US775743A - Car for traveling on single-rail elevated railways. - Google Patents

Description

PATENTED NOV. 22, 1904.

F. B. BEHR. CAR FOR TRAVELING 0N SINGLE RAILYELEVATED RAILWAYS.

APPLICATION FILED JULY 18, 1904.

3 SHEETSSHBET 1.

N0 MODEL.

No. 775,743. PATENTED NOV. 22, 1904.

F. B. BEHR.

CAR FOR TRAVELING ON SINGLE RAIL, ELEVATED RAILWAYS. APPLICATION FILED JULY 18,1904.

N0 MODEL, 3 SHEETS-SHEET 2.

PATENTED NOV. 22, 1904.

v E. B. BEHR. CAR FOR TRAVELING 0N SINGLE RAIL ELEVATED RAILWAYS.

APPLICATION FILED JULY 18, 1904.

3 SHEETS-SHEET 3.

.NO MODEL.

Patented November 22, 1904.

UNTTEE STATES PATENT EEicE.

FRITZ B. BEHR, OF LONDON, ENGLAND.

CAR FOR TRAVELING ON SINGLE-RAIL ELEVATED RAILWAYS.

QPEGIFICATION forming part of Letters Patent No. 775,743, dated November 22, 1904.

Application filed July 18, 1904. Serial No. 217,075. (No model.)

To (LZZ whom it may concern:

Be it known that I, FRITZ BERNHARD BEHR, civil engineer, a subject of the King of Great Britain and Ireland, residing at 5 Queen Annes Gate, London, England, have invented certain new and useful Improvements Relating to Cars for Traveling on Single-Rail Elevated Railways, of which the following is a specification.

Cars hitherto designed to run on a single- 'rail elevated railway have been constructed with bogies carrying the running-wheels and also guide-wheels which turn on vertical axes and run on guide-rails fixed on each side of the track to the standards that support the single rail.

One disadvantage of the construction as at present in use is that when the bogie is traveling on a curve and is more or less inclined by centrifugal force or from any other cause the guide-wheels on the side which has gone up no longer retain their proper positions on the guide-rail, while those on the side which has gone down are also displaced from their proper position against the guide-rails and bear against the latter with such a considerable pressure that much power is lost, and another result is that it is impossible to allow the car to assume too great an inclination when passing through curves at very high speed and that, therefore, the greatest comfort is not as much secured to the passengers as would be the case if the car could be allowed a greater inclination.

By the present invention these disadvantages are overcome and the guide-Wheels are kept in proper position and in constant fair contact with the guide-rails for running whatever may be the inclination of the bogieframe and of the car, while on the side where the car is inclined downward the guidewheels bear with a smaller pressure than was the case in previous constructions unless it is desirable in very sharp curves to check the inclination of the carriage before it has at tained the maximum for such curve, in which case the arrangement may be such that the pressure is increased on the inside guidewheels on the side where the car is inclined downward in proportion to the remaining centrifugal force.

The axles of the guide-wheels are mounted on the bogie-frame in such a manner'that the frame can move independently of the axles in obedience either to centrifugal force or any other cause which may tend to deflect the car to either side, and the axles are kept always in the position for the guide-wheels to run against the face of the guide-rails by springs. These springs are between the bogie-frame and a sliding bar or roller which is urged by the springs against the axle to keep the guide-wheels against the guide-rails.

The upper part of the surfaces of or on the axle against which the sliding bar or roller bears is curved in such a manner that as the bogie-frame rises by centrifugal force or any other cause the pressure of the spring or springs to force the bar or roller against the axle increases, so that the guide-wheels do not leave the guide rails, notwithstanding their tendency to leave them, owing to the centrifugal force of the wheels and axle or from any other cause. The lower part of the said surface is curved in such a manner that as the bogie frame descends by centrifugal force orfrom any other cause the pressure of the springs remains approximately constant unless it be desired that the inclination of the car be checked, when the lower part of the surface is curved similarly to the upper part, so that the pressure of the springs on the axle increases proportionately. These curves are calculated to suit the radius of the curves of the track whereon the car is to travel, the speed of travel, and the weightof the car and of the guide-wheels.

One form of construction according to this invention is shown in the accompanying drawings, in which- Figure 1 is a side elevation of a car-bogie; Fig. 2, a vertical section on line A A of Fig. 3, which is a plan.

