US1647876A - Automatic drop-bottom mine car - Google Patents

Description

Nov. l,- 1927.

S. H. MPCRARY AUTOMATIC DROP BOTTOM MINE CAR- Filed Feb. 27. 1926 2 Sheets-Sheet 1 gwue'ntoz I SamueIHMWary Nov. 1, 1927.

s. H. M CRARY AUTOMATIC DROP BOTTOM MINE CAR Filed Feb. 27. 1926 2 Sheets-Sheet 2 Q1 my Q m QNAX mm m w ,WW/Q. a Q & \k v Patented New, 1, 1927;

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AUTOMATIC :PBOP-BOT'IOM; ime can.

le plicationh filedeltebruarmw, 1926. Serial No. M355.

-My said invention eletes into, improve 5 tails -Of -COHStIUgGtiOIL and arrangement ,ot

paletswwheireby various: advantages are se.

cured in ll l'liiopenationl.Ofllth ,ear i3 i char gewits contents all I was will be. hereinafter mjore hillysclesoriloed;and iolaimed.

tRef -i gwto the Laceompanying draw ng which ere; made apart, hereof and, lo -W i vention,

*Figure 3; alongitudinal section With the 0 discharge dOQIS lD I closed npositlon,

- Figure 4;, a similar section with the doors open, i Figure 5, a :tragmentaryv lOIlgllltlCllIlll; section= dll-ustrating a 1 modified form of releas- 5 ing *meohanism, and,

EBiEig-ure' 6, a section vOnT Ltl1e.line 6-f 6 of Eigure fi. a

In the drawmgs reference character 10 111; dioates theybo'dy of a mine. ca thaving wheels 1 ll-iadapted-to run upon a traek"12.p; Side memhersplg extend longitudinally of the car anel-form bearings for; axles 114,, upon which i the Wheels are mounted. t The ear--10 is provided with a lbottomqasi sembly comprising one 0111 moredischarge doors 'pivota1ly mounted Jhy means Eliot' brackets or strap hangers-16 uponl trans: versely and longitudinally: disposed shafts 17 Said shafts; 17- are mounted intheside i memhers 'lii adjacent the loweredgethereot soythat 'the door's l5 When disposed infhori- 'zontal positionwvilh constitute a COIllllIltl-l ous bottom wfor the ear; but wh ich iwhen re leased will permit thew eontentiot the car i todischargetherefromby gi'avityu Forfthel purpose of illustration I have shown three discharge doors, howeveiyany number be) employed and means is'gprovided .for maintaining these doorsinthe elosed posig tion; l l "*Thedoors 15 areadapted to loe held in elosediposition by means oflatches, or locks 18 mounted on the sidememhers 13, one jaeentthe tront edge ofthe dooriat leach Fig ure-l is a sideu elevation-rot. an line 5 carillustnatingi the application of my in track 12.

I l I at 24 anchis adapted to. be mocked on Eigure 2 amendgelexzatiorrwith portion bttoken away" to expose 2 the,' releasing lever,,

' side otthe ear and thesaid doors areprefer-vfi mentsain-mine:carstrommhiehic031orlother ore :may be lautomatically discharged and 3 Consists variousi improvements inthe 1 de- ,1

ly-n tched at th o t r :CQPIEES we isiprovi led With a eentrallyi d he. e 9 tse le ll e h rdly exte d ng tongue 19 wh-ichiis dapt lto he v l eeee byivt ebq I 1 operat ng lever, the long ar similar reference eharaeters ;indicate similar i .an .t W M ezgtends through a hraeket22 and 'OlllZ JtO h d tth writ onelz tp iby in i cl n op ati g l me t 2dmeunt lonl i ;The operating levee is; pivoted ea-side pivot the arm 21 riding upward ontthe operating element as the ear is moved along it the fracl Iheoute 3ond tthe g igi 5 5m 21 of the operating leyenis preferably provided with a eight 25in order to normallyi hold jthe lever in 1 position v for] holdin'g the doors, closed. l I

The latches orr loeliing elements l8; are pr oyided ith rearwardlyj extending ppm atmg arms and are alsoPreferablyiprdzidyd 8O with thickened or eighted portions -,;26fin order that they may be normally maintained in full released position. In order to": provent-,,t11e i-latehes fr m ,t o ta ting it s es members of; the ear they are: further pro; 'vided, with bosses or spacing elements which} may b eiformed eitherintegrally wi hiqor separately from the latches. 1

1 In the operation ;ot the deviee thev car loaded with eoalor other ore is moved along; the track in the direction of thearrow shown" In Figure l until,the operatingv arnL Qlj en'- gages and tides up a the inclined operating element 23, whereupon the short armpihthe operating leverfwillbe' moved frombeneath thetongue-lQof the rear door 15 permitting StllClClOOl' to drop to substantially iyeitical position. .At the same, time the; forward edge of theldoor Will force the rearwardly i extendinguarms ofthe looks l8' upwardly to release the next succeeding door; and flother rearwardly located doors .Will be ireleased in the same manner and permit the load to he discharged Further IHOVQHIGBQ, of the, car along the track Will bring the forward, doogi; into engagement with the closing, bl ocl26 in the center of the tizack WllltllfizVlll js uecessively raise the doors to horizontal, position holding each door in this position until the forward edge of each succeeding door acts as a lever to move the latch into engagement beneath the rear edge of the preceding door to pull the same in closed position. The door at the rear end of the car having the tongue 19 will pass last over the closing block and the short arm 20 of the operating lever will engage said tongue and hold the door in horizontal position.

