US1211789A - Car-truck. - Google Patents

Description

. G. K. THOMPSON. ma mum.- APPLICAUQN. EILED JUNE 2 I915.

1 138% Patented Jan. 9,1917.

2 SHEETS-SHEET 1.

I G. K. THOMPSON.

CAR TRUCK. APPLICA'LON FILED JUNE 2, 1915.

2 SHEETSSHEET 2- nsfiwxu' a $2 N attain;

Patented Jan. 9, 1917.

v'designated 1 is provided,

cal bearing collar 3, in extending'slots 4. are provided, as illustrated GEORGE K. THOMPSON, OF NEW YORK, N. Y.

cm'mucx Specification of Letters Patent.

Patented Jan. 9, 1917.

Application filed June 2, 1915. Serial No. 31,723.

To all whom it may concern:

Be it known that I, GEORGE K. .THoMrsoN, a citizen of the United States, residing at New York, in the'county of New York and State of New York, have invented certain new and useful Improvements in Car- Trucks, of which the followingis a specification.

This invention relates to car trucks and has primarily for an object to reduce jar and vibration of the rolling stock to a minimum.

Another object of the invention is to equalize the pressure of the rolling stock to prevent the thrust from being continuously exerted on one particular point, thereby preventing any part from being prematurely rendered unsuitable for use.

A further object is to maintain the equilibrium ofthe rolling stock at all times, even in the event of undue pressure being exerted on a specific portion of the truck, and to absorb shock occasioned by inequalities of the rails.

Other objects as well as the nature, characteristic features and scope of my invention will be more readily understood from the following description taken in connection with the accompanying drawings and pointed out in the claims forming a part of this specification. 1

Referring to the drawings; Figure 1 is a transverse sectional view of a car truck constructed in accordance with my invention, Fig. 2 is a side elevational view of the same, a portion of one of the levers being shown in section, 'Fig. 3 is a top plan view of my improved device, portions thereof being broken away and portions being shown in section to disclose details, Fig; 4: is a top plan view of one of the supporting yokes used in this invention, and Fig. 5 is a detail enlarged fragmentary side elevational view of one of the truck bolsters, illustrating to advantage the anti-friction means therein.

In the drawings, a truck frame generally which in the present instance, comprises a bolster 2 of the skeleton type. The bolster is formed intermediate its ends to provide a cylindriwhich longitudinally to advantage in Flg. 1. The top of the bolster 2 is provided with substantially semi-ovoid openings 5 on the opposite sides of the collar 3, the inner terminal of each of which communicateswithone of the slots 4. The opposite ends of the bolster 2 are in engagement with side frames 6, the oppositeend of each of which is engaged with a journal box 7. The upper marginal edge of each of the side frames 6, approximately midway the ends thereof, is provided with a depressed portion 8, having side flanges 9 formed at the opposite sides thereof. The opposite ends of the side frames 6 have axles 10 journaled therein in the usual manner with the terminalsthereof engaged in the journal boxes 7, while wheels 11 are mounted X13011 the axles in the usual manner.

sociated with the truck bolster 2, each of which in the present instance 1s of a subthe stantially semi-ovo1d configuration, apices of which are arranged to lie in proximity to each other, and having extended therefrom arms 13 and 14, the latter having its free terminal bifurcated; adapted'to receive the free terminal of the arm 13 between the branches thereof. The arms 13- and 14 are slidably arranged in the slot 4: of the collar 3, the being pivotally engaged with a pin 15. The cantalivers 12 are mounted in the semi-ovoid openings 5 of the truck frame 1 and are of an arcuate configuration. The outer terminal of each of the cantalivers is provided with an opening 16, which as shown to advantage in Fig. 1, increase in width from the upper marginal edges of the levers to the lower marginal edges thereof, thereby permitting movement of the levers in a 'vertical are at their proximate terminals, in

of the be noted that each of the is arranged through its re- 12, adjacent the lower marview of the pivotal axis 17 of each levers. It will pivot pins 17 spective lever ginal edge of possibility of minimum.

, A supporting yoke 18 depends, on eachweakening the levers to a pair of cantalivers 12 are movably asfree terminals thereof, 7

the latter, thereby reducing v side of the truck 1, from the side-sill 19 and the body bolster 19 of the car body and comprises parallelly arranged bars 20, which are spaced from each other and which are enlarged approximately midway their ends to provide ears 21, the latter being provided with alining openings 22, therein. The outer terminals of the bars 20 have plates 23 formed thereon which are adapted for snug engagement with the lower face of the sidesill 19 and are held in snug engagement therewith by bolts or other suitable fastening means. -It will be noted that the bars 20 are arcuate, and are depended sufiiciently far so as to dispose the ears 21 thereof substantially parallel-with the depressed portions 8 in the side-frames 6.

A link 24 is mounted througheach of the openings 16, and is provided, adjacent its opposite ends, with openings 25, the upper of each of said openings having a pivot pin 26 mounted therethrough, the opposite ends of which project beyond the lateral faces of the link, and are engaged in complemental recesses in the upper margins of the cantalivers 12, on the opposite sides of the openings 16. The opemng in the lower end of each of the links 24 is alined with the opening 22 in the ears of the yokes 18, a pivot pin 27 being engaged through said alining openings, as illustrated'to advantage in Fig.

