I found one of these odd-looking tools at a garage sale, and was curious
what it was meant to do.

Bit Control for Percussive Tools
http://www.google.com/patents?id=NTh...T ENT+2328201

In the area of #25 on the drawing, there is a spring captured between two
washers, instead of what's shown, so this may have been a design revision.

The tapered hole for the tool is about the size of a Morse #1, but I haven't
checked or measured it.
The tool appears to be unused, although the handle part is a little rusty.
The handle allows the operator to rotate/steer the cutting edge of the tool
as it's being impacted.

I've had a desire to steer air chisels while cutting sheetmetal on numerous
occassions (and managed to do so with a leather-gloved hand and wide flat
chisels), and this sort of accessory would provide that type of control for
the original tools with tapered shanks.

I don't recall ever seeing chisels or chippers with a taper at the top end,
although such tools are commonly modified for manual use with a hammer.

The inventor is shown as Alonzo G Decker Jr, who was likely the B&D
Manufacturing Co founder's son.
It seems that B&D Manufacturing Co is credited with the first electric
powered tool, Patent 1245860 1917, and the pioneer of the pistol-shaped
power drill.

Markings:
No. 22587
U. S. Patent 2328201
2413273

--
WB
..........

On May 27, 2:19*am, "Wild_Bill" wrote:
I found one of these odd-looking tools at a garage sale, and was curious
what it was meant to do.

Bit Control for Percussive Toolshttp://www.google.com/patents?id=NThrAAAAEBAJ&pg=PP3&lpg=PP3&dq=U.S.+...

In the area of #25 on the drawing, there is a spring captured between two
washers, instead of what's shown, so this may have been a design revision..

The tapered hole for the tool is about the size of a Morse #1, but I haven't
checked or measured it.
The tool appears to be unused, although the handle part is a little rusty..
The handle allows the operator to rotate/steer the cutting edge of the tool
as it's being impacted.

I've had a desire to steer air chisels while cutting sheetmetal on numerous
occassions (and managed to do so with a leather-gloved hand and wide flat
chisels), and this sort of accessory would provide that type of control for
the original tools with tapered shanks.

I don't recall ever seeing chisels or chippers with a taper at the top end,
although such tools are commonly modified for manual use with a hammer.

The inventor is shown as Alonzo G Decker Jr, who was likely the B&D
Manufacturing Co founder's son.
It seems that B&D Manufacturing Co is credited with the first electric
powered tool, Patent 1245860 1917, and the pioneer of the pistol-shaped
power drill.

Markings:
No. 22587
U. S. Patent 2328201
2413273

--
WB
.........

I had an older B&D electric impact drill (percussion only) that used
“A” and “B” taper masonry bits -- mostly star drill bits.
http://www.icscuttingtools.com/catalog/page_154.pdf I don’t know how
they compare to Morse tapers.
A former co-worker would always disparagingly refer to big old vintage
B&D electric drills as “Black and Decker Pecker Wreckers”. Those
things could really spin you around if you weren’t careful. g

On Thu, 27 May 2010 20:23:12 -0700 (PDT), "Denis G."
wrote:

On May 27, 2:19*am, "Wild_Bill" wrote:
I found one of these odd-looking tools at a garage sale, and was curious
what it was meant to do.

Bit Control for Percussive Toolshttp://www.google.com/patents?id=NThrAAAAEBAJ&pg=PP3&lpg=PP3&dq=U.S.+...

In the area of #25 on the drawing, there is a spring captured between two
washers, instead of what's shown, so this may have been a design revision.

The tapered hole for the tool is about the size of a Morse #1, but I haven't
checked or measured it.
The tool appears to be unused, although the handle part is a little rusty.
The handle allows the operator to rotate/steer the cutting edge of the tool
as it's being impacted.

I've had a desire to steer air chisels while cutting sheetmetal on numerous
occassions (and managed to do so with a leather-gloved hand and wide flat
chisels), and this sort of accessory would provide that type of control for
the original tools with tapered shanks.

I don't recall ever seeing chisels or chippers with a taper at the top end,
although such tools are commonly modified for manual use with a hammer.

The inventor is shown as Alonzo G Decker Jr, who was likely the B&D
Manufacturing Co founder's son.
It seems that B&D Manufacturing Co is credited with the first electric
powered tool, Patent 1245860 1917, and the pioneer of the pistol-shaped
power drill.

Markings:
No. 22587
U. S. Patent 2328201
2413273

--
WB
.........

