US1225159A - Stabilized movable bottom for jiggers. - Google Patents

Description

H. l. MOYER.

STABHLIZED MOVABLE BOTTOM FOR HGGERS.

Patented May 8, 1917 3 SHEETS-SHEET 1 APPUCAHON FILED NOV-15. I915- om n 2 5 k m t.

l R 2! m Mm MN 1 @Jvwomtoz H. J. MOYER. TAB|L|ZED MOVABLE BOTTOM FOR JIGGEBS. I 'w 1,225,159; Ptented May 8,1917.

3 SHEETS-SHEET 2 APPLICATION HLED NOV. 15. I915.

mumnl H. J. MOYER. VSTABILIZIEDYMOVABLE BOTTOM FOR JIGGERS.

APPLICATION FILED'NO. 15. l9l 5- Patented May 8, 1917.

a sun's-swim 3.

'IIlIIIII/A I III .451 tom or seotionjthreof which sta capable of adjustment tel-permit pre term quickoscillation. of the movable part i HARRY I. MOYEB, OF PHILADELPHIA, PENNSfLVANI-A.

STABILIZED MOVABLE BOTTOM FOB JIGGER8..

Specification of Letters Patent.

' Patented May 8, 1917.

Application filed November 15, 1916. Serial No. 61,487.

To all whom it may concern:

Be it known that I, HARRY J. Moron, a citizen of the United States, residing at 1516 Wingohocking street, Philade hia, in the 5 county of Philadelphia. ends to of Penn sylvania, have invented a "ertiiinnew and useful Stabilized Movable Bottom for J iggers, of which the following is a. specification. r My invention relates to jiggers for separating the slate from coal which use a fixed jigger box and produce pulsations of water through the box and contents by a. plunger. The purpose of my invention is to make the bottom of the box or a portion thereof movable with respect to the box, preferably in inverse proportion to the load upon the bottom orsection, and to stabilize the bot tom or section against undesirable movement in either direction.

A further purpose of my invention is to .1 "counterbalance ,a. movable box bottom or section thereof by means which counters. balances diflerent weights at difi'erent heights and to proportion the flow of slate from the bottom by the height ofthe bottom or section. I p

A further purpose of my invention is to provide emova blebott-om sectiowheving a, steeper slope than the fixed portion of the jigg'er box bottom,

A further urpose of my i Iv I vention is to provide for sight vertical play of a bodily movable counterbalanced box bottom or se c tion while retarding edditiontil verticel movement. 1

LA- iurther'purpose of my invo ution is to,

provide verticellymovable closures for the slate outlet of a jigger box which will yield ".40 locally when unobstriiction isjceught be- 's tween' theclosure and-a enable boxt bot-f "tom-or section thereon." A further urpose o fgmyinvention is to provide esta ilizer for a 'movablekp bot- \11 i1 (lto. rota-rd further movement there either direction.

provide for exterior edjus out of the ate of movement. permitted'fb: e stabilizer pnneetedwith a. movable ji- "'er box jigger ox bottom orsectionthereb 5-5 A further purposeof 3 inventi separate the parts of a e os'ure fore iigger A further purpose of my: invention" to l to.

slate outlet making the parts separate and separately operative so as to permit full closure ofsome parts when others are open.

Further urposes will. a pear in the specification on claims hereotl I have preferred to illustrate my invention by'but a few of the verious forms in which it may be'utilized, selectin forms which are practical, eflicient and relatlvely inexpensive, which can easily be applied to existing jig-- gers and which at the some time well llllls' trnte the principles of my invention.

Figure 1 is a transverse vertical section through a jigger illustrating my invention.

Figs. 2 and 3 are sections of details of Fig. 1, taken parallel to that figure.

Fig. 4 is a section corresponding to Fig. 1 but showing a second forrncf my invention. 1 e

. Fig. 5 is a broken end elevation of the structure oLFig. 1, omitting some of the parts.

Figs. 6 and 7 are. partial sections corresponding in'position to Fig. 1 but showing "other constructions.

Figs. 8 and 9 are broken sections at right form. Figs. 10 end 11 are sections in elevation and perspective, respectively, showing modified gate structure.

Similar numerals of reference indicate like parts.

