US2335383A - Car roof - Google Patents

Description

Nov. 30, 1943. c. D; BoNsALl.

GAR ROOF Filed April ll, 1942 /A/ VEA/Toe:

Patented Nov. 30, 1943 CAR ROOF Charles David Bonsall, Chicago, Ill., assignor to Standard Railway Equipment Manufacturing Company, a corporation of Delaware Application April 11, 1942, Serial N0. 438,546

(Cl. S-5.4)

7 Claims.

This invention relates to metal car roof constructions of the type shown in my Patent No. 1,627,372 wherein the roof sheets extend from side plate to side plate of the car and have raised panels along their adjacent margins and upstanding flanges along the adjacent edges of said panels that are rigidly connected by a seam cap having outstanding base flanges that rest on said panels, whereby said panels, flanges and seam cap cooperate so as together to form a standing seam construction which functions as an outside carline or load carrying member of the roof construction. The principal object of the presentin- 'vention is to increase the strength, rigidity, durability and Weatherproong qualities of the above l seam construction. The invention consists in continuing the base flanges of the seam lcap outwardly beyond the raised side marginal panels of the roof sheets and thence offsetting themarginal portions of said base anges downwardly to bear against the lower plane portions of said sheets, thereby providing clear spaces between said base flanges and said sheets along said panels that serve as drain channels for any water that leaks beneath the outer edges of said base flanges and that also serve to break the line of contact between said base flanges and sheets and thus prevent flow of vwater through the seam by capillary attraction. The invention also consists in the parts and in the arrangements and combinations of parts hereinafter described and claimed.

In the accompanying drawing, which forms part of this specification and wherein like symbols refer to like parts wherever they occur,

Fig. 1 is a plan View of a portion of a car roof construction embodying my invention,

Fig. 2 is an enlarged Vertical transverse section through the eaves portion of the roof, the section being taken adjacent to one of the roof seams on the line 2-2 in Fig. 1,

Fig. 3 is a fragmentary perspective view of the eaves portion of the roof in the region oi one of the roof seams,

Figs. 4 and 5 are enlarged fragmentary vertical longitudinal sections through the roof on the lines 4-II and 5-5, respectively, in Fig. 2; and

Fig. 6 is a fragmentary horizontal section through the roof at the side plate on the line 6-6 in Fig. 2.

In the accompanying drawing, my invention is shown embodied in a car roof comprising metal side plates A of substantially Z-shaped crosssection with the inner legs I upstanding and having inwardly extending top flanges 2 disposed at an angle conforming to the pitch of said roof., Metal roof sheets B span from side plate to side plate and rest on the inwardly extending top flanges 2 thereof. The roof sheets have depending eaves flanges 3 that overhang the upstanding inner legs I vof the side plates A and are rigidly secured to the outer faces of the inner legs I thereof by horizontal rivets 4.

As shown in my Paten-t No. 1,627,372, the roof sheets B have raised fiat-topped panels E along their adjacent side margins and upstandi-ng flanges 6 along the edges of said margins that are covered by an inverted U-shaped metal seam cap C that is secured by rivets 1 to said flanges and has outstanding base yflanges 8 that seat on said panels, whereby Ysaid panels, flanges and seam cap cooperate so as together to form a Arigid standing seam which -f-unctions as a load carry,- ing member or outside carline of the `roof struc@ ture. As shown in the draw-ing, the seam cap and seam flanges -I decrease indepth from points inwardly of the side plates to the eaves where they are turned down with the eaves Vflanges 3 over `the vertical inner legs -I of said side plates. As ythe depth of the vseam `flanges 6 and seam cap C decreases, Ythere ifs -a corresponding in.- crease yin the width of the raised side marginal panels 5 of the roof sheets and the Abase ila-nges 8 of said cap towards the eaves, saidbaSe -an'ges and panels terminating 1flushgwith the lower edge of the depending eaves -anges 3 of the roof sheets.

