US743558A - Lateral-motion arch-bar truck. - Google Patents

Description

PATENTED NOV. 10, 190a 0; H. READ.

LATERAL MOTION ARCH BAR TRUCK.

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PATENTED NOV. 10, 1903;

G. H. READ.

APPLICATION FILED APR. 9. 1903.

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Patented November 10, 1903.

CHARLES H. READ, OF PITTSBURG, PENNSYLVANIA.

LATERAL-MOTION ARCH-BAR TRUCK.

SPECIFICATION forming partof Letters Patent No. 743,558, dated November 10, 1903. Application filed April 9, 1903. Serial No. 151,846. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES H. READ, of Pittsburg, Allegheny county, Pennsylvania, have invented a new and useful Lateral-Motion Arch-Bar Truck, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a side elevatiompartly in section, showing the-arrangement of the j ournalbox and arch-bars. Fig. 2 is a front elevation of the box, partly broken away. Fig. 3 is a top plan view, and Figs. 4, 5, and 6 are detail views hereinafter referred to.

.My invention relates to that class of archbar trucks for railway-cars wherein provision is made for lateral motion of the truck ,by means of rollers resting on the journal-box; and the object ofthe invention is to provide a simple and effective construction of this character which may be applied to the existing arch-bar trucks without affecting the interchanging of parts or the standards of the Master Oar-Builders Association.

To that end it consists in placing the rollers at the side of the arch-bars, in providing a carriage resting on the side rollers and to which the arch-bars are rigidly secured, and, further, in the construction and arrangement of the parts, as hereinafter more fully described and claimed.

In the drawings, 2 represents the journalbox, which may be of ordinary form except that vertically-extendin g recesses 3 3 are preferably provided in the outer faces of its sides to receive the bolts 4 4, of which there is one at each side. The bolts 4 are preferably of cylindrical form and are provided with integral collars 5 5 below the lower arch-bar 6 and above the tie-bar 7. These collars are preferably flattened on their inner faces, as shown at 8 in Fig. 4, these flat faces being shown as spaced slightly apart from the faces of the recessed portions 3,.though they may be in contact. Above the upper collar 5 each bolt is preferably reduced in diameter in the portion 9, which extends through registering holes in the side wing 10 of the carriage 11 and in the upper arch-bar 12 and the lower arch-bar 6 The upper and lower ends of these bolts are screw-threaded to receive nu ts 13 and locking-nuts 14.

The top of the journal-box is provided with a pair of transverse grooves 15,which are preferably concave or deepest at the central transverse plane, at which point the rollers 16 normally rest. The carriage 11 is provided on its lower side with grooves 17, similar to those on the journal-box and at the sides of the arch-bars.

I have shown the arch-bars as seated in up per and lower registering transverse recesses in the carriage, and in addition to the bolts 4 the arch-bars and carriage are secured together by steeple-head bolts 18, having their lower heads countersunk within the lower arch-bar, while their upper ends are provided with nuts 19. One of these bolts 18 is shown in Fig. 6.

As the inner roller-groove on the journalbox extends over the well 20 for the dustguard, I preferably form this well with. a closed top, the guard being turned upside down and inserted upwardly through the open bottom of the well. The well is then closed at the bottom by a bolt 21, which prevents the dust-guard from dropping downwardly. The groove may not extend over the well in some cases; but in most cases the carriage would project over the well, so that in some positions of the carriage the guard could not be withdrawn upwardly.

It will be notedthat the collars on-the bolts 4 are so spaced that the upper face of the tiebar is about one-eighth of an inch below the lower face of the journal-box when in normal position, and at-the end of the side movement the lift caused by the rollers and the curved grooves will bring the tie-bar into contact with the lower face of the box, at which time the collars or enlarged parts of the bolts 4 will be at the ends of the side recesses in the box.

The central wing portions 10 of the carriage extend sidewise in opposite directions between the two arch-bars, as shown in Fig. 2, and act as spacing-plates for them.

In operation the parts normally rest in the position shown in Figs. 1 and 2 of the drawings, and when a side motion of the truck occurs this side motion will be converted into a vertical motion of the truck through the lifting action of the rollers in the curved grooves. The side blow will thus be taken off from the wheel-flanges, thus preventing rapid wear of the flanges and rails and breaking of the flanges. The inclined groove will return the parts to their normal position when relieved from the side pressure. The amount of side motion is limited by the rising of the tie-bar against the journal-box and by the side bolts contacting with the end walls of the box recesses, also by the stops for the rollers and the bottom projecting stops for the tie-bar.

The advantages of my invention result largely from the placing of the rollers outside of the arch-bars. This allows the archbars to be placed at the required level, according to the Master Gar-Builders st-and-. ards, and permits the device to be applied to existing arch-bar trucks. The construction is very simple, requiring only one casting, two rollers, and two bolts over the ordinary construction. The presentinterchangeability of parts according to Master Oar-B uilders requirements is retained, and repairs may be easily made in case of wreck or when the car is in the hands of other roads by taking out the side-motion device and replacing it with the standard box equipment. In case of Y breakage or failure of'the side-motion device from any cause the arch-bars will merely sink about a quarter of an inch and will rest on top of the box without resulting injury. A strong construction is afforded by reason of the rigid connection between the arch-bars and the carriage, the carriage acting also as a spacing-block between the arch-bars in the form shown, while the two additional bolts passing through the arch-bars and carriage serve to meet the shearing strain of the archbars, which is very great and which the two side bolts are often unable to resist. The fiat inner face on the side-bolt collars allows for inaccuracy in casting, while at the same time giving a Hat face to abut against the fiat side face of the box in buffing. These collars strike the box near its top and bottom, where the box is strongest and best able to withstand the blows. The construction may be used in pedestal-trucks, the rollers in this case being at the sides of the side frame member of the truck, thus allowing the pedestaltop to be brought down to the required distance above the rail. The side bolts may be cylindrical throughout and extend through spacing-sleeves.

Both arch-bars may be placed under the carriage or both secured on top of the carriage. The carriage may be made without recesses and may be changed as to shape and dimensions, and many other variations may be made in the form and arrangement of the carried on the journal-box, and spacing-bolts at the sides of the box, said bolts holding apart the lower tie-bar and the arch-bar; substantially as described.

5. An arch-bar truck havinga member secured to the arch-bars and 'projecting laterally on opposite sides thereof, and rollers at the sides of the arch bar resting within grooves in said member and journal-box top; substantially as described. 7

6. An arch-bar truck having an.end carriage with recesses to receive the ends of the arch-bars, and rollers at the sides of the archbars and upon which the carriage rests; substantially as described.

7. An arch-bar truck having its arch-bars supported on rollers, and spacing-bolts connecting and holding apart the lower tie-bar and an arch-bar at each side of the box; substantially as described.

8. An arch-bar truck having a carriage to which the arch-bar end portions are rigidly secured, and rollers on which the carriage secured to the arch-bars by through connections, said-connections having countersunk lower heads within the lower arch-bars; substantially as described.

12. A car-truck having its arch-bars supported upon rollers, and a spacing-bolt between the lower arch-bar and the tie-bar, said bolt being arranged to space the tie-bar apart from the bottom of the journal-box; substantially as described.

13. An arch-bar truck having a carriage rigidly secured to the end portions of the arch-bar, spacing-bolts between the lower arch-bars and the tie-bar, and having extensions securing the arch-bars together, rollers between the side portions of the carriage and the journal-box, and countersunk bolts extending through the carriage and the archbars; substantially as described.

14. An arch-bar truck having supporting-

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