US515044A - Draw-bar mechanism - Google Patents

Description

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P. BROWN. DRAW BAR MECHANISM.

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v DRAW BAR MECHANISM. No. 5151044. Patented Feb 20, 1894-.

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DRAW BAR MECHANISM. No. 515,044. Patented Feb. 20, 1894.

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PERRY BROWN, OE SHARONVILLE, OHIO.

DRAW-BAR MECHANISM.

SPECIFICATION forming part of Letters Patent No. 515,044, dated February 20,1894. Application filed March 14, 1893. Serial No.465,953. (No model.)

To all whom it may concern.-

Be it known that I, PERRY BROWN, a citizen of the United States of America, residing at Sharonville, Hamilton county, Ohio, have invented certain new and useful Improvements in Draw-Bar Mechanism, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention is an improvement on that class of draft apparatus shown in my previous patent dated January 13, 1893, and is designed to so arrange the parts that the draft will always tend to draw the frame of the car together rather than draw it apart, which latter characterizes all of the draft mechanism.

with which I am acquainted.

In the following description, my invention will be fully explained and then definitely claimed at the end hereof.

In the accompanying drawings-Figure 1 is an inverted plan of a draft mechanism constructed according to my improvement. Fig. 2 is a Vertical longitudinal section of the left hand end of Fig. 1. Fig. 3 is a horizontal longitudinal section of the right hand end of Fig. 1. Fig. etis an inverted plan of a modification. Fig. 5 is avertical longitudinal section of one end of the same. Fig. 6 is a horizontal section of the same. Fig. 7 is a sectional detail on a larger scale. Fig. 8 is a perspective view of a bolster. Fig. 9 is a similar View of the draft irons used in that form of my invention shown in Figs. 1, 2 and 3. Fig. 10 is a similar view of the follower blocks used in the modification shown in Figs. 1, 4:, 5 and 6. Fig. 11 is a similar view of the draft irons used in the modification shown in Figs. 4, 5 and 6. Fig. 12 and 13 are similar views of the follower blocks used inthat form of my invention shown in Figs. 1, 2 and 3. Fig. 14 is a similar View of a bolster plate.

Referring now to the details of the drawings and particularly. to Figs. 1, 2 and 3, by letter-A represents the longitudinal sills and B the end sills of the frame-work of the car, to which are secured the draft irons (J having recesses c in which work the follower blocks D having recesses d in which are set the buffer-springs E. Over and under these followers is set a yoke F whose ends are provided with projections f fitting in corresponding recesses g in the draw-bar G which may be of any convenient form, and the yoke and draw-bar are secured together by a bolt H. Through the follower blocks are passed the draw-rods I which are flattened out and perforated at the ends to receive keys i, as shown.

Above the draft irons and between them and the sill is set a bar J, Whose ends are turned down to prevent the draft irons from spreading, and in front of the sill is a plate K against which projections c on the draft irons bear.

Underneath the inner ends of the draft irons and attached to them and the sills are set longitudinal straps L bolted to the irons and sills, and underneath these is set a cross-bar M whose ends m are turned upward to pre-' vent the inner ends of the draft irons from spreading. At the outer end of the draft irons is another cross-bar M whose outer ends are turned upward and bolted to the sill at m.

The inner ends of the draw-irons shown on the left hand end of Fig. 1 are recessed to receive a spring-plunger N (shown better in -Fig. 7) behind which is a disk of rubber O, a metal plate P and a spring Q, the Whole form-' ing an additional spring which comes in play only when the spring E has been compressed. The draft irons at the other end of Fig. 1 do not have the device described in thelast paragraph, but the follower blocks come into contact with a shoulder c on the draft irons.

' At the rear of the draft irons are set liner blocks R against which is set the bolster S preferably formed of channel iron in which are set hangers s for the anti-friction rollers s, which hangers are pieferably madeof heavy iron plate bent to the required forni and secured in any convenient manner to the bolster.

- At T is shown the bolster plate, (a perspective view of which is also shown by Fig. 14)

provided with bearing pieces 25 rising upward into the channel of the bolster to strengthen and support the same under the strain to which both the bolster and bolster plate are subjected. At the back of'the bolster are stay blocks U, each having a tee a projecting hetween the bolster and the sill.

. In that form of my invention shown in Figs. at, 5 and 6, the draft irons are of different form, and the follower blocks extend through ICC ' struction, in which it will be seen that they R them and receive the draw rods on the outside of the draft irons, instead of inside as in Figs. 1, 2 and 3. In this case the straps L are extended farther forward under the draft irons and over the cross-bar M, as shown.

