CHAINS STANDARD IS REVISED • A revision of BS 5594
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Leaf chains, devises and sheaves, just published, includes an extension of the LH series of chains and will be of particular benefit to those producing lifting devices, particularly fork lift trucks and similar machines.
The revision is identical with ISO 4347 and has been prepared after examining the possibility of having one single series of chains derived directly from the short-pitch precision chains defined in ISO 606 (BS 228). However, it has become clear, says the British Standards Institution, that standardisation of chains of the BL series, from American Standard ANSI B29-8, which are universally used, would also be desirable.
Consequently, the revised standard includes two series of chains, the one derived from the American Standard being designated by the symbol LH, and the one from ISO 606 (BS 228), suffix 13, designated by the symbol LL. The dimensions are shown in inches and millimetres; the latter are conversions of the basic inch dimensions.
BS 5594: 1978 is now withdrawn.
Copies of BS 5594 may be obtained from the Sales Department, British Standards Institution, Linford Wood, Milton Keynes MK14 6LE. Price: £22 (£8.80 to BSI subscribing members).