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Tefisat Yedey Adam: Difference between revisions
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→Kocho and Grama
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#A pump powered by wind or water to pump water into a mikveh isn't tefisat yad adam after the first gush of water.<ref>Chazon Ish Mikvaot Tinyana 3:17 writes that the water comes with koach rishon is considered coming because of a person, but water that comes with koach sheni (water that wouldn't come if the pump was opened and closed immediately) is grama. Ben Ish Chai (Hod Yosef 71) quotes Dvar Moshe 24 who writes that koach kocho is not an issue for tefisat yad adam. His proof is from a person riding an animal isn't tefisat yad adam (Tosefta 3:3). The reason is that the water moving is koach kocho of the rider. Maharam Shik 196 brings the same proof. However, Ben Ish Chai rejects the proof because animals walk on their own, so the animal moving isn't because of a person. </ref> | #A pump powered by wind or water to pump water into a mikveh isn't tefisat yad adam after the first gush of water.<ref>Chazon Ish Mikvaot Tinyana 3:17 writes that the water comes with koach rishon is considered coming because of a person, but water that comes with koach sheni (water that wouldn't come if the pump was opened and closed immediately) is grama. Ben Ish Chai (Hod Yosef 71) quotes Dvar Moshe 24 who writes that koach kocho is not an issue for tefisat yad adam. His proof is from a person riding an animal isn't tefisat yad adam (Tosefta 3:3). The reason is that the water moving is koach kocho of the rider. Maharam Shik 196 brings the same proof. However, Ben Ish Chai rejects the proof because animals walk on their own, so the animal moving isn't because of a person. </ref> | ||
#Melting ice with hot metal boards isn’t an issue of tefisat yadey adam since it is grama.<ref>Maharsham 1:200 writes that melting ice with hot metal boards isn’t tefisat yadey adam since it is a grama. Chatom Sofer 1:200, Maharam Shik 196, and Nachal Eshkol 53 agree.</ref> | #Melting ice with hot metal boards isn’t an issue of tefisat yadey adam since it is grama.<ref>Maharsham 1:200 writes that melting ice with hot metal boards isn’t tefisat yadey adam since it is a grama. Chatom Sofer 1:200, Maharam Shik 196, and Nachal Eshkol 53 agree.</ref> | ||
#If the water was drawn into a mikveh using an indirect or delayed reaction according to some poskim it is valid as it wasn’t drawn by a person directly.<ref>See discussion of pump above. Rabbi Akiva Eiger in Drush Vchidush cited by Lechem Vsimla 201:145 and Divrei Yosef p. 147 held that grama doesn’t make tefisat yadey adam. Maharit 17 also writes that anything which is pushed only with a koach sheni it is considered a grama and not an issue of tefisat yadey adam. Therefore, he writes that water that was drawn from a river into a mikveh using a water mill with buckets that had holes in them is kosher. Zichron Yosef 13 also writes that koach kocho doesn’t create tefisat yadey adam. Ben Ish Chai in Hod Yosef 71 writes that koach | #If the water was drawn into a mikveh using an indirect or delayed reaction according to some poskim it is valid as it wasn’t drawn by a person directly.<ref>See discussion of pump above. Rabbi Akiva Eiger in Drush Vchidush cited by Lechem Vsimla 201:145 and Divrei Yosef p. 147 held that grama doesn’t make tefisat yadey adam. Maharit 17 also writes that anything which is pushed only with a koach sheni it is considered a grama and not an issue of tefisat yadey adam. Therefore, he writes that water that was drawn from a river into a mikveh using a water mill with buckets that had holes in them is kosher. Zichron Yosef 13 also writes that koach kocho doesn’t create tefisat yadey adam. Ben Ish Chai in Hod Yosef 71 writes that koach kocho is a discussion by shechita and to avoid the opinion of the Tevuot Shor if it is a koach koach kocho it isn’t considered tefisat yadey adam. Divrei Yosef p. 148 supports this approach by saying that as long as the water isn’t naturally drawn into the mikveh it is invalid.</ref> | ||
==Ice Machine== | ==Ice Machine== | ||
