Document ID: chunk:federal_register_of_legislation:F2020L01271:reg:7:p12
Version: federal_register_of_legislation:F2020L01271
Segment Type: reg
Provision Reference: reg 7 (pt 12/16)
Character Range: 182730–185607

England in 1824 and is often described as 'near Birmingham'. The business was absorbed into the Pilkington group of companies in 1951 and now ceases to exist. It is believed that Chance Bros supplied Cape Byron Lighthouse's lantern roof, glazing and base, and the internal and external catwalk.

 E

Electric bells
 A bell activated by the magnetic effect of an electric current. They were used for telephonic communications without the need of contact breakers and could be utilised for long service.

External catwalk
 A landing around the external face of the tower complete with hand rail. Cape Byron Lighthouse's external catwalk is composed of cast iron lattice  floor panels supported on openwork cast iron brackets bolted to lantern base with modern socket- head bolts.

 H

Henry-Lepaute
 Renowned French watchmaker and mechanician prevalent throughout the early to mid 19th century. His optic lens mechanism is found within Cape Byron Lighthouse.

 I

Incandescent kerosene
 A light fuel once utilised by lighthouses to ignite   and fuel the lantern. Cape Byron Lighthouse used kerosene to fuel its lantern before its introduction to electricity.

Intermediate floors
 Levels found mid-way up a building. Cape Byron Lighthouse's intermediate floors are found in its tower and are composed of reinforced concrete, topping of square black and white ceramic tiles, rendered on other surfaces.

Internal catwalk
 An open landing inside the tower complete with handrail. Cape Byron Lighthouse's internal catwalk is composed of cast iron lattice floor panels supported on solid cast iron brackets bolted to lantern base.

 L

Lantern floor
 The level in a lighthouse at which the lantern is installed, and by which access may be gained to the optical system and to the inside and outside of the lantern glazing. The lantern floor is generally at or near the same level as the catwalk and cane be made from steel, concrete, or timber.

Lantern glazing
 The middle section of the lantern, circular or polygonal in plan, between the lantern roof above and the lantern base below, made up of glass panes held in a framework of glazing bars. On the landward side there may be blank panels in place of glass, or other opaque construction. Types of lantern glazing include: flat and curved trapezoidal panes and curved diamond/triangular panes. Cape Byron uses curved rectangular panes.

Lantern roof
 The roof of the lantern. Usually made of copper sheeting over a framework of rafters.

Lens assembly
 A transparent optically refracting element of glass. The surface is usually spherical in form.

Light source
 Electric lamps and LEDs now illuminate most
 lighthouses.

Lighthouse
 The principal structure of a lightstation, generally made up of a lantern, balcony and tower.

Lightstation
 A precinct containing a lighthouse structure and other related buildings, for