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--Captions by VITAC--
www.vitac.com
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00:00:05,103 --> 00:00:08,103
CAPTIONS PAID FOR BY
DISCOVERY COMMUNICATIONS
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Narrator:
THROUGHOUT HISTORY,
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SEWING NEEDLES HAVE KEPT THINGS
FROM FALLING APART AT THE SEAMS.
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00:00:56,586 --> 00:00:59,586
FROM PRIMITIVE TIMES,
WHEN NEEDLES WERE MADE OF BONE,
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00:00:59,586 --> 00:01:02,000
TO TODAY'S THIN STEEL VERSIONS,
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00:01:02,000 --> 00:01:05,103
SEWING NEEDLES HAVE PLAYED
AN IMPORTANT ROLE IN OUR LIVES.
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00:01:05,103 --> 00:01:06,896
FOR MANY YEARS,
THIS SIMPLE TOOL
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00:01:06,896 --> 00:01:09,965
MADE IT POSSIBLE
TO CLOTHE AN ENTIRE FAMILY.
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00:01:13,448 --> 00:01:16,241
TODAY, WHEN MOST CLOTHING
IS FACTORY-MADE,
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00:01:16,241 --> 00:01:18,862
A SEWING KIT REMAINS
A HOUSEHOLD ESSENTIAL.
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00:01:18,862 --> 00:01:20,689
WHEN THINGS START TO UNRAVEL,
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00:01:20,689 --> 00:01:23,586
A NEEDLE AND THREAD
OFFER A QUICK FIX.
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00:01:23,586 --> 00:01:27,689
SEWING NEEDLES
BEGIN WITH THIN STEEL WIRE.
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00:01:27,689 --> 00:01:31,000
MACHINERY UNCOILS
TWO SPOOLS SIMULTANEOUSLY
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00:01:31,000 --> 00:01:33,655
AND PULLS THE WIRES
ACROSS GUIDE WHEELS
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00:01:33,655 --> 00:01:35,724
AND INTO NARROW PASSAGEWAYS
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00:01:35,724 --> 00:01:39,689
TO REMOVE KINKS
AND STRAIGHTEN THE WIRES.
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00:01:42,413 --> 00:01:45,413
AND THEN CUTTERS SLICE THEM
TO THE LENGTH OF TWO NEEDLES.
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00:01:47,103 --> 00:01:49,448
THE WIRES EXIT
INTO SHAKING CHUTES
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00:01:49,448 --> 00:01:52,241
AND FALL INTO BINS
IN NEAT PILES.
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EACH ONE WILL BE USED
TO MAKE TWO NEEDLES.
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00:02:02,551 --> 00:02:05,896
THIS GRINDING WHEEL TURNS,
AND, AT THE SAME TIME,
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00:02:05,896 --> 00:02:08,896
AN OVERHEAD WHEEL REVOLVES
IN A DIFFERENT DIRECTION,
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00:02:08,896 --> 00:02:11,068
TO BEAR DOWN
ON THE ENDS OF THE WIRES
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00:02:11,068 --> 00:02:13,241
AND GRIND THEM TO A POINT.
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00:02:13,241 --> 00:02:15,172
SPARKS FLY FROM THE FRICTION.
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00:02:15,172 --> 00:02:19,068
IT TAKES UP TO SIX GRINDINGS
TO MAKE THE TIPS SHARP ENOUGH.
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00:02:22,586 --> 00:02:24,137
THEN THE WIRES
HEAD DOWN THE LINE
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00:02:24,137 --> 00:02:26,827
TO A SERIES
OF STAMPING MACHINES.
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00:02:28,275 --> 00:02:31,241
THE FIRST ONE FLATTENS
EACH WIRE AT MIDPOINT
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TO FORM TWO NEEDLE HEADS.
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THE NEXT STAMPING DEVICE
PUNCH-CUTS TWO EYES,
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00:02:38,379 --> 00:02:39,724
ONE IN EACH HEAD.
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00:02:42,172 --> 00:02:45,310
THE THIRD MACHINE
CUTS THE WIRE IN TWO
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00:02:45,310 --> 00:02:49,206
AND TRIMS EXCESS MATERIAL
FROM AROUND THE NEEDLE HEADS.
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THE NEEDLES FALL INTO A BIN.
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IN THREE QUICK STEPS,
THIS STEEL WIRE
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HAS BEEN TRANSFORMED
INTO TWO SEWING NEEDLES.
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00:03:06,034 --> 00:03:07,758
NEXT THEY TOUGHEN THE METAL
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00:03:07,758 --> 00:03:10,034
BY FIRST BAKING THE NEEDLES
IN AN OVEN
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00:03:10,034 --> 00:03:12,793
AND THEN QUICKLY BRINGING DOWN
THEIR TEMPERATURE.
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00:03:12,793 --> 00:03:15,206
THE TEMPERATURE SHOCK
HARDENS THE NEEDLES.
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00:03:16,931 --> 00:03:18,310
THEY COVER THE NEEDLES
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WITH GLYCERIN OIL
AND A POLISHING POWDER.
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THEY WRAP THEM
IN A BUNDLE OF PLASTIC AND CLOTH
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00:03:25,517 --> 00:03:27,241
AND STITCH IT UP.
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THEY ROLL A LAYER OF LEATHER
AROUND THE BUNDLE OF NEEDLES.
