6th December 1906, Page 20
6th December 1906
Page 20

Page 20, 6th December 1906
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The Hitchon Gear.
By Dr. H. S. Hele-Shaw, F.R.S., M.Inst.C.E., The allusion which I made to the Hitchon gear in ni■ recent paper before the Society of Motor Omnibus Engineer.; seemed to excite......