Патент USA US2121628код для вставки
June 21, 193s. w_ B, FLEWNC; 2,121,628 CONVEYER Fiied July so, 1935 2 Sheets-Sheet,4 1 Júnè 21, 1938. w. à. FLEMING I 2,121,628 CONVEYER Filed July 30, 1935 2 Sheets-Sheet 2 ATT'Y Patented `lune 21, 1938 ì ZJZLGZS UNITED STATES PATENT ’ ortica 2,121,628 ì coNvEYER. ‘ William B. Fleming, Columbus, Ohio, assignor to _The Jeffrey Manufacturing Company, a cor - poration of Ohio Application `July 30, 1935, Serial No. `33,850`v 11 Claims. <01. 19a-171) This invention relates to a conveyer, particu tion' mechanism I5 and chain and sprocket driveA larly of the type adapted to gather coal after it means I6. is shot'down in a mine room. The tail section B of the conveyer is provided An object' of -the invention is to provide a with an adjustable shaft Il carrying a sprocket 5f conveyer of the above mentioned type in which a I8 adapted to mesh with the chain II. Appro- 5 hold-down roller is provided at the tail end which pri'ate’chain tensioning means I9 are provided will permit free passage of bent flights. for maintaining proper tension on the chain I I `Another object of the invention is to provide andv providing for the slackening of> said chain a conveyer of the above mentioned type in which II, whereby the links thereof may be discon 10“ a hold-down roller is provided at the tail ’end nected tol insert or remove links to vary the 10 which roller is grooved to permitA free passage of length thereof when the length of the entire flight attaching rivet heads. conveyer is‘varied. `vOther objects of the invention will appear hereinafter, the novel features and combinations' 1`5- being set lforth in the appended claims. Fig. 1 is a plan view of a conveyer comprising my invention; Fig. 2 isa side elevational view of the device of Fig. 1; 20 Y Fig. 3 is an enlarged perspective View of the tail section of my invention; . ~ Fig. 4 is a sectional view of the tail section taken on the line 4_4 of Fig. 1 looking in the direction of the arrows; 25 Fig. 5 is a side elevational view of the tail sec tion of the conveyer of my invention; and Fig. 6 is a transverse sectional view taken on the line 6_6 of Fig. 1 looking in the direction of the arrows. ` Referring particularly to Figs. 1 and 2 of the drawings, there is seen a conveyer `comprising my invention which is particularly adapted to be employed in a coal mine as a face or as Va room conveyer. That is, this conveyer, when used as 35 a face conveyer, will be placed near the face of a coal mine room, which face is cut and> shot down, after which theshot-down co‘al is loaded onto the conveyerand- bysaid conveyer delivered to room conveyers, which may be of the same 40 construction, by which it is conveyed from the room onto appropriate mine cars, or the like. The said face or roomv conveyer comprises a head section vA, a tail section B and one or mo-re intermediate sections C, which may be remov 45 ably attached by angle and bolt clamp means 8 and 9. The number of intermediate sections C may be varied at will to determine the length of the entire conveyer. The three sections A, B and C cooperate to form acontinuous trough IIl having a bottom plate I0', within which trough is adapted to travel a continuous chain II carry ing material conveying flights I2. The head sec tion A is provided with a drive shaft I3 which is driven from al motor I4 through a speed reduc 1 ’ It may be noted that the head section A is provided with aY diverging bottom wall 2U and a< dividing plow or deflectorZI, which plow 2I is 15 positioned in advance of drive sprocket 22 car ried on shaft I3. - Said diverging bottom wall 20 and plow or 'dei-lector 2I are effective to free any material 'which may be’caught under flight I2 as the Hight approaches the shaft I3. As best seen'in Fig. 6 of the drawings, the - return path of the chain II and the flights I2 ’beneath the trough I0 comprises a pair of wear strips 23, 23 which extend longitudinally of the trough I0 and adjacent the sides‘thereof. These strips are attached to transversely extending pipes I I ’ which constitute supports for the inter mediate sections C. Referring particularly to Figs. 3, 4 and 6, at tention is directed to the particular construction off the tail section- B and more particularly to the- construction of the hold-down roller 24. It has been found in practice that the flights I2 sometimes become bent `as illustratedin Fig, 6 and, unless special means are employed, such as herein disclosed, :the hold-down roller or a flight is apt to- become broken when the bent flight attempts to pass under the'hold-down roller. To obviate this undesirable feature, I provide the hold-down roller 24 with a pair of end sections 25, 25 which are