A Handbook of the Destructive Insects of Victoria; With Notes on the Methods to Be Adopted to Check and Extirpate Them Volume 1 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1891 edition. Excerpt: ... APPENDICES. ILLUSTRATIONS OF SPEAY PUMPS AND OTHER MACHINES IN USE FOR THE DESTRUCTION OF INSECTS. The object of including in Part I. of the Handbook illustrations of the various spraying pumps and other insect-destroying machines now in use either here or in America is that farmers, fruit-growers, vignerons, and others may be able, by aid of figures and descriptions, to select for themselves such articles as appear best suited for their requirements; and as our rural population is in some districts scattered and so far removed from the great centres of population, I have thought it advisable to furnish some particulars as to cost, &c, as also the names and addresses of firms from whom the machines may be obtained, taking them in the order in which I have received the particulars from the owners or their agents; the author of each article or description being responsible for the statements contained therein. APPENDIX I. Spray Pumps, Etc. Knowles' Improved Sprat Garden Pump. (See Fig. 1.) Description: Fixed in a strong galvanized pail of any capacity is a brass cylindrical tube, which contains the plunger and piston; at its base is a tripod of cast brass, in the centre of which is a ball-valve, which gives ingress but not egress to the liquid to be ejected. This is surrounded by a larger cylinder of brass, which has in its lower end a flat valve connecting it with the inner cylinder, and on the outside of the upper end is fixed a hose-pipe of indiarubber (which may be of any length), to which is attached "An improvod spray distributor." Action: The plunger being lifted by a stirrup-shaped handle fixed to the upper end of the piston-rod, the liquid is drawn out of the pail through the ball-valve into the inner cylinder. On the plunger...