US1483014A - Pressure draft gear - Google Patents

Description

. H. J. SCHAEFER PREsURE DRAFT GEAR NNN 3 Sheets-Sheet l Filed Dec.. 1. 19:20`

. H. J. SCHAEFER Feb. 5 9

i PRESSURE DRAFT GEAR 3 Sheets-Sheet 2 Filed l Feb. 5 1924.

H. J. SCHAEFER PRESSURE DRAFT GEAR Filed Dec. 1 1920 5 Sheets-Sheet 5 Patented Feb. 5, 1924.

- HENRY J'. SCHAEFR, 0F ASHTABU'LA, OHIO.

PRESSURE DRAFT GEAR.

Application :tiled December l, 1920. `Serial No. 427,529.

To all whom t may concern:

Be it known that I, HENRY J. SCHAEFER, a citizen of the United States, residing at Ashtabula, in the 'county of Ashtabula and State of Ohio, have invented certain new and useful Improvements in a Pressure Draft Gear, of"which the following is a specification. s

This invention relates to compression draft gear for railroad cars.

The 4object of the invention is to provide a mechanism whereby the pull of a railroad car 'is proportionately distributed throughout the car and the entire pull being borne by the draw bar prevented.

Another object is to provide a simply con- ,structed and efficient mechanism of this character which may be made to fit any sized car. 4

1With these and other objects in view, the invention consists in certain novel features of construction as hereinafter shown and described. and specifically pointed out in the claims.

1n the accompanying drawings:

Figure y1 represents a top plan view partly "in section of the apparatus shown applied;'

Fig; 2 is an enlarged transverse section taken on the line 2-2 of Fig. 1;

Fig. 3 is an enlarged detail side elevation of one of the'friction plates employed in the apparatus; 1

n Fig. 4 is a detail sectional view, showing the connection of draft bar with the gear;

Fig. is aside elevation of one of theV compression plates taken from the outside; Fig. 6 is a side. elevation of one of draft kevS; J

ig. 7. isa similar view of one ofthe spacers;

Fig. 8 is a detail end elevation showing the draft bar supporting hanger;

Fig. 9 is a detail sectional view taken on line 9-9 of Fig. 8. v

Fig. 10 is a horizontal section of the center block, taken yon the line 10-10 of Fig. 11; andv able steel and provided at its opposite ends' with coupler butt Shanks 2 for connection Fig. 11 is a side elevation of said block.

lhe gear constituting'this invention comprises a center block- 1 constructed of mallewith draw bars D. This block 1 has ra centrally disposed oblong aperture 4 extending therethrough the end walls of which 'pir converge toward the middle of the block meeting at a point about midway the thickness thereof (see, Fig. 10). This block 1 also is provided with a plurality of apertures 3 one arranged at each corner thereof and adapted to receive draw pins 19 which are preferably constructed of forged steel. The oblong opening 4 in the block 1 has the ends 6 thereof rounded (see Fig. 11) to prevent shearing of the draft compression rods 2O which are designed to be mounted therein and whichwill be hereinafter more fully described. V n k 'lwo forged steel draft plates 7 are designed toifit between the center block 1 and the steel underframe 'F of the car. These plates are each provided with four draw pin apertures 8 and with a centrally disposed oblong opening 9 which is beveled at each end and at each side to prevent shearing of the compression rods 20 since these plates are designed to be reversible. A draft :key opening 10 is located at each end of the plate 7 in which openings draft keys 26 arc f designed to be mounted. These keys'26 are preferably constructed of forged steel plates and are designed to pass through compression plates 11 one arranged outside each of the .frame members F and riveted thereto.

and through the car underframe F, the

ture 29. Two malleable iron spacing plates as 30 fit on thenotched. ends of the draft keys 26 and each is provided with a projection 32 to lit in the notchv 28 of its respective draft key 26, Cotter pins being preferably passed through the draft key opening 29 to hold the parts assembled.

