US1074268A - Concrete arch. - Google Patents

Description

G. D. KELLY & P. MAHONEY.

CONCRETE ARCH.

APPLIUATION FILED MAR. 29, 1912.

Patented Sep1;.3o,1913.

2 SHEETS-SHEET l.

G. D. KELLY a P. MAHONEY.

CONCRETE ARCH. APPLIOATIONTILBD MAB.. 29, 1912*.

1,074,268, Patented sept. 30, 1913.

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CHARLES D. KELLY PATRICK MAI-IONEY, 0F OAKVIEV, PENNSYL'VIMWIA;v

CONCRETE anon.

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Specification of Letters Patent. Application me@ Marchas; i912. serial No. 887,263.

Patented Sept. 30, 1913.

Be it lrnownthat we, CHARLES KELLY and PATRICK MAHONEY, `citizens of -the United States, residing at Oakview, county of Delaware, and Statev of Pennsylvania, have invented certain new and useful Improvements in Concrete 'Ar-ches, of which the following is aspecification.

Our invention relates'to improvements in concrete arches, the object of the invention being to provide an improved concrete arch which may be constructed without Vbracing i from belo-w, and which is efficiently reinforced by wires connecting verticall piers.

A further obj ect is to provide animproved construction of the character -described lwhich may be built .out from pier to pier from above, utilizing the reinforcing of the arch as a support-for the boards constituting the bottom or arch mold.

With these and other objects in vie-w, the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure 1, is a view in longitudinal section illustrating the arch showing the arrangement of supporting wires and boards. Fig. 2, is a view in transverse section on Vthe line 2-2 of Fig. 1. Fig. 3, is a plan view on a reduced scale, and Fig. 4, is a view in section on the line 1-4 of Fig. 1. Y I

In carrying out our invention, the piers 1,

1, Vare formed and on their upper portions are shaped as shownV at 2. In other words,

` these piers are provided with shoulders 3 which extend inwardly the desired distance to receive and support the end of the arch connecting the piers. As the piers are being built, when they reach a certain height,

U-shaped wires i are laid in the concrete and are provided on theouter faces of the `piers Vwith eyes 5.. At af higher elevation, Asimilar U-shaped Vwires 6 are laid in the piers, and they are' provided on` their inner ends with eyes 7. By reason of these U- shaped wires, they cannot pullout of the piers, and form perfect anchors. After the piers are completed, wires 8 are connected at their ends toV the eyes 5, and are drawn taut over the upper ends of the piers. Other `wires 9 are connectedV at their ends to the eyes 7, and these wires arerelatively slack. After the wires 8 are secured in place,

` boards or timbers (not shown) may be supported on these wires to alloW workmen to fmove out `over the same and connect the jwires 8 with .the wires 9 by means of hooks 10. These hooks vary in length, the shortest hook being centrally between the piers, l.and the longest hook adjacent the piers, so fthat while the upper ends of the hooks are all in alineinent, the lower ends are in the .arc of a circle and support this position.

timbers 11 against the sides of the` arch,

while transversely positioned boards 12 are:

supported on the wires 9 between the hooks 10. The timbers 11 and the boards 9 form-a -mold for the arch, but the arch is built out gradually from the piers toward the center. In other words, the concrete is placed first adjacent the piers, working, of course, from above. This first concrete will restupon the shoulders 3 of the piers, and working from both piers toward the center, the concrete gradually reaches the center of the arch. rIhis concrete is built out in instalments, allowing certain portions to set before other portions are added. vThen the concrete reaches the center of the arch, and becomes set, the timbers 11 and the parts 12 are removed. Portions of the wires and hooks will, of course, be embedded in the concrete structure, and any projecting ends may be the wires 9 in' The outer set of hooks 10` serve to holdy cut off and the surface suitably troweled so as to leave it smooth and free from obstructions. Y

By reason of this method, we are enabled to build the arch from above, without providing any supports underneath the arch which are diiiicult to place in position, difcult to remove, and add greatly to the cost of building.

Various slight changes might be made in the general form and arrangement of parts described without departing from ourv invention, and hence we do not limit ourselves to the precisedetails set forth, but'consider ourselves at liberty to make such changes and alterations as fairly fall within the .spirit and scope of the appended claims.

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

1. A reinforced concrete structure of the character described, comprising piers hav- "ing shoulders on their opposed faces at their upper-ends, wires anchored in the piers and forming eyes at the inner and outer faces of the piers, wires secured to the eyes on the outer faces' of the piers and extended over the upper ends of the piers, other wires connecting the eyes at the inner faces of the piers, and longer than the distance between the piers, and hangers connecting the wires extended across the top of the piers with the last-mentioned wires, said hangers of different lengths, whereby the last-mentioned wires are arched, and concrete material extended from shoulder to shoulder of the piers, substantially as described.

2. A reinforced concrete structure of t-he character described, comprising piers having shoulders on their opposed faces at their upper ends, wires anchored in the piers and i' vforming Veyes at the inner and outer faces of the piers, wires secured to the eyes on the outer faces of the piers and extended over the upper ends of the piers, other wires connecting the eyes at' the inner faces of the Copies of this patent may be obtained for five cents each, by` adressin wires are arched, and concrete material ex-k tended froln shoulder to shoulder` of the piers,-said concrete extended over the upper ends of the piers embedding that portion of the wire on top of t-he piers'and embedding the hangers throughout the greater portion of their length, substantially as described.

In testimony whereof we have signed our naines to this specication in the presence of the subscribing witnesses.

CHARLES l). KELLY.

PATRICK xsl MAHONEY.V

' mark l/Vitnesses R. H. KRENKEL, H. STBAUss,

Cialis.k E. P'o'rrs.Y

Washington, D. C.

g the CommissionerV of Patents.

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