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Sheet metal drafting layout pattern hvac tools pexto
Sheet metal drafting layout pattern hvac tools pexto
"Air Conditioning METAL LAYOUT
With Practical and Shortened Methods
for Laying Out and Forming the Patterns Used in Air Conditioning, Heating, and Ventilating
Mathematical Formulas Applied to Sheet Metal Work "
A CLASSIC work for the HVAC trade
Great pattern examples to help you get the most out of your old Pexto, Niagra, or Di-Acro sheet metal equipment
Condition: good, minor shelfwear, previous owner's name on verso.
4. Riveted Corner Seam With the Lap on the Outside
5. Riveted Corner Seam With the Lap on the Inside
8. Pittsburgh Corner Lock Seam
13. 90-Deg. Elbow With Square Back and Throat
14. 90-Deg. Elbow With Square Throat and Curved Back
15. 90-Deg. Elbow With Curved Throat and Back
21. 45-Deg. Angle With Square Back and Throat
25. Two-Way Y Branch, With a 60- and a 30-Deg. Branch
27. Three-Way Y Branch – One at a 60 Deg.
28. Two-Way Y Branch Both on a 45-Deg. Angle
29. 90-Deg. T With Clinch Edges on the Cheeks, Throat, and Heel
30. 90-Deg. T With S Edges on the Cheeks, and Clinch Edges on the Heel and Throat
31. T on a Pitch With Clinch Edges on the Throat, Heel, and Cheeks
32. Register Box T With Clinch Edges
33. Register Box on a Pitch, With S Edges on the Cheek Patterns
35. 90-Deg. T With Flanged Riveting Edges
36. 90-Deg. T With Curved Clinch Edges Fastened to the T by Means of a Pittsburgh Lock
37. 135-Deg. Elbow or Gooseneck Elbow
40. 90-Deg. Elbow With Curved Vanes
41. 90-Deg. Square Throat and Heel Elbow With Vanes
42. 90-Deg. Change Elbow With Vanes
43. 90-Deg. Standing Seam Gore Elbow
45. Transition Joint With Three Sides Straight
46. Transition Joint With Two Sides Straight
47. Transition Joint With the Top Flat or One Side Straight
48. A Transition Joint With All Sides Tapering
49. Transformer With Center Splitter
50. Offset With a Square Throat and Back
52. Plain Offset With Curved Back
57. Tapering Transition Offset
59. Transition Offset With Two Straight Sides
60. Transition Offset With One Curved Side
61. Y Branch and Offset Combined
66. Square to Round With Two Sides Straight
67. Rectangular to Round Off Center
68. Rectangular to Round on a Pitch
70. Irregular Twisted, Square to Square
73. Transition Elbow With a Center Splitter
74. 90-Deg. Change Transition Elbow
75. 90-Deg. Change Transition Elbow
76. Transition With a Center Splitter
77. 90-Deg. Change Transition Elbow
78. 90-Deg. Change Transition Offset Elbow
79. Change Transition Elbow With a Center Splitter
80. 90-Deg. Change Transition Elbow With a Straight Flat Throat
81. 45-Deg. Change Transition Angle
82. 60-Deg. Change Transition Offset Angle
92. Transition Joint, Changing from 4 to 5 Sides
93. 5-Sided Transitional Joint
95. Rectangular to Triangular Transition Joint
96. Twisted Transition Offset Pipe
98. Round Two-Piece 45-Deg. Angle
99. Three-Piece Round 90-Deg. Elbow
100. Round Four-Piece 90 Deg. Riveted Elbow
102. Rectangular T Intersecting a Round Pipe on Center
103. Square T Intersecting a Round Pipe Off Center
104. Rectangular T Intersecting a Round Pipe at a 45-Deg. Angle on Center
105. Rectangular T Intersecting a Round Pipe at a 60-Deg. Angle off Center
106. Square T Intersecting a Round Pipe at a Quarter Turn
107. Square T Intersecting a Round Pipe at a Quarter Turn on a 60-Deg. Angle
108. Round T Intersecting a Round Pipe at a 90-Deg. Angle
109. Round T Intersecting a Round Pipe at a 90-Deg. Angle Off Center
110. Round T Intersecting a Round Pipe at a 45-Deg. Angle On Center
111. Round T Intersecting a Square Pipe at 90-Deg. Angle Centered on a Corner
112. Round T Intersecting a Rectangular Pipe at a 90-Deg. Angle Off Center on a Corner
113. Round T Intersecting a Rectangular Pipe at a 45-Deg. Angle Centered on a Corner
114. Round T Intersecting a Rectangular Pipe on a 45-Deg. Angle Off Center at the Corner
115. Square to Round Hood With Flat Sides
118. Rectangular Discharge Exhaust Hood or Cap
120. Range Canopy With One Corner Cut Off Vertically on a 45-Deg. Angle
122. 90-Deg. Square-to-Round Elbow
127. A Rectangular Transition Elbow
128. Two-in-One Elbow With Mitered Heel
129. Transition Elbow With Two Throat Curves
130. Two-in-One Elbow With Curved Heel
132. Double Offset With All Sides Curved
134. Double Offset With All Sides Curved
135. 45-Deg. Irregular Shaped Change Elbow
137. Square-to-Oblong Twisted Angle Fitting
138. Rectangular-to-Square Elbow Twisted One Quarter Turn139. Rectangular-to-Square Elbow Twisted One Quarter Turn
141. Flat Clinch-Edge Access Door
144. Celotex- or Wood-Filled Access Door
147. Fresh-Air Intake With Stationary Louvers
149. Laying Out the Top Pattern for Housing No. 1
150. Side Pattern for Housing No. 1 and Reheating-Coil Casing
151. Bottom Pattern for Housing No. 1
152. Laying Out Slitter Pattern
153. Top and Bottom Patterns for Housing No. 2
154. Side Pattern for Housing No. 2
155. Patterns for a Square to Round in Eight Pieces
156. Housing No. 4 and Tempering Coil Casing
158. Short Mathematical Rules Used in Laying Out Sheet-metal Patterns
159. Finding the Length of the Heel Curve Stretch-Out for a Change Elbow
160. Pattern for Making a Rectangular Joint of Pipe
161. Patterns for 26 by 30-in Rectangular Pipe
162. Patterns for a 20 by 30-in Pipe
164. To find the distance between the base of the frustum of the cone, and the point of intersection at A, shown in Fig. 1
165. To find the amount of metal to be cut from the flat pattern or the circle which represents the flat pattern, for a cone-shaped hood or stack-cap
166. To find the amount of metal to be cut from the flat pattern for a conical cap or cone by the use of degrees
167. Finding the centers from which to draw throat and heel curves on a plain offset.
168. Methods of finding lengths of radii for drawing the throat and heel curves on a change offset
169. To find the amount of metal to be mitered from a joint of pipe to be used as an offset
170. To find the fourth dimension for a transition joint when three of the dimensions for the openings are given, as shown in Figure 1
171. To find the size of a square outlet which would have the same area as a given rectangular inlet
Circumferences and Area of Circles
Stretch-Out or Circumference of the Heel and Throat Curves for 90-Deg. Elbows
Decimal Equivalents of One Inch
Gauges for Sheet Metal and Wire
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Temporary Email: L.Ball@dontscrapit.com (Lidia Ball)
