These glued stacks may be recognised by the lack of screws on front of the pneumatic board and are not recommended for inexperienced restorers. Originally each of three pneumatic boards (housing the valve assemblies) were glued to the vacuum chest and while this made for an extremely airtight stack, it was and is equally difficult to separate and repair. If there were awards for efficiency, the Gulbransen would win hands down. With a well restored Gulbransen player, you may literally feel each note play through your feet on the treadles. The player system utilizes very small channels in the pneumatic board to minimise the suction required to run the player pneumatics, this allows a minimal pedalling requirement to achieve full sounding music. G ulbransen pianos were well built and high quality despite being produced en mass. The Gulbransen 'Registering Piano' and trademarked 'Easy to Play' baby logo, was one of the best known brands of it's time and one of the best known trademarks in the world. Established by the innovative Axel Gulbransen in 1904, by the late teens Gulbransen was the largest player piano manufacturer in the world. mass produced player pianos in Chicago Illinois. Arguably the most successful, certainly the most prolific manufacturer of player pianos in history, the Gulbransen Co.
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