frusto-conical and of reduced diameter progressively outward toward each end thereof. ' As is well illustrated by Fig. 6A of the drawings, this particular construction of the roller willv` allow a bent flight I2 to pass thereunder without damage to the flight or the roller. It will, of course, be obvious that the hold#v down'roller ‘Mis highly desirable to the end that the chain II and the flights I2 will be guided to 50 the bottom of the trough as they emerge from the tail section B. ` The ñights I2 are most readily attached to the chain II by rivets 26 which co-operate with 2,121,628 2 wing links 21 of the chain II, which rivets 26 have projecting heads. of parts without departing from the spirit and defined by the claims ' scope of the invention as Another feature of the hold-down roller 24 re sides in the provision of a pair of circumferential grooves 28, 28 which allow free passage of the heads of rivets 26 under said hold-down roller 24. Between the grooves 28 the hold-down roller 24 preferably comprises a cylindrical section 29. In addition to the elements above specifically 10 described, it is evident that the tail section B comprises a box type frame 3B including a piv oted top cover 3|, provided with handles 32 andv reinforcing angle members, which is adapted to hereto appended, and I wish therefore not to be restricted to the precise construction herein dis closed. Having thus described and shown an embodi ment of my invention, what I desire to secure by Letters Patent of the United `States is: protect the shaft I'I, the sprocket I8 and hold 15 down roller 24 from the coal` as itis shot down from the room face. In the operation of the device comprising my invention as a face conveyenl the conveyer is preferably placed near the face of a room. in a. 20 coal mine after appropriate kerfs have been cut in said face. The coal’ is then shot down and in some instances the conveyer will be almost buried; by the shot-down coal. The motor I4 may then be- started and the conveying. mecha 25 nism, including the chain H and the flights I2, will- clear the trough I0 of filled coal and dis charge it into another' conveyer ory anyappro priate means forremovi'ng the coal. The addi tionai shot-down coal;- will'zthen.y be loaded’ into trough Izïl` by which 'rtY will beconveyed away as aforesaid. Hold-down roller 24 will be operative to guide the chain I1I' andthe flights. I2 to the' bottom of the.'> trough. IiiA as theyY emerge.~ from the tail sec tion B. As was.l above pointed out, thetapering or frusto-conical. end' sections 25“, 25v ofi the hold down roller 24V` permit freeV 'passage of> any bentv flight I2 thereunder. The. circumferential grooves 281,. 28’ also. permit free' passage of the projecting heads'.- of rivets. 2'6; thereunder. As'the 45 coal is discharged over the-head section’A of conveyer, the diverging bottom' wall Zûf and plowv 2'I guide the material to each side 'of central drivesprocket 22 and free flights I2' of particle of coal which is caught thereunder the the the any . The particular arrangement of the sprocket IB', shaft Il'Ii, roller 24, trough bottom: I0" and chain I I, is a feature of my invention and is pro vided to. the end. that the overall height of the conveyer will be maintained ata minimum to ac comm'odate` itself to a low vein mine. As best seen in Fig.. 4, the shaft I"II and sprocket I8` are so positionedthatthelower or return run'of chain I I ishorizontal, or, in other words, said lower’run extends tangentially from. saidV sprocket I8. TroughA bottom Iii" is so. positioned as. to provide for> thisîconstruction. This results ina minimum of friction between, flights; I2’. and guides'2-3,which increases greatly thev life of both. This'arrange ment of parts also provides for the' positioning 60 of bottom IU’ in the- lowest possible position for the purpose of mai-ntainingia minimum trough height, as above mentioned. However, unless some1» hold-down means were provided- for the upper run. of. the; chain». I»I., it would` not contact the trough bottom I0! as it emerges from tail section B, and coal: would get. caught under the flights I2; Hold-down roller 24 insures that the ñights will contact the trough bottom i0" as they emerge from the said tailv section B. l. In a conveyer, the combination with a trough, of a continuous chain, flights carried by 10 said chain, head and tail sprockets for said chain, a hold-down roller adjacent said tail sprocket adapted to guide said chain to a posi Ytion on the bottom of said trough, said roller be ing vof reduced diameter progressively outward to 15 ward each end to permit bent flights to pas's It is also to be noted that the hold-down. roller v2l! is ade quately protected from falling coal by the rein forced top` 3l of said tail section B. Obviously those skilled in the art may make 75 various changes in the details and’ arrangement thereunder. 