One of Disstonís main stays in production line
the ever popular D8 thumbhole or dual grip rip saw. The saw
shown here is an
early 1880's era, 28" (blade length) with a 5ppi graduated to
6ppi at the point.
years the term "variable pitch" has been used on saws that have
"graduated teeth". Historically, this term is actually not correct.
was a term used in all of the old catalogs and saw literature
that meant the same as the "rake" on the front of the teeth.
Think of it as the same as the "pitch" on your roof. "Pitch" is
used on screws or threads and to my knowledge was never used on
saws back in the day.
has plenty of blade width left along with a lightly breasted
(crowned) cutting edge. The blade is clean for a 130 year old
saw and has been hand polished to a smooth & slick surface. It
does have some very light pitting in a few locations, an area
that appears to have had some water damage, but nothing that
presents a performance problem.
back pattern was patented by Henry Disston in 1874 and as time
went on became one of his most prolific sellers. Disston claimed
this to be "The saw most carpenters use".
radial cut curve at the back of the blade rested against a like
cut curve in the wood handle that supposedly creating a better
early-style keystone etch and script can still be read.