US3564804A - Method of aligning and longitudinally locking cylindrical telescoping sections of increasingly smaller diameter - Google Patents

Abstract

METHOD FOR ALIGNING AND LONGITUDINALLY LOCKING A PLURALITY OF TELESCOPING SECTIONS WITH RESPECT TO EACH OTHER PARTICULARLY A METHOD FOR ALIGNING AND INTERLOCKING SAID SECTIONS AS THEY ARE BEING FILLED WITH PRESSURIZED CONCRETE, SO AS TO TELESCOPE AND EXTEND THE SECTIONS VERTICALLY AS A POLE.

Description

Feb. 23, 1971 METHOD OF ALIGNING AND LONGITUDINALLY LOCKING CYL TELESCOPING 5 Filed March 11, 1969 3,564,804 INDRICAL' ECTIONS OF INCREASINGLY SMALLER DIAMETER 2 Sheets-Sheet 1 B. ARCHER ETAL INVENTORS semmesandsemmes ATTORNEYS 3,564,804 METHOD OF ALIGNING AND LONGITUDINALLY LOCKING CYLINDRICAL Feb. 23, 1971 .B. ARCHER ETAL TELESCOPING SECTIONS OF INCREASINGLY SMALLER DIAMETER Filed March 11, 1969 2 Sheets-Sheet 2 INVENTORS 5M! ppm 5w 70/7 02 10% J semmesandsemmes ATTORNEYS United States Patent O 3,564,804 METHOD OF ALIGNING AND LONGITUDINALLY LOCKING CYLINDRICAL TELESCOPING SEC- TION S F INCREASINGLY SMALLER DIAMETER Bill Archer, Meridian, and John L. Low III, Laurel, Miss., assignors to Arlo, Inc., Jackson, Miss., a corporation of Mississippi Filed Mar. 11, 1969, Ser. No. 806,174 Int. Cl. E0411 12/12, 12/34 US. Cl. 52-741 3 Claims ABSTRACT OF THE DISCLOSURE Method for aligning and longitudinally locking a plurality of telescoping sections with respect to each other, particularly a method for aligning and interlocking said sections as they are being filled with pressurized concrete, so 1as to telescope and extend the sections vertically as a po e.

CROSS-REF=ERENCES TO RELATED APPLICATIONS Method for aligning and longitudinally looking a plurality of telescoping sections of the type illustrated and described in applicants earlier filed applications:

Method for developing a column (Serial 676,286), filed Oct. 18, 1967 and now Pat. No. 3,471,980.

Method for pumping a column (Serial 702,406), filed Feb. 1, 1968 and now Pat. No. 3,469,358.

BACKGROUND OF THE INVENTION Field of the invention Description of the prior art The prior art is not explicit as to either methods for developing a column by pumping concrete into a plurality of telescoping sections or as to techniques for either aligning or stabilizing the sections one to the other. The prior art forms such as Kelsey (975,135), Rogers (883,569) are bolted or secured one to the other prior to pouring or pumping of the concrete. Sweden (212,189) shows the pouring of concrete into telescoping sections which are neither stabilized nor interlocked.

SUMMARY OF THE INVENTION According to the present invention, the telescoping cylindrical sections are aligned and longitudinally locked by drawing a top portion of the larger diameter section radially inwardly as a top lip stopping flange, while drawing a bottom portion of the smaller diameter section radially outward as a complementary bottom lip locking flange, then pumping concrete into said sections so as to telescope the sections until the locking flanges engage one another.

Modifications of invention include drawing the bottom of the smaller diameter section radially outwardly at spaced circumferential areas so as to define, for example, three, four, or six axially extending skirt-like elements which are interposed between the overlapping portions of the larger diameter and smaller diameter telescoping sections. Also, further modifications of invention include ICC filling of grout or a compressible seal intermediate the top lip and the smaller diameter section.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view, partially in section, showing the column fully telescoped and vertically extended after pumping with concrete;

FIG. 2 is a fragmentary vertical section showing the interlocking of the larger diameter and smaller diameter sections with respect to each other;

FIG. 3 is a transverse sectional View taken along section line 33 of FIG. 2;

FIG. 4 is a similar transverse sectional view, showing a modification wherein four axially extending skirt-like elements are employed;

FIG. 5 is a like transverse sectional 'view, showing a further modification of the invention wherein six axially extending skirt-like elements are employed;

FIG. 6 is a fragmentary vertical section, as in FIG. 2, showing a modification of invention wherein the top lip is longitudinally olfset with respect to the top so as to define a grout filling pocket intermediate the telescoping sections;

FIG. 7 is a like fragmentary vertical section, showing a further modification of invention wherein the top lip and bottom lip are complementally configured so as to engage each other upon an inclined locking angle;

FIG. 8 is a fragmentary vertical section of interlocking sections, showing a further modification of invention wherein the top lip is inclined and the skirt-like element is chamfered to assist in telescoping; and

FIG. 9 is a like-fragmentary vertical section showing a further front modification of invention wherein a compression ring and compressible sponge-like sealant is placed intermediate the telescoping sections.