I had an older B&D electric impact drill (percussion only) that used
“A” and “B” taper masonry bits -- mostly star drill bits.
http://www.icscuttingtools.com/catalog/page_154.pdf I don’t know how
they compare to Morse tapers.
A former co-worker would always disparagingly refer to big old vintage
B&D electric drills as “Black and Decker Pecker Wreckers”. Those
things could really spin you around if you weren’t careful. g


Indeed. I have one of them..works ok, but the big Milwaukee rotary
hammer works far far far better. And if you hang the bit...you DO go
for a ride.

Gunner

--


"First Law of Leftist Debate
The more you present a leftist with factual evidence
that is counter to his preconceived world view and the
more difficult it becomes for him to refute it without
losing face the chance of him calling you a racist, bigot,
homophobe approaches infinity.

This is despite the thread you are in having not mentioned
race or sexual preference in any way that is relevant to
the subject." Grey Ghost

Thanks for the direction. I found descriptions of the A and B taper masonry
drills.

A: 1" in 20 taper
B: 1" in 10 taper

http://www.icscuttingtools.com/Mason..._hammer_drills

I've seen hex and splined shanks, but was unaware of tapered ones.

--
WB
..........


"Denis G." wrote in message
...

I had an older B&D electric impact drill (percussion only) that used
“A” and “B” taper masonry bits -- mostly star drill bits.
http://www.icscuttingtools.com/catalog/page_154.pdf I don’t know how
they compare to Morse tapers.
A former co-worker would always disparagingly refer to big old vintage
B&D electric drills as “Black and Decker Pecker Wreckers”. Those
things could really spin you around if you weren’t careful. g

On May 28, 12:01*am, Gunner Asch wrote:
On Thu, 27 May 2010 20:23:12 -0700 (PDT), "Denis G."
wrote:





On May 27, 2:19*am, "Wild_Bill" wrote:
I found one of these odd-looking tools at a garage sale, and was curious
what it was meant to do.

Bit Control for Percussive Toolshttp://www.google.com/patents?id=NThrAAAAEBAJ&pg=PP3&lpg=PP3&dq=U.S.+...

In the area of #25 on the drawing, there is a spring captured between two
washers, instead of what's shown, so this may have been a design revision.

The tapered hole for the tool is about the size of a Morse #1, but I haven't
checked or measured it.
The tool appears to be unused, although the handle part is a little rusty.
The handle allows the operator to rotate/steer the cutting edge of the tool
as it's being impacted.

I've had a desire to steer air chisels while cutting sheetmetal on numerous
occassions (and managed to do so with a leather-gloved hand and wide flat
chisels), and this sort of accessory would provide that type of control for
the original tools with tapered shanks.

I don't recall ever seeing chisels or chippers with a taper at the top end,
although such tools are commonly modified for manual use with a hammer..

The inventor is shown as Alonzo G Decker Jr, who was likely the B&D
Manufacturing Co founder's son.
It seems that B&D Manufacturing Co is credited with the first electric
powered tool, Patent 1245860 1917, and the pioneer of the pistol-shaped
power drill.

Markings:
No. 22587
U. S. Patent 2328201
2413273

--
WB
.........

I had an older B&D electric impact drill (percussion only) that used
“A” and “B” taper masonry bits -- mostly star drill bits.
http://www.icscuttingtools.com/catalog/page_154.pdf*I don’t know how
they compare to Morse tapers.
A former co-worker would always disparagingly refer to big old vintage
B&D electric drills as “Black and Decker Pecker Wreckers”. * Those
things could really spin you around if you weren’t careful. *g

Indeed. I have one of them..works ok, but the big Milwaukee rotary
hammer works far far far better. * And if you hang the bit...you DO go
for a ride.

Gunner

--

"First Law of Leftist Debate
The more you present a leftist with factual evidence
that is counter to his preconceived world view and the
more difficult it becomes for him to refute it without
losing face the chance of him calling you a racist, bigot,
homophobe approaches infinity.

This is despite the thread you are in having not mentioned
race or sexual preference in any way that is relevant to
the subject." *Grey Ghost- Hide quoted text -

- Show quoted text -

I would always worry about accidently hitting the trigger lock on
those things before the inevitable would happen. As long as you got
clear you could watch the "self-winding cord mode" activate and stop
the drill’s devil dance. No doubt that was a planned failsafe feature.

On Fri, 28 May 2010 03:14:17 -0400, "Wild_Bill"
wrote:

Thanks for the direction. I found descriptions of the A and B taper masonry
drills.

A: 1" in 20 taper
B: 1" in 10 taper

http://www.icscuttingtools.com/Mason..._hammer_drills

I've seen hex and splined shanks, but was unaware of tapered ones.

And if you have a lathe and an adapter for your hammer drill that
accepts taper shank bits you can cut a taper on most any bit and use
it in your drill.

--
Ned Simmons