"Andrew Erickson" wrote:
> 1776 - Model airplane (presumably) glow-plug motor, a relatively
> large
> model.
Not a glow plug engine.
Glow plug needs a battery only until engine starts, then it is self
sustaining which is why they are so popular because of their light
weight.
More likely it is the predecessor of the glow plug engine.
Lew
.
Lew
"Andrew Erickson" wrote:
> I'm no expert, but I believe at least some (indeed generally larger)
> model engines still use spark ignition. Small airplanes these days
> often use electric motors, presumably made practical by advances in
> battery technology (Li-ion cells that have a quite large power
> density
> and can withstand pretty rapid discharge rates).
Not sure what the R/C guys use these days.
I quit building and flying about '53-'54.
At one time must have had at least 20 different engines with names
like:
Arden, OK Herkimer, O&R, Fox, OS(Early Japanese), Spitfire, and more
that have evaded me.
Lew
On Nov 12, 3:21=A0am, "Rob H." <[email protected]> wrote:
> Back at it with another set this week:
>
> http://55tools.blogspot.com/
>
> Rob
1772 looks like a "receiver" for a iron-rimmed wagon wheel. Possibly
to be set in concrete to "park a wagon so it won't roll away?
Norm
On Nov 11, 11:21=A0pm, "Rob H." <[email protected]> wrote:
> Back at it with another set this week:
>
> http://55tools.blogspot.com/
>
> Rob
1776. The gas engine of one of those tether car racers. http://amrca.com/
Thanks
Karl
On 11/12/2009 1:21 AM Rob H. spake thus:
> Back at it with another set this week:
>
> http://55tools.blogspot.com/
So I've got a vested interest in this set, as I'm the one who submitted
#1774. I have no idea what these are, so I'm looking forward to any
enlightening responses.
One additional clue, if it's not obvious from the pictures, is that
these are painted olive drab. Military issue?
--
Who needs a junta or a dictatorship when you have a Congress
blowing Wall Street, using the media as a condom?
- harvested from Usenet
"Lew Hodgett" <[email protected]> wrote in message
news:[email protected]...
>
> "Andrew Erickson" wrote:
>
>> 1776 - Model airplane (presumably) glow-plug motor, a relatively large
>> model.
>
> Not a glow plug engine.
>
> Glow plug needs a battery only until engine starts, then it is self
> sustaining which is why they are so popular because of their light weight.
>
> More likely it is the predecessor of the glow plug engine.
>
> Lew
It's a conventional spark-ignition engine. Through the '40s, at least, most
larger model engines had spark ignition.
--
Ed Huntress
"Andrew Erickson" <[email protected]> wrote in message
news:[email protected]...
> In article <[email protected]>,
> "Ed Huntress" <[email protected]> wrote:
>
>> "Lew Hodgett" <[email protected]> wrote in message
>> news:[email protected]...
>> >
>> > "Andrew Erickson" wrote:
>> >
>> >> 1776 - Model airplane (presumably) glow-plug motor, a relatively large
>> >> model.
>> >
>> > Not a glow plug engine.
>> >
>> > Glow plug needs a battery only until engine starts, then it is self
>> > sustaining which is why they are so popular because of their light
>> > weight.
>
> True about the glow plug engines--marvelously ingenious little gadgets.
> I (wrongly) assumed that the wire would be removed once the engine was
> started, or perhaps thought it led to a more convenient external
> connector for starting. Certainly, not my first misstep in these weekly
> games!
>
>> > More likely it is the predecessor of the glow plug engine.
>> >
>> > Lew
>>
>> It's a conventional spark-ignition engine. Through the '40s, at least,
>> most
>> larger model engines had spark ignition.
>
> I'm no expert, but I believe at least some (indeed generally larger)
> model engines still use spark ignition. Small airplanes these days
> often use electric motors, presumably made practical by advances in
> battery technology (Li-ion cells that have a quite large power density
> and can withstand pretty rapid discharge rates).
Right. In the old days, even fairly small engines used spark ignition. My
uncle, who held several model boat records and built his own engines, had a
supply of miniature spark plugs from Germany during the '30s -- which, of
course, dried up. <g>
But I remember seeing those tiny engines in airplanes during the '50s. The
spark coil was almost as big as the engine, and resided in the fuselage
around where the cockpit would be.
Before glow plugs, the alternative was compression ignition -- pseudo
diesels. Of course, they're still around.
