HARDWOOD RECORD 



again, if the extreme of stability is required, 



the cogs are made individually, which is a 



more practicable manner of producing wooden 



ring. The flanges are constructed in the 



persistent, knowing of another tree that was 

 more favorably situated across the line in 

 Kansas. It stood on land belonging to a 

 Leavenworth county farmer, P. W. Gower 

 by name, on a creek which emptied into the 

 Kaw river about twenty-five miles southwest 

 of Kansas City. Mr. Eudrow now deter- 

 mined to make a second attempt, which re- 

 sulted in securing the tree represented in 

 the picture. The matter was brought to the 

 attention of J. H. Verbeck, of Grant City, 

 Mo., and S. F. Prouty, of Des Moines, la., 

 who were the most widely-known and expe- 

 rienced walnut men in the country. They 

 considered it practical and gave it their able 

 and earnest assistance, so that in due time 



the log was delivered to the Union Pacific 

 railroad at the little town of Linwood, and 

 there loaded on a ear, to be soon landed in 

 a conspicuous place in the wonderful dis- 

 play of American woods at the great exposi- 

 tion, as a product and the property of the 

 Sunflower state. 



After the Fair was over, the log was sold 

 to a prominent exporter, and is said to have 

 been made into souvenirs of the Fair, in the 

 form of three-inch cubes, or paper weights, 

 with artistic lettering. This log was pro- 

 nounced by the highest authority the largest 

 16-foot walnut log in the world, and it was 

 without any visible defect. 



J. V. Hamilton. 



Hardwood for Motor Vehicles. 



The introduction of modern motor vehicles 

 was followed by an increased demand for sev- 

 eral articles, such as rubber for tires, wood 

 for various parts and various metals for the 

 mechanism of the machines. 



When motor cars first came out practic- 

 ally all the mechanical portions were con- 

 structed of iron or other metal. Then there 

 came the framework gears, with rawhide 

 cogs, to create a soft running motion and 

 freedom from friction and liability to break- 

 age existing in the common cast iron cog. 

 In order to attain lightness and a certain 

 character of motion, so-called wooden gears 

 were constructed. In practice the wooden 

 gear is generally strengthened by the use of 

 side flanges; one might suppose that a wholly 

 wooden gear is used, but the wooden portion 

 is limited to the cogging. It 'is desirable 

 that the cogs be of very firm wood. In fact. 



some of the hardest and closest-grained spe- 

 cies are used. 



The nature of the design for a cog gear is 

 ex-hibited in Fig. 1. The blank form is cut 

 out from the chosen piece of timber. The 

 marking center is aligned from A to B by 

 means of -the triangle. The center of the 

 point of each cog is fixed and defined with 

 a scratch line. The lines serve as guides for 

 the cutting of the blanks to cog form. A 

 metal flange is clamped on each side of the 

 wooden disk. This flange provides the bore 

 for the hub and therefore the wheel may be 

 geared, set-screwed or keyed on the shaft. 



The cogs are cut in various ways. In some 

 shops the cutting is begun with hand saws, 

 followed up by truing with common band 

 chisels. In other shops the chisel is em- 

 ployed from the start and the cogs are made 

 by a system of chipping and gouging. Then 



^ 



HAKOWOOD ^^^2. 



Lur-,c-,A6F aox 



orainary way, but instead of using a wooden 

 center a metal center is employed as in Fig. 

 2. This metal center is provided with the 

 necessary series of openings to receive the 



