Page History: Pre History of Radial Arm Saws
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Page Revision: 2008/04/03 23:17
Pre-History of the Radial Arm Saw
During the twentieth century the radial arm saw was introduced, evolved, became a great success over a couple of generations, and then became largely obsolete.
This section covers the history of circular cross saws before Ray De Walt's introduction of his first radial arm saw.
In 1869
Charles R. Tompkins patented a swing saw. Swing saws already existed then but this is the earliest swing-saw patent we have found. Tompkins manufactured his saw for many years, and his was just one of several such saws on the market.
Levi Houston Co.,
American Saw Mill Machinery Co.,
Bentel, Margedant & Co.,
Connell & Dengler Machine Co., and
Heston & Anderson are just a few of the other makers of swing saws. Swing saws are well suited for rough work but not to the precision work of a cabinetmaker or patternmaker.
Tompkins' swing saw
Connell & Dengler's swing saw
patented and manufactured a crosscut saw better suited to cabinetmakers.
C. B. Rogers crosscut saw
The C. B. Rogers saw used a large circular sawblade held in a fixed position above a sliding table. This saw worked well enough but required a lot of floor space and was costly to manufacture.
In the late 1880s,
S. A. Woods Machine Co. introduced a newly patented tablesaw where the work is held fixed and the blade is pulled forward through the work. This type of saw is better suited to crosscutting long or awkwardly shaped stock than an ordinary tablesaw; The Schamb Mill, maker of oval picture frames, uses an older, wooden-frame version of this type of saw.
S. A. Woods' sliding-arbor tablesaw
Mackintosh Hutchinson's radial arm saw
1915 ad
The patent drawing and advertisement above show Mackintosh Hutchinson's floor-mounted saw. Hutchinson's saw is not a modern design because it is powered by a belt (to a line shaft or motor), which complicates the mechanicals compared to a direct-drive saw. Hutchinson sold this saw both under the
Mackintosh Hutchinson name when he lived in Toronto, and under the
Hutchinson Manufacturing Co. name when he was based in Norristown, PA.
Raymond De Walt's Radial Arm Saw
In 1925 Raymond De Walt patented a direct-drive radial arm saw. As we have seen, the radial arm concept was not new, but putting a direct-drive motor in a yoke attached to a radial arm was.
![Drawing from De Walt's 1925 patent]()
Drawing from De Walt's 1925 patent
A first-generation DeWalt saw
Placeholder for a RAS history. A starting point is
http://owwm.org/viewtopic.php?t=35533