US314728A

US314728A - Elevated railroad and bridge

Info

Publication number: US314728A
Authority: US
Publication date: 1885-03-31
Anticipated expiration: 1902-03-31

Description

(No ModeL) 2 SheetsSheet 1.

F. SOHMEMANN.

v ELEVATED RAILROAD AND BRIDGE. No. 314,728, Patented Mar. 31, 1885.

(No ModeL') 2 Sheets-Sheet 2. F. SOHMEMANN. ELEVATED RAILROAD AND BRIDGE.

Patented Mar, 31, 1885.

WITNE ES:

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3NVENTOR:

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FRIEDRICH SOHMEMANN, OF PHILADELPHIA, PENNSYLVANIA.

ELEVATED RAILROAD AND BRIDGE.

SPECIFICATION fOIming part of Letters Patent No. 31%,728, dated March 31, 1885.

- Application filed February 28, 1884. (No model.)

sylvania, have invented a newand useful Improvement in Bridges, Elevated Roads, 810., which improvement is fully set forth in the following specification and accompanying drawings, in which- Figure 1 is a side elevation of a bridge embodying my invention. Fig. 2 is a transverse section thereof. Fig. 3 is a side elevation, partly sectional, of the lower portion of one of the columns. Fig. 4 is a vertical section of Fig. 3. Fig. 5 is a side elevation, partlyv sectional, of the upper portion of the column. Fig. 6 is a vertical section thereof. Fig. 7 is a side elevation, enlarged, of portion of the reversed arches of the bridge, including por-' tions of the ties thereof in vertical section. Fig. 8 is a transverse vertical section of Fig. 7. Fig. 9 is a top View of one of the couplings of the arches. Fig. 10 is a longitudinal vertical section thereof. Fig. 11 is a partial side elevation and partial vertical section of portion of an auxiliary arch of'the bridge. Fig. 12 is a transverse vertical section thereof. Fig. 13 is a side elevation, partly sectional, of the roadway and crown of the auxiliary arch. Fig. 14 is a transverse vertical section of Fig. 13. Fig. 15 is an enlarged view, partly sectional, of a portion of Fig. 2. 1

Similar letters of reference indicate corresponding parts in the several figures.

My invention consists of a bridge provided with a longitudinal series of reversed arches intersecting each other between their'ends and united at their points of intersection.

It further consists in a bridge having reversed arches extending in the transverse di rection thereof.

Itfurther consistsin a bridge having reversed arches extending in the longitudinal and transverse directions thereof.

It further consists in a bridge having rcversed arches and auxiliary arches, both extending in the longitudinal direction thereof,

arranged in series and secured together.

It further consists in a bridge provided with a series of connected reversed arches and locks and lower arch, and are secured to them.

It further consists in a column consisting of inner pipes and an outer pipe, the latter being screw-threaded for the attachment of laterallyextending parts.

It further consists in a column provided extend across the space between each upper with a saddle having a convex top, in combination with a bent sleeve fitting on said saddle, a cap which holds said sleeve down on the latter, and a lower chord, the sections of which are screwed into the ends of said tube.

It further consists in a tubular column the lower section of which is in combination with a sleeve which is screwed directly upon it, and provided with external tenons for receiving the ends of the tubular chords.

It further consists in a bridge having longitudinal and cross chords or arches in reversed order, and connecting-couplings, combined and operating substantially as hereinafter set forth and cla.med.

It further consists in a bridge having two intersecting chords or arches, in combination with a coupling attached thereto at their intersection, said coupling being providcdwith external tenons for attaching one chord or arch, a screw-threaded inner portion for attaching the other chord or arch, and tenons which extend inwardly from said outer portion of the coupling nearly to said inner por tion thereof, and serve as braces.

It further consists in an arch-truss consisting of horizontal upper chords formed of tubes attached to a coupling by screw-threads, and a lower chord forming an arch, bot-h connected by means of vertical columns and screwthreaded hollow tenons, all substantially as hereinafter set forth and claimed.

