Popular Science Monthly 



A new British piston ring, built on a new 



principle, for use on motorcycles and light 



automobiles 



A Novel British Piston Ring 



A BRITISH piston ring, especially 

 adapted to motorcycles and light 

 motor cars, has been constructed along 

 entirely new lines, shown clearly in the 

 accompanying picture. Nothing hereto- 

 fore has appeared on the market, which 

 even resembles the Gaskell ring, as it is 

 called after its inventor. 



The ring is made up from three 

 segments, held in place by three plungers, 

 inserted in recesses spaced equally round 

 the circumference of the piston and 

 slotted to receive the ring. They are 

 held up to their work by small helical 

 springs, which tend to press the rings 

 against the inside of the cylinder walls. 

 One of the plinigers is fitted at the center 

 with a small stud, which engages small 

 recesses cut in the ends of two ring 

 segments. This pin, shown on the left- 

 hand side, prevents the ring from turn- 

 ing as a whole. The groove in the pis- 

 ton is deep, and only one ring is required, 

 which is not distorted by being forced 

 over the larger head of the cylinder pis- 

 ton into the slots. This is an advantage 

 which cannot be gainsaid. Compression 

 is good and frictional losses small in this 

 type of ring. 



ACCORDING to the report of the 

 Police Commissioner of New York 

 the policemen of that city are healthier 

 than those of London and healthier than 

 the soldiers of the United States Army. 

 The average ])ercentage off duty because 

 of physical disability was 2.24 for New 

 York policemen as against 2.43 per cent 

 for enlisted men in our army, and 2.35 

 for the London police. 



411 



This Factory Burns "Sauerkraut" 

 for Fuel 



A WESTERN paper mill uses "sau- 

 erkraut" as a fuel for firing its 

 boilers. Lovers of this Teutonic delicacy 

 need not be alarmed, however, for the 

 "sauerkraut" used in this reckless man- 

 ner is not to be bought at the corner 

 grocery store. This "sauerkraut" is a 

 by-product of their pulp mill and looks 

 so much like the vegetable that it was 

 given that name in the mill. 



The "sauerkraut" of the pulp mill is 

 in reality the coarse material that is not 

 completely ground up in reducing the 

 logs to pulp. It is caught in screens, 

 when the ground pulp is floated away 

 from the machines, and is dried and de- 

 livered to the boiler rooms, where it is 

 used for fuel. 



A handful of "Sauerkraut," not the real 



thing, but the kind used for fuel. It is 



really wood pulp, the rejected portion of 



a paper mill's product 



