US2733031A

US2733031A - Mounting bases for antenna masts

Info

Publication number: US2733031A
Authority: US
Publication date: 1956-01-31
Anticipated expiration: 1973-01-31

Description

a U n r a a l m C: 6. Z M A \zz/AW 7 M \Z a. M W O a 5 w 7 z N 6 M m 0 F 4 a Jan. 31, 1956 c. A. MORGILLO MOUNTING BASES FOR ANTENNA MASTS Filed April 19, 1951 United States Patent MOUNTING BASES FOR ANTENNA MASTS Constantine A. Morgillo, Toledo, Ohio Application April 19, 1951, Serial No. 221,905

2 Claims. (Cl. 248-43) This invention relates to positioning of adjustable clamps.

This invention has utility when incorporated in mountings for antennae, being especially adaptable to many different installing locations.

Referring to the drawings:

Fig. 1 isa diagrammatic disclosure of some of the adaptations of the antennae mounting of the invention for mast support;

Fig. 2 is a side elevation, on an enlarged scale, of an antennae mounting from Fig. 1, adapted to be located astride a building ridge having different pitch roof lines therefrom;

Fig. 3 is a side elevation, on a somewhat reduced scale from the showing in Fig. 2, with the mast mounting tilted from a foot or hinged base, instead of swinging at the clamp as in Fig. 2, and showing how the mounting is adapted for attachment to a flat deck;

Fig. 4 is a plan view of one of the hinged feet or bases, for the mounting;

Fig. 5 is a view looking down on the arch central portion showing the part of the mast clamping element that is welded to said arch; Fig. 5a is a fragmentary section of the hinge mounting of a pair of angle plates, as in Fig. 4, for one of the feet;

Fig. 6 is a side elevation of the supplementary mast clamping section, or rather hinge carried extension for the Weld mounted clamping element section in Fig. 5;

Fig. 7 is a side elevation, with a portion of the arch of the mounting broken away, of the complementary clamping section for adjustment toward the hinged and welded clamping sections of Figs. 5 and 6, the position here being with the clamp V-channels at right angles, as for the mast mounting shown at the left in Fig. 1; and

Fig. 8 is a left side view of Fig. 7.

The building (Fig. 1) has a vertical side wall 1, a gable 2 with 45 roof pitch therefrom. This gable 2 extends back to a fiat deck 3. A 30 roof pitch provides a gable 4 to the deck 3. The gable 4 extends from the building front 5. For further variance in building wall or roof there is a roof 6 (Fig. 2) current in saw tooth roof construction.

Under the invention herein there is adopted a sheet metal main body construction of channel cross-section comprising a web 7 with parallel side flanges 8 (Fig. 5a). In a general arch form there is a pair of converging legs 9 to are portions 10 locating a connecting mast support straight region or top portion 11 (Fig. 2).

Remote from the arc portions 10, the legs 9 have ends 12 with pivot openings 13 therein. Hinge rivets or bolts 14 in these openings 13, assemble, through openings 15 in flanges 16, pivoted foot plates or bases 17 over the ends of the legs 9. These foot plates 17 may have openlugs 18 therein for anchoring means such as screws 19. The symmetrical distribution of the openings 15, 18, in the

angle plates

16, 17, is a factor of convenience in set-up 7 opening for the or assembly, for these plates are interchangeable as rights and lofts for the respective feet of the mounting.

Welds 20 (Fig. 5) anchor an upstanding minor mast or pole clamp element fraction section with the outer face of flat top of the arch region 11 on the web 7 of the channel. This minor clamp section comprises parallel end portions rising to provide ears 21' for hinge rivets 22. There is an intermediate flange 23. The flange 23 is a web portion not so high as the flanges or cars 21, and includes a groove of V-clamp channel 24 in its central portion (Fig. 5), having its seat face portion extending away from the face of the web 23 in the same direction as the end flanges which provide the ears 21.

One of the rivets 22 engages in a flange 25 which flange is part of and extends the full length of a mast or pole clamp extension section having web 26 alignable with webs 23 of the minor clamp section. There is also a medially clamped panel or groove seat 27 between webs 26 for register alignment with the seat or channel 24. Parallel to the flange 25 is a minor length flange 28 parallel to flange 25 for alignment with the other rivet 22 in mounting this clamp extension section. The web 26 for the portion beyond the flange 28 may have a slightly longer reverse direction flange 29, adapted to serve as an end support for a mast 30 when used in the position shown in Fig. 7.

