US2132750A

US2132750A - Jig

Info

Publication number: US2132750A
Application number: US113029A
Authority: US
Inventors: Ernst F Muller
Original assignee: Jeffrey Manufacturing Co
Current assignee: Jeffrey Manufacturing Co
Priority date: 1936-11-27
Filing date: 1936-11-27
Publication date: 1938-10-11
Anticipated expiration: 1955-10-11

Description

E. F. MULLER oct. 11, 193s.

JIG

Filed Nov. 27, 1936 5 Sheets-Sheet 2' /NVE/VTOR: ERNST E MULLER,

BY "Oaqmmw,

ATT'Y Oct 11, 1938. E. F. MULLER -JIG Filed Nov. 27, 1956 3 Sheets-Sheet 5 lo /M/E/vO/Q.'

RNST MULLER,

OK@ m.

P .tmgeeocemisss i L 'y i v A 2,132,750

v '...2,132,7501 t t Y. f-

Ernst F. VMuller.'Columbus, Ohio; assignor to ,TheiJetlrey Manufacturing Company, a corpo- 4. `rationoHIliio p Y, vr: l,

application November 27, 193s, seal No. 113,029 v i i t 'r n 13Claiml..v(Cl.=209-`504) H .v n

invention relates'to a Jig,.`a'ndparticular pressure to the top side of piston 25." Itfalso has ly to a jig for washing coal andisepar'ating the atopjournaled s1eeve28 which with piston, 4iefuseifound in raw coal fromv the cle'ancclal.` insures straight line motion fI rod24 dia- A object of theinventionis to yprovidean ini-` i phragm ZI. 'Ijhehead endofcylinder. 26' is proproved diaphragnrit'ype o! jig inwhich the'water vided with a head 29 and is attached to ,Dres- '6 in the jig tank exertsastaticI iorce on the jig f sure air line 3|) which appliespressure tothe diaphragmand in which compressed air yxneans lowerfslde of the piston 25 to balance lorcounter-V are provided" to counteract this static force, act the-,weight of the `load on the diaphragm 2l. means also being provided to'reciprocate 'or oscil- The air line 30 extends to a compressed air tank late the diaphragm `by positive motion in re- 3I`in,which air is automatically maintained at a l0 verse c'iirections.` i' j substantially constant pressure byvautomatically Other objects ofthe invention will appear operablefpressure `responsive"motor and comhereinafter. the novel features and combinations pressorl mechanism 32,k or any` well-known conbeing set forth in the `appended claims.` struction., llis accns'equence the energy required l'In the accompanying drawings, 'l L to 'reciprocate the diaphragm 2| is greatly rel5 Fig. lis a side elevational view of the jig comduced. v j Q i` I prising myA invention; f i Q The cylinder 26 is preferably mounted between Fig.` 2 is a side elevational view ofthe device a pair ofi.channel`members`33"which are rigidly with one compartment shown in section; and i attached to the mainframelli( l l f Ti Fig. 3 is an enlarged detail elevational sectional To provideforjk reciprocation ofthe diaphragm 20 view'showing particularly the operating means kZI I provide a Vpitnian 34 pivotally attachedv'to for the diaphragm and the compressed air means `tliefpiston rod `24 and to a slide block 35 sl'ldably which counteracts the static load thereon. adjustable `cina pivoted walking beam 36', which Thejig' comprising my`invention comprisesfa beam 3G is. in turn. pivotally attached to a 25 main frame I0 formed by longitudinal andtransbracket' 31 carried by the channel 'members 33. "25 versely Aextending bottom'channels i II and up-f The walking beamlicarries a roller 38` which wardlyjextending angle members I 2. Upon the llides vbetween upper and lower ca'm surfacesv 3'9 main "frame lllis supported a tankil provided and 40, respectively,v ot a cam;4l. Cam 4I `l`s with. twdcompartments u and is. v The "commounted upona transversely extending shaft 42 O partmentsl I4 and I5 will be of similar construe- Supportedv upon the main frame Ill by appropriate 30 tion" f except for obvious dinerences which 'are Journal bearings, one ofvwhich is seen at 43. It principally `that the compartment I4 is provided will be evident that there will be two of said cams with a feedchute le and the rc'ompartmem; It, l4| and shafts Amand said'shafts are .connected is provided with a discharge chute I1. `Wlthin together j by` appropriate chain and sprocket each of said compartments` I4 and I5 is a permechanism 44.` Oneof said ,shafts I42is driven 35 iorate material supporting `plate `or screen I8, directly from an electric motor 45,.and'the other pivoted at its forward-'end on a transverse rodi I3 is driven from the rst shaft 42 through the and mountedupon adjustable hangers 20 at its chain and'sprocket mechanism 44. rear end. The screen `or plate Il will provide yK It isprefrerred that the diaphragmsvZI in the 40 Aa. supportior thematerial undergoing a ligging two compartments I4 and I5be adjusted to `op 40 i operation.l l i l i erate 1801degre'es out of phasev thereby to equalize 't 'Positioned below theplate I3 isthe bottom of lthe load on the motor 45... However, any other the compartment I'4,or` I5 which comprises a adjustment may be made. and if desired, they *disc-shaped diaphragmy 2|,` the cylindrical pemay be operated in phase. riphery of which is attached to the tank walls It is to be particularly noted that since the 45 by a flexible ring"22 preferably made of fabripressure `applied to piston 25 issubstantially con-v cated `rubber. Said ring 22 will permit recip-A stant the upward force on diaphragm ZI will be rOCatOry motion 0f the diphrm 2| for the pursubstantially constant and thus always `balance t pose ofcausing waterin` `the tankl I3 to move the static downward force thereon due to `the cyclically up and down through screen Il. weight of water in compartment I4 or` I5. This '50 Rigidly attached `to a center` casting 23 formupward force may even be greater than the ing partof the diaphragniull is a piston rod v24 static downward force to aid in balancing part carryingatits-lower end a piston '25" (Fig. 3)v of the dynamicmdownward force on said dlg.. which reclprocatesin a cylinder` I6. The cylinder phragm. It is rfor this reason that cam .4l is a i 26 has a large opening 21 to provide atmospheric double cam and is provided with both upper and 55 lower cam surfaces I8 and 45 which insure uniform cyclic movement of diaphragm 2| by a positive action in both directions.

