US678189A

US678189A - Car-roof construction.

Info

Publication number: US678189A
Application number: US4099300A
Authority: US
Inventors: Lewis C Marshall
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-12-24
Filing date: 1900-12-24
Publication date: 1901-07-09
Anticipated expiration: 1918-07-09

Description

No. 678,189. I Patented July 9, mm.

L. C. MARSHALL.

CAR ROOF CONSTRUCTION.

(Application filed Dec. 24, 1900.)

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UNITED v STATES- PATENT OFFICE.

LEWIS O; MARSHALL, EAST WALPOLE, MASSACHUSETTS.

CAR-ROOFCO'NSTRUCTION.

srEoIFIoArIonroimm part of Letters mat a... 678,189, dated July 9,1901. Application a December 24,1900. Serial No. 40,993. '(No model.)

TootZZ whom it may ooncermg Be it known that I, LEWIS O. MARSHALL, a subject of the Queen of Great Britain, residing at East Walpole, in the county of Norfolk and State of Massachusetts, have invented new and useful Improvements in Oar-Roof Constructions, of which the following is' a specification. v

This invention relates to car-roof construction, and is particularly applicable to the roofs of freight-oars.

The invention is in the nature of an improvement on my priorLetters Patent of the United States, dated July 5, 1898, numbered 606,996, in which means are shown for protecting the flexible roofing material applied to the roof of a car between, the roof proper and the subroof from being torn at the points of its attachment to the roof by the torsional movements of the latter, which are always present to a greater or less extent when the car is in motion. In my said prior Letters Patent the roofing material is attached to the car only at one point on each side of the car, as may be readily seen by a reference thereto.

In my present invention my object is to provide means for applying this roofing material to the subroof of a car without attaching it thereto at any point, to the end that it may be more quickly and cheaply applied and whereby there may be absolute freedom of movement of the roof and roofing material, one relative to the other, and all danger of the tearing of said roofing material by reason of torsional strains thereon is obviated.

In carrying my invention into practice I prefer to use the roof construction shown in my said prior, patent, and it is that construction which is shown in the drawings forming part of this specification, in which Figure 1 shows a perspective view of a portion of a car-roof having the roofing material appliedthereto according to my invention, a part of the outer roof. being broken away. Fig. 2 is a vertical section on line 2 2, Fig. 1. Fig. 3 is a perspective View of a portion of one end'of a' strip of the roofing material. Figs. 4 and 5 are two end views of a strip of said material extending from one side of a car over the ridge of the roof to the other side as they would appear on the car. Fig. 4 is composed of two strips lapped at the ridge, and Fig. 5 is made in'one piece. I

In the drawings, a. indicates the side of the car; b, the subroof, on which the roofing material is laid from one side to the other of the car, said strips of material being indicated by 0. Along the edge of the roofis laidlongitudinally the inner facia-board d, andat 'fsuitable intervals the subrafters care laid at right angles to the edge of the car, on which the usual purlins are laid to support the roof proper, f, in the usual manner. At points opposite the ends of the subrafters 6 blocks g are nailed to the inner facia-board,

to which the outer facia-boards h are nailed,

whereby an open space orchannel t', Fig. 2, is provided between the outer and inner facia-boards, through which any water from the surface of the roofing material may escape. The edge of the roof overlaps the upper edge of the outer facia-board, as shown. The subrafters e are. provided along their edges lengthwise with narrow grooves j, which trend upward toward the center of the subrafter. These grooves receive the edges of a strip of the roofing material 0, allas'shown.

and described in my said prior Letters Patent. The blocks 9 are of such a width as to leave the ends of said grooves uncovered when said blocks are nailed onto the car in their proper position, heretoforedescribed. The strips of roofing material a, which may be any one of the flexible waterproof substances applicable to roof constructions, are of such a width that the opposite edge thereof may be inserted in the grooves j and passed over the ridge of the car from one side thereof to the other, and it may consist of one piece, as shown in Fig. 5, or in two pieces, as in Fig. 4, and the ends thereof at each side of the car left long enough to be doubled back upon the strip, as shown, to form a trough is, Figs. 4 and 5, the extremities-being of such length that they will abut against the under side of the purlin which lies at the edge of the roof, (see Fig. 2,) which would bring the said end of the strip 0 somewhat above the level of the plane of the top of the subroot' b in the construction shown. This, however, is not material.

When a sheet of roofing material 0 is ap plied to a car-roof with its ends bent in the manner described, it is, by its said turned-up ends bearing against the roof, soheld in position that while it may yield to a considerable extent in any direction under the torsional movements of the car it cannot be drawn out endwise nor if made in two pieces work its way upward or downward, because of the locking of the ends of the strips 0 as described. To provide means of escape for cinders and the like, which will find their way into the space between the upper roof and subroof b and from thence to the trough It, the latter is provided with perforations Z, through which said cinders may escape, and these keep the trough is clear.

In applying the roofing material to the car the subroof b and subrafters e are put on in the manner described in my said prior patent, and the edges of the strip a are then slipped into the grooves in the subrafters e at the edge of the car and either carried over the ridge to the opposite side of the car or carried-a little way over the ridge and another piece from the opposite side is entered in the grooves j and its inner end lapped over the first piece at the ridge for a sufficient distance to secure the exclusion of water. The ends of the strips at the side of the car are then bent to form the troughs k, the perforations being cut through the bottom of the trough, and the inner facia-board d is then nailed on, after which the roof is completed by the application of the outer roof.

The herein-described method of applying the roofing material to a car-roof has many advantages over the methods heretofore employed, as in my construction the material is not held unyieldingly at any one point, and hence no strain that it can be subjected to when in use can possibly cause its rupture, whereby a leak would be produced. Furthermore, the material can be applied practically without tools, only a knife being required for cutting oi the paper and cutting out the perforations Z.

The particular means of holding the edges of the strips of roofing material by insertingfor other means may be employed for holding the edges of the strips in their proper place Without attaching them to the roof con-' struction at any point.

-Having thus described my invention, what .I claim, and desire to secure by Letters Patent of the United States, is- I 1. The combination in a car-roof construction comprising a roof, asubroof, and a facia-board supported on the car and at a distance therefrom along the edge of the roof, of strips of roofing material applied to the snbroof, and having their ends turned back upon the body of the strip to form a trough, the latter being located between the faciaboard and the side of the car, substantially as described.

2. The combination, in a car-roof construction comprising a roof, a subroof, and a facia-board supported on the car and ata dis tance therefrom along the edge of the roof, of

strips of roofing material applied to the sub roof and having their ends turned back upon the body of the strip to form a trough, the outer edge of which will abut against the under side of the roof, and one or more perforations in the bottom of said trough, substantially as described.

3. The combination in a car-roof construe tion comprising a snbroof and an outer roof above the latter whereby a passage is left be tween said roofs from side to side of the car, of strips of roofing material located in said passage for covering said subroof, and having their ends bent toform a trough located below the plane of the snbroof, together with a fa'cia-board secured to the outside of the car at some distance therefrom,- and between which and the side of the car said trough is located, substantially as described.

LEWIS O. MARSHALL.

lrVitnesses:

GEORGE M. GnAvEs, FRANK W. FILLMORE.