US2322866A - Mercury feeder - Google Patents

Description

`une 29, 1943. M. MERZ 2,322,866

MERCURY FEEDER VFiled May 5, 1941 INVENTOR MAX N11-'Rz ATTORN EY Patented June 29, 1943 MERCURY FEEDER Max Merz, Seattle, Wash., assigner to Mill & Mine Supply, Incorporated, Seattle, Wash., a corporation of Washington Application May 5, 1941, Serial No. 391,953

(Cl. 22h-lil?) 4 Claims.

This invention relates to improvements in devices known in the mining industry as mercury feeders, and it has reference more particularly to a mechanical means, designed to be used in connection with an amalgamator, or the like, for an accurate and controlled feeding of mercury into the amalgamator in accordance with the amount of gold or values in the material belng passed through the amalgamator.

It is the principal object of this invention to provide a mechanical mercury feeder, adapted to be driven by or in accordance with the rate of operation of the amalgamator, for a predeter# mined periodic dropping of definitely measured quantities of mercury into the amalgamator, and wherein an adjustment of the feeder valve is provided for in order to selectively change the volume of the quantities of mercury that are periodically dropped, thereby making it possible to feed the mercury to the amalgamator in accordance with the values in the treated material.

More specifically stated, the objects of the present invention reside in the provision of a mercury feeder wherein there is a rotary feed valve structure formed with a plurality of pockets of different sizes and selectively adjustable to cause any one of the pockets selected to pass, incident to rotation of the valve, across an outlet from a source `of supply of mercury to charge the pocket, then topass an outlet port through which the charge is discharged from the pocket to the amalgamator; the rotation of the valve being continuous and in `accordance with the rate of operation of the amalgamator for the periodic delivery of the mercury charges, and there being provision alsofor the easy selection of a pocket of a Volume to best suit the conditions, and for changing the speed of rotation of the valve.

Still further objects of the present invention are to be found in the details of construction, in the combination of parts and in the mode of peration of the device, as will hereinafter be more fully described.

`In accomplishing these and other objects of the invention, I have provided the improved details of construction, the preferred forms of which are illustrated in the accompanying drawing, whereini Fig. l is a side View of a mercury feeder embodied by the present invention; a part thereof being broken away for purpose of better illustration.

Fig. 2 is a cross `section taken on the line 2-2 in Eig. l, showing the device .in end elevation. Y

Fig. 3 is a horizontal sectional view on the line 3-3 in Fig. 1.

Fig. 4 is a cross sectional 4detail as seen on line 4 4 in Fig. 1, particularly showing the rotary valve and measuring pockets.

Fig. 5 is a cross section on line 5 5 in Fig. 1.

Referring more in detail to the drawing- I designates what preferably would be a cylin-v drical metallic housing for the measuring valve. This is horizontally disposed and provided on one side with a flat faced boss 2 for facilitating solid securement of the device to a supporting bracket such as has been designated by reference numeral 3 in Fig. 4; the securement being effected through the use of screws, or bolts 4, passed through the bracket and threaded into the boss.

While it is not absolutely essential, it is the intent that in the present instance the mercury feeder be supported through the mediacy of the bracket 3 from the frame structure which supports the amalgamator being fed with the mercury, and that the feeder shall be driven through any suitable connection with the rotating drum, or barrel, which is embodied in the amalgamator, or by a connection with the amalgamator driving means. However, since the particular driving connection of the feeder with the amalgamator forms no patentable part of the present invention, it has not been herein illustrated, except to the extent of those parts directly7 associated with the feeder.

The mercury container is supported upon the housing I. Preferably, the container comprises a cylindrical glass housing 5 that is held between upper and lower end cover plates 6 and "I, connected by a plurality of tie bolts 8 extended through and between the plates. The lower end plate 'I has a bottom boss 9 from which a mounting neck I0 extends. This neck is threaded into an opening I I formed through the top wall of thel housing to the interior thereof, and there is a Vertical feed channel I2 leading downwardly through the bottom plate of the container and neck I0. At its lower end, the neck seats against a sealing Washer I3 that seats against a rotary valve member, later to be described, and this washer has an opening or port I3 registering with passage I2 through which mercury may be fed to the valve member. Y

Suitable packing Washers would be used where necessary to insure against leakage of mercury from the container and through the connection of the neck I0 with the housing I. At the top 4of the container, the plate 6 would preferably be provided with a filling opening I4 to which a plug I4 is removably applied.

