US900545A - Support for cross-arms. - Google Patents

Description

J. M. HUMIsTo SUPPORT FOR GROSS PPPPPPPPPPPPPPPPPPPPPPPPP 6. 900,545. Patented Oct. 6, 1908.

l'erly cut again on a plied to the UNiTED STATES! PATENT OFFICE.

JOHN M. HUMISTON, OF BERWYN, ILLINOIS,

CORPORATION OF -ILLINOIS- sUPPoRfr Fon cRoss-ARMs. V

To all whom it may concern:

Be it known that I, ,JOHN citizen of the Uited States resident of Ber n, county of Cook, and State of Illinois, aveinvented-a new and useful Improvement in Supports for Cross-.. Arms, of which the following isl a, specifioatlon.

M. HUM1sToN,`a of America, and

M invention relates to devices by means of w 'ch lcross arms used for carrying electric wires, may be attached to their supfporting poles. vPrior to my inve'ntion thereo it has v een customary to attach such cross arms to 'which may be mentioned the weakening of the'pole, andadded eXposure.

to the rotting lnfluences of the weather and'the cost in'labor of properly' cuttin the gain. Owing to the fact that it is a d' cult matter to pro ole that is standing, t e practice has enera y been adopted of cutting, before t e ole is raised, as mang gains in the pole 'as is t ought will. be need'e in the future, even though a fewerv number of cross arms than that number are tobiev immediately provided. As a result many gains'are cut 'ltlhatare not used for a number of-ye'ars if It is the object of my-invention to provide a'device which Will form a proper seat for the arm, which will not weaken thel pole orv facilitate its rotting, and which will be veasily a ole when standing, and thus db i away With t e necessity of providingat the time of original construction, more gains than are to be immediately needed,

My invention is .illustrated in the 'aecom-v v .panying sheet of drawings, in which -Figure 1 shows the top of a pole towhich a Specification of Lettere Patent. Application flled June 4, 1906. Serial No. 320,192.

Patented out. e, 1908.

cross arm has been applied by means of my device; Fig. 2 shows a 'planview of the same partly in section, the section being taken on the plane indicated by the line a a in Fig. 1; Fig. 3 is a perspectiveview of the device in its preferred form; Figs. 4 and 5 show two views of a\ cross arm attached fto a' ole by means of a modified form of my device, the view of Fig. 4 being a plan view.v partly in section, the section being taken in .the lane of line bb of Fi 5. Fig. 6 shows a simi ar view to that of method of attachment of a cross arm to 'a pole by means ofstill another modification of my device, and Fig. 7 shows a. perspective view of this latter modification.

' Referring. now more `particularly to the preferred form of my invention in Figs. 1, 2

k ASSIGNOR TO STEEL GAIN MANUFACTURING COMPANY, OF CHICAGO, lILLINOIS, A i

igs. 2 and 4, illustrating the and 3, A indicates the device' as a whole.

This is formed referably from a flat piece of 'sheet steel ma e first' into a suitable blank AandJolrer'i'leiit so as to have projecting flanges B B', projectingfflanges C C',

two forwardly i plate from which the device lsformed, toether with` the forwardly projeoting flanges s B' form a'seat or which serves the same purpose as the notch usually cut in the vpole-inv accordance with the old method above out-lined. The two rearwardly projectin flanges C C' serve to engae the rIpole as is c early indicated in Figs. 1 an 2. he device A and the cross arm E are held in lace on the pole by means of the throughbot F passing gain for the cross armE,

through both cross arm and pole, and-through the opening D in f the piece 'A4 In order thatthe nut f of the vbolt F and the` head of that bolt' may not 'sink into thewood of the respectively, lar

provided as clear y indicated in Fig. 2.

