SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
The Reusable Can Opener: A Stop on the Knife and a Rim Left to Use Again
A can hacked open is fit only to be thrown away.
Richard H. Atwell of Baltimore, Maryland, received US 86,626, dated 9 February 1869, for a can opener: a bar at right angles to a handle that carries a piercer, a hook-shaped fulcrum pin in a hole made at the centre of the piece to be removed, a concave knife in one of several holes, and a stop that limits how far the knife goes in; the edges of the opening are so turned "as to adapt the can to be again used."
This rung works out which hole leaves a usable rim, then builds the bar, pin, knife and stop and opens a can cleanly enough to refill.
Kati
About 3 hours
Maagizo
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1
Which hole leaves a rim
Which hole leaves a rim
Inapakia daftari la Jupyter…
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2
A centre-pivot cutter before it
A centre-pivot cutter before it
The embedded blueprint cuts a round hole round a spike. Atwell adds a stop on the knife and turns the edge so the can is fit to use again.
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3
Read US 86,626
Read US 86,626
"The edges of the opening made in the can are so turned, by this construction of knife, as to adapt the can to be again used."
"A rest or stop, D, preferably cast on the bar, and arranged between the fulcrum a and knife C, limits the insertion of the knife, and thus prevents its hanging in the tin at its shank."
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4
Make the bar and handle
Make the bar and handle
Cut 90 mm of 25 × 3 mm flat bar and drill 5 mm holes 20, 28 and 36 mm from one end. Fix its other end at right angles into a hardwood handle with epoxy, and file a point on the handle's far end as the piercer.
Vifaa kwa hatua hii:
Pau Bapa la Chuma Laini1 kipande
Vijiti vya mbao ngumu1 kipande
Epoksi ya Sehemu Mbili1 kipandeZana zinazohitajika:
Msumeno wa chuma
Kigwe cha Katikati
Kekee cha Betri
Seti ya vichimbuzi
Tupa (Tupa ya Mkono)5
5
Make the hook pin and stop
Make the hook pin and stop
Bend 4 mm steel rod into a hook and fix it through the bar's end as the fulcrum pin. Epoxy a hardwood stop under the bar between the pin and the first hole, 4 mm deep.
Vifaa kwa hatua hii:
Ufito wa chuma laini1 kipande
Kipande cha mbao ngumu1 kipandeEpoksi ya Sehemu Mbili1 kipandeZana zinazohitajika:
Kibano cha meza ya kazi
NyundoMsumeno wa chumaKekee cha BetriSeti ya vichimbuzi6
6
Make the knife
Make the knife
Cut a knife from 1 mm steel sheet with a 5 mm shank, file its cutting edge concave and its flat side toward the pin. Fit the shank through a hole and nut it on top.
Vifaa kwa hatua hii:
Bati la Chuma Laini1 kipande
Nati ya pembe sita1 kipande
Skrubu za mashine1 kipandeZana zinazohitajika:
Mkasi wa batiTupa (Tupa ya Mkono)
Jiwe la kunoa
Spana inayoweza kurekebishwa
Miwani ya usalama iliyo wazi7
7
The patent drawing
The patent drawing
US 86,626 drawing sheet, public domain (expired patent).
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Open a can for reuse
Open a can for reuse
Pierce the centre of a sealed can's top with the handle's point and hook the pin in. Press the knife through to the stop and turn the bar round once. Measure the rim left and run a finger-safe check along it with a rag.
Vifaa kwa hatua hii:
Kopo la bati1 kipandeZana zinazohitajika:
Kipima-unene cha dijitali cha inchi 6
Saa ya kupima muda
Glavu za Kazi za Ngozi9
9
A knife that hangs, wanders or leaves a ragged rim
A knife that hangs, wanders or leaves a ragged rim
Reusable can opener troubleshooting.
Flow
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10
History and honest limits
History and honest limits
**Richard H. Atwell** of Baltimore, Maryland, received US 86,626, dated 9 February 1869. His bar may be cast in one piece with the handle or hinged to it; the knife is held from lateral pressure and bending, its edge preferably concave so it need not be pressed down to its work. When the can is not to be refilled, part of the circle may be cut and the piece bent up.
**Honest limits.** Epoxy and a hardwood stop stand in for his casting, and the knife is unhardened sheet. Your rim measurements are the result.
Vifaa
9- 1 kipandeKishikilia Nafasi
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- 1 kipandeKishikilia Nafasi
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14- Kishikilia Nafasi
- Kishikilia Nafasi
- 1 vendor sell this, none ship to you yetKishikilia Nafasi
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- Kishikilia Nafasi
Mchoro huu unatengeneza
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
CC0 Umma Wote
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