 23. The forward portion of the piston rod 22 is formed into a rack 24 for a purpose presently to be described. In order to operate the piston 21 in cylinder 2.0, fluid pressure is admitted through a conduit .25 into a valve chest in which operates a valve-26.

The operationof valve 26 to admit and eX- haust fluidpressure from either-end of cylinder 20 and to force the piston v2,1 forwardly and backwardly is similar in every wayto the operation of valve 16 controllingthe movements .of piston 7 which havealready been described :and further description .of valve 26 is thought to be unnecessary.

Extending forwardly from thebody member 3 is a'bracket member 27 attached there to by means of .studs or bolts 28. This 7 bracket member 27 is provided with a central bearing section "29 :in which rests the central portion of a cross shaft 30 provided with two screwthreaded portions .31 and 32, respectively, right and left threaded, and mounted near one .end 'of-the cross shaft 30 isa pinion .33 sliding .over a key 34 fastened into the shaft 30. The pinion is provided with anextension 35 within which is contained a compressive spring 36 held in place by means of a washer 37 and nut 38 on the end of shaft 30. Against the opposite side of pinion 33is located a collar- 39 fastened to the shaft in any, adjustable position by means of a screw 40. It will be seen from this construction that a slight amount of' movement of the pinion 33 alongthe shaft 30 is permitted. Engaging the screw threaded portions 31 .and 32 of the shaft 30 are the jaw members of a vise, respectively, 41 and 42, which are moved toward or away from each other in accordance with the rotation of the pinion '33 and shaft 30. As

' has been before described, the piston rod 22 controlling .the movements ofthe jaw members41 and 42 and the reciprocator-y pin 8, a lever of special construction has been devised. This is best shown in Fig. 7. The valves 16 and "26 are each provided with extensions 43 and 44, respectively, and in these extensions 43 and 44grooves 45 and 51 are cut to cooperate with parts of the lever presently to be described. The groove 45 formed ineXtension 44 cooperates with the outer edge of a cam plate 46 which is formed with a stud member upon one side 47 which is rotatably mounted in the frame of the body member 3. From this construction it will be evident that as the cam plate 46 and stud member 47 are rotated the valve 26 will be moved forwardly and backwardly due to the obliquity of the cam 46, thus operating the piston 21 and consequently forc irlig the jaw members 41 and .42toopen and c ose.

Pivotally mounted upon the cam plate and stud member 47 and in alinement with the stud member 47 is a lever 48 terminating in a suitable handle portion 49. The lever 48 carries a projection 50 which fits into, the groove '51 formed in.extension 43. As

shown in 7, the :lever'48 andcamplate 46 .are so oined that the lever mayjmove in any direction as it isifree to pivot about tlonary. To confine the movements of lever 48 to those which will allow-but one valve to beoperated at a time, a guide :53 is provided shown mostclearlyin Fig. '2. As shown in this figure the guide 53 comprises a yoke having an inverted T-shaped slot v54 adapted to fit'closely to the lever 48. -When the lever 48 is moved vertically within the vertical slot 55 of the T-shaped slot 54 the valve .26 is operated to move the piston 21 to close the jaw'members 41 and 42 and when the lever 48 is operated horizontally in thehorizontal slot-.56 the valve 16 is .op.er-

ated thus moving the pin 8 forwardly-and backwardly through the movements of the piston 7. To return the lever 48 to-the upper end of the slot 55,, ,a ,spning1'57 .isat

tached to the'lever 48, which holds the lever in its starting position. For vCon venience in holding the drill to be pinned out in position .a drill stop 58 is provided which is adjustable as shown in Fig. 2'by means of a rod 59 and setscrew 60.

'Whi'le the operation of my device maybe obviousfrom the above, a-short description of the method of operation will be given. Starting with the parts as shown in the figures, the lever 48 is ffir'stim'oved downwardly through the vertical slot55 oflt-he guide 53 which has the efiect of operating the valve 26 to move it rearwardly to admit fluid under pressure to the cylinder 20 in rear of the piston 21, thus forcing it forwardly. The forward movement of the piston 21 has the effect of forcing the rack 24 forwardly, thus rotating the pinion gear 33 and forcing the jaw members 41 and 42 together tightly about a drill rod, either before or after it is sharpened, and inserted between the jaw members 41 and 42 of the vise. The lever 48 is then operated forwardly and rearwardly in the horizontal slot 56 of the guide 53 which reciprocates the valve 16 and consequently the piston 7 and pin 8 attached thereto. The movement of the pin 8 is with such force that it will be forced into the central hole of a drill rod, thus clearing it of any metal which has been forced into it during the sharpening or shanking operation. The thrusting of the pin 8 forwardly may be repeated a number of times or until the hole in the drill rod has been completely cleared. Upon returning the lever to the upper end of the slot 55 in the guide 53 both valves 16 and 26 are returned to their closed or central position, thus forcingthe piston 21 rearWardly and opening the jaw members 41 and 42.

It is to be understood that while the present showing and description disclose only one specific embodiment of the present invention, other forms and modifications are included within the spirit and scope thereof, as expressed in the appended claims.

What I claim is:

1. In 'a fluid operated pinning out device for rock drills, a vise having jaw members, a piston operating the members of said vise,

an independent piston operating a pin,.a lever, and means whereby the lever may be moved first in one direction and then in another for controlling the movements of both pistons.

2. In a fluid operated pinning out device for rock drills, a vise having jaw members, a piston operating the jaw members of said vise, an independent piston operating a re ciprocatory pin and a lever mounted to move first in one direction and then in another, a guide to limit the movements of the lever whereby the vise members may be closed about a drill rod, the pin then operated forwardly and rearwardly and then the vise members re-opened.

3. In a fluid operated vise for pinning out devices, a cylinder, a piston within said cylinder, a rack attached to and operated by said piston, vise jaw members mounted upon a shaft, rotation of said shaft 0 crating said jaw members, and connections etween said rack and shaft wherebv movement of said piston will operate said jaw members.

4. In a fluid operated vise for pinning out devices, a cylinder, a piston within said cylinder, a rack attached to and operated by said piston, vise jaw members mounted to slide towardand away from each other, a rotating shaft having left and right handed threaded portions engaging said jaw members, and a gear mounted on said shaft and meshing with said rack so that movement of said piston controls the movement of said jaw members.

In testimony whereof, I have hereunto set no hand.

y JESSE DITSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G.

Images