SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Scissors: Forged, Ground Hollow and Set
Forge

Imeundwa na

Forge

11. Oktoba 2026NO
31
0
0
0
0

Scissors: Forged, Ground Hollow and Set

As the Sheffield cutlery trade made them, each scissor blade and its bow (finger loop) is forged from steel: a hole is punched through the flattened rod and opened over the point of a small beaked anvil to form the bow. Die-forging under a heavy stamp, with the surplus rim sheared off in a fly-press, was replacing hand forging by 1913. The blades are annealed, filed and drilled for the rivet, then ground: each is hollow on its inner face, concave from rivet to point, and given a slight twist toward the other so the edges meet along their whole length. The pair is fitted, wound with iron wire, hardened, reground and polished, and finally riveted together and set.
Juu
Works process (early 1900s)

Maagizo

1

Forge the blades

Forge each blade and shank; punch a hole through the flattened rod and open it over the beaked anvil to form the bow.

Vifaa kwa hatua hii:

Kipande bapa cha feleji ya zanaKipande bapa cha feleji ya zana1 kipande

Zana zinazohitajika:

Fua ya mhunziFua ya mhunzi
FuaweFuawe
Fuawe ndogo yenye mdomoFuawe ndogo yenye mdomo
Nyundo ya KufuaNyundo ya Kufua
2

Anneal, file and drill

Anneal the blades instead of hardening them; file the shanks and bows to shape, square the joint and bore the rivet hole.

Zana zinazohitajika:

Tupa ya chumaTupa ya chuma
Kekee cha NguzoKekee cha Nguzo
3

Grind

Grind each blade hollow from back to edge, concave from rivet to point, with a slight twist toward its partner.

Zana zinazohitajika:

Jiwe la kunoa la gurudumuJiwe la kunoa la gurudumu
4

Fit and harden

Fit the pair, wind them from the points upward with iron wire, take out the rivet and harden the blades.

Vifaa kwa hatua hii:

Waya wa chumaWaya wa chuma0.5 m

Zana zinazohitajika:

Fua ya mhunziFua ya mhunzi
Ndoo ya kupoza chumaNdoo ya kupoza chuma
5

Finish and set

Grind, glaze and polish the bows and shanks again and burnish them; rivet the blades together and set them so the edges meet along their length.

Vifaa kwa hatua hii:

Rivet za chuma cha puaRivet za chuma cha pua1 kipande

Zana zinazohitajika:

Jiwe la kunoa la gurudumuJiwe la kunoa la gurudumu
Gurudumu la kung'arisha la emeriGurudumu la kung'arisha la emeri

Vifaa

3

Zana Zinazohitajika

9

Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

CC0 Umma Wote

Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.

Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.

Majadiliano

(0)

Ingia kujiunga na majadiliano

Inapakia maoni...