SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
The Bearing-Block Can Opener: Lean on the Wall, Not on the Contents
Pressing on a full can's top to cut it forces the contents up through the cut.
Guy C. Humphries of Washington, D.C., received US 84,122, dated 17 November 1868, for a can and box opener in which a knife-and-handle lever turns on a fulcrum pin through a hinged bearing block whose two faces rest on the can's outside wall; the knife cuts as it rises, and "the pressure at all times being against the outside wall of the can, avoiding the pressing out of the contents."
This rung shows where the cutting force goes, then builds the lever and bearing block and opens a full can.
Kati
About 3 hours
Maagizo
1
1
Where the force goes
Where the force goes
Inapakia daftari la Jupyter…
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2
A fulcrum on the top before it
A fulcrum on the top before it
The embedded blueprint rests its shoulders on the can's top as the fulcrum. Humphries moves the fulcrum to a block on the outside wall.
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3
Read US 84,122
Read US 84,122
"When a can or box is to be opened, the point of the knife is driven (vertically) through the top, near to one side, as shown in figs. 1 and 2, until the bearing-block C rests on the outside wall of the vessel. The handle is then depressed, causing the knife to cut as it rises, as shown by dotted and broken lines. The handle is now elevated, and slid along on the top of the vessel, preparatory to a renewal of the cutting-operation, keeping the knife-edge against its kerf."
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Make the knife and handle
Make the knife and handle
Cut 170 mm of 25 × 3 mm flat bar. Shape the last 30 mm into a pointed knife with a cutting edge on its upper side, and twist it to stand on edge. Drill a 5 mm hole 20 mm behind the point.
Vifaa kwa hatua hii:
Pau Bapa la Chuma Laini1 kipandeZana zinazohitajika:
Msumeno wa chuma
Kibano cha meza ya kazi
Tupa (Tupa ya Mkono)
Jiwe la kunoa
Kekee cha Betri
Seti ya vichimbuzi
Miwani ya usalama iliyo wazi5
5
Make the bearing block
Make the bearing block
Cut a hardwood block 18 × 30 × 22 mm. Saw a slot down it for the knife, file a concave face with sharp corners on its underside, and drill it across for the pin.
Vifaa kwa hatua hii:
Kipande cha mbao ngumu1 kipandeZana zinazohitajika:
Msumeno wa kukata mikunjoTupa (Tupa ya Mkono)Kekee cha BetriSeti ya vichimbuziKibano cha meza ya kazi6
6
Hinge them
Hinge them
Pass an M5 screw through the block and knife with a washer each side and a nut, loose enough for the block to swing.
Vifaa kwa hatua hii:
Skrubu za mashine1 kipande
Washa bapa1 kipande
Nati ya pembe sita1 kipandeZana zinazohitajika:
Spana inayoweza kurekebishwa7
7
The patent drawing
The patent drawing
US 84,122 drawing sheet, public domain (expired patent).
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8
Open a full can
Open a full can
Stand a sealed, full can of food on the kitchen scale. Drive the knife in near the edge until the block rests on the wall, cut, slide and cut again round the top; watch for liquid at the cut and read the peak load.
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 block that slips, a knife that sticks
A block that slips, a knife that sticks
Bearing-block can opener troubleshooting.
Flow
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10
History and honest limits
History and honest limits
**Guy C. Humphries** of Washington, D.C., received US 84,122, dated 17 November 1868. The fulcrum pin passes loosely through the block and is riveted so the block cannot come off; the fulcrum is midway between the block's two outside edges, preventing slip. The blade may be single or double, edged on one or both sides, for right or left hand. He did not claim a rotary block with a continuous face, nor a stationary block.
**Honest limits.** A hardwood block stands in for his metal one, and a screw for his riveted pin. Your loads are the result.
Vifaa
6- 1 kipandeKishikilia Nafasi
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- 1 kipandeKishikilia Nafasi
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- 1 kipandeKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
Zana Zinazohitajika
12- Kishikilia Nafasi
- Kishikilia Nafasi
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- Kishikilia Nafasi
- 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
The Shouldered-Blade Can Opener: The Shoulders Are the Fulcrum
na Forge
Uchimbaji chuma
32
0
0
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The Single-Blow Can Opener: A Ring of Pointed Teeth Punches the Hole
na Forge
Uchimbaji chuma
28
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The Lid-Lifting Can Opener: One Lip Presses Down While the Other Lifts
na YourGrandma
CHAKULA NA VINYWAJI
40
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CC0 Umma Wote
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