This week's set has been posted:

http://55tools.blogspot.com/


Rob

1489 Mapmaking device to draw contour lines from stereo-pair aerial
photographs. The cartographer mounts a pair of photographs on the flat
surfaces, aligns them, then looks in to see a stereo view. He can then move
the pen along what seems to be a constant height.

1492 A couple of hypodermic syringe plungers?

1493 Guess... If there were mounting holes, the pieces would form a hinge
(left piece down) so I'll guess they are used to form a temporary hinge with
the pieces clamped on to the parts of a work in progress in a machine shop.

1294 From the size and scale (the handle is between 1 and 2 inches long) I'd
guess this is a model of a heating furnace. Patent model?




"Rob H." wrote in message
...
This week's set has been posted:

http://55tools.blogspot.com/


Rob

On Dec 18, 6:50*pm, "Rob H." wrote:
This week's set has been posted:

http://55tools.blogspot.com/

Rob

The only one I recognize is the coal furnace.

--riverman

On Dec 18, 7:41*pm, humunculus wrote:
On Dec 18, 6:50*pm, "Rob H." wrote:

This week's set has been posted:

http://55tools.blogspot.com/

Rob

The only one I recognize is the coal furnace.

It's a salesman's model.

http://tinyurl.com/3zg7f4

-riverman

On Thu, 18 Dec 2008 03:50:46 -0800 (PST), humunculus wrote:

On Dec 18, 7:41*pm, humunculus wrote:
On Dec 18, 6:50*pm, "Rob H." wrote:

This week's set has been posted:

http://55tools.blogspot.com/

Rob

The only one I recognize is the coal furnace.

It's a salesman's model.

http://tinyurl.com/3zg7f4

I presume you're talking about #1494?

#1490 also looks as though it's designed to heat something and put out
hot air. I would have guessed shoes/boots that needed drying were to be
hung from the hook on the end, but there's only room to hang one thing
and, at nine inches tall, this device is too small for that.

--
Ted S.
fedya at hughes dot net
Now blogging at http://justacineast.blogspot.com

1493 weld on hinge.
http://www.hardwaresource.com/Store_...l3.asp?Cat=132

Third item down. I've used them in several sizes.

"Alexander Thesoso" wrote in message
...
1489 Mapmaking device to draw contour lines from stereo-pair aerial
photographs. The cartographer mounts a pair of photographs on the flat
surfaces, aligns them, then looks in to see a stereo view. He can then
move the pen along what seems to be a constant height.

1492 A couple of hypodermic syringe plungers?

Yep, I have some old syringes that have glass plungers, In fact there are no
seals on the plungers, they fit the glass barrel snugly enough that they
don't leak.

basilisk

1493 Guess... If there were mounting holes, the pieces would form a hinge
(left piece down) so I'll guess they are used to form a temporary hinge
with the pieces clamped on to the parts of a work in progress in a machine
shop.

1294 From the size and scale (the handle is between 1 and 2 inches long)
I'd guess this is a model of a heating furnace. Patent model?




"Rob H." wrote in message
...
This week's set has been posted:

http://55tools.blogspot.com/


Rob

rcm

#1494 is a model (or salesman's sample as previously suggested), and
definitely of a coal furnace. I've fed such a beast.
Below the fuel door is a covered water reservoir for generating some
humidity, I believe.

The ring going around the "floor" of the model is where the sheetmetal
jacket would fasten, joining to the sides of the cast iron
faceplate/controls panel. The diameter of the beast was over 6 feet, but not
more than 8 feet, to the best of my recollection.

The sheetmetal jacket was cylindrical, but had a tapered section at the top,
for about 25% of the overall height. The round heat distribution ducts, with
joints neatly wrapped with asbestos tape, were cut into the tapered "crown"
section to distribute heat to various remote locations in the structure.

On the fuel door, and below the fuel door, there were a couple of small
damper doors that could be operated remotely, by a chain control upstairs in
the structure.

The little crank laying on the right side of the display model was for
rocking/rotating the large grate bars to let the clinkers fall thru to the
bottom, where they were shoveled out and put into buckets to be carried
outdoors.
The vertical handle was a sort of shaker, maybe intended to break up the bed
of hot coals, or to assist in cleaning out the ashes.