The two malleable steel compression plates 11 which are mounted outside the angle ironframe members F on the compression rods 20 are provided each with two spring seats 12 which are inclined in opposite directions preferably at a pitch of about'80 degrees and each has a Bange 13 arranged thereon to prevent the spring seated thereon from sliplaterally. These seats 12 each has an obhquely disposed aperture 14 extending therethrough throughwhich the rods 20 are designed to pass, said rods extending at opposite ends beyond the seats and having mounted thereon coiled compression spring; 24 held in position by nuts 22 provided at their inner ends with integral washers 22. said nutsbeing screwed on the outer ends ot' the rods 20' which are threaded for this purpose, the nuts having cotter pin apertures 23 therein .for locking them to the rods.

The plates 11 are each provided at opposite ends with longitudinally extending elongated openings 15 through which the draft keys 26 pass which openings are surrounded on the outer faces of the plates by flanges 15. These plates 11 are secured to the car underfranie F by a pluralityr of rivets and bolts. the heads of the rivets and bolts being flush with the inner faces of the members F to provide for clearance of the friction plates 7.

Two of the draft compression rods 20 are employed being preferably constructed of wrought iron and bent midway their ends at an angle of about 160 These rods pass through the oblong opening 4 in the center block 1 through the oblong openings 9 in the draft plates 7, openings in the frame members F, and the openings 14 in the compression plates 11 as hereinbefore described. As above stated these rods 20 are provided at their opposite ends with the draft springs 24 which are employed for compressing and absorbing shocks and distributing the pull.

From the above description it will be obvious that in the mechanism herein shown and described and which is mounted beneath. the car adjacent and between the inner ends of the draw bars, so that on a pull the draft plate 7 will compress the springs 24. The

compression of the springs 24 is controlled bv the length of the slots or openings 15 in the plates, 11.

vThe draw bars D have their coupler head carrying ends supported in hangers 40 depending from the end members of the car frame. while their innerends have transverse apertures for passage of the draft keys 26 and are socketed to receive the coupler butt studs 2 on center block 1 being connected thereto by pins 35. As shown these hangers 40 are U-shaped and the legs 41 thereof are mounted in a head block 42 being secured thereto by a pin 43. The blocks 42 each has ,apertured lugs 44 extending rearwardly therefrom and passing through the car frame end members and secured by headed pins 45.

The assembling of the apparatus on the underframing F of the car is obvious from an inspection of Figs. 1 and 2. and it isA described as follows:

The plates 11 are first bolted or riveted to the outer faces of the two members F with theI openings 14v and'15 in said plates registering Awith corresponding openings (see Fip. 1) in said members F. The block through the openings 15'v in one plate 11, v

through the adjacent members F through openings 10 in plates, through the inner ends of the draw bars, then through the openings 10 in the other plate 7, througlh the other member F, openings 15 in t e otherfplate 1'1 and has mounted on said projecting ends the spacing plates 30 and are secured by cot-ter pins passed through the openings 32 in plates 30 and those' 29 in the keys.

One of the rods 2O with one spring 24 thereon is then passed through one of the apertures 14 in one of the outer fixed plates 11 through the corresponding opening in the adjacent frame memberF, then through the opening 9 in the adjacent inner sliding plate 7, through the opening'4 in block l,

then through the opening 9 in the other slidy ing plate 7 through frame F, through one of the openings 14 in the other outer fixed plate 11. The other spring 24 is then placed on said rod 20 and the nut 22 applied, it being of course understood that the inner ends of the springs 24 are positioned in the seats 2 on each end ofthe blofzk and there arev four two-inch holes for draw pins 3 located at each corner of the block. The block has an oblong hole 4 which may be three by eleven inches reduced at the middle to three by' nine inches.

The corners of theob'long holel are made round to prevent shearing of the draft compressionrods 20 at the bend where they pass throughthe center of the block, as shown at 6; Figs. 10 and 11.

As shown' in Fig. 3, there are two forged steel draft plates to t between the center block and steel' under frame of the car. Four draw-pin holes 8 are located two inches from the top and bottom of each plate and thirteen and three-fourths inches apart. These plates, shown in Fig. 3, are lifted. up until the holes 8 match the holes in the draw sills and until the slots 10 in the showing the holes 1l in Fig. 5 should match the cen- `tei-'block hole in the draft plate 7 of Fig. 3

and the center block hole 4 in Fig. l1.