This application is a continuation as to common subject matter of an ap )lication filed by me August 21, 1915; Serial 0. 46,667

I hingles to each other showing another modi A for to movable bottom screen ;j1ggcr, from hich have been teken :Jcleims specific to t e box with movable bottom Iand sepa-' r1 1 plonger.

- inventionrelates to the feeding of coel and is directed to the counterbolancingof; a movable jig er ,box"'-b.ottom or. section 1 0 thereof and to sta ili-zetion of. the section at whatever-height,iso ferns may-be desired,

preventing sudden movement of the bottom- .orsection from weter'impiulse or weight of r the contents or -lixnitin the; .sudden moveri-ienttothat which is" esired, et the same time permitting gradual 1 change of height of the bottom or section in inverse proportion to the volume of slate-present.

Taking up;first'-theshow1ng"in Fig. 15-

. The tank 1 contains the witter in' which the jigger boxzis. tolbedmmersed, to some such level as 2, above the reciprocable plungei- 3. This plunger operates in' any convenient SMICQ set oil by a bafile or wall 4, so that the water impulses produced shall be applied to the perforated bottom 5 ot the jigger box ll rather than to the sides of the box.

At the front of the tank. I provide casings or boots 7 and 8, in operative position to receive the discharges of coal and slate rospeotivel v". Within these rasings conveyors 9 and 1.0 travel for the purpose of continuously removing the separated coal 11 and slate 12, which are received unseparated through. a chute from any pocket, such as; 13, or other storage o supply.

The ohute delivers the mixed coal and slate to the jiggei' box behind a batlle, su h- 14-, adj ustabll; spaced from the bottom oi? the box. as by rlosure 15 moved by rod 16 and adjusting mechanism 12.

As in well. lmown, the in'ipulses given by the plunger are transmitted to the ElllXml and slate; the rain" n r of whose speoifii- .r'ities 'agguiwm-al by allege-um!of both in the watviu is each impulse is up], t riving!) the porlol'utml bot tom the mi). ,l and slate are lifted and subside, rearrmigmigi; in :urordamre. writh their subsidence values with the road on top in position to pour over the mouth 18, and

has been E 1,.

the slate progressively sle'niening toward thefront along the sloping bottom, and having its outlet at the low r front of the bot lonn, The greater hull; of the slate causes eater total weight upon the entire bottom and theprogressive increase. in slate depth. vausus correspomlingi nrreas'e'in the pressure upon underlying pairs of the botton'i. The balile 19 previously" in use to relieve against rrowding 0'? Goal down into the slate outlet does not arleot the general distribution of the coal and slate, but does retard lhe lifting oi; the slate close to the outlet.

\Vith the jiggers at present ingeneral use the operator.

- ps" the slate. at inteiwals, when. .he thinks that it has accumulated in suilioiont quantity. Undue delay cans/cs slate to be passedout rit'h. the Coal, injures .the quality of the coal'mid often requires rejigging of the oondeinned coal, expensive alike because of the re liandling and of the brealnige of coal. Undue tapping (arises wasteoi Foul wlrieh passes out through tluv slateoutlet.

liven when at its best, intermittenttapping of the slate is ol 'iiirtional'ile for one other reasons. Yra-jarity of the Iii tiller is llll'lltEtlbylilln..illlil'mll'lj of slate' whioh it .will hold before it istapped. The slate lfillb rover is notoperi'dxwl esoiioiuioally.

bark is but slightly affected, disturlliing the normal distribution of the slate in which its Ever-r} time. sla-to'ista'ppiul the depth ofslute'. at thefront is greatly reduced while that l"z'1rth er (intent, relatively, than coal further our before a body Off slate can be accumulated again at the front. This loses part of the time of operation of the jigger before the r rrangement of the coal and slate is elliieted. -'Vari ous efforts ha re been made to utilize the pressure upon a section of the bottom, andin one case upon the entire bottom to more the section or bottom in an effort to discharge the slate regularly and automatically. These have failed for a number of reasons, among whirb mig; abseme oi any stabil zer for taking the thrust due to the reciprorations of the plunger and the fall of the box content between water impulses, the lark of suitable volmtrrweightin for the movable section or bottom to equalize different weights at different heights, inoperative outlets wit-bin whit-h the slate is caught. preventing free movement, and the larl; of ottectire retardation of moromentiu either direction by reason of rhange in weight w T he result has been that the mo able sections orbottoms ha re fluttered with the pul- Sations'of the plunger, following up the coal and, slate and interfering with the separation. The sections have dropped rapidly as soon as the counterweight value was exneeded and have allowed a sudden disrharge of slate, disturbing the slate dist-rilu tion.