I don't clearly recall the cold air return path, but there were the commonly
seen tinned joist spaces and the wide cold air registers in the first story
floors.

The combustion gasses and smoke went out thru one of the big passageways in
that big donut-looking heat exchanger on top (to a damper before the chimney
connection, and the other protrusion was a cleanout door.

Everything except the sheetmetal jacket, crown and ducts was cast iron, and
all of the cast parts were heat exchanging surfaces.

--
WB
..........
metalworking projects
www.kwagmire.com/metal_proj.html


"Rob H." wrote in message
...
This week's set has been posted:

http://55tools.blogspot.com/


Rob

"Bill Marrs" wrote in message
...
1493 weld on hinge.
http://www.hardwaresource.com/Store_...l3.asp?Cat=132

Third item down. I've used them in several sizes.


Thanks for the link, a couple people had mentioned that it was a hinge but
the link really closes the book on this one.


Rob

"basilisk" wrote in message
...

"Alexander Thesoso" wrote in message
...
1489 Mapmaking device to draw contour lines from stereo-pair aerial
photographs. The cartographer mounts a pair of photographs on the flat
surfaces, aligns them, then looks in to see a stereo view. He can then
move the pen along what seems to be a constant height.

1492 A couple of hypodermic syringe plungers?

Yep, I have some old syringes that have glass plungers, In fact there are
no
seals on the plungers, they fit the glass barrel snugly enough that they
don't leak.


Looks like this is correct, I've found a few on the web that appear very
similar.

Thanks,
Rob

The little crank laying on the right side of the display model was for
rocking/rotating the large grate bars to let the clinkers fall thru to the
bottom, where they were shoveled out and put into buckets to be carried
outdoors.


The link below has a photo of the grate as seen through the open door at the
bottom of the furnace, the handle attaches to the part at the front left,
your description of this mechanism sounds good to me.

http://img.photobucket.com/albums/v8...pic1494ngb.jpg


The handle can be seen in the bottom right of the third photo:

http://55tools.blogspot.com/



Rob

In article , Rob H. wrote:
This week's set has been posted:

http://55tools.blogspot.com/

1489: Some grad student's way of finally seeing those darned "hidden
eye" images.

1490: Ye Olde Fyre Starter
1491: Difficult to use rubber stamp
1492: In Texas, laboratory glassware is illegal to possess without a
license because it can be used for making drugs. Perhaps
England has a similar rule, and these are new drug-proof
glassware.

1493: TP holder
1494: Portable heater/humidifier.


--
It's times like these which make me glad my bank is Dial-a-Mattress

"Rob H." wrote in
:

This week's set has been posted:

http://55tools.blogspot.com/


Rob


1490 looks like some elaborate mouse trap. Not sure why they
didn't just give the mouse an easy way up instead of the
perforated sheet metal though...

Larry

In article , "Rob H."
wrote:
This week's set has been posted:

http://55tools.blogspot.com/

My guesses:

1489 - Machine for generating perspective drawings from isometric
drawings/photos, or some similar purpose. Looking in the two eyepieces
and moving the pencil around would, I assume, line up spots on documents
on the two platforms, and that would indicate the correct spot to mark
the feature on the "output" drawing.

1490 - Maybe a moustrap, the little critter climbing up the perforated
tube and then being unable to escape from the cup? But it seems a bit
small for that to work well.

1491 - Well, it clamps onto a thin surface or similar, and then,
ummm...ah...erm...well, I guess it's so obvious what you do that I
needn't bother explaining it.

1492 - Containers for reagents nos. 1 and 11.

1493 - Paperweight and runaway pencil catcher for the drawing board.

1494 - Cheating and googling revealed that this is a sales model of a
Williamson Model A furnace, which I presume was a coal-fired domestic
hot air furnace. In the basement of my house is a Williamson Oilsaver
furnace of slightly more recent vintage (but still forty or so years
old) that, at the last cleaning/testing, was found to be 81.7% efficient.

Now to see other guesses.

