Report ..., المجلدات 9-17

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Foundation supported on wooden blocks
20
Short hemlock piled on doublelength foundations
21
Width and spacing of lumber piles
22
Short hemlock piled two endlapped lengths to pile 22 11 Short hemlock piled two endlapped lengths to pile 12 Good and poor care of stickers
23
Power lumber piler or elevator
26
Airline piling under monorail 27 14 Airline piling under monorail 15 Portable horse used in piling unit packages
28
Sling used for lifting unit packages by cable
29
Straddle lumber tractor
30
Elevated tramcar helps in piling lumber 31 18 Elevated tramcar helps in piling lumber 19 Improved jack for elevating lumber to top of pile
32
Pile stickers and chimneys or tunnels and spacing between boards
36
Simple sticker spacing frame
37
Diagram of arrangement of tiers in box piling
39
Side piling
42
Yard alleys showing common form of pile roofs 42 22 Yard alleys showing common form of pile roofs 23 Cross section of sidepiled lumber pile
43
Pile shield for end of pile of 3inch cypress
45
Pole stacking for reduction of bluestain damage
46
Defects produced in lumber by air seasoning
48
Samples showing checking and honeycombing
49
Section of oak plank showing severe honeycomb
50
End checking in a cross section of western larch
51
Partly airdried pile of thick oak with severe end check
52
Warped lumber produced by crooked sticker course_
53
Period required for adequate airdrying of lumber
54
Drying rate chart for Douglas fir
55
Method of piling railroad ties known as 71 or 81
59
Roundedged lumber piled for airdrying
60
Bundle dimension stacked for airdrying outdoors
61
Squares shed piled with ends butted to reduce end check
62
Dimension in large stacks end lapped 40 Short lumber piled herringbone fashion without stickers
64
Airseasoning yard for stave bolts_
65
Proper piling of squares to reduce surface check
66
Airdrying of smalldimension stock
67
Conventionalized longitudinal section of progressive kiln
69
Sorting of mill product for drying in progressive kilns
73
Kiln load piled with narrow vertical vents
78
Kiln load piled with liberal vertical air vents
79
Compartment kilns for sawmill kilndrying
80
Convenient form of control chart for progressive kilns
81
Conventionalized cross section of compartment kiln
83
Edgestacked kiln load collapsed by shrinkage in kiln
89
Study of two kinds of spacing between boards
90
Use of form for shaping chimney in kiln load
91
Completed load piled with use of tunnel form
92
Piling of lumber for kilndrying
93
Kiln load piled with vertical through chimney
94
Chart of equilibrium moisture content in wood
118
Kilndrying in a vacuum
121
Bibliography of lumber seasoning handling and care for the lumber
124
Chair
67
42
45
45
52
Foreword
v
Page
2
Manufacturing practice 28
28
Inspection 34
34
Storage before shipment ii 41
41
Storing kiln dried small dimension stock 42
42
Kilndried dimension should be well protected during ship 21 Cross sections of a nonporous diffusedporous and ring porous wood 45
45
A moisture gradient curve 46
46
Good and bad practice in piling small dimension stock 47
47
Good piling but poor practice 48
48
The theory of drying 45 The theory of drying
49
Piling stock which has been treated to prevent stain 50
50
Kiln drying 55
55
Piling small dimension stock for kiln drying 56
56
Casehardening tests 64
63
Moisture distribution tests 65
65
Estimated consumption of lumber by industries which use small dimen sion stock1925
72
tant hardwood consuming industries 73
73
Leading sizes of rough cuttings and their consumption by nine impor 5 Leading sizes of rough cuttings consumed by the furniture industry 74
74
Leading sizes of rough cuttings consumed by the implement and vehicle industry
75
Leading sizes of rough cuttings consumed by the railway car industry
9
Leading sizes of rough cuttings consumed by the commercial fixture
10
industry
12
Present sawmill machinery unsuitable for converting small timber
1
Scandinavian gang saws 7
7
Output 14
14
Figure Page
4
Leading sizes of rough cuttings consumed by the refrigerator industry
11
Leading sizes of rough cuttings consumed by the kitchen cabinet
12
Diagram showing one method of cutting lumber with gang saw 13
13
124
27
Sconce
28
Clothes drier
34
industry
45
34
48
III
49
Leading sizes of rough cuttings consumed by the musical instrument
13
Range of sizes of squares used by the woodturning industry
14

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عبارات ومصطلحات مألوفة

مقاطع مشهورة

الصفحة 6 - Board, and the Bureau of Foreign and Domestic Commerce of the Department of Commerce.
الصفحة 38 - US DEPARTMENT OF AGRICULTURE. Forest Service. 1920. Timber depletion and the answer. A summary of the report on timber depletion and related subjects prepared in response to Senate Resolution 311. US Dept.
الصفحة 116 - Manual of Design and Installation of the Forest Service Water-Spray Dry Kiln. By LV Teesdale. Department of Agriculture Bulletin 894, October 18. 1920. Price, 10 cents. A good manual for this type of kiln. The Theory of Drying and its Application to the New Humidity Regulated and Recii-culating Dry Kiln.
الصفحة 62 - Portland cement concrete finish of an arc of at least 2 inches in length. The ends of wooden beams or girders entering masonry or concrete shall not be sealed in but shall be provided with boxes affording an air space at the end of the piece of not less than 1 inch at side of member, unless the ends of such timbers are impregnated with coal-tar creosote or other approved preservative. Where there are spaces under floors near the earth, they shall be excavated so that there will be no earth within...
الصفحة 8 - DC, works in close cooperation with a number of official and private organizations, notably the Bureau of Standards of the Department of Commerce and the Forest Products Laboratory of the Forest Service, Department of Agriculture.
الصفحة 49 - Commerce, comprises about 200 members representing manufacturers, distributors, and consumers of forest products. Its object Is to work for closer utilization of our country's timber resources. The committee, whose headquarters are in the Department of Commerce. Washington, DC, works in close cooperation with a number of...

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