A water-pipe patent later prompts a comparison with African designs

On 12 August 1980, the United States issued Patent 4,216,785, titled “Water pipe or bong”, to William V. Erickson, Paul K. Jarvie and Fred L. Miller. The application had been filed in 1977. It concerned a particular design, not the invention of smoking through water.

Geographer Chris S. Duvall later used the patent to ask a different historical question: whose technical knowledge becomes visible when the history of cannabis paraphernalia is told through familiar Asian designs and American inventions?

The documented design

The patent added a separately controlled air tube extending below the water. Its background acknowledged older hookahs and bamboo bongs. The drawing reproduced here identifies the additional tube as part 40.

Duvall compares that arrangement with nineteenth-century African pipes. The comparison concerns ways of admitting air and clearing a smoke chamber, rather than a claim that all the objects were identical.

An older Angolan solution

Duvall cites an 1832 Angolan account describing an opening in a calabash pipe. He also reproduces an engraving of a mutopa published by Henrique Dias de Carvalho in 1890. The small opening lies above the water chamber, near the base of the gourd’s neck.

In Duvall’s analysis, this arrangement offered a simpler solution to a related problem: air could enter above the water without a second submerged tube. His point is that African makers had developed sophisticated airflow control long before the modern patent.

The calabash water pipe also belonged to social histories of travel, conversation and communal smoking. Its technical form cannot be separated entirely from the people who made, carried and shared it.

What the comparison establishes

Duvall’s criticism challenges a selective history of invention. African technologies can disappear when written accounts privilege better-known objects from elsewhere, even where older descriptions and illustrations survive.

That historical argument does not establish direct copying by the American inventors. Nor does it decide the legal validity of particular patent claims. It identifies an earlier documented design that deserves a place in the comparison.

The 1980 grant is therefore a useful reference point in the material culture of cannabis, alongside evidence from Angola. It was a technical patent, not a measure legalising cannabis or recognising a right to consume it.^[1][2]