--
Andrew Erickson

"He is no fool who gives what he cannot keep to gain that which he cannot
lose." -- Jim Elliot

On Dec 19, 2:13*am, "Rob H." wrote:
The little crank laying on the right side of the display model was for
rocking/rotating the large grate bars to let the clinkers fall thru to the
bottom, where they were shoveled out and put into buckets to be carried
outdoors.

The link below has a photo of the grate as seen through the open door at the
bottom of the furnace, the handle attaches to the part at the front left,
your description of this mechanism sounds good to me.

http://img.photobucket.com/albums/v8...pic1494ngb.jpg

The handle can be seen in the bottom right of the third photo:

http://55tools.blogspot.com/

Rob

The grate is called a 'shaker'. We grew up with coal stoves when I was
a kid.

--riverman

1491 is used for sharpening two man saws. I have one with a peice of
file in it. I don't know how to use ,but it looks neat hanging on the
nail in my shop. It keeps a bunch of saw dust off the floor.

Jerry


http://community.webtv.net/awoodbutc...oodWorkingPage


http://community.webtv.net/awoodbutcher/1974Tryke

On 2008-12-18, Rob H. wrote:
This week's set has been posted:

http://55tools.blogspot.com/

Posting from rec.crafts.metalworking as always.

1489) An optical tool for comparing two images or objects, or
for viewing in 3D.

I would think that it would be used with two ariel photographs,
taken some precise distance apart to provide the separation to
make 3D distance judging possible

I don't see enough detail, but I suspect that the two pans can
be moved relative to each other, as well as rotated to align
some reference point in the two images. At that point, you can
visually judge height differences of anything showing up in both
photos -- and if you know the distance between the two photos,
can probably also measure the relative height of the features.

The pen holder allows you to mark things found onto another
piece of paper.

Hmm ... perhaps the depth perception would allow you to use it
to trace height contours onto the third piece of paper.

Probably fairly old, as I believe that all of this is done by
computer these days.

1490) A device to trap and drown mice. The lower container holds
water.

The bait is held just at the edge of the platform, or perhaps
mounted on the platform, with a counterweight on the exterior
arm.

The mouse climbs up the perforated tunnel, out onto the platform,
and at a certain point the platform tilts dumping the mouse into
the water. There is nothing for the mouse to grip, so it swims
until exhausted and then drowns.

Was this commercial, or a home-built one?

1491) Not really sure. Perhaps to plane a groove in a wooden
surface?

1492) Plungers (pistons) from different sizes of hypodermic
syringes. The OD of the cylinders is ground to a precise fit
inside the matching syringe body, which contains the markings
for the amount of fluid injected or otherwise transferred. (I
use them for putting cutting fluids at the bottom of the groove
made when parting off metal in a lathe. It is difficult to
squirt it so that it runs down into the groove where it is
needed, but a dulled needle will put it right where you need it.

1493) Looks like a hinge intended to be welded to two parts of a
project so the door can be lowered into place. (Of course, you
need two of them at least for most things.

1494) Perhaps part of a coal fired hot air furnace? The pulley at the
bottom probably keeps the coals and ashes stirred as well as
perhaps powering something else.

Now to see what others have said.

Enjoy,
DoN.

--
Email: | 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 ---

On 2008-12-18, basilisk wrote:

"Alexander Thesoso" wrote in message
...

[ ... ]

1492 A couple of hypodermic syringe plungers?

Yep, I have some old syringes that have glass plungers, In fact there are no
seals on the plungers, they fit the glass barrel snugly enough that they
don't leak.

Which is very good when you are measuring out aggressive organic
solvents, which would tend to attack both the rubber seal, and (perhaps
also) the plastic body.

Of course, they were reusable in that period, and glass is
easier to sterilize than rubber.

Enjoy,
DoN.

--
Email: | 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 ---

http://community.webtv.net/awoodbutc...oodWorkingPage


http://community.webtv.net/awoodbutcher/1974Tryke

Oops sorry about the empty post.

'shaker handle ' did alot of that untill 1970
And caried out a **** pile of asches in my life.

Jerry


http://community.webtv.net/awoodbutc...oodWorkingPage


http://community.webtv.net/awoodbutcher/1974Tryke

On Dec 19, 12:25*pm, "DoN. Nichols" wrote:


1490) * A device to trap and drown mice. *The lower container holds
* * * * water.