Instead of the means for releasing the rear door of the car I may use other desired releasing mechanism such as I have shown in Figures 5 and (i. Said mechanism comprises a pair of latching elements or hooks 27 fastened one at each side of the rear door, for co-operation with co-operating latches or locks 28 pivoted at 2-9 having rearwardly extending arms 30. A shaft 31 extends transversely and horizontal through the side members 13 and beneath the rearwardly extending arms 29, and cams 32 are mounted one under each arm for rocking the latches 28 upon their pivots to move them out of engagement with the latching elements or hooks 27. The shaft 31 projects outwardly at one side of the car to a position beyond'the other parts of the car and a depending lever 33 is fixed thereon. An operating element 3 1 is mounted on the track in upright position in the path of movement of the lever 33 so that said lever will be rocked to substantially horizontal position when passing over the same, and thus cause the majorportion of the cams to engage the rearwardly extending arms 29 of the latches and elevate them to release the rear door.

A second operating element 36 is'provided for rocking the lever 33 and the associated cams 32 to retract the latches and permitthe doors to swing to closed position whereupon the lever is moved downward under the action of gravity and latches 28 engage the hooks 27 and hold the door closed. This operating element is placed at a point along the track so that it will engage the lever 33 at the moment the door is slightly below its normal locked position and will swing the latches out of the path of the door and beneath the door to maintain it in closed position. I

In order to reinforce the doors 15 I preferably provide a pair of braces or angle irons 35 mounted longitudinally of the car beneath each door and the depending por- V tions of said braces or angle irons co-operate with the closing block 26 for centering the door during the closing operation.

Bumpers and draw bars of any desired type may be used and it will be obvious to those skilled in the art that various changes may be made in the device without departing from the spirit of my invention, and I, therefore, do not limit myself to what is shown in the drawings and described in the specification, but only as set forth in the appending claims.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent, is:

1. Releasing means for the dumping doors of a mine car comprising a latch mounted in aposition to engage the rear edge of a door when the same is in horizontal position, said latch being adapted to be actuated by another door for releasing the first door and for securing the same in closed position, a latch for holding the second door in closed position, a shaft mounted adjacent said latch and a cam fixed on said shaft and adapted when the shaft is rocked to operate the latch to release the door, substantially as set forth.

2. The combination with a mine car bottom assembly operable to permit the discharge of the contents of the car, and comprising a plurality of doors pivoted adjacent their forward edges transversely of the body, of a plurality of latches mounted adjacent each side of the body and adjacent each door in position to engage the rear edges of the doors when they are in substantially horizontal position, each succeeding door being adapted to actuate the latches adjacent its forward edge for releasing the preceding door and for moving said latches into engagement therewith, for securing the door in closed position, latching mechanism for holding the door at the rear end of the car in closed position, a shaft tranversely and horizontally mounted adjacent said latching mechanism, cams on said shaft for releasing said latching mechanism, a lever-depending from said shaft, a track, and an upstanding operating element adjacent said track for rocking said depending cams and release the rear door and a closure block mounted on said track for swinging said doors to closed position, substantially as set forth.

3. The structure set forth in claim 2 and a second upstanding operating element for oscillating said cams to permit the door to be closed, substantially as set forth.

1. In a dumping car, a pivotally mounted dumping door, a latch for holding said door in closed position said latch having a forwardly extending arm, a shaft mounted adjacent. said latch and projecting outwardly beyond the side of the car, and a cam fixed on said shaft and arranged to operate the latch to move it to position to release the door when the shaft is oscillated, substantially as set forth.

5. The combination in a dumping car of a pivotally mounted dumping door, a latch for holding said door in closed position said latch having a forwardly extending arm, a shaft mounted adjacent said latch and projecting outwardly beyond the side of the car, a cam fixed on said shaft and arranged to operate lever to operate the the latch to move it to position to release the door when the shaft is oscillated, a track, and a pair of upright elements mounted in spaced relation along said track, one of which upright elements being arranged; in

position to perform the dumping operation and the other being arranged in position 'for looking the door in closed position, substantially as set forth.

In Witness whereof, I have hereunto set 1 my hand and seal at Knoxville, Tennessee, this 24th day of February, A. D. nineteen hundred and twenty-six.

SAMUEL H. MOCRARY.

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