Nwoke abụọ hụrụ
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.
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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- Olulu a hụrụ
- Whipsaw
Ihe odide
dezie- ↑ 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.