'1t be stated, the

Except t-liey' ing' coal out along with the slate, they. have v Lmen opento all of the objections as to intermittent character existing with hand operation. i

I prefer that the quite'elosed when the movable bottom-0r section is at its highest position, leaving: a

space 20 about the width of the eoal-'wl':-.olr

is being jigged. I

.l'usteai'l of an integral door, such as might be used with my in ention to some advantune, in this illustration I form the door of r15 slate outlet should not be.

sort-ions which-more separately and prefvrably' ierti ally. These sections 21 are shown as weighted at 22, moving between sides 23' of a channel whioh guides andsup ports the strips. The channel. is vertically adjustable upon the bar 24 and is held in place by screws ,25 assing throughslot-sifi The sections may be made in the form of separate strips or in groups, if desired.

.Each strip or group may thusclose to its full extent even though other strips or groups be lifted by engagement with outgoing slate, coal resting between it and the movable screen of the box bottom in the upward travel of the screen.

-In Fig. 1 the greater part of the perforated bottom is fixed. A ortion of the front, as at 2 is made mova le and is preferably lifted and lowered bodily, as in this figure and Figs. 4,;5 and 9, rather than swung, as in Figs. 6 and 7. 'The angle of slope is shown as greater for this section 27 than for the remaining portion of the bottom 5.

The movable section is guided by a flange 28 upon the adjoining, fixed portion of the bottom aiid'by a flange 29 upon the under side of the forward edgeof the section, as well as by the ends of the tank or box. This flange 29 closes the lower part of the outlet against undue leakage of pulsatin water into the lower boot, confining the pu sations to' the tank so as to make them effective upon the bottom of the box.

The section 27 is supported by a plurality of rods 30, here shown as three in number,

which may be unprotected, as in Figs. 4, 5, 8 and!) or may be movable within fixed protecting tubes 31 whose bottom edges are covered by surrounding tubes 32 which are movable with the section 27. The tubes greatly reducefriction. with the coal and, wedging of the coal and protect the rod from wear.

The rods 30 are connected with the counter-weighted frame 33, through which the section as shown is supported. The ends 01' the frame are provided with pairs of ears 34 in which pins 35 are seemed so as to be engaged by the forked ends 36 of counterweightlever arms 37. The arms are 1voted on pins 38 fixed to the tank casing. The counterweighting is split up for conveniencein' adjustment into two parts shown by weights 39 and 40 held in their adjusted position along the lever arms by screws 41 and 42. i

It will be evident that the effective distance from the counterweighting to the pivot pin 38 will vary according 'to the harmonic law as the lever arm 37 turns, but that the efl'ective distance from the load-supporting pin .35 to the pivot pin 38 will be substantially constant, with the result that, as the outer end of the lever arm in Figs. 1 and 3, carrying the counterweights, moves downwardly. from the position there shown, it will be equalized by successively decreasing loads of combined coal and slate bearing upon the section The. movable section will therefore come to rest at different heights with different combined coal and slate. loads upon it, lowering toa new position of equilibrium tion in the rate'of slate flow.

bdttom .which is thus made to follow the coal for a excessive fluttering of the section or slate in the box upward undesirably, Wing the mass in compact form and not a1 wing room for the loosening of the mass and subsequent redistribution during the set tling-upjon ration y jigging depends. ause the pulsations follow each other in,.,,too rapid succession for the section or bottom to dro to its true counterpoised position between t ese pulsations, they have another effect in lifting the section or bottom to a greater height than that at which it should counterbalance with the weight upon it. This tendency to lift the bottom abnormally can, however be taken care of in the countcrwei'ghtingif It be freed from excessive fluctuation.

