US624276A - Bolster - Google Patents

Description

Patented May 2, |899.

J. C. WANDS. A

BOLSTER.

(Application mad Mar. 21, 159e.)

No Model.)

No. 624,276. Patented May 2, |899. J. C. WANDS.

BULSTER.

(Applicatxon led Mar. 21, 1898.) CNo Model.) 2 Sheets-Sheet 2.

UNITEDr STATES PATENT OFFICE.

JOHN C. VVANDS, OF ST. LOUIS, MISSOURI.

BOLSTER.

SPECIFICATION forming part of Letters Patent No. 624,276, dated May 2, 1 899.

Application liled March Z1, `1898.Y l

To aZZ whom t may concern:

Be it known that I, JOHN C. WANDS, a citizen of the United States, residing at the city of St. Louis, State of Missouri, have invented a certain new and useful Improvement in` Bolsters, of which the following is a f ull,clear,v and exact description, suchas will enable others skilled in the artto which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is atop plan View of my improved bolster. Fig. 2 is a side elevational View, partly in section, of the same. Fig. 3 is an enlarged elevational view. Fig. 4 is an end elevational .view of the end casting. Fig. 5 is a cross-sectional view through the compression member of said block. Fig. 6 is a top plan view of the spring-seat. Fig. 7 is a crosssectional view through said spring-seat. Fig.

' Sis a detail view of the head-block and springseat as seen from the inside and Fig. 9 is a sectional view through one end of the bolster, showing a modified form.

This invention relates to a new and useful improvement in bolsters for car-trucks,the object being to construct abolster of the character described in such manner that ordinary channel-iron may be employed for the compression member, the tension memberrbeing of the material known as flitch bar iron or steel. Castings are also preferably employed to take up the end thrust of the com# pression member and aord means of attachment with the tension member without subjecting said tension member to abrupt curves. While I have mentioned these materials as being preferable, it is obvious that others could as well be used.

By the use of commercial rolled forms as the principal members of my improved bolster and the manner in which said forms are assembled I am able to produce a truck-bolster which under strains will resist deflection to a high degree, while at the same time it is lighter in weight and less expensive to manufacture for the load it carries than any other bolster on the market with which I am familiar.

The special features of this invention reside in the combination with a compression member whose end thrusts are taken up by Serial No. 674,611. (No model.)

head-blocks against which they abut, the tension member being bent aroun /said headblocks and secured to the e s of the compression member, a suitab ing-post being employed to separate said two members and form what is known asa strut. The compression member is preferably cambered to give it strength and in cross-section is of the form of an inverted rolled channel-beam, while the tension member is what is known as flitch bar iron or steel.

In the drawings, A indicates the compression member,which is preferablya rolled channel-beam, cambered as shown in Fig. 2.

B indicates the tensionvmember, which is preferably made of rolled iron or steel, commercially known as Hitch bar. This tensionmember is formed at its ends with lateral shoulders b, as shown in Figs. l and 2, which shoulders are designed to rest against shoulders c of the head casting or-block C. This block C-is' shown more clearly in Figs. 2 and 8, and consists of parallel side walls c', which are provided with vertical ribs c" on their outer faces, which ribs act as column-guides. These side walls, at their inner ends, are set in, forming shoulders 0"', which shoulders support the depending flanges of the channeled compression member. The top and bottom walls of the casting C are formed with seats for the tension member, which seats are connected at the outer ends of the casting by a rounded or curved portion, so that when the tension member is in position there will be no abrupt curves or sharp corners to lessen its tensile strength. Interior strengthening-ribs are provided for the casting in any suitable manner. When the compression member is in position, its ends t snugly against these blocks, being flush with the groove or seat for IOO E indicates the king-post or strut, which is preferably formed hollow for the passage of the king-bolt, said strut being provided with lateral iianges e to afford an extended bearing for the compression member, while the lower end is formed as a pocket or seat for the tension member. Suitable Webs may be employed to strengthen this strut, as is obvious.

