US1130372A

US1130372A - Metal car-roof.

Info

Publication number: US1130372A
Application number: US80344813A
Authority: US
Inventors: William A Brewer
Original assignee: PH Murphy Co
Current assignee: PH Murphy Co
Priority date: 1913-11-28
Filing date: 1913-11-28
Publication date: 1915-03-02
Anticipated expiration: 1932-03-02

Description

W. A. BREWER.

METAL CAR ROOF.

APPLICATION FILED NOV. 28, 1913 Patented Mar. 2, 1915.

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Patented Mar. a, rare.

Application filed November 28, 1913. Serial No. 803,448.

To all whom'it may concern of'the city of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new'and useful Improvement in Metal Car-Roofs, of which the following 1s a specification.

The invention relates to roof structures composed of metal roof sheets supported on the sheathing boards or roof substructure of a railway car.

The object of theinvention i s'a watertight car roof which will not 0 to pieces when subjected to the wear an tear of service.

A further object of the invention is a sheet metal car roof which can 'be securely fastened in place upon a car, and which can be cheaply made and readilyrepaired and replaced.

Other objects of the invention appear in connection with the following description, and the invention is more particularly defined in the appended claims.

The invention consists in the roof sheet, joint strip, cover and fastenings therefor, and in the combinations of the several parts with the roof substructure, as hereinafter described.

In order that a clear understanding of the invention may be had, there'a're shown in the accompanying drawings examples of the application thereof to a car roof.

In the drawings, in which like characters designate like parts in the several views, h

Figure 1 is a transverse vertical cross section of the ridge portion of a freight carroof, showing a running board partly in side elevation; Fig. 2 is a lengthwise vertical cross section of the roof along the ridge taken on a line at right angles to Fig. 1; Fig. 3 is a transverse vertical cross section through the eaves of the car roof shown in Fi 1 and 2; Figs. 1 and 5 are an end View 05 the roof sheet ,and an end view of the joint strip, respectively; Fig. 6 is an end view of a roof sheet having a joint strip ortion integral therewith; and Fig. 7 is a en 'thwise vertical cross section at the ridge of a roof equippedwith roof sheets like that shown in Fig. 6.

The principal members of the roof are wide metal roof sheets 11 extending crosswise of the'car from came to eaves and supported on the roof sheathing 12. The caves ends of the roof sheets are doubled under,

the rebent portions 13 being hooked into similarly rebent margins 14 of flashing strips 15 overl ing the ends of the roof sheathing boards. The outer ends of the roof sheets-terminate short of the ends of the roofboards, and together with the flashing strips, lie in rabbets in the upper sides of'the endsof the roof boards. The eaves flashing strips have their outer margins turned down over the eaves ends of the roof sheathing boards and securely nailed to fasciaboards 16 which are bolted to the side plates 17. These eaves flashing strips project inward 'over the upper ends of the side sheathing boards 19 and fascia boards 16, and "their inner rebent margins 14 not only prevent water from passing under the eaves ends of the roofsheets, but also hold the eaves ends of'the roof sheets on the roof.

The side margins of the roof sheets are doubled under, and the edge portions 20 of the sheets overlapping the doubled under portions 21 are bent up at an angle of slightly less than 90 degrees from the plane of the sheets. The doubled under margins 21 of the roof sheets diverge slightly from the bent up portions, and also stand at nearly right angles to the plane of the sheets. The doubled portions form inverted U- sha e marginal flanges or ribs.

he roof sheets are spaced apart length- Wise of the car and joint strips 22 are laid'in the spaces between them, the joint strips aving upstandin marginal flanges 23, which are positioned under the marginal flanges 21 of the roof sheets. The ends of the joint strips are turned under, the rebent portions 24 thereby formed being hooked into'the rebent portions 14 of the flashing strips, as shown in Fig. 3.

Inverted channel .shape seam covers 25 are arranged over the joint strips. The lower edges 27 of the vertical side walls 26 substructureat the ridge by means of iron 33 surrounding the holes in the joint strips through which the bolts 30 pass. These holes have upturned margins 34 for preventing water from creeping into the car at these points.

Sheet metal shields 35 are placed across the running board saddles, covering the holes for the bolts 30. The running boards 36 are arranged above the shields, and are nailed or otherwise secured to the gunning board saddles. The thimbles and bolts together form a pivotal securing means for the joint strips and seam covers, restraining them from lateral bodily movement on the roof substructure while permitting the joint stripsto have suflicient pivotal movement to enable them to accommodate themselves to the racking and twisting of the car in service. The seam covers clamp the roof sheets down on the substructure, and prevent them from raising ofl' the roof, at the same time permitting them limited lateral movement on the roof sub-structure. The side marginal flanges and eaves flanges prevent the root sheets from creepin too tar on the root.

