US1588326A - Central buffer coupling for railway and like vehicles - Google Patents

Description

June 8 1926. 1,588,326

J. MITCHELL ET AL CENTRAL BUFFER COUPLING FOR RAILWAY AND LIKE VEHICLES Filed August 14. 1922 fiwnionr John ml'lcizll, John 6'. 6 Uanrqy Jfibrgcyst Patented June 8, 1926.

UNITED srA'rEs PATENr OFFICE".

I JOHN MITCHELL AND JOHN CECIL GEORGE cossnY, or LONDON, ENGLAND.

CENTRAL- BUFFER COUPLING non. RAILWAY AND LIKE VEHICLES. I

Application filed August 14, 1922, Serial No. 581,886, andin Great Britain December 20, 1921. i i

The invention relates to central buffer couplings for railway and like vehicles and consists in improvements by which the under frames are to a large extent relieved from the draw and buffer stresses. 7

For this purpose the draw and buffer springs are disposed centrally in the under frame and the stresses exerted on the coupler at one end of the vehicle are directly transmitted to the coupler at the other end of the vehicle.

V The accompanying drawings illustrate examples of couplings according to the invention. Fig. l is a sectional plan of one construction and Fig. 2 a similar view of a slight modification.

In the arrangement shown in Fig. 1, the central longitudinals of the under frame are shown at A and A Two box shaped membersB, B are fitted between the under frames and their outward. longitudinal movements .are restricted by abutments a, a formed on or attached to the under frames.

A drawbar C passes through the inwardly disposed ends b, b -of the boxes B, B and is guided and supported by bearings cl, d provided in these ends. and buffing springs E, E are disposed between the ends 6, b of the boxes. Anauxiliary spring F surrounding the extended end of the drawbar C is compressed between a boss g on the box B and a washer h on the drawbar, the compression of the spring being adjusted by a nut i screw threaded on the drawbar.

Bars J, J are slidable in bearings pro vided in the ends 6, b of the boxes B, B and pass through the springs E, E and also through lugs 70, 70 on a connecting bridge piece K; these bars are held, respectively, against the box B and the bridge piece K by nuts j and j, which serve to adjust the pressure of the springs E, E 7

A bar G which with the bars J, J forms the drawbar on the right of the vehicle, passes through an aperture provided in the bridge piece K, and an auxiliary spring F is compressed between a boss 9 of the bridge piece and a washer k on the bar G a nut 2' on the end of the bar serving to adjust the pressure on the spring.

The auxiliary springs F, F take up the initial draft stress. The further draft and the bufiing stresses are taken up by the springs E, E

direction by the abutments a, a

The main draw Bearings M, M provided in the outer then the stronger springs E E The box B cannot move to the left because of the abutments a, a? on the left. The drawbar C? and the pin L during the movement slide in the bearing M Under the action of a buffing stress the box B is moved to the right, compressing the springs E E the box 13 being prevented from moving in that draft stress is applied in the right hand direction, the stress is transmitted by the rods J hJ 2 to the box B which is moved to the rig t. x I a In the arrangement shown in Fig. 1, the box. B in which the two auxiliary springs g, F are contained is longer than the box The arrangement shown in Fig. 9. differs from the preceding only in the disposition of the auxiliary springs F, F by which the boxes B, B are of the same length. The bars J, J are extended beyond the inner end wall I) of the box B and are secured to a bridge piece N adapted to slide on the drawbar O. The auxiliary spring F is disposed between the bridge piece N and the end plate I) of the box B. The action is substantially the same as described in nectionwith Fig. 1.

Central bufier couplers can be applied to vehicles in which the under frames have been designed for side bufiers, since the under frames which are usually too weak to withstand the buffing stresses of a central buffer coupling are according to the invention relieved from the greater part of these stresses.

I-Iaving thus describedthe nature of the i and like vehicles comprising in combination an under frame and longitudinals connected thereto, box members adapted to slide be tween said longitudinals, resilient means disthereto, box members adapted to slide between said longitudinals, abutments on said longitudinal-s limiting the outward movements of said box members, resilient means disposed between the inner ends of said box members and taking up both draft and buff ing stresses in either direction, a pair of drawbars each of which is connected to the inner end of one box member and is adapted toslide in the end walls of the other box member. n

3. A central buffer coupling for railway and like Vehiclescomprising in combination an under frame and longitudinals connected thereto, box members adapted to slide between said longitudinal's, resilient means disposed between the inner ends of said box 7 members and taking up both draft and buffing stresses in either direction, a pair of dr'awbars each of which is connected to the inner end of one box member and is adapted to slide in the end walls of the other box member, resilient means, adapted to take up the initial draft stresses, being interposed between each drawbar and the box member to whlch it is connected.

4:. A central buffer coupling for railway and like vehicle's comprising in combination an under frame and longitudinals connected thereto, box members adapted to slide between said longitudinals, abutments on said longitudinals limitingth-e outward move inner end of one box member and is adapted to slide in the end walls of the other box member, resilient means, adapted to take up the initial draft stresses, being interposed between each drawb'ar and the box member to which it is connected.

5'. central buffer coupling for rail-way and like vehicles comprising in combination an under frame and longitudinals connected thereto, box members adapted to slide between said longitudinals, resilient means disposed between the inner ends of said box members and talking up both draft and buffing stresses in either direction, an axiallf, arranged drawbar connected to the inner end of one box member and adapted to slide in the end walls of the other of said box members, and an axially arrangeddrawb'ar at the other end of said coupling, an extension of said drawbar, comprising a pair of parallel rods, adapted. to' slide in the inner end walls of said box members, and a bridge piece connecting the outer ends of said parallel rods.

In testimony whereof We have signed: our names to this specificatlon.

J HN IT HE JOHN CECIL GEORGE oossnr.

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