Mounting bracket
A mounting bracket for securing a camera or other device to a hollow pole includes an L-shaped member, attached to the device, with a vertical surface that engages the outer surface of the pole and a horizontal surface that rests on the top surface of the pole while a downwardly-projecting member slides into the top of the pole allowing the device to hang stably on the pole during alignment. A bolt passes axially through the downwardly projecting member and engages a gripping member. The downwardly-projecting member and gripping member have mating surfaces inclined relative to the axis of the bolt, so that when the bolt is tightened, the gripping member slides laterally to engage against the inner surface of the pole. A cover plate engages the outer surface of the opposite side of the pole and is secured to the L-shaped to fully secure the assembly.
1. A bracket for mounting a device to a hollow pole comprising:
a first generally L-shaped structural member, wherein the short leg rests horizontally on the open end of a hollow pole and the long leg extends downwardly along the outer surface of said pole and wherein:
said long leg has an inner surface to engage said pole and an outer surface upon which a device may be mounted;
said short leg has a bearing surface to rest stably upon the top of said pole, and further comprises a downwardly projecting member that extends a selected distance into the interior of said hollow pole, and terminates in a flat surface that is inclined at a selected angle with respect to the axis of said pole; and,
a hole running completely through said downwardly-projecting member parallel to the axis of said pole;
an internal gripping member having a hole therethrough and an inclined surface to slidably engage against said downwardly projecting member so that when a bolt is passed through said downwardly-projecting member and into said gripping member, and said bolt is tightened, said gripping member slides horizontally and both said downwardly projecting member and said gripping member engage the inner surface of said pole and secure said L-shaped member thereto; and,
a cover plate having an inner surface to engage the outer surface of said pole opposite said long leg; and,
a means of securing said cover plate to said long leg.
2. The bracket of claim 1 wherein said cover plate and said long leg compressively engage a portion of the outer surface of said pole when said cover plate is secured.
3. The bracket of claim 1 wherein said long leg extends along the length of said pole by a distance at least equal to the diameter of said pole.
4. A method for mounting a device to a hollow pole comprising the steps of:
a) attaching a device to a first generally L-shaped structural member, said structural member having a short leg to rest horizontally on top of a hollow pole and a long leg to extend downwardly along the outer surface of said pole and wherein:
said long leg has an inner surface to engage said pole and an outer surface upon which said device is attached;
said short leg has a bottom surface to rest stably upon the top of said pole, and further comprises a downwardly projecting member that extends a selected distance into the interior of said hollow pole, and terminates in a flat surface that is inclined at a selected angle with respect to the axis of said pole; and,
a hole running completely through said downwardly-projecting member parallel to the axis of said pole;
b) loosely bolting an internal gripping member to said downwardly projecting member, wherein said gripping member has an inclined surface to slidably engage against said downwardly projecting member so that when said bolt is tightened, said gripping member slides horizontally and both the downwardly projecting member and the gripping member engage the inner surface of said pole and secure the L-shaped member thereto;
c) resting said short leg of said L-shaped member on the top of said pole with the horizontal surface supporting the weight of said device;
d) adjusting the position of said device by rotating the assembly about the axis of said pole;
e) tightening the bolt on said gripping member until said gripping member securely engages the inside surface of said pole; and,
f) placing a cover plate against the outer surface of said pole opposite said L-shaped member and securing it thereto.