US1718029A - Car roof - Google Patents

Description

June 18, 1929. C, D, BONSALL 1,718,029

CAR ROOF Filed Aug. 4, 192'? @Manzi .af/As @Tron/wam,

Patented June 18, 1929.

UNITED vSTATES CHARLES DAVID BONSALL, OF PITTSBURGH, PENNSYLVANIAQASSIGNOR T0 P. H.

MURPHY COMPANY, 0F NEW KENSINGTON, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

CAR R0 OF.

Application filed, August 4:, 1927. Serial No. 210,484.

This invention relates to rigii'l all-steel car roots4 of the riveted-up type wherein self-supporting root sheetsy extend troni side plate to side plate ot the car and are rigidly secured together alongl their adjacent side margins by hollow upstanding weathei prooliiig seams which function as rooil supporting carlines.

The principal object of the present invention is to increase the strength and rigidity of the above type of root by strengthening and stitl'ening the root seams in the region oli the ridge. Another object is to increa-1c thewiatherprooling qualities ol't 'the seam al: the ridge. Other objects are simplicity and cheapness ot construction, lienuiese of parts, ease ot assembly and coinpactness oi' design. The invention coiisists princijially in providing the hollow upstanding seams with reinforcing and stiflening members which are secured within said seams on opposite sides ot' the ridge and terminate short oit the caves. lt also consists in j )rovidingl the running board saddles with iianges tor wealherprooting the joints between the lapped scam flanges at the ridge; and it also consists in the parte and in the arrangeinei'iis and conibinations ot parts liereina'tlia' (e scribed and claimed.

ln the zwconipanyinfy drawing, which forms part ot this specitu'aition and wherein like symbols reiter to like parts wherever they occur,

Fig. 1 a plan view oit a portion oi' the cur root embodying my invention,

lllig. 2 is a transverse section through the rooil between seams on the line 2-2 in Fig. 1;

Fig. 3 is an enlarged transverse section through the ridge portion oi: the root', the section being taken along` the line 3m-ifi in Fig. 1;

Fig. 4 is a Vertical cross-section through the seain at the ridge on the line 1M/t in Fig. 3; and f Fig. 5 is `a similar cross-section through the seam, the section beingl taken through one ot the seam stiifeners on the line :SM5 in Fig. 3.

Referring to the accompanying drawing, my invention is shown in connection with an all-steel, Single course car root coinprisinel Z-bar side plates (i, which are arranged with ,their ribs horizontally with their inner flanges projecting upwardly. i Heavy gage nietal roolf sheets 7, extend transversely ot the car troni side plate to side plate and are provided with depending eaves llanges tl which overhang and are riveted or otherwise seciilred to the outer `faces of the upstanding inner lianges ol the side plates. The root sheets 7, which are pressed from blanks 'et uniform width. slope downwardly on opposite sides of the ridge to forni a hip or arcuate root', and `are provided along' their adjacent side margins with raised ribs A vvhiclrare lapped and rigidly secured together to torni hollow upstanding .faccina which function as earlines. As shown in Vthe drawing, each ot theseside .marginal ribs A comprises` a iange or web portionV tl which extends upwardly .troni the body oit he sheet and has at. the top thereoi allat l'lange or portion 1() that extends outwardly or laterally with relation to the body ot the sheet. The webportion 9 ot each side inarginal rib A gradually diminishes in height towards the eaves; and the surplus metal` gained. thereby is turned down at ouer edge olf the horizontal flange portion 1() ot said rib in the torni ot a depending 'liange 11. This causes the ribs A, which are ot .inverted L-shaped section atthe ridge, to gradually assume an inverted channel-shaped section i on opposite sides oit the ridge. As the web portions 9 of the lapped ribs A dinfiinish in depth towards the eaves, there is a correspondingincrease in the depth of the depending' iianges 11v thereof towards the eaves. Atx-the eaves ends olf the sheets, the lapped ribs A arecurved downwardly and merge into the plane of `the body ot the sheets where said sheets are turneifl down to torni the depending eaves flanges 8; and the lateral langes 12 that appear at the cavee ends of said lapped ribs are the surplusl oE inetal resulting from the downwardly curved eaves end portions thereof, which metal is turned outwardly to form `said lateral langes 12.

