US1162657A - Transformer-pole. - Google Patents

Description

E. 0. SCHWEITZER.

TRANSFORMER POLE.

APPLIcAnoN FILED m2, 1913.

Patented Nov. 30, 1915.

3 SHEETS-SHEET l.

E. O. SCHWEITZER.

TRANSFORMER POLE. APPLICATION FILEDJANJ, 1913.

Patentrd, Nov. 30, 1915.

3 SHEETS-SHEET 2.

E. O. SCHWEITZER.

TRANSFORMER POLE.

APPLICATION FILED 1AN.2,1913.

Patented Nov. 30, 1915.

3 SHEETS-SHEET 3A A EDMND o. sCHWErrzER, oF CHICAGO, ILLINOIS.

.TRANSFORMR-POLE.

Specification of Letters Patent.

ratenteaxov.30,1915.

ppii'eation filed January 2, 1913. seran No. 739,624.

To all 'whom iitvmai/ concern SCnii/nrrzrzn, acitiz-en of the United States, residingat--Chieago ,in the. county of Cook` 'and- State of Illinois,'-ha've invented a cerdrawings, formingafpartof this sigieciiealmay `be placed near lthe bottom of the pole.

I have v'provideda siiitable opening in t-lie pole?whichlis'closedf'by a door' so that ready access'inayf behadlto the transformer and the fuse blooksf'whieh are'supported by the pole. My-inver'ition'obviates thev necessity of placing the @transformer at the top ofthepole-fas is necessary in the present.. system of distributing'eurrent to Consumers.; The pole'V is arranged so vthat it forms the casing for the trar'isfr'mer and-'contains insulating oil which maybeijofany volumeA desired since there is provided available space for that purpose. Y

In one 'embodiment 'of .my invention 'the secondary wires are connected' at vthe top of the poleand vleadv 'downward to the trans'- for1n'e'r."-The primary-wires, on the other tures such as 'are present in the ordinary construction ,asv now in-use.

hand, whieli'eXtend from' the transformer, lead downward and are connected to the primary cable which is laid 1na suitable con- The advantage of my invention is that the appearance of 'the poleV isgreatly enhanced inasmuch as 'thereare no obiectionable fea- Anothergfeatureof my invention is that the transformer is'proteeted from lightning to a large extent,' ow i n to its position in the pole, and'also vto :the fact that the pole which formsits casing is connected vto the ground and therefore, actsl to some extent as a lightning :rrrresterll l Nly Vinvention .also provides an arrangement by which transformers can be easily .installed and removed with a iiiinimirm loss of time o wiiig tothe accessibility of the transformer near the-base of 'the pole An additional feature whien my invention provides is the fact that the capacity ot the transformer per uiiit of active weight can be made relatively large owing-'tm the large amoiintotI Space available l transformer pole. Y

Mv invention will be -betteriinderstood by referring to the accompanying drawings iii whieli- Figure 1 iS anelevational view of apolc embodying the features of'in'y' invention. Fig. is a cross-sectional view taken `onl line 2 2 of Fig. 1. Fig. 3 is a vvcross-sectional view taken on line 3-.3 of '1"igl'-2, Sonie of the parts being removed in' order to clearly lshow the arrangement. Fig'. 4 is a cross-sectional 'vieiv takenon 1i`ne 4 -4 ot'l Fig.v 2. Fig. 5 is an elevational view ofi'thetransformer forming part of'iny-in-vention-.- '"-l"ig.

6 is an end'view 'of Fig. 5,'one`ot tlie \sliiel ls being shown iii cross-section.l Figi -7 is a.

bottom v 'ie'w of the transformer; j FigrSis a top View thereof. Figst) illustrates theconv nections of the Secondary viii-es with the primary coils connected to the niain supply wires and the two secondary coils having three lead wires vextendinggtl'ierefixim. 'Fig.

11 is'a top view of 'the coiinecti'ir' which is disposed at the top of the pole'and to which Suitable eonnecting'pieces arearranged be-v tween each of these Sections So as to make the pole more or lless oinaii'ientali-the whole institutingr a rigid Structurewhich is diii'able and serves the purpose of l"siiiiiioiftinf; the \\'iie.'s at the top i'ir'fi'dtli':tranfiniei :it the bottom. Thetojseet io`n 'of tlicpole, I` has inserted therein a connector 17, as Shownv in Figs. Z and 3.

