US196154A - Improvement in tubular abridges - Google Patents

Improvement in tubular abridges Download PDF

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US196154A
US196154A US196154DA US196154A US 196154 A US196154 A US 196154A US 196154D A US196154D A US 196154DA US 196154 A US196154 A US 196154A
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Prior art keywords
tubular
improvement
abridges
tube
weakened
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D15/00—Movable or portable bridges; Floating bridges
    • E01D15/12—Portable or sectional bridges
    • E01D15/133—Portable or sectional bridges built-up from readily separable standardised sections or elements, e.g. Bailey bridges

Definitions

  • 'ERS FHOTO-LITHQGRAPHER. WASHINGTON.
  • Dv Q UNITED STATES GEORGE-Entire, or nEs MoIfNEs, IOWA.
  • Eigure 1 is a side view of the section of a tubular arch.
  • Fig. 2 is an end view.
  • the tubular arch is composed of channeled iron plates A A and flat plates B B, rigidly and closely bolted or riveted together, so as to exclude moisture from the inside.
  • To-the bottom side of this tube I rigidly bolt or rivet angle-irons G G, having the form of the letter L.
  • the vertical portions of these angle-irons form parallel flanges, between which the upper ends of the posts and bracerods D are secured by means of pins, bolts, or rivets (I, passed through eyes b.
  • the posts and bracerods were secured to the tubular arch by passing them through the tube, and using nuts and washers or shoulders. 'This weakened the tube, and involved safety devices for preventing. the nuts from working loose. Furthermore, the tube was weakened by perforating it, and the perforations allowed water to enter therein, which soon rusted and weakened it.
  • the tube is not weakened, nor so perforated that moisture can enter between the joints of the plates.
  • the drawing shows the angle-iron O 0 se- GEORGE ELIAS KING.

Description

G. E. KING. Tubular Bridges.
No. 196,154.. Patented Oct. 16, I871 ATTORNEYS.
N.PE|'ERS, FHOTO-LITHQGRAPHER. WASHINGTON. Dv Q UNITED STATES GEORGE-Entire, or nEs MoIfNEs, IOWA.
IMPROVEMENT IN TUBULAR BRIDGES.
Specification forming part of Letters Patent No. 196,154, dated October 16, 1877; application filed August 3, 1877.
To all whom it may concern:
Be it known that I, GEORGE E. KING, of Des Moines, in the county of Polk and State .of Iowa, have invented a new and useful Imtubular arches; and the nature of my invention and improvement consists in connecting the posts, counter braces, and the lateral braces to a tubular arch by means of pins, bolts, or rivets passed through angle-irons rigidly secured to the arch, and also through eyes formed on the posts and braces, as will be hereinafter explained.
In the annexed drawing, Eigure 1 is a side view of the section of a tubular arch. Fig. 2 is an end view.
Similar letters of reference indicate corresponding parts.
The tubular arch is composed of channeled iron plates A A and flat plates B B, rigidly and closely bolted or riveted together, so as to exclude moisture from the inside. To-the bottom side of this tube I rigidly bolt or rivet angle-irons G G, having the form of the letter L. The vertical portions of these angle-irons form parallel flanges, between which the upper ends of the posts and bracerods D are secured by means of pins, bolts, or rivets (I, passed through eyes b.
Prior to my invention the posts and bracerods were secured to the tubular arch by passing them through the tube, and using nuts and washers or shoulders. 'This weakened the tube, and involved safety devices for preventing. the nuts from working loose. Furthermore, the tube was weakened by perforating it, and the perforations allowed water to enter therein, which soon rusted and weakened it.
By my invention the tube is not weakened, nor so perforated that moisture can enter between the joints of the plates.
The drawing shows the angle-iron O 0 se- GEORGE ELIAS KING.
Witnesses ALBERT M. BLODGETT, ALBERT H. PORTER.
.TTEN QFFIGE.
US196154D Improvement in tubular abridges Expired - Lifetime US196154A (en)

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