February 10, 1918 



Hardwood Record — Veneer & Panel Sect 



ion 



35 



theae circumstances a comparatively small motor running at high 

 efficiency may be installed to drive all such intermittently-used 

 machines in a group through the intermediary of a short length 

 of shafting. 



The practical panel manufacturer will only consider the appli- 

 cation of electric power if by so doing he can see clearly that he 

 will thereby insure, first, uninterrupted operation, and second, a 

 saving in the cost of production either by increasing the quantity 

 of the product with a given tool equipment, or by a reduction in 

 operating expense. A lot of manufacturers of wood- working 

 machinery now sell their tools provided with proper connections, 

 so that all the user has to do is to arrange for wiring up. Again, 

 machine manufacturers will be glad to co-operate with you. If 

 you do not care to go to what may «eem trouble to have the tests 

 made, which were suggested above, suppose you write to the 

 various manufacturers of the machines you have installed and learn 

 what power is required for each machine. By so doing, allowing 

 a reasonable amount for countershafts, you can very readily ap- 

 proximate whether or not you will save money by changing to 

 electric drive. I have yet to find the first veneer or panel manu- 

 facturer who has regretted changing to electric drive. 



There are many considerations to be taken into account in 

 determining whether it will be more economical to buy current 

 from a central station or to establish a separate plant. While 

 there are strong advocates of both methods, nevertheless, the 

 majority of engineers grant, I believe, that sometimes one and 

 sometimes the other will be more economical. 



If your plant is large enough to warrant the expense I would 

 suggest your employing a consulting engineer. A. T. D. 



Veneer Panels for Airplanes 



Some interesting facts are brought out by an examination of 

 the specifications on w^hich the government has let contracts for 

 3,000 airplanes. 



Each machine requires in its construction 143 veneer panels, 

 all except two being 3-ply, and two are 5-ply. Approximately 

 500 square feet of panels are required for each machine. 



Twenty sizes of panels are used. The longest is 144 inches 

 long, 1 1 Yl inches wide. The largest in area is 72x3 7 inches. The 

 smallest is 60x4 inches. More than half of the panels used in the 

 construction of the airplane are 60x4 inches. They are the wing 

 ribs. The largest panels are used in the equalizers. 



These panels are all made of mahogany fronts and backs, but 

 the cores or cross-pieces inside may be of yellow^ poplar. 



Panels of a width under fifteen inches must be in one piece; but 

 those of greater width may be jointed in proportion of the wdths 

 as compared with fifteen inches. Where crossbanding is jointed, 

 the edges must be butted and jointed the same as for face work. 



These panels may be glued up in stock of greater widths than 

 specified, but so as to produce the widths required, and may be 

 shipped without cutting. 



The panels are required to be made with water-proof glue or 

 high grade hide glue. 



The total number of panels called for in the contract for 3,000 

 airplanes is 439,000, and of these 4.500 are 5-ply. the others are 

 3-ply. On the basis of 500 square feet of panels to the machine, 

 the total for the whole order is 1,500,000 square feet. 



The Roddis Lumber & Veneer Company, Marshfield, Wis., has 

 accepted a $50,000 order from the French Government for veneer 

 material to be used in the construction of aircraft. Work on the 

 order is now under w^ay. 



Reports presented at the annual meeting of stockholders of 

 the Medford Veneer Company. Medford, Wis., showed that while 

 operations in 1917 were only fairly profitable, prospects for 1918 

 were more encouraging as arrangements have been concluded for 

 a more ample supply of logs. All officers were re-elected. 



PERKINS 



GLUE 

 COMPANY 



SOLE MANUFACTURERS 

 AND SELLING AGENTS 



PERKINS 

 Vegetable Veneer Glue 



(PATENTED JCLY 2. 1912) 



805 J. M. S. BUILDING 

 SOUTH BEND, INDIANA 



TheDean - Spicker Co. 



Manufacturers of 



Oak —Mahogany —Walnut 



AND 



LUMBER 



22nd St. and So. Crawford Ave. 

 CHICAGO 



All Three of U. Will Be Benefitea if You Mention HARDWOOD RECORD 



