No 1 is probably a plumber's device to assist in bending pipes ca 1870-1890
You're right Rog, specifically for bending lead pipes. The heavily waxed cord of wooden beads was inserted to prevent the pipe from kinking while being 'bossed' into shape by the mallet, in the same way a flexible square section steel spring is used for bending copper tubing.I think 'boss' may derive from the Latin for ox as lead plumbers required strength and stamina. Much early lead-work was embossed with heraldic devices, dates and initials.
19 Crochet Hooks early 20th C
Spot on as usual Rog.
21 is a precision drill for picture framing & joinery ca 1860
I defer to your superior knowledge Rog, I had guessed it was a champagne bottle corker and lead-capping device ~
There is a minor clue in the wrench identifier to help with item 20
(7) are different (mainly boxed) sets of handtools. The bottom right set is a cokscrew, hooks,andvarioustyptesof handdrill. English, dates from about 1820. Most of the others are treen containers in two parts; a turned handle which unscrews and contains various tools. They usually date from the late ninteenthcentury/ early twentieth century.
You've got it Mike, 9 multi-tool sets with the bits in the handle to be fitted as required into the chuck. The tenth is a multi-tool where individual tools fold out of the steel loop handle while the rest slash the palm of your hand while you use it.
NUmber ten appearsto be a set of glaziers' tools.
Yes Mike, 4 glass-cutters with slots to slide over various thicknesses of glass to snap it along the scratch-mark previously cut by the cutting wheel/s or as on the upper and lower tools, diamond.