US1406801A - Centering device for trucks - Google Patents

Description

W. E. WOODARD.

CENTERING DEVICEFOR TRUCKS.

APPLICATION FILED APR. 23, 1920.

Patented Feb. 14,

IN VEN TOR.

94,. A TTORNEY S.

MINE-$29, jaw/7W W. E. WOODARD.

CENTERING DEVICE FOR TRUCKS.

APPLICATILON FILED APR.23,1920.

Patented Feb. 14, 1922.

3 SHEETS-SHEET 3- 'INVHVTOR.

WILLIAM E. wocnaen, or roassr HILLS, NEW 1031:.

CENTE RING DEVICE FDR TRUCKS.

moaser.

Specification of Letters Patent. Patented Feb 14,-

npplication filed April 23, 1920. Serial No. 375,967.

1 T all whom it may 0002 cam Be it known that I, Wnmmr E. lVooo ARI), a citizen of the United States, residing at Forest Hills, in the county of Queens and State of New York, have invented certain new and useful Improvements in Centering Devices for Trucks, of which the following is a specification. Y

My invention has reference to an inproved device of the character specified which is intended for use primarily on locomotive engine trucks, but is'also applicable to service on trucks for tenders or other railroad-vehicles and the first of the objects of my present invention" is to provide a centering mechanism for trucks of whatare Commonly called the swing or lateral motion type and which will'ati'ord sucli resistance to lateral motion as may be desired while permitting as large a degree of freedom in action as may he required by the deflection of the truck in passing curves or otherwise. 1 A further object of my present invention is the provision of improved means for stabilizing or centering the apparatus which permits the deflection; to provide for an i ncreased wear capaclty and at the same time permit of ready renewal of worn parts and replacement thereof with new ones with a minimum of trouble and expense.

In order that my invention may he better understood I will proceed to describe the same in connection withthe accompanying "drawings, wherein: 35

rigure 1 is an end elevation of a truck to which my invention is applied; Figure 2 is a a plan View of such truck; Figure 3 is an enlarged figure showing in plan view the operative mechanism of my centering means; Figure 4 is a sectional view taken on the line H of Figure Figure 5 is an enlarged detail of one of: the pairs of centeringdevices; Figure G is an end elevation of the apparatus shown in Figure 5; 'and' Figure 7 is a detailed view showing a method which I employ for conveniently and economically constructing onset the detailed parts. p Referring now more particularly to Figures 1 and 2 it will be seen that I have therein shown a truck such as is used commonly in locomotive practice in which there" is a main frame 1 which is made in one piece of cast metal such as cast steel and which has wheels 2, and an axle mounted in suitable at 8 are seated in grooves formed in the v bearing strips 9 which are secured b'ybolts- 10 on the upper side of the cross" member or bridge 11, which latter in the construction shown'is integral with the side members 12 f of the unitarybody of the truck.

Along the center line of the center plate transversel'yof the longitudinalexis of the truck, I provide on either-"side bf the plate depending lugs 13 which are connected "at" each side with cooperating lugs 15 project-"7 M ing upwardly from the, center'part of the rocking members, the connection between lugs 13 'and'15 and pins 16;-

By the arrangement j i by eans of links l4-- I ust described":

pairs of rocking members are held in proper position with relation to" the other parts I while at the same time permitting theidoivn ward extension of the center pinivwhich P passes below the'plate 11 so that it they be a provided with a. suitable pin or-other se curing device and as indicated 'inithe drawi ing it will not be interfered with by'the action of thelinks 14- or lugs 15.-'