It will be evident that adjustment of the slid block 34 on the walking beam, 35 will adjust the stroke of the diaphragm 2l during each cycle of operation.. Said slide block 34 may be locked in any adjusted'position by a wedge 48.

To supply the jigging water to the two compartments I4 and I5 I provide a longitudinally extending water pipe 41 with individual lead pipes 48, one for each of said compartments I4 and I5."

Each of said compartments I4 and I5 is also provided with a weir 4S having a vertical adjustable bottom plate 50 to adjust the size of an l opening 5I leading to a refuse discharge chute 52 formed by a stationary plate 53 and a pivoted plate 54 and leading to a vrefuse discharge boot 55. Pivoted plate 54 is rigidly attached to an arcuate wear plate 55 to the bottom of which is attached a pivoted weight 51. kThe plate 53 is valso arcuate opposite the plate 55. Between the

plates

53 and 55 is a paddle wheel type of discharge valve 58 which controls the rate of disy charge of refuse into the boot 55.' I y To provide for uniform conditions of treatment of the coal, thereby to insure a thorough cleaning thereof, I provide automatic oat responsive control mechanism for each of the valves 58 whichA maintains a bed of refuse on the plate I8 at a unform depth. Said float control mechanism comprises a float 59 of the totally submerged type carried on a parallel motion link mechanism 50, and controls a rod 5|- pivotally attached toa shield mechanism 52, which controls variably.

' Torremove the refusefrom the boots 55 of the two compartments I4 and I5, buckettype elevator mechanisms 10 are provided in association with each of said boots' 55, which elevator mechanisms 10 are driven from a motor 1I.

To provide access to the compartments I4 and I5below the screens or perforate plates I8 each of said compartments I4 and I5 is provided with a removable door 12.

