DougB442
Well-known member
A local Craigslist add came up recently, and I have no need for another jack, so I figured I'd post it here for informational purposes and discussion.
a little gathered history:
… in 1929 you could purchase a Manley 25 ton hydraulic
press for $115.00 or a 2 1/2 ton hydraulic jack for $48.00.
Both products were invented by Robert E. Manley then
operating the Manley Manufacturing Company of
Bridgeport, Connecticut.
… in 1931 the Eastern Valve Company of Hanover,
Pennsylvania was purchased by Robert E. Manley, moved
to York, Pennsylvania and renamed the Manley Products
Corporation. (Who still make engine valves)
http://longisland.craigslist.org/tls/1879854145.html
Here is the Original pantent Documents. Since the hydraulic resevoir cover says "Patent applied for" I'll assume that it is a '31 -'34 model year since Manley moved to York, PA in 1931, and the patent was granted in '34.
The interesting thing about this jack is the "screw" height adjustment on the saddle, similar to a bottle jack.
http://www.google.com/patents?id=N0BNAAAAEBAJ&printsec=abstract&zoom=4&source=gbs_overview_r&cad=0#v=onepage&q&f=false
a little gathered history:
… in 1929 you could purchase a Manley 25 ton hydraulic
press for $115.00 or a 2 1/2 ton hydraulic jack for $48.00.
Both products were invented by Robert E. Manley then
operating the Manley Manufacturing Company of
Bridgeport, Connecticut.
… in 1931 the Eastern Valve Company of Hanover,
Pennsylvania was purchased by Robert E. Manley, moved
to York, Pennsylvania and renamed the Manley Products
Corporation. (Who still make engine valves)
http://longisland.craigslist.org/tls/1879854145.html
Here is the Original pantent Documents. Since the hydraulic resevoir cover says "Patent applied for" I'll assume that it is a '31 -'34 model year since Manley moved to York, PA in 1931, and the patent was granted in '34.
The interesting thing about this jack is the "screw" height adjustment on the saddle, similar to a bottle jack.
http://www.google.com/patents?id=N0BNAAAAEBAJ&printsec=abstract&zoom=4&source=gbs_overview_r&cad=0#v=onepage&q&f=false
Last edited:

I think others are right that mine is older. I'll get the photos I just took up in a minute. Mine is more primitive-looking but just as heavy-duty.

