11 terms starting with T.
T
- Take-Up Reel
See “Retractable Reel”.
- Tambour
A curtain of slats that move within a cabinet that can be locked. An example of this would be a roll top desk.
- Tension Shaft
Located opposite the drive shaft on the barrel assembly. Attached to spring counterbalance assembly and charging wheel to add tension to spring.
- Tension Wheel
See “Charging Wheel”.
- Thumb Turn Lock
Thumb turns are required by fire laws in many areas. This non-removable key-like knob fixed to a cylinder is used as an alternative to a keyed cylinder. Requires a protective cup and security pattern on grilles to prevent unauthorized entry.
- Top & Bottom Locking Post
A lead or end post can be a top & bottom locking post. A spring-loaded drop bolt engages a floor socket and a top lift bolt protrudes into track and header.
- Top Cover
A Mini Roll-Up term. Refers to the top of the hood that covers the axle and end caps.
- Torsion Spring
A helical wound spring mounted inside the barrel used to counterbalance rolling grilles/closures.
- Track
Extruded aluminum 1 3/8″ (35mm) wide by 1 5/8″ (14mm) high. Track is joined together with hardened steel track pins (like model railroad tracks) and alignment bars constructing a smooth continuous surface for the trolleys to carry the curtain.
- Traveling End Post
Last post of the curtain that travels to the front of the pocket when curtain is extended across opening. The post’s top stop self locks into a header stopper and a floor “V” stop inside of pocket. A full height (maximum 10′ (3000mm)) Protection Plate is attached to back of the traveling end post.
- Trolley
Dual 1 1/8″ (28mm) nylon wheels spaced to ride in track. The trolleys support the full weight of the curtain. Also referred to as Rollers.
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