US940740A

US940740A - Railroad-tie.

Info

Publication number: US940740A
Application number: US48009809A
Authority: US
Inventors: Francis Schumann
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-02-26
Filing date: 1909-02-26
Publication date: 1909-11-23
Anticipated expiration: 1926-11-23

Description

Amman Patented Nov. 23, 1909. 2 SHEETS-SHEET l.

F. SQHUMANN. RAILROAD TIE.

r rLvlllllllllld APPLGATION FILED FEILZG, 1909.

WITHESSES E" SCHUMANN.

RAILROAD TIE. APPLIGATION FILED PEB.26, 19.09.

Patentea'Nov. 23, 1909.

2 SHEETS-SHEET Z.

navman WITEESSES I, 'UNlTED "Atras PATENT Ormea.

FRANCIS SCIEUIVIANN,V 0F PHILADELPHIA, PENSYiLVANIA, AiSSIGNOR 0F OIIQ'I-HAISIFy T'o FRANK sHUM-AN, oF 12H1LADELPIELIAJ PENNSYLVANIA.,

RAILROAD-TIE.

Specioation of Letters Patent. Patented Nov. 23,. 12909..

Application IedfFebruary 26,'19'091 Serial No. 480,098.

, To all 'whom 'it may concern: i

of the city and county of Philadelphia, State of Penns lvania, have invented an Im rovement in ailroad-Ties, of which the ollqw# in is a specification.

Iy invention has reference to railroad ties and consists of certain improvements which are fully setforth in the following specification and shown in the accompanying drawings which form a part thereof.

The-object of myinvention is to provide a construction of railroad cross tie made of reinforced concrete which shall be durable, cheap and embody elasticity.

The difficulty heretoforeexperienced in the use of reinforced concrete railroad ties has resided in the fact that the ties have been' so inelastic in their support for the rails that the Wear and tear upon the rolling' stock has been excessive due to the non yielding character of the said rail support.

By my improved construction of tie this diiiiculty has been overcome and at thesame' time the cost has been reduced to a minimum consistent with strength. 4

My invention consists of a concrete tie re-v inforced by a series of longitudinal rods or bars those at the lower part being preferably arranged with portions bent upward so as to extend through upper portions ot' `the concrete body, and said body being pro-v vided further Awith metallic chairs for the rails near each end, said chairs each comprising a lurality of parallel bars arranged horizontal y above the concrete body and havin their ends extending downward and embe ded in the solid concrete body; Jfurther in providingin said tie a longitudinal reinforcing bar or rod extending approximately over the len th of the "tie and having portions eXpose and arranged adjacent to the other. exposed bars to constitute portions of the rail chairs; further, inthe above structure when combined with rail clamping devices for firmly clamping the `rails to the chairs, said clampingldevices being' independent of the concrete body.

My invention further consists `of a rein-' forced. concrete railroad ti'e having longitudinal reinforcing metal bars and in which a portion of said bars near each end are brought above the surface of the concrete y body to constitute elastic metallic chairs' for `the rails.

My invention also comprehends details of construction which, together with the features above s ecilied, Willbe better' understood by re erence to the accompanying.

drawings, in which :v l

Figure 1 is a plan of a concrete railroad tie embodying my invention; Fig. 2'isa'side elevation of the same; Fig. 3 is an enlarged side elevation corresponding to one end of Fig. 2; Fig. 4 is across section of my iinproved tie on line w-m of Fig. 3; Fig. 5isa cross section of the same on line y-y of Fig. 3; and Fig. 6 is a perspective view of the preferred clamping devices for the rail in detached relation. l

2 is the concrete body and is reinforced throughout its length by rods or bars, preffrably as shown, in which there is a central :upper bar 5 of large cross section and five lower bars Sand 4 of smaller cross section, the outer bar 4 upon each side of the three central bars 3 being preferably' bent upward atthe ends and also at the middle portions between the rail chairs, as clearly indicated in Fig. 2. It is preferable that these bars 4 be brought up to the level of the bar 5 .at the middle portion of the tie s0 as to give trussed strength, though this is not essential to my invention.

Near each end of the tie and below the rails 8 the tie is recessed as at 'i' and over Athese portions are arranged the metallic chairs G upon which the rails S are seated and to whichfthey are. clamped b clam` ing devices 1l. The chairsconsist o short' 'ars 6, preferably four in number and arranged in pairs upon each sideof the central bar 5, (Fig. 4), the ends of said bars 6v being extended downward and embedded in the conj crete body 2 as indicated at 9. Thev bar 5 is also bent to a level'of the chair bars 6 so as to coact with said bars in forming the chairs for the support of the rails.

In buildmg u the tie short transverse rods 10 are positlonedin the mold by which the chair bars 'are suspended in proper position during the castin operation in .the manufacture of the tie. hen the tie has set and hardened these cross 'or transverse body of concrete ltransversely adjacent to u `preferably not extended above The rails 8 may be secured to the metallic L chairs `in any suitable manner-andfor this purpose I prefer to employ clamping devicesI 11 of thecharacter shown in Figs. 3 and 6. These clamping devices comprise the three

parts

12, 16 and`19 ody 12 is placed between two Aof the chair bars 6 with the lateral lugs 13 extending under and locking with said bars and re- .and

(Fig. 6) of which theV ceived in curved portionsv thereof as shown*I in Fig. 3. |I`his,body part 12 is provided* with a vertical slotl and a transverse slotff' each consisting of a plurality of metal bars foiming a grid above the concrete surface an embedded in the concrete body.