On each side of the track are fixed to the standards supporting the track -rail a two rails Z), on each side of which runs a guidewheel 0. The guide-wheels of each pair turn on an axle f, provided with arms Z, the ends of which are arranged to slide in guides in, the one guide fixed to the saddle h of the bogie-frame and the other to another part, 0, of the frame. The guides k are arcs of circles struck from points in the middle line of the upper surface of the track-rail a. Fixed to or cast in one piece with each axle are blocks d, which form bearing-surfaces for pieces or rollers e, projecting from a bar n, bolted to sliding casings a, containing springs g, the compression of which is adjustable by turning the nuts g. The surfaces of the blocks d, on which bear or press the rollers (5, are shaped to curves plotted by calculation, so that as the inclination of the bogie-frame and the movement of the wheels increase with increase of centrifugal force or from any other cause, and the rollers c consequently slide up the surfaces of d on one side of the track, the pressure which keeps the wheels 0 against the rails 5 increases. On the other hand, the rollers e on the side of the track where the inclination of the car is downward slide down the surfaces of d, and the pressure here remains nearly constant, unless the curve be as shown in dotted lines, when the pressure will increase on this side also.

Obviously this invention is applicable to any number of guide-wheels, whether on each side or only one side of the track, and the curved surfaces may be carried by the bogie-frame, while the spring-pressed rollers are fixed to the axles.

Having thus described the nature of my said invention and the best means I know of carrying the same into practical effect, I claim 1. In a bogie-frame for a car which is to travel on a single-line elevated railway, guidewheels, axles for the guide-wheels and curved guides wherein the said axles are free to slide.

2. In a bogie-frame for a car which is to travel on a single-line elevated railway, guidewheels, axles for the guide-wheels and guides wherein the said axles are free to slide, the said guides being parts of a circle having its center on the railway.

3. In a bogie-frame for a car which is to travel on a single-line elevated railway, guide- Wheels, axles for the guide-wheels mounted to move independently of the frame when the latter oscillates on the railway, curved surfaces, and springs acting on the said surfaces in such a manner that the guide-wheels are constantly kept in approximately the same position.

4:. In a bogie-frame for a car which is to travel ona single-line elevated railway, guidewheels, axles for the guide-wheels mounted to move independently of the frame when the latter oscillates on the railway, curved surfaces on the said axles and springs in compression between the frame and the said surfaces.

5. In a bogie-frame for a car which is to travel on a single-line elevated railway, guidewheels, axles for the guide-wheels mounted to move independently of the frame when the latter oscillates on the railway, springs, and curved surfaces against which the said springs press, the curvature of such surfaces being such that when the frame is inclined the pressure of the spring on the side away from which the frame is inclined increaseswith the degree of the inclination.

6. In a bogie-frame for a car which is to travel on a single-line elevated'railway, guidewheels, axles for the guide-wheels mounted to move independently of the frame when the latter oscillates on the railway, springs, and

curved surfaces against which the said springs press, the curvature of such surfaces being such that when the frame is inclined the pressure of the spring on each side increases with the degree of the inclination.

7. Abogie-frame for a car which is to travel on a single-line elevated railway, comprising guide-wheels, axles for the said guide-wheels, guides which are circular arcs struck from the railway and in which the axles are free to slide, curved surfaces on the said axles and springs in compression between the said surfaces and the frame.

8. Abogie-frame for acar which is to travel on a single-line elevated railway, comprising guide-wheels, axles for the said guide-wheels, guides which are circular arcs struck from the railway and in which the axles are free to slide, curved surfaces on the said axles and springs in compression between the said surfaces and the frame, the curvature of the said surfaces being such that when the frame is inclined the pressure of the spring on the side away from which the frame is inclined in' creases with the degree of the inclination.

9'. Abogie-frame for a car which is to travel on a single-line elevated railway, comprising guide-wheels, axles for the said guide-wheels, guides which are circular arcs struck from the railway and in which the axles are free to slide, curved surfaces on the said axles and springs in compression between the said surfaces and the frame, the curvature of the said surfaces being such that when the frame is inclined the pressure of the spring on each side increases with the degree of the inclination.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FR. B. BEHR. Witnesses:

L. FRANK OTTOFY, FRANK Gr. SMITH.

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