In Figs. 12 and 13 are shown perspective views of the follower blocks on a larger scale so as to more clearly show their form and conare not only cast with openings d to receive the draftrods but have recesses 01 above and below said openings, which not only make them much lighter, but also strengthens them, as it is known'that the strength of the metal is in the outer skin. These castings are nearly all skin. The inner follower block necessarily has a round bearing for the curved part of the yoke, and to lighten and strengthen this, I make said bearing to consist of three ribs d connected by a cross rib d and both of the follower blocks haverecesses d to receive the yoke, and besides this, the follower blocks used in the modified form of my invention have recesses d to receive the straps of the draw irons.

When I use the draft iron shown at the right hand end of Fig. 1, I form recesses in the rear of the shoulder c and a notch c to allow of the play of the draft rods through it. The front ends of all of them are provided with sockets c to receive the spring plungers c With either form of the construction above set forth, it will be seen that all the strain is transmitted to whichever of the follower blocks happens to be in the rear, and thus as the front draw-irons have no limiting effect on the front follower blocks, the entire strain comes on the rear draw-irons and therefore the usual strain on the platform is avoided, and there is a tendency to draw the frame of the car together rather than pull the platform away from the frame, as is commonly the case with the draft mechanism in ordi nary use.

Having thus shown some different ways of carrying out my invention, I here state that I do not limit myself to the exact ways shown, as others may be adopted without the exercise of invention.

I am aware of the expired Reissue Patent No. 8,095 and make no claim to anything shown therein as I-consider my construction and arrangement of parts as differing essentially from the devices shown in said patent.

What I claim as new is-- 1. In a draw-bar mechanism, the combination with two draw-bars, corresponding follower blocks and connections between said blocks of two sets of draw-irons constructed with recesses to receive the ends of the follower blocks and allow of their free motion toward the ends of the cars, substantially as described.

2. In a draw-bar mechanism, the combination with two draw-bars, corresponding follower blocks, and connections between said blocks of twosets of draw-irons, having receptacles for the ends of the follower blocks formed therein, and the'end walls of said receptacles forming stops to limit the motion of said blocks toward the center of the car, and constructed to allow free motion toward the end of said car, substantially as described.

3. In a draw-bar mechanism, the combination with two draw-bars, corresponding sets of follower blocks, springs acting betweensaid follower blocks, and connections between said follower blocks of two sets of draw-irons having receptacles for the ends of the follower blocks formed therein, and the end walls of said receptacles forming stops to limit the motion of said blocks toward the center of the car and constructed to allow free motion of the blocks toward the end of the car, substantially as described. A

4.. In a draw-bar mechanisnnthe combination with two draw-bars, corresponding follower blocks, and connections between said blocks of draw-irons provided with supplementary springs arranged between the inner blocks and the rear of the draw-irons, and acting against said inner follower blocks as they move toward the center of the car, substantially as described.

5. In a draw-bar mechanism, the combination with two draw-bars, corresponding sets of follower blocks, springs acting between each set, and connections between said follower blocks, of two sets of draw-irons constructed to allow free motion of said follower blocks toward the end of the car, and supplev mentary springs arranged between the inner follower blocks and the inner ends of the drawirons and acting against said inner follower blocks as they move toward the center of the car, substantially as described.

6. In a draw-bar mechanism, the combination with two draw-bars, corresponding follower blocks, and connections between said follower blocks, of draw-irons having springs set in recesses therein and arranged to act against the inner follower block as it moves toward the center of the car, substantially as described. I

7. In a draw-bar mechanism, the combination of two draw-bars, recessed follower blocks for the same, springs between said follower blocks substantially fitting the recesses in said blocks, and connections between said follower blocks constructed and arranged to bring the draft upon the rear draw-bar, substantially as described.

8. In a draw-bar mechanism, the combination of a draw-bar, a pair of recessed follower blocks, a spring between'said blocks substantially fitting the recesses in said blocks, with a pair of draw -irons having recesses con structed to allow of free motion of the follower blocks toward the outer end, and having a stop to limit the motion in the opposite direction, substantially as described.

9. The combination of recessed draw-irons,

recessed follower blocks having their ends in the recesses in the draw irons, a spring set in and substantially fitting the recesses in the follower blocks, a draw bar, a yoke connecting said draw-bar and follower block, and

draw-rods I passing through the follower blocks between the draft irons and spring, all substantially as described and shown.

11. In a draft mechanism,-a follower block D provided with the ribs d (1 substantially as described.

12. In a draft mechanism, a follower block D having ribs d 01 apertures d to receive the draft rods and recesses (i above and below the same, substantially as described and shown and for the purpose specified.

13. A bolster iron formed of channel iron provided with anti-friction rollers 8, having their axes parallel with the length of the iron, and plates 5 set transversely of the iron and forming hangers for said rollers s, substantially as described.

14:. A bolster formed of channel iron provided with the bolster-plate T having bearing pieces 15 rising upward into the channel iron, substantially as described.

In testimony whereof I affix my signature, in presence of two witnesses, this 8th day of March, 1893.

PERRY BROWN.

Witnesses:

THOS. E. ROBERTSON, DAVID E. MOORE.

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