--
Ed Huntress
"Steve R." <[email protected]> wrote in message
news:[email protected]...
>
> "Lew Hodgett" <[email protected]> wrote in message
> news:[email protected]...
>>
>> "Andrew Erickson" wrote:
>>
>>> I'm no expert, but I believe at least some (indeed generally larger)
>>> model engines still use spark ignition. Small airplanes these days
>>> often use electric motors, presumably made practical by advances in
>>> battery technology (Li-ion cells that have a quite large power density
>>> and can withstand pretty rapid discharge rates).
>>
>>
>> Not sure what the R/C guys use these days.
>>
>> I quit building and flying about '53-'54.
>>
>> At one time must have had at least 20 different engines with names like:
>>
>> Arden, OK Herkimer, O&R, Fox, OS(Early Japanese), Spitfire, and more that
>> have evaded me.
>>
>> Lew
>>
>>
>>
>
> I have two Olson & Rice spark ignition engines in my collection, a .60 and
> a .29.
>
>
> Steve R.
FWIW, I have an O&R bicycle motor -- probably around 30 cc or so. It's a bit
noisy for a bike motor but the old sucker still runs great. I don't think it
ever saw much use.
--
Ed Huntress
On 11/14/2009 3:19 PM Zz Yzx spake thus:
> On Thu, 12 Nov 2009 04:21:48 -0500, "Rob H." <[email protected]> wrote:
>
>> Back at it with another set this week:
>>
>> http://55tools.blogspot.com/
>
> 1774 just has the look of something used to build shoes. A "last", or
> something. I dunno.... just guessing.
It does look like that--they look like shoes, in fact--but that's not
their purpose, of that I'm certain.
Nobody seems to have a (good) clue what these things are. Waaaah.
--
Who needs a junta or a dictatorship when you have a Congress
blowing Wall Street, using the media as a condom?
- harvested from Usenet
On Nov 12, 4:21=A0am, "Rob H." <[email protected]> wrote:
> Back at it with another set this week:
>
> http://55tools.blogspot.com/
>
> Rob
1771 combination egg candler and weight scale
1772 water trough for finding holes in skinny tires
1773 handle remover - for faucet stems?
1774
1775
1776 model boat engine? model airplane engine?
Dave
"Rob H." <[email protected]> wrote in message
news:[email protected]...
> Back at it with another set this week:
>
> http://55tools.blogspot.com/
>
>
> Rob
1776 is a spark ignition model airplane engine.
Steve R.
"Lew Hodgett" <[email protected]> wrote in message
news:[email protected]...
>
> "Andrew Erickson" wrote:
>
>> I'm no expert, but I believe at least some (indeed generally larger)
>> model engines still use spark ignition. Small airplanes these days
>> often use electric motors, presumably made practical by advances in
>> battery technology (Li-ion cells that have a quite large power density
>> and can withstand pretty rapid discharge rates).
>
>
> Not sure what the R/C guys use these days.
>
> I quit building and flying about '53-'54.
>
> At one time must have had at least 20 different engines with names like:
>
> Arden, OK Herkimer, O&R, Fox, OS(Early Japanese), Spitfire, and more that
> have evaded me.
>
> Lew
>
>
>
I have two Olson & Rice spark ignition engines in my collection, a .60 and a
.29.
Steve R.
Alexander Thesoso wrote:
> 1771 Guess... Egg scale and perhaps the thing on the right is a
> candle (lamp) to sort and grade eggs.
>
> 1772 Can't even make one guess... gotta make two. Either an oil drip
> sump, to catch oil drippings from a flywheel or gear, or a water pan
> to wet a grindstone.
>
>
>
> "Rob H." <[email protected]> wrote in message
> news:[email protected]...
>> Back at it with another set this week:
>>
>> http://55tools.blogspot.com/
>>
>>
>> Rob
1772 is a dip tank for finding leaks in tires . If you overfill it you're
going to have wet feet ...
--
Snag
wannabe digital machinist
"Rob H." <[email protected]> fired this volley in
news:[email protected]:
> http://55tools.blogspot.com/
1771 egg sizer and candler
E Z Peaces <[email protected]> fired this volley in news:hdiql8$dla$2
@news.eternal-september.org:
> It looks as if it might have a displacement similar to a string trimmer,
> but what small engine would have a big chrome exhaust pipe?
In the early days, pylon racers.