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00:03:32,068 --> 00:03:35,482
THE PACKAGE THEN GOES
INTO A SPECIAL ROLLING MILL.
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IT SPINS IN THIS MACHINE
FOR TWO DAYS.
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INSIDE, THE NEEDLES AGITATE
WITH THE POLISHING INGREDIENTS,
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AND THEY EMERGE
LOOKING MUCH SMOOTHER.
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THEN IT'S INTO A WASHING MACHINE
FOR A SCRUB WITH SOAP AND WATER.
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THIS REMOVES
THE POLISHING RESIDUE
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TO PREPARE THEM
FOR ELECTROPLATING.
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ELECTROPLATING GIVES THE NEEDLES
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AN OUTER SKIN
OF CORROSION-RESISTANT NICKEL.
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00:04:03,551 --> 00:04:06,758
THE NEEDLES NOW MOVE FORWARD
INTO A SORTING SYSTEM
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00:04:06,758 --> 00:04:10,241
THAT ENSURES THE NEEDLES
ARE POINTING IN ONE DIRECTION.
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00:04:12,310 --> 00:04:15,413
AN INSPECTOR
EXAMINES THE NEEDLES FOR FLAWS
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00:04:15,413 --> 00:04:18,068
AND SORTS OUT
THE DEFECTIVE ONES.
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00:04:20,241 --> 00:04:23,103
THEY DIP THE EYES
OF SOME NEEDLES IN A GOLD BATH
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00:04:23,103 --> 00:04:25,310
AND APPLY AN ELECTRICAL CHARGE
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00:04:25,310 --> 00:04:29,172
SO THE GOLD GRAVITATES
TO THE NICKEL AND ADHERES.
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00:04:29,172 --> 00:04:31,448
A LITTLE GOLD AROUND THE EYES
MAKES THEM STAND OUT,
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00:04:31,448 --> 00:04:34,448
SO THESE NEEDLES
SHOULD BE EASIER TO THREAD.
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MEANWHILE, THE PRODUCTION
OF PINS IS WELL UNDERWAY.
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GAS JETS MELT GLASS
INTO TINY DOLLOPS,
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00:04:43,517 --> 00:04:46,827
WHICH STICK ON TO THE TOPS
OF THE PINS AS THEY ROLL BY.
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00:04:46,827 --> 00:04:50,482
THE GLASS HARDENS IN SECONDS,
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00:04:50,482 --> 00:04:52,655
GOING FROM TRANSPARENT
TO OPAQUE.
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THESE GLASS-HEADED PINS
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ARE NOW READY FOR HEMMING
AND OTHER SEWING JOBS.
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THE PINS FALL BETWEEN
TWO REVOLVING CYLINDERS.
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THE SPACE BETWEEN THE CYLINDERS
GRADUALLY NARROWS.
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00:05:07,344 --> 00:05:09,275
THIS SORTS THE PINS BY SIZE
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AS THEY DROP
INTO VARIOUS BINS BELOW.
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00:05:14,689 --> 00:05:18,758
NOW ALL THAT'S LEFT
IS THE PACKAGING.
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00:05:18,758 --> 00:05:21,482
THE PACKAGING LINE
IS ENTIRELY AUTOMATED.
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00:05:21,482 --> 00:05:25,448
ROBOTS DROP SEWING NEEDLES INTO
GROOVES IN PLASTIC PACKAGES,
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00:05:25,448 --> 00:05:27,965
AND THE PACKAGES MOVE FORWARD.
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00:05:27,965 --> 00:05:31,172
THE TIMING IS FLAWLESS.
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00:05:33,724 --> 00:05:36,137
FINALLY, A TRANSPARENT COVER
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00:05:36,137 --> 00:05:39,758
SHOWCASES THIS PRODUCT'S
MANY SELLING POINTS.
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Narrator:
EXTERIOR MOLDINGS CAN TRANSFORM
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AN ORDINARY STRUCTURE
INTO SOMETHING GRAND.
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00:05:55,517 --> 00:05:58,241
THE ANCIENT GREEKS WERE
THE FIRST TO DEMONSTRATE THIS,
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WITH ELABORATE CARVED MOLDINGS
ON TEMPLES.
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00:06:00,931 --> 00:06:04,448
TODAY THERE'S NO NEED TO SPEND
LONG HOURS CARVING MOLDINGS.
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00:06:04,448 --> 00:06:07,206
FABRICATED SYNTHETIC VERSIONS
ARE NOW AVAILABLE
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00:06:07,206 --> 00:06:09,827
TO GIVE A STRUCTURE
INSTANT CURB APPEAL.
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00:06:12,896 --> 00:06:15,310
ARCHITECTURAL FOAM MOLDINGS
TRICK THE EYE.
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THEY LOOK LIKE STONE OR WOOD,
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00:06:17,517 --> 00:06:19,758
AND IT'S ALL
A CAREFULLY CRAFTED ILLUSION
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00:06:19,758 --> 00:06:23,000
TO IMPRESS THE NEIGHBORS
OR PASSERSBY.
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00:06:25,551 --> 00:06:27,931
THEY START
WITH A BIG BLOCK OF FOAM.
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IT'S EXPANDED POLYSTYRENE,
OR E.P.S.
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THEY ACTIVATE
A HOT-WIRE FOAM CUTTER.
