US2720016A

US2720016A - Pole band

Info

Publication number: US2720016A
Application number: US193121A
Authority: US
Inventors: Udo K Johannsen
Original assignee: Brewer Titchener Corp
Current assignee: Brewer Titchener Corp
Priority date: 1950-10-31
Filing date: 1950-10-31
Publication date: 1955-10-11
Anticipated expiration: 1972-10-11

Description

Oct. 11, 1955 U. K. JOHANNSEN 2,720,016

Filed Oct. 51, 1950 IN VEN TOR.

02/0 Z fafialmsem BY United States P fl o 2. Claims. (Cl..24-24B)1 This invention relatesto a-structurally and'fun ctionallyimproved pole'band capable of'use in numerous different associations but of especial value in connection with electric transmission lines.

It is a primary object of the invention to provide aunit of this type which will be of simple design and capable of production atminimumwost; thepresent: teachings resulting in a unit which is functionally superior to bands as heretofore produced.

A further object is that of providing-a pole bandwhich will embody a strengthfactor far superior to similar elements of the same gauge and weight as heretofore marketed.

Another objectis that of designing a device ofthis type which may readily be applied to-apole'or other-supporting structure andafter itsapplication will'have asubsta-ntially indefinite life at least equal tothat of the poleor mounting structure to'which it is applied.

With these and otherobjects in mind, reference is had to the attached sheet of drawings. illustrating practical embodiments of the invention and in which:

Fig. 1. is a face view of a pole assembly-which is maintained by means of bands embodying improved structures;

Figs. 2 and 3 are sectional views taken along the lines 2-2 and 3-3 respectively and in the direction of the arrows as indicated in Fig. l; and

Fig. 4 is a similar view in enlarged scale taken along the lines 4-4.

Referring primarily to Fig. 1 there has been shown a power line or pole assembly suitable for use in power transmission. As such it may include vertical pole members 5 having their lower ends embedded in the ground and supporting between their upper ends a spar 6. Such support is achieved by means of pole bands generally indicated at 7. Similar bands 8 encircling poles 5 may serve to brace the structure by having the upper ends of guy wires 9 attached to them; the lower ends of these wires being secured to anchors 10 embedded in the ground. This assembly is intended merely for illustrative purposes and in its general make-up is more or less conventional. As will hereinafter appear the

bands

7 and 8 may include structures which completely encircle the poles or spars or only partially encircle the same. Therefore, the word band is to be regarded in a generic rather than in a limiting sense.

Each of the bands (whether annular or arcuate) is preferably applicable to poles and spars of different diameters. With this thought in mind each band has been shown as embracing a pair of sections capable of being adjusted with respect to each other. Thus, as in Fig. 2, the band which encircles pole 5 includes bodies which are of arcuate configuration and have been indicated by the reference numeral 11. These bodies are formed with slots or openings 12. When bodies 11 are overlapped as shown, these slots or openings may register at certain points and a bolt 13 may be extended through the openings thus registering to secure bodies 11 to each ice other and so that they will define. in. aggregatea. diameter. substantially equal to thepole to. which they are to. be. applied. Bolt 13 may include a conical end portion 14;

which, when the band is applied to the pole, will embed or penetrate into the material of the. latter to: thus prevent displacement ofthe band.

As shown in Fig. 2, as well as Fig. 3, portions.15.define.

the ends of the. band. These portions will be herein: after described indetail.

spar 6. Bolts 16 may,

the entire structure may. be tightened. These bolts may also mount washers and ifitisnot desired to threadeach: of their ends. then it is obvious that any. other. suitable and acceptable structure might be employed.

Fig. 4 having been taken along. lines 47-4 o.Fig..1,.

it follows that the band therein illustratedLis substantially.

circular rather than merely arcuate; Again it. prefer; ably includesiband body sections18 and 19 which are individually arcuate and have their inner portions over-- lapped and formed with. openings whichrnay be aligned. According to the diameter of the. spar or pole. which. they are to encircle these sections are shifted withrespect to each other and when they define a proper. diameten, bolts 20 may be passed throughthese openings. The. ends.- of these bolts-may be cone shaped. In order. to. tighten. this band a bolt 21' of arcuate shape may be provided. and.'

have its ends pass. through the openings in theend portions of this pole bandl. Bolt121 has secured to.- it.the.

upper end of guy wire 91 Bolt 21 may serve to tighten the band by mounting nut 22 or. in any. other suitable and acceptable manner.