In order to receive the thrust of the ulsations as well as'support the section or ottom against the impact of the mass of slate and coal when it drops upon the section or bottom between pulsations, Iapply a damwhich the whole rocess of sepaper toits movements which I prefer to call by the general' term stabilizer and to illussection or bottom of the box fromone si tion of equilibrium to another Either as supplemental toor instead of theopening 47 or between the two on s'of thecylinder 43, I

with varia- V form an outside connection 48, valved at 49,-:

so that the rate of flown may be adjusted to provide for difl'er'ent rates of speed, of rise andfall of section27, under theweight or pressure conditions telwhich it'may be subsigner or operator ma be accommodated.

Some users, particul rly in jigging larger sizes of coal, ,desire a certainamount of movement of-the bottom or section with each pulsation, upon the theory that itjhelps feed the slate, though they do not wish to 'ected 'so that special circumstances of intended operation or preferences of the de- 25 1 have the extent f, movement which the pulsations'would. caiire in a bottom or section which is not retarded. This limited movement or play can be provided in connection with the stabilizer already described by notfilling the cylinder fully with fluid or, with a cylinder already filled, providing a discharge outlet for fluid at 50 so that a portion of the fluid may be drawn off, if desired, in order that a. predetermined amount of free motion or vertical play may be given the section 27 in each direction before the stabilizer becomes effective.

By the pipes 51, 52, valved at 53, 54, 1 provide for a column of oil. or other suitable fluid to bring pressure upon the volume of corresponding fluid within the cylinder where no lost motion is to be provided for the section 27, so as to reduce or eliminate bubbles and gain the full advantage of sensitive connectionbetween the section or bottom and the stabilizer. These pipes provide convenient means for filling in the oil where lost motion for section 27 has been provided and it is subsequently desired to reduce or eliminate.

I provide a lever for the purpose of lifting the section or bottom to a high position, without regard to the proportion of slate to coal in the box, when the jigging operation is begun in order that there may be no discharge through the slate outlet until there has been; time for the slate and coal to be somewhat separated and to form a suflicient slate layer'on the bottom. I purpose using the same lever to hold the section or bottom down, to keep the slate outlet open as I long as may bt necessary whcn'cleaning out the bottom of the jigger.

Because of the relatively small weight upon the section which moves in Fig. 1, I have not considered it necessary to supply a separate lever for either purpose there but utilize one or both of the levers 37 instead. a

In the forms shown inFigs. 6" and 7 I have illustrated two hinged-bottom constructions to which my stabilizer is intended to be aplied. They are also intended to be coun erweighted to reach equilibrium at different heights for different weights. The sect-ions 27, 27', Figs? and 7 are hinged at 55,551 and. are provided with curved flanges 21), at their front edges. The dwrsgand casing edges may be similarly curved. Because the section and bottom swing. the rods 30', 30 are'pivoted to the movable grid parts as at 56, 56. The extentof lateral movement required of the rod in the showing, Figs. 6. slight. Ordinarily, it would not. necessitate a pivot in the rod. Such a pivotal connection of rod parts is shown just below the frame at. 57 in Fig. 7

because a part only, 27, of the entire tom swings and the amount of lateral movement required of therod would be considerable.

In operation, the jigger box is allowed to 7 till from the storage supply and the section vor bottom is raised and retained in raised position by the lever for that purpose until sufficient bed of slate has accumulated,

. which may be determined readily by a little of the action of the stabilizer, but the movement toward this position will be constant until it is reached. At this position the slate will work progressively out of the slate outlet, moving steadily from the back to the front and maintaining almost the same position and shape of upper contour throughout the operation upon coal and slate of the same proportions and specific gravities, changing with change in either of these. Should the proportion of slate accumulated at the start be in excess of the proportion for which the box is normally intended in constant operation, the box may move slightly below its normal position and back thereto before balance is eflectcd.

In Figs. .L and. 5 the construction is of the same general character as shown in Fig. 1. However, the rod 30 is not there shown as protected, the bypass for the stabilizer is not applied, the section 27 slopes the sameas the remainder of the bottom, and a different character ofdoor and door closure are seen. i

Whereas the door in Fig. 1 is vertically movable and wholly independent of the compensating lever arms, the door 58 in Figs. 4 and 5 is hinged, as in Figs. 6 and 7 about some such rod as 59. The rod is secured to the doors by any strap or strapsfiO having, set screws (-51 and turns in strap or straps 62. The door is connected with the couuterbalancing lever'37 by means of rod 59, rocker arm 63 and rod '34-, pivoted at one end to the rocker arm and the other end to the counterbalancing lover, The door is counterbalanced by arms 65 and any apprd priate weight 66 and shown as formed in a single plate or section, as shown by Fig. 5. In this figure; which omits the boots and allied structure the stufiing boxes 7 (see Fig. 10) or other means for preventing leakage of water at the ends of the pivoting rod are also omitted.

