339: Lathe center
340: A hook, meant to be hung over a wall or door.
341: Some sort of locking fastener
342: Spacer for a glass table
343: Reusable "red tag" for locking out switches controlling devices
being worked on
If I remember correctly they're used for small game and bird hunting. A
direct hit will kill or stun a small animal while the outspread tines will
hang the arrow up in the tall grass in case of a miss making the arrow
easier to retrieve.
O.K. Posting from rec.crafts.metalworking again:
339) It looks as though it is a tool for removing/installing
(unscrewing/screwing in) 5C collets in a CNC lathe. (Except
that I'm not sure why the other three slots.)
340) Part of a latch for webbing belts. The two springs on the
sides hold the teeth lightly engaged, and the hooks below
grip more firmly when it is under load. (I think.)
341) Driver for flexible abrasive disks, perhaps? The springs
keep the flexible surface in contact with the workpiece?
342) A puzzle?
343) *This* one, I am sure about. It is a lock-out plate, used
for lockable power switches to allow multiple people working on
a piece of powered equipment to be sure that the power is off.
Each worker puts his own personal lock through one of the six
holes, and any one of the six is sufficient to keep the horns of
the ring engaged with the locking mechanism of the power switch
(called the "disconnect"). It is a safety tool.
344) An old fishing reel, of the design used before the "spinning"
reel came into use.
A little tougher this week, Rob.
339. No clue
340. Can opener thingamabob.
341. No clue
342. Metal anechoic chamber walls.
343. Lockout device for electrical panels. Allows the master switch to
be locked in OFF position. Allows multiple locks to be inserted to
allow multiple parties to be performing maintenance on the machinery fed
by the panel at the same time.
344. Open faced fishing reel.
A brick wall.
It is inserted into the mortar gap with the teeth biting
into the lower brick and the "batwings" pressing
against the upper brick to keep it in place.
Partial credit, it is a hook, not used with a door but on a specific type of
It is used on a bricked wall. The teeth and two wide spread 'antlers' are used
as a compression fit in the horizontal mortar line. The two curvved hooks are
then used as the hanger for ... whatever.
Lee Valley has something similar:
+ TomH + antonomasia-at-canada-dot-com
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
Q: What is the most annoying thing on usenet and in e-mail?