VopuJiir Srirnre Mouthhf 



003 



The sheet metal is curved 

 is supported on the wagon 



Portable Brush Burner Carried 

 on a Truck 



THE accompanying illustration shows 

 a labor-saving device which is used 

 by fruit growers in a western valley. It 

 is a portable brush burner used mostly in 

 young o r- 

 chards where 

 there is less 

 danger of 

 damaging the 

 overhanging 

 branches. In 

 older o r- 

 chards, where 

 J;he trees oc- 

 cupy a larger 

 space, it is 

 customary to 

 gather and 

 haul the 

 brush out of the orchard, to be burned. 

 But this simple brush burner is a labor- 

 saver in the young orchard where little 

 pruning is needed. An ordinary brush 

 pile burned on the ground spoils vegeta- 

 tion and the ashes resulting from the fire 

 have little value if left in a heap. The 

 burner keeps the heat from the ground 

 and the ashes may be strewn where 

 needed. 



It consists of a steel plate bent in a 

 U-shape and supported on a truck with 

 curved angle iron held above tho wood- 

 work by metal braces. It saves hand- 

 ling the brush several times, as the men 

 can throw the brush on to the fire and 

 save two haulings. 



It costs about $2.50 an acre to handle 

 brush with this device, and where a large 

 acreage is to be cleared, this is less than it 

 costs to use a team, and men hauling it 

 out of the orchard. — Earle W. Gage. 



proportions. The holes back of the 

 cartridges are filled with clay and 

 tamped. One stick placed as shown in 

 Fig. 1 will usually be sufficient to bring 

 down a tree of less than l:j in. in diameter, 

 while two sticks placed as shown in PMg. 2 

 will be enoueh for a tree under 19 in. in 



diameter. 

 Three sticks 

 placed as in 

 Fig. 3 will be 

 required for a 

 tree or timber 

 under 23 m., 

 and four 

 sticks placed 

 as in Fig. 4 

 \\\\\ bring 

 down a tree 

 27 in. in di- 

 ameter, or 

 less. The 

 charges should be fired simultaneously, 

 but if firing must be done by time fuse it is 

 often advisable to place one charge and 

 e.xplode it; then place the second charge, 

 and explode it; and so on. 



If a timber is not over 12 in. in diam- 

 eter and no boring tools are at hand it 

 may be readily cut down by encircling it 



to hold the brush and 

 truck with metal pieces 



It's Easy to Blast Trees or Timbers 

 with Dynamite 



IT is a very simple matter to blast al- 

 most any kind of timber work with 

 the aid of dynamite, without danger, if 

 certain simple rules are followed. To 

 blast trees or timbers a charge of i? lb. 

 per square foot of sectional area is placed 

 in holes in the same cross-section, which 

 will be sufficient to cut off trees and 

 round or square timbers of ordinary 



Wood 

 Ff^'4- t^igS pile ^195 



Various methods using ditterent numbers 

 of sticks of dynamite for felling trees 



with a chain of cartridges placed on the 

 same plane as in Fig. 5. The ring must 

 fit snugly against the wood and should be 

 fired with primers on both sides. This 

 method is also effective for piles and 

 trestles under water. The cartridges 

 may be secured to a ring or hoop as 

 shown in Fig. 6 and slipped down into 

 place. — George M. Petersen, 



