US2431610A - Mast - Google Patents

Description

Nov. 25, 1947. H. COHEN 2,431,610

l MAS-T Filed April 10, 1945 @fn/eases -i BY l Patented Nov. 25,y 1947 ammo;

UNITED STATES PATENT OFFICE lMAST `Harold Cohen, Elizabeth, N. J.

Application April 10, 1945, Serial No. 587 ,499

(Cl. 18S-25) 3 Claims.

This invention relates` to va structure in the form of a mast, pole or tower.

An object of the present invention is the provision of a structure of the indicated character embodying improvements in construction whereby the structure will havethenecessary strength and rigidity in order that it Amay be raised or: erected from a horizontal to a vertical position.

A further object is the provision of a structure of the character mentioned which is not only strong and rigid, but which is light in weight and `oifers a minimum resistance to the wind considering the size of the structure.

The invention also resides in the simplicity of the construction of a mast or tower, the economy with which it may be produced and the general benefits derived therefrom.

The nature of the invention and its distinguishin-g features and advantages will appear when the following spec'ication is read in conjunction with the accompanying drawing, in which- Fig. 1 is a fragmentary side elevational View of a mast or tower embodying the features of the invention, portions being shown in section.

Fig. 2 is an enlarged horizontal sectional view taken on the line 2 2 of Fig. 1.

Figs. 3, 4 and 5 are detail vertical sectional views taken on the respective lines 3 3, 4--4 and 55.

Referring now to Fig. 1 of the drawing, it will be apparent that the mast or tower, generally stated, consists of similar sections Ill joined in end-to-end relation. Each of the sections I0 consists of leg members or uprights II, spanners or transverse members I2 secured to said members II near the ends, respectively, of the section, and spanners or cross-ties I3 secured to said members II intermediate the ends, to retain said members II in spaced relation to each other.

The leg members or uprights II may be of wood or metal, and are preferably in the form of metal tubes of suitable length, as shown in the present instance.

The spanners I2 are circular or annular, or in other words, the spanners I2 consist of rings of similar shape in cross-section, and of equal diameter in the present case. Each spanner I2 is of hollow construction, and is round in crosssection. The Spanner has alined -holes I4 arranged in pairs, and the pairs are spaced equally with respect to each other. There are twelve pairs of holes I4 in each spanner I2 in the present instance. Obviously, more or less pairs may be provided according to the number of leg or up-A V cros'swise with respect to each other. fsp'anner I2 also has connected therewith a plul II has a tubular splice I9 welded thereto.

right members `II desired for strength and rigidity. Cross braces I5 are welded at their ends to thespanner I2, said braces i5 are disposed diametrically with respect to Spanner and Each rality of U-bolts I6. Suitable washers I'I are arranged on the ends of each bolt I6 between the Spanner and the nuts I8.

The intermediate spanners I3 are similar to 'the spanners I2, except that the spanners I3 do lnot carry anyU-bolts. Features of the spanneis :I3 similar -to those of spanner's I2 are given c'orresponding refer-ence numerals.

The lower end of each leg member or uprigllt e splice surrounds said member II for one-half the length of the splice leaving the other half to provide a socket for the upper end of a second leg member II, so that the leg members may be joined in pairs.

The parts of a section or unit ID are assembled as follows. The required number of leg members or uprights II are severally extended through pairs of the holes I4 in a plurality of the spanners I3, which are disposed intermediate the ends of the members II, and welded thereto in spaced relation. The members II are also extended in the holes I4 of two spanners I2 which are disposed near the opposite ends, respectively, of the section or unit I0 providing an upper and a lower Spanner I2 for each section I. The spanners are welded to the members Il, the lower spanner I2 of the section IB abutting the splioes I9. Braces 20 in the form of rods or lengths of cable, as shown in the present instance, are connected with the U bolts I6 on the spanners i2 so as to be disposed diagonally. The nuts I8 may be vadjusted to draw the U-bolts to tighten the braces 20.

The completed sections or units I0 are rigidly joined to each other end-to-end or in superimposed relation and the members I I of the sections It! in longitudinal alinement with each other as follows. The upper ends of the members II of one section Il] are projected into the splices IS of a second section or unit. Suitable fastening elements, such as the bolts 2l, are employed in conjunction with the opposing spanners I2 of two sections I0 to securely draw them toward each other. The bolts 2| extend loosely through said spanners I2 which have holes therein for that purpose. Each bolt 2l has an adjustable nut 22 and washers 23 .on the bolt conform to and bear QH the Circular surface of the related Spanner I2.

3 Thus, the sections I0 are rigidly joined, although capable of being separated should the occasion arise to dismantle the structure.

The sections or units I0 may be readily as' sembled on the ground leaving the completed mast or tower prone or horizontal. The mast or tower is strong and of unusual rigidity. This enables it to be raised from a horizontal position to a vertical position of use. The mast or tower constructed in the manner described and illustrated offers a minimum of resistance to the Wind and a maximum of stability in use.

The mast or tower may be constructed without the diagonal braces 20, if desired, especially if it is not built to any comparatively great height.

' It is to be understood that in accordance with the invention, a mast or tower may be triangular, square or any other shape in horizontal crosssection. Therefore, the spanners may be triangular, square or even straight. Also, the mast or tower in general design may be tapered or pyramidal. However, a construction as shown may be fabricated at less cost than one which is tapered.

I claim:

1. In a tower or mast, pairs of leg members, cross-tie elements, the leg members of each pair extending through alined holes in said elements respectively, in end-to-end abutting relation to each other and rigidly secured to said elements, a splice member telescoping the end portions of each pair of leg members between said elements, said splice member being in non-threaded engagement with said leg members and abutting said cross-tie elements', and securing means to secure said elements, leg members and splice members in rigidly assembled relationship.

2. In a tower mast, as set forth in claim 1, wherein said securing means extends through said cross-tie elements.

3. In a tower or mast, pairs of leg members, annular one-piece spanners, the leg members of each pair extending through alined holes in said spanners respectively, and rigidly secured thereto, a splice member telescoping the end portions of each pair of leg members between said spanners, said splice member being in non-threaded engagement with said leg members and abutting f' said spanners, and securing means extending through said spanners to secure said spanners, leg members and splice members in rigidly assembled relationship.

` HAROLD COHEN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 349,049 Lippincott Sept. 14, 1886 811,435 Perdue Jan. 30, 1906 868,942 Ried Oct. 22, 1907 1,955,074 Knupp Apr. 17, 1934 2,157,500 Sarseld et al. May 9, 1939 471,373 Beard et al Mar. 22, 1892 2,194,810 Reiner Mar. 26, 1940

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