SINING
BEAUTY AT WELLNESS
CRAFTS
KULTURA AT KASAYSAYAN
LIBANGAN
KAPALIGIRAN
PAGKAIN AT INUMIN
REVERSE ENGINEERING
AGHAM
ISPORTS
TEKNOLOHIYA
MGA WEARABLE
The Pivot-Point Can Opener: A Spike at the Centre, a Blade Set to the Size
Charles Messenger, Cleveland, Ohio · Public domain (expired patent)
Martin

Nilikha ni

Martin

6. Oktubre 2026NO
30
0
0
0
0

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.
Katamtaman
About 3 hours

Mga Tagubilin

1

Hole size and hand force

Naglo-load ng Jupyter notebook…
2

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

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

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.

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
Pantudlok sa GitnaPantudlok sa Gitna
Walang-Kableng BarenaWalang-Kableng Barena
Hanay ng Talim ng BarenaHanay ng Talim ng Barena
Hanay ng Pinong KikilHanay ng Pinong Kikil
5

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.

Mga materyales para sa hakbang na ito:

Bilog na Bara ng Malambot na AseroBilog na Bara ng Malambot na Asero1 piraso
Patag na Baras na Malambot na AseroPatag na Baras na Malambot na Asero1 piraso

Mga kailangang kasangkapan:

Lagaring Pang-metalLagaring Pang-metal
Kikil (Kikil na Pangkamay)Kikil (Kikil na Pangkamay)
Set sa paggawa ng sinulid ng turnilyoSet sa paggawa ng sinulid ng turnilyo
Walang-Kableng BarenaWalang-Kableng Barena
Hanay ng Talim ng BarenaHanay ng Talim ng Barena
HasaanHasaan
6

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.

Mga materyales para sa hakbang na ito:

Tuerkang HeksagonalTuerkang Heksagonal1 piraso
Mga tarugong matigas na kahoyMga tarugong matigas na kahoy1 piraso
Epoksing dalawang bahagiEpoksing dalawang bahagi1 piraso

Mga kailangang kasangkapan:

Walang-Kableng BarenaWalang-Kableng Barena
Hanay ng Talim ng BarenaHanay ng Talim ng Barena
Plais na Patag ang NgusoPlais na Patag ang Nguso
7

The patent drawing

US 70,010 drawing sheet, public domain (expired patent).
Hakbang 7 - Image 1
8

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.
Hakbang 8 - 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
Guwantes na Katad PangtrabahoGuwantes na Katad Pangtrabaho
9

A cutter that wanders, tears or slips

Pivot-point can opener troubleshooting.

Flow

Loading...
10

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.

Mga Materyales

6

Mga Kinakailangang Kasangkapan

13

Ang blueprint na ito ay gumagawa ng

Thumbnail
Placeholder

Pambukas ng lata (pangkamay)

Free

6
0

Kaugnay na Blueprint

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

Warner Can Opener

Warner Can Opener

ni ForgeNO

CRAFTS

37
0
0
0
0
0
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

ni ForgeNO

Paggawa ng Metal

26
0
0
0
0
0
The Shouldered-Blade Can Opener: The Shoulders Are the Fulcrum

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

ni ForgeNO

Paggawa ng Metal

30
0
0
0
0
0

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.

Talakayan

(0)

Mag-login upang sumali sa talakayan

Naglo-load ng mga komento...