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: : 2 : THE MARINE REVIEW ‘July, 1917 GOLD MEDAL » Highest Award MarineDiesel Engines Panama-Pacific ee Exposition 120 H.P., Four Cycle Nelseco Diesel—Heavy Duty Reversing Gear Type 00,000 H. P. NELSECO DIESEL ENGINES In Service in American and Foreign Vessels 50,000 H. P. Now Building Sizes: 120, 180, 240, 360, 480 to 3000 H. P. NEW LONDON SHIP & ENGINE CO., Groton, Conn., U. S. A. No. 72 Portable Pneumatic Grinder Equipped with Vanadium Pressed Steel Connecting Rod and Pistons; Corliss Valves and Roller Bearings. May be used as a Saw for Cutting Grooves in Wooden Ships. In making the grooves the usual procedure is to cut two slots 314" apart and then take a mallet and chisel and split out the wood between. This work may be done in one- third the time required to saw the grooves by hand. Our: nearest branch office will be glad to give you full — particulars regarding the method of fitting the No. 72 Grinder up as a saw and the man- ner in which the work is performed. In wooden ship building in certain parts of the country the ribs are reinforced through midships to prevent hogging. This is done by cutting out grooves on a diagonal into which are fitted straps of iron about 314” wide, the grooves being about 14” deep. This work may be done at a great saving of time, labor and expense by using the No. 72 Chur Portable Pneumatic Grinder fitted as a saw. This is done by making up an iron cage with side handles and front handle, which is used for steadying the machine and clamping on to the usual hand grip on the spindle bearing. This extends over the regular guard, giving Shipped on : Cutting slots to reinforce ribs through midships to prevent hogging with a No. 72 Thor "7 oo a front handle. Grinder used as a saw. The work is done in one-third the time required by hand. Trial Free Chicago New York Pittsburgh Detroit San Francisco Birmingham Montreal Please mention THE Martine Review when writing to Advertisers