US166387A - Improvement in splice-plates for metallic truss-bridges - Google Patents

Description

w. KATTE.

Splice-Plates for Metallic Truss Bridges.

N0. 166,387, Patented Aug. 3,1875.

Fig-l'r- Fig.2.

N PETERS` PHOTULFTHOGRAPHER, WASHINGTON. n c:v

UNITED STATES PATENT OFFICE WALTER KATT, OF ST. LOUIS, MISSOURI.

IMPROVEMENT IN SPLlCE-PLATES FOR. METALLIC TRUSS-BRID GES.

Specification forming part of Letters Patent No. 166,387, dated August 3, 1875 application led June-2l, 1875.

To all whom it may concern:

Be it known that I,WALTER KATTE, of St. Louis, St. Louis county, State of Missouri, have invented a certain new and useful Improvement in Splice-Plates for Metallic Trestle-Work, of which the following is a specification:

My improvement consists in a splice-plate cruciform in transverse section, and which breaks the joint ofthe metallic post or column, and which has lugs or eye-plates extending outside of the post for the attachment of the stays and braces.

In the drawings, Figure l is ahorizontal section through the splice or joint, Fig. -2 is a side elevation of a splice or joint in a central post. Fig. 3 is a side elevation of a joint in a side post. Fig. 4 is a transverse section, showing a modiication of the splice-plate.

The post or column is built up of compound angle-plates A, which are secured together at the edges by rivets B. The joint or splice of the post is shown at C. The splice-plate may consistof a number of radial plates, D D D, secured together at the center by two or four angle-irons, E E, and rivets F, as shown in Fig. l, or may consist of angle-plates D D, with a central distancepiece, G,between them, and rivets F passing diametrically through the plates D D and the angle-piece. In this form it is preferable that the angular distance w x should be just large enough to accommodate therivet-heads. The plates A are secured at the edges to the splice-plates by the rivets B passing through both. At I Iare shown eX- tensions of the splice-plate, which form ears or lugs for the attachment of the stays K and braces L. The horizontal diagonal braces are shown, at M, connected directly to the sides of the post-plates A by the eye-brackets N.

The lugs l may project from the post in one, two, three, or four directions, according to the position of the post or splice C in relation to the other parts of the structure to which connection is made.

The stays K, as shown, are tubular, but may be vof any other suitable strut-section. They end in two parallel ears, k, which are riveted directly' to the edges of the plates A, and connected to the lugs I by bolts fi, which pass through the end eyes of the braces L, as well as through the strut-ears and lugs I.

I claim as my invention- A l. The splice-plate with four radial wings, D, secured in the joint or splice ofthe post, substantially as set forth. A

2. The splice-plate, as described, with extensions I from the wings D, forming lugs for the attachment of the stays and braces, substan tially as set forth.

I WALTER KATT. Witnesses:

SAME. KNIGHT, CHARLES PICKLES.

Images