pole and cross arm e washers` f'. and f' are The forwardly projecti'ng flanges B' BI are made just far enough apart to snugly embrace the cross arm E and thus prevent the movement lof the arm in the socket thus formed for it. Owing to the fact that poles for use in electrical constructionare ordinarily round rather than rectangular, and owing further to the fact thattheir size varies to a considerable' extent the rearwardly projecting flanges C C' are made of different form than those which embrace the rectangular cross arm. The rear portion of these flanges areobent into such sha e as to conform to the approximately cylinc iical surface of the pole. The radius of curvature of the inner surfaees, of the flanges C C' are preferred to be made somewhat smaller than the radius of the smallestpole to Which the device is to be applied, so that there will be a tendency for the corner edges c c' to project somewhat into the surface of the pole. On the poles of larger radius the tightening of the nut f upon the bolt F, will by virtue of the resiliency of the flanges C C' allow the inner surface of these flanges to conform to the surface of the pole. A peeuliar advantage brought about by this construction is that when a cross arm is thus attached to a pole that is not thoroughly seasoned, the resiliency of the flanges U (Y, and of the metal to which they are attached, will compensate in large measure for any shrinkage in the diameter of the pole which may be caused byits drying out. The hole D in the center of the device A ispreferably made large so as to allow access of air to those parts of the exposed surfaces of the wood between the cross arm and the ole. In this way any tendency to rot which might eXist, due to retained moisture, is larfrely obviated. If desired, however, the ho e D may' be redueed to circular form and of such size only as to admit of the passage of the bolt F throu h it. f

In Jie modification shown in Figs. 4 and 5, the device A, retaining the principal features of that shown in Figs. 1, 2 and 3, is made of such design as to adapt it to being east rather than formed from sheet metal. The forwardly projecting flanges B B' are best shown in Fig. 5 and the rearwardly projeeting fian es C C' being best shown in Fig. 4. In this. atter figure the device is shown as applied to a pole having about as small a radius as the device is well adapted to fit without trimming the pole. For larger diameters of poles the cross arm would stand out from the pole rather than lie flat against it as viewed in this fi ure. If it became nec- 4 essary to apply the evice to a pole of even smaller relative diameter than that shown in this figure, then this could be accomplished by trimming away a small portion of the face of the pole against which the cross arm would otherwise bear. The employment of this latter expedient could be obviated by makeoone ing the inner surfaces of the flanges C C' so related to each other that they would both bear firmly against even the smallest pole that might be used.

The modification shown in Figs. 6 and 7 is preferably to be made of sheet steel. ln this there are four forwardly proj ccting lugs or fianges B B' B2 and B3, and two rearwardly projecting flanges C and (J', each of which has two rearwardly projecting points c c' and c e* respectively. The method of applying cross arms to a pole by means of this device and the adaptability of the .device to poles having different diameters, is quite obvious from an inspection of Fig. 6. The points c c' in this case actually enter into the Substance of the wood of the pole and thus prevent movement of the device A, and consequently of the cross arm E with respect to the pole.

I do not wish to limit myself to the exaet forms I have here shown, and deseribed. lt is obvious that many changes of form might be made without departing from the spirit of my invention.

What I claim as new and desire to secure by Letters Patent is:

1. The combination of a pole, a cross-arm, a single interposed member having a plane surface to receive the cross-arm, and a curved surface formed in resilient material adapted to engage the pole, and means for elamping said member and the cross-arm to the po e.

2. The combination of a pole, a cross-arm, a body having a plane surface against which said cross-arm may rest, and a smooth curved surface adapted to engage the pole, means to prevent the cross-arm from moving on said body, and a through bolt for clamping the support against the pole.

3. The combination of a pole, a cross-arm, an interposed support having a smooth curved surface for engaging the pole, and projecting members for engaging the cross-arm to prevent angular motion thcreof, and a through bolt for clamping the cross-arm and support to the pole.

4. The combination of a pole, a cross-arm, a single member interposed between them provided with a smooth curved surface, to engage the pole, and arms to engage the cross-arm, and a bolt passing through theI cross-arm, the interposed member, and the pole for securing all the parts together.

5. A support for eross-arms comprising a sheet metal plate having forwardly projecting fianges for engaging the cross-arm, and rearwardly projecting fianges adapted to partially surround a pole, said flanges being integral-with the plate.

6. Supporting means for cross-arms, comprising a metaf plate, forwardly projecting horizontal fianges on said plate forming a gain to receive a cross-arm, rearwardly pro- Jectmg fianges curved to eonform to the sur- Godset face'of a pole, and plate to the pole. 4

7. Supporting means for cross-arms comrising ametal plate, forwardly projecting iiorizontal fianges on said plate orming a gain togreceive a cross arm, rearwardly' proj ecting fianges curved to conformto the surface of a pole, and a bolt for clamping the cross arm in said gain and said fianges against the pole. f

8. Supporting means for cross-arms comprising a metal plate'against which a crossarm is adapted to rest, with rearwardly proiecting fianges on said plate adapted to emrace the surface of the pole to which the means for clamping the cross-arm is to be attached.

