Prototypes

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Buckle Bow made by  Gerard J Scholten  of Lon & Bruegel The Netherlands
Oval -shaped buckle spring has widened ends which fit into notches in the riser
and limb base to form a knife edge bearing. Limb synchronizing wheel and crossed cabin system is shown on the bow
Len Subber 
ZipBo 1974

Original Zip-Bo by Len Subber  Prototype one limb bow (never produced)
made in1970's
  Tom Dorigatti & Jim Sweeey Compound  (1973)
(photos by Tom Dorigatti)