US916378A

US916378A - Corner-plate for concrete piers, &c.

Info

Publication number: US916378A
Application number: US41600408A
Authority: US
Inventors: James C Sunderland
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-02-15
Filing date: 1908-02-15
Publication date: 1909-03-23
Anticipated expiration: 1926-03-23

Description

J. G. SUNDERLAND.

CORNER PLATE FOR CONCRETE PIERS, 6w.

APPLICATION FILED 13313.15. 1908:

Patented Mar. 23, 1909.

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any desired height on said pier.

JAMES C. SUNDERLAND, OF KANSAS CITY, MISSOURI CORNER-PLATE FOR Specification of Letters-Patent.

OQNGRETE PIERS 80c.

Patented March 23, 1909.

Application filed February 15, 1908. Serial No. 416,004.

To all whom it may concern:

Be it known that I, JAMES C. SUNDERLAND, a citizen. of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain newv and useful In'lprovements in Corner-Plates for Concrete Piers, &c., of which the following is a specification.

My invention relates to improvements in corner-plates for protecting the corner of columns, piers, and pilasters composer of concrete or other plastic material; and one of my objects is to provide a corner-plate which may be reliably held in'place without the aid of anchors, bolts, or other extraneous fastening devices.

In order that the invention may be fully understood, reference will now be made to the accompanying drawing, in which:

Figure 1 represents a broken perspective view of a pier, the corners of which are protected by my corner-plates, which extend to Fig. 2 is an enlar ed cross section of the same on line ll lll. of Fig. 1. Fig. 3 is an enlarged broken perspective of one of the cornerplates. Fig. 4- is a plan view of a modified form of corner-plate.

In carrying out the invention, I prefer to employ sheet-metal strips bent into the de-. sired form, although plates cast in the proper form may be used. Each plate consists of a corner portion 1, from. which a pair of wings 2 extend at an angleto each other ap roximating ninety degrees, and a pair of f anges 3 extending inwardly from the wings at an obtuse angle to the latter.

In the modified form shownin Fig. 4, the' plate consists ofa rounded corner portion 1 a pair of wings 2 communicating with said rounded portion, and a pair of flanges 3 communicating with the wings.

In practice the corner-plates are placed in position in the corners of a mold A shown in dotted lines, Fig. 2, in which the pier B is formed. Then when the plastic material for forming said ier is poured into the mold,

a portion of it w' l flow through the openings 4, and thus securely hold the corner-plates in position after the plastic'material has set. I am aware that heavy angle-irons have been employed for protecting the corners of concrete piers, but they are not satisfactory for the reason that they are inconvenient to handle, and have to be anchored into the plastic material by bolts, or other extraneto the cost of construction. Furthermore, the heads of these fastening devices usually engage the outer surface of the angle-irons and give the work an unfinished appearance. An offset is also left between the upper. ends of the' angle-irons and the corners of the ally chamfered to their upper ends to prevent said corners from chipping Oh.

My devices requireno extraneous fastening devices, as they are reliably held in place by the material which flows into openings 4, and they give a finished appearance to the pier as all of their exposed portions are flush therewith.

Having thus described my invention, what I claim is: v

1. In combination with a pier or the like composed of a body of plastic material, corner plates for protecting the corners thereof, each plate consisting of a corner part, a air of wings each lying in the same stralght plane throughout extended from the ends of said corner part and lying flushwith the ad; j acent sides of said pier,- said win s being of comparatively considerable widt I'SO, as to extend along adjacent sides of the pier and being disposed at right angles to each other, and a flange extended inwardly from the end of each of said wings, said flanges being disposed at an obtuse angle to sald wings and being of considerable width so as to extend for a distance into the body of the pier or the like, said flanges each'being formed with a series of openings whereby the-material on opposite sides of the flanges extends through said openings and serves to lock the flanges against outward movement.

.2. A ier com osed of a materia and a p urality of corner elements, each of said elements embodying a corner art, wings extended therefrom and emhedded in the body so as to lie flush with-its considerable width w ich' form anchoring meansfor said element and strengthemn means for the body of plastic mater al, saI

ous fastening devices, which add materially piers, the corners of which latter are generbody of plastic outer faces, and flan es comparatively of flanges being related to the center of said In testimony whereof I afl-ix my signature, pier body so afs i210 iadliatke therefrom, (till; in the presence of two witnesses. center or core 0 t e 0( yein surroun e b said flanges the two flanges o f each corner JAMES SUN D ERLAND 5 e ement converging toward one another, WVitnesses: I

and the adjacent flanges of adjacent corner F. G. FISCHER, elements converging toward one another. M. Cox.