US379978A - Joseph plattenbueg - Google Patents

Description

J. PLATTENBU'RGL OARFLOOR FRAME.

' Pa tentd Mar. 27:, 1888 J Witnesses Inventor CQIQEW. 5%

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Attorney o UNIT D STATES PATENT omen JOSEPH PLATTENBURG, OF MOKEESPORT, PENNSYLVANIA.

.VCAR-FLIOOR FRAME.

SPECIFICATION forming part of Letters Patent No. 379,978, dated March 27, 1888. Application filed December 5,1837. Serial No. 256,977. (No model.)

comparatively light timbers extraordinary vertical stiffness is secured.

My improvements will be readily understood from'the following description, taken in connection with the accompanying drawings, in which- Figure 1 is a perspective view of the car- 'floor frame exemplifying my improvements,

. one of the strain-blocks.

floor-timbers; G, holes transversely through.

the strain-blocks, a pair'of holes being located near each end of eachblock and near the top thereof; H, flanges formed upon the ends of the strain-blocks, and serving as means by which the strain-blocks may be rigidly secured by bolts holding the flanges in vertical transverse gains in the sills and intermediate floortimbers; J, end rods inclined downwardly, from the strain-blocks to and through the end sills, there being a pair of rods for each strainblock, one of the rods lying near the appropriate sill and one near the appropriate intermediate floor-timber, each rod being provided with a nut at each end seating against appropriately-beveled nut-seats on the end sill and strain-block, respectively; and K, body trussrods provided with nuts at each end, each rodextending from a strain-block toward and under the cross-frame tie-timbers, thence upwardly and into engagement with the appropriate strain-block at the other end of the car, two of these body truss-rods engaging each strain-block, one rod lying as closely as practicable against the inner side of the appropriate sill, while the'other rod lies similarly near the outer side of theappropriate intermediate floor-timbers.

The flooring over the floor-frame should be removable or be provided with traps over the body-bolsters, so that the rod-nuts at the strain-blocks can begotten at from above. The end rods can be strained by means of the nuts at either end sill or strain-blocks. By removing the inner nuts onthese end rods the rods may be readily withdrawn outwardly through the end sills, thus rendering constructiomrepairs, and renewals of these rods a matter of ease.

The body truss-rods strain from positive points over the body-bolsters, which represent the supporting-points in the length of the car. These rods are put under proper strain by means of their endnuts. These nuts, .being removed, permit of the rods being-readily removed for repair or renewal by first shifting the rod endwise until it becomes disengaged from one strain-block, then lowering the disengaged end,and then shifting the rod endwise until the other end becomes disengaged-work.

easily performed" by one man.

In ordinary car-floor-frame construction the 'truss system fails to hold up the middle of the car satisfactorily, even' with veryheav'y tim- I bers. Myimproved construction yields satisfactory resistance to deflection with comparatively light timbers, and with equivalent timbers permits the car-loads to be largely increased.

The term timbers may be taken as meaning either the wooden timbers usually employed or their metal substitutes sometimes employed I I claim as my invention 1. In a car-floor framing, the combination, substantially as set forth, with the sills, intermediate floor-timbers, end sills, body-bolsters, and cross-frame tie-timbers, of strain-blocks disposed over the body-bolsters and secured to the sills and intermediate floor-timbers, end rods engaging the strain-blocks and end sills,

engaging the strain-blocks.

2. In a car-floor frame, the combination,

substantially as set forth, with the sills, intermediate floor-timbers, en'd sills, body-bolsters, cross-frame tie-timbers, end rods,J, and body truss-rods K, of strain-blocks F,provided with holes G and with flanges H.

Witnesses: JOSEPH PLATTENBURG.

GILBERT F.,MYER, F. W. "BURLINGAME.

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