# US 8,740,312 B1 · Mining sled with movable bed

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- Number: US 8,740,312 B1
- Document ID: US8740312B1
- Status: Granted
- Kind: B1
- Application number: 13/547,499
- Filed: 2012-07-12
- Granted: 2014-06-03
- Earliest claimed: 2011-07-14
- Applicants: Sterling Wayne Lowery
- Inventors: Sterling Wayne Lowery
- Web page: https://patentgrep.com/patent/US8740312B1

## CPC

- E21F 13/00: Transport specially adapted to underground conditions (mine cars B61D; transport in general, loading {unless specially adapted to underground conditions} B65G)
- E21D 9/12: Devices for removing or hauling away excavated material or spoil; Working or loading platforms (underground transport E21F13/00)
- E21F 13/02: {Transport of mined mineral} in galleries
- E21F 13/063: {Loading devices for use in mining}
- E21F: SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21D: SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS (soil-conditioning or soil-stabilising materials C09K17/00; drilling or cutting machines for mining or quarrying E21C; safety devices, transport, rescue, ventilation or drainage E21F)

## Abstract

A mining sled with a movable bed. The movable bed nests within the sled and is slidable with respect to the sled. Stops are located on the sled to limit the distance the movable bed can travel with respect to the sled. The movable bed includes brackets at a first end for attachment to the pull-out rope of a pull-out winch. The second end of the movable bed includes a mount for attachment of a pulley. The pulley on the movable bed facilitates attachment to a pull-in rope that is connected to a pull-in winch for transporting the sled toward the continuous miner.

## Claims

### Claim 1

A mining sled comprising:
a sled body including a sled base and sled sidewalls extending from said sled base, said sled sidewalls including an inner surface and an outer surface;
a movable bed slideable within said sled body, said movable bed including a bed base, bed sidewalls, a pull-out end, and a pull-in end;
a bed stop at each end of said sled body;
a pulley secured to said bed base at said pull-in end; and
a cable attachment mechanism at said pull-out end of said movable bed.

### Claim 2 (depends on 1)

The mining sled of claim 1 including two rub rails extending longitudinally along said outer surface of said sled sidewalls.

### Claim 3 (depends on 2)

The mining sled of claim 2 including a rope channel on said outer surface of said sled sidewalls between said rub rails.

### Claim 4 (depends on 1)

The mining sled of claim 1 including sloped corners on said movable bed at the juncture of said bed base and said bed sidewalls.

### Claim 5 (depends on 1)

The mining sled of claim 1 wherein said pulley includes a pulley support extending from said bed base.

### Claim 6 (depends on 5)

The mining sled of claim 5 wherein said pulley support includes
a base plate; and
a top plate.

### Claim 7 (depends on 6)

The mining sled of claim 6 wherein said pulley support includes a plurality of struts extending between said base plate and said top plate.

### Claim 8 (depends on 6)

The mining sled of claim 6 including a shaft extending between said base plate and said top plate and said pulley is mounted on said shaft.

### Claim 9 (depends on 6)

The mining sled of claim 6 wherein said pulley support includes legs extending from said bed base to said base plate.

### Claim 10 (depends on 1)

The mining sled of claim 1 wherein said cable attachment mechanism is a bracket extending from said movable bed.

### Claim 11 (depends on 1)

The mining sled of claim 1 wherein said cable attachment mechanism is a bracket extending from each of said bed sidewalls of said movable bed.

### Claim 12 (depends on 11)

The mining sled of claim 11 wherein each of said brackets includes an aperture therein.

### Claim 13 (depends on 12)

The mining sled of claim 12 including a spreader bar extending between said bed sidewalls, said spreader bar secured to said bed sidewalls substantially near said brackets.

### Claim 14 (depends on 12)

The mining sled of claim 12 wherein said brackets include a sling secured thereto, said sling secured through said apertures in said brackets.

### Claim 15 (depends on 1)

The mining sled of claim 1 including
a bottom surface on said sled body; and
a skid plate on said bottom surface of said sled body.

### Claim 16 (depends on 1)

The mining sled of claim 1 including a sleeve extending along said inner surface of each of said sled sidewalls.

### Claim 17 (depends on 16)

The mining sled of claim 16 wherein said sleeve includes a base and a lip defining a channel therein.

### Claim 18 (depends on 1)

The mining sled of claim 1 including a plow edge on said bed base at said pull-out end of said movable bed and a plow edge on said bed base at said pull-in end of said movable bed.

### Claim 19 (depends on 1)

The mining sled of claim 1 wherein said sled body and said movable bed are constructed of steel.