US1092889A - Hoisting and dumping apparatus. - Google Patents

Description

A. ALLEN.

HOISTING AND DUMPING APPARATUS.

APPLICATION FILED APR. 6, 1912. 1,092,889. Patented Apr. 14, 1914.

3 SHEETSSHEET 1.

WITNESSES: l/VI/E/V TOR A TTOR/VE Y6 COLUMBIA FLANOGRAPH 60.,WASHINOTON. D. c.

ANDREWS ALLEN, OF CHICAGO, ILLINOIS.

HOISTING AND DUMPING APPARATUS.

Specification of Letters Patent.

Patented Apr. 1 1, 1914.

Application filed April 6, 1912. Serial No. 688,877.

To all whom it may concern:

Be it known that I, ANDREWS ALLEN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Hoisting and Dumping Apparatus, of which the following is a specification.

This invention relates to hoisting and dumping apparatus in general and more particularly to what is known as self-dumping cages adapted for use in mining operations where the loaded mine cars are run onto a hoisting cage which elevates them and dumps them into a suitable Weighing or screening hopper.

Several types of mine cages have been in general use prior to my present invention but more or less difficulty and annoyance have been experienced in their operation because of certain defects in the construction which my present invention is designed to obviate.

One of the primary objects of the inven tion is the provision of a stable cage, 2'. 6., a cage which can not be accidentally dumped while it is being elevated in the hoisting tower or shaft until it reaches the desired dumping position. 7

Another object of the invention is the provision of mechanism whereby the car on the cage can be dumpedeasily and slowly without abruptly throwing the load out of balance and imposing severe jars and shocks upon the structure.

A further object of the invention is the provision of a cage having all the mechanism located above the floor so that it will be necessary to provide no sump beneath the cage. Heretofore the cage structure has required a sump from 3 to 6 feet deep and if loaded cars run off the track and overturn into the sump great delay and expense is involved in cleaning out the sump before operations can be resumed.

Other objects and advantages of the present invention will be apparent as the same is better understood by reference to the following description when considered in connection with the accompanying drawings in which one preferred embodiment of the invention is shown.

Referring to the drawings-Figure l is a side elevation of a hoisting and dumping apparatus embodying my invention, the parts being shown in the position which they assume when the cage is being elevated;

Fig. 2 is a similar view showing the position of the parts just prior to the dumping operation; and Fig. 3 is a similar view showing the position of the parts when the car is dumped.

On the drawings 5 indicates the guides between which the cage travels, said guides being supported in any well known or preerred manner, the particular construction of the hoisting tower being immaterial so far as the present invention is concerned. The cage comprises the usual top 6, a horizontal floor 7, the guideways 8 connecting the top and the floor and adapted to cooperate with the guides 5, and the cage sides 9. A platform 11 provided with the usual track rails 12 onto which the dump car 13 of any preferred construction is run is disposed above and supported by the floor 7. The forward end of the platform 11 is slidingly and tiltably supported upon a transversely extending roller or rollers 14: journaled in the floor 7 adjacent the forward end thereof. Suitable mechanism, not shown, is provided for locking the car in position on the platform. The platform is normally supported on the floor during the raising and lowering movements of the cage in horizontal position as shown in Fig. 1 and, since the platform is supported at each end it remains in a position of equilibrium and stability so that there is no possibility of the car being accidentally dumped in the mine shaft during the travel of the cage. Suitable hoisting mechanism, not shown, is employed for raising and lowering the cage.

The sides 9 of the cage are equipped adjacent their rear ends with curved guides 15 in which guide rollers 16 mounted on the sides of the platform 11 adjacent the rear end thereof are adapted to travel. The curvature of the guides 15 is such that the rear end of the platform first travels upwardly pivoting about the supporting roller 14 and then the whole platform, and the car carried thereby, is moved bodily forward into dumping position. The upper ends of the guides 15 are left open as shown to prevent injury to the construction in case of overwind. The platform 11 may also be provided with sides 17 which project upwardly on either side of the loaded car and prevent the load from spilling 0E over the sides. A pair of links 18 is pivoted to the tilting platform adjacent the rear end there- "these links also extending upwardly and being connected with the free ends of the links 18 by a transversely extending rod or shaft 21. Upon the ends of the rod 21 is mounted a pair of guide rollers 22 and in termediate the ends of the rod a dumping wheel 23 is fixed thereon.