* * * * The bait is held just at the edge of the platform, or perhaps
* * * * mounted on the platform, with a counterweight on the exterior
* * * * arm.

* * * * The mouse climbs up the perforated tunnel, out onto the platform,
* * * * and at a certain point the platform tilts dumping the mouse into
* * * * the water. *There is nothing for the mouse to grip, so it swims
* * * * until exhausted and then drowns.

* * * * Was this commercial, or a home-built one?

I tihnk you have it about right, but its probably for something bigger
than a mouse or rat. But I think the bait is hung off of the wire, and
probably there is some sort of cover that seals the bait in. The prey
goes in the entrance at the bottom and climbs the tunnel, smelling the
bait but unable to get at it, and at the top it squeezes out on top of
the bucket, and the top tilts and it falls it. It might be a live trap
rather than a drowning trap. The prey has to be quite large; a mouse
or rat could easily get through the holes in the perforated
tunnel....maybe its for squirrels or muskrats?

--riverman

"DoN. Nichols" wrote in message
...
On 2008-12-18, basilisk wrote:

"Alexander Thesoso" wrote in message
...

[ ... ]

1492 A couple of hypodermic syringe plungers?

Yep, I have some old syringes that have glass plungers, In fact there are
no
seals on the plungers, they fit the glass barrel snugly enough that they
don't leak.

Which is very good when you are measuring out aggressive organic
solvents, which would tend to attack both the rubber seal, and (perhaps
also) the plastic body.

Of course, they were reusable in that period, and glass is
easier to sterilize than rubber.

Enjoy,
DoN.

That makes sense, the ones that I have come out of a lab that was
shut down, they did environmental work and handled a lot of acids and
solvents.

I think they were directly coupled to reaction chambers and used to
introduce measured amounts of chemicals as needed.

Some of the glass work that came from this lab is very complex, I'm not
a chemist, so I can only guess at what some of it was used for.

Anybody need a zero air generator?

basilisk

On Thu, 18 Dec 2008 22:30:23 -0800 (PST), humunculus
wrote:
snip

The prey has to be quite large; a mouse
or rat could easily get through the holes in the perforated
tunnel....maybe its for squirrels or muskrats?

--riverman

Don't forget, Rob noted it was only 9 inches tall.

I think it was a trap too, much like DoN. described.

--
Leon Fisk
Grand Rapids MI/Zone 5b
Remove no.spam for email

On Thu, 18 Dec 2008 05:50:30 -0500, "Rob H."
wrote:

This week's set has been posted:

http://55tools.blogspot.com/


Rob

1491 - Is for maintaining/sharpening saws, like a cross-cut.
I believe they called it a "jointer". Used for gauging the
height of the teeth.

--
Leon Fisk
Grand Rapids MI/Zone 5b
Remove no.spam for email

Rob H. wrote:
This week's set has been posted:

http://55tools.blogspot.com/


Rob

1490: I think it's a repeating mouse trap. There would have been a
sliding door on the entrance, tied to the wire handle.

Initially the handle and door are up. The door weighs enough to pull
the handle down, but it's latched. The mouse enters and trips the
latch. The door comes down (probably fairly slowly), which pulls down
the handle and raises the ramp.

Because the door closed slowly and he can see out, the mouse is more
curious than scared. The perforations make the tube appealing, so he
climbs, then explores the ramp. When his weight brings the ramp down,
that dumps him and resets the door, ready for the next mouse who doesn't
want to miss the fun. Soon you have enough for a pie.

On Fri, 19 Dec 2008 13:35:09 -0400, Leon Fisk
wrote:

On Thu, 18 Dec 2008 05:50:30 -0500, "Rob H."
wrote:

This week's set has been posted:

http://55tools.blogspot.com/


Rob

1491 - Is for maintaining/sharpening saws, like a cross-cut.
I believe they called it a "jointer". Used for gauging the
height of the teeth.

Here is a nice page describing how to use the "jointer":

http://www.fhwa.dot.gov/environment/...508/page05.htm

--
Leon Fisk
Grand Rapids MI/Zone 5b
Remove no.spam for email

And a nice warm winter hat.

