Foundation learning this week in Work. Bone up on knots & splicing as well as screw threads for metalwork. Perfect for anyone working on a sail-driven engine lathe. You know who you are.
As long as we're at it, check out the thread pattern on our Milwaukee Quick-Release Bench Vises.
It combines the features of the "square" and "trapezoidal" patterns and usually called a Buttress thread. Compare this to the pure trapezoidal thread of Joel's antique Record vise below. Bear in mind that the Milwaukee employs a floating half-nut for automatic release, while Joel's Record uses a lever bar to disengage the threads and you will see how each is perfectly suited to the task. -T
Disclaimer: Articles in Work: The Illustrated Weekly Journal for Mechanics describe materials and methods that would not be considered safe or advisable today. We are not responsible for the content of these magazines, and cannot take any responsibility for anyone attempting projects or procedures described therein.
The first issue of Work was published on March 23rd, 1889. The goal of this project is to release digital copies of the individual issues starting on the same date in 2012, effectively republishing the materials 123 years to the day from their original release.
The original printing was on thin, inexpensive paper. There are many cases of uneven inking and bleed-through from the page behind. Our copies of Work come from bound library volumes of these issues and are subject to unfavorable trimming, missing covers, etc. To minimize harm to these fragile volumes, we've undertaken the task of scanning the books ourselves. We do considerable post processing of the scans to make them clear but please bear with us if a margin is clipped too close, or a few words are unreadable. We would like to thank James Vasile and Karl Fogel for their help in supplying us with a book scanner and generally enabling this project to get off the ground.
You are welcome to download, print, and pretty much do what you want with the scan for your own personal purposes. Feel free to post a link or a copy on your blog or website. All we ask is a link back to the original project and this blog. We are not answering requests for commercial downloads or reprinting at this time.
Until you realise one vise has the front jaw on the left and the other one has it on the right, comparing the threads is disturbing. What about fliping one of the pictures.
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