Filto

A little history.

image of Robert Smith in his factoryimage of Robert Smith and his wife dancingimage of Robert Smith

Robert Smith, originally from Concord, NC, had been in the Navy 21 years when he retired and headed to Burgaw, NC, to continue working on his pipe dream in 1956. He wanted to smoke a pipe that was milder and cooler than conventional pipes, so in 1945 he went to work developing an aluminum shank pipe and applied for his first patent in 1946.

The main difference between this new pipe and others on the market is that the smoke passes through the stem three times instead of just once. The hurdle was keeping the pipe lightweight with this new filtering system, but he proved that the aluminum shanks could work at nearly half the thickness as naysayer experts thought possible.

By 1964 sales were exceeding manufacturing capabilities and buyers were spreading across the country. In the beginning, the little backyard factory only manufactured shanks and assembled parts ordered from other vendors. But profits from early sales afforded Smith to buy more equipment and begin manufacturing all parts onsite.

Around 1980, Smith sold the business to Dr. Grabow, the largest quality pipe manufacturer in the world.

image of several Filto pipes

Some science.

patent sketch of Filto pipe

Smith's first patents in 1953 describe a pipe that used only tobacco as a filter, though cotton could also be used, and the first version of the retroverted air flow system Filto would become known for. But he continued to improve the pipe over time, with later patents that addressed issues such as clogging and easy cleaning.

The interchangeable parts are easy to assemble. The bowl is made of wood, including briar from Algeria and Spain, dipped into a vat of hot stain. It's anchored by a non-clog screw to the Alcoa aluminum alloy shank that housed the RETRO-FLOW filter.

The RETRO-FLOW filter works by pulling smoke up through the outer cooling chamber, then back through the mid section, and up again through the center basket. The curved shape of the basket allows the smoke to travel between it and the surfaces surrounding it, which prevents clogging of the tars and permits free draw at all times. Because of the retroverted flow of the smoke, the condensing area for the tars is at least twice the usual length of a conventional filter area. This assures greater filtering and better cooling for the smoke.

Filto was the coolest, mildest smoking pipe of its day. Tested along 6 leading brand pipes, results showed that smoke from Filto contained 1.3 as much nicotine tar as the next lowest pipe in this test. Filto was also the lightest pipe of its size, weighing less than an ounce.

See patents for more detail: Smoking pipe 1953, Smoking pipe 1953, Smoking pipe 1965, Anti-clogging fluid flow fitting 1970, Bit construction for smoking pipes 1973, Change-a-bowl pipe 1983)

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