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ÀWỌN OHUN WÍWỌ̀
The Hinged-Hook Can Opener: A Lever That Hooks Under the Far Side
Martin

Ṣẹ́dá nipasẹ̀

Martin

6. Oṣù Kẹwà 2026NO
25
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The Hinged-Hook Can Opener: A Lever That Hooks Under the Far Side

The cover of a Lyman fruit can is hard to lift, and devices to ease it were not purely mechanical. S. O. Church of West Meriden, Connecticut, received US 61,161, dated 15 January 1867, for a can opener made of "a peculiarly formed lever": one end turned down and spread as a fulcrum on the cover's flange, the other a handle, and between them a hinged hook that takes the flange on the opposite side, set by a thumb on its arm, so that raising the handle draws the cover off. This rung works out the pull on the flange, then builds the lever and hook from flat bar and lifts a sealed jar lid with it.
Àárín
About 3 hours

Ìlànà

1

Pull on the flange

Ń ṣí ìwé Jupyter…
2

The sealed can before it

The embedded blueprint seals food by heat. Church's lever opens a sealed cover without prising at it.
3

Read US 61,161

"My invention, which fully overcomes the difficulty, is purely mechanical, and consists in a peculiarly formed lever, constructed so that one end forms the fulcrum to bear upon the upper side of the flange of the cover, while the other end forms a handle, and between which and the fulcrum is hinged a hook which takes hold beneath the flange of the cover upon the opposite side to the fulcrum, so that by raising the handle the cover is easily removed from the can."
4

Make the lever

Cut 200 mm of 25 × 3 mm flat bar. Bend the last 25 mm down at right angles and screw a 40 mm cross-piece of the bar under it: the spread fulcrum.

Àwọn ohun èlò fún ìgbésẹ̀ yìí:

Ọ̀pá Pẹrẹsẹ Irin Pẹ́lẹ́Ọ̀pá Pẹrẹsẹ Irin Pẹ́lẹ́1 ẹyọ
Skurú ẹ̀rọSkurú ẹ̀rọ1 ẹyọ
Nọ́ọ̀tì Onígun Mẹ́fàNọ́ọ̀tì Onígun Mẹ́fà1 ẹyọ

Àwọn irinṣẹ́ tí a nílò:

Ayùn IrinAyùn Irin
Ìdìmú TábìlìÌdìmú Tábìlì
ÒòlùÒòlù
Ẹ̀rọ Ìlùkòkò AláìlókùnẸ̀rọ Ìlùkòkò Aláìlókùn
Àkójọ Orí ÌlùkòkòÀkójọ Orí Ìlùkòkò
Kọ́kọ́rọ́ tí a lè ṣàtúnṣeKọ́kọ́rọ́ tí a lè ṣàtúnṣe
Ìbọ̀wọ́ Iṣẹ́ AwọÌbọ̀wọ́ Iṣẹ́ Awọ
5

Make the hook

Cut 60 mm of the bar, narrow it to 20 mm, and bend its foot inward 10 mm as the flange. Bend a short arm up from its top for the thumb.

Àwọn ohun èlò fún ìgbésẹ̀ yìí:

Ọ̀pá Pẹrẹsẹ Irin Pẹ́lẹ́Ọ̀pá Pẹrẹsẹ Irin Pẹ́lẹ́1 ẹyọ

Àwọn irinṣẹ́ tí a nílò:

Ayùn IrinAyùn Irin
Àwọn Ìfá (Ìfá Ọwọ́)Àwọn Ìfá (Ìfá Ọwọ́)
Ìdìmú TábìlìÌdìmú Tábìlì
ÒòlùÒòlù
6

Hinge the hook

Drill the hook and the lever 5 mm, 60 mm from the fulcrum, and join them with an M5 screw, two washers and a nut left just slack.

Àwọn ohun èlò fún ìgbésẹ̀ yìí:

Skurú ẹ̀rọSkurú ẹ̀rọ1 ẹyọ
Wáṣà PẹrẹsẹWáṣà Pẹrẹsẹ1 ẹyọ
Nọ́ọ̀tì Onígun Mẹ́fàNọ́ọ̀tì Onígun Mẹ́fà1 ẹyọ

Àwọn irinṣẹ́ tí a nílò:

Igi Àmì ÀárínIgi Àmì Àárín
Ẹ̀rọ Ìlùkòkò AláìlókùnẸ̀rọ Ìlùkòkò Aláìlókùn
Àkójọ Orí ÌlùkòkòÀkójọ Orí Ìlùkòkò
Ìṣù àwọn ohun ìyí skurúÌṣù àwọn ohun ìyí skurú
Kọ́kọ́rọ́ tí a lè ṣàtúnṣeKọ́kọ́rọ́ tí a lè ṣàtúnṣe
Gílásì Ààbò Tí Ó Mọ́Gílásì Ààbò Tí Ó Mọ́
7

The patent drawing

US 61,161 drawing sheet, public domain (expired patent).
Ìgbésẹ̀ 7 - Image 1
8

Seal a jar and lift its lid

Fill a Mason jar with water from the kettle at the boil, put on a new flat lid, screw the band on and let it cool for two hours so the lid pulls down. Then remove the band. Rest the fulcrum on one side of the lid, thumb the hook under the opposite edge, and lift the handle with the force meter; note the force.
Ìgbésẹ̀ 8 - Image 1

Àwọn ohun èlò fún ìgbésẹ̀ yìí:

Ìgò ìtọ́jú oúnjẹ (Mason)Ìgò ìtọ́jú oúnjẹ (Mason)1 ẹyọ
OmiOmi1 ẹyọ

Àwọn irinṣẹ́ tí a nílò:

Kẹ́tùlù orí ináKẹ́tùlù orí iná
Ẹ̀rọ Ìwọ̀n Agbára (Òṣùwọ̀n Ìsúnkì)Ẹ̀rọ Ìwọ̀n Agbára (Òṣùwọ̀n Ìsúnkì)
Ìbọ̀wọ́ Tí Ń Fara Da OoruÌbọ̀wọ́ Tí Ń Fara Da Ooru
9

A hook that slips, binds or bends

Hinged-hook can opener troubleshooting.

Flow

Loading...
10

History and honest limits

**S. O. Church** of West Meriden, Connecticut, assignor to himself and S. S. Wilcox, received US 61,161, dated 15 January 1867. It was designed for the "Lyman Patent Fruit Can" but applies to other cans of similar construction. The hook is spread and curved, with a flange projecting inward; it uses the flange that is formed on the cover's lower edge when the cover is "struck up." His claim covers the lever with its fulcrum, the hook and the handle. **Honest limits.** A Mason jar's flat lid stands in for Lyman's cover, and screws for his pivot. Your forces are the result.

Àwọn ohun-èlò

6

Àwọn irinṣẹ́ tó nílò

14

Ìtọ́nisọ́nà yìí ń ṣe

CC0 Àgbègbè Gbogbogbò

Blueprint yìí ti jáde lábẹ́ CC0. O lè ṣe àdàkọ, yí padà, pín, àti lò láìsí ìyọ̀ǹda.

Ṣàtìlẹ́yìn Olùṣẹ́dá nípa rírà àwọn ọjà nipasẹ̀ Blueprint wọn Ẹ̀san Olùṣẹ́dá tí àwọn Olùtajà gbé kalẹ̀, tàbí ṣẹ̀dá àtúnṣe tuntun ti Blueprint yìí kí o sì fi sínú Blueprint rẹ gẹ́gẹ́ bí ìsopọ̀ láti pín owó-wíwọlé.

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