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00:06:33,724 --> 00:06:35,965
CONTROLLED BY COMPUTER SOFTWARE,
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00:06:35,965 --> 00:06:38,724
IT MELTS ITS WAY
THROUGH THE THICK FOAM BLOCK
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00:06:38,724 --> 00:06:41,965
TO MAKE VERY PRECISE
AND INTRICATE CUTS.
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00:06:41,965 --> 00:06:44,965
THIS COMPUTERIZED HOT WIRE
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00:06:44,965 --> 00:06:47,379
IS CUTTING OUT PIECES
OF ARCHITECTURAL TRIM
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00:06:47,379 --> 00:06:50,137
FOR WINDOWS OR DOORS.
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00:06:50,137 --> 00:06:54,068
IT CARVES IN AN ECONOMICAL WAY
TO MINIMIZE WASTE.
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00:06:54,068 --> 00:06:56,620
ITS WORK DONE,
THE HOT WIRE RISES,
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00:06:56,620 --> 00:07:01,310
LEAVING A TRAIL OF SMOKE
FROM THE BURNING PROCESS.
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00:07:01,310 --> 00:07:04,241
A WORKER THEN PUSHES OUT
THE MOLDINGS.
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00:07:06,517 --> 00:07:10,655
EACH PIECE OF ARCHITECTURAL TRIM
IS 8 FEET IN LENGTH.
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00:07:15,931 --> 00:07:19,655
THE HOT WIRE NOW CARVES
AN ELABORATE FLUTED COLUMN,
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00:07:19,655 --> 00:07:21,689
ONE HALF AT A TIME.
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00:07:21,689 --> 00:07:24,896
THIS IS A ROMAN-STYLE COLUMN.
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00:07:24,896 --> 00:07:26,758
ONCE CARVED IN STONE,
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00:07:26,758 --> 00:07:30,000
IT'S NOW BEING REPLICATED
IN FOAM.
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00:07:30,000 --> 00:07:33,103
AND THIS OLD-WORLD LOOK
CAN NOW BE ACHIEVED
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WITH MINIMAL PHYSICAL EFFORT.
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TO MAKE AN ARCH,
THEY USE A HOT-WIRE SHAPE
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00:07:41,931 --> 00:07:44,517
INSTEAD OF A COMPUTERIZED
STRAIGHT WIRE.
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00:07:44,517 --> 00:07:48,310
THEY POSITION IT IN FRONT
OF A CURVED PIECE OF FOAM.
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00:07:48,310 --> 00:07:51,758
RUBBER DRIVE WHEELS PUSH
THE FOAM THROUGH THE HOT WIRE.
121
00:07:51,758 --> 00:07:55,586
THESE WHEELS HAVE BEEN PRESET
TO ACCURATELY STEER THE CUT.
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00:07:55,586 --> 00:07:58,000
THE RESULT IS AN ARCH
THAT WILL BE A PERFECT MATCH
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00:07:58,000 --> 00:08:00,758
FOR THE LINEAR TRIM
PRODUCED EARLIER,
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00:08:00,758 --> 00:08:03,448
SO THEY'LL FIT TOGETHER
SEAMLESSLY.
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00:08:06,517 --> 00:08:10,103
THEY USE A CARVED FOAM WEDGE
TO EMULATE THE KEYSTONE,
126
00:08:10,103 --> 00:08:12,551
A PIECE USED IN STONE ARCHES
127
00:08:12,551 --> 00:08:15,517
TO LOCK PARTS TOGETHER
AT MIDPOINT.
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00:08:16,758 --> 00:08:21,379
A WORKER NOW WRAPS THE CUT FOAM
MOLDINGS IN FIBERGLASS MESH.
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00:08:21,379 --> 00:08:25,965
PRE-INFUSED WITH GLUE, THE MESH
INSTANTLY ADHERES TO THE FOAM.
130
00:08:25,965 --> 00:08:29,103
THIS MESH ADDS STRENGTH
TO THE MOLDING,
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00:08:29,103 --> 00:08:31,620
AND IT ALSO MAKES IT
CRACK-RESISTANT.
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00:08:37,586 --> 00:08:42,862
NEXT, CEMENT FLOWS INTO A HOPPER
AND ONTO THE MOLDINGS BELOW.
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00:08:45,620 --> 00:08:47,068
THE MOLDINGS ARE DRIVEN
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00:08:47,068 --> 00:08:49,379
THROUGH A TEMPLATE
WITH THE SAME CONTOURS,
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00:08:49,379 --> 00:08:53,206
TO APPLY THE CEMENT EVENLY
ON THE SURFACE AND THE SIDES.
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00:08:53,206 --> 00:08:55,310
THIS IS NO ORDINARY CEMENT.
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00:08:55,310 --> 00:08:56,931
IT'S A PRE-ENGINEERED MIX,
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00:08:56,931 --> 00:08:59,137
FORTIFIED WITH A SPECIAL RESIN
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00:08:59,137 --> 00:09:03,172
TO CREATE A DURABLE COATING
FOR THE MESH-COVERED MOLDINGS.
