US2795642A - Television and radio antenna mast roof mounts and lead-in wire entrance insulators - Google Patents

Description

- 7 June 11, 1957 LE. FRITZING RAD TELEVISION AND LEAD-IN WIRE ENTRANCE INSULATORS' Filed Sept. 22, 1953 I0 ANTENNA MA ROOF MOUNTS AND INVENTOR:

United States Patent TELEVISION AND RADIO ANTENNA MAST ROOF MOUNTS AND LEAD-IN WIRE ENTRANCE 1N- SULATORS Lloyd E. Fritzinger, Tarzana, Calif.

Application September 22, 1953, Serial No. 381,581

2 Claims. (Cl. 174-451) My invention relates to a device or devices 'for supporting a television and/or radio antenna mast and antenna (with or without the use of guy Wires) on the roof of a house or other building having any roof pitch from zero pitch (flat roof) to a 1:1 pitch (angle of 45 to the horizontal) and also for providing entrance of the lead-in wire or wires through the roof structure such that the entrance is waterproof and leakproof and results in little or no diminution of the television and/ or radio signal voltage on the lead-in wire or wires.

These objectives are attained by the device illustrated in the accompanying drawings, in which Figure 1 is a profile view of the combined antenna mast support and lead-in insulator device. This device consists of the base plate 1, the cone 2, the hollow pipe 3 over which and to which is secured the conically flared rain deflector 4 and inside of which is secured the diaphragm 5, which prevents water from flowing down through the pipe 3 into the interior of the building. Water which does enter the top open end of the pipe 3 drains out through the hole 9 just above the diaphragm 5. Threaded holes receive machine screws 11 which secure the antenna mast (dotted outline) in a vertical position inside the pipe 3. The hole 6 receives the sphere 7 of insulating material through which the cylindrical hole 8 passes along the axis of the sphere 7. The base plate 1 and cone 2 (in bold outline) are positioned for installation of the device on a flat roof with the base plate oriented along the horizontal plane AA. The dotted outline of the base plat-e 1 and cone 2 depict the device as oriented :for installation on a roof with a 1:1 pitch or 45 above the horizontal with the plane of the base plate 1 along the line B-B. In any position between AA and B-l3 the base plate 1 of the device will be properly oriented for installation on a roof having that particular angular pitch. The rain deflector 4 always overlaps the top of the cone 2 sufiiciently to provide a watershed thus preventing water from entering into the top open end of the cone 2.

Figure 2 is a plan view of the device as installed on a flat roof, showing the manner of securing the antenna mast (dot-ted outline) in vertical position by means of the screws 11.

Figure 3 is a vertical quarter-section view of the complete assembly showing the antenna mast (dotted outline) secured inside the open end of the pipe 3 by means of the screws '11 and showing the lower end of the pipe 3 passing through a hole in the roof sheathing and secured in a vertical position by means of U-bolts to the rafters and other structural members of the roof frame work. The lead-in insulator sphere 7 is inserted into the hole 6 in the cone 2 and oriented so that the lead-in wire passes up through the cylindrical hole 8 in the sphere 7 at an angle above the horizontal sufiicient to prevent the flow of rain water into the interior of the cone 2. The sphere 7 is distorted from a true spherical shape due to the fact that .the diameter of the hole 6 is less than the diameter of the sphere uncompressed so on the curved plane of intersection of the cone 2 and the sphere 7 the elastic material of the sphere exerts sufiicient pressure against the circumterence of the hole '6 to provide a watertight seal which prevents Water from entering into the interior of the cone 2. Although only one hole 6 is shown, in actual installation of multiple antennas more than one hole 6 could be located on each opposite side of the cone 2, thus providing entrance for lead-in wires from several antennas.

During installation of the device the base plate 1 is integrated with the shingles, tile or other roof materials to provide a watershed making the device leakproof.

What I claim is:

1. A roof-mounted antenna mast support and lead-in wire entrance insulator device for the purpose specified having in combination a hollow upright pipe secured vertically to roof elements provided near the open top end with means of securing an antenna mast in a vertical position inside the upright, provided with a conically shaped rain deflector attached coaxially by watertight means to the upright, and provided internally with a watertight metal diaphragm opposite the connection to the rain defiector with a drain hole through the wall of the upright pipe just above the diaphragm, a trustrum of a hollow metal cone open at its top and bottom ends and encircling the upright pipe, a fiat metal base plate with a hole therein attached to and mating with the lower open end of the cone and encircling the upright'pipe, a hole through the sidewall of the cone which receives securely a universally adjustable spherical insulator having axially located a cylindrical hole through which lead-in wires enter into the interior of the cone and pass down through holes in the roof structure into the interior of the building.

2. A roof-mounted antenna mast support .and lead-in Wire entrance insulator device for the purpose specified having in combination a tubular upright secured in vertical position to roof elements, a conically flared rain deflector attached coaxially and by Watertight means to the tubular upright near its upper end, a watertight diaphram secured inside the upright opposite the point of attachment of the conical rain deflector to the upright, a drain hole through the wall of the tubular upright above the diaphragm, means of securing a tubular antenna mast inside the upper end of the upright above the diaphragm, a frustrurn of a hollow metal cone open at its top end and encircling the tubular upright, with its top end being overlapped sufficiently in any angular position of orientation dependent upon the roof pitch by the conically flared skirt of the rain deflector to prevent water from entering into the interior of the cone, and open at its bottom end and attached by Watertight means to a flat metal plate having a hole therein mating with the open bottom end of the cone through which the tubular upright passes, the fiat metal plate being adjusted to rest upon and be supported by the roof sheathing, a hole in the sidewall of the cone which receives securely a universally adjustable spherical insulator having axially disposed a cylindrical hole through which lead-in wires pass into the interior of the cone and then through the roof sheathing into the interior of the building.

References Cited in the file of this patent UNITED STATES PATENTS 684,736 Wurts Oct. 15, 1901 979,840 Goddard Dec. 27, 1910 1,102,413 Jensen July 7, 1914 FOREIGN PATENTS 54,165 France Dec. 17, 1947

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