398 



KEGRETTI AND ZAMBEA, HOLBORN VIADUCT, E.G., 



FIG. 2177, 



2179* Glass Blower's Apparatus, Patent, consisting of a 

 circular column of japanned zinc, table covered with 

 zinc (having brass-bound edges) double -action cir- 

 cular bellows, drawer, and universal -jointed iet 

 (fig. 2179) . . . 



2179f Ditto ditto without Zinc cover to the table 



FIG. 2179. 



5 10 

 500 



FIG 2178. 



FIG. 2179. 



FIG. 2178" 



2180 Hot Blast Blowpipe, for temperatures above those obtained by the ordinary 

 gas and air blowpipe. It will be seen by the wood-cut (fig. 2180) that the 

 tube of the Air Jet is coiled round the gas tube, both being heated by a 

 Bunsen Burner underneath, each being controlled by separate taps. 



The jet when reduced down to a small point of flame is nearly equal in power 

 to the Oxy-Hydrogen Jet, readily fusing a moderately thick Platinum "Wire. 

 It is a most useful arrangement for Chemical Soldering, and general 

 Workshop use. Price 16s. 6d. 



2181 Hand Blower (fig. 2181) for use with above 



16 



2182 Foot Blowers, for Blowpipe work, Autogenous Soldering or Furnace use. 



21s., 30s., 35s. 