The rods 2U are threaded four or five inches from the ends and each there has a slotted key way 23, as before described, to receive a Cotter pin to prevent the nuts from backingotf. After one rod 2() is applied then the other rod 20 is applied in the same manner, sufficientI clearance being provided for the purpose, see Fig. l.

After the rods 20 are applied the springs 24, washers 22a and nuts 22 are applied to all four ends of the rods 20 and partially drawn up, to be subsequently drawn up to a greater extent.

In practice the draft gear has a little more than three and seven eighths inches of spring Amotion (one and seven eighths inches each way). v

To disassemble the device, the operation describedA is reversed. a lifting jack being used to relieve the weight until the rods 20 are released.

What is claimed is:

1. In an apparatus of the class described, the combination with a draw bar; of pull distributing means, and a connection between said means and bar whereby a pull on the bar will be. distributed throughout the car.

2. In an apparatus of the class described, the combination with a draw bar; of pull distributing means connected therewith and comprising a longitudinally movable member` 'a connection between said member and bar, means compressible in a plane at rightangles to the movement of said bar and operable through said member by a pull on said bar.

3. In an apparatus of the class described, the combination with a draw bar; of pull distributing means connected therewith and comprising a longitudinally movable member. a connection between said member and bar, compression springs arranged on opposite sides of said member and compressible in a plane at right angles to the movement of said bar and operable through said member by a pull on said barmand means carried 'by sald member and connected to actuate said springs on the'exertion of a pull on said bar.

4. In an apparatus .of the class described, the combination with laterally spaced frame members, and a draw bar mounted to move between them; of a' block mounted to move between said frame members, a connection bet-Ween said block and bar, said block having an elongated aperture extending transversely therethrough, compression plates located outside and fixed to said frame members and each having an aperture registering with the aperture in said block and an inclined spring seat on the outer face of each,

-.block, a rod extendin;

draft plates carried by said block between it and said frame members and movable therewith and each having anaperture to register with those in the block and compression plates, an acute angled rod extended through the registering apertures insaid plates and block and projecting at opposite ends beyond said compression plates, and coiled springs mounted on said projecting rod ends in the seats of the compression plates whereby a pull on said draw bar will operate to compress said springs and distribute the pull.

5., In an apparatus of the class described,` the combination with laterally spaced frame members and a draw bar mounted to .move between them; of a block mounted to move between said frame members, said block having an elongated a erture extending transversely therethrougli, compression plates located outside and fixed to said frame members and each having an aperture registering with the aperture in said block and an inclined spring seat on the outer face of each, draft plates carried by said block between it and said frame members and movable therewith and having an aperture to register .with those in the block and compression plates, draft keys extending through said plates and draw bar, being movable in said compression plates and with said draft plates, an acute angled rod extended through the registering apertures in said plates and block and projecting at opposite ends beyond said compression plates, and coiled springs mounted on said projecting rod ends in the seats of the compression plates whereby a pull on said draw bar will operate to compress said springs and distribute the pull.

6. In an apparatus of the class described, the combination with laterally spaced frame members, and a draw bar mounted to move between them; of a block mounted to move between said frame members, a connection between said block and bar, said block having an elongated aperture. extending transversely therethrough, the end walls of which converge toward the center of the block and rounded, compression and draft plates car-- ried by said frame members, the former being fixed and the latter movable relatively thereto, said plates having apertures registering with each other and with that in the through said regisering apertures, coile spr-ings onsaid rod ends, and abutments on said ends between which and said compression plates the coiled springs are. located.

7. .In an apparatus of the class described, the combination with laterally spaced frame members, and draw, bars mounted to move between them of a block mounted to move -between said yframe members, a connection between said block and bars, said block hav'- ing an elongated aperture extending transversely therethrough. the end Walls of which converge toward the center of the block and rounded. eompreion and draft plates earried hy said frame members. the former being fixed and 'the latter movable relatively thereto,` said plates haring apertures regis-l tering with each other and with that n the block, acute angled rods extending through ythe registering apertures in said plates and blocks, and projecting at oppositeends bei 10 yond the compression plates with nuts on the terminals thereof, and coiled springs on said rod endsbetween said nuts and compression plates.

In testimony whereof, I ailx my signature 15 hereto.

HENRY J. SCHAEFER.

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