2'. In a conveyen, the combination with a trough, of a continuous chain, flights carried by said chain, head and tail sprockets for said 20 chain; a Ahold-down 'roller adjacent said- tail sprocket adapted4 to guideV said chainto a posi tion on the bottom of said trough, said roller be ing tapered to permit bent‘flights to pass there 25 under. 3‘. In . « ' a. conveyer, the combination with a trough, of a continuous-` chain, flights carried by saidV chain, head *and* ta-il sprockets for said chain', a hold-down roller adjacent said tail sprocket adapted.- to- guide said chain to a 3.9. positionron the bottom> of` said trough, said roller comprising a cylindrical Vcenter `por tion, and.T end portions forming conical sections of reduced diameter progressively outward to eachl 35; end to permit bent flightsto pass thereunder. 4‘. In a` conveyer, the combination. with a trough, of a continuous chain adapted to. travel substantially along the central longitudinal axis of the trough, flights attached at their centers to said». chain by rivets~ having upwardly' project ing heads, head and ltail sprockets for said chain, a hold-down roller adjacent said tail-sprocket adapted- to-'holdë' said* chainagainst the trough bottom, said roller having circumferential grooves adapted tof'permit free passage of said 45 rivet heads' and'having outwardly tapering coni cal portions adapted. to» permit the free passage ofl bentvv flights - thereunder. ' 5. A tail section for a conveyer comprising a` framev having sidewalls, a shaft extending be 50 tweenV said walls, a- central sprocket on said shaft, ahold-down roller extending between said side.' walls «forward of said shaft, said roller hav ing outwardly tapered conical portions and a» pair of- centrally positioned circumferentiall grooves. 6. A' tail section for a conveyerV comprising a frame having' sidewalls, a shaft extending be tween said walls, a central sprocket on said shaft, a. hold-down roller extending betweensaid side walls forward of said shaft', said roller having 60. outwardly tapered conical portions.v 7. A hold-down roller fo-r a chain conveyer comprising a body having a central cylindrical portion, conical end portions of decreasing di ameter from the center thereof, toward the ends, 65 said- body being provided with circumferential grooves between the central cylindrical portion and the conical end portions. 8. A hold-down roller for a chain conveyer comprising a body having a central cylindrical 70 portion, and conical end portions, said body being provided with circumferential grooves between said central portion and said end portions. 9.. In a conveyer, the combination with a trough having side walls, of a continuous chain 75 2,121,628 adapted to travel along the center of said trough, flights carried by said chain having arms extend ing laterally thereof, centrally positioned head and tail sprockets for said chain, and a hold down roller extending between said side walls and positioned adjacent said tail sprocket having a central roller portion adapted to ride on said chain and guide it to a position on the bottom of said trough, said roller being constructed to 10 permit vertically bent arms of said flights to pass freely thereunder by having its ends beyond said central portion of reduced diameter. 10. In a conveyer. the combination with a trough, of. draft means adapted to travel sub stantially along the central longitudinal axis of the trough, a tail sprocket for said draft means positioned centrally of said trough, a hold-down roller adjacent said tail sprocket adapted to hold said draft means against the trough bottom, 20 flights attached to said draft means and having 3 wings extending laterally to each side thereof, said hold-down roller having outwardly tapering portions adapted to permit free passage of up wardly bent flights thereunder. 11. In a conveyer, the combination with a trough, of draft means adapted to travel sub stantially along the central longitudinal axis of the trough, a tail sprocket for said draft means positioned centrally of said trough, a hold-down roller adjacent said tail sprocket adapted to» hold l U said draft means against the trough bottom, flights attached to said draft means and having Wings extending laterally to each side thereof, said hold-down roller having a central substan tially cylindrical portion adapted to ride on said draft means and having portions of reduced di ameter extending over the paths of said wings to permit bent flights to pass freely thereunder. WILLIAM B. FLEMNG.