Bob1 Posted 19 hours ago Posted 19 hours ago This is a 1920's phonograph from Chicago. It plays 78 rpm discs. My wife's grandmother received it as a wedding gift. First 3 photos are overview. There is one thing wrong now. The player used to play normally. Now, it looks like the weight of the reproducer is dragging the record to a stop. I have a few questions to post to the forum (apologies in advance for things that are obvious to APS regulars): 1. When the player is used, is the needle supposed to be perpendicular to the disc? I have been rotating the needle slightly. See 4th photo, this is angle of needle. 2. Is the tone arm and reproducer arm supposed to be balanced to let the needle ride gently on the disc? Now, my reproducer arm flops down with no resistance. I think the set screw has worn through the metal of the reproducer arm. See photos 5, 6, 7, 8. The groove where the set screw tightens to the reproducer arm has lost all of its metal. I don't think the groove should cut all the way through. If a solution is recognized, please advise. The video shows the player rolling to a halt. This is the problem. I have a piece of tape on the swivel to help alleviate the problem. 3. Does anyone remember seeing this reproducer arm for sale on any of the "for sale" parts sites? Thanks. Bob L. Metairie, LA USA 09 rolling to a stop.mp4
Jerry Posted 19 hours ago Posted 19 hours ago (edited) 12 minutes ago, Bob1 said: 1. When the player is used, is the needle supposed to be perpendicular to the disc? I have been rotating the needle slightly. See 4th photo, this is angle of needle. 2. Is the tone arm and reproducer arm supposed to be balanced to let the needle ride gently on the disc? Now, my reproducer arm flops down with no resistance. 1. The angle in your 4th photo looks about right. 2. There is supposed to be no resistance/balance within the tone arm. The full weight of the reproducer rides on the record. What you have appears to be correct. Either you're not winding it far enough, or there is an issue with the motor. Possibly weak springs or old, dried-up oil. It could also have to do with the record you're playing which is not really suitable for a phonograph of that era. The compsition of those later discs is not as hard as the shellac discs produced in the 1920's and earlier. This causes drag when played on an early phonograph. Are you using a new needle? Worn needles, (i.e. used more than once), will laso create excessive drag, record wear, and terrible sounds. Edited 18 hours ago by Jerry
phonogfp Posted 15 hours ago Posted 15 hours ago Jerry has offered excellent advice. In addition, I suspect that tone arm is not original to the machine. A good way to evaluate if the tone arm is appropriate for the machine is to see if the needle either can touch the turntable spindle, or at least come close. This tone arm looks too short, and very much resembles components used in portable phonographs of the 1930s/40s. If your tone arm does not touch the turntable spindle, report back and we can recommend a parts supplier who can likely help you. Finally, here's one of the free articles on the APS website which you may find helpful: https://www.antiquephono.org/#/collectiondetails/16 George P.
Henry Posted 14 hours ago Posted 14 hours ago To echo Jerry's point, it looks to me as though that Mercury disc is one of the later vinyl 78s, in which case it is totally unsuited to the machine you have, and the disc will be ruined if you play it with that heavy acoustic sound box and steel needle, as pictured. Does your machine display the same symptoms you describe when playing a shellac 78? If so, then I second Jerry's advice about cleaning and lubing the machinery. There are folks who do this servicing professionally, and members here can recommend them, if you have a need. BTW, I lived in New Orleans during my junior high school years, 1953-56, so I know where you are, Bob1. McMain Junior High School, Class of '56. Ah, the memories!
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