Referring to the drawings, A represents the columns of the bridge, the same consisting of a series of tubes inclosed one within the other, resting on a common base, a. The outer tube terminates at top below the road-bed of the bridge, and is screwthreaded for the connection of a sleeve, 13, from which project in lon gitudinal and transverse directions three tenons, B B, the tenons B having fitted to them Resting 011 the top of the inner. tubes of a for the same, which consist of devices which column is a saddle, D, on which is supported a sleeve, D, to which are screwed the ends of the tension or lower chord, E, of adjacent spans of the bridge, it now being seen that the two chords E form reversed arches extending in the longitudinal direction of the strength is added to the structure.

Surmounting the saddle D is'a cap, D, which is fitted to an upwardly-projecting tubular extension of said saddle, the sleeveD' passing through an opening in said :extension while resting on the saddle- .Fitted to a tenon, B, and resting thereon, is the transverse upper chord, F, andscrewed to a boss, ,D,which projects downwardly .i'rom' the extended portion of the saddle,isthe transverse lower chord, G, it being noticed that the two chords F'G form reversed arches extendingin the transverse direction of the bridge from each pair of columns. The reversed arches at their intersections, passeach other by means of couplings H, to whose ends the arches are connected, the compressionchord being fitted to tenons onthe outer portionsot' the couplings,and thetension-chords .being screwed to the inner portions of said couplings, (see Figs. 9 and 10,) the outer por-- tion of the couplings having withinitbossesv b, which extend inwardly nearly to the inner portionof the coupling, and acting as braces therefor when under strain, thus vastly increasing the strength of the coupling and the ability to endure the compression to which it maybe subjected.

The roadway proper is-constructed of a series of four longitudinal singlejarches, .upon which rest thehorizontal upper chords, which latter carry the rails or-roadway.

The construction is as follows: Running fromone transverse reversed arch F G- to another isa series of arches, K L M, the :successive divisions of whichare united by couplings N, to the bosses of whichthelengths constituting thearches are screwed.

V Rising from the couplings N are bosses which receive looselyupright tubes carrying on their upper ends Ts orcrosses P,.to-which the uprights are screwed. Thesecrosses 1? have arms orbosses extending either way in longitudinal direction of the bridge, and receive,bymeans,0f ascrew-thread,the tubes Q, which form the horizontal upper chord. The crosses 1 also have bosses extending intransverse-direction to receive tubes for lateral bracing. The couplingsN also have laterallyextending bosses to receive tubes to brace the arches K L M laterally. If desired and found essential, the sets .of arches carrying a line of roadway maybe laterally braced, similar to the bracingemployed for the arch itself.

Mounted on'the crosses P, or made integral therewith, are castings, which have a recess, ,0, formed therein to receive a rubber or. similar cushion, R, on which the rails are placed,

if desired. arches reducethe length of thespan onwhich the latter being secured in position by means of clamps, which are bolted to the horizontal upper chord or to the crosses and against the flange of the rail. It is evident that at theabutments proper anchorage must be provided to sustain the tension of the reversed arch or chord E, as well as proper trussing to brace the column against the action of the chord or arch O. The caps D may be closed at top, or may be arranged to receive lamps, statuary, or other articles of use or ornamentation, as is evident.

Referring to Figs. 7 and 8, the crowns of the main and cross arches or chords are respect- 8o ively connected by means of sleeves O, fitted over the tubes of the main trusses, and secured by a set of rings, G, the cross arches orchords being attached tosaid sleeves by screw-threads,

as at d,and maybe. connected by cross=braces,

It will'be seen that the, reversed.

the load is acting a distancaequat to thelength from the crossing to crossing -,point .of the arches, from which points suspension andtruss- 9O ing are performed. The longitudinalintermediate single-archtrusses reduce the,load.on; the

main-arch trusses in the .present case {sixtenths, theother four-tenths going directly to .latter is self-regulating in regardto expansion and contraction by changes, of .temperaturefor the inverted arches. Inthis respect the longitudinal single-track arches .are provided for by.means of the lock arrangement in the centers of the trusses.

