For Practical Workers 



To Prevent Bolt from Turning When 

 Unscrewing Nut 



HE bolt 

 will of- 

 ten turn in 

 unscrewing 

 nuts, and 

 should it be 



T 



This file prevents the bolt 

 from turning 



a carriage 

 bolt difficul- 

 ty is often 

 experienced 

 in unscrew- 

 ing the nut 

 at all. 



T he a c- 

 companying 

 illustration shows a very simple method 

 of preventing the bolt from turning, by 

 simply clamping a coarse file over the 

 head of it, as indicated. 



Saw Box 



THE saw box illustrated is one 

 which has proven itself well worth 

 while. In cutting a large number of 

 pieces to the same length it was found 

 that the old-fashioned box soon became 

 inaccurate, due to the contact of the 

 teeth of the saw with the edges of the 

 guides. To obviate this trouble and se- 

 cure a more permanent and serviceable 

 box this one was designed. 



The drawing requires very little ex- 

 planation. Hardwood, preferably maple, 

 is used throughout. The saw is first 

 equipped with the two strips of wood, 

 one on either side. These are bolted 

 on to the saw with two Vl" x 1" stove 

 bolts, heads and nuts set flush to allow 

 the saw to pass between the vertical 

 guides. The holes may be readily 



punched in the saw by means of a good 

 punch. Hold the saw on the end grain 

 of a block of hardwood and keep the 

 holes at least %" from the edge, in 

 order to avoid cracking the saw. 



As the saw will be found a little 

 thicker at the heel than the point, as 

 well as at the teeth, than the back, the 

 boards will have to be dressed down to 

 bring them the same thickness at every 

 point, after they have been bolted on. 

 Be quite certain to take the same 

 amount from each board. 



Next work out the parts for the box 

 and carefully assemble the boards at 

 one end. Place the saw in position and 

 assemble the boards on the other end, 

 being certain that there is just enough 

 play to allow the saw to move freely, 

 but with no shake. A little beeswax or 

 floor wax on all the guides will keep the 

 saw moving freely and easily and will 

 also prevent wear. 



All excellent depth gage can be ar- 

 ranged as suggested in the sketch. A 

 fine tooth saw will give best results. 

 The saw is always available for other 

 work by removing the screws and taking 

 ofif the boards. The holes in no wise in- 

 terfere. 



/a X3'X SAW LENGTH 



This saw box will be found more perma- 

 nent and serviceable than the old-fashioned 

 box 



275 