Interesting factoid: A lot of the larger displacement model engines are
going back to spark ignition. The solid-state ignition similar to what
Briggs came up with for theirs works nicely in the modeling sizes.
LLoyd
In article <[email protected]>,
"Ed Huntress" <[email protected]> wrote:
> "Lew Hodgett" <[email protected]> wrote in message
> news:[email protected]...
> >
> > "Andrew Erickson" wrote:
> >
> >> 1776 - Model airplane (presumably) glow-plug motor, a relatively large
> >> model.
> >
> > Not a glow plug engine.
> >
> > Glow plug needs a battery only until engine starts, then it is self
> > sustaining which is why they are so popular because of their light weight.
True about the glow plug engines--marvelously ingenious little gadgets.
I (wrongly) assumed that the wire would be removed once the engine was
started, or perhaps thought it led to a more convenient external
connector for starting. Certainly, not my first misstep in these weekly
games!
> > More likely it is the predecessor of the glow plug engine.
> >
> > Lew
>
> It's a conventional spark-ignition engine. Through the '40s, at least, most
> larger model engines had spark ignition.
I'm no expert, but I believe at least some (indeed generally larger)
model engines still use spark ignition. Small airplanes these days
often use electric motors, presumably made practical by advances in
battery technology (Li-ion cells that have a quite large power density
and can withstand pretty rapid discharge rates).
--
Andrew Erickson
"He is no fool who gives what he cannot keep to gain that which he cannot
lose." -- Jim Elliot
In article <[email protected]>, "Rob H." <[email protected]>
wrote:
> Back at it with another set this week:
>
> http://55tools.blogspot.com/
Quick guesses:
1771 - A form of ballistic pendulum, perhaps, to measure the potency of
gunpowder? If so, I'd assume the numbers are some scale of gunpowder
potency.
1772 - Clearly this is a metal trough shaped like a portion of a rather
skinny cylinder. Perhaps it is or was used to locate leaks in inner
tubes, by filling the trough with water and looking for bubbles whilst
immersing different parts of the tube. Obviously, it would work best
for skinny tires, such as bicycle, motorcycle, or old cars have.
1773 - Looks to be a small specialized press of some sort, possibly for
the insertion or removal of bushings, engine valve guides, or similar
things.
1774 - Early ill-favored ski binding? No real ideas.
1775 - This appears to be a bracket to hold some cylindrical unit in
place, such as a fire extinguisher. Presumably, the knobs inside the
ring interlock with depressions in whatever is held. I do suspect
appearances may be deceiving here, though, and this is not actually such
a bracket.
1776 - Model airplane (presumably) glow-plug motor, a relatively large
model. These are rather amazing little devices, I think, since they are
diesel two stroke motors and are thereby about as simple as an explosive
engine can be--no valves, no spark timing gear, often (unlike this one)
no muffler or exhaust system beyond ports in the sides of the cylinder
wall.
Now to read other guesses.
--
Andrew Erickson
"He is no fool who gives what he cannot keep to gain that which he cannot
lose." -- Jim Elliot
1771 Guess... Egg scale and perhaps the thing on the right is a candle
(lamp) to sort and grade eggs.
1772 Can't even make one guess... gotta make two. Either an oil drip sump,
to catch oil drippings from a flywheel or gear, or a water pan to wet a
grindstone.
"Rob H." <[email protected]> wrote in message
news:[email protected]...
> Back at it with another set this week:
>
> http://55tools.blogspot.com/
>
>
> Rob
Rob H. wrote:
> Back at it with another set this week:
>
> http://55tools.blogspot.com/
>
>
> Rob
1775 could be a jack for burying drain pipe. The ditch would be deeper
than necessary. You would fit the high end of a pipe, use a level to
determine how many inches to raise the low end, raise it, and tamp earth
under the pipe.
Swinging the handle from straight up to straight down would raise the
hoop about five inches. Using the bolt holes farthest from the hoop
would place the hoop near the foot of the jack with the handle straight
up.
Before raising the pipe, the bolt holes would allow adjustment of the
jack height in increments of two inches. Shims under the jack would
allow smaller adjustments.
Drain pipes may be brittle. The studs in the hoop could be to keep a
pad from sliding.
"E Z Peaces" <[email protected]> wrote in message
news:[email protected]...
> Rob H. wrote:
>> Back at it with another set this week:
>>
>> http://55tools.blogspot.com/
>>
>>
>> Rob
>
> 1775 could be a jack for burying drain pipe...
