48 



TEE WORLD'S ADVANCE 



The Lifting Power of this Deck Girder Bridge is Furnished 

 by a Gasoline Engine. 



GASOLINE ENGINE OPERATES 

 DECK GIRDER BRIDGE 



There has recently been constructed 

 for the Canadian Northern Railway at 

 Kamloops, British Columbia, a deck 

 girder bridge 1,209 feet long and a deck 



ends. 



girder lift span 93 feet long, 

 There are 12 fixed spans also of 

 93 feet length. Approaches at 

 both ends of the bridge total 

 about 1,100 feet. The lift span 

 weighs 118 tons and is fully 

 counter-weighted. The sixteen 

 1 1 /4 -inch lifting cables are equal- 

 ized in the attachment to the 

 span. Centering castings pro- 

 vide for keeping the span in 

 proper alignment as it conies 

 down to bearing and also take 

 the longitudinal braking thrust. 

 The lift of the span is 53 feet, 

 giving a 55-foot clearance above 

 high water. The motor is capa- 

 ble of raising the span in 100 sec- 

 The lifting power is a gasoline 

 which, with all the machinery 



engine 



except the operators* levers, is located 

 below the deck, at the middle. Limit 

 switches coming into operation near the 

 ends of travel of the span control the 

 igniter circuit of the engine. 



A SCALE IN WHICH ELECTRIC- 

 ITY DOES ALL THE WORK 



A scale engineer of Columbus, Ohio, 

 has recently demonstrated the first work- 

 ing model of an automatic weighing and 

 recording scale. It is stated that 

 his invention bids fair to revolu- 

 tionize the manner of weighing 

 coal, iron, lead, zinc, copper and 

 other mined products. His scale 

 can work as high as twenty loads 

 per minute, and have each weigh- 

 ing operation accurate to within 

 an ounce on each 100 pounds, 

 while printing at the same time 

 a ticket showing each weight and 

 also recording on a tape the con- 

 secutive number of each load 

 and its weight. The scale is 

 operated by electricity and thus 

 eliminates all chance of mistakes, 

 common to human operatives. 



The scale is said to be not only 

 entirely automatic in operation, 



but also fool and cheat proof. It is 

 believed that the use of this type of 

 scale in the Colorado coal mines will go 

 a long ways toward settling misunder- 

 standings between miners and mine 

 owners, now so commonplace. 



A Scale in which Electricity Does all the Work, Both Auto- 

 matically Weighing Truck Loads and Keeping a 

 Permanent Record. 



