US1760181A - Side frame - Google Patents

Description

' May 27, 1930. w, STERTZBACH ET AL 1,760,181

S IDE FRAME Filed Aug. 11, 1928 3 Shets-She'et 1 y 1930. H. w. STERTZBACH ET AL 1,760,181

S IDE FRAME Filed Aug 11, 1928 3 Sheets-Sheet .Z

Pateli tGa p 4 "UNITED STATES PATE T OFFICE WY w. smrznncn AND JOHN S.- I CPHEBSON, OI COLUIBU S, OHIO, ASSIGNOBB 1'0 m BUCKEYE STEEL CASTINGB COMPANY, 01 COLUMBUS, OHIO rams Application filed August 11, 1 928. Seilal No. 298,000k

' This invention relates to car trucks and has special. reference to the side frame and a supporting block adapted to fit over the compression member of the side frame and sustain the load under certain conditions.

A particular object of the invention is'to provide a side frame suitable for use on a traveling crane which may be required, when in working position, to lift loads that would make an unequal loading on the truck springs, causing the body of the crane to a tilt out of a level position. .To avoid such tilting it is necessary to relieve the springs of the load, and thisis 'done by transferring the load to the top of the frame, i. e., onto the compression member. To this end, arch bar trucks have heretofore been provided with a jack screw threaded into a heavy block supported on the top of the arch bar side frame, and it is obvious that by bringing the screw out into contact with the overlying structure, the truck springs will cease to function and any additional load on the frame due to the tipping tendency of a load lifted at the side or end of the crane will be transmitted to the top member of the -frame and be carried directly to the journals without passing through the springs. In applying such device to a cast steel frame, it

is found that frequently there is not suflicient clearance .over the frame proper to lay a solid block thigk enough to contain the requisite number of. screw threads, and the present invention provides means to use the available space to the best possible advanwith the supporting block in position thereon; h

Figure 2 1s a transverse vertical section on the line 2-2 of Fig. 1;

Figure 3 is a section on the line 3-3 of Fig. 2;

Figure 4 is a plan view of the central portion of the side frame with the block removed;

Figure 5 is a plan view of the block; I, Figure 6 is a side view of the block; .Figure 7 is an end view of the block;

Figure 8 is a detail section on the line 6-6 of Fig. 1.

The side frame includes a conventional'tension member 1 with spring seats 2-, and side columns 3 rising to a compression member 4, these parts defining a bolster opening in the usual manner. According to the present invention, the side flanges 5 of the compression member have fiat upper edges, as indicated at 6, and the central transverse bridging web 7 thereof extends inwardly and downwardly from the top of the member at the ends of the same to the bottom thereof near itscenter where a large opening 8 is formed through the web. Central longitudinal reenforcing ribs 9 are formed on top of the web 7 and similar ribs 10 are formed on the under side thereof.

The supporting block 11 is of proper contour and dimensions to rest squarely upon and extend over the entire top of the compression member 4 above and between the upper ends of the columns and is rigidly secured thereon by bolts or rivets inserted through openings 12 in theend portions of the block into holes 13 provided therefor in the transverse web'of the compression member. The block is also formed with side flanges 14 to depend at the sides of the compression member. At its center an opening 15 is ormed through the block and on its under side, concentricwith said opening, a hub 16 is formed to fit between the ends of the ribs 9 on the compression member 4', longitudinal reenforcing ribs 17 extending from the hub and tapering therefrom to merge into the under surface of the block and conform to the inclined portions of the web 7 at the sides of the ribs 9. The block is thus mounted on the side framein such man ner that load strains im osed thereon will be effectually sustainedan distributed.

When it is desired to relieve the springs and spring seats of the load, a large bolt or jack screw is fitted to the central opening 15, the bore of which is threaded, and brought into contact with the overlyin carstructure. The jack or bolt is then a justed until the entire load rests thereon it being understoodthat the arrangement is duplicated at the two sides of the truck. By providing separate blocks to support the jacks or sustaining bolts we are enabled to use 'a side frame of standard design'by merely changing the structure of' the block resting only on the edges 6 of the side frame compression member. By 'roviding the hub or boss 16 which projects into the top or compression member of the side frame we attain sufiicient depth of the block to contain the required threads and the clear.- ance beween the truck frame and the car body underframe is conserved for {the head of the screw. By slopin the transverse web of the compression member downward into alinement with the bottom edge of the member at its middle, we'obtain a very'favorable distribution' of metal for resisting the tensile stresses at this, point which are due to the screw load concentration. The depending flanges of the block and the rib extending from the central hub stiffen the block and cause a distribution of the load over the top of the frame, and the contact between the block and the top edges of the compression" member cause the block and frame to deflect under the concentrated screw load approximately in unison and mutual reenforcement between the block and the frame results, so that there is attained suflicient effective beam strength in the block and compression member combined to transmit the load concentration to the columns.

- Having fully described our invention what we claim as new and desire to secure by Letters Patent, is r 1. The combination of a side frame and a ribbed supporting block rigidly secured upon thetop of the side frame compression member, and having a substantially flat-upper surface-for sustaining downward loads.

2. The combination of a side frame having a flat top compression member, and a ribbed supporting block resting on and extending entirely over the flat top of the compression member and rigidly secured thereon.

3. The combination of a side frame, and a separate supporting block secured upon the top of the side frame compression-member, said block having side flanges depending at the sides of the side frame, and intermediate ribbing between the walls of the side frame compression member.

4. The combination of a side frame having a compression member the transverse web of which extends inwardly and downwardly from points over the side frame columns toa compression member the transverse web of which extends inwardly anad downwardly from points over the side framecolumns to- .ward the center ofthe member, lon itudinal reenforcing ribs on said web, and a lock secured upon and extending over said compression member and having a central hub dependin within the compression member and fitting etween said ribs.

6. The combination of a side frame having a compression member the transverse web of which extends inwardly and downwardly from points over the side frame columns to Ward the center of the member, longitudinal reenforcing ribs on said web terminatin short of the center of the same, and a bloc secured upon and extending over said compressionmember and having a central hub depending within the compression member and fitting between said ribs, the block being further provided with tapered reenforcing ribs projecting from the hub and at the sides of the ribs on the web.

7. The combination of a side frame having its compression member provided with an opening through its bottom at its center, and a supporting blockv resting on said compression member and having an internally threaded hub depending within the compression member in alinement with the opening through the bottom thereof.

8. The combination of a side frame having top member provided with longitudinally ex tending reenforcing ribs, and a supporting block resting on and extendingover the top member and provided with longitudinal reenforcing ribs alternating with the ribs on the top member.

9. The combination of a side frame having a top member provided with longitudinally extending reenforcing ribs, block resting on and extending over the top member and provided with longitudinal reenforcing ribs alternating with the ribs on the top member and also having side flanges depending at the sides of the top member.

10. The combination of a side frame, and a separate supporting block secured upon the top of the side frame compression member over the side frame columns, said block havmg side flanges depending at the sides of the side frame and being further provided with an internally threaded hub depending and a supporting 12. The combination of a side frame having a compression member provided at its top .with a depression and reinforcing ribs, of

a separate jack supporting block secured upon the top of said compression member and projecting into said depression, the projecting portion of the supporting block including a screw threaded boss.

Intestimony whereof, we have signed this specification. v

- HARRY W. STERTZBACH.

JOHN S. MGPHERSON.

Images