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Thread: Early Bridgeport Mill
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3rd Jan 2016, 12:40 AM #1Member
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- Oct 2010
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Early Bridgeport Mill
Hello all,
I found this image while searching for other things and thought it would be of interest to members here,
An early Bridgeport Mill at Packard Feb. 1941. I do like Bridgeports
cheers
Bill
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3rd Jan 2016, 11:05 AM #2
Looks a lot like mine. Although mine is an early '50s round ram.
Thanks for the piccy.
Findlay.
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3rd Jan 2016, 01:13 PM #3Banned
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It looks like a close copy of me Bemato..
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3rd Jan 2016, 01:28 PM #4Most Valued Member
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That's some christmas tree pulley and a nice fine adjustment tool in his hand.
Anyone know whats in the chuck? some sort of centre finder?
Stuart
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4th Jan 2016, 01:50 AM #5
Those small pulleys are mighty small aren't they Stu!
I bet that design was very floppy, that ram and clevis look like bad news. The later style is bad enough!1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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4th Jan 2016, 07:59 AM #6Most Valued Member
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They're fine within their limitations. I've had one for 20 years. Of course they have their limitations but the M head only has a 2MT taper (or a B&S taper of similar size). There's no back gearing so bottom speed is 275 rpm. OTOH top speed is 4000+ rpm IIRC so you can run small cutters at the correct speed.
I fitted a J head to mine to get slower speeds and powered downfeed for boring. Now, *this* is a bridge too far as you can now run much bigger cutters, and the lack of rigidity with deep depths of cut and big face mills becomes evident. I made my adaptor with a flat face as I couldn't remember the last time I nodded the head.
I'm going to put the M head back on mine and move the J head to the overarm of my Vicky mill. Or possibly on an extension snout on one of the HBMs. Kearns provided a factory accessory vertical head for the 'O' models and I quite fancy having one. I'll skip the nod ability again as I have other ways of doing this if I need to.
PDW
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