It will be observed vthattliere is a long for oiifavithiii the "ivo Ysecondary` coils on the transf'orme'r'. Ifi'g. 10 is a diagrammatic view showing the" three' bearing engagement between this section and the lowermost portion of the connector. This connector as shown in detail in Figs. 11 and 12, has an upper portion- 19, which has fastened thereto at different portions thereof plates 20,121 and 22. VEach of these plates is provided with a loop 23, extending into a recess in the portion 19, as shown clearly in Fig. 11,'. and these loops are .arranged to receive the ends of the connecting rods 24, which lead' upwardly through the connector 17. This connector, it may be stated, may be of insulating material such as fiber .or wood.

'lhe plates, 20, 21 and are held in position at one offtheir respective ends by bolts 25, .26 and 27, which pass through the connector 17, and at their other ends by bolts 28, 29 and 30. Four suitable connections are thus provided for each plate, for the secondary lead wires which extend 1to the consumers. T he bolts 28, 29 and 30 are held securely in the connector by means of suitable nuts 31, 32 and 33, which are disposed at each side of the portion 19, and which are tightened against suitable washers so as to form a rigid connection. and washers hold the bolts 25, 26 and 27 in place. The connecting plates 20, 21 and 22 are provided with suitable openings, through which the bolts 25, 2G, 27, 28, 29 and 30 are adapted to pass, as-shown in Fig.. 11, and in order to form suitable connection for the lead wires there are arranged nnts and washers at either end of each bolt.

lThe members 24, which pass upward through 'the connector are provided at their llower ends with suitable washers and nuts so that they may be properly 'held in place, and tov form connecting means for the down-- wardly extending wires.

As shown in Fig. 11 and 12, there are three rods 24, to which three wires are connected. and which form a secondary cable 32, which leads down through an insulator $53, and is connected to tbeftransformer as shown in Figs.` S and 9. These connections are made with the secondary coils of the transformer as shown diagrammatically in Fig. 10. The primary cable 33 extends upwardly through a pipe 34, and is connectedA at its lower endi'to the primary cable which is laidin a suitablevconduit.

r'he upperdend of the pipe 34, is secured inajsection 35, which is/fa'stened in any suitable way to the 'end of 'the pole. Above the section 35` and secured in place in the pole is a table 36, which has extending therefrom a pipe 37, the connection of the pipe with the table 36, being very tight so as to hold the oil 38, in the pole. This oil, as shown completely covers the transformer and acts as an insulating and cooling medium. Thepipe 37, admits the primary cable 33', which leads upwardly and has a Similar nuts readily accessible when the door l2, is re moved from the pole. This door is provided with a flange 43. which extends around the entire door vand provides means whereby suitable screwsmay fasten the doorto t-he pole. The lower end of the door has a lng 4l. which projects downwardly and inside of one edge of the opening. At the upper `portion of the door. a lock 15is provided so that whenthe door is in position'and locked, it will be impossible for anyone cxcept the authorized person to open the same.

lVhen desired. insulation 39AV` such as liber and the like may be provided on the inside of the pole and door so. that when the fuses blow out any arcs which are formed will not be grounded through the metallic pole.

As shown in Figf'l. section 1G. has a member 46, in engagement therewith. which member is secured to a ring. 4i'. semiclrcular member +3. is provided with nuts and bolts at either end thereof` which pass through the member lo, and serve the purpoSe of clamping the members lo and 4N. .to the section 16 of the pole. The rin;r 4T. 1s arranged' to support a cap'lf. asshown in Fig. 2, which forms a protection for the Connections. This cap 49. is l)rovidcd with a pluralityY of slots 50. so as to admit the secondary cables as shown. These cable-4 also pass through openings in the rin;r t7. and are thus heldin place. ,l

Just below the door and situated above the level ofthe oil l have arranged a plate 51. which may be loosely supported in any suitable manner in order `that it may be rcmovcd when it is desired to lift the transformer from the pole.

Referring .now to the transformer shown structurally in -Figs 5.- to 9. inclusive. and diagrannnatically in Fig. 10. it will be ooserved that the transformer comprises a core which hasthree primary coils, and two secondary coils disposed upon a bridge member The core is Supported byineans of two pairs of angle-bars tand which are joined together at'the bottom bv suit able bolts 56 and 5T. and at the topby bolts 5S and 59. so that the saidangle-bars form a sort of framework for the core and coils. Shields (30 and 61. are retained upon the angle-bars 54 and by means of bolts G2,

from the pole and out through the opening closed by the door.

t thetop otl the said angle-hars 5l and 55. there are arranged suitable handles til and (i5. which are held in place bv bolts and ISS). These handles are adapted to be grasped when it is desired to remove the transformer. As shown in Fig. T, the said angle-hars 5l and have end portions at right angles thereto and which torni flat surfaces engaging the table 36. The primary wires aa shown in ltigs. ti and are Supported by pieces ot' liber ('it and (ST. tht-se being held to the bolt till, by means ol screws (3S, which pass through a clamping plate (S9, and in to linother plate 70.