--
WB
..........
metalworking projects
www.kwagmire.com/metal_proj.html


"E Z Peaces" wrote in message
...
Rob H. wrote:
This week's set has been posted:

http://55tools.blogspot.com/


Rob

1490: I think it's a repeating mouse trap. There would have been a
sliding door on the entrance, tied to the wire handle.

Initially the handle and door are up. The door weighs enough to pull the
handle down, but it's latched. The mouse enters and trips the latch. The
door comes down (probably fairly slowly), which pulls down the handle and
raises the ramp.

Because the door closed slowly and he can see out, the mouse is more
curious than scared. The perforations make the tube appealing, so he
climbs, then explores the ramp. When his weight brings the ramp down,
that dumps him and resets the door, ready for the next mouse who doesn't
want to miss the fun. Soon you have enough for a pie.

1491 - Is for maintaining/sharpening saws, like a cross-cut.
I believe they called it a "jointer". Used for gauging the
height of the teeth.

Here is a nice page describing how to use the "jointer":

http://www.fhwa.dot.gov/environment/...508/page05.htm


Thanks, that's a great link, I just added it to the answer page:

http://answers263k.blogspot.com/



Rob

Rob H. wrote:

1491 - Is for maintaining/sharpening saws, like a cross-cut.
I believe they called it a "jointer". Used for gauging the
height of the teeth.

Here is a nice page describing how to use the "jointer":

http://www.fhwa.dot.gov/environment/...508/page05.htm


Thanks, that's a great link, I just added it to the answer page:

http://answers263k.blogspot.com/



Rob

1490 : I just found a patent: 4 937 968. By golly, it is a drowning
trap. I had a simpler tin trap that didn't drown mice. The advantage
to leaving a mouse alive was that he could attract others. Lack of food
and water would soon kill them.

1990! That's why I didn't find it sooner. If yours was really from
1908, it looks like the American patent is a knock-off.

"E Z Peaces" wrote in message
.. .
Rob H. wrote:

1491 - Is for maintaining/sharpening saws, like a cross-cut.
I believe they called it a "jointer". Used for gauging the
height of the teeth.

Here is a nice page describing how to use the "jointer":

http://www.fhwa.dot.gov/environment/...508/page05.htm


Thanks, that's a great link, I just added it to the answer page:

http://answers263k.blogspot.com/



Rob

1490 : I just found a patent: 4 937 968. By golly, it is a drowning trap.
I had a simpler tin trap that didn't drown mice. The advantage to leaving
a mouse alive was that he could attract others. Lack of food and water
would soon kill them.

1990! That's why I didn't find it sooner. If yours was really from 1908,
it looks like the American patent is a knock-off.

1490 : I just found a patent: 4 937 968. By golly, it is a drowning trap.
I had a simpler tin trap that didn't drown mice. The advantage to leaving
a mouse alive was that he could attract others. Lack of food and water
would soon kill them.

1990! That's why I didn't find it sooner. If yours was really from 1908,
it looks like the American patent is a knock-off.

Sorry about the previous accidental post.

I'm definitely surprised to see the 1990 patent for the trap, the first link
below is to a publication from 1908, it has an ad for this device:

http://books.google.com/books?id=aG0...t#PPA78-IA2,M1


The closest patent patent that I had found for it was the rat trap seen
he

http://www.google.com/patents?id=my9...BAJ&dq=1131000

It doesn't look exactly like the one on my site, but I thought it was close
enough for it to be the correct patent for it, although the patent was filed
in 1914, at least six years after it was already on the market.

The 1990 patent does look to be a copy of earlier inventions, makes me
wonder why the patent was granted.


Rob

"Rob H." fired this volley in
:

The 1990 patent does look to be a copy of earlier inventions, makes
me
wonder why the patent was granted.

Rob,

About five years ago, I fought off a patent violation suit for a guy
who had "patented" the concept of a fireworks "fan rack". That's an
arrangement of fireworks mortars aimed at angles about vertical, so
the fireworks are fired in a "fan" formation.

