UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
Electric Soldering Iron: Miner, 1890
Earlier electric soldering irons heated a hollow copper head from inside, through finely divided carbon pressed against the tip, so the whole outside of the head lost heat to the air. Willard M. Miner of Plainfield, New Jersey, patented the alternative in 1890, US 421,185: keep the copper head solid, which holds its heat longer, and wind the heating resistance round the outside of it, under a shell that concentrates the heat on the copper and stops it escaping. The coil is German silver wire, wound round a reduced part of the head without touching it, with one end connected to the head and the other to the supply.
Ophakathi
Workshop process
Imiyalelo
1
1
Turn the head
Turn the head
Turn a solid copper head with its point. A little back from the point, cut the head down to a smaller diameter for some distance, leaving a shoulder, and thread a shank at its rear end.
Izinto zokwakha zalesi sinyathelo:
Ubhande lwethusi oluyindilinga1 ucezuAmathuluzi adingekayo:
Umshini Wokuphendula Insimbi2
2
Wind the coil
Wind the coil
Coil German silver wire round the reduced part of the head, the coil slightly larger than the head so the two do not touch. Connect one end of the coil to the head at the shoulder; the other end goes to the supply.
Izinto zokwakha zalesi sinyathelo:
Ucingo lokumelana lwe-German silver1 as requiredAmathuluzi adingekayo:
Udlawu Oluhlanganisiwe3
3
Shell
Shell
Slip on the shell, of brass lined with non-conducting material. Close its inner end with an insulating disc held by a washer and nut on the threaded shank.
Izinto zokwakha zalesi sinyathelo:
Igobolondo lethusi elinomugqa1 ucezu
Idiski yokuvikela ekugcineni1 ucezuAmathuluzi adingekayo:
Isipanela esilungisekayo4
4
Handle
Handle
Screw the shank into the metal socket in the handle, which takes the second connection.
Izinto zokwakha zalesi sinyathelo:
Ingodo Yokhuni Oluqinile Yezibambo1 ucezuIzinto
5- Isibambeli
- 1 as requiredIsibambeli
- Isibambeli
- 1 ucezuIsibambeli
- Isibambeli
Amathuluzi Adingekayo
3- Isibambeli
- Isibambeli
- Isibambeli
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