SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
The Pivot-Point Can Opener: A Spike at the Centre, a Blade Set to the Size
A knife driven round a can top wanders, and leaves a ragged hole of no particular size.
Charles Messenger of Cleveland, Ohio, received US 70,010, dated 22 October 1867, for a tool for opening sheet-metal cans: a plate fixed in a handle, a pointed rod at its end thrust through the centre of the top as a pivot, and a blade slipped on the rod through one of several holes in the plate, held by a ring; turning the handle round cuts a round hole, small or large.
This rung works out the hand force for each hole size, then builds the plate, pivot and blade from steel and opens a can.
Kati
About 3 hours
Maagizo
1
1
Hole size and hand force
Hole size and hand force
Inapakia daftari la Jupyter…
2
2
A turning cutter before it
A turning cutter before it
The embedded blueprint cuts tin with a turning wheel against a fixed cutter. Messenger turns the whole tool round a centre spike.
3
3
Read US 70,010
Read US 70,010
"The apparatus is held in the right hand, and the point C' thrust through the centre of the top of the can. The handle is then brought down so as to cause the blade to penetrate the cover; the instrument is turned around the circumference of the top, the point acting as a pivot, and the handle as a lever; the blade, as the instrument turns, will cut out a round hole through which the contents of the can may be emptied."
4
4
Make the plate
Make the plate
Cut 90 mm of 25 × 3 mm flat bar. Drill a 5 mm hole 6 mm from one end for the rod, and three 4 × 8 mm slots at 30, 45 and 60 mm from it for the blade. File the slots square.
Vifaa kwa hatua hii:
Pau Bapa la Chuma Laini1 kipandeZana zinazohitajika:
Msumeno wa chuma
Kibano cha meza ya kazi
Kigwe cha Katikati
Kekee cha Betri
Seti ya vichimbuzi
Seti ya tupa ndogo5
5
Make the rod and blade
Make the rod and blade
Cut 100 mm of 5 mm steel rod, file one end to a sharp point, and thread the other M5. Cut the blade from flat bar, drill it for the rod, and file its lower end to a cutting edge.
Vifaa kwa hatua hii:
Ufito wa chuma laini1 kipandePau Bapa la Chuma Laini1 kipandeZana zinazohitajika:
Msumeno wa chuma
Tupa (Tupa ya Mkono)
Seti ya kukata nyuzi za skrubuKekee cha BetriSeti ya vichimbuzi
Jiwe la kunoa6
6
Assemble
Assemble
Push the rod through the plate's end hole so the point stands 12 mm below. Slip the blade on the rod and down through a slot; hold both with a nut on the rod's thread. Fit the plate into a hardwood handle with epoxy.
Vifaa kwa hatua hii:
Nati ya pembe sita1 kipande
Vijiti vya mbao ngumu1 kipande
Epoksi ya Sehemu Mbili1 kipandeZana zinazohitajika:
Kekee cha BetriSeti ya vichimbuzi
Koleo la Mdomo Bapa7
7
The patent drawing
The patent drawing
US 70,010 drawing sheet, public domain (expired patent).
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8
Open a can at two sizes
Open a can at two sizes
Stand a sealed can on the kitchen scale. Thrust the point into the centre, bring the handle down and turn it round; read the peak load and time a full circle. Move the blade to another slot and repeat.
Vifaa kwa hatua hii:
Kopo la bati1 kipandeZana zinazohitajika:
Mizani ya dijitali ya jikoni
Saa ya kupima muda
Glavu za Kazi za Ngozi9
9
A cutter that wanders, tears or slips
A cutter that wanders, tears or slips
Pivot-point can opener troubleshooting.
Flow
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10
10
History and honest limits
History and honest limits
**Charles Messenger** of Cleveland, Ohio, received US 70,010, dated 22 October 1867, for opening oyster, paint and fruit cans. The ring slides on the rod and can be removed to change the blade; a knife with radial arms, each with two sharp edges, gives a spare edge when one is dull. His claim covers the rod, blade and ring in combination with the plate.
**Honest limits.** A nut stands in for his sliding ring, and an unhardened blade for a steel one. Your loads and times are the result.
Vifaa
6- 1 kipandeKishikilia Nafasi
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Zana Zinazohitajika
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- 1 vendor sell this, none ship to you yetKishikilia Nafasi
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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.