US487819A

US487819A - Bridge

Info

Publication number: US487819A
Authority: US
Publication date: 1892-12-13
Anticipated expiration: 1909-12-13

Description

No. 487,819. Patented Dec. 13, 1892.,

UNrrn TATES ATENT Gr mes,

LEYVIS BARNES, OF PHILADELPHIA, ASSIGNOR TO WILLIAM A. NICHOLS, OF

WAYNE, PENNSYLVANIA.

BRIDGE.

SPECIFICATION forming part of Letters Patent No. 487,819, dated December 18, 1892.

Application filed March 5, 1892. Serial No. 423,924. (No model.) I

' To all whom it may concern.-

Be it known that I, Lnwls BARNES, a citizen of the United States, and a resident of Philadelphia city and county, State of Pennsylvania, have invented certain new and useful Improvements in Bridges, of which the following is a specification.

My invention relates to bridges, and more especially to that class of bridges which may be termed portable and which are adapted to be used in roadways where there are small streams, wet or boggy places, drains or places for waste water, or culverts for railroads and the like; and it has for its object to improve the construction of these bridges, whereby they are best adapted for the purposes set forth.

My present invention may be termed an improvement on the bridge covered in my patent, No. 392,094, of October 30, 1888, and, while it is especially adapted for use in connection with such a bridge, it will be understood that it may be applied to other bridges to which it is adapted.

Referring to the accompanying drawing, 1 have shown a perspective view of the bridge embodying my improvements, some of the parts being cut away to more clearly show the. structure.

In the use of a bridge of such a character it is sometimes desirable to provide means which shall more firmly and securely hold the bridgein position and which shall form guides for the water passingthrough the bridge, so as to direct it more perfectly toward the center of the bridge, as well as to prevent the banks from caving in or washing away from the sides or around the bridge, and it is in order to provide means to overcome this objection that my present invention is made.

In the drawing, A represents a bridge of the character referred to, consisting, essentially, of the bottom sills B B, upon which a number of truss-pieces or girders 0 rest, which support the plates D, and which plates, together with the truss-pieces, form a framework to which the covering E may be attached when desired. Connected to a bridge of this character is what may be termed a wing or wings, forming an approach to the bridge, and these wings F are shown in the present instance as consisting of sill-plates G, which may be of any desired material and are preferably arranged belowthe base-plates B of the bridge and are connected therewith in any 5 5 suitable manner, as by a plate G, shown asof metal, secured to the under side of the base B and the upper side of the sill G. In some instances the sill-plate G may be dispensed with, the plate G acting as a sill. Extending from the sill G or the plate G to some portion of the bridge, as to the truss-pieces O, is a stringer or plate H, and this is shown arranged at an angle and preferably being a T- bar of metal, although, of course, it may be of other suitable material. Between this stringer and the base are a number of standards or connecting-pieces I, which may be bolted or otherwise secured to the parts to form braces therefor. These wings are shown in the present instance as extending parallel with the bodies of the bridge; but of course they can be extended at an angle, if desired, and instead of projecting below the base of the bridge they may be at a level therewith. These wings may be covered with the same material that covers the bridge, as shown at E, or they may be covered with other material to suit the convenience of the user. The sills G may be provided with holes g, into which bolts, spikes, and other securing devices may be fitted to form additional anchors for the approach and bridge.

While I have shown a simple and effective embodiment of my invention, it is obvious that the shape and construction thereof will vary to suit the difierent requirements or the purposes to which it is intended; but it will be seen that when constructed substantially inthe manner indicated thewings form guards for the bridge to protect the banks at the ends of the bridge, as well as guides for the water, and when the sills are depressed, as shown, they form anchors for the bridge to prevent it being washed away in case of excessive 5 pressure of water. These wings can be made as a part of the bridge and sold with the bridge or may be made separate and adapted to be attached to the bridge on one or both ends or on one or both sides of each end, as is :00 required by any particular use of the bridge.

lVhat I claim is--- 1. An approach for a portable bridge or ditch-covering, consisting of the sills, stringers, and brace-pieces forming wings adapted to be secured to the end of the bridge, as and for the purposes set forth.

2. The combination, with a bridge or ditchcovering, of the wings attached to the ends of the bridge and consisting of sills, stringer, and connecting-pieces, forming approaches to the bridge, substantially as described.v

3. The combinatiomwith thebridge orditchcovering consisting of a framework, of the wings connected thereto and having a sill extending below the base of the bridge and a stringer connecting the sill to the bridge, substantially as described.

4. The combination, With the bridge, of the wingconnected thereto and comprisingabasepiece having holes for the reception of anchors, a stringer connecting the base-piece to LEWIS BARNES. Witnesses:

WM. 11. R. LUKENS, WM. H. DIETRICH.