768 



Popular Science Monthly 



practice is to cover the decks with 

 canvas. The canvas may be laid in 

 glue or wet paint, the former being 

 by far the better method. Procure a can 

 of soft, black marine glue and brush it 

 on the deck with an old stubby paint 



T/LLER _ 

 50CKET\ 



--4 



3- PIECE 

 POST 



Fig. 7. Rudder details 



brush. The glue comes in the form of 

 althick paste, and will be found too stiff 

 to brush evenly, but spread it as evenly 

 as possible. Now lay the fitted canvas 

 in place and with a moderately hot flat 

 iron, iron the canvas until the melted 

 glue sweats through to the surface. Now 

 pull the edges of the canvas over the 

 sides and tack to the edge of sideboards 

 with copper tacks, spaced close to- 

 gether. Tack the inside edge of canvas 

 neatly to the lower edge of coaming. It 

 is better to use a one-piece deck covering, 

 but it may be pieced by lapping one 

 edge over another about an inch, and 

 gluing in place. Do not use tacks 

 anywhere on the deck. 



The row of tacks on the outside edge 

 is covered by screwing on the 2-in. 

 half-round molding which forms a 

 fender-wale. Ta- 

 per this at bow 

 and stern to make 

 aneatappearance. 

 The tacked inside 

 edge is similarly 

 covered by 

 screwing a 3^-in. 

 quarter-round 

 molding around 

 the coaming. On 

 the outside of the 

 coaming, about i8 

 ins. aft of the mid- 

 dle seat, screw an 

 oar-lock block 

 (made of oak or 

 ash), to both the 

 coaming and the 

 deck. 



KNEEi 



DECK BEAM 

 CROWNED l'/{ 



Several types of rudders may be used, 

 but the outside transom form of rudder 

 is preferable to the form using a rubber 

 port. Such a rudder is easily made as 

 shown in Fig. 7. 



{To he concluded) 



Rounding Washers in a Speed Lathe 



ROUNDING the edges of washers in 

 large quantities may be accom- 

 plished on a speed lathe, by means of an 

 arrangement such as shown in the dia- 

 grams. The washer A , V'lg. i , is floated 

 on two pins placed on the face of the 

 piece B, Fig. 2, which is made to fit into 

 the headstock spindle. The central hole 

 in the washer must fit snugly over the 

 pin D. The pin E engages with one of 

 the four other holes, but it need not fit 

 tightly. 



Fastened in a socket held in the tail- 

 stock spindle, is a piece of copper F, 

 Fig. 2, being drilled out to clear the pin 



0^ 



HNEE^ 



Fig. 8. Detail of decking 



Fitting for rounding washers on a lathe 



D. When the washer is in position, the 

 copper end is brought into contact with 

 it, keeping it in place. 



The tool G is used in actually rounding 

 the edges of the washer. Every washer 

 is put on and taken ofT without stopping 

 the machine. Care must be taken that 

 no chips get between the washers and 

 the face of the arbor, since this will 

 make a bevel on one side and ruin the 

 work. — C. Anderson. 



Improving Automobile Springs 



MANY lightly-built cars of the Ford 

 class will ride more easily if the 

 body springs are taken apart and sent 

 to a polishing shop to be polished off. 

 Here they are first given a rough brush- 

 ing with a coarse carborundum wheel, 

 after which they are polished to a bright 

 luster, greased, and colored. After 

 this treatment, the springs should be 

 kept lubricated, and they will be found to 

 work very smoothly. — R. W. Tillotson. 



