Quadder Maintenance

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1. Which Quadder?

While the Linotype Hydraquadder (in both Manually Controlled Hydraquadder and Electrically Controlled Hydraquadder) became the dominant Mergenthaler-supplied quadders for Linotypes, the Mergenthaler Linotype Company had an earlier non-hydraulic quadder. I think that this went under various names over the years. I haven't entirely sorted out its evolution.

I have a 1931 parts book, Catalog No. 31, for the "Double Quadding and Centering Device." By 1941, Catalog No. 31 had been renamed "The Linotype Self-Quadder." I also have some service documents from the early 1950s, reproduced here, which refer simply to the "M. L. Co. Quadder" in both a manually controlled version and an electrically controlled version suitable for automatic control by a Teletypesetter.

Note: In addition to the maintenance documents elsewhere and here, maintenance of the quadder requires an appropriate version of the parts catalog (Catalog No. 31) for it. I haven't done it yet, but someday I hope to digitize some of these; when I do they'll be in the "Catalogs" section of the overall Linotype Literature Notebooks.

2. Documents

Note: In addition to the maintenance documents elsewhere and here, maintenance of the quadder requires an appropriate version of the parts catalog (Catalog No. 31) for it. I haven't done it yet, but someday I hope to digitize some of these; when I do they'll be in the "Catalogs" section of the overall Linotype Literature Notebooks.

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The Linotype Self-Quadder: Its Operation and Maintenance (3rd Ed.)

622.14-D-W-2X. For Linotype No. 53640 and up. This is online on Bill Spurling's www.linotype.org.

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The Linotype Self-Quadder: Its Operation and Maintenance (3rd Ed.)

622.14-D-W-2X. For Linotype No. 53640 and up. This PDF of this document, which is in the public domain, was posted to the IntertypeWorld newsgroup. It seems to be a different scan than the one on Linotype.org.

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The Linotype Self-Quadder: Its Operation and Maintenance

622.14.1-E-OO-3X. For Linotype No. 57090 and up. This is online on Bill Spurling's www.linotype.org.

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Operation and Maintenance of the Linotype Self-Quadder

622.16-F-OO-35Z. For Linotype No. 61506 and up. This is online on Bill Spurling's www.linotype.org.

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Quadder Adjustment, S.I. 8

"Instructions for the Operation, Adjustment and Maintenance of the M. L. Quadder." Service Instruction No. 8 (December 10, 1951).

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Quadder, Electric (TTS Operated), S.I. 11

"Instructions for the Operation, Adjustment and Maintenance of the M. L. Co. Electric Quadder (Teletypesetter Operated)." Service Instruction No. 11 (February 1, 1952).

The PDF here includes (for reasons explained within it) a "Diagram of Assembler Slide Brake Release Mechanism" which may or may not really be a part of it. This Diagram is also reproduced in Miscellaneous and Orphan Maintenance Documents .

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Electric Control Rod Brake Mechanism, S. I. 8-1

"Operation and Adjustment of the Electric Control Rod Brake Mechanism for M. L. Quadder." Service Instruction No. 8-1 (April 1952). The language of titles and part names gets confusing here. Both the "Manual [Manually Controlled] Mergenthaler Linotype Quadder" as described in Service Instruction No. 8 (see above) and the "Electric [Electrically Controlled] Mergenthaler Linotype Quadder" as described in Service Instruction No. 11 (see above) had a mechanical "Control Rod Brake Mechanism." This present Service Instruction No. 8-1 describes an improved Control Rod Brake Mechanism. This improved mechanism is electric in its operation, but may be installed on both the Manual M. L. Quadder and the Electric M. L. Quadder.


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