140
00:09:06,448 --> 00:09:09,310
A WORKER THEN TRANSFERS
THE MOLDINGS TO A RACK
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00:09:09,310 --> 00:09:11,827
TO CURE FOR A MINIMUM
OF 24 HOURS
142
00:09:11,827 --> 00:09:14,241
BEFORE GETTING
ANOTHER COATING OF CEMENT,
143
00:09:14,241 --> 00:09:18,172
THIS ONE
WITH A MUCH FINER TEXTURE.
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00:09:18,172 --> 00:09:20,724
IT'S MUCH TRICKIER
TO APPLY CEMENT
145
00:09:20,724 --> 00:09:22,551
TO AN ARCH-SHAPED PIECE
OF MOLDING,
146
00:09:22,551 --> 00:09:25,137
SO THEY TAKE
A MORE HANDS-ON APPROACH.
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00:09:25,137 --> 00:09:29,206
THE EMPLOYEE SCOOPS THE CEMENT
ONTO THE MESHED-FOAM SEMICIRCLE.
148
00:09:30,655 --> 00:09:34,379
HE THEN MOVES THE CUSTOM-MADE
TEMPLATE OVER THE MOLDING,
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00:09:34,379 --> 00:09:36,793
INSTEAD OF PUSHING
THE MOLDING THROUGH IT.
150
00:09:36,793 --> 00:09:39,344
IT'S A BETTER WAY
TO EVENLY DISTRIBUTE THE CEMENT
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00:09:39,344 --> 00:09:41,413
ON A CURVED SURFACE.
152
00:09:45,758 --> 00:09:49,344
AFTER CARVING, MESHING,
AND TWO LAYERS OF CEMENT,
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00:09:49,344 --> 00:09:51,586
THIS ARCH IS NOW READY.
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00:09:54,448 --> 00:09:58,275
FOR SMALLER ORDERS, THEY ALSO
APPLY THE CEMENT MANUALLY.
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00:09:58,275 --> 00:10:00,344
THERE'S NO NEED
FOR A MACHINE SETUP
156
00:10:00,344 --> 00:10:03,655
WHEN THERE ARE ONLY
ONE OR TWO COLUMNS TO BE COATED.
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00:10:03,655 --> 00:10:05,965
GUIDED BY A TRACK
ON THE SIDE OF A TABLE,
158
00:10:05,965 --> 00:10:07,482
THE WORKER
SLOWLY DRAWS THE TEMPLATE
159
00:10:07,482 --> 00:10:09,655
DOWN THE ROMAN-STYLE COLUMN
160
00:10:09,655 --> 00:10:14,172
TO APPLY THE CEMENT TO THE FOAM
AND MAKE IT LOOK LIKE STONE.
161
00:10:17,862 --> 00:10:20,689
THE SECOND LAYER
GETS EXTRA ATTENTION.
162
00:10:20,689 --> 00:10:23,758
HE RUBS THE CEMENT INTO THE
GROOVES FOR COMPLETE COVERAGE
163
00:10:23,758 --> 00:10:26,620
AND THEN PULLS THE TEMPLATE
ACROSS ONCE AGAIN,
164
00:10:26,620 --> 00:10:28,827
THIS TIME
LIGHTLY SKIMMING THE SURFACE
165
00:10:28,827 --> 00:10:31,551
TO PRODUCE A FINER TEXTURE.
166
00:10:33,241 --> 00:10:35,034
AND NOW THESE MOLDINGS
167
00:10:35,034 --> 00:10:38,689
ARE READY TO ADD DETAIL
AND DEFINITION TO A STRUCTURE.
168
00:10:50,103 --> 00:10:52,241
Narrator: A LOCOMOTIVE
IS THE POWERFUL VEHICLE
169
00:10:52,241 --> 00:10:53,793
AT THE FRONT OF A TRAIN
170
00:10:53,793 --> 00:10:55,862
THAT PULLS THE CARS
ALONG THE TRACK.
171
00:10:55,862 --> 00:10:59,724
SOMETIMES THERE'S A SECOND ONE
PUSHING FROM BEHIND, AS WELL.
172
00:10:59,724 --> 00:11:02,241
PASSENGER-TRAIN LOCOMOTIVES
ARE SMALLER
173
00:11:02,241 --> 00:11:04,000
AND DESIGNED PRIMARILY
FOR SPEED.
174
00:11:04,000 --> 00:11:06,034
FREIGHT LOCOMOTIVES
PULLING RAILCARS
175
00:11:06,034 --> 00:11:09,000
ARE SIGNIFICANTLY LARGER
AND STRONGER.
176
00:11:11,000 --> 00:11:13,517
HEAVY HAULS
ARE MAMMOTH FREIGHT LOCOMOTIVES
177
00:11:13,517 --> 00:11:15,413
DESIGNED FOR NORTH AMERICA,
178
00:11:15,413 --> 00:11:17,413
WHERE TRACKS ARE WIDER
AND STRONGER
179
00:11:17,413 --> 00:11:20,758
THAN IN MOST OTHER PARTS
OF THE WORLD.
180
00:11:20,758 --> 00:11:24,137
THOSE SMALLER YELLOW LOCOMOTIVES
ARE FOR THE EUROPEAN MARKET.
181
00:11:24,137 --> 00:11:29,034
THE LARGER GRAY ONES
TO THE RIGHT ARE HEAVY HAULS.
