US870721A - Car-roof. - Google Patents

Description

vN0. 870,721. PATENTED NOV. 12, 1907.

W. N. GARRETT.

OAR ROOF.

APPLICATION FILED BBPT.21.1906.

2 SHEETS-SHEET 1.

J Nb.870,721.

PATENTED NOV. 12. 1907.

N. GARRETT.

7 CAR ROOF.

' J Jes. -W

UNITED STATES PATENT OFFICE.

WVILLIAM N. GARRETT, OF AMHERST, NOVA SCOTIA, CANADA, ASSIGNOR OF ONE-HALF TO HAROLD H. ROBERTSON, OF CANTON, MASSACHUSETTS.

CAR-ROOF.

Specification of Letters Patent.

Patented NOV. 12, 1907.

Application filed September 21. 1906. Serial No. 335,670.

To all whom it may concern:

. Be it known that 1, WILLIAM N. GARRETT, a citizen of the United States, and now residing in Amherst, Nova Scotia, Canada, have invented an Improvement in Car-Roofs, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to a roof construction especially designed and adapted for use on railway cars, and has for its object to provide a simple and efficient car roof, which is strong, durable, substantially fire and water and acid proof, inexpensive and easy of application. For thispurpose I employ as the essential feature of the roof construction sheets of'steel or other metal, preferably covered on their opposite sides with layers of asbestos or mineral wool which are cemented to the opposite sides of the metal sheets, and provide means for forming a water-tight joint between adjacent composite sheets and for firmly securing said composite sheets in place, as will be described.

Figure 1 is a side elevation with parts broken away of a railway car provided with a roof embodying this invention. Fig. 2, an end elevation, with parts omitted, of the car shown in Fig. 1. Fig. 3, a detail in plan of a portion of the roof shown in Fig, 1. Figs. 4, 5, 6 and 7, sectional details on an enlarged scale to be referred to, and Fig. 8, a detail of the composite sheet employed by me.

Referring to the drawings and especially Fig. 7, a represents the side or eave plates which are connected by the carlines b, having their upper edge inclined downward from the center and mortised to receive the ridge pole c and purlins (I, the upper surface of the latter being flush with the upper surface of the cal-lines b.

The ridge pole c is grooved longitudinally on its opposite sides to receive the inner ends or edges of the composite sheets, which comprise sheets e of steel or other metal having layers f of asbestos or mineral wool cemented to the opposite sides or surfaces of said metal sheets as represented in Fig. 8.

The composite sheets constitute an essential part of the car roof and render the same substantially fire-proof. Provision is made for securing adjacent composite sheets in such manner as to form a water-tight and fireproof joint and for this purpose, the sides of adjacent sheets are provided with upturned flanges g (see Fig. 4), which abut and are protected by a covering strip or cap h of metal and preferably of the same materials as the composite sheets, which caps are provided with a recess 1' for the reception of the upturned side flanges of the adjacent composite sheets and have side flanges j which rest upon adjacent composite sheets.

The covering strips or caps h as well as the composite roofing sheets are secured in place by auxiliary or intermcdiate carlines or battens It provided with longitudinal recesses or grooves m for the reception of the bent or recessed portion of the caps h as clearly shown in Fig. l. The battens k may and preferably will have their inner ends provided with tcnons n which extend into mortises 0 in the ridge pole c, as clearly shown in Fig. 6. The intermediate carlines or battens k are socured at their outer ends by the screws 7) to the side plates a (see- Fig. 5). I

The composite roofing sheets may have their outer ends or edges firmly secm'ed by metal clamping pieces 10, (see Figs. 5 and 7), which are interposed between the frieze 12 and facia 13 to form a space for the circulation of air and water and to allow oscillation of the sheets, the said metal clamps being firmly secured to the side or even plates by the bolts 14, which extend through the frieze l2, facia 13, side boards 16 and cave plates a as clearly shown in Fig. 5. The metal clamps may be additionally secured to the facia 13 by screws 17.

The composite sheets may be covered by the usual wood roof 20, which is nailed to the ridge pole c, frieze 12 and intermediate purlins 2l. which latter rest upon the battens or intermediate carlines is. "he oudmost composite sheets may be provided with a down-turned flange 23 as shown at the left in Fig. 2.

From the above description it will be seen that the car roof is rendered substantially fire and water proof, is simple and ellicient and can be made at a minimum cost. If desired the central joint 24 formed by the two halves of the roof 20 may be covered by a strip 25 of the composite roofing sheet, secured to the roof by nails 26.

Claims.

1. 1n a car root, in combination, a ridge pole provided in its sides with longitudinally cxtcndcd grooves and with mortiscs, rooting sheets of the character described having their inner ends extended into said'grooves and provided with rip-turned side [lung-cs. metal caps or covering strips provided with recesses into which the upturned flanges of adjacent roofing sheets extend, battens 0t fibrous material recessed on their under side to lit snugly over said caps and force the sides of said caps into contact with the upturned flanges on said sheets, and provided at their inner ends with tenons to extend into the mortiscs in the said ridge pole, and means to secure said battens in fixed position, substantially as described.

2. In a car roof, in combination, a plurality of roofing sheets having upturned side flanges, metallic caps fitted over the upturned flanges of adjacent roofing sheets and provided with side flanges resting on said sheets, battens of fibrous material grooved or recessed on their under side to fit snugly over the said caps to force the upturned flanges into contact, and means to secure said battens in fixed positions and force the side flanges on the cap into 10 contact with adjacent roofing sheets, substantially as described.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing Witnessesf WILLIAM N. GARRETT.

Witnesses FRANK FAUs'r, H. O. PHILLIPS.

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