The jig comprising my invention is particularly adapted for use to clean coal and to separate the refuse found inraw coal such as shale, pyrite and bony coal, but it may be employed to concentrate ores. Y

In the operation of thedevice, particularly in the cleaning of coal, the run of mine coal will be fed to the feed chute I5 and formed in a bed on the screen or perforate plate I8 where it will be subjected to the periodic pulsations of water passing upwardlyand downwardly through said screen I8. 'I'his action will effect a stratification of the bed according to specific Vgavlty with the high gravity refuse stratified on the bottom of the bed and the low and intermediate gravity refuse stratified thereabove. The coal will,l of

course, have the lowest specic gavity of the material forming the bed.

The oat 58 is not a true oat in that it is entirely below the liquid level in the tank I3, but it eiectively stratifles as a piece of coal on top of the refuse bed.. Said iloat 59 will be effective to maintain the refuse b ed at a predetermined depth on the screen I8 by virtue of its control of thevalve 58, as previously described.

The highest gravity refuse will be separated in the compartment I4 and `discharged into the boot 55 thereof. The coal and intermediate gravity refuse, such as bony coal, and possibly small particles of shale, will pass over the weir I4 into the compartment I5 where they will be subjected to a second jigging action. In said compartment I5 the refuse will again form in the lower strata on the lscreen I8 and will be maintained at a substantially' constant depth by the float 59 and valve 58 of said ycompartment I5. Only the clean coal will passover the discharge chute I1, the intermediate gravity refuse being withdrawn by said valve 58 and `discharged into boot 55 of said compartment I5. .Y y

It will beA evident that the jigging water in the compartments I4 and I5 of tank I3 will have a downward thrust on the diaphragms 2I. The static thrust will, of course, be proportional to the weight of the liquid in the compartment and this' force may be counteracted entirely or partially by the air pressure acting upon the bottom of the piston 25. As this air pressure will be substantially constant the counteracting force ,will also be substantially constant regardlevof the position of the diaphragm 2|. Ifv desired, the counteracting force may even be greater than the static force, because there will, of course, be a dynamic force necessary to move the liquid upwardly through the screen I8,y and this counteracting force may. at least in part. aid in reducing the work necessary to perform this lifting operationof the water.

In order to insure the accurate movement of the diaphragm 2I in accordance with a predetermined time-'velocity curve, the double cam 4I, with parallel upper and lower cam surfaces 39 and 40, is provided which controls movement of the diaphragm 2| in both directions by a positive action by virtue of the roller 38 having a diameter substantially equal to the spacing be tween .the cam surfaces 38 and 40. Thus, the fluid pressure counteracting means may be employed to counteract not only the static force on the diaphragm 2l, but also to counteract at least part of the dynamic force. This reduces Aappreciably the amount-of work the electric motor 45 must do to effect the jigging operation.

As was previously mentioned, it is also desirable to operate the two diaphragms 2|, 2| 180 degrees out ,of phase which will further equalize the load on the motor 45. If desired, however, said diaphragms 2 I, 2I may be operated in phase.

Obviously those skilled in the art may make various changes in the details and arrangement of parts without departing from the spirit and scope of the invention as defined by the claims hereto appended, and I therefore wish not to be restricted to the precise construction herein disclosed.

Having thus described and shown an embodiment of my invention, what I desire to secure by Letters Patent of the United States is:

l. In a jig, the combination witha tank adapted to hold water, a screen in said tank, a diaphragm in the bottom of said tank and below said screen, means for reciprocating said diaphragm to cause liquid in said tank to move through said screen cyclically, means for guiding said diaphragm in a parallel motion and for counteracting the downward' force of said water on said diaphragm comprising a cylinder, a piston in said cylinder, a piston rod rigidly attached at its top to said diaphragmand attached at its bottom to said piston, a guide for said piston rod. and means for applying a uid pressure to said piston.

2. In a jig, the combination with a tank having a diaphragm in the bottom thereof, of means for guiding said diaphragm for parallel movement and counterbalancing the weight of material on` said diaphragm, comprising a cylinder, a piston rod extending into said cylinder, a piston in said cylindercarried by said rod, means for oscillating'said diaphragm and piston, andv y said shaft.

ciprocates, said cylinder having an extended neck 10 carrying a bushing having sliding ,contact with said shaft, said cylinder being vented to atmosphere on one side of said piston and closed on the other side thereof, means supplying air under pressure to the said cylinder` on the closed 15 side of said piston, and means for reciprocating ERNST F.