Title: Sewing machine lubrication system and pump therefor

Abstract: A shaft driven overedge sewing machine is lubricated by a pump mounted on a driven shaft which supplies lubricating oil from the machine's sump through an oil passage in the pump mounting shaft. The pump body is mounted for free rotation relative to the shaft and normally retained against rotation, upon rotation of the shaft, and a spring pressed plunger carried by the pump body cooperates with an eccentric cam surface on the shaft to pump oil from the machine sump into the oil passage in the driven shaft to lubricate shaft bearings and the like.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Kelly, Edward A. (Wethersfield, CT, US)

Application Number: 537626
Filing Date: 1974-12-30
Publication_date: 1976-09-21
Assignee:
Primary Class(es): 112/256 184/6.15, 415/90
Other Classes:
US Patent Ref:

2351431	Jun, 1944	Irons	415/90.
2879733	Mar, 1959	Pierce	112/256.
3272164	Sep, 1966	Keller	112/256.
3883262	May, 1975	Schmedtkord et al.	112/256.

Other Refs: 402,961691,663

Mar, 1943	IT
May, 1953	UK

Primary Examiner: Krizmanich, George H.
Assistant Examiner:
Attorney: Beveridge, DeGrandi, Kline & Lunsford