Volume Six - Pre-Victorian to the Present Day - Select Aspects - Reconstruction of Three Tips - 1912 - 17 . . .

Two screens must be provided in the bottom of the shute with screen pans beneath as shewn on the Company's Drawings.

The butt of the shute must be supported by strong suspension chains, and the shaft of the butt must be guided within vertical guide bars, one on either side of the shute shaft, and attached to the front vertical frames of the tip.

There must also be safety chains, hung from the top of the tip, so that the butt of the shute may be secured to such chains at any height necessary, suitable dogs or shackles being provided to engage these chains ; this for the purpose of preventing the butt of the shute from falling should the ordinary lifting chains at any time break or give way.

Each Tip to be equipped with two cranes, placed as shewn on Drawing, one to be capable of lifting 4 tons and the other 6 tons, each to be capable of working its full load through a depth of 80 feet at its full radius.

The cranes to have a maximum radius of not less than 30 feet at an angle of 45 degrees, and be capable of swinging round ashore through an angle of 240 degrees, and to luff back to 12 feet radius.

The cranes to be capable of raising respective loads at the rate of 180 feet per minute. The operations of lifting (or lowering), slewing, and luffing are to be done either simultaneously or separately. The cranes are to be fitted with wire ropes and hooks to Specifications supplied by the T.V.R. Company.

Luffing gear is to be fitted to each crane and must be powerful enough to lift jib when the full load is on the crane.

The jib of each crane is to have a ladder its full length fixed to it to admit of the point sheave being oiled or repaired when necessary. It must also be supplied with a handrail for the security of men working upon the ladder.

On each crane chain there must be a balance weight fixed to pull down the hook, as required, when the crane is not under load.

Two anti-breakage boxes are to be provided, one of one ton capacity and one of two tons capacity, to be made to the Company's Drawings.