0n the opposite side olE the transformer the ,eecondarv wirca4 are supported b v inaulators 'T1 and 7:2, tht-Fe being held in place upon the bolt (3?). h v means ot clamping Screws 73. which pass through a clan'iping plate Tft. and into a `Smaller plate T5. these wires being connected with two eecomlaiwY coils upon the transformer. 1t will be ob .served that thinl trai-informer doess not occupv a great deal of space. and the arrangement is auch that the oil 3H, completely covers it.

s shown diagrammatically in Fig. l0 the transformer ia provided with three primar v coils, which mav be connected either in series or in multiple, as deaired, and there are two secondary coils which are arranged with three lead wires, which. as before described. laid upwardb7 through the pole and connect with the connector at the top thereot in order that consumers ma)v be Supplied with the current at the proper voltage.

It will he apparent that, inatead of having merelyr the secondary wires leading up to the top ot' the pole. both the secondary and the priinaijv wireal ma)v be connected at the top ot' auch pole if desired, or the conditionsI may be reversed as shown in the drawings. The primarv ma)Y be led up to the top of the pole and have suitable connections with the primary cable. and the secondaryv wires ma)Y be led down to the econdary cable which may be led in a COD- duit provided for that puri'ioFe.

The eseential feature ot my invention iS to provide `a pole which is ornamental in its nature, and at the same time is ot a construction such as to completely inclose the transtorn'ier and the various connections to the overhead wireS. and at the same time provide such a pole with readv meanQ ot' access to such transformer and the connections, such as the fuse blocks comiected therewith.

From the foregoix'ig description, it will be seen that my invention comprises; a transformer pole, in which the transl't'nn'ier is (liSpoSed so that the pole act,`4 to mme e,\tent as a lightning arre ter. the po ition olI the transformer being uch that it can bc czoilv installed and removed with ver): little dillicultv. 'the arrangement i .wel 'hat the capacit) ot` the transformer per unit oln active weight is rclatiwlv large owing to the large amount oll |iace available l'or oil within the pole.

llrliile l have described the lapecitic cmliodin'ient ot'mv invention. l do not wieh to be limited to the precise construction shown, but desire to secure prr'i'tection upon the feature ot disposing the transformer within a pole and having .auch ti';iii. t'oi'liit-r suitably connected to anv .aonrce ot' power in order to eeeure the lower voltage for use in distribution to consumers.

'hat l claim iet:

1. ln a s vstem of alternating current diS- tribution, the combination ot' an linderground conduit. a long rigid upright hollow metallic pole. an alternating current tranaformer comprising an iron ycore bear ing two inductiwlv related windings, located within Said pole. the said transformer extendingV upon certain radii substantially from one inner wall ol' the pole to the other and on other radii leaving substantial interstices between the transformer and the inner wall of the pole. conductors connected to one ot the transformer winding` leading through the hollow' interior ot the pole and Vtrom the base thereof into said conduit, and coiuluctora` connected to the other transformer winding leading through the hollow interior ot the pole to the top of the pole and thence aeriall'v to distant points, and a bod)v ot oil contained within the pole and in direct contact' with the walhl thereof and in which botlv ot oil the transformer is immersed. wherelrv the transformer is protected from moisture within the pole and conduit and from lightning dieichargcA into the pole. and whereb)v the heat liberated within the transformer is con veved b v convection curl-enteA ot' oil traversing said interstices trom the trans't'ormer to the long upright metallic wallsl ot. the pole.

ln a svatcm ot' alternating current diav tribution. the conlbination of a long rigid hollow metallic pole adapted to be set upright in or upon the artl1. an alternating current transformer comprising an iron core bearing two inductivelv related windings, located within .aaid pole. primar)7 and secondary conductora.connected to said transformer windings` leading from said transformer through thel hollow interior ofthe pole. certain of V aid conductors extending aeriallv from the top of the pole to distant points. and a bodv ot oil contained within the pole and in direct contact with the v. alls thereol' and in which body of oil the trans former is immersed, whereby the transmy name this 27th day of December, A. D. former is protecteiL from lightningr dis- 1912 1 charges into said pole, und whereby the heat; FDMUWD O SCHVEITZER liberated in the transformer is conveyed by A l 5 convection currents of oil to the long up- 'Ytnesses:

right niet'nlie walls of the pole. LEONARD V. NOVANDER,

In witness whereof, vI hereunto subscribe LESLIE Fiucmz.

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