Nope, it's not for drain pipe, no one has guessed correctly yet for this
device.
Rob
<[email protected]> wrote in message
news:3c1ed4ca-0475-4c3e-ad50-da7cf2475f8c@v15g2000prn.googlegroups.com...
On Nov 11, 11:21 pm, "Rob H." <[email protected]> wrote:
> Back at it with another set this week:
>
> http://55tools.blogspot.com/
>
> Rob
>1776. The gas engine of one of those tether car racers. http://amrca.com/
This answer is correct, and that's a great link, thanks.
Rob
"Rob H." <[email protected]> wrote in message
news:[email protected]...
>
> "E Z Peaces" <[email protected]> wrote in message
> news:[email protected]...
>> Rob H. wrote:
>>> Back at it with another set this week:
>>>
>>> http://55tools.blogspot.com/
>>>
#1771 A thermometer (Celcius units), with a candle-operated lighting???
Just a shot in the dark... ; )
Bill
Rob H. wrote:
>
> "E Z Peaces" <[email protected]> wrote in message
> news:[email protected]...
>> Rob H. wrote:
>>> Back at it with another set this week:
>>>
>>> http://55tools.blogspot.com/
>>>
>>>
>>> Rob
>>
>> 1775 could be a jack for burying drain pipe...
>
>
> Nope, it's not for drain pipe, no one has guessed correctly yet for this
> device.
>
> Rob
It appears made to lift a wheel or shaft from ground level to 5" or at
the highest setting, from 6" to 11". It looks good for 300 pounds.
The ring looks big enough to hold the metal band around the hub of a
wooden wagon wheel. In the days of wooden wheels, I imagine wheels
often sunk too deep for a horse to pull, sinking while underway or while
the vehicle was parked. Wheels could also get stuck between rocks.
This could be a tool for a farmer to lift a wheel enough to put gravel
under it and free the vehicle. Before lifting, I would want to chain
the ring to the spokes so it wouldn't slip off. The studs may have had
something to do with a mechanism to hold the jack on the wheel.
If the wheel needed to be raised to ground level, the jack would be
limited to wheels of 30" or less. If the farmer had a stable support
for the jack, it could work for taller wheels.
Andrew Erickson wrote:
> In article <[email protected]>,
> "Ed Huntress" <[email protected]> wrote:
>
>> "Lew Hodgett" <[email protected]> wrote in message
>> news:[email protected]...
>>> "Andrew Erickson" wrote:
>>>
>>>> 1776 - Model airplane (presumably) glow-plug motor, a relatively large
>>>> model.
>>> Not a glow plug engine.
>>>
>>> Glow plug needs a battery only until engine starts, then it is self
>>> sustaining which is why they are so popular because of their light weight.
>
> True about the glow plug engines--marvelously ingenious little gadgets.
> I (wrongly) assumed that the wire would be removed once the engine was
> started, or perhaps thought it led to a more convenient external
> connector for starting. Certainly, not my first misstep in these weekly
> games!
>
>>> More likely it is the predecessor of the glow plug engine.
>>>
>>> Lew
>> It's a conventional spark-ignition engine. Through the '40s, at least, most
>> larger model engines had spark ignition.
>
> I'm no expert, but I believe at least some (indeed generally larger)
> model engines still use spark ignition. Small airplanes these days
> often use electric motors, presumably made practical by advances in
> battery technology (Li-ion cells that have a quite large power density
> and can withstand pretty rapid discharge rates).
>
It looks as if it might have a displacement similar to a string trimmer,
but what small engine would have a big chrome exhaust pipe?
"Rob H." <[email protected]> wrote in message
news:[email protected]...
>
> <[email protected]> wrote in message
> news:3c1ed4ca-0475-4c3e-ad50-da7cf2475f8c@v15g2000prn.googlegroups.com...
> On Nov 11, 11:21 pm, "Rob H." <[email protected]> wrote:
>> Back at it with another set this week:
>>
>> http://55tools.blogspot.com/
>>
>> Rob
>
>>1776. The gas engine of one of those tether car racers. http://amrca.com/
>
>
> This answer is correct, and that's a great link, thanks.
>
>
> Rob
Henry Kissinger was a lot younger when the photos were taken ...
>>> 1775 could be a jack for burying drain pipe...
>>
>>
>> Nope, it's not for drain pipe, no one has guessed correctly yet for this
>> device.