According to the present invention, the outstanding base flanges 8 of the seam cap C are extended, as at 9, beyond the inclined shoulders I0 formed on the roof sheets by the raised side marginal panels 5 thereof and are thence inclined downwardly, as at II, at an angle corresponding substantially to the slope of said shoulders to the lower plane portions of said sheets Where they terminate in depressed side marginal panels I2 that seat or bear upon said lower plane portions of said sheets. As shown in Fig. 6, a filler plate I3 is disposed between the upstanding leg I of each side plate and the downturned end of the side marginal panels 5 of adjacent roof sheets and is held in place by the rivets 4 that secure the depending eaves end of the roof sheets and seam caps to the side plates. By this arrangement, spaces I4 are provided between the roof sheets and the base flanges 8 of the seam cap along raised side marginal panels 5 of said sheets, and these spaces extend continuously from end to end of said sheets and cap, including the downturned eaves portions thereof, and are preferably left open to the atmosphere at their lcwer ends. The spaces I4 serve as drain channels or passageways for carrying away any water that leaks beneath the depressed outer margins l2 of the base iianges 8 of the seam cap; they also serve as Ventilating channels to keep said spaces dry; and they also serve to break the line of contactpbetween the roof sheets and said base flanges and thus prevent further ow of Water into the seam by capillary attraction. The outwardly extended downwardly offset portions of the seam cap also serve to increase the strength, rigidity and durability of the standing seam construction, as well as increasing the weatherproofing qualities thereof.

What I claim is:

1. A car roof comprising side plates, roof sheets extending from side plate to side plate and having raised nat-topped panels along their adjacent margins and upstanding flanges along the adjacent edges Vofsaid panels, and seam caps `Gpvvering said anges and having outstanding base flanges which seat on said panels and extendoutwardly therebeyond and have depressed marginal panels which seat on the body portions of said sheets, thereby providing spaces between said roof sheets and base flanges along the remote sides of said panels.

A 2. A car roof comprising side plates, roof sheets extending from side plate to side plate and having raised flat-topped panels along their adjacent margins and upstanding flanges along the adjacent edges of said panels, and seam caps covering said flanges and having outstanding base flanges which seat on said panels and extend outwardly therebeyond and have depressed marginal panels which seat on the body portions of said sheets, thereby providing spaces between said roof sheets and base flanges along the remote sides of said panels, said roof being turned down vover and rigidly secured to the vertical faces. of said side plates and said spaces being left open at the ends.

3. A roof for a railway car having spaced side plates, said roof comprising roof sheets extending between and secured to the side plates and` having body portions with raised panels along their adjacent margins with upstanding iianges along the adjacent edges of said panels, and a seam cap straddling said flanges and having outstanding base portions which extend outwardly said roof sheets and said base portions along the remote sides of said panels.

4. A roof for a railway car having spaced side plates, said roof comprising roof sheets extending between and secured to the side plates and having body portions with raised panels along their adjacent margins with upstanding flanges `along the adjacent edges of said panels, and a seam cap straddling said flanges and having outstanding base portions which engage said raised panels and which extend outwardly beyond said panels and have depending marginal portions whichengage the body portions of said roof sheets, thereby providing spaces between said Yroof sheets and said base portions along the re-l mote sides of said panels.

5. A cal` roof as defined in claim 3, wherein the roof sheets, raised panels and seam cap are turned down over the side plates and said spaces are open at the lower ends thereof.

6. A roof for a railway car having spaced side plates, said roof comprising roof sheets extending between and secured to the side plates and having body portions with raised panels along their adjacent margins, and a seam cap secured to said roof sheets and overlying said raised panels and having portions which extend outwardly beyond said panels and have depending marginal portions which engage the body portions of said roof sheets, thereby providing spaces between said roof sheets and said portions along the remote sides of said panels.

7. A roof for a railway car having spaced side plates, said roof comprising roof sheets extending between and secured to the side plates and having body portions with raised panels along their adjacent margins with upstanding ilanges along the adjacent edges of said panels, and a seam cap straddling said flanges and having outstanding base portions which extend outwardly beyond said panels and have depending mar'- ginal portions which extend below the level of the tops of said panels into proximity to the body portions of the roof sheets, thereby providing spaces between said roof sheets and said base portions, along the remote sides of said panels.

CHARLES DAVID BONSALL.

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