Post by Dave GarlandPost by h***@bbs.cpcn.comIt also sounds like a heck of a lot of fun.
It was the Lego of its day.
Probably better than Lego.
They had a "Kenner Bridge, Girder, and Panel" building set when I was
a kid. It had plastic beams one could set up as a building skeleton,
then very thin (brittle, easily broken) plastic panels to serve as
windows. One could create buildings or bridges. If memory serves,
the bridge set came with string and instructions on making a
suspension bridge. I think the bridge set was more advanced than the
building set.
There was also a Lego-like set called "American Brick" (IIRC), with
red plastic bricks that fit together to build houses. There were
little white plastic frames for windows and doors, and long pieces for
a foundation. I think a green cardboard served as the roof.
In Roebling, NJ, the former site of the wire works that made the
cables for many suspension bridges, they created a small museum with
some artificats and photos*. http://roeblingmuseum.org/
I wish a museum like that was something like that was available when I
was a kid. Of course, the museum is nice and clean, air conditioned
and comfortable, which was not exactly what the actual steel mills
were like inside while in production. (I heard a local steel mill
took visitors on a bus tour through its various buildings, which
would've been quite interesting.)
* obl IT note: The Roebling museum has some sample old paystubs and
records on display; apparently they used an bookkepping machine (ie
NCR or Burroughs); I don't think they had IBM equipment. (But at their
peak they had 6,000 employees, so maybe they did have IBM gear for
that kind of volume). However, they did have (and on display) an
"International" (IBM) time clock, and the time card racks are stamped
with the IBM logo.
A 1939 IBM film describing their factory shows considerable metal
working, from taking raw steel rods and fashioning them in various
ways into components. EAM machines used a large quantity of relays,
and I wonder if IBM manufactured their own or purchased them. Their
history does say they did considerable R&D to improve relays to make
them smaller. I presume modern mainframes to this day still have some
relays to power up the CPU and peripherals.
IBM developed several computers for real-time industrial process
control, such as the 1710/1720 (based on the 1620), the 1800 (based on
the 1130), and the System/7. In 1969 other firms with mini-computer
strengths such as CDC, DG, DEC, and HP, got into the business. Steel
making requires monitoring so the steel has the proper amount of
carbon and other ingredients for its grade, and the absence of certain
contaminents. Certain high end steels require very precise
proportion of ingredients and temperature control throughout the
process. Monitoring of old style open hearths was done by skilled
workers who judged the color of the bath as well as samples sent to a
lab. I don't know how electric furnace or basic oxygen steel is
monitored, nor if IBM process controllers were ever used in steel
making.
The steel used for building wire and cable, such as that made by
Roebling, required strict specifications in order to have the
uniformity, strength, and durability in critical applications. (Steel
wire intended for things like paper clips and clothes hangers needn't
be as stringent.)