Mechanical Music Digest  Archives
You Are Not Logged In Login/Get New Account
Please Log In. Accounts are free!
Logged In users are granted additional features including a more current version of the Archives and a simplified process for submitting articles.
Home Archives Calendar Gallery Store Links Info

Our End-Of-Year Fundraising Drive is in progress. Please visit out home page to see this and other announcements:     Thank you. --Jody

MMD > Archives > March 1996 > 1996.03.29 > 04Prev  Next

Ampico Roll 2921 Project Progress Report
By Wayne Stahnke

Hi there, Dean.

I thought you would like to know the progress and status of the effort to create an exact replica roll of Ampico Roll No. 2921, "I've Got to Sing a Torch Song," for you. I was able to locate and borrow a copy of the roll, which arrived on Wednesday. I reconstructed the master roll and sent it off by modem for perforating.

The next step is to get the perforator set up for this unusual roll. During this period (around October, 1933), new Ampico popular rolls were perforated on converted Duo-Art machinery. These rolls are unusual in several respects.
First, the hole diameter is about 1.75 mm, as compared with the 2.00 mm diameter holes in "classical" Ampico rolls made with Ampico machinery.
Second, the punch advance is 384 punch steps per foot, as compared with 356 punch steps per foot. Third, the webbing pattern is of the Duo-Art variety, complete with special webbing for the melody so that the eye can follow the melody line in the paper roll as it is played.

To make an exact replica roll, we have to match all of these parameters. The punch diameter of the perforator we will use is about 1.70 mm, very close to the size used in the original roll, and does not present a problem. We will use special gears to achieve the punch advance; preliminary calculations indicate the actual advance will be 384.10 punch steps per foot, or within 0.03 percent of the target advance; this is extremely close (in fact, original rolls from the period show much more variation than this from one batch to the next). The webbing has been recreated by simply reading all of the original webbing from the original roll, so the match will be perfect, including the special webbing for the melody line.

I will keep you informed about the progress of your effort. With best regards, I remain

Sincerely Yours,

Wayne Stahnke

(Message sent Fri 29 Mar 1996, 16:53:35 GMT, from time zone GMT-0500.)

Key Words in Subject:  2921, Ampico, Progress, Project, Report, Roll

Home    Archives    Calendar    Gallery    Store    Links    Info   

Enter text below to search the MMD Website with Google

CONTACT FORM: Click HERE to write to the editor, or to post a message about Mechanical Musical Instruments to the MMD

Unless otherwise noted, all opinions are those of the individual authors and may not represent those of the editors. Compilation copyright 1995-2018 by Jody Kravitz.

Please read our Republication Policy before copying information from or creating links to this web site.

Click HERE to contact the webmaster regarding problems with the website.

Please support publication of the MMD by donating online

Pay via PayPal

No PayPal account required

Translate This Page

. .