>>
>> Rob
>
> It appears made to lift a wheel or shaft from ground level to 5" or at the
> highest setting, from 6" to 11". It looks good for 300 pounds.
>
> The ring looks big enough to hold the metal band around the hub of a
> wooden wagon wheel...
You've got the right idea but it's not for wagon wheels.
Rob
Rob H. wrote:
>
>>>> 1775 could be a jack for burying drain pipe...
>>>
>>>
>>> Nope, it's not for drain pipe, no one has guessed correctly yet for
>>> this device.
>>>
>>> Rob
>>
>> It appears made to lift a wheel or shaft from ground level to 5" or at
>> the highest setting, from 6" to 11". It looks good for 300 pounds.
>>
>> The ring looks big enough to hold the metal band around the hub of a
>> wooden wagon wheel...
>
>
> You've got the right idea but it's not for wagon wheels.
>
>
> Rob
How about raising a pulley to change a drive belt?
Rob H. wrote:
>
>>> http://55tools.blogspot.com/
>
>
>> 1772 looks like a "receiver" for a iron-rimmed wagon wheel. Possibly
>> to be set in concrete to "park a wagon so it won't roll away?
>
>> Norm
>
>
> This one _is_ for wagon wheels but not for setting in concrete to
> prevent a roll away.
>
>
> Rob
How about treating the fellies with oil?
E Z Peaces wrote:
> Rob H. wrote:
>>
>>>>> 1775 could be a jack for burying drain pipe...
>>>>
>>>>
>>>> Nope, it's not for drain pipe, no one has guessed correctly yet for
>>>> this device.
>>>>
>>>> Rob
>>>
>>> It appears made to lift a wheel or shaft from ground level to 5" or
>>> at the highest setting, from 6" to 11". It looks good for 300 pounds.
>>>
>>> The ring looks big enough to hold the metal band around the hub of a
>>> wooden wagon wheel...
>>
>>
>> You've got the right idea but it's not for wagon wheels.
>>
>>
>> Rob
>
> How about raising a pulley to change a drive belt?
Uh-oh, you can't put a ring around a pulley with a belt on it. Can I
retract my guess?
Rob H. wrote:
>
>>>> 1775 could be a jack for burying drain pipe...
>>>
>>>
>>> Nope, it's not for drain pipe, no one has guessed correctly yet for
>>> this device.
>>>
>>> Rob
>>
>> It appears made to lift a wheel or shaft from ground level to 5" or at
>> the highest setting, from 6" to 11". It looks good for 300 pounds.
>>
>> The ring looks big enough to hold the metal band around the hub of a
>> wooden wagon wheel...
>
>
> You've got the right idea but it's not for wagon wheels.
>
>
> Rob
An irrigation gate?
In movies, the flow from a water tower to supply steam locomotives was
turned on and off by pulling a chain to lower and raise the spout.
Apparently they had the technology to maintain a seal at the base of a
spout that swung up and down 90 degrees.
Now suppose you're a 19th-century farmer who wants to irrigate an
orchard. You run a pipe or hose from the reservoir to the orchard and
put the end in the ring of this device. Perhaps the studs in the ring
fit depressions in the end of the pipe to prevent slipping.
You can determine the level in the reservoir by lowering the end of the
pipe until water begins to flow. Now, if you know the area of the
reservoir, you can have a calculated amount of water delivered
automatically by lowering the end of the pipe a certain distance. At
any time, you can shut off the water by using the lever to raise the end
of the pipe five inches.
Besides irrigation, it could be used to add a certain amount of water to
a livestock tank while the farmer goes about his business. It can be
operated from the delivery site and won't be affected by dirt or grit.
>> This one _is_ for wagon wheels but not for setting in concrete to
>> prevent a roll away.
>>
>>
>> Rob
>
> How about treating the fellies with oil?
Yes, that's it, to prevent the wheels from drying out.
No luck so far on the two unidentified items, but answers for the rest of
the set can be seen here:
http://answers310a.blogspot.com/
Rob
Rob H. wrote:
>
>>> This one _is_ for wagon wheels but not for setting in concrete to
>>> prevent a roll away.
>>>
>>>
>>> Rob
>>
>> How about treating the fellies with oil?
>
>
> Yes, that's it, to prevent the wheels from drying out.
