THK BEE-KEEPERS' REVIEW 



1 1-2 H. P. Hopper- Cooled National Engine 



79 



General Description 



In design National Engines l-.avc all 

 the strength needed to withstand con- 

 tinuous hard work. lOvery working 

 strain is properly provided for. 



The Cylinder is made of semi-steel, 

 noted for its remarkable strength and 

 density. iCveiy hopper cooled cylinder is 

 given a special high pressure water test 

 to guard against leaks in the cylinder 

 walls or jacket. The water space is 

 exceptionally wide and a di'ain at the 

 bottom of the cylinder allows water to 

 be taken out when necessary. 



The Crank Shaft is a steel drop 

 forging of the best quality, accurately 

 finished by grinding. 



The Connecting Hod is of malleable 

 iron and has an automatic lubricating 

 method. This takes care of the bearings 

 on both ends from the waste cylinder 

 oil — a saving of expense and trouble. 



The Piston is ground to a mirror 

 finisli and has automatic lubrication for 

 the wj-ist pin bearing. 



The Piston liings, three in number, 

 are eccentric and lap jointed. This is 

 the most perfect ring known. They are 

 ground like the piston. 



The Governor is of simplest design, 

 hit and miss, absolutely reliable and 

 economical in its regulation of fuel 

 consumption according to load. 



The Fly Wheels — Smooth running in 

 an engine, especially on truck, depends 



on the fly wheels. National Engines 



liave fly wheels that are accurately 

 turned and properly balanced. The en- 

 gines will i-un steady without blocking 

 the truck wheel.-?. 



The Mixer is (jui' famous design with 

 both needle valve and air sliutter reg- 

 ulation. These adjustments enable the 

 user to secure uniform results under 

 vaiying loads. 



Lubrication is ample throughout — a 

 sigit feed oiler on the cylinder and 

 automatic lubrication on the connecting 

 rod. The ciank bearings have hard 

 oilers. 



Ignition is either make and break or 

 jump spark. Each kind is of the simp- 

 lest character and perfect in adjustment 

 when the engine leaves the factory. 



National Engines are shipped I'eady 

 to rvm after careful tests at the fac- 

 tory. Unless damaged in transit the 

 engine will be ready for work as soon 

 as uncrated and supplied with fuel and 

 tub icating oil. 



Horse powei', 1V>: bore, 374; stroke, 

 41/2; speed R. P. M., 500; fly wheels, 

 diameter 16, weight 37; crank shaft di- 

 ameter, 114,; floor- space, 9x36; shipping 

 weiglit 200. 



Hand Trucks, $4.50 extra. 



Larger- sizes a matter of correspond- 

 ence. 



Price $32.50, Co-operative. 



Address all orders to the National 

 Beekeepers' Ass'n, Northstar, Michigan. 



Members who want to use some of those little 

 cuts, either those reacling'"EAT MORE HONEY" 

 or "KEEP MORE BEES," or cut without 

 reading for their letter heads, envelopes or 

 circulars can be furnished with them for 50c 

 each, postpaid. Address 



THE BEE-KEEPERS' REVIEW, 

 Northistar, Michigan. 



