The Minneapolis journal. [volume] (Minneapolis, Minn.) 1888-1939, 1902-11-08

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of rivet the exact number needed to
required strength and also whether they to be
shops left for the worzmen to
the field After the drawing is carefully checked
up, it ready to shops the guidance
who to do their share in fitting the metal
in stock this particular design So exact must they be
their work will not devate than sixty
an inch from the designs
the piles Of iron soft iron they call
average piles iron and noth-
ing They might well be so much kindng wood
for all they unknowing the
shop learnedly Ibars. Zbars, channel bars
angle irons. rods. etc.
This iron manufactured Pittsburg celebrated
rolling there, shops here nothing is
actual Of bridge building beyond
the drilling rtveting the conversion
of the iron rods into rives Of all dimensions the saving
and shaving solid iron fit certain specifications.
There several machines in the shop used in this
that almost They going
goes about some other work. paying
attention beyond glance then. until the
time allotted for the work is almost One Of these
chimes is little bigger than the butcher
in saving bones It is also much the
special work is the saving large rods
does its with such regularity,
might almost say with cheerfulness
makes feel like patting it. it dumb
had done clever
Still another machine by the paner.
This is grooves required depths
couple OF feet long, whether long,
automatically end is reached and
begins all again. without the attendance having
to touch lever button. At the
work Of this machine has be watched closely
than that Of because grooves must be cut
"just So"
The section where they rivet very interesting
place. likewise hot and noisy From the stock
of soft iron which has already been lying
in the small low piles they bring in
than likely they rusty Of weather.
nothing observer about as good
he tins Of these nc fo1
fiery, roasting snaring they become
the right hotnessheat does not fully glow
ing ends into the bolt machine, which chop,
cnop ana oreao1ul CATER puts head on cuts bolt
off, four inches long drops it into pan
slant drip, drip of water drawing
breath has made another head chopped another
to the end of the redhot section This
kept bolts being made
and kept in stock.
Over in another part Of the building a
chine preparing metal which are to be
used The rivet holes have been carefully
marked by drilling have to do is to
put this mark under the machine touch
punch that takes out piece required
cutter
Now, when it time rivets which the
plans indicate to be driven shop bolts are
heated red hot again. and when just rgtabou
lead-one is thrown at the feet of picks it up
with pair Of pincers of the two
pieces together one end Of the holt
sticking inch above them. Then another man
swings huge, queer-ooking machine something like
clumsy magnet hung sideways until the rive is between +
two ends. Then he touches somewhere the ends
Of the magnet together, deafening blast
Of compressed air which the
rvet with its projecting end fattened head thus
fastening the two pieces solidily
If they had been one piece.
In still another spot Is trip hammer This good1y
sized piece Of solid metal which
the iron fiat Somewhere in the bridge
there be needed pieces Of iron which
huge pins that have been put under the giants
locomotive with the exception that from
the fatenng they look like
heads instead OF The trip hammer is
fattening process.
In many bridges there is demand ornamental
iron work. some fancy lamp-poss some scroll
Of twisted polls
bridge building company all this work is done in
shop There not at the
sight. Merely number of little square
sand, with pretty little design outlined them, a
number tanping the sand with
and there mixing
ing nothing about
work. that nofsY=in fact rennarzahlu