Table Of ContentBy NJ. van de Ven”
ae eierenpure
Te Loot valve 933 “ae piston
mae wnEUTT
Constructing she tover
whe Coundacton, the crection of cae tower and
Le aliunen®
firake wouaceuetion and 25125)
The sas) frome, the rokar cuprox™
Aasenbly of the hesd sonstenotion ard the rotor
Manneiag tae Foto
Pintsnang see taatcny the mil
sopeeTON
‘The Resigns dencvsbad here, for a wosd-work Lathe, @ platon-pump and a
Slow punning (aailwing) wiiiil* bave an intermediate technological
that 1a 29 sey our aim hax pou Us mike cusigns wich can be entirely
Guustueiad trom mrerinls which abe available everywhere, 2.9. 10a"
rugged sav wool aie! piping.
Eounmctions have bara mde yeioy noud strewn isoaeties telephone pole
bolts! ond pivees of thmwaled say fecumurcially obtainable in Lengths
of Toms My MIO etc.)
fen (hese maccrials are not watlable, use cap bi aide of mortise jeinks,
pocsimly in coubinaticn with glued and rope-tied Joinra.
Sowover, the Latter tyov makes iigher Genands on bets Live toola evailabte
and the skill of tie constructors.
Ne only uned aatual tools (e.g. chisels, hantsawe, iarddcilia, Manmers
ete.) Le assemble the arotatynes of the’ nvipment.
tte Rave tried te descrine our experience a2 equipment Dui:ders aa clear
Uy and systenatirally se panible
be TIRE WooD~A0RK “ATE
Since che placon-pinp ameds cicouley parts (valve and piston body) wo
Gesided ta mild a Lathe for word-vork. The Lathe is aie Frum zogh
Wood left over Frow previoss neujects, saénly, Connections are mide with
Screws, nafla, lengtha af threaged bare and bicylre pares. The lathe 12
easy to-ase and a9 trend by foot treadle,
tt, Aasombty
igure 1.1, shows the acceubly of the Lathe, Te Erase condteca of two
palalleL seaae onieh toca the support for tie tool rest ans the tall=
Steen, both of which can be fixed Lo the hor zoutal beags with wooden
clamps.
The headstock consiate of to Upright pieces of Uiaber, ont uf which acts
aa post
Montichead, sawn from a bicycle frame, 4a clanpnd into a qraave in tho
todo oF tne noadaLock using a loop of wire or « Lravket of mital Strip,
Gh fering » revolving headstock epintin~
ho the Lege of the fork hive neem teen eff ene pall-bead, a large clr=
Guar dior con be screwed onto ihe sap of the tock (23g. 2.2.)
Ghis dice is Cenesed on the centre pois this is a piece Of pips thal
Fils inca te centre tite sf the fork and can be fastened there,
Testy are filed in the projecting end
The wooden aise should preferably conalst of plywood or a simlar eype
Of Layered ond. This can be pate by laying several planks across each
Sthers neiling or giueiny then toxetner and thea sawiay cut the Gisc.
Min of te diac ie twofold: vo fin the objece to be turned, AF this is
oe turned betwen te cunizen {aint shaped Gujects) and 20 ath se 9
Fiyermeet-
Since the lathe ip driven by a pedal-ceank wechanion, the diss 12 ca-
Sentiol sal shold be as large as possible.
The screnbly of Ube tool rest and the tallecock wlth thelr locking de-
‘eee aay be seen froa the drawings.
1.2, ‘Teagan sacion
a ioycle whee! Fixei tia a crank ix driven by means of n binyste foot
Pedal placed on she Long asst of the frame, The urive dz transmitted
by a Flat belt (Cot Crem the profiles mur Cacc af « bicyere tie! to a
weoiien Bie that 18 coupled to Une spindin. A frawmineion entia cf
Ti dbay proved co be the most satialactocy
Iv ug advisable that the wenine pulley naz a spherical shape to peevent
he elt froa slipping off it
There are several ways oF attaching > ncank to the bicycle wheel. a
fig. 2.1, six bas bese done by clmaping "#0 pieces of timber in vue Lis
between ine ziu and on either gidy oF sno hub, These two places of wood
Fig 12
Fig. 13
The handle should be abous 6 ex long, But experimenca can be carcied out
Calup ores owe fudgment
1.
+ “opaeaning the Latne
We cistingsinh Between bws kinds OF pieces to be turned: loot thin one
aed qiac-anaped ones. he former are fixed batween the fly-wheel and tho
tailerock, 2 de advisable eo aake a contre pointe, in te form of @ mani]
conteal hele of a fev millimetres deep, at the end ef the workpiece be~
Thus may be dane asus a nal pudcs or Giniler instrumanc. The pointed
hendle of a t1le ze soother alternative.
Then the front of she workpicce 1s placed against use serrated drivin
fire point and hannered into st With severe] firm ommer blows ageinst
Fhe fear end,
‘The taristock 42 then screved on an fixed with slight pressure against
the woreniece, & disc-shaped worepiece 1s centred az accurately am pos
siblg on the sarge wooden £-y-wocl ant then flimly sceewee to ite
tre Sool vast is placed as near as posvible ts the surface to be tured
uo Lnat the enter Denrg ag EAE Ag POsSKELe on the tool cent and DOE oF
Binge the lathe operator ctands sn one Leg co wperate the lathe, ne moet
algo be asia co lean oz the teri rest and till be able Lo hawile che
eatear coevectty fg, 110)
Fig. 14
4 houtdrsabane
o lounspaan en de ose kop
suppor, bed and cxntrhead
