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The Lifting-Cutter Can Opener: A Diagonal Blade Cuts Under and Holds the Disk
William L. Hubbell, Brooklyn, New York · Public domain (expired patent)
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6. Oktubre 2026NO
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The Lifting-Cutter Can Opener: A Diagonal Blade Cuts Under and Holds the Disk

A can opener's knife can slip out of its cut, and the cut disk drops into the can. William L. Hubbell of Brooklyn, New York, received US 69,996, dated 22 October 1867, for a can opener made of a lever with a screw spike that fits any of several holes, to vary the size of the disk, and a cutter set diagonally "so as to cut under and lift up the said disk, and prevent the knife slipping out while in use," holding the disk until it is taken from the can. This rung works out which hole suits which can, then builds the lever, spike and diagonal cutter and opens a can.
Katamtaman
About 3 hours

Mga Tagubilin

1

Spike hole against can size

Naglo-load ng Jupyter notebook…
2

A turning cutter before it

The embedded blueprint cuts round a can with a wheel and a fixed cutter. Hubbell turns a lever round a spike and inclines the cutter so it lifts what it cuts.
3

Read US 69,996

"The cutter d is set into a recess, formed by grooves, on the edges of the lever a, at the curved part b, so that one edge of the cutter projects below the under side of the lever at an inclination, as shown, so that the cutter is prevented from rising by its being below, and inclining inwards under the edge of the disk that is being cut out by revolving either the can or the opener."
4

Make the lever

Cut 180 mm of 25 × 3 mm flat bar and bend the last 20 mm down at about 40° in the vice. Drill and tap three M5 holes 25, 30 and 35 mm from the bend's foot.

Mga materyales para sa hakbang na ito:

Patag na Baras na Malambot na AseroPatag na Baras na Malambot na Asero1 piraso

Mga kailangang kasangkapan:

Lagaring Pang-metalLagaring Pang-metal
Bais sa Mesang PanggawaBais sa Mesang Panggawa
MartilyoMartilyo
Pantudlok sa GitnaPantudlok sa Gitna
Walang-Kableng BarenaWalang-Kableng Barena
Hanay ng Talim ng BarenaHanay ng Talim ng Barena
Set sa paggawa ng sinulid ng turnilyoSet sa paggawa ng sinulid ng turnilyo
RulerRuler
5

Slot the bent end

Saw a slot 1 mm wide and 12 mm deep across the bent end at 25° to the bar with the hacksaw.

Mga kailangang kasangkapan:

Lagaring Pang-metalLagaring Pang-metal
Bais sa Mesang PanggawaBais sa Mesang Panggawa
Hanay ng Pinong KikilHanay ng Pinong Kikil
6

Make and set the cutter

Cut a 16 × 18 mm cutter from 1 mm steel sheet and file both short ends to rounded cutting edges. Set it in the slot with epoxy so one end projects 5 mm below the bar, inclined inward.

Mga materyales para sa hakbang na ito:

Plantsang Malambot na AseroPlantsang Malambot na Asero1 piraso
Epoksing dalawang bahagiEpoksing dalawang bahagi1 piraso

Mga kailangang kasangkapan:

Gunting na pangyeroGunting na pangyero
Kikil (Kikil na Pangkamay)Kikil (Kikil na Pangkamay)
HasaanHasaan
Malinaw na Salaming PangkaligtasanMalinaw na Salaming Pangkaligtasan
7

Make the spike

File the end of an M5 screw to a long taper point. Screw it into the hole that suits the can.

Mga materyales para sa hakbang na ito:

Mga turnilyo ng makinaMga turnilyo ng makina1 piraso

Mga kailangang kasangkapan:

Bais sa Mesang PanggawaBais sa Mesang Panggawa
Kikil (Kikil na Pangkamay)Kikil (Kikil na Pangkamay)
8

The patent drawing

US 69,996 drawing sheet, public domain (expired patent).
Hakbang 8 - Image 1
9

Open a can and lift the disk

Stand a sealed can on the kitchen scale. Thrust the spike into the top's centre, press the cutter through and turn the lever round; read the peak load and time it. Lift the opener and see whether the disk comes with it.
Hakbang 9 - Image 1

Mga materyales para sa hakbang na ito:

LataLata1 piraso

Mga kailangang kasangkapan:

Digital na Timbangang PangkusinaDigital na Timbangang Pangkusina
Panukat ng OrasPanukat ng Oras
Digital na Kalibrador 6 PulgadaDigital na Kalibrador 6 Pulgada
Guwantes na Katad PangtrabahoGuwantes na Katad Pangtrabaho
10

A cutter that rides up, slips or drops the disk

Lifting-cutter can opener troubleshooting.

Flow

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11

History and honest limits

**William L. Hubbell** of Brooklyn, New York, signed his specification on 16 August 1867; US 69,996 is dated 22 October 1867. He wrote that earlier openers with semicircular knives, or tools to perforate and raise the edges, were costly and some were liable to slip. The cutter's edge is rounded outwardly so as not to draw the spike out, and both ends are shaped alike so it can be changed end for end. **Honest limits.** Epoxy in a sawn slot stands in for his grooved recess, and the cutter is unhardened. Your loads and times are the result.

Mga Materyales

5

Mga Kinakailangang Kasangkapan

17

Ang blueprint na ito ay gumagawa ng

Thumbnail
Placeholder

Pambukas ng lata (pangkamay)

Free

7
0

Kaugnay na Blueprint

Ang mga blueprint na ito ay nagbabahagi ng kaalaman — mga teknik, materyales, o prinsipyo

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The Shouldered-Blade Can Opener: The Shoulders Are the Fulcrum

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The Revolving Shear Can Opener: A Wheel and a Fixed Cutter That Cut Tin Like Shears

The Revolving Shear Can Opener: A Wheel and a Fixed Cutter That Cut Tin Like Shears

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Paggawa ng Metal

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Warner Can Opener

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CRAFTS

37
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CC0 Pampublikong Domain

Ang blueprint na ito ay inilabas sa ilalim ng CC0. Malaya kang kumopya, magbago, mamahagi, at gumamit nang walang pahintulot.

Suportahan ang Maker sa pamamagitan ng pagbili ng mga produkto sa kanilang Blueprint Komisyon ng Maker itinakda ng mga Vendor, o lumikha ng bagong bersyon ng Blueprint na ito at isama bilang koneksyon sa iyong Blueprint upang ibahagi ang kita.

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