wrote in message
...
On Jan 20, 5:48 pm, "Ed Huntress" wrote:



A taper pin should not be used to hold things together, without some kind
of
clamping or other locating to hold them in place. A screw tapped alongside
of the head of the taper pin, with the screw head overlapping the edge of
the pin, is one way to accomplish this. In much tool work, the pins are
not
subject to strong shear loads so they may hold without a clamp. But they
can
slip out of their holes without a clamp.


Ed Huntress

Morse tapers are designed to release. Jacobs tapers have less taper
and are designed to hold but can be released. I believe that taper
pins are designed to be harder to release than Jacobs tapers.
Standard taper pins have a taper of 1/4 inch per foot.

In my previous post, I mentioned taper pins with a threaded section on
the small end. My mistake. They do not exist. There are taper pins
with a threaded section on the big end so a nut can be used to pull
the pin. Sorry about that.

Dan

You were sort of right the first time! g I wouldn't call them "pins," but
there are tapered fasteners that are threaded on the small end. I have one
in my fastener junk box. I don't know what it was used for; I inherited the
junk box.

I don't think they were used the way we think of tapered pins, but that
concept has been used in various mechanical fasteners, where you need both
the tight fit of a taper and a preload to hold the thing in place, or to
hold parts together.

--
Ed Huntress