May 26, 1733

Flying shuttle

John Kay receives patent No. 542 for his wheeled shuttle

The date remembered as the flying shuttle's introduction was a patent grant — and the patent covered a wool-dressing machine too, with a shuttle Kay called wheeled, not flying.

26 May 1733: a grant, not a demonstration

On 26 May 1733 the Crown granted John Kay of Bury patent No. 542. A transcription of the specification describes two inventions — a machine for opening and dressing wool, and a shuttle for weaving broad woollen or linen goods.

The shuttle ran on four wheels over the lower part of the web and along a board about nine feet long, propelled from side to side by a cord controlled by a weaver seated in the middle of the loom. That let one weaver work a broad loom which had previously needed a worker on each side to pass and catch the shuttle.

What happened that day was a legal grant: fourteen years of exclusivity covering England, Wales and Berwick-upon-Tweed.

26 May or 6 June — a calendar, not a disagreement

Britain was still on the Julian calendar, so the patent is conventionally dated Old Style to 26 May. Its Gregorian equivalent is 6 June 1733, which is why the same grant sometimes appears eleven days later in modern accounts.

Both dates point at one document, and the sources do not disagree about what that document was. What they will not support is a public unveiling: the date establishes the patent grant, not a first successful demonstration or commercial use.

Kay's own word for the device was the wheeled shuttle; "fly shuttle" and "flying shuttle" became the familiar names later.

After the grant

Adoption went slowly and unevenly across weaving regions and textile branches. Recent scholarship notes the flying shuttle was little used in Lancashire cotton weaving before the mid-1760s, and historians identify the familiar story — that its yarn shortage called forth the spinning jenny — as a traditional challenge-and-response explanation rather than an established chain of cause.

Kay later struggled to collect royalties, litigated heavily, and moved to France with state support. The patent did not convert the industry on its own: manufacture, licensing, copying and litigation followed later.

Sources

Researched 23 Aug 2026 8 sources 2 audit passes Traditional date

How this was checked

Researched from the web into a fact sheet, rewritten from that sheet, then audited against it by a different model. How the pipeline works →

Traditional date. This date is the conventional one, not one fixed by a contemporary record.

What the sources leave uncertain

The patent is conventionally dated 26 May 1733 because Britain still used the Julian calendar. The equivalent Gregorian date was 6 June 1733.
“Flying shuttle” became the familiar name, but Kay’s contemporary description was a new or wheeled shuttle.
The date establishes the patent grant, not necessarily the first successful demonstration or commercial use.