This page is under construction and needs many more additions. March 202
Below is shown the ‘Clyburn’s Spanner‘, one that has been with us a long time. It is listed in 1861/2 Catalogue [where it is unusually numbered 020] under ‘Moveable Spanners’ and offered 4″-30″ in lengths capable of accepting 3/8″ -3″ nuts. In 1873 it has #1010. In 1897 it is #1181. In 1909 it is re-numbered back to #020 in sizes 4″-30″, but now accepting 1/2″-3″ nuts. Also in 1909 it appears as a straight handle variety #021. 1921 sees the spanner only offered 6″-30″, with no straight handle option [post war shrinkage]. In 1928 it is again re-numbered to #3420 and again 4″-30″, but now 5/8″ -3″ nuts are accepted. The straight handle appears again #3421. The line is again reduced to 6″-30″ in 1938. Post war in 1959 it still has the same configuration as pre-war but with no straight handle offered. It was de-listed entirely before 1965.
Above is as it appears in 1938.