Nwoke abụọ hụrụ
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A two-man saw (nke a maara dị ka "misery whip") bụ a saw e mere maka iji ya mee ihe site abụọ sawyers.[1] Ọ bụ ezie na ụfọdụ chainsaws nke oge a buru oke ibu nke na ha chọrọ mmadụ abụọ iji chịkwaa, osisi crosscut mmadụ abụọ dị mkpa mgbe ejiri ike mmadụ mee ihe.[2] Ụdị ma owuwe ihe ubi gaabụkarị 1 ruo 4 m (4 ruo 12 ụkwụ) nogologo, na mgbe ụfọdụ ruo 5 m (16 ụkwụ), na aka na njedebe ọ bụla. Nọnọdụ ụfọdụ, dị ka mgbe ị naegbu Giant Sequoias, enwere ike ijikọta sawblades site na njedebe ruo na njedebe iji mepụta ogologo saws.
Usoro nke iji mma ogwu mmadụ abụọ gụnyere onye naagba ọsọ guzo na njedebe ọ bụla. Ndị sawyers ga-agbanwerịta naadọta saị nime osisi. Ọ bụrụ na oghere ahụ amalite imechi, naeme ka mma owuwe ihe ubi ahụ naejikọta, a gaetinye wedges nazụ mma owuwe okwu iji mee ka oghere ahụ ghere oghe. Ịkpụpụ site n'okpuru osisi kwụ ọtọ, nke a naakpọ "underbucking", nwekwara ike iji ya mee ihe ma ọ bụrụ na ijikọ ghọrọ nnukwu nsogbu.
E ji ọtụtụ ọdịiche mee ihe na imewe ahụ, mana ha naadaba nụdị abụọ. A naeji ụgbụ a naegbutu osisi, a naejikwa ụgbụ naegbuke egbuke egbutu osisi ndị e gburu egbu nogologo osisi maka ebe a naawa osisi.[3] Ngwa abụọ ahụ chọrọ atụmatụ dịtụ iche: a naakpụ akpụ nwere mma dị warara, naenye ohere ka a naetinye wedges nụzọ dị mfe karị, ebe a naagbanye mma nwere mma sara mbara, na-eme ka ọ dịkwuo ike.
E mere mma ịsa ahụ mmadụ abụọ iji belata nakụkụ abụọ. Nhazi ezé dị mkpa iji kpochapụ ntụ noge a naebibi ya.
Ndị Rom oge ochie maara mma ịsa ahụ mmadụ abụọ, mana ọ ghọrọ ihe a naahụkarị na Europe netiti narị afọ nke iri na ise. Na America, a naeji ụgbụ a naegbutu egbutu netiti narị afọ nke iri na asaa, mana ụgbụ ndị naegwutu egbụrụ malitere iji dochie anya anyụike maka ịkpụ osisi na ngwụcha narị afọ nke 19.[2]
Mmadụ abụọ naeji ụfọdụ mma agha ndị Japan eme ihe, ọ bụ ezie na ha nwere nhazi dị iche.[4]
Hụkwa
[dezie | dezie ebe o si]- Olulu a hụrụ
- Whipsaw
Ihe odide
[dezie | dezie ebe o si]- ↑ Misery Whips Still Here, Thank Goodness | Montana Senior News (en-US). www.montanaseniornews.com (2019-04-01). Retrieved on 2023-02-22.
- ↑ 2.0 2.1 Johnson (2022-10-19). Two Person Saws: Crosscut or Two-Man Hand Saw Guide [2022] (en-US). Sawinery. Archived from the original on 2023-02-22. Retrieved on 2023-02-22.
- ↑ Miller. The Crosscut Saw – Mother Earth News (en-US). www.motherearthnews.com. Retrieved on 2023-02-22.
- ↑ Sawyers (2007-09-06). Japanese Handsaws (en). This Old House. Retrieved on 2023-02-22.