The webs 23 and V-seats 24 of the minor clamp section in its assembly with the major section of webs 26 and clamp seat V portion 27 in alignment with the seat 24, constitute together a half of a clamp, which is complementary with another major clamp section having a plate portion 31 and a complementary V-seat channel 32. The pair of diverging legs 9 with their flange sides 8, the top portion 11 with this clamp half 24 form a rigid assembly base. Openings 33 (Fig. 2) in the minor section webs 23 and openings 34 (Fig. 6) in the Web 26 register with openings 35 in the plate 31 for bolts 36 to effect direct clamping adjustment between the two half clamp sections. However, there is further register for the plate 31 to be shifted to place the channel 32 directly crosswise of the channels 24, 27 (Fig. 7). This makes it possible also to clamp a mast 30 in a direction parallel with the flat region 11 or side of a wall 1 or 5 as shown in Figs. 7 and 1, respectively, by clamping mast 30 between channel seat 35 and against

webs

23, or 23 and 26.

Depending upon the stability to be established by guy lines 37 (Fig. 1), there may be suflicient holding at the four foot plates 17 for stable positioning of the base or mounting. A factor in this stability is the location of the hinge opening 13 spaced from the adjacent end of the

foot

16, 17. This locates the leg lower free end pivot hinge rivet or bolt 14 to transmit load pressure intermediate the length of the

foot plate

16, 17, and considering the bearing connection 14 as a fulcrum, the plate, one way therefrom, say as upward and shorter, may be the heel and the lower longer portion the toe, coacting to hold the loaded foot plate in roof-engaging stable position against rocking of the plate on the. connection. Friction means or pads 38 (Fig. 2) may be used on the feet 17 to anchor against slippage.

The present mounting is adaptable for placing the mast in it after the mounting has been anchored to its support. Also when the mast is mounted therein, the mast may be brought down, as by tilting (Fig. 3), so that an antenna thereon is conveniently accessible for conditioning, changing direction and wiring and then the mast may be swung back into its vertical position.

If the mast is to be tilted at right angles to that possible according to the feet hinge rivets 14, or if the feet of the mounting are already all anchored in place on their supthe mounting for a mast 39 3, port, then the rivets 22 may be used as a hinge for tilting the mast, by releasing the lower bolts 36 through openings 33 in web 23 of the minor clamp section (see Fig. 2). When it is desired to swing the mast up into its desired position, the lower edge of the major clamp section 31 is brought to abut the web 7 of the region 11 and the lower end to abut the webs 23, so that bolts 36 may be replaced through openings 33 and 35 to complete the clamp assembly.

What is claimed and it is Patent is: 1. A mast clamp comprising a fiat base, a pair of parallel ears perpendicular to said base, a first centrally l Jgrooved plate extending between said ears and perpendesired to secure by Letters dicular to said base and said ears, a second centrally grooved plate alignable with said first grooved plate and having a pair of parallel spaced flanges, aligned pivot means connecting said flanges with said ears, a third centrally grooved plate having its groove complementary to the grooves of said first and second plates, and means for attaching said third grooved plate to said second grooved plate for clamping the mast between the complemental grooves.

2. For a spread leg base for an antenna mast having a central flat portion, a fixed clamp portion with a pair of ears fixed with the central portion, a second clamp portion pivoted to said cars, a complementary clamp portion, bolt means for assembling said second and complementary clamp portions in mast holding position, and additional bolt means connectable between said complementary portion and said fixed clamp portion to complete a three-part clamp assembly with a mast.

References Cited in the file of this patent UNITED STATES PATENTS 628,714 Ingersoll July 11, 1899 1,101,984 Barrett June 30, 1914 1,140,582 Dodd May 25, 1915 1,501,998 Hanford July 22, 1924 1,643,689 Woodin Sept. 27, 1927 2,184,533 Danko Dec. 26, 1939 2,439,061 Shur Apr. 6, 1948 2,439,063 Shut Apr. 6, 1948 2,535,283 Groom Dec. 26, 1950 2,542,253 King Feb. 20, 1951 2,576,624 Miller Nov. 27, 1951 FOREIGN PATENTS 13,318 Great Britain 1896 OTHER REFERENCES Oak Ridge Antenna Catalog, page 3, effective date of March 10, 1949. (Copy in Division 51.)