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Two types, three-tier and four-tier. The oldest model is four-tier having individual screw-on pneumatic-valve units. The older type has a rather unique type of air motor to distinguish it; it employs metal pistons and distributor valves instead of the conventional wooden construction with bellows cloth.

The later models: Mostly glued-together stacks, which are now tricky to rebuild, but certainly averted the problem of leaky gasket joints when new. One method of rebuilding them now is to saw the three tiers apart by ripping the upright board up to the pneumatic hinge, leaving the section of the chest attached, later bolting this back together with a gasket the width of the saw cut. On some of the later models, three rows of individual pneumatic-valve units were screwed on with gaskets, as in all of the early four-tier models. All three tier models a can be identified by the unusual pneumatic motor.

More information about rebuilding the Gulbransen is found at the following links:

Gulbransen Air Motor Rebuilding

Gulbransen 3-Tier Stack Rebuilding

Gulbransen Upper Section
Gulbransen 'Screwed Stack'
From 'Player Piano Servicing & Rebuilding' by Arthur Reblitz. Used with permission.

Rows of screws on the front of the stack identify the Gulbransen with the 'Screwed' stack. If the screws aren't there, the stack is the 'Glued' type.

For the Service Manual or Technical Reprint - CLICK HERE!

Gulbransen Serial Numbers
Gulbransen Serial NUmbers

Return To 'Piano Makers' Listing - Click Here!

Since "Player-Care" is an internet business, I prefer that we correspond via E-Mail (click here to fill out the 'Request Form'). However, if I'm not in the middle of some other activity, you can reach me at 732-840-8787. But please understand that during the hours from 8AM-5PM EST (Mon-Sat), I'm generally quite busy. So, I probably won't answer the phone. If you get the answering machine, please leave a detailed message stating the reason for your call. Also, repeat your name and phone number clearly and distinctly. By necessity, I prioritize everything in my life. And, if you call and just leave your name and number, and ask me to call you back, it might be a day or two before I return your call. Why? Because I don't know why you want me to call and I might not be prepared to assist you in an effective and efficient manner. If you leave me an E-Mail address (which I prefer), spell it out phonetically. The more you do to help me, the more I can help you in return. Don't rush. You have four minutes to record your message.

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407 19th Ave, Brick, NJ, 08724
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