Implement Show at Bury St. Edmund's. 623 



road metal it must effect a savino^, provided there is sufficient 

 work to do. Cameron's steam-pump, exhibited by Tangye, 

 Brothers, and Holman, London, alluded to in the judges 

 report, is an exceedingly ingenious invention. We venture to 

 extract a short descuiption from Eufjineerinfj, which publi- 

 cation contains a better account than we could give. " This is 

 the simplest of the class of pumps with steam moved valves 

 which has come under our notice, at each stroke the steam -piston 

 knocks open a small piston valve which admits steam to a large 

 piston, one on each end of the slide valve, and which work the 

 latter by direct action of steam. These pistons (to the valve) 

 have no packing, and are the simplest possible. They cushion 

 perfectly. A handle on the outside puts on the slide valve at 

 starting, in case it is not well over to admit steam. The best 

 test of steam-pumps of this class is to see, not how fast, but how 

 slow they will go, and we worked Cameron's so as to make but 

 a single stroke per minute, the stroke being but a few inches in 

 length. At these very slow speeds the stroke is not gradual but 

 intermittent, the engine stopping to collect steam at the end of 

 the stroke. The action is certain at all speeds, and Avhen 

 working at full speed and with 100 lbs. pressure in the air 

 vessel, the suction hose may be suddenly lifted out of the water 

 without the pistons striking the ends of the cylinder covers. 

 The parts are so accessible, that although still hot with steam, 

 we had it to pieces in hardly more than a minute." We have 

 only to add to the above excellent description that the price of 

 this pump is 30/. 



C. Burrell's machine for shelling and dressing clover and 

 trefoil seed, with patent separator for removing weed seeds, 

 appears a valuable invention ; by submitting the seed to a double 

 operation, the shells are completely removed, and the seed is not 

 broken. 25 sacks of clean seed can be thrashed in a day. Price, 

 60/. 



Gooday's multiple needle thatching machine, is an improve- 

 ment on Magg's and Hindley's invention. The straw being 

 carefully drawn and laid on a table is passed between rollers and 

 fastened together by a lock-stitch. The price is moderate, and 

 provided the work can be done with sufficient celerity, this 

 promises to be a useful addition to our agricultural novelties. 



