Leggi la descrizione dell'esperto
Marca :
Josiah Emery
Modello :
Josiah Emery autres horlogerie
Categoria :
Altro
Periodo :
XVIII secolo
Materiale della cassa :
Argento
Forma della cassa :
Rettangolare
Con diamanti :
Sì :
Colore del quadrante :
Bianco
Funzioni :
Cronometro
Descrizione :
POSSIBELY BY JOSIAH EMERY,VERY IMPORTANT EARLY;LEVER ESCAPEMENT,ONE OF ONLY 36 BELIEVED TO HAVE;BEEN MADE.;Signed by Gayetano Sanchez in London. Movement made circa;1790,later silver case with London hallmarks for 1831-1832.;Very important silver Chronometer with an early lever escapement;after Mudge in mahogany fitted display box. Retail by H.I.;Mackinney in Islington.;Three-body, consular, polished, maker's mark "P.W", swivel pendant.;White enamel, of regulator type with Roman chapter, outer Arabic;minute ring and subsidiaiy seconds.Signed H.I. Mackinney in Islington.;Gold spade hands.;Gilt brass full plate with cylindrical pillars, fusee with chair and;maintaùning power, straight fine lever escapement derived directly from;the model supplied by Thomas Mudge, the inventon The polished steel;escape wheel with all the lift on the pallets, but without any draw. Safety;action is provided by a gold dart and a steel roller with a rectangular slot;to allow the dart to pass at the appropriate moment. Arnold "double-S;type balance built on a gilt brass four-am wheel, the bimetallic "S" pieces;are each held by two rivets to a blued steel hollow lenticular-shaped;frame secured to the balance wheel itself by two screws, the free end of;each "S" piece cannes a threaded rod and a gold quarter nut for poising;and mean tune adjustnnent, two additional gold quarter screws are;fitted in slotted brackets. Helical blued steel balance sprnng. Typical;Emery gilt brass cock engraved with foliage, diamond endstone. Bayonet;fit gilt brass dust cap signed by Gayetano Sanchez en Londres Ano 1792.;C. Three-body, consular, polished, maker's mark "P.W", swivel pendant.;D. White enamel, of regulator type with Roman chapter, outer Arabic;minute ring and subsidiaiy seconds.Signed H.I. Mackinney in Islington.;Gold spade hands.;M. Gilt brass full plate with cylindrical pillars, fusee with chair and;maintaùning power, straight fine lever escapement derived directly from;the model supplied by Thomas Mudge, the inventon The polished steel;escape wheel with all the lift on the pallets, but without any draw. Safety;action is provided by a gold dart and a steel roller with a rectangular slot;to allow the dart to pass at the appropriate moment. Arnold "double-S;type balance built on a gilt brass four-am wheel, the bimetallic "S" pieces;are each held by two rivets to a blued steel hollow lenticular-shaped;frame secured to the balance wheel itself by two screws, the free end of;each "S" piece cannes a threaded rod and a gold quarter nut for poising;and mean tune adjustnnent, two additional gold quarter screws are;fitted in slotted brackets. Helical blued steel balance sprnng. Typical;Emery gilt brass cock engraved with foliage, diamond endstone. Bayonet;fit gilt brass dust cap signed by Gayetano Sanchez en Londres Ano 1792.
