Starting mechanism for internal combustion motors — Harley-Davidson patent US1951637A (1934)
PatentUS1951637A
TypeUtility patent
Filed1931-05-09
Granted1934-03-20
InventorJohn R Thonger
SystemEngine
“March 20, 1934. J R THQNGER AL 1,951,637 STARTING MECHANISM FOR INTERNAL COMBUSTION MOTORS Filed May 9. 1931 2 Sheets-Sheet 1 ATTORNEYS March 20, 1934. J, THQNGER r AL 1,951,637 STARTING MECHANISM FOR INTERNAL COMBUSTION MOTORS Filed May 9. 1931 2 Sheets-Shet '2 (Mm/m ATTORNEYS Patented Mar. 20,…”
Drawings (2 sheets)


Parts for this system
32-0064
Magneto to Crankcase Oil Seal Ring and Gasket Kit
$6.3514-0555
Rear Caliper Piston O-Ring
$10.6415-1380
Rear Master Cylinder Gasket Kit
$10.6423-0825
Handlebar Master Cylinder Piston Cup
$10.64Check fitment first — add your bike and we flag what fits.
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Drawing from the US patent record (via Google Patents). A patent shows the invention as filed, not necessarily the production part on your motorcycle — confirm fitment for your model and year. Independent aftermarket retailer, not affiliated with Harley-Davidson, Inc.