LIST
FEGURÐ OG VELLÍÐAN
HANDVERK
MENNING OG SAGA
SKEMMTUN
UMHVERFI
MATUR OG DRYKKUR
ÖFUGVERKFRÆÐI
VÍSINDI
ÍÞRÓTTIR
TÆKNI
KLÆÐANLEG TÆKNI
Thermostatic Electric Iron
The electric flat-iron already published has one state: on. Leave it plugged in and it keeps getting hotter until something scorches - the user is the thermostat. The rung above it puts the Butz idea, a bimetallic strip, inside the iron: the iron holds whatever temperature the dial asks for, and silk and linen each get their own.
**US 2,723,336**, "Thermostatically controlled electric flatiron or the like", Swenson and Finlayson, assigned to General Electric, filed 23. July 1953, granted 8. November 1955.
**You build the thermostat, not the mains appliance**: a bimetallic strip switching a battery-powered lamp, measured on a hotplate - then you measure a real iron's cycling from the outside.
Byrjandi
2 hours
Leiðbeiningar
1
1
A switch from a strip
A switch from a strip
Clamp one end of the bimetallic strip. Set a screw or a stiff wire as the contact so the free end presses it at room temperature. Wire strip and contact in series with the LED, its resistor and the battery holder: the lamp is on while they touch.
Efni fyrir þetta skref:
Tvímálmsræma1 stykki
LED - Basic 5mm1 stykki
Viðnámasett1 sett
Dupont-tengivírasett (karl-kvenkyns)1 settNauðsynleg verkfæri:
AA-rafhlöðuhaldari (4 sellur)
Fjaðurklemma2
2
Heat it and watch
Heat it and watch
Tape the thermocouple to the strip. Warm it gently on the hotplate and note the temperature when the lamp goes out; let it cool and note when it lights again. Three runs.
Nauðsynleg verkfæri:
Hitaplata
Hitanemapar með aflestri
Tær öryggisgleraugu3
3
Move the contact
Move the contact
Turn the contact screw in by half a turn so the strip must bend further, and repeat. That screw is the iron's fabric dial.
Nauðsynleg verkfæri:
Hitanemapar með aflestri4
4
Measure a real iron
Measure a real iron
Stand a steam iron on its heel on a heatproof surface at a mid setting. With the infrared thermometer on the soleplate and a stopwatch, time how long its indicator lamp stays on and off over several cycles, and note the highest and lowest readings.
Nauðsynleg verkfæri:
Gufustraujárn
Innrauður hitamælir
Skeiðklukka5
5
Bend, hysteresis, duty cycle
Bend, hysteresis, duty cycle
Hleð Jupyter-vinnubók…
6
6
History & Context
History & Context
**What the patent specifies:** a flatiron whose heating element is switched by a thermostat set from a fabric dial, holding the soleplate at the chosen temperature. **Modern build (derived):** the bimetal switch alone, on safe low voltage, plus outside measurements of a working iron.
The same bimetal switch went into kettles, ovens, toasters and motor overload protectors. Its limits: the strip switches over a few degrees of swing, it ages with cycling, and it senses its own temperature - not the cloth's.
Efni
4- 1 stykkiStaðgengill
- LED - Basic 5mm10% þóknun1 stykki$0.77
- frá$5.70
- Staðgengill
Nauðsynleg verkfæri
8- Staðgengill
- Staðgengill
- Staðgengill
- Staðgengill
- Staðgengill
- Gufustraujárn10% þóknunStaðgengill
- Staðgengill
- Staðgengill
Áætlað alls
Það sem smiðurinn keypti. Efni án verðs færðu þar sem þú kaupir það.
Tengd Blueprint
Þessi blueprint deila þekkingu — tækni, efni eða meginreglur
CC0 opinbert ríki
Þessi teikning er gefin út undir CC0. Þér er frjálst að afrita, breyta, dreifa og nota þetta verk í hvaða tilgangi sem er, án þess að biðja um leyfi.
Studdu smiðinn með því að kaupa vörur í gegnum teikningu hans þar sem hann fær þóknun smiða sem seljendur ákvarða, eða búðu til nýja endurskoðun á þessari teikningu og tengdu hana sem tengingu í þinni eigin teikningu til að deila tekjum.