Inassembling the different parts the strut is placed in position and the tension member bent over the blocks at the ends of the bolster, after which Suitable rivets or other securing devices d are introduced through the ends of the tension and compression members to hold said parts together. The sp ringseats arethen placed in position and the bolts introduced between the column-guides of the truck. The exertion of the springs bearing against the under faces of the spring-seats will hold the same in position, aided by the weight of the car on the bolster.

In Fig. 9 I have shown a sectional view through one end ofmyimproved bolster,showing a slightly-modified form of attachment of the tension member, in which instead of forming a T-head on said tension member I bend one end, as 'at d", under, which end rests against a'shoulder on block C. Rivets are provided for holding the parts together, as before described. y

WVhile I have shown the ends of the tension member as being secured to the ends of the compression member, the two members holding the block in position between them, it is obvious that means could be employed for securing the compression member to the block and the tension member to said block, thus dispensing with the attachment between the compression and tension members direct. Such-'separate attaching devices for the compression and tension members to the block are illustrated by dotted lines in Fig. 9, in which represents rivets for securing the compression Amember to the block, and grepresentsa rivet for securing the tension member to said block.

I am. aware that minor changes in the construction, arrangement, and combination of the several parts of my bolstercan be made and substituted for those herein shown and.

described without in the least departing from the nature and principle of my invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

v l. The combination with a commerciallymade compression member of channel-beam form, of a tension member bent at its ends to engage the ends of the channel-beam compression member, and a strut; substantially as described.

2. The combination with a commerciallyl made compression member of channel-beam form, of a iitch-bar or flat-plate tension member bent upy at its ends over the web of the channel-beam compression member, a strut, head-blocks tting on the ends of the compression member, and column-guides formed on said head-blocks; substantially as described. I

3. In a car-truck bolster, the combination with a compression member o`f channel-beam form, of a ditch-bar tension member, and head-blocks formed with seats for the compression member and around whichthe ends of. the tension member are bent, said ends being secured rmly in position at a point above the .head-blocks; substantially as described.

4. In a car-truck bolster, the combination with a compression member, of a tension member, head-blocks which receive the ends of said compression member, said head-blocks being extended beyond said compression member, and formed with seats for the tension member, which tension member is bent v around said head-blocks and is shouldered against the inner upper edges of said headblocks; substantiallyas described.

5. In a car-truck bolster, the combination with a compression member, of a tension member, head-blocks, which receive the-ends of the compression member, said head-blocks being extended outwardly some distance beyond said compression member, and formed with grooved seats for the tension member, means for securing said tension member to the compression member,-said tension member also being shouldered against the inner upper edges of the head-blocks, and columnguides on said head-blocks; substantially as described.

6. In a car-truck bolster, the combination `with a compression member,of a tension member,headb1ocks which receive the ends of said compression member, said head-blocks being extended' beyond said compression member and formed with seats for the tension member, means for securing said tension member to the compression member, column-guides formed on said headeblocks,and spring-plates; substantially as described.

'7. In a car-truck bolster, the'combination with a compression member, of a tension member,'and head-blocks which are formed to receive the ends of the compression member, and,also, afford abutments for the ends of the tension member, said tension member being formed at its ends to engage said head-blocks, and pull outwardly thereagainst when under tension, the tension member below the headblocks being unattached to the head-blocks and free to move; substantially as described.

8. In a car-truck bolster, the combination with a compression member, of head-blocks arranged at each end thereof, a tension -member which is'bent around said head-blocks, and over said compression member, and securing devices for the attachment of the extreme ends of said tension member to said compression member, whereby said tension member is free to stretch its entire length between the ends of the bolster and around the head-blocks substantially as described.

9. The combination with the compression member of head-blocks arranged at the ends thereof, and which extend outwardly beyond said compression member, a tension member whose ends are bent around said head-blocks, and thence extend inwardly and overlap the ends of the compression member, and rivets for securing the ends of the tension and compression members together; substantially as described. Y

l0. The combination with the compression member of head-blocks arranged at the ends thereof, and which extend outwardly beyond

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