| 摘要 |
<p>A metering and mixing device is disclosed including a hand truck carrying a couple of tanks of varied capacity, one for water, the other for the cleansing agent, which are connected to an atomizing lance, and a plurality of valves , feed cocks and meters for controlling the flow of water, detergent and compressed air from said tanks through the atomizing lance. The latter is provided with a first chamber for mixing the detergent with water, and a second chamber for the foaming. Both the metering of the detergent and the foaming can be controlled through hand controls provided on the lance. <IMAGE></p> |
