The Tea Bag Was a Sample Pouch. Customers Brewed the Whole Thing and Nobody Corrected Them.

US723287, granted in 1903 to Roberta Lawson and Mary Molaren of Milwaukee, describes a "tea leaf holder" — a mesh pocket for brewing a single cup without loose leaves in the water. It is one of the earliest American patents pointing at the tea bag.

It is also not the story most people know, and the more famous version is the more instructive one, because in it the inventor did not intend to invent anything at all.

The samples

Around 1908, Thomas Sullivan was a tea and coffee merchant in New York who sent samples to prospective customers. Tea samples conventionally went out in small tins, which were expensive.

To cut costs, Sullivan began sending his samples in small hand-sewn silk pouches instead. The intention was purely packaging: the customer would open the pouch, tip out the leaves, and brew them normally.

The customers did not do that. They dropped the entire pouch into the pot.

And it worked. The silk was porous enough to let the water through, the leaves stayed contained, and — crucially — the whole business of straining, cleaning the pot, and dealing with wet leaves simply disappeared.

Orders started coming back asking for tea in the bags.

The complaint that improved it

The early customer feedback was specific and useful. The silk mesh was too fine; water passed through it slowly and the tea brewed weak. Sullivan switched to gauze, and later producers moved to specialized filter paper — porous enough for fast extraction, strong enough not to disintegrate in boiling water.

The remaining refinements were mostly industrial: the heat-sealed paper bag, the string and tag so you could retrieve it without a spoon, the folded two-chamber shape that increases surface area, and the machines that could make thousands an hour.

The cultural split

The tea bag was adopted quickly and enthusiastically in the United States, where iced tea and speed were already dominant, and much more slowly in Britain, where it was regarded for decades as an inferior article that produced inferior tea.

Britain gave in eventually and completely — the overwhelming majority of tea drunk there is now brewed from bags — but the objection was never entirely wrong. A bag confines the leaves and restricts how much they can unfurl and circulate, which is why the finest teas are still sold loose, and why premium producers now use large pyramid bags that give the leaves room.

Sullivan appears not to have patented the bag, and the credit for it is, like the ice cream cone, genuinely distributed across several people including Lawson and Molaren's 1903 filing. What Sullivan contributed was accidental and decisive: he put tea in a permeable pouch and let his customers discover what it was for.

See the original

The full text and figures of US723287 are on patents.us.