US828991A - Composite railway cross-tie. - Google Patents

Description

PATENTED AUG. 21, 1906.

J. H. G. WOLF. BOMPOSITE RAILWAY GROSS TIE.

APPLICATION I'ILBD FEB. 10. 1904.

WITNESSES,

Xwfl

'rnl' mulls rlrnu co, wunlhorun, u. c.

UNITED STATES P ATENT OFFICE.

JULIUS H. G. WOLF, OF SAN FRANCISCO, CALIFORNIA.

COMPOSITE RAILWAY CROSS-TIE.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application filed February 10, 1904. Serial No. 193,024.

To aZZ whom it may concern:

Beit known that I, J ULIUS HERMAN GEORGE WOLF, a citizen of the United States, residing at San Francisco, State of California, have invented a new, useful, and Improved Composite Railway Cross-Tie for either Street or Steam Railway Purposes, of which the fol lowing is a specification, reference being had to the accompanying drawings.

This invention relates to an improvement in the making of composite railway crossties.

The object sought is to present a composite cross-tie which in serving its functions as a tie shall possess every advantage of the wooden tie now in use and add thereto those qualities or requisites which wooden ties lack.

The stren th of a wooden tie lies in the strength of lts fibers, which are subject to decay. The strength of the composite tie rests in practically indestructible materials.

A practical embodiment of the invention is represented inthe accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corre sponding parts in all the views.

Figure l is a top lan view of the tie, the left-hand portion of it being shown complete with the rail upon it and showing on the right side of the medial line X Y the same view without the rail. A portion. of the open metallic reinforcement is omitted to more clearly show details under the rail-seat. Fig. 2 is a longitudinal sectional elevation of the tie, taken through one of the spike-bolts, showing the method of holding the rail to the tie and showing the open metallic reinforcement, portions of Winch are omitted to enhance the clearness of the drawings. Fig. 3 is a cross-sectional elevation through one of the same bolts, showing the method of rail attachment and showing the open metallic reinforcement placed Within and passing through the encircling stra s to which the spike-bolts are attached. ig. 4 is a drawing of one type of open metallic reinforcement known in the trade as expanded metal, and Fig. 5 is another type of the same reinforcement and known as wirecloth.

In carryin out this invention there is employed a bod y of concrete or artificial stone A, 1n which is embedded an open metallic reinforcement B. This "open metallic reinforcement may be either expanded metal, wire lath, heavy wire-cloth, or any metallic substance of similar character which serves the purposes of these materials in reinforcing concrete. This 0 on metallic reinforcement is placed trough-s raped, envelo ing the concrete on the bottom and the si es, as clearly shown in Fig. 3. The sheet of metal is to be in one continuous piece with the sides or webs formed by bendin the edges upward, as indicated by B in Fig. 3. In this manner it will protect the concrete from disruption when impact strains are brought upon it, the web or side members taking the cross bending strains, while the bottom portion will assist in preserving the integrity of the entire mass. The concrete may be cut away on the bottom, as shown in Fig. 2, so as to prevent centcnbinding of the tie and also to re duce its weight.

It will be observed that the metallic reinforcement is entirely independent of the attaching device for holding the rails to the tie. It consists simply of two enveloping straps C C under each rail, completely surrounding the concrete of the tie and sitting flush with the faces of the tie on sides, top, and bottom. Within these straps will pass the troughshaped metallic reinforcement. Hence the strain upon the medium for holding the rails upon the tie is carried by the body of the tie and not by any particular portion of the mass which might crack or disintegrate it.

The envelopin straps are pierced b slotted holes, one ho e to each strap, on t 1e top surface, as shown in the plan view, Fig. 1. Through each hole is a short bolt D, termed a spike-bolt, made with a head in the shape of spike, as is now used to hold down rails with the ordinary wooden tie. The nut E (shown in Figs. 2 and 3) engages the threads of the bolts and screws up ti htly against the under side of the strap. T is fact permits any desired amount of strain to be brought upon the bolt and insures the flange of the rail being held fast at all times. In order that an offset wrench may be used to screw up the nut, the concrete is cut away in a dishsha ed manner, as indicated by G and shown in t e three views. In Fig. 3 the bottom of this recess is shown to pitch outward, so as to insure drainage and not to form a closed pocket.

