US746457A - Floor-frame for cars. - Google Patents

Description

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PATENTED DEC; 8, 1903.

Y H. CARLTON. FLOOR FRAME ROR OARs.

APPLICATION FILED JULY-8.- 1903.

No MODEL.

@mimo/mo PATENTED DEG. 8, 1903.

R. CARLTON.

FLOOR FRAME POR OARS.

- APPLIUATION FILED JULY 8. 1903.

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Patented December 8, 1903.

PATENT OFFICE.

HOWARD CARLTON, OF ROLAND PARK, MARYLAND.

FLOOR-FRAME FOR CARS.

SPECIFICATION forming part of Letters Patent No. 746,457, dated December 8, 1903.. Application filed July 8,1903. Serial No. 164,668. (No model.)

To ctZZ whom it may concern:

Be it known that I, HOWARD CARLTON, a citizen of the United States,residin g at Roland Park, in the county of Baltimore and State of Maryland, have invented newand useful Improvements in Floor-Frames for Cars,of which the following is a specification.

My invention relates to the floor and floorframing of railway-cars, and especially to the arrangement of the stringers and center sills, which are preferably of metal, and the combination of the latter with the body-bolster,

struction and combinations and arrange,

ments of parts, as hereinafter set forth and claimed. v

The accompanying drawings illustrate one example of the physical embodiment of the invention constructed according to the best .mode I have so far devised for the practical application of the principle. Y

Figure 1 illustrates in plan view the half of the Hoor-framing of a car. Fig. 2 is a longitudinal section in elevation of Fig 1, taken on a longitudinal line throughlthe center. Fig. Sis a half end view of Fig. l in elevation and a half sectional view taken on a line at the center of the floor-frame and floor. Fig. 4 illustrates the union of the channel center sills with the body-bolster. Fig. shows one end of a center sill notched to receive an end sill and slotted to receive straps which unite the top Iianges of the body-bolster.

Referring to the several igures, the numeral 1 designates the center sills, in this instance consisting of steel channel-beams,with their plane sides facing each other and extending from end to end of the'car; 2, a notch cut in the end of each sill to receive the end sill; 3, two slots made in the center sills approximately at their neutral axes to receive straps which unite the top iianges of the bodybolster; 4, iilling-st-rips located upon the top anges of the steel center sills, said fillingstrips increasing in depth from the ends to the center, so that the central portions are from one-half an inch to an inch thickerthan at the extreme ends thereof; 5, the intermediate stringere, which in this instance are of wood and about nine inches in depth; 6,.the side sills, shown in the views as approximately twelve inches in depth; 7, the end sill seated within the notched spaces 2 of the steel center sills; 8, a cast-metal body-bolster having top and bottom flanges; 9, seats at the ends of the bolster for the reception of the side sills; 10, recesseseach side of the center of the bolster toreceive the steel channel center sills.

11 11 are straps which passthrough slots 3 inthe steel channel-sills and are riveted or boltedto the upper Harige of the body-bolster.

12 designates cross-frame tie-timbers located between the sills and stringere; 13, a needle-beam of ordinary construction; 14, intermediate filling-strips between the needlebeam and the cross-frame tie-timbers; 15, the queenposts; 16, truss-rods extending from end to end of the car and anchored in the end sills; 17, truss-rod fulcrum-blocks, which in this case rest upon the top fiange of the bodybolster, and 18 is a tie rod which passes through the sills and stringere adjacent the cross-frame tie-timbers.

It will be observed that when in erecting the frame the truss-rods, which are provided with the ordinary turnbuckles, are tightened,

the side sills and stringers are slightly cambered or hogged, the filling-strips 14 being of suliicient depth to raise the intermediate and side sills at their centers when the top surface of the needle-beam comes in contact with the lower flanges of the center sills. The center sills are on straight lines from end to end and not under excessive tension, the tapered filling-strips on top of the center sills lling the space which would otherwise be more or less open between the top edges of the center sills and the lioor. The diierence between the thickness of the filling-strips at the ends and at the centers of the car of course corresponds to the camber at the cen- IOO ter. rIhe needle-beam atits top surface bears against the filling strip 14 and the lower ianges of the center sills, so that the lweight of the floor and the load is equally distributed `frame of center sills, side sills and stringers,

'tial departures. Acenter sills as consisting of steel channels, I

and supported by the side sills, stringers, and the center sills. The steel channel-sills are by this arrangement maintained substantially in straight lines and not cambered or under tension between the body-bolsters.

The union of the center sills and body-bolster is of a simple character. The center sills are not weakened, for the slots 3 3 are at the neutral axes of the beams, the upper and lower flanges or chords being preserved integral, and the body-bolster upper chord or tension member possesses ample strength by being united by the two straps, the removal of which will allow the withdrawal of the bolster without disturbing the center sills.

From the foregoing descri ption,taken in connection with the drawings, it becomes clear center sills located in line with the draft-rigging, where they can take the strains of drawing and towing directly,and that this has been accomplished without weakening the said sills at their points of connection with the bodybolster.

c While I have illustrated and described but one example of the physical embodiment of 'my invention, I do not thereby intend to limit the scope thereof to the exact features of construction, inasmuch as changes and modi- -cations may be introduced at the will of. the

manufacturer without constituting substan- While I have illustrated the may in some cases substitute therefor composite metal and Wooden sills or sills entirely of wood and arrange them as set forth in the description, so that they will not be under excessive tension when the truss-rods are tightened. The construction of the body-bolster and the method of uniting the body-bolster and center sills may also be modiiiedand a union of the parts effected without impairing the strength of the body-bolster or center sills.

What I claim as new, and desire to secure by Letters Patent, is

l. The combination in a car-iioor and floor the oor being cambered and the center sills being in straight lines substantially from end to end.

2. The combination in a floor-frame for cars of center sills, side sills and stringers, the side sills and stringers being cambered and the center sills in substantially straight lines between the body-bolsters.

3. The combination in a car-floor and floorframe, of side sills, stringers, and center sills consisting of steel channels; filling-strips located upon the topv flanges of the channels and being of greater depth at the centers than at the ends; a needle-beam; and truss-rods; the said floor, side sills and stringers, being cambered and the center sills substantially straight in substance as set forth.

4. The combination in a car-Hoor frame, of side sills, center sills, and stringers; crossframe tie timbers; needle beam; fillingpieces between the needle-beam and crossframe tie-timbers; and truss-rods; thesaid needle-beam bearing against the lower surfaces of the center sills, which are in substantially straight lines and the side sills and stringers cambered. f i

5. The combination in a car-fioor frame of steel channel center sills. side sills and stringers, the channel-sills being in straight lines from end to end, the side sills cambered and the floor also cambered; a needle-beam and truss-rods which are anchored in the end sills.

6. The combination in a floor-frame, of center sills; side sills; and a body-bolster;4 said body-bolster being recessed adjacent its cenltral portion and the center sills located in said recesses; and straps passed through the cen"- ter sills and united to the body-bolster.

7. The combination in a car-floor frame, of channel center sills; a body-bolster having top and bottom ianges; and straps; the'lower edges of the center sills being located below the top flanges of the body-bolster and provided with slots through which the straps pass, and said straps secured to the upper -ange of the body-bolster.

8. The combination in a car-floor frame, of a body-bolster having top and bottom ianges and a web, and recesses formed in the bolster each side of its center; channel center sills located within the recesses; and straps passed through the webs of the channel-beams and secured to the top flange of the body-bolster.

9. The combination in a car-floor frame, of

a body-bolster recessed each side of its cen` ICO' IOS

IIO

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