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Timber conservation on the Pacific coast
314
NOTES
AND (_~()MMt~NTS.
eleclrical circttit. Kach leavin K car energizes magnet C to break t e m p o r a r i l y t h e s i g n a l c i r c u i t a t 9 t, p e r m i t t i n g m a g n e t D i n t h e f i r s | r e l a y t o d r o p i t s a r m a l t w e a~M r e v o l v e t h e s w i t c h i n t h e reverse direction.
\Vhen
the same uulnber ot impulses have been
m a ¢ l e o n t h e m a g n e t C" a s o n . t , i h a t is, w h e n a l l t h e c a r s t h a t h a v e e n t e r e ( l t h e b l o c k h a v e l e f t il. t i m s i g n a l s ;ire c l e a r e d a n d the commotions are as shown. The color disks are brought to a n i n d i c a l i n K p o s i t i o n 1)v m a g n e t s l ) a n d o n e i n s h u n t w i t h 1~ n o t shown. : \ no-voltaM-c ~ l m g n e l . n o t s h ( m u , is i n t e r l o c k e d with m a g n e ! ]) in s u c h a n l a n n e r :is t o p r e v e n t a m o t i o n o f t h e a r m a t u r e ~K l h e l a t i e r s h o u h l t h e p o w e r fail w i t h c a r s o n t h e b l o c k . TIMBER CONSERVATION O N T H E P A C I F I C COAST. "['he Pacific Coast hnnber manuf:ict~ir(rs have taken the initiative in an important step for the promotion of proper and conservative use of their timber supply. Practically all of the large manufacturers of lumber in lhc Slales ,ff Oregon and V(ashinglou have entered into an agreement to manufacture odd, as well as even lengths in flooring, finish, and similar planing mill products. ]Ieret(,fore, it has been customary to manufacture these products in even lengths only. Now. it is proposed to trim the manufactured lumber to lengths of odd numbers as well as even numbers of feet. Under the old system, a c(msiderahle portion of the lumber which came 1o the shaping machine was ~xasled and this action has been taken in order to save that waste. (7onsiderable opposition to lhis im~,)\ation has arisen among ret;dlers aim elmstuuers. T h e retailer ccmtends 1hat it is impossihle for him to dispose of odd length material because ~)f the common practice in the construction of wooden buildings, claiming that the initial saving of the manufacturer is transferred to the consumer. This is denied, however, because (~f the prop, wtionally small ,tm~mnt of odd length material which will occur raider the m w system, and because ~)f the latter (lay practice of laying subfloors of rough lumber and sheathing on the sides of the house before putting the finishing lnaterial in pIace. Because of the conservation element which enters into tiffs question, the United States Forest Service has been recommending the adoption of odd leugths for some time past. The P o r t l a n d office of the Service has recenlly made an investigation of the actual amount of unnecessary waste incident to the mamffacture of exeu lengths only, and these figures show that under the old system the refuse b u r n e r consumed about two per cent. of the total amount of the imi)ortant forms of planing mill products which are manufactured from Douglas fir and ~)lher important forest species, in the States of Oregon and Washington. W h e n it is considered that about 75o,ooo,ooo feet of planing mill products are manufactured annually in the two state~ mentioned above, this two per cent. assumes important proportions. T h e Forest Service is authority for the statement that ~5,ooo, ooo board feet of high priced lumber can be saved ;umuallv in Oregon and W a s h i n g t o n by the manufacture of planing mill produc{s into lengths of odd feet as well as even. It would require the yearly growth of timber on approximately 3o,ooo acres of average timber land to produce the amount of lumber which this annual waste represents. The manufacturer is convinced that the waste is unnecessary. His greatest trouble now lies with a similar conviction on the part of the consmner, lhat odd lengths can be used as economically as even lengths.
NOTES
AND (_~()MMt~NTS.
eleclrical circttit. Kach leavin K car energizes magnet C to break t e m p o r a r i l y t h e s i g n a l c i r c u i t a t 9 t, p e r m i t t i n g m a g n e t D i n t h e f i r s | r e l a y t o d r o p i t s a r m a l t w e a~M r e v o l v e t h e s w i t c h i n t h e reverse direction.
\Vhen
the same uulnber ot impulses have been
m a ¢ l e o n t h e m a g n e t C" a s o n . t , i h a t is, w h e n a l l t h e c a r s t h a t h a v e e n t e r e ( l t h e b l o c k h a v e l e f t il. t i m s i g n a l s ;ire c l e a r e d a n d the commotions are as shown. The color disks are brought to a n i n d i c a l i n K p o s i t i o n 1)v m a g n e t s l ) a n d o n e i n s h u n t w i t h 1~ n o t shown. : \ no-voltaM-c ~ l m g n e l . n o t s h ( m u , is i n t e r l o c k e d with m a g n e ! ]) in s u c h a n l a n n e r :is t o p r e v e n t a m o t i o n o f t h e a r m a t u r e ~K l h e l a t i e r s h o u h l t h e p o w e r fail w i t h c a r s o n t h e b l o c k . TIMBER CONSERVATION O N T H E P A C I F I C COAST. "['he Pacific Coast hnnber manuf:ict~ir(rs have taken the initiative in an important step for the promotion of proper and conservative use of their timber supply. Practically all of the large manufacturers of lumber in lhc Slales ,ff Oregon and V(ashinglou have entered into an agreement to manufacture odd, as well as even lengths in flooring, finish, and similar planing mill products. ]Ieret(,fore, it has been customary to manufacture these products in even lengths only. Now. it is proposed to trim the manufactured lumber to lengths of odd numbers as well as even numbers of feet. Under the old system, a c(msiderahle portion of the lumber which came 1o the shaping machine was ~xasled and this action has been taken in order to save that waste. (7onsiderable opposition to lhis im~,)\ation has arisen among ret;dlers aim elmstuuers. T h e retailer ccmtends 1hat it is impossihle for him to dispose of odd length material because ~)f the common practice in the construction of wooden buildings, claiming that the initial saving of the manufacturer is transferred to the consumer. This is denied, however, because (~f the prop, wtionally small ,tm~mnt of odd length material which will occur raider the m w system, and because ~)f the latter (lay practice of laying subfloors of rough lumber and sheathing on the sides of the house before putting the finishing lnaterial in pIace. Because of the conservation element which enters into tiffs question, the United States Forest Service has been recommending the adoption of odd leugths for some time past. The P o r t l a n d office of the Service has recenlly made an investigation of the actual amount of unnecessary waste incident to the mamffacture of exeu lengths only, and these figures show that under the old system the refuse b u r n e r consumed about two per cent. of the total amount of the imi)ortant forms of planing mill products which are manufactured from Douglas fir and ~)lher important forest species, in the States of Oregon and Washington. W h e n it is considered that about 75o,ooo,ooo feet of planing mill products are manufactured annually in the two state~ mentioned above, this two per cent. assumes important proportions. T h e Forest Service is authority for the statement that ~5,ooo, ooo board feet of high priced lumber can be saved ;umuallv in Oregon and W a s h i n g t o n by the manufacture of planing mill produc{s into lengths of odd feet as well as even. It would require the yearly growth of timber on approximately 3o,ooo acres of average timber land to produce the amount of lumber which this annual waste represents. The manufacturer is convinced that the waste is unnecessary. His greatest trouble now lies with a similar conviction on the part of the consmner, lhat odd lengths can be used as economically as even lengths.