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Coil Spring: Small Springs Wound Through a Nut (Boy Mechanic, 1915)
Popular Mechanics Co. · Public domain (published 1915)
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Coil Spring: Small Springs Wound Through a Nut (Boy Mechanic, 1915)

Small, even coil springs wound by hand: spring wire is turned round a rod that runs through a nut held in a vise, and the nut's thread lays every coil at the same pitch. Variable: the nut's thread pitch gives open or closed coils. Source: The Boy Mechanic, Book 2 (1915), p. 197. Picture: the book's sketch.
Mwanzo
Unknown

Maagizo

1

Prepare the nut and rod

Take a nut whose thread will take the spring wire, and file a small notch, as deep as the thread, where the thread starts. Take a smooth rod that passes snugly through the nut. Shape one end to fit a brace (or a drill chuck) and drill a hole across the other end for the wire.

Zana zinazohitajika:

Nati ya pembe sitaNati ya pembe sita
Ufito wa chuma lainiUfito wa chuma laini
Tupa ya chumaTupa ya chuma
Kekee cha mkonoKekee cha mkono
2

Wind the spring

Bend the end of the wire at right angles and push it into the hole. Grip the nut in a vise, put the rod through it, and turn the rod with the brace, guiding the wire into the notch at the start of the thread. The wire follows the thread and comes out as an even spring. Cut it to length.

Vifaa kwa hatua hii:

Waya wa chuma cha kamaniWaya wa chuma cha kamani1 kipande

Zana zinazohitajika:

Kibano cha meza ya kaziKibano cha meza ya kazi
Kekee cha mkono chenye nchaKekee cha mkono chenye ncha
Mkasi wa batiMkasi wa bati

Vifaa

1

Zana Zinazohitajika

7

Vifaa vya Michoro Iliyounganishwa

Caliper: Spring-Wire Calipers with a Sliding Loop (Boy Mechanic, 1919)
Usambazaji 10%

Caliper: Spring-Wire Calipers with a Sliding Loop (Boy Mechanic, 1919)

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Coil Spring

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