As shown in the drawing, the root is braced and stiitened at the angle between root sheets ot the side plates by means ot angle-shaped brackets 13 located beneathl `the eaves end portions of the hollow upstanding roof seams or carlines. The angle lil-acheteI 13 are arranged with one tlange vertical and rigidly secured tlatwise ot the inner tace oil' the upstanding inner flanges of the side plates and with the other flange projecting inwardly below the seams and rigidly se cured on opposite sides thereof to the bodyv l of the carat the ridge and rest on and are bolted to the upwardly offset outer marginal portions of the top flanges of angle shaped running board saddles 15, which flanges rest on and are riveted or otherwise rigidly secured to the tops of the hollow upstanding roof seams. The other flanges 16 of the angle-shaped running board saddles project downwardly, vand the saddles are positioned over the seams so that the depending flanges 16 thereof overhang the joints between the lapped top flanges 10 of the ribs A which form said seams and thus serve to weatherproof said joints.

Additional strength and rigidity are impartedto the roof by a metal reinforcing or stiffening member 17 located within each seam on each side of the. ridge. As shown in the drawing, the reinforcing and stiffening members 17 are of substantially inverted channel-shaped section and extend longitudinally of the seam and snugly fit within the hollow upstanding roof seam. The inverted channel-shaped reinforcing and stiffening members' 17 have their web portions rigidly secured flatwise to the top flanges of the lapped ribs A of each seam by the rivets which secure said'rib together. The two stifl'eners and reinforcing strips 17 in each seam are preferably spaced apart on opposite sides of theridge and are arranged with their adjacent ridge end portions deposed beneath and rigidly secured to the outer end portions of the running board saddles 15 by the securing rivets therefor. The two seam stiffeners for each seam extend far enough beyond the ends of the running board saddles to secure the desired stiffness for the roof seams between the ridge and eaves. By vthe arrangement described, the seam stiffeners 17 and running board saddles l5 are rigidly secured to each other and to, the hollow seamsl and thus serve to greatly` `increase the load carrying capacity of the roof by strengthening andV stiffening the ridge portions lof .said hollow roof seams against bending or buckling under vertical load. It is noted that the depending flanges. 16 of the running board saddles serve to weatherproof the ridge portions of the seams which comprise mere overlapping flanges.V

The 'hereinbefore described arrangement is applicable to roofs having side plates and seams of various crosssections, and I do not wish to be limited to the exact side plate and seam construction shownk and described.

What I claim is: i

l. A car roof comprising load sustaining roof sheets connected by rigid seams, running board saddles rigidly secured to said seams, and stiffening means secured to said seams between the ridge and eaves of the car and to the ends of said running board saddles whereby said stiffening means cooperate with said i'unning board saddles to strengthen and stiffen the ridge portion of the roof.

2. A car roof comprising load sustaining roof sheets connected by rigid seams, running board saddles rigidly secured to said seams, and seam stiffeners rigidly secured to said seams between the ridge and eaves of the car with their ridge end portions rigidly secured to the adjacent end portionsvof said running board saddles.

3. A car roof comprising load sustaining' roof sheets connected by rigid seams, running board saddles rigidly secured to said seams, and flanged seam stiffeners extending longitudinally on each seam on opposite sides of the ridge and rigidly secured to said seam, said flanged seam stiffeners having their adjacent ridge end portions disposed .beneath and rigidly secured to the ends of the running board saddles and their outer end portions terminating beyond the ends of said saddles.

4. A car roof comprising load sustaining roof sheets connected by hollow upstanding seams that function as carlines, running board saddles rigidly secured to said seams, and reinforcing strips located within and rigidly secured to each of said hollow seams, said seam stiffeners being located between tlie ridge and eaves of the car with their adjacent ridge ends extending beneath and rigidly secured to the ends of said running board saddles.

5. A car roof comprising self sustaining roof sheets which extend from eaves toV eaves of the car and are connected along their side margins by hollowupstanding seams whose ridge section comprises overlapping inverted L-shaped flanges at the side margins of adjacent sheets, and metal running board saddles resting on and rigidly secured to said overlapped seamv flanges at the ridge, said running board saddles being Y provided with depending flanges which extend substantially the full length of said saddles and overhang the outer edges of the overlapping seam` flange of each seam.

Signed at New Kensington, Pennsylvania,

this 29th day of July, 1927.

CHARLES DAVID B'ONSALL.

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