US1101028A - Truck-bolster. - Google Patents

Description

G. T. JOHNS6N'& H. W. STERTZBACH.

TRUCK BGLSTER.

APPLICATION FILED 211.25, 1914 IN VEN T 0R5 Al lnmey Patented June 23, 1914.

2' SHEETSSHEET 1.

G. T. JOHNSON & H. STERTZBACH. TRUCK BOLS'RgR. APPLICATION mum rim/2s, 1914.

q Attorney UNITED, STATES PATENT OFFICE.

GEORGE '1. JOHNSON AND HARRY W. STERTZBACH, OF COLUMBUS, OHIO, ASSIGNORS TO THE BUCKEYE STEEL CASTINGS COMPANY, OF COLUMBUS, OHIO.

TBUCK-BOISTEB.

Specification of Letters Patent.

Patented June 23, 1914.

Application filed February 28, 1914. Serial No. 821,753.

To all whom it may concern Be it known that we, GEORGE T. Jon) SON and IIARRY W. STERTZBACH, of Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Im- 1 ovements in Truck-Bolsters; and we do iereoy declare the following to be a full, clear, and exact description of the invention, such as will enable: others skilled in the art to which it appertains to make and use the some.

Our invention relates to an improvement in truckbolsters and is an improvement on the construction disclosed in Patent No. 776,046 granted to Samuel P. Bush, Novemher 29th, 1904.

The construction disclosed in the patent above referred to, consists of a top plate or compression member and a bottom plate or tension member, spaced the greatest distance apart at their centers where they are connected by a. strut, and the lower member having an a preciably greater incline than the tepmem er. The compression and tension members are also connected by the in tegral side members, which latter are pro vidcd with central openings, and the top member is provided with a center bearing.

Our invention consists in providing a bolster as above described, with recessed seats adjacent the ends of the compression member in which the side bearings are secured, and the tension member with or without recesses for roll-er bearings.

Our invention further consists in a bolster the compression member of whic is provided with recessed seats for the side bearings and a reinforcing body of metal integral with said top member and projecting into each recess. 1

Cur invention further consists in a bolster omposed of compression and tension memers and provided with recessed seats and reinforcing columns located immediately under seats and connecting the top and hot tommembers.

In the accompanying drawings, Figure 1 a view in side elevation of a bolster embodying our invention; Fig. 2 is a view in top plan of one half of the bolster; Fig. 3 is a bottom plan of same; Fig. 4 is a view in section through, the tension member at one end showing the recesses for the hear: ing roller; Fig. 5 is a view in section on the line a: a: of Fig. 2, Fig. 6 is a view in section on the line 3 g of Fig. 2, and Fig. 7 is a view in section showing the side bearing in place but not bolted or riveted to the bolster.

1 represents the top plate or compression member, and 2 the bottom plate or tension member connected by the side members 3 and by the strut 4, all cast integral. The top or compression member 1 is provided adjacent its ends with the recessed seats 5, the walls of which recesses conform in contour, to the contour of the base (i of the side bearings 6 which latter rest within said depressed seats. \Ve make theseside bearing seats with a centrally located projection 7 at one side, and a centrally located recess 8 at the opposite side in the plane of the projecting part 7, so that the part of the bolster entering and filling said recess in tho side bearings constitute in effect a reinforcing body of metal projecting into the recessed seat for the side bearing from the outermost limits of the latter. Y

The lower or tension member is provided adjacent its two ends with depressed seats or bearings 9, there being in the present instance three depressions, for three rollers at each end of the holster.

The vertical space within the truck for the bolster ends is necessarily limited. The enforced limitation in the thickness of the bolster ends necessarily detracts from its strength, and this thickness is further decreased by the recesses in the tension member for the roller bearings, and by the recesses in the compression member for the side bearings. It is cssentia-l in designing a bolster. to have it as nearly as possible of uniform strength from one end to the other, and while there is ample opportunity to provide for all stresses in the main body of the bolster, it is more dii'licult to take care of them at the ends, and particularly so in this special type having recesses in both the compression and tension members. In order to secure such a disposition of the metal within the limited space at the ends as will take care of the stresses, we construct the re- 7 pass through both the upper and lower member: 1 and 2 and through columns 11 integral with said members, as shown in Fig. 5, the strength of the bolster is increased sufficiently to compensate for all reduction in depth caused by the recesses.

Having fully described our invention What We claim as new and desire to secure by Letters-Patent, is

1. A car bolster consisting of a top member and a bottom member connected at their ends, the top member having a recessed seat on its upper face near each end to receive a side bearing, and the bottom member provided on its outer face adjacent each end with recesses to receiveroller bearings 2. A car bolster consisting of a top memher and a bottom member connected at their ends, the top member having a recessed seat in its upper face near each end to receive a side bearing and a reinforcing body of metal integral with said top member and projecting into each recessed seat from the outermost limits of the latter.

3. A car bolster consisting of a top member and a bottom member connected at their ends, the top member having a recessed seat in its upper face near each end to receive a side bearing and a reinforcing body of metal integral with said top member and projecting into each recessed seat from the outer limits of the same, the bottom member being provided on its outer face adjacent each end with recesses to receiveroller bearings.

4. A car boistcr consisting of a top member anda b-"ttom member connected at their ends,tlie top member having a recessed seat in its upper face near each end to receive a.

side bearing, and a reinforcing body of metal for each recessed seat, the said body being integral with the to member and projecting into each recesse scat centrally of the bolster, the bottom member being provided on its outer face adjacent each end with recesses for roller bearings.

5. A car bolster consisting of a top member and a bottom member connected at their ends, the top member having a recessed seat in its upper face near each end to re ceive a side bearing, and reinforcing columns located immediately under said seats and connecting the top and bottom members and provided with bolt holes which extend through said member and columns.

6. A car bolster consisting of a top mem ber and a bottom member connected at their ends, the top member having a recessed seat in its upper face near each end to receive a side bearing, reinforcing columns located immediately under said seats and connecting the top and bottom members and provided with belt holes which extend through said member and columns, the lowbr mem ber bein provided on its outer face with recesses E01 roller bearings.

In testimony whereof, we have signed this specification in the presence of two subscribing witnesses.

GEORGE T. JOHNSON. HARRY W. STEBTZBACH.

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