Thevarious tubes or pipes .employedforthe chords, v8m, are formed of wroughtironor steel, and the connections or couplings of .caststeel. The hollow roundshape of the details of construction is employed, owing tobeing perfect for compression and tension, ,first, on

account of the shape of the section in regard to the moment of resistance, and, next, because there is no cramping of thematerial influenced by the changeof temperature. There-.isalso presented the least possible surface for Windpressure. It will also be seen that rivets flanges, and .bolts are dispensed with, thus vastly reducing the weight of the structure,

and there is generally a reduction both in Weight and expense of the bridge, besides which the bridge has a light andgracefulap- ,pearance, it being evident that the structure is serviceable .for elevated railroads.

I am aware that it is not new to construct a bridge with raised arches on one side and reversed arches on the other, thesearches being connected by bars ,or locking-pieces toa-horizontal base.

I am also aware that it is not new ;to con-, struct a bridge with two parallel reversed arches and an intermediate raised arch, each the cross-arches ofthe main posts, reducing the bridge, and the reversed arches being conthreaded for the attachment of laterally-exnected to the raised arch or arches by interposed braces. v

I am also aware that it is not new to make a bridge with two parallel raised arches and one reversed arch, the lines of the reversed arch and the upper raised arch intersecting, and these arches being connected together by interposed pieces both between their points of intersection and beyond the latter. I therefore do not claim any of these constructions and combinations of arches and interposed pieces; but,

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

1. A bridge provided with a longitudinal series of reversed arches, O E, intersecting each other between their ends and united at their points of intersection, substantially as set forth.

2. A bridge having reversed arches extending in the transverse direction thereof, sub stantially as and for the purpose set forth.

3. Abridge having reversed arches extending in the longitudinal and transverse direc tions thereof, substantially as and. for thepurpose set forth.

4:. Abridge having reversed arches and auxiliary arches, both extending in the longitudinal direction thereof, arranged in series and secured together, substantially as and for the purpose set forth.

5. A bridge provided with a series of corn nected reversed arches and locks for the same, which consist of devices which extend across the space between each upper and lower arch, and are secured to them, substantially as set forth.

6. A column consisting of the inner pipes tending parts, substantially as set fort-h.

7. A column provided with a saddle, D, having a convex top, in combination with a bent sleeve, D, fitting on said saddle, a cap, D, which'holds said sleeve down on the latter, and the lower chord, E, the sections. of which are screwed into the ends of said tube, substantially as set forth,

8. The lower section of a tubular column,

in combination with a sleeve, B, which is screwed directly upon it, and provided with external tenons, B, for receiving the ends of the tubular chords 0, substantially as set forth.

9. The longitudinal and cross chords or arches in reversed order, as shown, and conneoting couplings, combined and operating substantially as and for the purpose set forth.

10. In a bridge, the combination of two intersecting chords or arches with a coupling attached thereto at their intersection, said coupling being provided'with external tenons for attaching one chord or arch, a screwthreaded inner portion for attaching the other chord or arch, and tenons b, which extend inwardl y from said outer portion of the coupling nearly to said inner portion thereof, and serve as braces, substantially as and for the purpose set forth.

- 11 An arch-truss consisting of horizontal upper chords formed of tubes attached to a coupling by screw-threads, and a lower chord forming an arch, both connected by means of vertical columns and screw-threaded hollow tenons, substantially as and for the purpose set forth.

FR. SOHMEMANN.

Witnesses:

JOHN A. WIEDERSHEIM, A. 1?. GRANT.

I It is hereby certified that in Letters Patent No. 314,728, granted March 31,1885,

for an improvement in Elevated Railroads and Bridges, the name of the patentee was erroneously Written and printed Friedrich Sohmemann, whereas it should have been Friedrich Schmemann; that the proper corrections have been made in the files and records pertaining to the ease in the Patent Office, and should be read in the Letters Patent to make the same conform thereto.

Signed, oountersigned, and sealed this 16th day of June, A. D. 1885.

[SEAL] n. L. MULDROW,

1 Acting Secretary of the Interior. Gonntersigned M. V. MONTGOMERY,

Commissioner of Patents.