182
00:11:29,034 --> 00:11:32,206
WORKERS WELD TOGETHER
MASSIVE PIECES OF STEEL
183
00:11:32,206 --> 00:11:35,379
TO CONSTRUCT THE LOCOMOTIVE'S
STRUCTURAL UNDERFRAME.
184
00:11:35,379 --> 00:11:38,586
AT EACH END,
THEY INSERT A GIANT STEEL PIN
185
00:11:38,586 --> 00:11:40,793
THROUGH A HOLE
IN THE UNDERFRAME'S FLOOR.
186
00:11:40,793 --> 00:11:43,103
FOR NOW,
THEY WELD THE PINS PARTIALLY
187
00:11:43,103 --> 00:11:45,068
TO TACK THEM IN POSITION.
188
00:11:46,862 --> 00:11:50,448
NEXT, LIFTING AND MANEUVERING IT
WITH GIANT TRUNNIONS,
189
00:11:50,448 --> 00:11:52,034
THEY FLIP THE UNDERFRAME
190
00:11:52,034 --> 00:11:55,000
SO THAT THE PROTRUDING SIDE
OF THE PINS IS FACING UPWARD.
191
00:11:55,000 --> 00:11:58,241
THEN A CRANE SYSTEM
TRANSFERS THE UNDERFRAME
192
00:11:58,241 --> 00:12:00,965
TO ANOTHER AREA
TO COMPLETE THE WELDING.
193
00:12:00,965 --> 00:12:03,413
THE PINS REQUIRE
EXCEPTIONAL BONDING
194
00:12:03,413 --> 00:12:06,862
BECAUSE THEY CONNECT THE
UNDERFRAME TO THE WHEEL FRAMES.
195
00:12:07,965 --> 00:12:10,655
AN AUTOMATED WELDER
CIRCLES EACH PIN REPEATEDLY,
196
00:12:10,655 --> 00:12:13,965
PROGRESSIVELY BUILDING UP
AN INCH-THICK WELD.
197
00:12:13,965 --> 00:12:17,517
THEY MAKE THE SAME SIZE WELD
ON THE OTHER SIDE OF THE PIN.
198
00:12:19,310 --> 00:12:22,206
ALL THE WELDED STEEL PARTS
ARE EXCEPTIONALLY THICK,
199
00:12:22,206 --> 00:12:27,896
RENDERING THE UNDERFRAME
STRONG ENOUGH TO PULL 500 TONS.
200
00:12:27,896 --> 00:12:31,068
NEXT, THEY INSTALL
THE AIR RESERVOIR AND PIPES
201
00:12:31,068 --> 00:12:32,931
FOR THE PNEUMATIC BRAKE SYSTEM
202
00:12:32,931 --> 00:12:36,275
AND A 5,300-GALLON FUEL TANK.
203
00:12:36,275 --> 00:12:37,896
THEN THEY ASSEMBLE
204
00:12:37,896 --> 00:12:40,448
THE LOCOMOTIVE'S
SIX TRACTION MOTORS.
205
00:12:40,448 --> 00:12:43,241
EACH ONE GENERATES
750 HORSEPOWER --
206
00:12:43,241 --> 00:12:45,758
3 TIMES MORE
THAN A TYPICAL CAR --
207
00:12:45,758 --> 00:12:49,482
GIVING THE LOCOMOTIVE
4,500-HORSEPOWER STRENGTH.
208
00:12:49,482 --> 00:12:51,551
TO BUILD EACH TRACTION MOTOR,
209
00:12:51,551 --> 00:12:55,724
THEY BOLT COILS OF WOUND COPPER
INTO A CYLINDER CALLED A STATOR.
210
00:12:55,724 --> 00:12:57,620
THEN THEY LOWER
ANOTHER CYLINDER,
211
00:12:57,620 --> 00:12:59,793
CALLED AN ARMATURE,
INTO THE STATOR.
212
00:12:59,793 --> 00:13:01,724
POWERED BY AN ALTERNATOR,
213
00:13:01,724 --> 00:13:03,482
THE COILS PRODUCE
AN ELECTRIC FIELD
214
00:13:03,482 --> 00:13:05,275
THAT ROTATES THE ARMATURE,
215
00:13:05,275 --> 00:13:08,862
TURNING COMPONENTS
WHICH PROPEL THE LOCOMOTIVE.
216
00:13:08,862 --> 00:13:11,172
WORKERS LUBRICATE THE WHEELS
217
00:13:11,172 --> 00:13:13,172
THEN, USING A STRONG PRESS,
218
00:13:13,172 --> 00:13:16,068
FIT TWO ON EACH
OF THE VEHICLE'S SIX AXLES.
219
00:13:16,068 --> 00:13:19,793
EACH WHEEL IS A YARD IN DIAMETER
AND WEIGHS ABOUT A HALF A TON.
220
00:13:19,793 --> 00:13:23,206
THE AXLE HAS A LARGE GEAR
THAT TURNS BOTH WHEELS.
221
00:13:23,206 --> 00:13:26,620
THIS FINISHED UNIT IS CALLED
A WHEEL-AXLE-GEAR ASSEMBLY --
222
00:13:26,620 --> 00:13:28,068
"W.A.G." FOR SHORT.
223
00:13:28,068 --> 00:13:29,793
WORKERS INSTALL A W.A.G.
224
00:13:29,793 --> 00:13:32,068
ONTO EACH OF THE SIX
TRACTION MOTORS.
