> On Thu, 28 Feb 2008 10:58:01 -0500, Peter Redstone <[log in to unmask]>
>> You should note that screws, even those used with polished brass
>> straphinges, were always iron.
Right. Indeed I have never seen brass screws from before the second
half of the 19th.c. and even then, the flathead screws in tape hinges
were always blued steel.
I have uploaded a few .jpgs of old screws.
"small hinge" shows typical small flatheads for hinges. Note the chased
thread on an entirely tapered shaft and relatively small head.
"like Stein" shows the sort of screw, albeit 50 years older in this
case, that Stein used for his front batten. Note clearly hand-forged
shaft and hand-filed thread.
"1740" shows a smaller roundhead and a large cylinderhead of the type
used to hold down organ toeboards - when they weren't nailed that is
or wooden screws were used. Handmade and from the same ±1740 source as
the previous screw. This particular organbuilder, Johann Adam Ehrlich,
used wooden screws. So did "my hero" Johann Viktor Gruol.
"flathead" shows a typical flathead close up. Note the bevel on the
edge of the head; hed were always left standing proud by the size of
the bevel. Note also the slightly convex face of the head and in
particular the very narrow slot.