US643315A - Draw-bar-supporting mechanism. - Google Patents

Description

N 3 Patented Feb. l3, I900.

J. A. YERK.

DRAW BAR SUPPORTING MECHANISM.

(Application filed Aug. 8, 1599.) (No Model.) 3 Sheets-Sheat l.

mwwmw am THE NORRIS PETERS ca. PNOTO-LITHQ. WASHINGTON. n. c.

No. 643,3!5. Patentedfeb. 13, I900. J. A. YERK.

DRAW BAR SUPPORTING MECHANISM. (Applicatioxi filed Aug. a, 1899. (No Model.) 3 Sheets-Sheet 2.

THE scams PEYERS ca, PHOTO-LITHCL, WAsHlNGTON, DV 0 Nu. 643,3I5. Patented Fab. I3, I900.

J. A. YERK.

DRAW BAR SUPPORTING MECHANlSM.

(Application filed Aug. 8 1599.) (No Model.) 3 Sheets-Sheet 3.

ma NORRIS PETRS CO.. PHOTO-L|YHO., wAsmNnToN, n. c

A Mr TATES JOHN A. YERK, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE IULLMANS PALACE CAR COMPANY, OF SAME PLACE.

DRAW-BAR-SUPPORTING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 643,315, dated February 13, 1900.

Application filed August 8,1 8 9 9.

T0 to whom it may concern.-

Be it known that I, J OHN A. YERK, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Draw-Bar-Supportin g Mech-' anism, of which the following is a specification.

This invention relates to draw-bar-supporting mechanism, and has for its object to provide a construction whereby the wear upon the draw-bar arising from its lateral'motion upon its support when in use maybe reduced, while at the same time the draw-bar will be yieldingly held in its normal position and returned to that position after lateral displace ment.

To this and other ends my invention consists in certain novel features which I will now proceed to describe and will then particularly point out in the claims.

In the accompanying drawings, Figure 1 is a front elevation, partlyin section, of a drawbar, carry-iron, and saddle embodying my invention. Fig. 2 is a plan view of the same.

Fig. 3 is a central vertical section through the structure shown in Figs. 1 and 2, the draw-bar being shown in place. Fig. 4B is a front elevation of a modified form of my invention, illustrating one mode of attaching the device to a car-body. Fig. 5 isa side elevation of the same. Fig. 6 is a view similar to Fig. 4:, illustrating a modified form of the saddle shown in Fig. 4, and also illustrating the adjustment of the saddle. Fig. 7 is a detail elevation of the saddle shown in Fig. 4 detached. Fig. 8 is a front elevation of the. springuide detached; Fig. 9, a plan view of the same, and Fig. 10 a plan view of the key detached.

In draft-gear as ordinarily constructed the draw-bar is free to move laterally to a limited extent atits outer end and is supported so as to permit this movement by means of a carryiron or stirrup, upon which it directly rests. The friction between the carry-iron and drawbar results in wear which tends to weaken and destroy the parts, and thereby requires frequent renewal of the draw-bar at consid erable expense. My invention has in view more particularly the obviating of these disadvantages, and in carrying out my inven- $eria1N0. 726,519. (No model.)

tion I em ploy, in conjunction with a carry-iron or stirrup, a spring-controlled saddle or yoke mounted and traveling on said carry-iron and provided with the horizontal supporting portions 2, by means of which it is suitably connected to the draft-timbers or other portion of the car-body, the vertical portions 3, and the horizontal bearing portion at. Upon this carry-iron is mounted to slide longitudinally thereof a saddle or yoke 5, comprising a baseplate 6, on which the draw-bar may rest and which in turn rests upon the carry-iron, said saddle being provided with a vertical flange 7 at each end, and said flanges and base-plate 6 forming a seat which receives and holds the draw-bar. The vertical flanges 7 are preferably rounded on their inner faces, as shown, to permit the angular relation of the draw-bar relatively thereto to change without causing binding between the parts. The saddle 5 is provided with downwardly-extending flanges 8, located on each side of the horizontal bearing portion 4 of the carry-iron and preventing lateral displacement of the saddle and carry-iron relatively to each other. Such lateral displacement is still further prevented by the provision of vertical flanges 9, arranged parallel to each other and at right angles to the vertical flanges 7 and adapted to receive between them the vertical portions 3 of the carry-iron when the saddle is moved laterally. It Willbe understood, of course, that the bedplate 6, and consequently the distance between the vertical flanges 7, is smaller than the distance between the vertical parts 3 of thecarry-iron, so as to permit lateral movement of the saddle relatively to the car-body,

or, in other words, longitudinal movement of the saddle relatively to the carry-iron.

