US836370A - Carline and method of manufacture. - Google Patents

Description

PATBNTED NOV. 20, 1906.

E. I. DODDS.

GARLINE AND METHOD OF MANUFACTURE.

APPLICATION FILED MAYB, 1905.

flmaea I (5%; s 671% g Ja e/1W2;

, for the purlins and ridge-pole.

'preferaby depressed at s'rarns UNITE i ETHAN l. DODDS, OF PUL'LMAN, COMPANY, OF CHICAGO,

LLMAN CARLlNE AND METl-EQD 0F Specification of Letters Patent.

Patented Kiev. 20, 1996.

Application lllerl'lfiay 8, 1905. Serial No 259.378.

T0 00% whom it may concern.-

Be it known that I, ETHAN l. Dorms, a citizen of the United States, residing at Pullman, in the county of (look and State of 1lli-, nois, have invented certain new and usefu Improvements in Carlines and the Methods of Manufacture, of which the following is a specification.

My invention relates to carlines for railway-cars and methods of manufacturing them, and'pertains more particularly to th at class of carlines which are made of pressed steel.

One object of my invention is to provide an improved car-line combining a maximum of strength and rigidity with a minimum of weight and simplicity of manufacture.

A carline constructed in accordance with my invention is illustrated in the accompanying drawings, wherein' Figure 1 is a side elevational view of my improved carline. Fig. 2 is a top plan view. Fig. 3 is a cross-sectional view, on an en larged scale, entire line 3 3 of Fig. 2; and Fig. 4 is a similar cross-sectional View of a modification, omitting the countersunk seats In constructing my improved carline I take a plain flat rectangular strip of plate steel and press one longitudinal half thereof outwardly from the plane of the strip until the same assumes the low roof-shaped formation illustrated in Fig. 1, thereby producing the oppositely-sloping upper surfaces 5 and the central vertical web 6. This operation, when performed by means of a suitable die, results in. drawing inwardly themetal of the opposite longitudinal half, thereby producing horizontal flanges 7 on the lower margin of the vertical web 6, which flanges start-from substantially the center of the lower margin of said web and gradually increase in width to the ends of the carline. The pressing operation is also preferably so performed as to cause the outwardly-displaced longitudinal half of the strip to contribute a slight portion of its metal to the formation of the vertical web 6, whereby the inclined upper surfaces 5 are slightly narrower at the center than at the ends, tapering slightly on their free edges, as shown in Fig. 2. The upper surfaces 5 are intervals to form seats 8 for the purlins and a central seat 9 for the ridge-pole, said seats being apertured', as

shown at l0, for the passage of bolts uniting 5 5 the carline and purlins. However, the seats 8 and 9, either or both, may be omitted, as shown in Fig. i, desired. in the ends of the purlin are formed the usual holes ll, whereby it may be secured to the pl l claim--- l. A carline having oppositely inclined purlin-supporting surfaces, 9. vertical Web, and flangeson the lr-v e margin of the latter, the parts being-so l the sum 6 of the mdth orths r iii-supper s1. i e, the depth of the vertical web, and b width of the lower is substantia ly the same at all points in the length of the or i. .e, sub st anti ally as'described.

'c-positely inclined 52. l carline harm; o, purlin--supporting s1 slightly increasin in'width from the center to the ends the carline, a vertical lower margin of the latter, the, p being so 7 5 pro )ortioned that the sum of the width of the purlinsuppcrting surface, the depth of thevertical web, and the width of the lower flange is substantially the same at all points in the length of the carline, substantially as described.

A carline having oppositely-inclined purlin-supporting SIl'L'fQCES,Zt vertical web, and flanges on the lower margin of the latter increasing in width from the center to the 8 5 ends of the carline, the parts being so proportioned that the sum of the width of the purlinsupporting surface, the depth of the vertical web, and the width of the lower flange is substantially the same at all points in the length 0 of the carline, substantially as described.

4. A carline having oppositely -inclined nurlin-supporting surfaces slightly increasing I in width from the center to the ends of the carline, a vertical 'web, and flanges on the lowerinargin of the latter increasing inwidth from the center to the ends of the carline, the parts being so proportioned that the sum of the width of the purlin-supporting surface, the depth of the vertical web, and the width of the lower flange is substantially the same at all points in the length of the carline, substantially described.

5. A carline made from a single strip of sheet metal pressed into form to sit-ely-inclined upper surfaces of slightly-in creasing width. from the center to the ends of the carline and provided with countersunk presentoppo- 1 5 tially the seine at all urlin-suppor'ting seats, a vertical Web, and orilzontal flanges. of increasing Width from 'the center to the ends of the car'lin'e on the lower margin of sezid Web, the parts proportioned that the sum of the Width of the upper surface, the depth of the veitieal Web, and the width of the, lower flangeis substanpoints in the length of the csrline, substantially as described.

6. The method of-menufact'uring e carline which consists in pressing a rectangular metal sheet to form oppositelydnclined. purlinsupporting surfaces, a vertical Web, and oneor more horizontal flanges on the lower margin ofthe letter, substantially as described.

7. The method of manufacturing e czirline which consists in pressing a rectangular met sl sheet to form oppositely-inclined purlin siipporting surfaces of slightly-mereasing width being soasses/o I frc m center to the ends, a; v crticel Web,

and one or more horizontal flan es of increasing width from he center to t ie'end sf the lower margin of said Web, substantially as t described.

faces of slightly-increasing Width from the eenterto the ends and providedwith countersunk purlin-supportin seats, a Vertical Web, and one or more suestentially horizontal flanges of increasing Width from the center to the end of the lower margin of said Web, substantially as described.

ETHAN I. DODDSH Witnesses SAMUEL N. POND, FREDERICK C. Goomvm.

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