1. It will be noted that each of the links 24 is movably mounted in a corresponding recess in the body bolster 19, a portion of the latter being broken away in Fig. 1 to disclose this formation.

Upon reference to Fi 5 of the drawings,

2 it will be noted that a rib 28 is formed upon the inner periphery of the collar 3, adjacent the lower end of the latter and is provided therein with recesses 29, which form; ball races for the anti-friction balls collar 3 of the bolster 1, the upper end there of being enlarged and in engagement with the sills 33 of the car body, whereby pressure on the car body is imparted to the cylinder 32. The outer periphery of said cylinder is engaged with the anti-friction balls of the ribs 28 and 31,. in order to facilitate movement of the cylinder in said collar. The cylinder is provided with diametrically opposlte longitudinally extending slots 34' therein, which aline with the slots '4 in the collar 3, asillustrated to advantage in Fig.

1. The arms 13 and 14 of the cantalivers 12 are passed through .the slots 34 in the cylinder 32 and likewise through longitudinally extending slots 35 in a piston 36, the latter being movably mounted in the cylinder '32. The cylinder 32 is provided with registering slots 37 which extend longitudi- .nally in said cylin er and in which the opposite ends of the in 15 are movably mounted, said pin being arranged through registering openings in the piston 36 to operate the latter simultaneously with the movement of the cantalivers- 12. It will be noted that the slot-37 in the cylinder 32 opens through the lower terminal of said cylinder, thereby facilitating assemblage of the parts, since the pin may be inserted therein, and removed therefrom expeditiously. The'proximate ends of the arms 13 and 14 are enlarged to provide cam-shaped peripheries, which project into the piston 36, said enlarged portions being provided with registering slots 38 therein topermit relative movement of said arms when pressure is exerted on the opposite ends of the cantalivers.

An elastic element or shock absorbing means 39 is mounted in the cylinder 32, which in this instance comprises a coilspring,.the uppermost convolution of which is in engagement with the upper end of the cylinder 32, while the lowermost convolution is in engagement with the upper .end of the piston 36. It will therefore be seen that pressure on the outer end of either of the cantalivers. 12 will be absorbed by the spring 39, whereas pressure 'on the car body will likewise be taken up by said spring by movement of the cylinder 32 toward the piston 36.

In operation therefore, it will be seen that should undue pressure be exerted upon one side of the car body, as by. the shifting of the contents of the car body when rounding a sharp curve or the like, the undue pressure which is exerted on this side of the car will be distributed to the center'and opposite side of the car, in view of the mech anism of my invention heretofore described. Assuming that undue pressure is exerted upon one side of the car, it will of course be observed that the cantaliver subjacent the lightest side of the car will be operated so as to impart movement to the pin 15, thereby operating the piston 36 in the cylinder 32 and likewise imparting movement to the opposite cantaliver. Assuming that pressure is normally exerted upon the entire car body, any jar or vibration of the rolling stock will be taken up, since the movement of the car body will be transmitted through the sills 33 to the cylinder 32, thereby moving the latter in the collar "3 against the resistance of the spring 39. It is moreover to be noted that pressure will be exerted upon every single point of the car truck, immaterial of what point undue pressure is applied in the car body.

'It will be understood that ,the above description and accompanying drawings comprehend only the general and preferred embodiment of my invention and that various minor changes in details of construction, proportioned and arrangement of parts may be made within the scope of the appended claims without sacrificing any'of the advanta es of my invention.

aving thus fully described my inven tion, what I claim as new and desire to secure by Letters Patent is:

1. In combination with a car body and truck, mechanism carried by the truck to distribute undue pressure applied to either side of the latter, and means cooperating the truck and wheels thereof, means cooperative between the body and truck to distribute undue pressure exerted at any point on the truck from the body and means in connection with the body and coacting with the first-named means but operable independently of the latter to take up jar from the body.

4. In combination with a car body and truck having a frame movable with respect tothe journals of the truck, a cantaliver mechanism associated with said truck and pivoted to the latter independently of pivotal connection with the body at the center.

thereof and in connection with the car body at the sides and resilient means between the center of the car and the cantaliver mechanism to distribute pressure equally to the truck, immaterial of the portion of the body to which the pressure is applied.

5. In combination with a car body and truck, a cantaliver mechanism associated With said truck and in connection with said body to equally distribute pressure of the latter to the truck, and an elastic element for absorbing shock from said cantalivers.

6. In combination with a car body and truck, 'a cantaliver mechanism associated with said truck and in connection with said body todistribute pressure of the latter, for equalizing strain on the truck, a shock absorbing means for said cantalivers, and means movably associated with the truck and coacting with said cantalivers, but movable independently of the latter for equalizing pressure on'the truck. 7. In combination with a rigid car body and the sills thereof; of a truck having a frame and turning means associated there with in conjunction with the body, cantalivers pivoted to the stationary truck at points remote from their inner ends, hangers dependent from the sills at the sides of the body, said cantalivers movably engaging in said hangers, links between the hangers and cantaliver-s and adapted to have lateral and longitudinal play, and spring means between the inner ends of the levers and the body.

In testimony whereof I aflix my signature in presence of two witnesses.- GEORGE K. THOMPSON. .Vitnesses:

ELIJAH W.. SELLs, CHAs. S. LEEDLANE.

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