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THE MARINE REVIEW SELF-CONTAINED, DOUBLE CYLINDER CARGO WINCH bad hole develops in the fuel bed, the lower needle falls to zero. The device is 20% inches high and can be installed in any convenient place in the engine 'room or. stoke- hold. It is pointed out that it serves as a ready reference by which the en- ginéer on watch can instantly -ascer- tain draft conditions. 'The gage is balanced to prevent it being affected by the motion' of the ship. Cargo Winch The unit shown in the accompany- ie ilustration is a cafgo: or ship winch developed by the Dake Engine (6. Grane Haven; Mich. Jt is .the result.of much study and is_ said to -eompbine strength with simplicity. The bed frame is an I-section type and is a one-piece. casting... Tihe drum brackets are T-section shapes to insure rigidity. They carry the crankshaft bearings: Both drum and crankshaft bearings are wide in pro- portion, lined with babbitt. The bear- ing caps are machined and fitted into machined pockets. i ' The cylinders and valve ¢hests are cast in one piece. By means of_spe- cial tools, the cylinder and valve chest 'bores are machined at one operation, assuring accurate alignment. The cylinders are fastened to the bed through machined pads. The pistons, which are shrunk on the piston rods against shoulders, are provided with two packing rings each. The piston rings are ground to an accurate fit after cutting. -This assures them fit- ting the cylinder walls snugly at all Pin points. The valves are of the pis- ton type; fitted with accurately ground rings to make them steam tight. The valve stems have brass bushings at the eccentric rod: connections. The outer ends of the valve stems slide in babbitted brackets. _ The crankshaft is cold drawn steel. The crank disks are cast iron, counter- balanced to insure smooth running. The disks are forced on to the crank- shaft and further secured by means of keys. The crank pins are turned steel; so proportioned as to give a large bearing stirface. They are forced into the disks and riveted over at the back end. The connecting rods are cast steel with flanges at each end. The flanges are machined with a flat surface for bolting the wrist and crank pin bear- ines i place. Fhe 'eccentric' rods are round wrought iron, provided with right-and-léft hand threads, one at each end for the purpose of adjust- ing the valves. The eccentric straps are cast steel, lined with babbitt metal, "Alter casting in place, the babbitt is peined and bored to fit the eccentric... The straps are made two pieces, machined to 'an ac- curate fit at the joints: The two halves are bolted together, several liners being interposed between the two sections for purposes of adjust- ment. The 'eccentric sheaves, or pulleys as they are sometimes termed, are cast iron, accurately machined and secured- in place by and screws. The wrist and crank pin bearings are cast steel, babbitt lined. These keys set December, 1919 bearings are provided with liners for taking up wear. The crosshead gibs are, bronze bearing on guides of ample width to insure maximum wear. The -drum shaft is cold rolled steel of large diameter to insure rigidity. The drum is cast iron, accurately balanced to insure quiet running. without vibra- tion. The face of the drum is hard chilled iron which msures maximum wear. a The drum brake, or compressor, is of the band type, made in halves, lined with hard wood blocks. Both ends are fastened to the brake band rocker which is keyed, to the foot lever. A 'spring 'is attached to the band to insure ready releasing. The gears -are cast iron while the pinions are cast steel. To insure safety the gears are covered with a heavy guard. The steam pipe connections to the throttle and cylinders are flanges. Some of the principal specifications of this winch are: Cylinders, eles ..;5..:.... 74% x 10 TLOFSECDO WED 2907). ce ke de 25 Pull on single line, pounds.....4000 Line speed, feet per minute....... 150 JOrum, toCitee a eS 14 x: 20 Drum. shaft, diameter, inches. ....;. 3% Crankshaft, diameter, 'inches... oi. 3 Crankpin, inenee (20.0. s4.. 24-3 Wrist pin, imetes <<... '.4..,. 1% x 2% Piston rod, 'dianieter, inches .%... 1y% Valve rod, diameter, inches. ..<.. 1% Winch heade wenes 060. 600% 10.12 Steam pipe, diameter, inches.......2 Exhaust pipe, diameter, inches...2% Line Throwing Guns All vessels of..the Emergency Fleet corporation are ito be equipped with line throwing guns and outfits and at the present time contracts have been placed for 900 of -these units. Among the. different types of line throwing guns being manufactured is that shown in the accompanying il- lustration. This is'a product of the General Ordnance, Co, New York, and embodies several interesting fea- tures. The carriage and gun are steel castings. The gun is designed so that it can be readily removed from the carriage for transportation about THIS GUN IS EQUIPPED WITH A CARRYING THE POWDER PROJECTILE CHARGE