US1952123A

US1952123A - Metal car roof

Info

Publication number: US1952123A
Application number: US437644A
Authority: US
Inventors: Ditchfield Frank
Original assignee: Youngstown Steel Door Co
Current assignee: Youngstown Steel Door Co
Priority date: 1930-03-21
Filing date: 1930-03-21
Publication date: 1934-03-27
Anticipated expiration: 1951-03-27

Description

Much 27, 1934. F. DITCHFIELD METAL CAR ROOF Filed Hatch 21. 1930 Patented Mar. 27, 1934 UNITED STATES PATENT OFFICE METAL OAR ROOF Application March 21,1930, Serial No. 437,644

7 Claims.

This invention relates to metal car roofs, and the subject matter hereof is in the nature of an improvement on the subject matter of my copending application 331,373, filed January 9, 1929.

Objects of my invention are to provide a durable, flexible metal roof for cars, which may be economically fabricated, applied and repaired and wherein the use of rivets or other fastening devices extended through the roof sheets and exposed to the elements, is entirely avoided.

Another object of my invention is to provide a metal roof structure employing an interior carline and a cap plate for holding down the roof sheets and wherein means are employed for securing the cap plate to the carline under an adjustable tension, said means being characterized by the fact that no part thereof is exposed on the upper side of the roof but, on the contrary, said means are manipulated entirely from the underside of the roof.

Further objects of the invention will more clearly appear from the description and claims hereinafter following, taken in connection with the accompanying drawing.

In the drawing forming a part of this specification, Figure 1 is a broken, transverse, sectional view of a portion of a car superstructure showing my improvements applied thereto. Figure 2 is a detail sectional view corresponding to the line 2-2 of Figure 1. Figure 3 is a longitudinal part sectional view, part elevational view, the section corresponding to the ridge of the roof and one of the carlines being shown in elevation with the roof sheets removed from the ridge to the eaves. And Figure 4 is a detail sectional view corresponding to the line 4-4 of Figure 1.

In said drawing, 10 indicates one of the usual Z-bar side plates of the car, the same having an upstanding flange 11, a horizontal web 12 and a depending outer flange 13, the metal 'side sheets 14 being riveted to said flange 13.

In carrying out my invention, I employ metal carlines, one of which is designated generally by the reference character A; metal cap plates, one

r of which is designated generally by the reference posed longitudinally extending corrugation, the latter in turn so dividing the interior of the carline as to form two laterally spaced drainage channels 19-19, as hereinafter described. At each end, the carline A is bent downwardly approximately at right angles, as indicated in Figures 1 and 4, the same general channel configuration being retained as indicated at A in Figure 4. At each end, the carline is secured to the side plate 10 and an angle 20 which is applied to the outer side of the flange 11 of the side plate, by rivets 21--21. Preferably, the central ridge or corrugation 18 is of greater depth near the ridge of the car roof, as indicated at 118 and is preferably reduced in height towards the sides of the roof, as indicated at 218, so that said ridge or corrugation is relatively shallow where it passes over and down alongside the side plate, as shown in Figure 4, but still retaining the drainage channels 19, out to the plane of the side plate. The ends of the carline terminate in close proximity to the horizontal flange of the angle 20, as indicated at 22 in Figure 1.

Each of the roof sheets C extends from side to side of the car and is of a width to bridge between each adjacent pair of carlines A. Each sheet C has its sides downwardly flanged as indicated at 23, the flanges depending within the carlines A, said flanges 23 being disposed over the drainage channels 19 and normally positioned approximately midway thereover. At their ends, the sheets C are downwardly turned so as to follow along the bent end of the carlines, the sheets being extended downwardly below the horizontal flange of the angle 20, as shown at 24 and lying against said flange. The lower edges of the ends 24 of the roof sheets terminate a slight distance above the horizontal web 12 of the side plate so that an air pocket is formed between the side plate, the angle 20 and the depending portion of the roof sheet to break up the currents of air which might otherwise drive the moisture up under the roof sheets. The downturned ends of the roof sheets are secured to the side plate by suitable means, such as the headed pins 25 extended through alined apertures in the sheets C, the angle 20, and flange 11 of the side plate 10, as shown in Figure 4. The pins 25 may be secured in position by suitable cotters 26 and preferably washers 2'727 interposed between the heads of the pins and the roof sheets and between the cotters and the side plate. To prevent any moisture dripping to the interior of the car, which might pass through the roof sheet along the pins 25, the latter are provided Wit an annular recess I of maximum depth at the ridge line of the roof "or web'29 of s'uflic'ient width to overlie the adjacent edges of two adjacent roof sheets C and to also overlie the supporting flanges 15 of the carline. their ends so as to conform to the roof sheetsand carlines, as indicated in Figure 4. On its underside, each cap plate B is provided with integral laterally spaced longitudinally extending flanges 3030, the spacing being such that the flanges substantially span the ridge 18"0f the carline,

as shown in Figure 2. Said flanges 30 are tapered or chamfered toward the ends of the cap plate,

as-indicated at 130 and are further cut away as indicated at l 31in the downturned portions of the cap plate. In this connection, it will be understood that the flanges 16 of the carlines are and are gradually reduced in height toward the side plates, as shown in Figure 1, so as to provide the desirable slope to the roof sheets.