2. A'railroad cross tie consisting of a reinforced concrete body provided near its ends with metallic `chairs for the rails said chairs each. consisting of a plurality of metal bars foming a grid above the concrete surface and having tlieirl ends extending downward and embedded in the concrete body and the two chair portions connected by a longitudinal bar embedded in the concrete body except adjacent to the chair portions.

3. vA railroad cross tie consisting of a reinforced concrete body provided near its ends with depressed portions above which are arranged metallic chairs for the rails said chairs each consisting of a plurality of metal bars forming. a grid above and out of contact with the concrete surface and having their ends extending bedded in the concrete`body.

downward. and eme having their ends extending downward 15. The clamping block 16 fits into -the slot-14: and has a nose 17 which fits over the flange ofthe rail and also has a transverse notch 18. The key 19 is driven through the transverse notch 18 of the block 16 and the slot 15 of the body l2 and being wedge shaped, it forces the clamping block 16 downward tightly upon the rail and clamps it upon the chair. When the rail is tightly clamped the prongs 20 of the wedge may be bentA sidewise (Fig. 1) to prevent the wedge backing out. There arepreferably two of the clamping devices for each chair, one between ach pair of the bars 6, are diagonally opposite, as shown in Fig. 1. In place of the clamping devices, above described, any of the ordinary types of bolts or fastening devices may be used, and hence I do not confine myself to any special means for attaching the rails to the chairs.

While ordinary concrete comprising cement and broken stone or sand is most convenient for use in Inyinvention7 I do not restrict myself to any special form of concrete, as any suitable character of such compound may be employed so long' as it comrises a cohesive or bindin material com- Eined with a vitreous or har substance such Y* as sand or crushed stone.

out departing from the spirit of the invention;

Having now described my invention what I claim as new and desire to secure by Letters Patent, is:`

' 1.."A railroad cross inforced concrete bod with metallic chairs or the rails, said chairs tie consisting of a rcso that they lof a plurality of bent bars l upper portions upon which the rails rest an '13C provided near its end yLA railroad cross tie consisting of a reinforced concrete body provided near .its

ends with metallic chairs for the rails said chairs each consisting of a-'plurality of metal 'bars forming a grid above the concrete suiface and having their ends extending downward and embedded'in the lconcrete body and transverse rods embedded in .the concrete body and supporting the metal bars forming the chairs;

` 5. A railroad cross tie consisting of a reinforced concrete :body provided near its ends with metallic chairs for the-rails said chairs each consisting of a plurality of vmetal bars forming. a grid above the concrete surface and having their ends extending downward and embedded in the concrete body in combination with the rails resting ilpon the chairs, and clamping devices secured to the chairs for clamping the rails to the chairs. 6. A'railroad cross tie consisting of a reinforced concrete body provided near its ends with metallic chairs for the rails said chairs each consisting of a plurality of metal bars forming a grid above the concrete surface and having their ends extending downward and embedded in the concrete body in conibination with the rails resting upon the chairs, and clamping devices secured to the chairs for clamping the rails to the chairs and each consisting of a body part engaging.

the underside of the chair bars, a clamping part carried by the body part and clamping the rail flange to the chair, and a wedge` part driven in Abetween the bodyV and clamping parts for shifting the latter upon the former. 7. A' concrete railroad tie having near each end a metallic chair ortion consisting liaving horizontal depending portions extending downvward and embedded inl the Aconcrete body,

said horizontal chair portions bein above and out of contact with the concrete ody.

8. A concrete railroad tie having near each end a depressed portion 7 over which is secured a metallic chair portion consistin of a plurality of bent bars having horizonta Aupper portions upon which the rails rest and depending portlons extending downward and embedded in the concrete body, said .horizontal chair portions being above and out of contact with the concrete body.

9. A concrete railroad tie having near each end a depressed portion 7 over which A is secured a metallic chair portion consisting of a plurality of bent bars having horizontal upper portions upon whichV the rails ;rest and depending portions extending downward .and embedded in. the concrete body, said horizontal chair portions above and out of contact with the concrete bodyv and a longitudinal rod embedded in the concrete body and having portions extending above lthe concrete body adjacent to the horizontal upper portions of the chairs.

, 10. A. concrete railroad tie consisting of a `concrete body' provided near each end with a metallic chair for `the rail said chair having a horizontal part out of contact with and above the sunfaceof the concrete and downwardly extending the concrete body.

Vends embedded' in 11. A concrete railroad tie consisting of a concrete body provided near each end-with a A metallic chair for the rail said chair havin a horizontal art out of contact with an above the sur ace ofthe concrete anddown- Wardl extending ends embedded in the concrete ody combined with the rails resting body and havin their ends extending downward and embe ded therein. I

In testimony of which invention,4 I here-v unto set my hand.

` FRANCIS SCHUMANN. Witnesses: AROTHWELL MEEHAN, K ATHnYN H. MILLER.