Regardlessof. whether the bands. are segments. of a.

circle or substantially, a. complete circle,.the, end portions through which bolts 16, 21or other tightening. means'ex tendare formed substantially in the manner shown in Fig. 4. As will be seen in that figure the band end is preferably slightly offset as indicated at 23. Beyond this it continues in the form of an arcuate portion 24 from which a part 25 extends outwardly. The latter provides a bearing surface for the nut associated with the tightening and securing bolt or else the head of such bolt. From the outer end of this part the band body is extended inwardly as indicated at 26 to provide a bracing portion terminating in line with the surface of the pole. The outer end of this bracing portion is preferably turned inwardly upon itself to furnish a retaining portion 27. The length of the latter is such that it underlies part 24. At that point the adjacent surfaces of retaining portion 27 and part 24 may be provided with a suitable number of projections and recesses 28' extending into recesses 28 formed in the adjacent faces of the arcuate portions 24. The band is preferably formed of low carbon steel. Therefore spot welding may be resorted to at these points in order to secure the free end of retaining portion 27 against movement with respect to part 24 and with the terminal edge adjacent the offset 23.

As a consequence of this structure it is found that there is no tendency of the welding to shear or break. The ear or end piece will resist strain greatly in excess of forces which have heretofore resulted in a rupturing at the point of weld. This is because the strain imparted to the bearing surface provided by part 25 is directly transmitted through part 24 to the body of the band. A distortion or bending of part 25 is prevented by bracing portion 26 in conjunction with the retaining portion 27. In other words, as the band is tightened, the parts will mutually cooperate to prevent collapse of any part of the ear portion. As will be seen, any tendency of the retaining portion to ride rearwardly will be prevented Patented Oct. 11,1955

They are provided with.open-. ings through which bolts 16 extend to attach them .to simi lar end portions forming. part of. the bands encircling. as shown, be threaded adjacent.-v their outer ends and mount nuts. 17 by- :means of which.

due to'the resistance of offset 23 which will prevent substantial strains being transmitted to the zone of welding. It follows that among others the several objects of the invention as specifically aforenotcd are achieved. Ob-

inner surface and an outer surface, a plurality of adjusting holes extending from said inner surface to said outer surface and spaced longitudinally along one end of said body, an outwardly offset part short of the other end of said body, a portion beyond said offset part and adapted to be spacedthereby from a surface to which the band is applied, a part beyond said portion extending substantially perpendicular and outwardly with respect to the same, an inwardly inclined part forming a continuation of said perpendicular part, a retaining portion at the end of said inclined part and including a reverse bend providing a connection therewith such that said retaining portion extends toward said band body with the end zone of the former underlying and in contact with the portion beyond said offset part and with the end of said retaining portion abutting the inner surface of said offset part, relatively projecting and recessed surfaces formed in the adjacent faces'of said retaining portion and the portion beyond said offset part and engaging to secure said portions against movement with respect to each other, and said perpendicular and inclined parts being formed with aligned openings for the passage of a bolt and providing respectively a bearing surface and bracing structure for loads imposed thereby.

2. A pole band for use in a pole band assembly wherein a pair of pole bands are adjustably coupled to form a securing means for use on a pole, said pole band comprising an arcuate body of straplike material having an inner surface and an outer surface, a plurality of adjusting holes extending from said inner surface to said outer surface and spaced longitudinally along one end of said body, an outwardly offset part short of the other end of said body, a portion beyond said offset part and adapted to be spaced thereby from a surface to which the band is applied, a part beyond said portion extending substantially perpendicular and outwardly with respect to the same, an inwardly inclined part forming a continuation of said perpendicular part, a retaining portion at the end of said inclined part and including a reverse bend providing a connection therewith such that said retaining portion extends toward said band body with the end zone of the former underlying and in contact with the portion beyond said offset part and'with the end of said retaining portion abutting the inner surface of said offset part, said perpendicular and inclined parts being formed with aligned openings for the passage of a bolt and providing respectively a bearing surface and bracing structure for loads imposed thereby, all of said several parts and portions being integral with each other, and means for securing said end zone of the retaining portion against movements with respect to said offset part and the portion beyond the latter.

References Cited in the file of this patent UNITED STATES PATENTS 1,172,690 Erickson Feb. 22, 1916 1,264,446 Sears Apr. 30, 1918 1,267,352 Baker May 28, 1918 1,274,689 Cooper et al Aug. 6, 1918 1,318,503 Meyer Oct. 14, 1919 1,482,564 Isackson Feb. 5, 1924 1,596,944 Philbrook Aug. 24, 1926 1,625,716 Edwards Apr. 19, 1927 2,069,163 Hibner Jan. 26, 1937 2,213,022 Stauffer Aug. 27, 1940 v x FOREIGN PATENTS 100,017 Switzerland of 1923 117,824 Australia of 1943 896,003 France of 1945