The cylindrical housing I is closed at one end by an integral wall I5 and is normally closed at its opposite end by a removable cover plate I6; the latter being secured in place by a plurality of bolts il applied therethrough as observed in Fig, 3.

Revolubly fitted in the cylindrical housing I is the feeder valve sleeve 20. This is closed at one end by an integral wall 2I from which a hub. 22 extends rotatably through the end wall I5 to the exterior of the housing l. Likewise, fitted for rotatable adjustment within the sleeve is a valve core 23 having a hub or journal 24 at one end extending rotatably through, and somewhat beyond the cover plate I6; the latter plate being formed with an extended bearing portion I6 rotatably containing the hub 24.

Extending coaxially through the assembled valve parts is a valve driving shaft 25, on one end of which a driving worm gear wheel 25 is fixed; this gear wheel being on that end of the shaft 25 that projects through and beyond the end wall l5 of housing l. At its other end, the shaft 25 has a circular disk 2l secured thereto by a set screw 2l passing through a hub portion of the disk. This disk, which serves a purpose presently to be disclosed more fully, liatly engages ie end of the hub journal 24 and thus holds the shaft 25 against longitudinal movement.

The valve sleeve 26 rotates with the shaft 25 by reasonci a fixed connection eifected by a pin 29 that is extended through the hub portion 22 of the sleeve 2li and through the shaft 25 as noted in Fig. 3.

The worm 32 is in driving mesh with a larger vworin gear 35 that is fixed on the lower end portion of a vertical shaft 36 revolubly mounted in spaced bracketbearings 31 and 38 that extend laterally from the housing I. On shaft 3S between the bearings 3l and 38 is a worm 39 in driving mesh with the worm gear 26. Thus, a reduction speed drive is provided between the driven shaft 3l and the shaft Z5 which rotates the feeder Valve.

Fixed on the extending end of shaft 3i beyond the worm gear 32 is a set of V-belt pulleys 43lt", in which a driven belt 4I may operate for the purpose of driving the feeder valve at three dilerent speeds.

Now, referring more particularly to Figs. 3 and 5, it will be observed that a collar l2 is xed about the outer end portion of the hub 2d of the valve core which extends beyond the bearing I5', by means of a set screw d3. A radial arm lll extends from this collar and this has a laterally turned outer end portion l5 overlying the periphery of the disk 2i' through which end portion a thumb screw iii is threaded. The inner end portion of the thumb screw is pointed for seating in any one of a plurality of sockets il formed in the disk edge as noted. in Fig. 5. In this instance, there are eight equally spaced sockets. Thus, with the understanding that the collar i2 is fixed to the hub portion 24 of the valve member 23, and that the valve sleeve 2E is fixed to shaft 25 by pin 29, it is apparent that by unseating the screw 45 and turning the collar 42 relative to the disk 2l, a corresponding rotative adjustment of the parts 23 and sleeve 25 will beacco'mplished.

Now, by referring to Figs. 3 and .4, it will be noted that the valve core 23 is formed thereabout With eight equally spaced radial sockets of progressively increased depth, which, by rotation of part 23 in part 20, may be successively brought into registration with a single port 5I that is formed in the sleeve 2l). Also, when a selected socket 5U has thus been registered with port 5I, the parts 25 and 23 may be xed against relative turning by tightening the thumb screw 46 into one of the sockets el in the disk 2i. In this connection it is to be understood that the sockets 41 are so located in the disk that when the set screw 4S is seated in any one of them, a socket 5l) will be accurately registered with the port 5I of the sleeve 25. Furthermore, the port 5I is so located in the sleeve that rotation of the sleeve will cause this port to pass the outlet port I3 from the mercury supply and then to pass an outlet port 55 at the under side of the housing I with which a delivery pipe or tube 56 is connected, and which tube delivers the mercury into the amalgamator by gravity flow.

In order that the operator may know just which of the sockets or pockets 50 is registered with the port 5I, the face of the disk 21 may be marked adjacent each pocket 4'Iwith a proper character or number. Then when the operator desires to make an adjustment of the feeder valve for the delivery of any particular volume of mercury to the amalgamator, he merely locates the set screw 46 in the socket 47 that is identified by the character or number designating that particular volume.

