US841064A - Telegraph and trolley pole. - Google Patents

Description

No. 841,064. PATENTED JAN. 8, 190'!- v T. P. STANLEY. TELEGRAPH AND TROLLEY POLE.

APPLICATION FILED FEB. 17, 1906.

PATENTED JAN. 3, 1907.

T. P. STANLEY. TELEGRAPH AND TROLLEY POLE.

APPLIOATION FILED PEB.17, 1906.

4 SHEETS-SHEBT 4.

human STATES PATENT oninon. I THOMAS P. STANLEY, or ATHENS, enoncm. i TELIEGIIRAPH AN]? TROLLEY POI-E.

and trolleypoles, which are constructed of:

cement or concrete'reinforced with an embedded irotn'fiaming. These posts and bars are more resistant to bending and pressure than common posts of wood and, moreover,

have the great advantage overwooden posts" that they are not afiected by rot and decay,

A further object of my invention is to construct atelegraph or trolley pole with integral insulatorearms or cross-arms, so that the com leted concrete pole shall constitute afmono 'th,, requiring no external bolts or 'fastenings. The poleis molded with steps alternating on opposite sides-and the. cross-' arms with screw-threaded stems or pins for the reception of the usual insulators. Furthermore, by rolonging the reinforcing members beyond the top and bottom of the pole I provide an excellent lightning-conductor, which thoroughly protects the pole and dispenses with the necessity for the usual lightning-arresters attached thereto.

In the annexed drawings, Figure l represents a longitudinal elevation of my pole in section. Figs. '2, 3, 4,. and 5 are enlarged section views. Fi 6 is a cross-section of the pole, showing t e radial arrangement of the brace-rods. Fig. 7 is a' view of the top or bottom plate; and Figs. 8, 9, and 10 arerespectively side elevation, top plan, andv end views in section of the cross-arm.-

In the manufacture of my improved telegraph or trolley pole a mold or flask of a proper length for the'intended post is employed, and the mold being properly'fashioned for the-fd'esign of the post the iron pipe or core and. the bracing-wires are arranged, as hereinafter described, so as to be embedded in the material and form the reinforcing members to hold the material firmly together and brace it at all points. The

plastic material-cement, concrete, or other suitable materialis placed by suitable means into the formed mold, so as to sur- Specification of Letters Patent; Application filed February 17,1906. Sei'ialNo. 301,675. r

Fig. 2.

Patented Jan. 8, 1967.

round the metallia" framework and fill the mold, after which" the mold may be subjected to pressure for compressing the plastic material, or the material may remain in the mold until it-becomes solidified and hardens,

when the formed post is removed.

The improved post comprises a body portion 1 of concrete or like material and prc vided-wit'h a core, preferably of iron pipe 2,

which is braced against the side strain and pressure by wires or rods 3, constituting the tension members of atruss. I preferably vemploy twisted barbed wires, as theseofier .a greater surface fore agement with the concrete than bare smoot wires The wires 3- pass through and are secured to topand bottom anchor-plates 4, which may be nuts screwed to the endsol the central pipe or' tube 2, and at their centers pass through slots or holes in the ends of brace rods or struts 5, projectin from the core, opposite braces 5 being in horizontal alinement, but the several opposite pairs or sets being in different horizontal planes, thepurposeof this arrangement being'to prevent the weakening of the concrete in any plane by the displacement due to thebr'aces. Each wire 3, with its central brace or strut 5,.thus constitutes, with the central core-pipe 2,.a truss, and by providing six or eight of these trusses in radial planes" about the core the post is strains.

Fig. 1 clearly shows themanner in which I provide the post whendesirable with. a perfec't lightning-conductor. Atthe top of the post the-wires, after passing through. holes 6 in the top plate 4, are so arated and carried up through the concrete odyand project as many points, while at thebottom the wires are twlsted together below the bottom plate, being carried down, preferably, eighteen inches or'two feet,- so as to constitute a good ground connection for thelightning-conductor. I am thus'enabled to utilize the reinforcing metallic framework to afiord a complete protection against lightning and dispense with the lightning-arresters with which telegraph and trolley poles are usually prostrongly bracedagainst side pressure and vided. When the lightning-conductor isnot required,'th.e pole is finisied, as shown in For the purpose of enabling the pole to be easily mounted .I provide steps 7 in staggered arrangement. Each step is moldward pressure by means of strain-wires 13 on either side of the central core-pipe, having their ends securedto plates 14 and passing 'over supports or brackets 15', projecting from the central core 2. The strain-wires 13 and core 11 thus constitutea truss and provide an exceedingly strong andrigid su l port for the weight and strains to which t e insulator-arm is subjected. I may dispense with the brackets 15 by placing plates under the central portion of the wires 13 as the ce- 'ment is being placed in the mold to retain the wires in position until the cement liardens.

