SOLD: Edison model C Business Machine $450

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mjbarnes
Victor Jr
Posts: 15
Joined: Fri Jul 11, 2014 10:34 am

Re: SOLD: Edison model C Business Machine $450

Post by mjbarnes »

The business machines are beautiful in and of themselves. But being less usable, they are more of a static display. There certainly have been collectors of them and I have corresponded with some of them over the years, but I guess they have all the machines they desire. If you have a shaving machine and a supply of blanks, you could certainly use one of these to record . . . something or other.

JerryVan
Victor VI
Posts: 3529
Joined: Mon Aug 24, 2009 3:08 pm
Location: Southeast MI

Re: SOLD: Edison model C Business Machine $450

Post by JerryVan »

The easiest way to do it, if certain factors would allow, would be to make new drive gears for the existing Business machine feedscrew. Changing the gear ratio lets you retain the screw & ½ nut. As for mandrel RPMs, a larger drive pulley may be needed. The existing drive pulley is very small and it appears that there's lots of room to enlarge it.

pallophotophone
Victor I
Posts: 110
Joined: Tue Aug 14, 2018 7:35 pm
Location: Syracuse N.Y.

Re: SOLD: Edison model C Business Machine $450

Post by pallophotophone »

One other consideration , supporting keeping this machine original, is the electric motor it uses. Unless the magnetic pickup you plan to use is very well mumetal shielded, the AC field that the motor generates could find its way into the pickup windings. Heard along with the desired signal as a 60 cycle hum. A mumetal shield could be used on the motor, but it would be a very difficult experiment to determine what shape, size and location it would have to be installed on the motor to be effective

Obviously a spring driven machine would not have that problem.

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