APPENDIX III. 207 



The King Suction Machine. 



{See Figs. 23 and 24.) 



This machine was invented by Mr. J. A. King, of Boulder, 

 Colorado. It consists of two large tin tubes, about 8 inches in 

 diameter, with flattened, expanded, and lipped mouthpieces, B, 

 running near the ground. This horizontal opening or mouth is 

 about 7 feet long. The tubes connect at the upper extremity with a 

 chamber, C, in which is a revolving fan, which makes about 1,200 

 revolutions per minute. The tubes and fan, with the gearing, are 

 placed in a frame, D, 5 by 10 feet, mounted upon two large driving 

 wheels. E E plate represents this machine in operation. 



The air current made by the revolving fan creates a suction at the 

 mouth, which draws the insects up the tubes and into the chamber. 

 They are then thrown by the fan upon a wire screen, and from thence 

 drop into a kind of hopper, which conducts them to a bag. The 

 wire screen rapidly chokes up and must be frequently cleaned. Most 

 of the locusts are crushed and mangled by the rapidly-revolving fan, 

 so that the screen may be removed entirely and the locusts thrown out 

 behind. This machine works well on smooth ground or in a wheat 

 field while the wheat is yet short. The princij)le of the machine is 

 a good one, and we see no reason why some cheaper modification 

 of it should not be quite generally used early in the season. The 

 lips might be protected and less liable to beijd and get out of order 

 by moving on runners made to extend some distance in front. 



The Peteler Locust-crushing Machine. 



{See Figs. 25 and 26.) 



This apparatus was devised by Mr. F. Peteler, of Minneapolis, Min- 

 nesota. In a communication from the inventor, dated 8th June, 1877, 

 the following description is given. The machine is intended to be 

 drawn by horses, the drawing representing one to be drawn by a 

 team: — "The frame is mounted upon two wheels. The front is a 

 sheet-iron platform, over which revolves an elevator made of slats, 

 which carry the locusts into boxes, where they pass between rollers, 

 are crushed, and fall to the ground. The sides and top or back are 

 wire screws, the whole forming a scoop 16 feet long (on the bottom 

 19 feet), 8 feet high, the top of which can be lowered or raised 

 according to the height of the grain or grass." 



A more detailed description follows : — A A, driving-wheels ; B, 

 guiding-wheel ; D, setting-lever ; d, retaining-post ; G, endless 

 carrier ; Hh, gearing for elevator and crushing-shaft ; I, crushing- 



