Circuit-breaker — Harley-Davidson patent US1240442A (1917)
PatentUS1240442A
TypeUtility patent
Filed1914-05-18
Granted1917-09-18
InventorWilliam S Harley
SystemElectrical & ignition
“WY 8. HARLEY. CIRCUIT BREAKER. APPLICATION FILED MAY 18, 1914. Patented Sept. 18, 1917. , UNITED STATES PATENT OFFICE. WILLIAM S. HARLEY, OF MILWAUKEE, WISCONSIN, ASSIGNOR T0 HARLEY-DAVIDSON MOTOR 00., OF MILWAUKEE, WISCONSIN. it CIRCUIT-BREAKER. Specification of Letters Patent. Application filed…”
Drawings (1 sheet)

Parts for this system
32-3124
Ultima Output Starter Shaft Spring
$4.1917-5873
Ultima Starter Gear Spacer
$4.1917-0601
Kick Starter Arm Bolt Kit
$6.3232-0404
Plain Rocker Style Handlebar Switch
$6.32Check 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.