US918643A - Concrete beam. - Google Patents

Description

P. AYLETT & J. S. BANKS. CONCRETE BEAM.

APPLICATION FILED D30. 27, 1906.

1 918,643.- Patnted Apr.20, 1909.

qpm mm'mmm \YK' 4 0,

in: "man's FITERS C0,, wAsnmarou, n. c

, from the upperand lower UNITED STATES PATENT OFFICE.

BANKS, OI" PORTSMOUTH, VIRGINIA.

PHILIP AYLE'IT AND JOHN SCOTT CONCRE TE BEAM.

Application filed. December 27, 1906.

T 0 all whom it may concern:

Be it known that we, PHILIP Avnnrr and JOHN S. BANKS, citizens of the United States, residing at Portsmouth, in the county of Norfolk and State of Virginia, have invented certain new and useful Improvements in Concrete Beams; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to concrete structures.

The object of the invention is in a ready, thoroughly practical and comparatively inexpensive manner to construct concrete beams, columns, girders, pile caps, etc., or effectively to shield the metallic members of existing or proposed structures, or members made of wood or other material, which require protection from destructive agents.

In the accompanying drawings, forming a part of this specification, and in which like characters of reference indicate corresponding parts,-Figure 1 is a transverse sectional view, showing the manner of protecting a metallic beam or girder; Fig. 9. is a perspective detail View of the clamp shown in Fig. 1; Fig. 3 is a perspective detail view, showing a modification of the clamp shown in Fig. 1; Figs. 1 and 5 are fragmentary detail views, in perspective, of other modified forms of clamps; and Fig. (3 is a view in elevation, partly in section, of a modification of the structure shown in Fig. 1.

One form of carrying out the invention in the protection of the beams or girders of existing or proposed structures, is shown in Figs. 1 and 2. As shown in Fig. 1, the skeleton frame consists of furring t of metallic bars or strips, which are bent to the appropriate form to surround and be spaced from the girder or beam 5, the upper and lower terminals of the furring members being connected by straight furl-ing members '6. The furring members are held spaced flanges of the girders and confined therewith, by clamps, one of which is shown in detail in Fig. 2, and comprises a base plate 7 the terminals of which are bifurcated or incised on curved or straight lines 8 and 9, the two diagonallyopposite tongues 10 formed by the incisions being bent around the flanges of the girder, and the two tongues 11 being disposed at Specification of Letters Patent.

Patented April 20, 1909.

Serial No. 349,673.

right angles to the base and provided with orilices 12 to receive the fur-ring (3. The furring l and (3 are secured together at their terminals by rivets or bolts 13. Secured to the exterior of the furring -l and (3 is wire netting, expanded metal, or herringbone lathing 1 1-, which is held combined with the furring by being wired thereto, or in any other manner, and to the exterior of the sheathing formed by the metal is applied a coating of plaster is. YV hen this plaster has hardened, concrete 23 is supplied to the space between the skeleton frame and the girder in any preferred manner, as by being pumped therein, and when the concrete sets the entire girder will be thoroughly pro tected against any destructive agent.

It is to be understood that the skeleton frame or mold shown in Fig. 1, and which consists of the furring and 6, clamps, sheathing and plaster surface 15, may be applied to a girder already erected, or to one that is to be positioned. It is also to be understood that this protective cement structure is equally adaptable for use in connection with wooden or other girders, and as this will be readily understood, detail description thereof is omitted.

Instead of employing the form of tongues 11, shown in Fig. 2, these tongues may have their upper portions bent to lie parallel with the base plate 7, as shown at 16, Fig. 3, and to these inturned ears or projections, the furring (5 will be secured as by being riveted, bolted or wired thereto.

In the modification shown in Fi 1, the tongue 17, which corresponds to the tongue 11 in Fig. :2, is straight, that is, is devoid of a curved edge, while in the modification shown in Fig. 5 the tongue 18, that corresponds to the tongue 16 in Fig. 3 is extended, on both sides, laterally some distance beyond the edges of the beam flanges in order to permit the placing of a larger amount of cement on the steel structure.

In the modification shown in Fig. 6, the tongues 19, that correspond to the tongues 11 in Fig. 1, are devoid of the orifices 12, and in lieu thereof their outer edges are provided with notches or seats 20 that are designed to be engaged by the furring 21 which is seated in the notches, and bent to the appropriate form, the free ends 22 being connected in any preferred manner as by riveting, wiring or the like. In this latter arare simple in construction, they rangement the furring is constructed of a single piece, instead of four pieces, as shown in Fig. 1.

It will be seen from the foregoing, that although the improvements herein will be thoroughly effective and may be carried out without the requirement of any particular form of machinery for the purpose.

Having thus described our invention, what we claim as new and desire to secure by Letters-Patent, is

l. The combination with a girder, of clamps secured thereto,upper and lower furring members secured to the clamps, lateral furring members secured to thefirst-named furring members, an open-work sheathing secured to the exterior of all the furring members, an exterior plaster surface applied to the sheathing, and an interior concrete filling disposed around the girder and interit i I r i r 1 I I f 1 locked with the tuning members and with the sheathing.

2. The combination with a girder, of clamps secured to the flanges thereof, upper and lower furring members secured to the clamps, lateral furring members secured to the first-named furring members, an openwork sheathing secured to the exterior of all of the furring members, an exterior plaster surface applied to the sheathing, and an interior concrete filling disposed around the girder and interlocked with the furring members and with the sheathing.

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

PHILIP AYLETT. JOHN SCOTT BANKS. Witnesses G. M. PAYNE, XV. H. T. LYON.

Images