I guess from the action diagram that the wipp had a piece of aluminum as its "structural" basis, that served as the check and spoon as well, with a separate protrusion of aluminum serving as bridle. It seems to have had plastic molded to it in the place where it attached to the flange (that snapped into a slot in the rail), and a piece of plastic that served as the heel and to attach the jack. Looks like the damper lever was also probably aluminum. The hammer butt and catcher, as well as its snap in flange, were plastic, with wooden shank and hammer molding. The keys also rode on a sort of flange that snapped into the balance rail.
So is this one instrument with three names, Thomas, Lindner and Rippen? Or were there competing designs?
I'll take my manual to the university next time I'm there and scan it, and then post it when I get a chance. (Easy and fast to scan on the copy machine, but what I have is two sided and folded, so putting it back together in a file that makes sense will take some time).
-------------------------------------------
Fred Sturm
University of New Mexico
fssturm@unm.edu http://fredsturm.net "The true sign of intelligence is not knowledge, but imagination." - Einstein
-------------------------------------------
Original Message:
Sent: 02-16-2013 17:53
From: John Ross
Subject: History of Action Plastics?
Sounds like it was a stencil piano made by Lindner. The wippen/whippen was just a stamped out piece of aluminum, bent to work. The action tape was a piece of cord with a dab of hot melt glue holding it in place.
Some innovative ideas, but unfortunately, Mickey Mouse manufacturing, with apologies to Mickey.
-------------------------------------------
John M. Ross
Ross Piano Service
Windsor, Nova Scotia, Canada
jrpiano@bellaliant.net
-------------------------------------------
Original Message:
Sent: 02-16-2013 17:46
From: Larry Messerly
Subject: History of Action Plastics?
Fred,
I had a Thomas piano for awhile. Part of the reason I took it on as a project was that my first mentor, Jim Jeffers, RTT, was involved in the production in the Republic of North Ireland. In your manual, if it shows two men lifting the piano, one of them is Jim.
It had a sweet tone and the keyboard was hinged so that it could fit inside the knee board for shipping.
Very creative methods of adjusting lost motion, key dip, key height etc. Thomas was creative.
-------------------------------------------
Larry Messerly, RPT
Bringing Harmony to Homes
www.prescottpiano.com
larry@prescottpiano.com
928-445-3888
-------------------------------------------
Original Message:
Sent: 02-16-2013 17:36
From: Fred Sturm
Subject: History of Action Plastics?
There was an American piano with an all-plastic action, Thomas by name, "Manufactured by Thomas Organ Co., division of Warwick Electronics, Sepulveda, California." I have a bad quality xerox of a manual describing it and giving instructions for maintenance (the words are clear, but most of the illustrations, the photos, are pretty worthless for any detail at all). Sounds very much like the Lindner: light weight (under 300 lbs), plastic keys that (it describes) don't ride on a pin, but on a "small steel spring." Everything is screw adjusted (key height and dip), frames all aluminum. Reverse crown soundboard, soundboard and pinblock "impregnated" with epoxy. It looks like (in one of the bad photos) the key bed can hinge down. Lots and lots of details of how this was a revolutionary design (including a reverse thread tuning pin - not sure why they thought that was a good thing). I believe the plastic was the same as the kind that became brittle, and they disintegrated, from stories I have heard. I never saw one.
-------------------------------------------
Fred Sturm
University of New Mexico
fssturm@unm.edu
http://fredsturm.net
"The true sign of intelligence is not knowledge, but imagination." - Einstein
-------------------------------------------
Original Message:
Sent: 02-15-2013 05:49
From: Michael Gamble
Subject: History of Action Plastics?
There are few instances of the use of plastics in the UK but one piano manufacturer immediately springs to mind - and that one, most interestingly, is Irish. This company named Lindner manufactured both Grand and Upright pianos with totally unconventional designs. Though I have only come across one example of their baby Grand I was intimately involved with one of their small Uprights - as owner. This piano I had condemned with good reason since the keys were falling out. But what was really interesting was the Company's new approach to old conventional designs. For a start the metal frame was pre-constructed from lengths of iron welded to shape - like farm machinery. Then the keyboard was totally new in concept - the keys were made of hollow plastic with many adjustment and insertion points. For example the 'touch' was adjusted by a plastic screw right through the end of the key. The key frame was made from channelled extruded alloy . The balance rail was particularly interesting since there were two channels - one for the Sharps and the other for the Naturals for fixing points. Clock spring was used as the pivotal point in each key and each end of a length of clock spring was inserted into a plastic connector - both connectors were different. The one which was inserted into the key was round, split at both ends - one to take the spring, and had 'tines'' to lock it in place in the hole in the underside of the key. The other connector was more interesting and looked as though it had been cut off from a length of extruded plastic in the form of a capital 'R'. This was pushed into the appropriate channel of the balance rail. This form of fixing was common to all action parts for the main action rail was also of extruded alloy with channels for: Damper 'R' flange, Hammer Butt flange and Lever flange. Note - these flanges were simply pushed into place and could be slid side-ways - both action parts and keys - for lining up purposes. The action parts were of alloy - the Lever being bifurcated to take the 'tape' - which wasn't tape but woven nylon cord terminating in a 'cap' to be pushed on to its bifurcated part of the Lever. The other bifurcation took the check block. I think you have another name for Lever in the US. The other interesting point is - there were no scres in the action at all. The action was captivated in place by spring clips at each end. Another interesting aspect was that by removing the two pedal rods and two bolts the whole keyboard could be hinged down - rather like a 'ships' piano. When I condemned this Lindner it belonged to a friend who was Head of Music at a Prep School. The tonal quality of the piano was exceptional but the piano was let down by disintegrating keys and action parts. Being a very small piano I was able to put it in the back of my Estate car and take it home. I had a new keyboard made by Fletcher & Newman and the piano was back in business. However the action problems wouldn't go away so easily and I sold it for a profit to a dealer. Another interesting afterthought about this Irish Company was that when in the 60's (I think) they went into liquidation or sank in the bog - or whatever they do in Ireland - they paid off their workforce in Pianos...... (and, of course, it could be true!) I just wish I had some photos of it! The concept would astound you. Michael (UK)
-------------------------------------------
Michael Gamble
semi retired
Brighton
01273813612
-------------------------------------------
Original Message:
Sent: 02-14-2013 19:52
From: Ian Gillis
Subject: History of Action Plastics?
Was called to look at a Heintzman Elgin today, which contains plastic jacks and backchecks. These pieces are all crumbling with age, and would need to be replaced to make the instrument playable again (whether this should, and actually will happen, with the associated costs, is another question...)
At any rate, I checked the date on the instrument; the serial number corresponds to a production date of 1949. I thought there might be a mistake, that plastics in piano actions would not have appeared that early. But after a quick search of past threads on this site, I found a few other references to instruments of similar vintages with plastic action parts.
This makes me wonder, when were plastics first introduced into piano actions, and by whom? What sort of plastics (Bakelite? Nylon?) were initially used, and what makes today's plastics so much better than the early materials, which are now succumbing to the ravages of time?
-------------------------------------------
Ian Gillis
Chester Basin NS
-------------------------------------------