'159 i' 175 j 



Plate 3d — Figure 2. 



ii throvvsting machine* intended to be worked by hand. B is the 

 handle. It is fixed on the spindle R, which carries a wheel D, to give 

 motion to a pinion upon the upper end of a vertical axle E; this, at the 

 lower end, has a drum or wheel F, to receive an endless strap or band 

 a a, which encompasses the oval frame G, and gives motion to all the 

 spindles at once. 



The spindles b b are placed perpendicularly in the frame G H; their 

 points resting in small holes, in pieces of glass which are let into the 

 oval plank G, and'the spindles are, also, received in collars affixed to an 

 oval frame H, which is supported from the plank G by blocks of wood: 

 </and a are small rollers, supported in the frame G H in a similar man- 

 ner to the spindles. Their use is to confine the strap a to press against 

 the rollers of the spindles with sufficient force to keep them all in 

 motion.. 



The thread is taken up as fast as it is twisted by a reel K, which is 

 turned by a wheel h and a pinion i upon the end of the principal spin- 

 dle R. The threads are guided by passing through wire eyes fixed in 

 an oval from L, which is supported in the frame of the machine by a 

 single bar or rail //; and this has a regular traversing motion backwards 

 and forwards, by means of a crank or eccentric pin k, fixed in a small 

 cog wheel, which is turned by a pinion upon the vertical axis E: the 

 opposite end of the rail /, is supported upon a roller to make it move 

 easily. By this means the guides arc in constant motion, and lay the 

 threads regularly upon the reel ky when it turns round and gathers up 

 the silk upon it, as shown in the figure. 



One of the spindles is shown at ?', without a bobbin, but all the 

 others are represented as being mounted, and in action. A bobbin is 

 filled upon each spindle, by the hole through it being adapted to the 

 conical form of the spindle, but in such a manner that the bobbin is 

 at liberty to turn freely round upon the spindle. A piece of hard 

 wood is stuck fast upon each spindle just above the bobbin, and has a 

 small pin entering into a hole in the top of the spindle, so as to oblige 

 it to revolve with the spindle. This piece of wood has the wire flyer 

 b fixed to it: the flyer is formed into eyes at the two extremities; one 

 is turned down, so as to stand opposite the middle of the bobbin e, and 

 the other arm b is bent upwards, so that the eye is exactly over the 

 centre of the spindle, and at a height of some inches above the top 

 of the spindle. 



The thread from the bobbin c, is passed through both eyes of this 

 wire, and must evidently receive a twist when the spindle is turned; 

 and at the same time by drawing up the thread through the upper eye 

 h of the flyer, it will turn the bobbin round and unwind therefrom. 



* This is taken from Rees's Cyclopaedia, and is precisely llie same as that rcpre 

 sented in the French" Dictionary of Arts and Sciences," printed at Keufcliatel, 1765, 

 and in the Nouvelle Bncyclopaedie Methodique, Paris, 1786. The figures of the vari- 

 ous parts, and the elevation of the machine, fill two foUo pag'es. Iri France it ia caller! 

 an " ovnle" 



