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Fully restored Robinson mortiser

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Fully restored Robinson mortiser

Edited #1

Maurice

Finished. Pictures to follow.
Been far to busy to post until now but here she is. So a brief report followed by summary.
No major repairs required, just a slightly bent shaft for the main table adjustment. Easily fixed on a hydraulic press using v blocks and a dial indicator. Original bearings are tight and fine. 
The entire machine was stripped down to bare metal and inspected before priming and respray. Original magnetic and isolation switches restored but bypassed. Power is now supplied via VFD mounted where old light was mounted on top left using Original bolt holes. Original on off switch below depth stop may be reinstated later if suitable replacement can be found. 
Any bright metal surfaces were wire brushed just enough to remove old paint but retain original patina. Natural tannins from timber have left a gun metal/ oxide finish on many surfaces that inhibits rust. 
Two coats primer. Four coats of semi gloss oil base paint. 
Difficult surfaces to reach were sand blasted back to bare metal while retaining original fairing bog as far as possible.
Some parts needed heat to loosen rust. Nothing badly seized though. 
Sharpening station fully restored. Will need new drive belt. Chisel Sharpening grinding Stone needs dressing with diamond dresser.
Chain and bar on order. Will need new backing plate. Original one lost.

Fully reassembled the tensioning system for the springs brings the head in to perfect compensated balance via a cam lobe on the pinion. This reduces the tension as the head is brought lower because of reduced leverage. Simple and effective. 

All the dovetailed ways are smooth and tight with no signs of wear at the extremities. The table floats easily and adjustment is smooth and light. The machine is a joy to use. Plenty of power and surprisingly quiet despite the bevel gear drive. The reason being they are helical rather than square cut. 
The operating lever axle runs in a pair of bronze plain bearings. Very slight wear. Regreassed with a generous squirt of graphite powder this was enough to eliminate the very slight play. 
The VFD reduces the arbor speed nicely for larger chisels. Nice smooth start up. 
Works well. 
Can't wait to see how she goes with a chain and bar. 
Final thoughts. Best deal I've ever got and the Queen of the shop. Robinson makes Wadkins look rather pedestrian by comparison and I'm a huge fan of Wadkin. 
You can tell this machine was designed by woodworker's rather than just engineers.
Its functionality and beauty is unique to Robinson machines. It's a real lady. A sculptural elegant graceful work of art. 
It got the full treatment because it deserves no less.

Added later 09 min 18 s:

God I hate computers. Can't even figure out how to post pics without buggering it up.

Added later 28 min 17 s:

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Re: Fully restored Robinson mortiser

#2

So nice to know that IRS depreciation doesn't destroy old machines. It's not a John Deere?? Unfortunately, and sympathetic with your frustrations, detail and self-explanation are lost in the small scale. I have seen only modern mortisers. Do you stand within the "mandrel" space of the wheel?

Re: Fully restored Robinson mortiser

#3

Maurice

Depreciation doesn't apply to machines of this quality. Unappreciated for quite a while yes. But the hammerite paint did a good job of preserving the machine in near perfect condition. I couldnt get those images to post full size.  
The machine is operated standing at the wheel . Manual feed with a solid steel 3/4" bar knurled and rounded at the end.20241104-193628.jpg

Re: Fully restored Robinson mortiser

#5

Maurice

I'll try again now I've figured out how to pick a size that works. 20241104-193556.jpg
Okay, that's 21 inch monitor. Any better ?

Re: Fully restored Robinson mortiser

#6

Nice job on a nice machine.  I would agree with you , I have a few old Robinson and Wadkin machines, I do like the Robinsons. The 30" bandsaw is a thing of beauty. 
I recently rebuilt a Robinson ET/E table saw.  I would love to  own one of the mortise machines.

Re: Fully restored Robinson mortiser

Edited #7

Maurice

You can't really go wrong with any of the big classic machinery names. 
The Robinson cadet bandsaw with the fully cast upper frame is, like the Wadkin BZB, super smooth and quiet. Very precise cutting as a result. 
I have the 30" BZB and it's a joy to use. My only regret is that it doesn't have the larger 5hp motor but most of the time 3hp is
 plenty. Direct drive so less power loss from friction and belt slip. 
The mortiser is superbly engineered. Definitely worth looking out for one.
It's biased towards chain obviously but the chisel attachment works fine. 
Chains are making a well deserved comeback with the resurgence of traditional timber framing. 
A good example of this machine will fetch 10 k down under. The big advantage with this design is it can handle the heavy timbers that would choke an Italian job. 
Also the table is set much lower so it's much more stable. 
It's built like the proverbial brick shit house. 
On balance I'd say it's a slightly better machine than its Wadkin equivalent.

Added later 15 h 02 min 48 s:

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