912 



Popular Science Monthly 



Several tons of stones were used to insure the safety of these henhouses. Care was taken 

 to place the stones directly above the roof supports of the partitions to prevent sagging 



Anchoring the Henhouse in 

 Cyclone Districts 



ARANCHP:R in Southern California had 

 been troubled by the severe wind- 

 storms of that section, which threatened 

 to wreck his henhouses. FinalK- he thought 

 of weighting down the roofs with hirge 

 boulders weighing from thirty to fifty 

 pounds. He was careful to place them 

 directly above the roof supports, that is 

 above the four walls and the partitions. 



A British Motor-Bus Run on 

 Ordinary Coal Gas 



THE scarcity' of gasolino in England and 

 its consequent high i^rice has caused 

 the owner of the mcHor-bus, shown in the 

 accompanying illustration, to use ordinary 

 coal gas to drive it. This is new in applica- 

 tion yet old in principle. Many American 

 automobile manufacturers have used coal 

 gas to test their motors, because it is 

 considerably cheaper than gasoline now. 



The special fea- 

 ture of the method 

 illustrated here is 

 that the gas is car- 

 ried under low pres- 

 sure in a large 

 bag strajiped 

 to the roof 

 of the 'bus, 

 instead of 

 in steel cylin- 

 ders at high 

 pressure. This 

 eliminates thecost 

 of com pressing the 

 gas and enables it 

 to be fed into the 

 bag direct from 

 the town sujiply 



The gas is carried under low pressure in 

 a large bag strapped to the roof of the 'bus 



tank line anywhere along the route. 

 A flexible jiiiie is used to convey the 

 gas from the bag to the engine intake mani- 

 fold just above the throttle, the function of 

 the carbureter being eliminated, except to 

 provide a sufficient amount of air to mix 

 with the gas fuel. An ordinary' cock, 

 placed in the gas line close to the motor 

 and directh- coupled to the throttle-valve 

 Ie\'er, controls the supply in accordance 

 with the engine speed. 



The gas bag, a simple canvas sack w ith a 

 rubber insertion, does not offer much head 

 resistance, because it giv^es with the wind 

 and presents a streamline form. It holds 

 four hundred and fifty cubic feet of gas, 

 which is sufficient to dri\e the 'bus for 

 twelve miles without refilling. It is said 

 that by test tiic cost of gas fuel for the 

 'bus is but one cent a mile, while with 

 gasoline it is six cents per mile. 



Many other tests of ordinary town gas 

 for running automobiles have been made 

 both here and in England. A Glasgow 



resident ran his 

 automobile on 

 ordinary town gas 

 )\ remo\ing the 

 jet nozzle of the 

 gasoline carbure- 

 ter and substi- 

 tuting a grilled 

 plate. This 

 was ilone to 

 l)re.ik up the 

 flow of gas 

 and to enable 

 the air to mix 

 with it prop- 

 erly. A IcNcr 

 on t h e steering 

 wheel controlled 

 the amounlof giis. 



