48 



Hardwood Record — Veneer & Panel Section 



August 10. 192! 



Beautiful Birch 



ROTARY CUT VENEERS 



There is no better Hircli grown than that found on our 

 Timber Holdings. Sciui us a trial order for a crate or a 

 carload, and wc arc conluk-nt you will forward repeaters 

 without solicitation. Quality considered, you will find 

 our prices icasoiiablo. 



Bissell Lumber Company 



Mills: 

 IRIPOLI, WIS. 



Address Uept. 3 

 MARSHFIELD, WIS. 



Rotary Cut 



Northern 

 Veneers 



Members of 

 Maple Floorlno 

 Manufacturers" 

 Assoclatisn 



"PURNITURE manufacturers and factory buyers who insist on 

 " having high quality veneers should send us their orders. W« 

 are specialists in Northern Veneers. 



We also manufacture Northern Pine, Spruce, Hemlock. Cedar 

 Posts and Poles, Lath and Shingles, which we ship in straight 

 cars and cargoes or mixed with our ''Peerless Brand" Rock 

 Maple, Beech or Birch Flooring, (jct Otir Prices 



The Northwestern Cooperage & Lumber Company 



Chicago Offices: 812 Monadnock Block 



GLADSTONE, MICH. 



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RANGOON TEAK 



B B T C L 



British Honduras Mahogany 



B. E. & P. CO. 



SPOT and SHIPMENT 



QUALITY AND SERVICE 



BUSK & DANIELS, 8 Broadway, NEW YORK 



opened and closed quickly, and which would not allow so large a 

 volume of warm air to escape when open, a large part of this 

 loss could be averted. It might also result in closer supervision, 

 for an operator would feel more like running into a kiln if he did 

 not have to n-.ove a big, cumbersome door every time he wanted 

 to enter. 



Every kiln should have a steam-trap in the return line, to allow 

 the condensation to run back and at the same time keep the steam 

 from blowing through. Even though a trap is installed, there does 

 not seem to be any way of making sure that it is working properly 

 at all times. Instances could be cited where the trap was permitting 

 practically a full head of steam to flow past. Again, the globe 

 valves on the by-pass pipes may not seat properly, permitting 

 steam to escape. Such irregularities can account for a large 

 amount of steam in the run of a day, often as much as 50 per 

 cent of the total requirements of the kiln. It is not sufficient that 



such installations be made the steam-trap and by-pass valves 



should be inspected often, to make certain that they are functioning 

 properly, and a record chart kept. Daily tests are best, but at 

 least a thorough inspection should be made once a week. If steam 

 is worth .anything at all, it is worth conserving and utilizing to 

 the utmost. 



Some one may ask how they can check up and ascertain whether 

 their kiln is on an economical as well as efficient basis. This is a 

 very difficult question to answer. They will probably have to 

 consult a dry kiln expert or a practical steam engineer and find out 

 how much steam is required to maintain a certain temperature in 

 a kiln of a certain size, with so many feet of pipe installed, using 

 live or exhaust steam at such and such a pressure. Such a problem 

 is not so difficult for a practical steam engineer. When the 

 amount ot steam required is known, it simply resolves itself into 

 a case of determining how much steam is being fed to the kiln. 

 This can only be accomplished by metering the flow of steam 

 being fed to the kiln or checking up the steam consumption 

 through the process of elimination. There are a number of 

 practical meters on the market for this purpose. 



If steam is worth $1.75 per 1,000 lbs., it is worth while being 

 sure that it is all being utilized. How much steam is your kiln 

 wasting? 



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 may set his valves and secure the drying conditions he has in 

 mind, only to find, a few hours later, that a change in outside 

 temperature or a change in the direction or velocity of the wind 

 has upset all his calculations. A kiln, to give satisfactory, uniform 

 results, should at all times be under direct control of the operator. 

 This can only be secured when it is entirely independent of outside 

 conditions. Needltss to say, such conditions do not obtain when 

 light or poorly-fitting doors are used. 



While on the subject of kiln doors, have you provided a smaller 

 door into each compartment, for the use of the operator? To 

 operate a kiln with any certainty of success, the operator must 

 know the condition of the stock and conditions in the kiln at all 

 times, and this means frequent trips into the kiln. If, every time 

 the operator wants to go into a compartment, he must open the 

 large door, think of the amount of heat which escapes each time 

 it is opened. If a small door were provided, one that could be 



Plywood Is Chief Material Used in British 

 Flying Boat 



The description of an all-wood hydro-aeroplane, recently car- 

 ried in the Manchester (England) Guardian Commercial, is of 

 interest here because of the fact that a plywood, known in England 

 as consuta plywood, was the chief material entering into the con- 

 struction of the flying boat. This plywood was used for the fuse- 

 lage, hull and wings, no fabric having been employed in the con- 

 struction of the boat. That this construction is a success has 

 already been demonstrated in private trials by the makers, S. E. 

 Saunders & Company, Ltd., East Cowes. The machine is a large 

 one with a wing spread of 68 ft. 3 in., and is capable of a speed of 

 42 to 110 miles. It is regarded as a good vehicle for trips between 

 various towns along the coast of England as well as between 

 British ports and cities on the Continent. The boat is amphibian in 

 that it can ascend and light with equal facility on land or water. 

 The following is a description of the plywood used in the construc- 

 tion of the machine: 



"The consuta plywood has developed from the copper-sewn 

 methods of boat construction. Messrs. Saunders have used it for 

 twenty years in motor-boats, life-boats, and boats of all descriptions. 

 The plywood is made up of layers, arranged with the grain non- 

 parallel, cemented together, and then lockstitched. The stitches 

 run lengthways in rows of 1 '/^-inch pitch, and may be counter- 

 sunk, so that a smooth exterior is possible. It is manufactured in 

 sheets 8 feet wide and up to 60 feet long, and in thicknesses from 

 one-eighth up to five-eighths. 



