92 Description of a Machine for raising Coals 



shall be pleased to appoint ; when the great simplicity and 

 advantage will appear evident. 



I am, my lords and gentlemen, 



your most obedient and respectful seivant, 



Edmund Turrelju. 



No. 40, Westmoreland Street, Goswell Ro.-xd, 

 April 10, 1806. 



Ti) the Members of the Sociefy of 

 Arts, k2fc. 



Certificates from Messrs. J. Haynes and Son, Westmore- 

 land Buildings; John Kelly, Hooper-Street, Clerkenwell ; 

 John Foster, Author-Street, St. Luke's, and William Fos- 

 ter, Author-Street, St. Luke's, state, that they have been 

 in the habit of using for upwards of twelve months, Mr. 

 Turreli's muffles, and that they are greatly superior to any 

 they have hitherto been able to procure, and thai it is their 

 opinion their durability may be completely attributed to his 

 improved method of moulding them. 



XXXVI. Description of a Machine for raising Coals or 

 other Articles from Mines. By Mr. Gilbert Gilpin*. 



SIR, 



J. HE improvement of the machines in use for raising coal 

 and ore from the mines, has Ions; been a desideratum ot the 

 Society for the Encouragement of Arts, Manufactures, and 

 Commerce, and they have repeatedly offered a premium for 

 that purpose. 



Those in general use (from the increased expense of horse 

 labour), are worked by a steam engine, attached to a crank 

 of twenty-one inches radius, wedged on a shaft along with 

 a fly wheel, eleven or twelve feet in diameter, and pinion 

 Avhecl, of eleven teeth, which latter works in another of 

 sixty-four teeth, on the shaft of which is a plain cylindrical 

 barrel, from four to six feet diameter, and nine or ten feet 



* From Transactions of the Society for the Encnuragemenl of Arts, Manurac- 



ttires, and Commerce, for 1807. Twenty g-uinedo were voted by the Society 



to Mr Gilpin for this invention. 



long; 