v a pole.

rest, flan es a 9. Supporting means for cross-arms comprising a metal plate against which a cross arm is adapted to be clamped, rearwardly projecting fianges on said plate angularly disposed with respect to eac other and the plate, so as to ada t them to the surfaces ofv poles of different' iameters, and means for securing the cross-arm to the plate and the plate to a pole. f

10. Supportin `means for cross-arms comprising a channe piece ada ted to receive a cross arm and to be applie to apole, a bolt passin through the channel piece and also throug the cross-arm and pole when in position, and a resilient member ada ted to conform itself to the curvature oft e pole surface under pressure from said bolt.

11. Supporting means for eross-arms comprising a member having a channel-way to receive a cross arm, and a surface to engage a pole,l a bolt passing through the member and also through the cross-arm and pole when the parts are in place, said member befigure, in cross section.

13. A. support for cross-arme having twoi channel-ways, one being rectangul'ar in crosssection and adapted to receive a cross-arm, and the other formed by resilient fianges and varying its figure to conform to the contour of a po e. v .v

14. A support for cross-arme having a plane surface a ainst which a cross-arm may.

apted to engage the crossarm and old it in position, and a curved surface formed by fianges adapted to engage 15. A support for 'cross-arm's having a lane surface ada ted to receive a cross-arm, forwardly exten mg fianges to engage and control the position of the arm on said face; and an op osite surface formed by rearwardly exten inglflanges and curved so as to be adapted to t e surface' of a pole.

16. A support for cross-arms having a resilient member adapted to engage a pole, a plane surface adapted to engage a cross-arm,

adapted to embrace and hold thearm at right angles to the pole. .v

17. A support for cross-arms having separately curved resilient members adapted to engage a pole, and a plane surface adapted to engage a cross-arm, with fianges oifstanding from said surface adapted to embrace and hold said cross-arm.

18. In combination, a pole, a cross-arm, and an interposed support comprising as elements a cross-arm member and 'a resilient pole member, with means to engage said members and hold' the cross-arm at right angles to the ole. T

- 19. In com ination, apole, a cross-arm, an interposed sheet metal support having a resilient curved surface part1ally surrounding the ing t e cross-arm to prevent angular motion thereof with respect to the pole, and means for clamping said support and cross-arm in polsition with the latter at right angles to the o e. 1. I p 20. In combination, a pole, a cross-arm,

and fianges off-standing from saidsulface and a single integral supporting device i adapted to be in'ter osed between the ole and arm, one face o said device shape to embrace the pole and the other to rest against theface of the v curing bolt passing through the center of the pole, the cross-arm and the said interposed device. 4 l,

21. In combination, a pole, a cross-arm, and meansfor supporting the arm horizontall on the ole comprislng a unitary integra device a apted to be interposed between the pole and arm, said device having one face plain and shaped to embrace'the pole in order to prevent turning thereon, and another face receiving the cross-arm With means to prevent its turning thereon, and a through bolt for binding the pole and arm together with said device between them.

224. In combination, a pole, a cross-arm, a single intermediate member lying between `the pole andl cross-arm' with its opposite' lsides shaped and adapted to spectively and positioned so asto'have its Lfit the two rei longitudlnal axis approximately bisected by a line passing through the center of the pole to the cross-arm, an i a perpendicularly through bolt assing through the arm, the intermediate evice, and t e pole on said me.- I

23.' In combination, a pole, a cross-arm,

cross-arm, and a seandmeans for supporting the' arm on the r pole, comprising a single integral device adapted to be inter osed between the arm and the pole, said evice havin adapted to embrace'the pole,

ymembers an a member v 433, aoogscs for supportin the cross-ann, and a secui'ing arm, and a securing bolt passing through the 10 bolt passing t rough the pole, the cross-arm center of the pole, the cross-ann and the inand the interposed devce. ter osed device.

24. In combination, a pole, a cross-ann, igned by me at Quincy, Adams county,

rand means for supnorting the arm on the Illinois, in the pi'esence of two witnesses.

pole com rising a evice adapted to be in- JOHN M. HUMISTON. terposed etween them, one face of said de- Witnesses:

vice shaped to embrace the pole and the S. F. SooTT, other to rest against the face of the cross MONTAGUE FERRY.

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