225
00:13:32,068 --> 00:13:35,034
THE W.A.G.'s GEAR ENGAGES
WITH THE TRACTION MOTOR'S GEAR,
226
00:13:35,034 --> 00:13:37,655
SO WHEN THE MOTOR RUNS,
THAT GEAR TURNS,
227
00:13:37,655 --> 00:13:39,758
WHICH THEN ROTATES
THE W.A.G. GEAR,
228
00:13:39,758 --> 00:13:41,379
WHICH TURNS THE WHEELS.
229
00:13:41,379 --> 00:13:44,379
SO NOW THERE ARE SIX W.A.G.
AND TRACTION MOTOR COMBINATIONS.
230
00:13:44,379 --> 00:13:47,172
WORKERS DIVIDE THEM
INTO TWO GROUPS OF THREE
231
00:13:47,172 --> 00:13:50,413
THEN BOLT EACH TRIO
INTO A FRAME CALLED A BOGIE.
232
00:13:50,413 --> 00:13:53,137
SO, NOW THE LOCOMOTIVE
HAS TWO BOGIES,
233
00:13:53,137 --> 00:13:56,517
EACH WITH AN AIR-DRIVEN
BRAKE SYSTEM BUILT INTO IT.
234
00:13:56,517 --> 00:13:59,655
UNTIL THIS POINT, THE BOGIES
HAVE BEEN UPSIDE DOWN.
235
00:13:59,655 --> 00:14:02,241
NOW A CRANE FLIPS THEM
RIGHT SIDE UP
236
00:14:02,241 --> 00:14:05,758
TO PREPARE FOR THE FINAL
ASSEMBLY OF THE LOCOMOTIVE.
237
00:14:10,965 --> 00:14:13,896
THEY POSITION THE TWO BOGIES
NEXT TO THE UNDERFRAME
238
00:14:13,896 --> 00:14:15,413
AT OPPOSITE ENDS.
239
00:14:17,068 --> 00:14:19,103
CRANES THEN LIFT THE UNDERFRAME
240
00:14:19,103 --> 00:14:22,448
AND SLOWLY LOWER IT
ONTO THE BOGIES.
241
00:14:24,310 --> 00:14:28,206
THE PIVOT PINS PROTRUDING
FROM BENEATH THE UPPER FRAME
242
00:14:28,206 --> 00:14:31,172
DROP INTO RECEIVING HOLES
IN THE BOGIES.
243
00:14:32,689 --> 00:14:35,103
NEXT, THEY LOWER
A GIANT ALTERNATOR
244
00:14:35,103 --> 00:14:37,206
ONTO THE DECK OF THE UNDERFRAME.
245
00:14:37,206 --> 00:14:39,275
IT POWERS THE TRACTION MOTORS
246
00:14:39,275 --> 00:14:43,310
AS WELL AS THE CONTROL SYSTEMS
AND OTHER AUXILIARY EQUIPMENT.
247
00:14:43,310 --> 00:14:46,827
THIS 16-CYLINDER,
4,500-HORSEPOWER ENGINE
248
00:14:46,827 --> 00:14:49,413
DRIVES THE ALTERNATOR.
249
00:14:49,413 --> 00:14:51,758
NEXT, THE OPERATOR'S CAB --
250
00:14:51,758 --> 00:14:53,586
IT'S INSULATED FOR SOUND
251
00:14:53,586 --> 00:14:56,586
AND SITS
ON A SHOCK-ABSORBER SYSTEM.
252
00:14:58,413 --> 00:15:00,586
THEN THE VARIOUS
ELECTRICAL HOOKUPS,
253
00:15:00,586 --> 00:15:02,896
INCLUDING THESE THICK CABLES.
254
00:15:02,896 --> 00:15:06,034
EACH ONE CONTAINS
MORE THAN 1,000 WIRES,
255
00:15:06,034 --> 00:15:08,413
CARRYING NEARLY 10,000 AMPS.
256
00:15:13,724 --> 00:15:16,724
NOW A HOOD GOES OVER THE ENGINE
AND ALTERNATOR
257
00:15:16,724 --> 00:15:19,103
TO PROTECT THEM
FROM THE ELEMENTS.
258
00:15:19,103 --> 00:15:21,689
FROM HERE, THE LOCOMOTIVE
GOES TO ANOTHER DEPARTMENT
259
00:15:21,689 --> 00:15:23,689
FOR PAINT AND DECALS.
260
00:15:27,034 --> 00:15:30,620
THE FINISHED LOCOMOTIVE
IS 75 FEET LONG.
261
00:15:30,620 --> 00:15:33,827
FUELED UP,
IT WEIGHS 225 TONS
262
00:15:33,827 --> 00:15:35,896
AND, DEPENDING ON THE TERRAIN,
263
00:15:35,896 --> 00:15:39,620
CAN HAUL A TRAIN
UP TO 6/10 OF A MILE LONG.
264
00:15:49,931 --> 00:15:52,000
Narrator: THE FIRST CLOTHESPIN
WAS INVENTED
265
00:15:52,000 --> 00:15:54,448
IN THE EARLY 1800s
BY THE SHAKERS.
266
00:15:54,448 --> 00:15:56,448
IT WAS A CYLINDRICAL
PIECE OF WOOD
267
00:15:56,448 --> 00:15:58,724
WITH A VERTICAL NOTCH
CUT INTO THE BOTTOM.
