US1163246A

US1163246A - Grinder.

Info

Publication number: US1163246A
Application number: US1774215A
Authority: US
Inventors: Alexander J Mccone
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-03-29
Filing date: 1915-03-29
Publication date: 1915-12-07
Anticipated expiration: 1932-12-07

Description

A. J. McC ONE. GRINDER.

APPLICATION FILED MAR. 29. I915.

1,163,246. I Patented Dec. 7, 1915.

3 SHEETSSHEET 1- l/VVE/VTOR 7: Mfhdw a "3w, 3. m BY ky A TTOR/VEV A. J. McCONE.

GRINDER.

APPLICATION FILED MAR. 29. I915.

1,163,246. Patented Dec. 7, 1915.

3 SHEETS-SHEET 2- A TTUR/VEY IIOLUMBIA PLANOGRAPH co" WASHINGTON. D. c

A. J. McCONE.

GRINDER.

APPLICATION HLED MAR. 29, 1915.

1,163,246. I Patented Dec. 7, 1915.

3 SHEETS-SHEET 3.

COLUMBIA PLANOGRAI'H co, 'wAsmxc-ros r4 @FTQFZ.

ALEXANDER J. MCCONE, DE LOS ANGELES, CALIFORNIA.

GRINDER.

To all whom it may concern: I

Be it known that I, ALEXANDER J. Mo- CONE, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Grinders, of which the following is a specification. My invention relates to that class of grinder in which the shoe or wearing face of a rotating grinding member is held against the die or wearing face of a non-rotating grinding member, the material being fed in the axis of one ofsaid members and thence passing outwardly between the wearing rotating member.

To this end my invention consists in the novel grinder which I shall hereinafter fully describe, by reference to the accompanying drawings in which Figure 1 is an elevation, partly in section, of the grinder. Fig. l is a sectional elevation, enlarged, of theupper end of the piston rod 36 showing its fluid-pressure connections. Fig. 2 is a top plan of the grinder. Fig. 3'is a section'on the line w e of Fig. 1.

Fig. 4 is a section on the line ;z of Fig. 1,

parts being brokenaway. Fig. 5 is a plan view, enlargechshowing the support 33 on the column for the push lever 32. Fig. 6 1s a side view of the same. F ig. 7 is aview,

enlarged, of the eccentric ball connection to adjust the v non-rotary grinding member. Fig. 8 is a perspective view of a portion, broken, of the wearing shoe 8. I t

1 is a base from which rises a column 2 having a. horizontal arm 3 carrying a bearing 4 in which is mounted the'vertical driving shaft 5. The lower portion of the shaft 5 carries a driving pulley 5 and the foot of said shaft is carriedin a step 6 on the base 1. To the head of said shaft is fixed the rotating grinding member 7, which is p e.

Specification of Letters Patent.

[other Patented Dec. 7, 1915.

Application filed March 29, 1915. Serial No. 17,742.

vided with an annular wearing shoe 8, said shoe being here shown as being of the deeply serrated form known in this type of mill, andsecured firmly by means of a boss 9 of each tongue portion fitting in a socket in the grinding member and bolted therein as shown at 10.

Above the rotating grinding member is the non-rotating grinding member 11, the middle of which is formed with a feed hopper 12, having spaced arms 13. The member 11 is provided with a wearing die 14-,

similar to the wearing shoe 8 of the rotating member 7 and similarly secured.

Carried by a bracket 15 on the column 2 is a launder 16 which encircles the periphery of the grinding members and is provided with a drain 1'? to conduct the ground material to the classifier, or copper-platesor destination. The upper grinding member 11 is kept from rotating by suitable means, here shown as a chain 2 connecting it with the column 2. v

The mill, thus far described, is, in general, a well known typeof grinder, in which the material is fed through the hopper 12 of 1 the upper or non-rotating member, and, un-

der its hydrostatic head and centrifugal force is compelled to pass outwardly between the shoe and die of the grinding mem- In this type of bers andinto the launder. grinders, it is essential to provide for varying or changing the relative position of the grinding members in the plane of their wearing faces, in order to prevent the grooving or scoring of their shoes and dies and to cause these latter to wear and to remain level, fair and ungrooved; and it is also essential to apply pressure to drive and hold the wearing faces of the grinding members together, said pressure being usually applied to the upper or non-rotating member. It is in these essentials that my improvements consist, and I carry them out by an automatic adjustment of the non-rotating member relatively to the rotat ng member in the plane of their wearing faces, and by fluidpressure constantly applied to sand non-r0- tating member, the means by which the two results are effected being sufiiciently intimately associated to enable them to perform their functions simultaneously without interference.

The hopperarms 13 of the upper grinding member carry a central socket 18, fitted with a lQ IlQVable section 18 to admit the 3 ball 19, carried eccentrically upon the lower end of a shaft 20. The upper end of the shaft 20 is secured to a piston 21, which operates within a cylinder 22, said cylinder having a neck 23 which is mounted rotatab-ly in the upper end of the column 2 upon the seats 24. The shaft 20 has lineal movement in the cylinder neck 23 but is keyed therein at 20 against independent axial movement, so that the movement of the cylinder on its axis carries the shaft with it. It will, therefore, be seen that when cylinder 22 is moved on its axis, the shaft 20 being carried with it, will, through its eccentrical-ly mounted ball 19 shift the upper grinding member horizontally relatively to the lowergrinding member, the chain connection 2 permitting this adjustment. New, to provide for a relatively slow automatic adjustment of this character, I have on the lower portion of the driving shaft 5 a worm- 25 which meshes with a worm gear 26 on a horizontal countershaft 27 carried by the foot of the column 2.

