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MMD
Pictures
qrs1975
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by Hal Davis Date: Mon, 07 Dec 1998 03:45:53 -0800
Here are some pictures that I took during a trip to QRS in July 1975. There are pictures of the entrance, pictures of production perforators, pictures of the stock of rolls and materials, pictures of the marking mechanism on the real-time recording grand piano, and pictures of the stop-time recording piano that Jean Cook recorded so many rolls on. I've forgotten the name of the man that was demonstrating it. Finally, a candid shot in the reception room (read 'break room'). The real-time recording piano was a grand; I forgot the make, but the recording is done by means of the stack shown in the photographs. The QRS recording piano does not use pencils to mark the paper. The recording is actually done using a stylus to push on traveling carbon paper, which is then pressed against the recording paper to mark where the perforations belong. The pneumatics bore down to make carbon marks on the paper roll as the piano was being hand played. The roll so marked was then punched by hand to make the master roll. I have watched this piano in operation, and by using the carbon paper satisfactory results are obtained. The stop-time recording piano is the one used for so many years by Jean Lawrence Cook. This piano is operated by pressing the appropriate piano keys which are then held by controllers along the back of the keys and the punch is tripped to make the perforations directly in the roll. JLC was able to do this fast enough to almost equal the making of a roll on the real-time piano, when the hand punching of the carbon marks was taken into account. Hope these pictures are of interest. They charged me twenty-four dollars to make these prints from the color 35 mm slides that I had taken the pictures with originally. A friend in Las Vegas told me that he just got a new scanner that has the capability to copy slides so I think I'll be looking for one of them next. Hal Davis
14 May 1999 |
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