268
00:15:58,724 --> 00:16:01,413
IN 1853, AN AMERICAN INVENTOR
269
00:16:01,413 --> 00:16:04,551
PATENTED A SPRING-LOADED,
TWO-PIECE LEVER CLOTHESPIN.
270
00:16:04,551 --> 00:16:08,620
THAT'S THE TYPE STILL PRODUCED
TODAY IN BOTH PLASTIC AND WOOD.
271
00:16:11,344 --> 00:16:15,172
THIS CZECH COMPANY MAKES
CLOTHESPINS OUT OF BEECH WOOD.
272
00:16:15,172 --> 00:16:18,172
BEECH IS IDEAL
BECAUSE IT'S HARD AND DURABLE.
273
00:16:20,379 --> 00:16:22,724
WHEN THE LOGS ARRIVE
AT THE FACTORY,
274
00:16:22,724 --> 00:16:26,000
AN AUTOMATED BAND SAW
SLICES EACH ONE LATERALLY
275
00:16:26,000 --> 00:16:28,793
INTO 2.8-INCH-THICK PLANKS.
276
00:16:30,068 --> 00:16:32,206
WOOD IS NATURALLY DAMP,
277
00:16:32,206 --> 00:16:34,758
SO IT'S CRITICAL
TO DRY THE PLANKS.
278
00:16:34,758 --> 00:16:36,827
OTHERWISE,
CLOTHESPINS MADE FROM THEM
279
00:16:36,827 --> 00:16:38,827
WOULD REPEATEDLY
EXPAND AND CONTRACT
280
00:16:38,827 --> 00:16:40,310
WITH TEMPERATURE CHANGES
281
00:16:40,310 --> 00:16:42,103
AND EVENTUALLY CRACK.
282
00:16:42,103 --> 00:16:45,758
FIRST, THE PLANKS AIR-DRY
OUTDOORS FOR ABOUT 7 MONTHS,
283
00:16:45,758 --> 00:16:49,103
UNTIL THEIR MOISTURE LEVEL
DROPS TO 20%.
284
00:16:49,103 --> 00:16:52,275
THEN THE PLANKS GO INTO A KILN
FOR 3 OR 4 WEEKS
285
00:16:52,275 --> 00:16:56,413
TO BRING THE MOISTURE LEVEL DOWN
TO BETWEEN 8% AND 10%.
286
00:16:57,689 --> 00:17:00,793
THE WOOD, NOW STABLE,
WORKERS CUT THE PLANKS
287
00:17:00,793 --> 00:17:04,206
INTO SHORTER,
MORE MANAGEABLE LENGTHS...
288
00:17:04,206 --> 00:17:09,000
THEN INTO
2 1/2" x 2 1/2" BLOCKS.
289
00:17:14,551 --> 00:17:17,344
NEXT THEY FEED THE BLOCKS
INTO A CUTTING MACHINE.
290
00:17:17,344 --> 00:17:19,103
ITS FOUR CIRCULAR BLADES
291
00:17:19,103 --> 00:17:21,758
SIMULTANEOUSLY SAW
THROUGH EACH BLOCK,
292
00:17:21,758 --> 00:17:24,000
CUTTING IT INTO FIVE PIECES.
293
00:17:24,000 --> 00:17:27,344
EACH PIECE
IS 4/10 OF AN INCH THICK.
294
00:17:30,931 --> 00:17:33,758
AS THESE THIN PIECES
EXIT THE MACHINE,
295
00:17:33,758 --> 00:17:35,551
WORKERS INSPECT THEM.
296
00:17:35,551 --> 00:17:38,758
ANY PIECES WITH KNOTS
OR OTHER FLAWS ARE REMOVED
297
00:17:38,758 --> 00:17:41,758
AND SOLD TO A FACTORY
THAT MAKES MOUSETRAPS.
298
00:17:41,758 --> 00:17:43,724
THE PIECES WHICH PASS INSPECTION
299
00:17:43,724 --> 00:17:46,655
GO INTO AN AUTOMATED
MILLING MACHINE.
300
00:17:47,896 --> 00:17:51,034
IT CUTS EACH PIECE
INTO FOUR SMALLER PIECES
301
00:17:51,034 --> 00:17:53,068
THEN, IN EACH SMALLER PIECE,
302
00:17:53,068 --> 00:17:56,310
CARVES THE SHAPE OF
A CLOTHESPIN CLIP ON THE FRONT
303
00:17:56,310 --> 00:17:59,000
AND A NOTCH IN THE BACK.
304
00:18:10,000 --> 00:18:13,586
SO, EACH THIN PIECE OF WOOD
HAS GONE FROM THIS...
305
00:18:13,586 --> 00:18:15,758
TO THIS...
306
00:18:15,758 --> 00:18:17,965
TO THIS.
307
00:18:19,896 --> 00:18:21,379
THE NOTCH ON THE BACK
308
00:18:21,379 --> 00:18:23,448
WILL HOLD THE SPRING
THAT MATES TWO CLIPS
309
00:18:23,448 --> 00:18:25,965
AND PRODUCES THE TENSION
THEY NEED TO GRIP.