As shown in Figures 5 and 6 I"h'ave made the rocker members with a middle part 17. having flanged ends 18to which, bysuitable rivets 19, there are secured the heart shaped members 20 which carry the load' andiare I preferably made of hardenmaterialjsuch as 9 some form of special'steelj In Figure '7, Ihave shown a'preferred method for forming the bearing strips 9 which are made of special durable steel of bar formation, two of which I pIaceJto-"IOO, gether as shown in this'figureandwwhile clamped in such position drill *atjthe point marked 21 so'that when the two bars are separated the twostrips- 9 on opposite sides of the center piif will have theirrecesses exactly alined for proper support/of the rocker members. By providing thebearing strips 9 between the plate 11 and the-rocker members and arran lng these strips so the' 'tate ren wator' repairs where this is necessitated by wear of'the rocker members upon the strips and also reduce the amount of wear by employing'strips of harden-material than the material of the main truck casting, but I am also enabled to do the necessary machining with very much less difiiculty and expense than is required to machine therequisite seats at the bottom of the pocket heretofore usuall used.

It will be seen thatin t 'e arran ement above described, I have provided har metal bearing the said several'parts and made it. possible to make replacement where necessary without loss or destruction-either of the bolster,

center pin casting or of any art of'the main the rockers themselves; '8 0 truck ram castmg or of t e'body art of It will be observed that while I "have shown my invention as applied to a four wheel truck the same can be .used in association with two wheel trucks or other types of i construction.

I claim: a

1. A double end centering device rocker for trucks havin 81 body, portion vof relatively soft metal with "attaching faces on its ends and centering devices of relatively hard metal secured to the ends of 'said body v portion.

2. centering device for railway trucks having a center late and center pin, rocker members on boli'sides of said center pin, supporting seats for said rocker. members and link connections between the center plate and each rocker member in vertical alinement on either side of the centering pin.

3. A self centering truck for railway vehicles comprising a truck frame having a. pocket for the centering parts provided with a bearing strip seat, a separate bearing strip seated in the pocket, a plurality of centering device'sea'ts 1n predetermined spaced relation formed in the bearing strip, centering rockersre'sting in said bearing strip seats in spaced relatlon, and means for securing said I strip to the pocket.

4. A self centering truck for railway veihicles' comprising a truck frame having a substantially central pocket depending below having a center plate and a center for receiving the centering parts said pocket I i being provided with a bearing strip seat, a separate bearing strip seated-in the pocket,

centering rockers, a plurality of seats in predetermined spaced relation formed in the bearing strip and in which the rockers are journaled in spaced relation, and means for securing said stri to the pocket;

a 5. A self centering truck for railway vehicles comprising a truck frame havinga bearing-strip seat, a separate bearing strip seated thereon and provid'ed with two pairs of spaced seats,- a" air of'rockerseach journaled in one of sai pairs of seats, and means for securin said strip.

6. A. set centering truck hicles comprising having a cket for railwa ye an integral truck rame bearing stri seated in said pocket, a plurality of centermg device seats in predetermined spaced relation formed inthe bearing strip, centering rockers resting in said bearing strip seats in s ced relation, and 'nrieans 35 for securing sai strips to the pocket.

77. A centering device for railway trucks 1n arocker member on each side of sai pin and 'a.link connection at each side of sai ,0

pin between the rocker member and the center plate, said link connections lying in the vertical transverse plane which cuts the center of the pin.

8. A'centerlng device for railway trucks having a center plate and a center pin, a rocker member on each side of said pin, suporting seats for each of said rocker mem- )ers at each side of the pin and placed at substantially equal distances from the pin longitudinally of the truck, and a link connection between the center plate and each rocker at each side of the pin, the point of attachment on the rockermembers being substantially midway between the sipport-ing seats.

9. A double end centering'dcvice rocker for trucks having a central body portion with centering members at each end and a lug connecting means on the bodyportion 11o midway between the centering members.

10. self centering truck for railway ,'ve-

hicles comprising a truck frame having a 1 bearing strip seat, a separate bearing strip seated thereon and of seats'in predetermined spaced relation rocking members journaled in said seats in spaced relation, and means for securing said strip.

In testimony signed my name.

' WILLIAM WOODARD.

or-the centering parts provided wit a bearing strip seat, a separate, 80

provided with aplurality- 116 whereof, I i have hereunto '120

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