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UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
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IBYAMBARWA
Glass Cutter: Monce's Hardened Steel Wheel
S. G. Monce's glass cutter (US 91,150, 1869): a small hardened steel wheel, bevelled from both sides to a sharp edge, turning on its own journals in a riveted frame on a handle. Drawn across the glass under pressure it rolls and scores a fine line like a diamond's, for a tenth of a diamond's cost, and it needs less skill. It is the wheel cutter still used today.
The patent gives no sizes, steel grade or hardening method. The picture: the patent's drawing sheet.
Hagati
1 day
Amabwiriza
1
1
Turn the steel wheel
Turn the steel wheel
Turn a steel roller smooth and round, with a solid journal (d) at each end. Its sides (a) run parallel for a short way, then bevel toward each other to meet about midway in the cutting edge (D). Each bevel (c) stands about 45° to the axis, so the two faces are near right angles, or a very little more obtuse. Ours: a hardenable carbon steel and the lathe.
Ibikoresho by'iyi ntambwe:
Inkoni y'icyuma cya karubone (0.6 % C)1 igiceIbikoresho bikenewe:
Imashini yo guhinguza icyuma
Icyuma cyo kuca cy'itorero
Umucumita w'Ibyuma2
2
Harden the wheel
Harden the wheel
Harden the turned wheel. The patent does not say how; ours: heat it in the forge and quench it, as in the connected heat-treatment blueprint.
Ibikoresho bikenewe:
Iziko ryo Gucura
Amazi3
3
Make the two-piece frame
Make the two-piece frame
Make the frame (B) in two halves. Near one end drill a bearing in each half for the journals. Keep each journal a little shorter than the thickness of the frame's sides (e), so a straightedge laid against the sides never touches the journal ends. Ours: steel strip, drill and file.
Ibikoresho by'iyi ntambwe:
Umugozi mugari w'icyuma cya karubone1 igiceIbikoresho bikenewe:
Umucumita w'Ibyuma
Igikoresho cyo gutobora gikoreshwa n'intoki
Ikariso ry'Icyuma
Ifatiro ry'Ameza4
4
Rivet the wheel into the frame
Rivet the wheel into the frame
Set the wheel's journals in the bearings, close the two halves on it and rivet them together. The wheel must turn freely.
Ibikoresho by'iyi ntambwe:
Uruziga rw'icyuma gikata ibirahuri1 igice
Utuma tw'icyuma1 igiceIbikoresho bikenewe:
Inyundo ifite umutwe wa burutaIfatiro ry'Ameza5
5
Fit the handle
Fit the handle
Fix the frame to a handle of any form, by any sound means. Monce used the handle of an ordinary diamond glass cutter.
Ibikoresho by'iyi ntambwe:
Ukuboko1 igiceIbikoresho bikenewe:
Inyundo ifite umutwe wa buruta6
6
Score and break glass
Score and break glass
Draw the cutter quickly across the glass, pressing as you go, so the wheel rolls. It leaves a fine line like a diamond's. Guide it along a straightedge; the frame's sides ride on the edge. Break the glass along the line.
Ibikoresho bikenewe:
Agapimo kagororotse
Ikirahure cy'idirishyaIbikoresho
5- Umwanya
- Umwanya
- Umwanya
- 1 igiceUmwanya
- 1 igiceUmwanya
Ibikoresho bikenewe
11- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
Blueprint zijyanye
Izi blueprint zisangira ubumenyi — uburyo, ibikoresho cyangwa amahame
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.