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The Finest Marine Windows Since 1955

Aluminum and bronze are easily fabricated into windows. By the use of extrusions and castings the desired shapes are easily fabricated. However, their physical qualities are limited and certain chemical conditions affect the appearance and operation of these windows. Stainless steel, on the other hand, withstands all conditions and meets the requirements of modern shipping. The metal must be formed into the required shapes by use of a braking mechanism along with other skilled manufacturing procedures.

In the past, only the larger passenger and US Navy vessels could bear the additional cost of stainless steel windows. Our experience in metal manufacturing enables our organization to offer stainless steel windows at a cost almost comparable to windows made of aluminum and bronze by our competitors.

In most cases a weathertight window sufficiently fulfills the requirements of vessels today. The definition of a weathertight window is one that will take almost any degree of gale driven spray or rain without permitting water to get into protected spaces. A weathertight window has been found to be very satisfactory for ordinary wheelhouse and stateroom use which allows a slight degree of leakage when closed. This type of window is designed to collect such leakage and dispose of it.

Weathertight windows are constructed to meet the hose test requirements of the Maritime Administration (30 lbs. of pressure through a 1/2” nozzle at a distance of 25 feet). Under the test slight leaking is allowed, which of course is disposed of by drain pans or scuppers as explained above.

The Cornell-Carr Company will manufacture windows of almost every description with glass either counterbalanced or mechanically controlled, dropping into pockets, horizontal sliding windows, promenade deck windows of all descriptions and public space windows.

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Glass

To meet the necessary conditions required in the manufacture of marine windows, it is important to select the proper type of glass. Following is a description of the various types used: 

Polished Plate Glass is made by grinding and polishing the two surfaces of the glass blank to make them flat and parallel and to provide clear vision with a minimum of distortion. 

It is available in the following thicknesses: 1/4”, 3/8”, 1/2”, 3/4” and 1”. The allowable tolerances are one half of the difference between the size above or below, i.e., unless especially selected, a 14” may range form 3/16” to 5'16”.

Heat Treated Glass is plate glass which has undergone a special process of reheating and rapid cooling resulting in a glass that is 3 to 5 times stronger than plate glass in sustaining loads or resisting strain, about 5 to 7 times more resistant to ordinary impact and disintegrates into small crystals instead of breaking into jagged shards which plate glass would do.

Heat treated glass is widely used in windows, airports, frameless glass doors and other installations where strength and high resistance to temperature changes are required. It is often referred to as “tempered” or “armour-plate”, and is available under the trade names of Tuflex, Securit or Herculite.

Wire Glass. According to U. S. Coast Guard regulations, wire glass is to be used in all passenger ship windows which lead from an enclosed space to areas that are used as passages - for instance, lounge windows leading to a promenade deck enclosure, etc.

Ordinary polished plate wire glass (chicken-wire type) is ordinarily available in thicknesses from 1/4” to 3/4”. The manufacture of thicknesses above 3/8” has been practically discontinued because of its unpleasant appearance.

For use in windows in protected spaces we recommend the use of “Misco” or Nu-weld.” In this type of glass the wire is diamond shape, 3/4” to a side, with wires electrically welded where they cross. The glass has the approval of the Fire Underwriters and is available only in 1/4” thickness. No wire glass can be tempered.

Tinted Glass is a glass of special chemical composition, pale bluish green in color. It absorbs most of the infra-red rays of the sun and reduces sun glare. Some of this absorbed heat is transmitted to the interior, but a considerable portion is given off to the exterior, thereby reducing the solar heat entering through the glass. Tinted glass produces a cooler inside temperature. (Also known as Coolite, Solex, Easyeye or heat-absorbing glass.)

Laminated Glass is composed of two light of glass that have been laminated with an interlayer of transparent plastic by a process involving heat and pressure. When fractured, the particles of glass have a tendency to adhere to the plastic, thereby giving more protection against flying glass fragments. Its use is indicated in areas where breakage or collapse of glass would cause damage or injury. Laminated glass is sometimes referred to as “shatterproof” or “safety glass”, it will fracture under lighter loads than plate glass of the same thickness. Delamination and consequent discoloration are to be considered as possibilities.

Thermopane or Twindow is a factory-fabricated insulating glass unit composed of two or more panes of glass separated by 1/4” or 1/2” of dehydrated captive air, hermetically sealed at the edges in a metal-to-glass bond.

The coefficient of heat transmission is reduced thereby increasing room side surface temperature. The results is a promotion of radiant comfort, a lowering of the dew point and to some degree a deadening of sound transmission.

The thickest light used in the construction of “Thermopane” or "Twindow” determines the strength of the window. 

Fire Rated Glass is designed to withstand the heat of a fire and to prevent the spreading of the fire using special materials. These specialty glazings are framed in steel to provide maximum fire protection.