US83196A - peters - Google Patents

Description

i' i Si* i Hamai meg/@2W (title. if www JAMES "MONTGOMERY, OF OROTON LANDING, YORK. Letters Patent No. 83,196, :lated October 20, 1868; a/n-tedated Octoberl 10, 1868.

The Schedule referred tain these Letters Patent and making part of the Ilma.

To all whom it ma/y concern:

Be itknown that I, J AMES MONTGOMERY, of Oroton Landing, in the county of Westchester, and State ofc New York, have invented a new and' useful Improvement in Beams and Girders, and in fiooring to be used therewith and I do hereby declare the following to be a full, clear, and exact desciiptionof1 the. same, reference being had to the accompanying drawings, which are part of this specification.`

Figure l represents a transverse section of a Acompound girder illustrating my invention.

Figure 2 is a transverse section of a pair of joistbeams with flooring applied.

Figure 3 is a side view of a portion of one of the beams shown in ig,=2.

Figure 4 is a transverse .section of a joist, illustrating a mode'f keying flooring thereto.

Figure 5 is a transverse section illustrating a -modification in the manner of jointing together or assembling the beams.

Figure 6- is a transverse section of a girder, showing the end of v a joistl or beam applied thereto.

The objects 'of `my invention are-- First, to so' construct iron or steel beams and girders, that the principal weight of metal will be located in points where the chief tensile and compressive forces. will be sustained.

Second, to provide convenient means for assembling two or more beams or girders,l in such a manner that tht?7 will mutually support each other.

hird, to provide means whereby flooring may be secured to beams without nails or bolts.

In the drawings, A A represent the heads or flanges of my improved beam, and B the web, which tapers in thickness from each head or flange toward the centre, and isconnected to the heads by curved shoulders C C.` By thispspecrfic form, I apply the greatest thickness of metal in parts where thechief tensile and crushing strains are sustained, and thus produce a beam which will aiibrd the greatest possible strength Witha given weight of material.

D D representi'ibs or fianges for supporting the under i surface of the flooring F, as shown in figs. 2 and 4.

E and G are respectively tongues and grooves formed upon the edge of the heads or flanges A, to adapt the beams to mutually' support each other when they are assembled together, as illustrated in iigs. 1, 2, and 4.

Each beam constituted of the parts A A, B, C C, D D, E, and G, l propose to roll in one piece of iron or steel, by means ofsuitable machinery.

7Where additional strength is required, any number of beams may be placed side by side, in the manner illustrated .in g. 2, and secured by bolts H passing through their webs B, from one side to another of the series, or two, four, vor more beams may be placed one above another, as illustrated in fig. 1,.and secured by vertical bolts I. A cluster of four, or even two beams, assembled in this manner, will constitute a girder of great strength in proportion to its weight.

Fig. 3 illustrates my mode of applying the connecting-bolts H, Said bolts being made ofthe required length, with two solid heads h h, of oblong form, are passed through horizontal slots h', of such size and shape as just to vadmit the heads, and the bolt being then turned one-quarter round, so as' to bring its heads It' at right angles to the slots h', the bolt will be firmly held in place, and by reason of the extremities of A the bolt-heads being made to rise up on thicker portions of the webs, will wedge or compress the beams together with greatfo Forsecuring flooring to the beams without bolts, nails, or ri'v'ets, I form, on the under surface of the planks F, recesses of proper size to pass over the beamheads, and having moulded faces f f', which may be formed `by a rotary 'cutter to adapt the planks to fit against one edge and shoulder of the head.

K represents a key formed to fit on one side or face f of the recess, and on the other, the opposite edge and shoulder oi' the beam-head. As each plank is placed over the beams, it is slipped endwise until the moulded face f is brought home against the side of the head, and the key K is then driven in to secure it.

In iig. 5, is shown a slight modification in the mode of forming the tongues and grooves to connect the beams, one halfof each tongue being formed on the upper,

and the other half on the lower fiange of the beam,A

and so of thegrooves, to adapt the beams to fit together.

Lighter flooring may be secured by engaging under the edge of the beam-head, as shown in g. 5, or engaging in the groove only, as illustrated by red lines in fig. 4.

Fig. G'illustrates a modification in the construction oi" the compound girders,the central flanges being extended horizontally to receive and. support the cross-beams B.

In practice, however, I prefer to form the ends of said cross-beam B', by means of suitable machinery, so as to adapt them to fit within the irregular-curve side of the girder, as illustrated in tig. l, so that any lateral extension of the central flanges beyond the width shown in iig. ,l may be unnecessary.

My improvements in beamsv and ooring are applicable to marine as well as land architecture.

The compound -beams may be made to form tubes for the conduction of hot air, gas, water, or for domestic purposes, and it is my intention soto use them.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent, is` f* 1. A beam or grder, formed with heads A A, eon- 3. I also claim the` flanges D, for supporting the yeted, by converging shoulders C G, to a web, B, ooring F, in the manner specified. lich tapers from both heads towards its mid-With or 4. In combination withzt beam or girder, constructed Lnsverse centre, substantially as and for the purpose as set forth -in the rst clause, I claim the bolt o1' key LpIzLDed. H hf, applied and operating as explained 2. I further claim, joiuting together two o1 more of JAMES MONTGOMERY. y improved beams, in substantially the manner herein Witnesses; scribed, so as to make them mutually support eaeh L E, M BOWEN, her. W. H. BRERETON.

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