While the above constitutes what is considered the referred form of this invention, slight modi 'cations, variations, and alterations of structural details may be resorted to without violating the principles of the design for this tie, and the right is reserved to IlO make slight changes within the scope of the invention as practice may show to be desired. The purposes and intent of the invention are set lorth in the following claims.

The phrase "trough-shaped in the claims is to be understood as including any troughshaped metallic reinforcement either open at the top or closed at the top or inverted.

My Invention is not limited to the mechanism here shown for securing the rails to the tie, as other modes of accomplishing this result might be used as, for instance, by substituting two blocks of wood of very nearly the same vertical depth as the thickness of the tie for the two enveloping straps at each end of the tie, so that the ordinary spike now in use with timber tics could be used for attaching the rails instead of using the spikebolt.

hat I claim as new, and desire to secure b Letters Patent, is

' 1. A railway cross-tie comprising a body of concrete or artificial stone, with vertical sheets of open metallic reinforcement em- .3. A railway cross-tie comprising a body of concrete or artificial stone with open metallic reinforcement embedded longitudinally therein, a metallic band around said body adj acent to each rail, and means for securing the rail to the band inde endently of said reinforcement, substantially as described.

4. A railway cross-tie comprising a body of concrete or artificial stone with a troughshaped sheet of laterally-expanded metallic reinforcement longitudinally embedd ed. there in, substantially as described.

5. A railway cross-tie comprising a body of concrete or artificial stone with a troughshaped sheet of open metallic reinforcement longitudinally embedded therein, the sides of the trou h being of greater vertical dimensions under the rails than the middle portion, substantially as described.

6. A railway cross-tie comprisin a body of concrete or artificial stone with faterallyexpanded metallic reinforcement embedded longitudinall Y therein having two vertical members and a horizontal member, substantially as described.

7. A railway cross-tic comprisin a body of concrete or artificial stone with faterallyexpanded metallic reinforcement embedded longitudinally therein having a vertical member and a horizontal member in a single sheet, substantially as described.

8. A railway cross-tie, comprising a body of concrete, or artificial stone, with a sheet of open metallic reinforcement embedded therein, said sheet of reinforcement being troughsha I ed, havin a horizontal bottom portion and with raiser sides, the tie being of reater vertical dimensions under the rails Man in the middle portion, as set forth.

9. A railway cross-tie, comprising a body of concrete, or artificial stone, a sheet of open metallic reinforcement embedded therein, and two enveloping straps under each rail for the purpose, with the assistance of spikebolts, of attaching the rails to the tie, said enveloping straps being of metal and going completely around the tie, on its four sides, as set forth.

10. A railway cross-tie comprising a body of concrete, or artificial stone, a sheet of open metallic reinforcement embedded therein, envelopin straps of metal under each rail, and spike-bolts passing throu h slotted holes of the enveloping straps in or er to bolt, with the assistance of nuts, the rail to the tie, as set forth.

11. A railway cross-tie comprising a body of concrete, or artificial stone, a sheet of open metallic reinforcement embedded therein, enveloping straps of metal under each rail, spike-bolts to pierce said straps, and a recess in the concrete under each nut in order that an offset wrench may, be inserted under the strap to engage the nut for the purpose of screw'ng it up.

12. A metal tension member for combined metal and concrete railroad-tie construction, comprising a longitudinal portion and a portion of the same expanded laterally.

13. In a combined concrete and metal tie, the combination of a concrete body, a metal member extending lon itudinally of the same and having extending latticed projections in the form of expanded metal.

In witness whereof I have hereunto set my band in the, presence of two subscribing witnesses.

J. H. G. WOLF. Witnesses FRANCIS M. WRIGHT. BESSIE GORFINKEL.

Images