Do It With Tools and Machinery 



A device for locat- 

 ing trouble in cylin- 

 ders. It has an in- 

 sulated handle at- 

 tached to a current- 

 carrying chain, the 

 two ends of which 

 are grounded 



The modern car- 

 penter takes his 

 shop to his work. 

 At right is shown a 

 small gasoline en- 

 gine for driving the 

 saw and joiner in 

 a portable shop 



A particularly 

 tough flexible 

 boiler stay-bolt 

 for use in en- 

 gine fire-boxes 



An oil burner for 

 heating the ma- 

 terials when mixing 

 concrete in cold 

 weather. The 

 burner consists of 

 steel pipe with an 

 elliptical cross sec- 

 tion and with a 

 short bend in the 

 lower end to direct 

 the flame. The 

 storage tank is 

 placed on top and 

 holds sufficient for 

 a two days' run 



Each end of the many arms on this shaft is an 

 individual clasp for holding stock to be glued 

 so that many pieces may be done at a time 



534 



A hammer hav- 

 ing a re-enforced 

 handle to reduce 

 the shock of 

 heavy blows. 

 The inner metal 

 portion has a 

 cushioning effect 