310
00:18:28,310 --> 00:18:31,965
THE NEXT MACHINE SAWS FOUR LINES
DOWN EACH PIECE,
311
00:18:31,965 --> 00:18:36,310
CUTTING IT
INTO FIVE IDENTICAL CLIPS.
312
00:18:40,206 --> 00:18:41,655
BEFORE...
313
00:18:41,655 --> 00:18:43,517
AND AFTER.
314
00:18:43,517 --> 00:18:46,620
ALL THAT CUTTING LEAVES
ROUGH, SPLINTERED EDGES,
315
00:18:46,620 --> 00:18:50,206
SO WORKERS NOW LOAD THE CLIPS
INTO A SANDING BARREL.
316
00:18:50,206 --> 00:18:53,034
AS THE BARREL REVOLVES,
317
00:18:53,034 --> 00:18:55,137
THE CLIPS RUB
AGAINST EACH OTHER,
318
00:18:55,137 --> 00:18:58,413
THE ABRASION GRADUALLY
SMOOTHING THE ROUGH WOOD.
319
00:18:58,413 --> 00:19:02,448
WORKERS ALSO PLACE
A PIECE OF WAX AMID THE CLIPS.
320
00:19:02,448 --> 00:19:04,034
AS THE BARREL TURNS,
321
00:19:04,034 --> 00:19:06,172
PARTICLES RUB OFF
AND COAT THE WOOD,
322
00:19:06,172 --> 00:19:08,137
MAKING IT EVEN SMOOTHER.
323
00:19:08,137 --> 00:19:11,000
MEANWHILE,
ANOTHER AUTOMATED MACHINE
324
00:19:11,000 --> 00:19:14,931
MAKES THE SPRINGS
OUT OF 5/100"-THICK IRON WIRE.
325
00:19:14,931 --> 00:19:18,034
THE WIRE HAS HAS A ZINC COATING
ON IT TO PREVENT RUST.
326
00:19:18,034 --> 00:19:19,620
WATCH IN SLOW MOTION
327
00:19:19,620 --> 00:19:22,206
HOW THE MACHINE
TWISTS THE WIRE SEVEN TIMES
328
00:19:22,206 --> 00:19:24,586
TO MAKE THE COIL PORTION
OF THE SPRING
329
00:19:24,586 --> 00:19:29,275
THEN BENDS THE ENDS TO MAKE THE
PART THAT FITS INTO THE NOTCH.
330
00:19:29,275 --> 00:19:33,034
WITH ALL THE PARTS READY TO GO,
IT'S ASSEMBLY TIME.
331
00:19:33,034 --> 00:19:35,206
WORKERS LOAD CLIPS AND SPRINGS
332
00:19:35,206 --> 00:19:37,724
INTO SEPARATE CHUTES
OF THE ASSEMBLY MACHINE.
333
00:19:37,724 --> 00:19:39,517
AS EACH SPRING DROPS DOWN,
334
00:19:39,517 --> 00:19:42,517
A MECHANICAL FINGER
PUSHES THE END ASIDE
335
00:19:42,517 --> 00:19:46,275
TO CLEAR THE WAY FOR A PAIR
OF CLIPS TO ENCASE THE COIL.
336
00:19:46,275 --> 00:19:49,931
THEN IT RELEASES THE END OF THE
SPRING INTO THE CLIP NOTCHES.
337
00:19:49,931 --> 00:19:51,689
THE MACHINE DOES ALL THIS
338
00:19:51,689 --> 00:19:54,482
AT A RATE OF 8,000 CLOTHESPINS
PER HOUR.
339
00:19:54,482 --> 00:19:59,034
THE FINISHED CLOTHESPINS
DROP ONTO A CONVEYOR BELT
340
00:19:59,034 --> 00:20:01,000
THAT TRANSPORTS THEM
TO THE NEXT MACHINE,
341
00:20:01,000 --> 00:20:03,965
WHICH GROUPS THEM BY THE DOZEN.
342
00:20:08,517 --> 00:20:12,275
FROM THERE, IT'S OFF
TO THE PACKAGING MACHINE,
343
00:20:12,275 --> 00:20:16,310
WHICH IS PRESET TO ASSEMBLE
A SPECIFIC RETAIL FORMAT.
344
00:20:16,310 --> 00:20:18,379
THIS IS A 36-COUNT PACKAGE,
345
00:20:18,379 --> 00:20:22,034
SO THEY'VE SET THE MACHINE TO
STACK THREE DOZEN CLOTHESPINS.
346
00:20:24,275 --> 00:20:27,068
AFTER PLACING A PAPER LABEL
ON TOP,
347
00:20:27,068 --> 00:20:29,862
THE MACHINE SHRINK-WRAPS
THE PACKAGE.
348
00:20:34,172 --> 00:20:37,310
CLOTHESPINS MAY BE
RATHER ORDINARY PRODUCTS,
349
00:20:37,310 --> 00:20:40,965
BUT THEIR REPUTATION
IS ALWAYS ON THE LINE.
350
00:20:51,068 --> 00:20:53,758
IF YOU HAVE ANY COMMENTS
ABOUT THE SHOW,
351
00:20:53,758 --> 00:20:56,551
OR IF YOU'D LIKE TO SUGGEST
TOPICS FOR FUTURE SHOWS,
352
00:20:56,551 --> 00:20:58,551
DROP US A LINE AT...
28225
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