GLOBE TIME-PIECE. '85 



the wheels a, b, c, are turned, the laft of which being 

 immoveable on the fixed cannon e turns the wheel b fincc 

 with its axis it move round the faid cannon, which is the 

 pole of the ecliptic, once in a year. Again the moon's 

 axis K is turned by a wheel d fixed to an arbor puffing 

 through the cannon e and on its lower end carrying ano- 

 ther wheel, which is turned one tooth per day, by a 

 pin fixed in the globe. If it is required for the moon to 

 turn on its axis fo as to keep the enlightened fide to the 

 fun, it may be done by fubfiituting for the arc L, the 

 horizontal arm R at the extremity of which let there 

 be the arbor and wheel S of the fame fize as the wheel 

 at K and turned by it with its wire W at the lower 

 end of which is the moon. It is obvious from the 

 diftance of the wheels that they are defigned to be 

 turned by bands. And here I fhall avail myfelf of 

 Mr. Hawkins's newly invented fpiral wire bands, which 

 being elaftic are applicable to all kinds of machinery 

 without the inconveniency of altering with the wea- 

 ther. 



The piece is wound up by a key at the fouth pole, 

 which pole is a cannon connedled with a frame within the 

 globe, containing the wheel work : and the north pole 

 is the fame being firmly fixed to the hoop BB. The 

 cannon E and circle DD are made to revolve once a 

 year in the following manner. On the poll within 

 the cannon E is a lever, which once a day is drawn 

 afide by a pin fixed in the globe near the antardic circle, 

 and by a wire attached to its lower end, a crank near the 

 edge of the foot is pulled, by which a circle having t^6^ 

 teeth is moved one tooth per day, which wheel is con- 

 nected with the plane FF, unlefs that is defigned to 

 be ftationary, and in that cafe, the wheel muft conncdl 

 with the cannon E by a wire which will ferve to fupport 

 the fun's ftem, and the movement is effeded. From 



the 