The roof sheet 37 illustrated in Figs. 6 and 7 is similar to the roof sheet 11, having rehent ends 13 and upstanding side flanges 20, 91 forming an inverted V-shape flange along one side margin. The opposite side margin of the sheet has an upstanding fold or corrugation 38 spaced from its edge and parallel with it, and a straight upstanding flange 39 along its edge. The portion of the sheet 40 between the corrugation 38 and flange 39 is similar to the joint stri 22, having a flanged hole 41 at the ridge or the securing bolt, and rebent eaves end flanges 4:2 for engaging with the flange 14 of the eaves flashing 15. The flange 39 is arranged under the U flange of the adjacent sheet, and a seam cover 25 is placed over both in the same way as is illustrated in Figs. 1 to 5.

One advantage of the construction illustrated in Figs. 6 to 7 is that the roof sheets are each securely fastened to the roof substructure at the ridge near one side margin by the bolts 30, and thus are kept from creeping ofl the root. The fastening is at one point only, and permits of pivotal movement of the'sheet, and the corrugation 38 provides some flexibility in the sheet itself, whereby the sheet is enabled to accommodate itselt to the twisting of the car in serv- Although two embodiments of the invention have been described in full, the invention is not restricted thereto.

ll claim the following as my invention:

1. In a car roof, metal roof sheets having main portions extending from caves to eaves maoeva and each provided with inverted U-shape flanges'along a side margin, inverted channel-shape seam covers spanning the marginal flanges of adjacent roof sheets, and resting upon the main portions thereof, sheet metal channels adjacent to the side margins of said roof sheet main portions, and each having a marginal flange projecting up under the U-shape flange of the main portion of an adjacent roof sheet to form a flexible watertight joint therewith, said seam covers covering the open tops of said channels and having end walls closing the ends thereof, and pivotal securing means for said channels at the ridge, said roof sheets and channels being free to more upon the root substructure at other joints.

2. ln a cal-root, in combination witha roof covering comprising root sheets extending from caves to eaves, and connectible by flexible joints along their side margins, seam covers spanning said joints out of contact therewith, and arranged to bear on said root covering adjacent thereto, ridge bolts passing through said seam covers and root covering, thimbles surrounding said ridge bolts and bearing on the root covering and inclosing the bolt holes therein, said thimbles extending through said seam covers, and means associated with said bolts for closing the tops of said thimbles and clamping said thimbles and seam covers upon said root covering.

3. lln a car roof, in combination with a roof covering comprising root sheets extending from eaves to eaves, and connected by joints along their side margins, seam covers spanning said joints out of contact therewith, ri ge bolts passing through said seam covers and root covering, thimbles surrounding said ridge bolts and bearing on the roof covering and inclosing the bolt holes therein, said thimbles extending through said seam covers, and means associated with said bolts for closing the tops of said thimbles and clamping said thimbles upon said root covering.

l. lln a car roof, in combination with a roof covering comprising roof sheets extending from eaves to caves, and connected by joints along their side margins, seam covers spanning said joints out of contact therewith, ridge bolts passing through said seam covers and roof covering, thimbles surrounding said ridge bolts and bearing on the roof covering and inclosing the bolt holes therein, said thimbles extending throu b. said seam covers, and running board sa dles arranged on said seam covers and provided with recesses on their under sides to receive said thimbles, said ridge ,bolts securing said running board saddles and thimbles in place.

5. A metal car root comprising root sheets each of which has an inverted U-shaps flange projecting up from and overhanging one side margin, the vertical sides of said flange being spaced apart, and a straight flange projecting up from the opposite side margin, the U-shape flange of one sheet inclosing the straight flange ofthe next sheet, an inverted U-shape corrugation formed in each sheet intermediate said flanges and parallel therewith, said corrugation having its sides spaced apart, securing means for said roof sheet positioned in the channel between said flange and corrugation, and an inverted channehshape seam cover straddling said flange and corrugation and cooperating therewith to form a watertight joint.

6. A metal car roof comprising roof sheets, each of which has an invertedU- shaped flange projecting up from and overhanging one side margin, and a straight flange projecting up from the opposite side margin, said straight flange being of less height than said U-shape flange, the U-shape flange of one sheet inclosing flange or" the next sheet, an inverted U-shape corrugation formed in each sheet intermediate said flanges and parallel therewith, said the straight corrugation being of approximately the same height as said straight flange and forming therewith a gutter, holes for securing bolts in said gutter and an inverted channel-shape seam cover straddling said flange and corrugation and cooperating therewith to form a watertight joint.

7. A roof sheet for a metal car roof, said roof sheet extending from caves to eaves and having an inverted U-shape flange projecting up from and overhanging one side margin, and a straight flange projecting up from the opposite side margin thereof, an inverted U-shape corrugation formed in the sheet intermediate said flanges and parallel'therewith, said corrugation being near to said straight flange, and a flanged bolt hole in said roof sheet between said corru gation and straight flange at the ridge.

Signed at Pittsburgh, Pa, this 21st day. of November, 1913.

WILLIAM A. BREWER.

Witnesses:

EDWARD T. VAUGHN, JOHN B. DESMOND.