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

Yaremwe na

Martin

6. Ukwakira 2026NO
29
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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.
Hagati
About 3 hours

Amabwiriza

1

Pull on the flange

Gupakira ikaye ya 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.

Ibikoresho by'iyi ntambwe:

Umurongo ugororotse w'icyuma cyoroshyeUmurongo ugororotse w'icyuma cyoroshye1 igice
Ibitorezo by'imashiniIbitorezo by'imashini1 igice
Umupira w'Impande EsheshatuUmupira w'Impande Esheshatu1 igice

Ibikoresho bikenewe:

Umucumita w'IbyumaUmucumita w'Ibyuma
Ifatiro ry'AmezaIfatiro ry'Ameza
InyundoInyundo
Icyuma Cyivumbura Kidafite InsingaIcyuma Cyivumbura Kidafite Insinga
Ibyuma Byinshi byo GucukuraIbyuma Byinshi byo Gucukura
Isupana ihindurwaIsupana ihindurwa
Uturindantoki tw'uruhu tw'akaziUturindantoki tw'uruhu tw'akazi
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.

Ibikoresho by'iyi ntambwe:

Umurongo ugororotse w'icyuma cyoroshyeUmurongo ugororotse w'icyuma cyoroshye1 igice

Ibikoresho bikenewe:

Umucumita w'IbyumaUmucumita w'Ibyuma
Amakariso (Ikariso ry'Intoki)Amakariso (Ikariso ry'Intoki)
Ifatiro ry'AmezaIfatiro ry'Ameza
InyundoInyundo
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.

Ibikoresho by'iyi ntambwe:

Ibitorezo by'imashiniIbitorezo by'imashini1 igice
Uruziga RurambuyeUruziga Rurambuye1 igice
Umupira w'Impande EsheshatuUmupira w'Impande Esheshatu1 igice

Ibikoresho bikenewe:

Igicukuzi cyo Gushyira IkimenyetsoIgicukuzi cyo Gushyira Ikimenyetso
Icyuma Cyivumbura Kidafite InsingaIcyuma Cyivumbura Kidafite Insinga
Ibyuma Byinshi byo GucukuraIbyuma Byinshi byo Gucukura
Ikusanyirizo ry'ibitoreziIkusanyirizo ry'ibitorezi
Isupana ihindurwaIsupana ihindurwa
Amadarubindi Asobanutse yo KwirindaAmadarubindi Asobanutse yo Kwirinda
7

The patent drawing

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

Ibikoresho by'iyi ntambwe:

Amacupa yo kubika ibiryo (Mason)Amacupa yo kubika ibiryo (Mason)1 igice
AmaziAmazi1 igice

Ibikoresho bikenewe:

Isafuriya y'amazi yo ku zikoIsafuriya y'amazi yo ku ziko
Igipima Imbaraga (Iminzani y'Umuzingo)Igipima Imbaraga (Iminzani y'Umuzingo)
Uturindantoki twihanganira ubushyuheUturindantoki twihanganira ubushyuhe
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.

Ibikoresho

6

Ibikoresho bikenewe

14

CC0 Umurenge rusange

Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.

Shyigikira Umuremyi ugura ibicuruzwa binyuze muri Blueprint ye Komisiyo y'Umuremyi byashyizweho n'Abacuruzi, cyangwa kora verisiyo nshya y'iyi Blueprint ukayinjiza nk'isano muri Blueprint yawe kugira ngo musangire inyungu.

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