US1360092A - Car-roof - Google Patents

Description

R. w. BURNETT.

CAR ROOF.

APPLICATION FILED sEPL2o. I917.

Patented Nov. 23, 1920.

UNITED STATES P-ATENT OFFICE.

RICHARD W. BURNETT, OFCHIGAGO, ILLINOIS.

can-noon.

erence being had therein to the accompany ing drawing.

he invention relatesto car-root's or that type in which theroofing sheets are arranged beneath channel carlines and are provided with nested flanges Within the channel's oil the carlines, forming in connection therewith weatherproofing means. The present invention comprises the novel construction of flangesby which more thorough weather-proofing is obtained, and further certain features of construction as hereinafter set forth.

In the drawings: v

Figure 1 is a sectional side elevation through the roof;

Figs. 2 and 3 are similar views showing modified constructions; and

Fig. 4 is a cross-section through the carroof substantially in the plane 4-4: Fig. 1.

In the construction of roots of the type,

above referred to it is usual to provide the adjacent upstanding flanges oi the roofing sheets with oppositely returnbent portions nested together and supported uponsaddles or hearing blocks suspended from the carline. The weather-proofing is effected, first, by the inverted channel carline which forms -a cap for the nested flanges; and second,

by the nested flanges themselves. Thus any water that may pass between the carline and the sheet must rise above the flanges to find access to the interior of the car. However, under certain conditions of strong wind pressure, water blown in the crevice beneath the carline may mount the underlapping flange and be forced between the same and the overlapping flange to the interior of the car. With my improved construction this eflect is impossible, for the reason that the underlapping flange is turned in the same direction as the overlapping flange, and any water mounting either of the flanges will. be deflected outward or away from the joint. I have also devised an improved means of supporting the roofing sheets and for limiting the movement thereof to prevent disengagement, the specific construction being as follows:

Specification of Letters Patent. Patented N 23, 1920. Application filed September 20, 1917, Serial No. 192324;

A is-a carline of inverted channel or Ushaped cross-section, having the outwardly-extending flanges B, and G are roofing sheetsextending from eaves to eaves and provided on their opposite edges with upstanding flanges 1) arranged within the channels of the carlines. The adjacent upstanding flanges of adjacent sheets are formed with returnbent portions E and E.

The flange E extends laterally outward or For supporting the sheets I preferably provide a ledge or bracket F projecting from the inner face of the carline, upon which the returnbend of the sheet may rest. In

Figs. 1 and 3 this ledge is shown as an angle bracket-secured to the carline and projecting inward. therefrom, the inner end being curved or inclined downward to facilitate mounting the returnbends of the sheets thereon. Displacement of the sheets. from this support maybe prevented by the depending eaves flanges G, which are apertured for the passage of the bolts H securing the carline to the side-plate of the car. The apertures I in these eaves flanges are larger than the bolts passing therethrough so as to provide a limited freedom of movement to the sheets to compensate for the weaving and flexing of the car, but any movement suf licient to disengage the returnbends from the ledge F will be prevented. Another means of accomplishing the same result is the placing of a stop on, the opposite side of the flanges from the ledge F to limit the movement thereof. Such a construction is shown in Fig. 1, in which J is a stop mem' ber, preferably struck inward from the metal of the carline adjacent to the neutral axis.

This will not materiallyweaken the carline, as the metal which is removed is not in, work and the projecting inner end will form a limiting stop for the flanges.

Where the sheets are made of metal of suflicient gage, they may derive suflicient support from the trussing effect of the upstanding flange and returnbend, and without the addition of any other supporting means. Such a construction is shown in Fig. 2-, and, as shown in Fig. 4, the radius'of the carline longitudinally thereof or transversely of the car is different from that of the sheet so as to exert a downward pressure thereon at the center, piacing the metal under tension.

What I claim as my invention is:

1. In a car roof, the combination with an inverted channel carline of rooting sheets arranged therebeneath and having upstand- 111g flanges adjacent to each-other, the upper portions of said flanges-being returnbent I .in-thesame direction and nested and a shelf returnbent flange to form a support for the within sa d carhne engaging the edge of the a sheet.

2.7 In a car roof, thecombination with an inverted channel carline, of roofing sheets arranged therebeneathand having upstanding flanges centrally of the channel, return bent inthe same direction and nested, the free ends of saidreturnbends being adjacent tothe side of the channel,'a shelf or support within said carline for engaging the free edge of said returnbent'fiange, and a stop for limiting the movement of said sheets to maintain said returnbent flange in ongagement with said support.

In a car roof, the combination with an inverted channel carline, of roofin; sheets arranged therebeneath and having upstanding flanges centrally of the channel, said flanges terminating in portions returnbent in the same direction and nested, a shell or support within said cal-line for engaging the free edge of a returnbent flange, and a stop struck inward from the opposite side of said carline for limiting movement of the sheets.

In a car roof, the combination with an inverted channel carline, of roofing sheets arranged therebeneath and having upstanding flanges adjacent to each other, the upper portions of said flanges being returnbent in the same direction and nested.

In a car roof, the combination with an inverted channel carline, of roofing sheets curved transversely of the roof, arranged beneath said carline and having upstanding flanges adjacent to each other, the upper portions of said flanges being return-bent in the same direction and nested.

In testimony; whereof I afiix my si natnre.

R CHARD W. BURNETT.

Images