-At a suitable position above the normal travel of the cage floor a pair of curved guides 2a is fixed to the framework of the hoisting structure. These guides as shown are open at their lower ends to receive the guide rollers 22 on the ends of the shaft 21 and are gradually curved forwardly and upwardly so that the rollers will be directed forwardly as the cage approaches the upper limit of its travel. From Fig. 1 it will be observed that the lower ends of the guides 2st are disposed in the path of the upward travel of the shaft 21 and in alinement with the rollers 22 so that as the cage is elevated the rollers will enter the lower ends of the guides. Continue-d upward movement of the cage will cause the rollers to travel forwardly into the position shown in Fig. 2,

which movement, by reason of the connecting links 19 and 18, will cause the rear end of the tilting platform 11 to be elevated, the upward travel of the rear end of the platform being guided by the rollers 16 traveling in the guides 15. By reason of the shape of the guides 15 and 24 a slight continued upper movement of the cage beyond the position of the parts shown in Fig. 2 will cause the platform and the car carried thereby to move forward very quickly into the dumping position shown in Fig. 3, so that the forward or dumping end of the car will be positioned over the dumping plate 25. Vhen the tension upon the hoisting cables is released the platform will drop back to its normal horizontal position, the cage will travel down the guides 5 and the guide rollers 22 will be withdrawn from the guides 24 as the cage moves down the shaft.

The dumping cars which are ordinarily used are equipped with a pivotally mounted front or door 26 which is adapted to be elevated to permit the contents of the car to be discharged or dumped at the proper time. For the purpose of opening the dumping door quickly and positively when the car has reached dumping position I have provided improved mechanism which I will now describe. A bell-crank lever comprising the curved arm 27 and the normally horizontal arm 28 is suitably pivoted at 29 in the hoisting tower framework so that the arm 27 projects upwardly between the guides 24. and in the path of the dumping Wheel 23 mounted 011 the shaft 21. A hook 31 is suspended from the outer end of the arm 28 in position to engage beneath a curved finger 32 fixed to the upper end of the door 26. Vhen the tilting platform is given its initial forward movement the fin- .ger 32 will be moved over the end of the plate 25, but immediately after this position has been reached the door is opened very quickly and the contents of the car are immediately discharged upon the dumping plate. As the tilting platform returns to normal position after the dumping operation the door 26 closes under gravity and the backward movement of the car and platform occasioned by the sharp curvature of the guides 15 withdraws the finger 32 from the hook 31, permitting the parts to resume their normal position as shown in Fig. 1.

From the foregoing it will be understood that I have provided an improved hoisting and dumping apparatus which will positively dump the cars with a minimum amount of shock and jar to the structure and which can be readily controlled in its movements by the engineer. The forward ends of the guides 24 are also left open, as shown, to prevent injury to the apparatus in the case of accidental overwind.- The tilting platform is normally supported at both ends on the floor 7 and is maintained in a position of equilibrium and stability and, it will be observed, that accidental sliding movement of the platform in a longitudinal direction is prevented by the guides 15 in which the rollers 16 always rest. All of the tilting and operating mechanism is, located entirely above the floor 7 so that there are no projecting parts or mechanism beneath the floor which would require the construction of a sump beneath the cage. 7 It is believed that the construction and operation of my invention will be understood from the foregoing without further description and, while I have shown and described a preferred embodiment of the invention, it will be obvious that various changes in its construction may be resorted to without departing from the spirit or sacrificing any of the material advantages of the invention.

I claim:

1. In a hoisting and dumping apparatus, the combination of a cage floor, a platform normally supported by said floor in horizontal position, members projecting up.-

\vardly from said platform and floor and connected together above the platform, and means cotiperating with said members for elevating the rear end of the platform relatively to the cage floor. 1

2. In a hoisting and dumping apparatus, the combination of a cage floor, a platform normally supported at its ends in horizontal position above said floor, a guide mounted on the cage adjacent the rear end of the platform, a fixed guide, pivotally connected links attached to the cage floor and platform, respectively, and means cooperating with said guides to tilt the platform and move the same forward bodily into dumping position.