For securing the cap platesto the carlines under an adjustable tension, I employ the following means as best illustrated in Figure 2. Preferably midway between the ridge of the roof and each side plate, each cap plate is provided with a rivet 32 supportedin the flanges 30 thereof, the rivet being headed at each end. Loosely mounted on 85 each rivet 32 is a bolt 33 having a sleeve head and a threaded shank 34 so as to allow for shift and swinging of the bolt with reference to the rivet 32. The threaded shank 34 is extended downwardlythrough an opening 35 in the corrugation 18'and a nut 36 applied thereto, a washer S'Tpreferably being interposed between the nut and the carline. ,With this arrangemenhit is obvious that the cap plates B can be pulled down tightly; against the roof sheets and the parts held together under any desired tension Further, it will be observed that no part of the securing meansis extended upwardly through the cap plate and hence no part is exposed to the elements and no moisture or other foreign matter can enter so 1 flange 30.

by way of the fastening means. Further, the arrangement is such that the assembling or disassembling of the parts is effected from the interior of the car or underside of the roof.

Still referring to Figure2, it will be seen that, should any rain or the'like be driven between the roof sheets and the cap plate, the same will either drip down the roof sheet flanges 23 or, if driven with suflicient force, will impinge against the In either event, any such rain or moisture that may be driven under the cap plate will drip down into the drainage channel 19 and, due to the slope of the" latter toward the sides of the car such rain or the like will be drained off over the side plate of the car and entrance thereof to the interior of the car positively prevented.

From the preceding description, taken in connection with the'drawing, it will be seen that a very-:eifective weathersealed joint isprovided along the side plates and that admissionof rain and the like to the interior of the car at any of the'roof sheet-joints is'prevented. Furthermore, the arrangement at 'the'joints of the roof sheets issuch as--to eliminate transversely extending ridges, thus preventing the'piling-up of snow or sleet and also reducing wind resistance.

The cap plates B are downwardly bent at wardly offset corrugation extending longitudi- I h herefnshown and described what I now censidfl the preferred manner of carrying out nally thereof, the corrugations being of lesser depth than that of the mafnfianges at all points along the carline.

2. As an article of manufacture, a metal carline having integrally formed outturned upper flanges, vertically disposed main flanges and a bottom web, the latter being formed with an upwardly ofiset corrugation extending longitudinally thereof, the corrugations being of lesser depth than that of the main flanges at all points along the carline, the ends of said carline being downwardly turned and adapted to fit over the side plates of a car.

3. In a metal car roof, the combination with metal carlines extending from side to side of the car; of roof sheets supported on the tops of said carlines and extending from side to side of the car and between carlines; imperforate cap plates superposed on the sheets and extending from side to side of the car and each associated with a carline; and means for securing the cap plates to the carlines, said means including depending projections on the undersides of the cap plates,

elements attached to said projections and extending through the carlines, and devices on the underside of the carlines cooperable with said elements.

l. Ina metal car roof, the combination with side plates; carlines extending between the side plates, each carline being formed with drainage channels on the upper side thereof; roof sheets extending between carlines and having their edges extending" therewithin and above the drainage channels; a cap plate associated with each carline and seated upon adjacent portions ofthe roof sheets; bolts swivelly secured to the undersides of the cap plates and extending downwardly through the carlines; and nuts cooperable with the bolts for adjustably securing the cap plates to the carlines.

5. In a metal car roof, the combination with carlines of generally channel cross section, with longitudinally extending upraised corrugations in the webs thereof and extending lengthwise; of 'roof sheets extending between carlines, the edges of the roof sheets being downwardly flanged and extending within the carlines; cap plates associated withthe carlines; bolts adjustably secured to the undersides of the capplates and extending downwardly through said corrugated portions of the'carlines; and nuts cooperable with said bolts on the undersides of the carlines.

6. As an article of manufacture, a cap plate for car roofs, comprisingra main web extending the full length of the cap plate and from side plate toside plate of the car, two integrally formed flanges on the'underside of the web extending ing from said flanges for securing the cap to an underlying carline.

7. In a metal roof for a car having side plates, the combination with inside, self-draining metal carlines each extending from side plate to side plate of the car and secured at its ends to the side plates; of roof sheets having their edges extending over and partially into the carlines; a readily detachable cap plate associated with each carline, each cap plate extending from side plate to side plate of the car and having a top imperforate main flat section of a width to overlie the edges of adjacent roof sheets and the top