Indoor System Employing Two Simple Shades on
Two Non-Recessed Rollers 166
Indoor Three-Sheet, Three-Roller Shade System
(Insealshaid Made by Ark- Tic-Seal
Systems, Inc.) 167
Indoor Five-Sheet Shade (Made by Insulating
Shade Co., Inc.) 168
Indoor, Four-Sheet, Roll-Up, Self-lnflating Shade
(Insulating Curtain Wall) 170
Indoor, Two-Sheet, Two-Roller Shade System
That Can Constitute a Duct That Facilitates
Solar Heating 171
19 INDOOR DEVICES OF OTHER TYPES 172
Curtains That Are Permanently Fixed and Sealed
at Top and Sides and Are Opened by Diagonally
Upward Pulls (Scheme Described by Scully,
Prowler, and Anderson) 173
Curtain-and-Liner That Can Be Slid Horizontally
(Scheme Employing Liner Sold by
Wind-N-Sun Shield, Inc.) 173
Curtains That Are Permanently Affixed and Sealed
to Sides of Window and Can Be Slid Along a
Horizontal Bar at Top and Then Sealed at
Center and Bottom by Means of Magnets
(Scheme Developed by Conservation
Concepts Ltd.) 175
Curtains That Are Permanently Affixed and Sealed
at Sides of Window Frame and Can Be Slid
Along a Horizontal Bar at Top and Can Be
Sealed at Bottom by a Long Heavy Pipe 176
Indoor Shade Held Up by Hooks at the Top 177
Indoor Multi-Cloth-Sheet Shade That Can Be
Collapsed Downward 178
Indoor Quilt That Can Be Accordion-Folded
(Sun Quilt) 178
Indoor Honeycomb- Type Shade That Is Guided
by Vertical Splines and Can Be Hoisted
(Scheme Developed by I. I. Anderson, Ir.) 179
Indoor Device Employing Many Slender Vanes 180
Indoor Device Employing Big, Thick Vanes
(Skylid) 180
Indoor Shutter Employing Two Plates, One of
Which Is Hinged at the Bottom 181
Indoor Shutter Employing a Plate That Is Hinged
at the Bottom and, When Swung Downward,
Forms a Worktable 183
20 DEVICES FOR SPECIAL
APPLICATIONS 184
Outdoor Hinged Reflecting-and-lnsulating Cover
for Sloping Window 185
Indoor Hinged Reflecting-and-lnsulating Plate
for Upper Region of Greenhouse 185