3. In a hoisting and dumping apparatus, the combination of acage floor,acarcarrying platform disposed above said floor, a roller upon which the forward end of the platform is slidingly and tiltably supported, a guide mounted on the cage adjacent the rear end of said platform, a fixed guide, and means including rollers on the platform and links pivotally connected together above the platform cooperating with said guides whereby the platform is moved relatively to the cage floor into dumping position.

4. In a hoisting and dumping apparatus, the combination of a cage floor, a tilting platform, and means for tilting and sliding said platform into dumping position, said means including a plurality of links connected together above said platform and connected respectively with said cage floor and said platform.

5. In a hoisting and dumping apparatus, the combination of a cage provided with a floor and side walls, a roller mounted adjacent the forward edge of said floor, a platform supported at its forward end on said roller, guides mounted 011 the cage side walls adjacent the rear ends thereof, rollers secured to said platform and adapted to travel in said guides, and means disposed above said platform for causing said rollers to travel upwardly in the guides whereby the platform is tilted and moved forwardly into dumping position.

6. In a hoisting and dumping apparatus, the combination of a cage provided with a floor, a platform disposed thereon, upwardly extending links pivoted to the platform adjacent the rear end thereof, links pivotally connected with the floor adjacent the forward edge thereofand extending upwardly therefrom, means connecting the upper ends of said upwardly extending links, guides mounted on the cage, and stationary guides mounted above the cage, said guides and links cooperating to tilt the platform relatively to the floor and move the same forwardly into dumping position.

7. In a hoisting and dumping apparatus,

the combination of a cage provided with a floor, a platform disposed thereon, a pair of links pivoted to the platform adjacent the rear end, a second pair of links pivoted to the cage floor adjacent the front end, a rod connecting the free ends of the pairs of links above the cage, guide rollers mounted on the platform adjacent the rear end,

guides therefor, and fixed guides adapted to swing the connected ends of said pairs of links forwardly whereby the platform is moved to dumping position.

8. In a hoisting and dumping apparatus, the combination of a cage provided with a floor, a tilting platform disposed thereon and adapted to carry a dumping car, a plurality of pairs of links extending upwardly from the cage, a rod connecting said links at their upper ends, and means positioned to be operated by said rod for opening the door of a car disposed on said cage.

9. I11 a hoisting and dumping apparatus, the combination of a movable hoisting cage, a car carried thereby and equipped with a door at the forward end thereof, a transversely extending rod supported above the cage, a bell-crank lever positioned with one arm in the path of the travel of said rod, and a hook carried by the other arm in posi tion to engage with said car door whereby the door will be opened when the bell-crank lever is operated by said rod.

10. In a hoisting and dumping apparatus, the combination of a hoisting cage provided with a tilting platform, a car disposed thereon, means for guiding the rear end of said platform during its tilting movement, a pair of links connected with said floor, a second pair of links connected with said platform, a rod connecting the free ends of said links above the car, means for guiding the direction of travel of said rod whereby the platform is tilted, and door opening means positioned in the path of travel of said rod and adapted to be operated thereby, whereby the door of the car is opened when the platform has been moved to dumping position.

11. In a hoisting and dumping apparatus, the combination of a cage, a car carried by said cage and having a dumping door at one end, a member carried by the cage above the car, and means pivotally mounted in the hoisting tower in the path of movement of said member, to be actuated by said member, whereby upon tilting movement of the car the car door will be opened.

12. In a hoisting and dumpin apparatus, the combination of a cage, a platform supported above the bottom of said cage, and means for moving said platform into dumping position, said means including a plurality of links projecting upwardly from the rear end of the platform and from the cage adjacent the front end of the platform, respectively, said links being connected to gether above said platform.

13. In a hoisting and dumping apparatus, together above the platform, and means cothe combination of a cage, a platform noroperating With said members to tilt the platmally supported by said cage in horizontal form relatively to the cage.

position, members projecting upwardly from ANDREl/VS ALLEN. 5 said platform, other members projecting up- WVitnesses:

wardly from the cage adjacent said plat- IRA J. WILSON,

form, all of said members being connected M. A. KIDDIE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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