US1819945A - Ballast tamping machine - Google Patents

Description

Filed Sept. 6, 1930 Patented Aug. 18, 1931 UNITED STATES PATENT owes MAURICE CCLLE'I, OF'PARIS, FRANCE, ASSIGNOR TO LES FILS DALBERT GOLLET, OFCI PARIS, FRANCE, A CORPORATION 013 FRANCE BALLAST TAMPING MACHINE Application filed September 6, 1930, Serial No. 480,209, and in Germany October 26, 1929.

Ballast tamping machines are know] such as the Collet tamping machines where in the hammers are mechanically controlled through a rotary electric motor. These machines may be mounted on single-rail trucks, the two or four machines carried by each truck being controlled by the same electric motor carried by the truck and the axis of which is vertical. These single-rail trucks are preferably connected two by two so as to prevent them from weighing upon the men who are in charge of the hammers. To allow each hammer to be controlled by a single man, there may be provided a support constituted by a cable secured to the hammer near its centre of gravity and wound over a drum carried by the upper part of the frame. This drum is secured to its stationary shaft through a spring which halances substantially the weight of the hammer. The workman may thus control the hammer without any great effort.

My invention has for its object the execution of an entirely different suspension means allowing the control of two hammers instead of one by one workman.

It has also for its object to render useless or at least optional the connection between the trucks running on the two rails, the

equilibrium of each truck being a very steady one.

My invention has for its further object to do away with the winding drum which still requires a certain effort to be made by the workman when lifting the device for passing from one tie to the next, by using the equilibrium obtained through the respective positions of the two tamping drums and of the electric motor, with reference to a 4 rocking shaft, use being made of a freely deformable polygon.

My invention has for its further object to allow the workman to use his legs instead of his arms for moving the trucks from one 4 tie to the next or along the track whereby he may benefit by the inertia due to his own weight when acting on the tamping hammers.

My improved machine comprises a singlerail truck with a seat allowing the workman sitting on it to put his feet on the ground, two electromechanically controlled hammers balanced by the weight of the motor being disposed on either side of the workman whereby th latter may work sitting and cause the truck to be balanced or to advance through the sole action of his legs.

In accompanying drawings given by Way of example:

Figure 1 is a side view of the ballast tamping machine;

Figure 2 is a plan View thereof;

Figures 3 and at show diagrammatically the successive positions of the device between one tie and the next.

The machine comprises a single-rail truck 1 with a seat 2 for the workman whose feet rest on the ground and with rollers 14 00- operating with the rail. The truck carries M a support 3 for the frame 4 adapted tof pivot around the trunnions 5. .he frame 4 carries at one end the motor (3 and at the other the arm 7 carryin the hammers. The connecting bar 8 between each hammer and the arm 7 is mounted so as to freely rotate round the axis of the latter. It is provided with devices such as a pivoting joint 9 and a universal joint 10 allowing the hammer 10 to be given any desired direction. The; hammer comprises a tool 11 and a control'go handle 12 of the usual type. The transmission of the movement of the motor to the hammer is provided as usual through shafts carrying bevel wheels which, for salre of simplicity, have not been illustrated. The truck 1 carries on the other hand a hand-rail 13 the use of which will be disclosed later. Figure 3 shows the truck in its position of use, the tool 11 bearing against the ballast to be tamped. The e0 workman, sitting if desired on the seat 2,acts onthe handle 12 in the direction 7 or f (Figure 3) according as to whether he wishes to raise or to lower the tool. For moving the tool towards or away from the axis of the rail R, he moves the handles 12 apart or together as illustrated by the arrows p, p (Figure 2). It should be noted that, when the workman urges the tool in the direction 7 during operation, after the lou slope of the tool has been chosen, this causes the hammer to bear against the prism formed by the ballast.

When it is required to pass over the tie A and to move the tool in front of the tie B (to the left of A in Figure 3), the workman proceeds as follows. \Vith the help of his legs and by pressing if required the tool handle in the direction of the arrow 7', he moves the truck backwards into the position of Figure 4. When this position is reached, the arm 8 is substantially vertical and the weight of the hammer borne by the hand-rail 13 is balanced by the weight of the motor bearing against the hand-rail 13. A comparatively small pressure exerted on the handle 12 will make the hammer rock around the hand-rail and disengage the tie while the balanced motor rocks backwards. The workman may now push the truck so as to pass over the tie and bring the hammer into a position such that, by raising the handle 12. he may bring the tool into its new operative position in front of the tie B. It is apparent that, owing to the balanc ing of the hammer by the motor which may be as perfect as desired, the machine may be brought from its operative position in front of a given tie into its operative position in front of the next by means of an effort reduced to a minimum to be given out by the workman.

Vhat I claim is 1. A ballast tamping machine adapted to run over one rail comprising a truck, wheels carrying same and lying in substantially the same vertical plane, two hammers carried by the truck on either side of the truck, means for giving them any desired direction in space, a motor controlling and balancing the hammers and a seat carried by the truck at a height allowing the feet ot'the workman seated on it to balance the machine and in a longitudinal position such that the hammers are within reach of the workman.

2. A ballast tamping machine comprising a truck, a low seat carried thereby, a frame carried by the truck and adapted to pivot around an axis perpendicular to the longitudinal axis of the truck, two hammers pivotally secured to said frame on either side of the truck and a motor carried by the frame and controlling and balancing the hammers.

3. A ballast tamping machine comprising a truck, a low seat carried thereby, a frame carried by thetruck and adapted to pivot around an axis perpendicular to the longitudinal axis of the truck, a horizontal shaft carried by the support perpendicularly to the longitudinal axis of the truck, an arm adapted to pivot around each end of the said shaft, a hammer secured through its centre of gravity to each arm, a control rod for each hammer extending towards the seat and forming a deformable arrangement with the corresponding arm and the horizontal shaft and a motor carried by the frame and controlling and balancing the hammers.

4. A ballast tamping machine comprising a truck, a low seat carried thereby, aframe carried by the truck and adapted to pivot round an axis perpendicular to the longitudinal axis of the truck, two hammers piv otally secured to said frame on either side of the truck, a motor carried by the frame and controlling and balancing the hammers, a control rod for each hammer extending in front of the seat and a rest carried by the truck for the said rod.

In testimony whereof I have signed my name to this specification.

MAURICE COLLET.

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