UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Heat Gun for Paint Removal: Ferris, 1963
Edwin W. Ferris of Greenwich, Connecticut, patented this electric paint remover in 1963, US 3,094,606: a heat gun that softens old paint without a flame. A fan in a housing with a handle blows air through a barrel. Inside is a removable heating unit, a ceramic core wound with resistance wire, with a second coil on a plate across it. The barrel's inner wall is a metal jacket: cooling air flows outside it while the air heated by the coils leaves the mouth at 500–1300 °F (260–700 °C), so the outside stays cool enough to hold. For household current Ferris proposed 110 V and a 1300 W element. A ring with a lever at the barrel's root sets how much air is heated.
Hejuru
Workshop process
Amabwiriza
1
1
Housing and fan
Housing and fan
Build the gun-like housing with a handle and a fan housing; fit a drum-type fan driven by a small motor.
Ibikoresho by'iyi ntambwe:
Agasanduku k'imbunda y'umwuka ushyushye gafite igikonoshwa cya ventilateri1 igice
Iventilateri y'ingoma na moteri nto1 igiceIbikoresho bikenewe:
Ikusanyirizo ry'ibitorezi2
2
Heating unit
Heating unit
Wind resistance wire round a cylindrical ceramic core pierced with holes, ending in a ceramic disc with air holes and bayonet connectors so the unit can be taken out and replaced. Fit a ceramic plate with a second coil across the inside of the core; connect both coils in parallel.
Ibikoresho by'iyi ntambwe:
Intangiriro ishyushya ya céramique ifite bobine z'ubudahangarwa1 igiceIbikoresho bikenewe:
Ifashi rikora byinshi3
3
Barrel
Barrel
Mount the heating unit in the barrel, whose inner wall forms a jacket: cooling air passes outside it from the fan housing to the atmosphere, while heated air passes through the core to the mouth.
Ibikoresho by'iyi ntambwe:
Umuheha w'icyuma ufite ikoti1 igiceIbikoresho bikenewe:
Ikusanyirizo ry'ibitorezi4
4
Air control
Air control
Fit the control ring with its lever between the core's disc and the ceramic base; turning it opens or closes rows of holes and sets how much of the air passes the heating coils.
Ibikoresho by'iyi ntambwe:
Impeta igenzura itemba ry'umwuka1 igiceIbikoresho bikenewe:
Ikusanyirizo ry'ibitoreziIbikoresho
5- Umwanya
- 1 igiceUmwanya
- Umwanya
Ibikoresho bikenewe
2- Umwanya
- Umwanya
Iki gishushanyo gikora
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