Well! First of all, it takes no special knowlege or talent to arrange
common fireworks in an orientation other than vertical.

Second, we had been manufacturing "fan rack" arrangements for over ten
years prior to his applying for the patent.

Last -- the killer. We proved from literature dating back to the
1700s that the "fan rack" was not only a common device, but even
called that as early as 1818.

Then, of course, there's the fact that we knew HE knew that such a
device was already in the public domain -- so we could have pressed
criminal charges against him for knowing false prosecution of a
patent.

He demurred.

LLoyd

"Lloyd E. Sponenburgh" lloydspinsidemindspring.com fired this volley
in . 3.70:

"Rob H." fired this volley in
:

The 1990 patent does look to be a copy of earlier inventions, makes
me
wonder why the patent was granted.

Rob,

About five years ago, I fought off a patent violation suit for a guy
He demurred.

No! I meant "against a guy".... he claimed patent violation against
us.

LLoyd G

Rob H. wrote:
1490 : I just found a patent: 4 937 968. By golly, it is a drowning
trap. I had a simpler tin trap that didn't drown mice. The advantage
to leaving a mouse alive was that he could attract others. Lack of
food and water would soon kill them.

1990! That's why I didn't find it sooner. If yours was really from
1908, it looks like the American patent is a knock-off.

Sorry about the previous accidental post.

I'm definitely surprised to see the 1990 patent for the trap, the first
link below is to a publication from 1908, it has an ad for this device:

http://books.google.com/books?id=aG0...t#PPA78-IA2,M1



The closest patent patent that I had found for it was the rat trap seen
he

http://www.google.com/patents?id=my9...BAJ&dq=1131000

It doesn't look exactly like the one on my site, but I thought it was
close enough for it to be the correct patent for it, although the patent
was filed in 1914, at least six years after it was already on the market.

The 1990 patent does look to be a copy of earlier inventions, makes me
wonder why the patent was granted.


Rob


562 879 filed 1895

1 102 896 filed 1912 (slightly different)

It looks like the 1990 guy bought and patented the device shown in your
1908 catalog. I wonder if he told the attorney he had built it himself
of if US law doesn't recognize old European patents.

E Z Peaces wrote:
Rob H. wrote:
1490 : I just found a patent: 4 937 968. By golly, it is a
drowning
trap. I had a simpler tin trap that didn't drown mice. The
advantage to leaving a mouse alive was that he could attract
others. Lack of food and water would soon kill them.

1990! That's why I didn't find it sooner. If yours was really
from
1908, it looks like the American patent is a knock-off.

Sorry about the previous accidental post.

I'm definitely surprised to see the 1990 patent for the trap, the
first link below is to a publication from 1908, it has an ad for
this device:

http://books.google.com/books?id=aG0...t#PPA78-IA2,M1



The closest patent patent that I had found for it was the rat trap
seen he

http://www.google.com/patents?id=my9...BAJ&dq=1131000

It doesn't look exactly like the one on my site, but I thought it
was
close enough for it to be the correct patent for it, although the
patent was filed in 1914, at least six years after it was already
on
the market.

The 1990 patent does look to be a copy of earlier inventions, makes
me wonder why the patent was granted.


Rob


562 879 filed 1895

1 102 896 filed 1912 (slightly different)

It looks like the 1990 guy bought and patented the device shown in
your
1908 catalog. I wonder if he told the attorney he had built it
himself
of if US law doesn't recognize old European patents.

In general the USPTO does not require that anything have been built.

--
--
--John
to email, dial "usenet" and validate
(was jclarke at eye bee em dot net)

On 2008-12-19, Rob H. wrote:

1491 - Is for maintaining/sharpening saws, like a cross-cut.
I believe they called it a "jointer". Used for gauging the
height of the teeth.

Here is a nice page describing how to use the "jointer":

http://www.fhwa.dot.gov/environment/...508/page05.htm


Thanks, that's a great link, I just added it to the answer page:

http://answers263k.blogspot.com/

1494)

A salesman's sample Model A coal furnace made by the Williamson
Heater Company:

The price on it was $1250.

The price on which -- the salesman's sample, or the full-scale
furnace?

Enjoy,
DoN.

