Agricultural  Motor  attached  to  Mower. 
201 
In  Article  3927,  one  of  these  engines  is  mounted  as  a motor 
tractor  upon  two  driving  wheels  and  a narrow  frame  extending 
to  the  rear.  The  rear  end  of  the  frame  may  he  supported  either 
by  a third  wheel  or  it  may  be  rigidly  attached  to  the  pole  of  a 
mower  or  self-binding  reaper,  or  to  a two  wheeled  lorry  body. 
The  eno'ine  drives  the  two  wheels  through  the  intermediary  of 
a gear  box  giving  three  speeds  and  a reverse,  the  second  shaft 
of  the  gear  being  coupled  at  either  end  by  universally  jointed 
shafts  to  the  wheels.  There  is  no  differential  motion.  The  wheels 
Fig.  12.— .\gricultural  Motor  attached  to  Mower  (Article  3927). 
are  mounted  on  L-.shajied  axles  and  are  coupled  together  for 
steering  on  the  Ackerman  principle.  The  whole  arrangement 
at  present  is  very  crude,  but  it  is  evidently  capable  of  develop- 
ment, and  the  Judges  recommended  that  it  should  he  allowed 
to  he  again  entered  as  a “New  Implement”  next  year. 
Article  4000. — Diplock's  Patent  Jraction  Engine  Haulage 
Syndicate,  Ltd.,  61  Marsham  Street,  Westminster,  S.W. 
“Pedrail  Steam  Tractor,  manufactured  by  Messrs.  Wm.  Foster 
k Co.,  Ltd.,  of  Lincoln.  Single  Cylinder  Engine,  cylinder 
6 in.,  diameter,  9 in.  stroke ; hind  portion  of  engine  mounted 
upon  Diplock’s  patent  pedrails,  complete  with  winding  drum, 
brake  on  both  pedrails,  compensation  gear,  usual  tender,  coal 
bunker,  &c.  Working  pressure  of  boiler  160  jier  sipiare  inch.” 
Price  1,400/.  This  most  ingenious  machine  (Fig.  13),  teem- 
ing with  interest  to  the  mechanical  engineer,  and  no  less  so  to 
the  student  of  anatomy,  was  undoubtedly  one  of  the  greatest 
attractions  of  the  Show.  It  is  an  example  of  the  successful 
application  of  the  principles  of  nature  to  mechanical  traction. 
