Table Of Content

Fiowe 2-25. Exp'eded vow 2 awnemade rergy Cycle sed an small steep plots in France and Italy for hauting 2 plow up a slope, the plow then being dragged down again by hand. At the National College of Agricukural Engineering al Sisoe in Bediordshire, a recent develors ment Is the Snai, an engine-driven mobils winch which is driven along on twa wheels, paying out the cable. The wineh then stops land hauls in the eable and the process i repeated The pedal winch should be capable of tackling wmuct: Uae sam type Uf work, aru where manpower Is plentiful, ag inmost ess- developed counines, a two-man winen can be ised al ellher end of he plot. The pad- aiers could have a rest in the shade between spells of hard work! Harxtpushed plows, cultivators, and hoes are avallzble Which’ wauld be suitable for cable traction vill tla oF 49 conversion, 2416 Foot-oveiates amopnragn pump [ovelgped othe trnatone! Foe Beceaien neitute Pedal Drives for lrrigation Pumps In Bangladesh and other parts ofthe Third World # requirement existe for pumping water from < fiver to the fields. The fool- Powered pump developed by engineers at the Intemational Rice Flesearch Instiule in Ihe Philippines can Ii ge quantities of water several leet using only moderate amounts of labor. Ihe operator simply stands on two foo! rests al either end ot the pump and rocks tack and forth, Tha: effort compresses a claphragm which lorces water from the outlel valve, By eperating the pump in a sbythrle: manner, a continous How of valor 13 pumped. This le quite gn efficient unit Efficient as the bolows pump is, it 1 perhaps possible to propose a padaldnven imigation pump, particularly one that could leave water at Considerable heights. Further requirements would be: (2) low cost but Jong be with minimum maintenance, (b) use of local materials or standard beycle parts, 6) portabilty {the pump must not aniy accommodate to varying aver levels but be capable of being moved \ differeat sites 2s Foot rest f required and perhaps d smaniled and stored daring food times), (2) use of pedal power rather than manual operation, since Il Is two (0 tee times more eltectva, anc (6) if possible. @ two-man operation ‘rather than one, for inceased and smacther Cuthut 35 well as for social teasons. Flawe 2-18 Chineee “tityele” water pump i> [NiTGh vhosts abo servo ae tywbedts |? Figure 2-21 shows a prupused design of we very traditional elements In a new way. ‘The pedal units of a 3ype used in China tor hundrecs-ol years and stl in usa for avatlety cof purposes, including towsift pumping by means of a “square pallel chain pump." This {ype af pump is not attogether suitable for Gangladesh and similar areas beceuse at Pique 2-20 Close-up of Figuee 2-19 Figuee 219 Chinese woeden wale porn usodtor rang sea Waler mo si-avaperation beds Pastel Powec.an the | cre: Tho Thera Ward aa Bayne ‘Tne Flower Pump. MF 14-368, repos and bro. ‘hes, 194 ard later. avaiable tam Mov ‘Agricultura Woeksnap and Trring Scho! {MAWVTS). Aopur Seeton ¥2, Pama. Dacca-6, Bangladesh or Mernonte Cent! Commies, 11 Blook “A” Mohammedpur, aces, Bangladesh, ower Purp inataaion