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THE IRRIGATION AGE. 



THE PNEUMATIC PIPE DREDGE 



The Pneumatic Pipe Dredge is a new, inexpensive device for dredging sand, silt, muck and gravel, or any other 

 material or soil susceptible to rapidMisintegration by the action of water under pressure 



Its pipe 



From one to four or 

 even more pipes can be 

 operated from the same 

 scow; one pump and air 

 compressor serving for 

 all. 



or head "jets" itself 

 deeply into the material to be 

 handled, breaks it up and forces 

 it upwards through a discharge 

 pipe by the use of water and com- 

 pressed air mixed under high 

 pressure. It is not a suction or 

 centrifugal dredge. It is a 

 hydro-pneumatic ram. 



The Bed Rock Pneumatic or Compressed Air-Pipe Dredge. 



This shows the pipe lifting the heavy black sand out of one of nature's bed rock riffles. The precious minerals like gold and plati- 

 num have been trapped in these pockets or riffles for untold ages, but no method to recover these stored up treasures had been devised 

 before the advent of the pipe dredge. This dredge will enter these pockets and recover the values they contain. 



ATTENTION ENGINEERS. 



It is not possible to describe this dredge nor tell of its superiority in a few words. However, IF YOU HAVE USE 

 FOR A DREDGER, it will pay you and save you money to look into the merits of this device. It will also save time. Here 

 is part of what Mr. M. A. Nurse, for 18 years Chief Engineer of the State of California, says about the Pneumatic Pipe 

 Dredge. 



"Beyond question, the Pneumatic Dredge embraces the cheapest and best application and utilization of mechanical 

 and natural agencies for excavation and transmission of sand, silt, or any material susceptible of rapid disintegration by 

 the joint action of air and water under pressure, that I have ever known through an active experience of over thirty years 

 in river improvement and reclamation. It is simple in principle, cheap in construction, efficient in operation and must on 

 the score of economy and greater adaptability supersede other methods hi the broadest field of river^and harbor improve- 

 ment essential to our State and National development." 



HAVE YOU DREDGING TO DO? 



If you require a dredge for reclamation work, for levee building, for recovering sanu or gravel, for" filling, for channel 

 or harbor deepening, for mining or for lifting or moving any class of material excepting boulders, DON'T OVERLOOK 

 THE PNEUMATIC PIPE DREDGE. 



CHEAPEST AND BEST DREDGER IN THE WORLD. 



The Pneumatic Pipe Dredge can be installed anywhere 

 within .a few weeks for a small fraction of the cost of other dredges 

 and it requires only one-fifth the labor, one-fifth the power and 

 one-twentieth the cost of maintenance of any other dredge with 

 similar capacity. It handles from 40% to 60% solid matter all 

 the time and dredges handling from 25 cubic yards per hour to 

 20,000 cubic yards per day can be built and installed for rrom 

 $3,000 to $25,000. There is nothing to get out of order. Any- 

 one with common sense canTrun it.l'llt is "fool-proof." Don't 

 you think 



ITfaSPWORTH? WHILE^INVESTIGATING. 



_^One of these dredges is operating in the heart of the City 

 of Sacramento, California, on a contract for the city. Twice in 

 succession this dredge has been awarded city contracts on com- 

 petitive bids. Other contractors could not come within a mile 

 of the price bid for the work. Yet the dredge is ranking money. 

 It is practical results like this that talk. 



Sfor full particulars about thejdredge and its installation 

 on a royalty basis, address 



Pneumatic Pipe Dredge, Operating by Electricity, with Four 



Ten-Inch Discharge Pipes. Capacity over 15,000 Cubic 



Yards per day. 



HERBERT A. PARKYN, 1511 Marquette Building, CHICAGO, ILL. 



When writing to advertisers please mention The Irrigation Age. 