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1 a vertical column is shown comprised of telescoping sections 10-24 pumped with pressurized concrete 28 via an entrance gate 36, the bottom section 10 being set in concrete base 34 set within ground area 32. Top section 24 may have a vent 26. The individual telescoping sections overlap as at 30, and as illustrated fragmentarily in FIGS. 2, 6, and 7. Vertical stability and longitudinal locking of one section with respect to another is accomplished by circumferentially inwardly drawing a bead or top lip 34 on the larger diameter lower section, while setting a plurality of longitudinally extending skirtelements 32 on the smaller diameter section bottom 38. As the sections are telescoped vertically by pumping of concrete 28, the top of the skirt-like secions 32 abut the top lip 34. Simultaneously, the intervening spaces 39 between the overlapping sections are filled with concrete. This concrete sets with the concrete inwardly of the sections and enhances vertical stability of the interlocking sections.

In FIG. 3, three of such skirt- like elements 32, 40 and 44 are illustrated. In FIG. 4, a modification is shown wherein four such skirt- like elements 32', 40', 44 and 46 are illustrated. Similarly, in FIG. 5, a further modification is illustrated wherein six such skirt-like elements 32", 40", 44", 46", 48 and 50 are illustrated.

In FIG. 6, a further modification of invention is illustrated, wherein the inwardly extending top lip 34' on the lower section is longitudinally offset with respect to the top edge so as to define a grout pocket 54 intermediate the overlapping sections 14 and 12. As the section is pumped and the lower skirt-like elements 56 abut top lip 34 grout -52 may be filled into the pocket. In this modification an air gap 55 may be provided intermediate top lip 34 and the exterior wall of section 14.

In FIG. 7, a further modification is illustrated wherein the top lip 60 and the bottom lip 58 have inclined complementary surfaces engaging each other as at 62 to provide a positive locking seal. An air vent 64 may be defined so that air or fluid may be urged through the hole as the sections are pumped. A similar air vent 63 is illustrated in FIG. 2.

In FIG. 8 a further modification of invention is illustrated wherein larger diameter section 12 top lip is comprised of a stop ring 66 welded at an incline and of sufficient narrowness to provide air gap 78 intermediate the two sections. The bottom skirt-like element 68 is chamfered as at 69 to assist in the telescoping of the sections and may be welded to the bottom section. As concrete is pumped into the telescoping sections, concrete is urged into the peripheral voids laterally of the skirt-like element 68, also intermediate top lip ring 66 and bottom skirt-like element 68 and within the air gap as at 70. This provides a positive seal and alignment of the elements one to the other.

A further modification of invention is illustrated in FIG. 9 wherein the top lip 72 is somewhat similar to the top lip in FIG. 8, however, it includes an inclined face 73 presented opposite the smaller diameter section 14.

The skirt-like element 76 may be welded to the bottom section, leaving a space sufficient for the fitting of a compression ring 74 and a compressible polyurethane sponge or like sealant ring 78 which under compression tries to assume it original shape. As the poles are pumped with concrete 70, the concrete enters into the peripheral volume between the skirt-like element 76 and the top lip, as illustrated.

Manifestly, the columns may be variously aligned and locked without departing from the spirit of invention.

We claim:

1. Method of aligning and longitudinally locking cylindrical telescoping sections of increasingly smaller diameter, comprising:

(A) drawing the top lip of the larger diameter section radially inward as a top lip of narrower width than any axially extending lugs, so as to provide an air gap between the larger diameter section top and the smaller diameter section exterior;

(B) drawing a portion of the bottom of the smaller diameter section radially outward, as a bottom lip beneath that portion of the larger diameter section which has been radially inwardly drawn;

(C) positioning a plurality of axially extending lugs on the bottom of said inner section so as to be beneath said top lip which has been radially, inwardly drawn, said axially extending lugs having tops being complementally configured so as to engage said top lip bottom at an inclined angle, at least three such axially extending lugs being interposed between the smaller diameter section bottom and the larger diameter top;

(-D) filling the remainder of the sections With pressurized concrete, such that the concrete enters and sets between overlapping portions of said sections;

(E) drawing the top lip of the large diameter section radially inwardly at a point longitudinally offset with respect to the top edge, so as to define a grout pocket above said lip and intermediate the top edge of said larger diameter section and the bottom exterior of said smaller diameter section, said drawing of said top lip inwardly being narrower than the width of said axially extending lugs, so as to provide an air gap between said larger diameter section top and said smaller diameter section exterior; and

(F) compressively sealing intermediate said top lip and the exterior of said smaller diameter section bottom.

2. Method of aligning and longitudinally locking cy- 25 lindrical, telescoping sections of increasingly smaller diameter as in claim 1, including:

(F) venting said larger diameter section top beneath said top lip. 3. Method of aligning and longitudinally locking cylin- 30 drical telescoping sections of increasingly smaller diameter as in claim 1, including:

(G) chamfering the top edge of said axially extending PRICE C. PAW, JR., Primary Examiner US. Cl. X.R. 52-2, 115, 720

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