The insulator-pins 16 are molded integral with'the cross-arms and are reinforced by. a

metal core or stem 17, having spurs project- .ing therefrom to better enga e the cement.- In addition to the .fact'that dispense with separate insulator-pins requiring special fastenings, the concretepin itself being an insulatorfurnishes additional security from the esca e of the electric current.

en the pole is to be used as a support fOInfiI'OllB'Y-Wll'GS, the parts of the cross-arm are. reversed; so that the insulator-pins ro jest downward instead 'of upward, as 'i lustrated. It is obvious that the (pole maybe used without the cross-arms an that its use is not. restricted to telegraph, telephone, or trolley poles.

- 'While I- have-described =Iny pole as having a, central core or pipe in the couplingstruc- 'ture, Imaywithdraw the core after the csmenthasrset, asthe'truss-wires 3 afiord'su fd.

cient strength against 1 bending to provide a rigid and-strong pole. In order-to withdraw the central core, I joinopposite'brace rods or struts 5 by meansof a slee'veor ring surrounding the core and support the braces 8 in a similar manner. j I

The advantages of my improved pole'will beapparentto those skilled in the art. In additwn to the' increased rigidity afiorde'd by my construction I am enabled. to produce a ole which is cheaper than either wood or men and which is not liable to deteriorate by ex osure to the elements.

' aving described my invention, I claim- 1. A telegraph or trolley pole comprising a continuous cement or concrete body having embedded therein a plurality of longitudinal truss members, each member extending substantially the length of the pole in a plane radial to the center thereof; substantially as described.

2. A telegraph or trolley pole comprising a continuous cement or concrete body having embedded-therein a plurality of longitudinal truss members, each member extending sub-- stantially this length of the pole in a plane radial to the center thereof securedto anchor-plates at either end of the pole; sub stantially as described.

'3. A telegraph or trolley pole comprising a continuous cement or concrete body having embedded thereina'plurality of longitudinal truss members, secured to anchor-plates-at either end of the pole, and passing ove-r central struts or braces; substantially as described.

4. A telegraph or trolley pole oomprising a continuous cement or concrete body having embedded therein a central metal core and a plurality of longitudinal truss members; substantially-as described.

5. A telegraph or trolley pole corn rising 'a continuous cement or concrete bod avinga central metal core provided with plates at each end and intermediate brace rods or struts, and a plurality of truss men hers passing over said struts and securedto anchor said anchor-plates; substantiallyas described.

.6. A telegraph or trolley pole corn rising a continuous cement or core rate body saving a central metalcore provided with anchorplates at each end and intermediate brace rods orstruts, and a plurality of truss members passing over said struts and secured to said anchor-plates, and having their ends .projecting beyond the top and bottom of said pole to constitute a lightning conductor; substantially as described. i

7. A telegraph or trolley pole comprising a continuous cement or concrete body and integral cross-arms, having a main central core Ioo with branches in said cross-arms, anchorplates'secured to the ends of the main and branch cores, intermediate brace rods or struts, and a lurality of truss members=passing over sai struts and secured to said anchor'-plates; substantially as described. l

8. A telegraph-or trolley pole of plastic material, having embedded therein a'metallic reinforcing-framework, comprising a central core having terminal anchor-plates and intermediate brace rods or-struts and longitudinal brace members, radially disposed about said core, passing over'said struts and se-, cured to said anchor-plates; 'substantiallyas described.

9. A telegraph or trolley poleof plastic material, having embedded therein a metal lic reinforcing-framework, comprising a central core having terminal anchor-platesan'd intermediate brace rods or struts, longitudinal brace members radially disposed about said core passing over said struts, and sesame! I a cured to said anchor-plates, and brackets 81- jecting stems constitnting the cores of melded ranged in staggered relation on opposite insulator-pins; substantially as described. 1o sides of said core substantially as described. In testimony whereof I aflix my signature -10. A telegraph or trolleypcle of plastic in presence of two witnesses.

5, aterial having embedded 6h rein-a metallic THOMAS P. STANLEY.

Mowing-framework compr' inga plurality v Witnesses: oif radially disposed trusses and integral JOHN W. WIER, ac Poss-arms, having a core provided with pro- J. H. HANDRQPIP.

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