--
Email: | 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 ---

J. Clarke wrote:
E Z Peaces wrote:
Rob H. wrote:
1490 : I just found a patent: 4 937 968. By golly, it is a
drowning
trap. I had a simpler tin trap that didn't drown mice. The
advantage to leaving a mouse alive was that he could attract
others. Lack of food and water would soon kill them.

1990! That's why I didn't find it sooner. If yours was really
from
1908, it looks like the American patent is a knock-off.
Sorry about the previous accidental post.

I'm definitely surprised to see the 1990 patent for the trap, the
first link below is to a publication from 1908, it has an ad for
this device:

http://books.google.com/books?id=aG0...t#PPA78-IA2,M1



The closest patent patent that I had found for it was the rat trap
seen he

http://www.google.com/patents?id=my9...BAJ&dq=1131000

It doesn't look exactly like the one on my site, but I thought it
was
close enough for it to be the correct patent for it, although the
patent was filed in 1914, at least six years after it was already
on
the market.

The 1990 patent does look to be a copy of earlier inventions, makes
me wonder why the patent was granted.


Rob

562 879 filed 1895

1 102 896 filed 1912 (slightly different)

It looks like the 1990 guy bought and patented the device shown in
your
1908 catalog. I wonder if he told the attorney he had built it
himself
of if US law doesn't recognize old European patents.

In general the USPTO does not require that anything have been built.

I was thinking about the patent attorney. I imagine an inventor of a
mouse trap would show a working model to the lawyer, who would arrange
for drawings and write up a description.

http://www.hugheswho.com/writing.asp?id=28
This page says

'One in particular, made by the German company Luchs, named the “Capito
Original” appears far too elaborate to do the job with any real
efficiency. The advertising for this device featured a weeping cat –
presumably signifying its loss of status as a mouse-catcher.'

http://www.hugheswho.com/files/images/capito1.jpg

The article says selling mousetraps depended more on advertising than
original invention. I think the Capito got a name through advertising,
and American inventors copied it.

Here are two photos and a description of a museum piece.
http://www.powerhousemuseum.com/coll...6071&img=34837
They went into production in 1880. The snap trap wasn't invented until
1894.

"DoN. Nichols" wrote in message
...
On 2008-12-19, Rob H. wrote:

1491 - Is for maintaining/sharpening saws, like a cross-cut.
I believe they called it a "jointer". Used for gauging the
height of the teeth.

Here is a nice page describing how to use the "jointer":

http://www.fhwa.dot.gov/environment/...508/page05.htm


Thanks, that's a great link, I just added it to the answer page:

http://answers263k.blogspot.com/

1494)

A salesman's sample Model A coal furnace made by the Williamson
Heater Company:

The price on it was $1250.

The price on which -- the salesman's sample, or the full-scale
furnace?

That's the price for the salesman's sample, I couldn't find a price for the
full-scale one, I did see an ad for it but the price wasn't listed.


Rob

Rob, do you happen to remember how old the ad for the furnace was?

The ad was from 1920, I don't know if it's the exact same model or not, but
it shows the metal shroud around it like someone mentioned. I was thinking
about posting this on the answer page but I'll just post it here instead:



http://cgi.ebay.com/G606-1920-Lg-WIL...3286.m20.l1116



Rob

Thanks, Rob. The catalog page "pipeless" model is different from the
salesman's model on your page. The catalog ad furnace doesn't have the
Radiator Cleanout door near the top, and the front casting is set back into
the base circle.

The furnace I'm familiar with was identical to the salesman's model on your
page. The front casting protrudes from/is outside of, the base circle. It
had the Radiator Cleanout door and all the other features of the salesman's
model on your page.

Thanks again for the weekly thought provoking pages.

--
WB
..........
metalworking projects
www.kwagmire.com/metal_proj.html


"Rob H." wrote in message
...

Rob, do you happen to remember how old the ad for the furnace was?

The ad was from 1920, I don't know if it's the exact same model or not,
but it shows the metal shroud around it like someone mentioned. I was
thinking about posting this on the answer page but I'll just post it here
instead:



http://cgi.ebay.com/G606-1920-Lg-WIL...3286.m20.l1116



Rob