US1433022A - Mine cage - Google Patents

Description

N. A. M|CHAELSON.'

MINE CAGE, APPLICATION FILED NOV. 12'; I 9 2I.

Patented Oct. 24, 1922.

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N. A. MICHAELSON.

MINE CAGE.

APPLICATION FILED NOV. I2. I92].

Patented Oct. 24,1922,

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iii rzasszzsv N. A. MICHAELSON.

MINE CAGE.

APPLICATION FILED NOV. 12. I921.

Patented Oct. 24, 1922.

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MINE CAGE.

Application filed Ncvember 12, 1921. Serial No. 514,823.

To-aZZ whom it may concern:

Be it known that I, NnLsoN A. MICHAEL- SON, a citizen of the United States, and resident of Uniontown, in the county of Fayette and State of Pennsylvania, have invented certain. new and useful Improvements in Mine Cages, of which the following is a specification.

This invention relates broadly to selfdumping mine cages in which, when hoisted to the top of the mine shaft in which they are erected, the mine cages are automatically caused to tilt or dump in order to discharge materials loaded in mine. carsposit-ioned on the cage platforms into a chute which conveys the'material to other suitable cars, and more particularly relates to an apron adapted to prevent spilling of the materials from the cars on the cages into the mine shaft while said cages are being tilted.

The principal object of this invention is to provide an apron of the class set forth above that will be entirely automatic in operation.

Referring to the drawings, forminga part of this specification Figure 1 is a top plan view of a mine cage and conveying chute having my invention applied thereto.

Figure 2 is a sectional elevation on the line TIIT of Figure 1, showing the apron in its retracted position.

Figure 3 is a similar view showing the apron in its projected or operative position. In the drawings, the letter A designates the self-tilting mine cage asa whole, which may be of any well known. construction, and is shown composed of side members or posts 2, between which is supported a platform 35 having rails 1 thereon. and having slots or recesses 5 therein for the Wheels (5 ofthe mine cars 7. The ends of the mine cars '7' are provided with hinged doors 8 adapted to swing outwardly to open position, to allow the discharge of the material carried in said cars when the cage A is tilted. The tilting mechanism of the mine cage is not shown, since it does not form part of this invention.

An inclined channel-shaped chute B is mounted adjacent the mine shaft and is supported on a girder 9 extending between posts or upright supports 9 by suitable brackets or angle braces 10. The chute B is so arranged with relation to the mine shaft, that when the cage A is tilted it will receive the material discharged from the car 7 carried by said cage.

The chute B comprises a bottom portion 11, side members 12, and stiffening angles 13 and 14 secured across the bottom and sides respectively.

The above cage and chute construction is well known in the art, and therefore will not be described further in detail.

In order to prevent spilling of smaller particles of'material that, with little or no velocity, will dribble from the car as the cage is being tilted, from falling down the mine shaft or between thechute B and cage A, I provide an apron C. The apron C comprises a flat plate 15 mounted within the chute B and having a longitudinal angle stiffening member 16 secured on the under side along the rear edge thereof, andtransverse angle'members 17 secured on the upper face along each end thereof.

A pair of supporting brackets 18 are secured to the side members 12 of the chute adjacent their top edges, and links 19 are pivotally secured to said brackets and to the forward ends of said angle iron members 17 so as to suspend the forward end of the apron plate above the bottom of the chute.

A pair of crank arms or levers 20 are pivotally secured to the supporting brackets 18, and have their lower ends pivotally secured to the rear ends of the angle-iron member 1? to suspend the rear end of the apron plate above the bottom of the chute, while their upper ends project beyond the chute and into the path of travel of the cage A when tilting, forming an operating portion 21 which is adapted to engage the wear plates 22 on the as the cage tilts.

The operation of the invention is as follows- As the cage A is tilted to discharge the contents of the car '7, the cage will engage the operating portion 21 of the crank levers 20, thus moving or rocking the apron plate 15 rearwardly until it projects beyond the chute B, as shown in Figure 3, forming an extension to receive the smaller particles of material that will dribble, with little or no velocity from the car 7 as the cage is tilted, thereby preventing such particles falling down the mine shaft between the cage A and chute B. Upon the reversal of the cage A,

after the car 7 has been emptied and is being lowered into the shaft, the cage will release the port-ions 21 of the crank levers 20 and allow the apron plate 15 to normally move forwardly by gravity, out of the path of the descending cage. However, it the plate does not move forwardly by gravity, the cage platform will strike the curved portion of the crank levers adjacent their lower ends, and force said levers and the plate 15 to move forwardly and out of the l. The combination wit-h a tilting mine cage, and a chute adapted to receive materials irom cars carried by said cage, of an apron member pivotally suspended from the rear end of said chute and adapted to be moved rearwardly by said cage as it isimoved into tilting position.

2. The combination with a til-ting mine cage, and an inclined channel-shaped chute adapted to receive materials discharged from mine cars carried by said cage when said cage is tilted, of an apron member pivotally suspended from the sides oi? said chute, and means adapted to be operated by said cage as it is moved into tilting position to move said apron rearwardly, thereby forming an extension of said chute adapted to prevent any of the material discharged from the mine car falling between saidchute and said cage.

3;The combination with a tilting mine cage, and an inclined channel-shaped chute adapted to receive materials discharged from mine cars carried by said cage when said cage is tilted, of an apron member mounted onthe rear end of said chute and adapted to be moved rearwardly by said cage as it is moved into tilting position to form an extension of said chute to prevent the material discharged from the mine car "falling be tween said chute and said cage, said apron comprising a flat plate member, angle-iron side members, links pivotally secured adjacentthe forward end of each of said angleiron side members and to the sides of said chute, and crank arms pivotally secured adjacent the rear end of said angle-iron side members and at a point intermediate their ends to the sides of said chute, said crank arms having one end projecting beyond said i chute into the path of travel of said cage and adapted to be engaged thereby when tilting.

t. The combination with a tilting mine cage, and an inclinedchannel-shaped chute adapted to receive material discharged from mine cars carried by said cage when said cage is tilted, of an apron suspended from suitable supports secured to the side walls oi? said chute, said apron comprising a flat plate member, angle iron side members secured .to said plate member, links pivo-tally secured to said angle-iron side members adjacent their forward ends and to said supports on said chute, and crank arm operating levers pivotally secured adjacent-one end to said angle-iron side members and pivot-ally secured intermediate their ends to said supports on said chute, said crank arms having a portion thereof projecting beyond saidchute and into the path of travel otsaid cage, so

as to be engaged by said cage and operated to move said apron rearwardly when said cage is tilted.

In testimony whereof I have hereunto set my hand.

NELSON A. MICHAELSO}

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