A krummhorn, or crumhorn, is a J-shaped musical instrument, a double-reed woodwind; unlike the hautboy, the krummhorn’s reeds are enclosed in a mouthpiece. It dates from the 15th Century; the illustration is taken from Virdung’s Musica Getutscht, 1511 [Montagu 90]. The krummhorn’s mouthpiece is to chief by Society default. For related charges, see cornetto, recorder.
Eochaid the Musical bears: Gules, in saltire two krummhorns argent.
Giannetto Bello bears: Gules, on a pale nebuly endorsed argent a krummhorn sable.
The “weaver’s knot” is a Society invention; while weavers certainly used knots in period, we’ve no evidence of this knot being particularly associated with weaving, and no period heraldic examples have been adduced. Pending documentation, the weaver’s knot has been disallowed for Society use.
Margaret Johanna van Artevelde bears: Per pale potenty argent and vert, in bend a weaver’s knot sable and a woad plant Or, stalked and leaved argent.
The term “knot of two hearts voided and braced to form a single cord” is the Society’s blazon for a knot found in the arms of Schulthaf, 1548 [Vigil Raber’s Armorial of the Arlberg Brotherhood of St. Christopher, fo.130].
Elisabetta Camilla di Raffaello bears: Or, a knot of two hearts voided and braced to form a single cord azure.
The “trefoil knot” is a closed loop with three lobes; it’s a more rounded variant of a triquetra. Its blazon is a simple description of its form; no examples have been found of its use in period armory.
Bruce Draconarius of Mistholme bears as a badge: Two trefoil knots braced.
The “Stafford knot” is one of the best known heraldic knots. It’s seen on the standard of Henry Stafford, Earl of Wiltshire c.1520 [Walden 101]. The modern term “overhand knot” refers to this knot.
Uilliam Twit of Witlow bears: Per fess gules and Or, three Stafford knots counterchanged.
The “loop of rope with ends crossed” isn’t strictly a knot, but is included here as an example of rope figures in period armory. It’s found in the Polish arms of Szamotuły, c.1460 [GATD 119v].
Thomas the Green bears: Per pale vert and argent, a loop of rope, ends crossed in base, sable.
The “quatrefoil knot” is a closed loop with four lobes. The blazon is a simple description of the knot’s form. We have no examples of its use in period armory.
Eilis ni Roibeard O’Bourne bears: Or, within a quatrefoil knot azure, a rose purpure, barbed and seeded proper.
The “masthead knot” is traditionally used for jury-rigging a mast; however, we have no evidence that it was ever used in period, by sailors or by heralds. It has been disallowed from Society use.
Donal mac Ruiseart bears as a badge: A masthead knot sable.