Assuming the device to be so constructed, and assuming that it is mounted properly for being driven by or in accordance with the rate of operation of an amalgamator, it is apparent that rotation of the shaft 3l will, through the mediacy of the gearing described and illustrated, cause the valve sleeve 20 to rotate, thus to cause its port 5I alternately to pass the port I3 and port 55. Assuming, then, that the operator has made a desired selection of the socket 5i) in the valve core with the port 5I, it can be understood that the mercury will feed into the pocket as the port 5I passes the opening I 3', and the mercury from the charged pocket will be delivered to the tube 56 when the pocket moves into registration with the outlet port 55. Y By reference to Fig. 4, it will be understood that any one of the eight pockets may be brought into'registration with the port 5I, and that each pocket will deliver a different amount of material than the others, and since these pockets are successively arranged vand progressively increased in size about the core, it is an easy matter for the operator to make the proper selection by reference to the characters or markings on the disk.

In addition to the three-speed pulley illustrated, it is contemplated that pulleys of different size might be employed to drive the belt and thus provide for an additional number of different speeds possible to drive the valve.

It is usually the case that mercury feeders of this kindare operated in accordance with a chart on which is disclosed amounts that will be fed when using any one of the eight pockets, and when operating the valve at any of the various speeds possible.

Feeders of this character have proven to be very satisfactory, very accurate and make possible the feeding of mercury to an amalgamator in accordance with the values that are contained in the material being passed through the amalgamator.

Iclaim: l

1. A feeder of the character described comprislng a valve housing formed at one side with an opening for the inow of a material to be fed and formed at another side with an opening for outflow of the material received through the first mentioned opening, a rotary valve in the housing comprising an outer sleeve formed with a single port, and a core member adjustably contained in the sleeve and formed with a plurality of pockets of different volume adapted to be selectively registered with the port of said sleeve, means for retaining the sleeve and core at any selected position of relative adjustment and means for rotating the valve whereby the sleeve port will be caused to pass in registration alternately with said openings of the valve housing, rst for charging the selected pocket with material and then for the outflow of the measured charge.

2. A feeder of the character described, comprising a valve housing formed at the top side with an opening for the inflow of material from a source of supply and formed at the bottom side with an opening for the outflow of the material received through the first opening, a rotary valve fitted in the housing and comprising an enclosing sleeve formed with a port adapted, on rotation of the valve, to alternately pass in registration with said housing openings, and a valve core rotatably adjustable in the sleeve and formed with i a. plurality of pockets of different volume adapted to be selectively registered with the sleeve port, a drive shaft coaxial of the sleeve and core and means on the shaft for securingthe sleeve and core thereon at any of their different positions of relative adjustment.

3. A feeder of the character described, comprising a valve housing formed at the top side with an opening for the inflow of material from a source of supply and formed at the bottom side with an opening for the outflow of the material received through the rst opening, a rotary valve fitted in the housing and comprising an enclosing the valve, to alternately pass in registration with said housing openings, and a valve core rotatably adjustable to the sleeve and formed with a plurality of pockets of different volume adapted to be selectively registered with the sleeve port, a drive shaft coaxial of the sleeve and core, means securing the sleeve xedly to the drive shaft, means for rotatably adjusting the core inside the sleeve, and means for locking the core against rotation on the shaft after being adjusted to any of the different positions of adjustment relative to the core.

4. A mercury feeder of the character described comprising a valve housing formed at its top side with an opening, a mercury container mounted on the valve housing for supplying mercury to the opening; said housing also having an opening at the bottom side and a tube connected with said opening for delivery of mercury to a, point of use, a drive shaft extended coaxially of the housing and rotatable therein, a rotary valve member tted in the housing and mounted on the shaft;

said valve member comprising an outer sleeve fixed on the shaft against relative rotation, and formed with a single port, a valve core revolubly fitted in the sleeve and rotatable on the shaft; said core being formed with a plurality of pockets of gradually increased volume adapted, by rotary adjustment of the core in the sleeve, to be selectively registered with the sleeve port, a disk fixed on the shaft and formed with sockets corresponding in spacing to the angular spacing of the core pockets, a turning arm for the core having means thereon for engaging in the disk sockets to secure the sleeve port in registration with a selected pocket of the core, and means for rotating the drive shaft to cause the sleeve port to pass alternately in registration with the housing openings `for charging the selected pocket of the core and sleeve formed with a port adapted, on rotation of for discharge of the measured charges.

MAX IVIERZ.

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