US1080525A - Reinforcing-pole. - Google Patents

Description

R. S'. ORR.

RENPORCING POLE.

APPLICATION FILED APR.5,1909

1,080,525. Patented Dec. 2, 1913.

ROBERT S. ORR, OF PITTSBURGH, IENNSYL FORCING POLE COMPANY, OF PITTSBUR PENNSYLVANIA.

VANIA, ASSIGNOR TO PITTSBURGH REIN- GI-l, PENNSYLVANIA. A CORPORATION 0F REINFORCNG-POLE.

Specification of Letters Patent.

Application filed April 5, 1909.

Serial No. 488,083.

To all whom if may concern Be it known that l, lonnn'r S. (hut, of(

Pittsburgh, in the county of Allegheny and State of lcnnsylvania, have invented a new and use't'ul improvement in Reintorcing Poles, ot' which the following is a tall, clear, and exact description, reference bcinplr had to the accompanying drawings, forming part of this specification, in which- Figures 1l and 2 are vertical Sectional views showing two different forms ot' my invention. y, Y

My invention relates to reinforcing; worn or partly worn or decayed wooden Ipoles by the use of reinforced concrete and is designed to provide a system in which it is not essential to connect. both ends of thereinforcing members to the pole, as shown in my United States Patent 892,880, dated July 7, 1908.

In the drawing, 2 represents the worn or rotted portion of the pole which usually extends slightly above and slightly below the ground level, as shown. in treating,r such poles, I practically clean away the decayed or worn portions to exposesound wood1 l'. then'secure the upper ends of reinforcing bars 3 to the pole above the weakened por tion. This may he done by driving spikes 4 through suitable holes in the bars, which in this case arel shown as rolled angle bars. A series of these bars may he arranged around the pole with their upper ends spiked to it, as shown, their lower ends depending Within a dug out portion ofthe ground surrounding` the pole, and extending below the weakened portion. In order to merevlrmly connect. the concrete to the, pole, I may also drive in spikes or connecting members 5 below the weakened portion. After these reinforcing parts are in place, they are then embedded in a body ot plastic material, such as concrete or coment 6, which may be molded in any desirable manner, and preferably extends above and below the reinforcing members so as to inclose them, though this is not. essential.

ln Fig. 2, l show a form similar to that of Fig. L except that. small channels or I- beams 3 are used in place of the angle bars of Figs, 1 and 2. ln this case also, I show the reinforcing,r members` as eirtending4 above the concrete.

lt will be observed that in all the forms of my invention illustrated the flanges o' the bars not only increase the compression strength of the bars themselves, but that they also engage the concrete i'n a manner to oppose the maximum resistance of the latter to compression or buckling strains in the members. ln this manner the concrete not only acts as a filling and anclioringr body, but it is made both directly and through the bars to act itself as an ctlicient compression member.

The invention may be applied to new poles, the form and size of y members may be varied` and they may be attached to the pole in ditlcrent ways, without departing from my invention.

l claim:

The combination with a pole having a weakened base portion ot' reduced cross-secA tion, ol a reinforce therefor, said reinforce comprising a body of concrete surrounding the pole from a point below its weakened portion to a point above the same, and anchored to the pole, and metallic bracing,y members secured to the pole at their upper ends and extendino' ohliquely downwardly and outwardly witliin the concrete body to points below said weakened portion, said bracing members having laterally extended flanges which increase their compression strength, and which also engage the concrete to oppose the resistance ol` the latter to compression or buckling strains in the members; substantially as described.

ln testimony whereof, l have hereunto set my hand.

ROBERT S. OBR. Witnesses:

L. GREY, H. M.- CoRwIN.

Patented Dec. 2. wir?.

the reinforcing"

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