The doors 58' 11nd,;58 of Figs. 6 and 7 may be counterweighted and lifted in the same manner as door 58. if desired.

In the forms shown in Figs. 4 and 5 a space 68 is left, so that lifting of the section 27" will not catch pieces of slate between the edge of the section and the under surface of the tank outlet.

with each other.

In these two figures the section 27 is extended through the outlet in the tank at 7 l somewhat more than are the sections in- IFigs. 1, 4i and 5 and the door strip structure is placed wholly upon the outside of the tank. A space 75 is here allowed, as in Figs. 1 and 2, for movement of slate smaller or flatter than the coal being handled, this space being open even when the section 27 is in its highest position.

The rod 30 is here pivoted to the section to allow a slight amount of rocking movement exaggerated in the illustration, the purpose being to tend to move the slate toward the tan outlet by slight tilting movement of the section 27 responsive to the water ulsations. As wfl be seen, the pivot 56 is coated slightly nearer the edge of the tank than to the flange 28. This is intended to partly or wholly counterbalance the additional weight upon the front of the section 27 because of the greater height of slate upon the front of it, as compared with that upon the rear thereof.

The amount of rocking permittedisdetermined by the angular play between the edges 76 and 77 upon the two parts of the pivot and the extent of rocking will be further depend'ent upon the proportion between the surfaces exposed to pulsation in the front and rear of the-pivot respectively.

Slight rocking will affect the fit of the flange 29 against the inner surface of the tank and.

allow some escape of pulsated water here I and this discharge must in each intendeduse be balanced againstthe advantage oi the rocking to determine the value of providing for this rocking movement.

In Figs. 10 and ll'pivoted doors are "shown havingtines 78, 78, separated by any desirable spaces and preferably. of spring mate rial. The door.: 58-". in Fig. 10 is intended to be inte ral from end-to end and to be operated rom the counter-balance lever 37 by moans'of a rocker arm and rod construction of the same general character as in Figs. 4 and 5.

In Fig. 11 the door 58f is made u of sections 79 separately hingedabout t e rod and separately spring pressed by any suitable springs 80. k I

In both ('iithese' pivoted tine doors I pree top used and that the forms of each 0 valuable independently of the character of outlet mechanism and counter -wei hting these other features illustrated are also independently valuable. A

' It. will be evident that while my application Serial No. 46,667 above referred to includes claims covering movable'screen bottomsor sections thereof, whether the box be bodil movable or not broadly covering some 0 the subject matter specifically P claimed herein, this a'plication contains new subject matter not 5 own in the former application and applyin generally to jiggers whether the jigger box bodily movable or not. The provisionsfor an outside stabilizer by-pass with regulation and for tapping liquid from the stabilizer and the separately movable door sectionawhether with vertical or nearlyvertical movement or hinged move-' ment, are capable of such general use; and the greater slope for a movable front sec tion shown in Fig. 1 is applicable to both the plun' r-actuated' and "ox-actuated water impu s'e forms.

Having thus described-my invention, what I claim as new and desire to' secure by Letters Patent is v 1. In a device of the character stated, a tank adapted to contain water, a jigger box therein having a bottom screen movable with respect to the tank, means for causing relative movement between the screen and the ort for the izerfor the.

tar-d all movement of the-screen or insufii- .cie'ntly filled with fluid to permit predetermined lost motion in each direction and at the end of the lost motion retard-movement of the screen,

2. In a device of the character stated, a

tank adapted to contain water, "a jigger box therein having a bottom screen thereof mov' able with respect to the tank, means for causing relative movement between the screen and water and a stabilizer for the movable screen having lost motion. therebetween and adapted to retard movement in either direc: tion beyond the extent of the lostmotion.

3. In a deviccof the character stated, a

water tank, a jigger box therein having a slate outlet and. a screen in the bottom mov-

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