In order to hold the saddle and draw-bar normallyin proper position, I em ploya spring or springs acting on the saddle for this purpose and tending to restore the saddle to its normal position when displaced. In the construction shown in Figs. 1, 2, and 3 I employ for this purpose a single spring 10, although a plurality of springs may be employed, as will hereinafter appear. To support this spring, I provide on the under side of the carry-iron 1 a stirrup 11, having vertical arms 12, (shown in dotted lines in Fig. 1,) provided with on twardly-bent extremities 13, by which the stirrup is secured to the under side of the carry-iron, the vertical arms being connected bya cross-bar 14. A guide pin or bolt 15 extends longitudinally through the stirrup,passin g through the vertical end pieces 12 thereof, and the spring 10 is coiled around this guidepin. At each end of the guide-pin there is mounted thereon a thrust-plate 16, having an aperture, through which the guide-pin passes, and a boss 17, which extends into and centers and supportsthe adjacent end of the spring 10. These thrust-plates are guided between the cross-bar 4 of the carry-iron and the corresponding cross-bar 14 of the stirrup and extend laterally beyond the same, as indicated in Fig. 3, the saddle being provided with shoulders 18, against which the edges of the thrust-plates bear. To this end the lateral flanges 6 of the saddle are extended downward, so as to inclose the thrust-plates and their operating-spring and supporting devices, these extensions being indicated by the numeral 19, so that all these parts of the mechanism are covered and protected.

In practice the draw-bar, which is indicated at 20 in Fig. 3, is placed in the seat formed between the bed-plate 6 and the vertical flanges 7, and when any lateral strain is placed upon the draw-bar, so as to move the same, the saddle will move along with the draw-bar, which will bear against one or the other of the vertical flanges 7. Thus all wear which occurs will be between the bed-plates 6 and the carry-iron, and the draw-bar will be protected from such wear. When the saddle is spring-controlled, as in the construction shown and described, the saddle and the draw-bar carried by it will be automatically returned to their normal position after displacement in an obvious manner.

In the construction just described the saddle is adapted for use in connection with a draw-bar of which the neck or thatportion which lies within the saddle is normally central relatively to the other parts of the device. It is frequently the case, however, that drawbars are employed where this portion lies either on one side or the other of the central line of the device, and it is also sometimes de-.

drawings I have shown a construction which is adapted to receive any one of these types of draw-bars and to be adjusted so as to properly support and guide eitheracentral drawbar or one the neck of whichlies either to'the right or to the left of the central line. In this construction the carry-iron is substantiallyi'dentical with that already described, except that it is of greater length. The saddle is also of a construction similar to that shown in Figs. 1, 2, and 3; but there is provided in its lower portion a series of transverse apertures 21, extending through the depending flanges 6 19. In Figs. 4 and 7 three such apertures are shown, while in Fig. 6 two are shown. Instead of employing a single spring 10 I employ two similar springs 22, and I provide upon the guide-pin 15 a sliding sleeve 23, having a centering-block 24, against which the inner ends of the springs 22 bear. The centering-block 24 has an aperture or keyway 25, and the saddle 5 may be so moved that any one of its apertures 21 may be caused to register with the aperture 25 of the centering-block,'whereupon the centering-block and saddle may be united by means of a key 26, passing through the registering apertures of both parts. The centering-block being normally held in a central position by means of the springs 22, it is obvious that the saddle may be so set relatively to the centering-block that its seat may be either central, as indicated in Fig. 4, or may lie upon one side or other of the center, as indicated in full and dotted lines in Fig. 6, so that the particular form shown in Figs. 4 and 5 may be so adj usted as to receive any one of the three types of draw-bars mentioned, while that shown in Fig. 6 may be adjusted to receive a draw-bar lying on either one side or the other of the central line.

I do not wish to be understood as limiting my self strictly to the precise details of construction hereinbefore described, and shown in the drawings, as it is obvious that these details may be modified without departing from the principle of my invention.

I claim- 1. The combination, with a laterally-movable draw-bar and a carry-iron, of a saddle interposed between the draw-bar and carry iron, longitudinally movable on the latter and adapted to engage and move with the drawbar to prevent wear of the draw-bar on the carry-iron, substantially as described.

2. The combination, with a laterally-movable draw-bar and a carry-iron, of a movable saddle on which the draw-bar rests, said saddle being adapted to slide on and be guided by the carry-iron and being provided with a seat to receive and engage the draw-bar, whereby said saddle moves with the drawbar and prevents wear between it and the carry-iron, substantially as described.

3. The combination, witha laterally-movable draw-bar and a carry-iron, of a saddle longitudinally movable on the carry iron, comprising a bed-plate, downwardly-extending flanges between which the carry-iron fits, and upwardly extending flanges between which the draw-bar fits, whereby the saddle moves with the draw-bar between it and the ITO carry-iron and prevents Wear of the draw-bar, substantially as described.

4. The combination, with a laterally-movable draw-bar and a carry-iron, of a springcontrolled saddle interposed between the draw-bar and the carry-iron and adapted to slide longitudinally with the carry-iron and to engage and move with the draw-bar, Whereby the draw-bar is held in and returned to its normal position and wear of the draw-bar centering-block with which the saddle may be adjustably connected to vary its normal position relatively to the central line of the device, and springs for holding the centeringblock normally in a central position and for returning the same to said position when displaced, substantially as described.

7. The combination, with a carry-iron having a depending stirrup, a guide-pin, a contering-block movable thereon, and springs for normally centering said block, said block being provided with a keyway or aperture, of a saddle longitudinally movable on the carryiron, adapted to engage the draw-bar, and provided with a plurality of transverse apertures, and a key passing through the apertures of the saddle and centering-block to adjustably connect the same, substantially as described.

JOHN A. YERK.

Witnesses:

FREDERICK C. GOODWIN, ADA H. BARNES.

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