>
> No luck so far on the two unidentified items, but answers for the rest
> of the set can be seen here:
>
> http://answers310a.blogspot.com/
>
>
> Rob
1775: The patent you showed, 1,129,494, shows how it worked, but I think
the patent for this item is 876,824, by Joseph Calvin Moore. He got
the patent in 1908. In 1909 he applied for a reissue, when was RE13251.
He said a rubber hose was to be used for padding.
The stirrup of 1775 has extensions which would all it to pick up a hub
from ground level. Moore's patent drawing shows no such extensions.
Patent 1,238,591 shows a device intended to lift hubs from ground level;
it's for mired cars.
I wonder if 1775 is an earlier or later version of Moore's storage jack,
and this one was intended to lift a wheel from mud. Perhaps it was
somebody else's mud jack, and Moore adapted it as a storage jack.
"Lew Hodgett" <[email protected]> wrote in message
news:[email protected]...
>
> "Steve R." wrote:
>
>> I have two Olson & Rice spark ignition engines in my collection, a .60
>> and a .29.
>
> Had a 0.60 that I was going to use to build an air compressor to shoot
> dope but never got around to it.
>
> For a model engine of that time, it was a beast.
>
>
> Lew
>
>
>
(smacks head!) Oh, That kind of dope!!
>>
>> http://answers310a.blogspot.com/
>>
> 1775: The patent you showed, 1,129,494, shows how it worked, but I think
> the patent for this item is 876,824, by Joseph Calvin Moore. He got the
> patent in 1908. In 1909 he applied for a reissue, when was RE13251. He
> said a rubber hose was to be used for padding.
Looks like I should have read the patent! Someone had told me that a piece
of leather was missing from the ring, this information was based on another
jack which had leather on it for padding. Yes, I used the other patent
because it had better drawings, I just updated the answer page to include
both patents and to correct my answer for what was held by the studs in the
ring.
Thanks for the help,
Rob
Rob H. wrote:
>
>>>> 1775 could be a jack for burying drain pipe...
>>>
>>>
>>>
>>> Nope, it's not for drain pipe, no one has guessed correctly yet for
>>> this device.
>>>
>>> Rob
>>
>>
>> It appears made to lift a wheel or shaft from ground level to 5" or at
>> the highest setting, from 6" to 11". It looks good for 300 pounds.
>>
>> The ring looks big enough to hold the metal band around the hub of a
>> wooden wagon wheel...
>
>
>
> You've got the right idea but it's not for wagon wheels.
>
>
> Rob
.
Emery wheel trough.
Tom
On Thu, 12 Nov 2009 04:21:48 -0500, "Rob H." <[email protected]> wrote:
>Back at it with another set this week:
>
>http://55tools.blogspot.com/
>
>
>Rob
1774 just has the look of something used to build shoes. A "last", or
something. I dunno.... just guessing.
-Zz
On 2009-11-12, Rob H. <[email protected]> wrote:
> Back at it with another set this week:
>
> http://55tools.blogspot.com/
O.K. Posting from Rec.crafts.metalworking as always.
1771) My guess at this is a combination egg scale and egg
candler (the light in the cylinder to the right). I
expect a wire from the ceramic base, but it could be some kind
of flame powered lamp too.
As for the units -- something once used to grade eggs. Not the
Haugh units, which require the egg to be broken. Ounces are
unlikely to go that high -- except perhaps for an ostrich egg.
Hmm ... one Google hit shows them as being classified by ounces
per dozen, so 40 oz/dozen is perhaps within reason.
1772) Looks like it might hold a smaller barrel so it can be tipped
to drain fully.
Or -- it might be for checking motorcycle (and really old
automobile) tires for leaks. Fill it with water, submerge a
portion of the wheel, and rotate while looking for bubbles.
1773) A press for assembling something like perhaps a roller chain
for a motorcycle? Or for pressing on or off a bearing? Stanley
made more woodworking tools and not much in the way of
automotive tools, but who knows?
1774) Perhaps for dropping aircraft external fuel tanks before
entering combat to improve maneuverability?
1775) stand for smaller compressed gas tanks Oxygen or fuel gasses)?
1776) A model engine -- and what it is mounted in looks too heavy
for a model aircraft, so at a guess I will say that it was for
a tether racing car -- which were popular until too many of the
tethers broke and too many bystanders were seriously hurt or
even killed.
I seem to associate the name "Wall" with the cars for some
reason.
Now to see what others have suggested.
Enjoy,
DoN.
--
Email: <[email protected]> | Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---