SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Stopwatch: Lugrin, 1876
Henri Alfred Lugrin of New York patented this timing watch in 1876, US 176,231. Instead of placing the timing hand on the face, where it needs more gearing, he put the timing hand and its own dial on top of the watch movement. The hand is geared to the watch's second wheel through a pinion and wheel, and sits on its post by a tube and friction spring, so it can be stopped while the watch runs on. A heart-shaped cam and lever return it to the start, and the same lever also returns a minute hand on a small sectional dial beside it. A stop lever holds the timing hand. Lugrin's hand moves in fifths of a second but he calls it the quarter-second hand.
Juu
Watchmaker's work
Maagizo
1
1
Timing hand and dial
Timing hand and dial
Mount the timing hand and its dial on top of the watch movement, the hand on a short centre post.
Vifaa kwa hatua hii:
Mtambo wa saa1 kipande
Mshale na uso wa kupimia muda1 kipandeZana zinazohitajika:
Seti ya koleo ndogo za usahihi
Seti ya bisibisi2
2
Gear it to the movement
Gear it to the movement
Gear the post to the second wheel of the watch train through a pinion and wheel.
Vifaa kwa hatua hii:
Pinioni na gurudumu la mfululizo wa kupimia1 kipandeZana zinazohitajika:
Seti ya koleo ndogo za usahihiSeti ya bisibisi3
3
Friction connection
Friction connection
Connect the hand to its post by a tube and friction spring, so the hand can be stopped without stopping the movement.
Vifaa kwa hatua hii:
Springi na mrija wa msuguano1 kipandeZana zinazohitajika:
Seti ya koleo ndogo za usahihi4
4
Minute recorder
Minute recorder
Place the minute hand and its sectional dial at one side of the timing hand, on a post geared with the barrel wheel, connected by the same kind of tube and friction spring.
Vifaa kwa hatua hii:
Mshale na uso wa kuhesabu dakika1 kipandeZana zinazohitajika:
Seti ya koleo ndogo za usahihiSeti ya bisibisi5
5
Return and stop
Return and stop
Fit the heart-shaped cams and the return lever, extended so one lever returns both hands to the start at once, and fit the stop lever.
Vifaa kwa hatua hii:
Kamu ya moyo na nyenzo ya kurudisha1 kipande
Nyenzo ya kusimamisha1 kipandeZana zinazohitajika:
Seti ya koleo ndogo za usahihiSeti ya bisibisiVifaa
7- 1 kipandeKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- Kishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
Mchoro huu unatengeneza
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.