The other end of the countershaft 27 carries a worm 28 which meshes with a worm gear 29 on a vertical shaft 30, carried by the column 2. The upper end of the vertical shaft 30 carries an eccentric 31, to which is fitted by one end a push lever 32,, guided at 33 on the column 2. The other end of the lever 32, carries a pawl 3a which engages a ratchet 35 on the cylinder 22. Though the time of the adjustment of the upper grinding member may be varied, I have found in practice that a cycle of movement once in four to siX minutes is beneficial, the rotating member rev-olwi-ng 200 to the minute.

The fluid pressure on the upper grinding member is effected through the piston 21 to which the upper end of the shaft 20 is secured. This piston carries an. upwardly eX- tending rod 36, which passes out through the upper end of the cylinder. The rod 36 is formed or drilled with two longitudinal ports, one of which, designated by 37, communicates with the cylinder above the piston, and the other, marked 38, communicates with the space below the piston. The upper end of the rod 36 is fitted with a bearing cap 39 having a connection 40 for a flexible pipe 4-1. This connection communicates with the port 37 in the rod 36. The bearing cap 39 has another connection 42 for a flexible pipe 43, said connection communicating with the port 38 in the rod. The twoflexible pipes 41 and 43 unite in a common pipe A controlled by a fourway cock. 45. Fluid pressure being admitted to port 37 will drive the piston down, the pressure-under the piston relieving through port- 38. Thus the required pressure may be had to drive and hold the grinding members together, and this may be kept constant without any further attention or adjustment. This same pressure arrangement is made also to serve the purpose of directly lifting the upper grinding member of the mill when necessary. This is efiected by the operation of the four way cook 45 admitting pressure to the port 38' and relieving through the port 37 1. In a grinder, the combination of a rotatable grinding member and driving shaft therefor; an opposing non-rotatable grinding member, each member having a wearing face; and means for universally adjusting the non-rotatable member relatively to the rotatable member comprising an axially turnable and longitudinally slida-bleshaft, a universal eccentric connection between said shaft and the nonrotatable member, and means for automatically imparting movement to the turna-ble and sliidableshaft.

2. In a grinder, the combination of a rotatable grinding member and driving shaft therefor; an opposing non-rotatable grinding member, each member having a wearing face, and means for universally adjusting the non-rotatable member relatively to the rotatable member comprising a rotatable and slid-able shaft having a ball eccentrically mounted upon one end, a, socket the axis of the non-rotatable member, in which the V ball is universally mounted, power transmitting connections from the driving shaft of the rotatable member to rotate the eccentric. shaft, and means. for imparting l-ongitudinal movement to said eccentric shaft.

3 grinder, thev combination; ofa rotatable grinding member and drivingshaft therefor; an opposing IlOllrlOliBitElblG grinding member, each member having a wearing face, and? means for universally adjusting the non rotatable member relatively to the rotatable member comprising a rotatable and slidable shaft having a ball eccentrically mounted upon one end, a socket in the axis of the non-rotatable member, for universal engagement with said ball, and power transmittin-g connections from, the driving;- shaft of the. rotatable member to rotate the eccentric shaft, said, power transmitting connections including gears and shafts, a push; lever, eccentric appliedto one end of the e e and a paw and r tchet device between the other end; of the leverand said turnable shaft, andv means for imparting longitudinal movement to said eccentric; shaft.

4. In, a grinder, the combinationof a rotatable; grinding member and; driving shaft therefor; an opposing HQHf-I'Oil'lliib'blQ grinding; member, each member having a wearing surface means for universally adijusting; the; non-rotatable member relatively to tharota-tablfl member comprising an axially turua eand longitud nally sliidable shaft, a universal eccentric connection between said shatt the nona ablemember, power transmitting connections from. the driving shaft of the rotatable member to rotate the eccentric shaft, and fluid-pressure means for imparting longitudinal movement to said eccentric shaft.

5. In a grinder, the combination of a rotatable grinding member and driving shaft therefor; an opposing non-rotatable grinding member, each member having a wearing surface; and means for universally adjusting the non-rotatable member relatively to the rotatable member comprising an axially turnable and longitudinally slidable shaft, having a ball eccentrically mounted upon one end, a socketin the axis of the non-rotatable member adapted to universally engage said ball, power transmitting connections from the driving shaft of the rotatable member to rotate the eccentric shaft, and fluidpressure means for imparting longitudinal movement to said eccentric shaft.

6. In a grinder, the combination of a rotatable grinding member; an opposing nonrotatable grinding member movable to and from the rotatable member and also movable with relation to the rotatable member in the plane of the grinding faces of said members; an axially turnable and lineally movable shaft having an eccentric connection with the non-rotatable member; a piston on said shaft; an axially turnable cylinder in which said piston operates, said cylinder and shaft being locked together for simultaneous axial movement; means for turning the cylinder on its axis; and controllable fluid connections to move the piston in either direction.

7 In a grinder, the combination of arota-table grinding member, and driving shaft therefor; an opposing non-rotatable grinding member movable to and from the rotatable member and also movable with relation to the rotatable member in the plane of the grinding faces of said members; an axially turnable and lineally movable shaft having an eccentric connection with the nonrotatable member; a piston on said shaft; an axially turnable cylinder in which said piston operates, said cylinder and shaft being locked together for simultaneous axial movement; power transmitting connections from the driving shaft of the rotatable member to rotate the cylinder; and controllable fluid-connections to move the piston in either direction.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALEXANDER J MGCONE.

Witnesses WM. F. BOOTH, D. B. RICHARDS.

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