US2571172A - Transmission device - Google Patents

Description

@eci 116 L. RQBHN AL TRANSMISSION DEVICE Original Filed Dec. 13, 1939 2 Sheets-Sheet l v N r Z. Rani.

M- VAN R0005!!- 9% 9 1953 a... ROBIN ET AL 15 9 7 TRANSMISSION DEVICE Original Filed Dec. 13, 1939 v 2 Sheets-Sheet 2 Patented Oct. 16, 1951 TRANSMISSION DEVICE Leo Robin and Mathieu van Roggen, Sprimont, Belgium; vested in the Attorney General of the United States Original application December 13, 1939, Serial 309,100. Divided and this application March 24, 1945, Serial No. 584,617. gium December 13, 1938 In Bel- 4 Claims. (01. 74-675) This application is a division of Serial #309,100, filed December 13, 1939, now Patent #2,372,226, March 27, 1945.

The present invention relates to power devices for driving receiver mechanisms.

Its chief object is to provide a device of this kind which is better adapted to meet the requirements of practice than those used up to this time and in particular which is capable to increase the range of torques and speeds which canbe obtained for the receiver mechanism.

Preferred embodiments of the present invention will be hereinafter described with reference to the accompanying drawings, given merely by way of example and in which:

Fig. 1 is an axial sectional view of a device according to our invention;

Fig. 2 is a diagrammatical view ShOWing the relative arrangement of some elements of the device of Fig. 1;

Figs. 3 and 4 are two views similar to Figs. 1 and 2, respectively, but relating to another embodiment of our invention.

In the construction shown by Figs. 1 and 2, the

receiver member to be driven by our device is receiver shaft 2.

Our device includes a frame 15 in which are journalled two shaft members I and I both coaxial with receiver shaft 2.

Free-wheel devices |3l4 and lBll are interposed between, respectively, shaft member I and frame 55 and shaft member I and said frame 15 so as to make it possible for said shaft members to rotate with respect to said frame only in one direction, the same for both shaft memhere, for instance the clockwise direction as shown by Fig. 2. V

Shaft members I and l are interconnected b a sun-and-planet wheel system including three parts mounted in said frame concentrically with said shaft members, to wit:

A sun-wheel part 3 keyed on or rigid with shaft member 1 An orbit wheel part 5 rigid with the othershaft member I; and

A planet-wheel carrier 6 rigid with'receiver shaft 2. In this planet-wheel carrier 6 are journalled planet-wheels 4 in mesh with both said sun-wheel 3 and said orbit wheel 5.

An electric motor M is mounted on frame [5 to drive shaft i this motor having for instance its field winding rigid with frame and its armature rigid with said shaft member I Another electric motor M also mounted on frame" 15, is similarly adapted to drive shaft member 1 i Switches W and W make it possible to supply at will said motors with current.

Such a device works as follows:

Motor M isfirst started by means of switch W Then, when the receiver mechanism mounted on shaft 2 has been started, the second motor M is started by means of switch W In the embodiment illustrated by Figs. 3-4, the general arrangement is the same, but a single electric motor is provided, the rotor R and the stator S of which areadapted to act respectively on the two above mentioned shafts, the whole working for instance in'the following manner:

Through the medium of switch W, current is distributed in such manner that the rotor first turns in the clockwise direction (simple arrow of Fig. 4). The rotor is then free to turn and the reaction is supported by free-wheel device I3-l4, which coacts with the orbit wheel. We thus obtain a first speed of shaft 2.

When the maximum speed has been reached, the direction of working of the motor is reversed by means of switch W, which causes the rotor to stop in view of the action of free-wheel device 16-41. The stator then starts turning and produces', through the working of the epicycloidal gear,'a second speed of shaft 2 which is slightly lower than that of the motor; in a proportion which depends upon the characteristics of the epicy-cloidal gear.

In any case, whatever be the particular embodiment that is chosen, it is possible, according to the present invention, to transmit energy with a range as wide as possible, both of the torques and of the speeds'of the output shaft.

It will be readily understood that such an invention can be given many different applications and that it will be particularly interesting when the inertia per H; P., that is to say the weight that is to be moved, in the case of vehicles, is of high value, or again when the starting torques are of considerable value as compared to the. normal working torques. j

For instance, in particular, the invention is especially well adapted to the traction of vehicles, either road vehicles or track vehicles, such, for instance as railroadautomotive cars.

What we claim is:

1. A device of the type described for transmission of driving power to a receiver member which comprises, in combination, a stationary frame, two concentric shaft members, free-wheel devices between said respective shaft members 3 and said frame to permit each of said shaft members to rotate only in one direction, the same for both, with respect to said frame, a sun-andplanet wheel system including three parts journalled in said frame concentrically with said shaft members, to wit, a sun-wheel part, an orbit-Wheel part and a planet-wheel carrier and planet wheels journalled in said carrier part and interposed between said sun-wheel and orbitwheel parts, one of said wheel parts being keyed on one of said shaft members, another of said three parts being coupled with one of the remaining two members and the third part being coupled with the other of the remaining two members, to ensure the drive of said receiver member in the same direction when either of said shaft members rotates in the direction permitted by the free-wheel device associated therewith, an electric motor having both its armature and its field winding journalled in said frame and coupied with said respective shaft members coaxially therewith, to drive each of them against the reaction supplied by the free wheel device associated with the other and switch means for reversing current distribution in said field winding to ensure the drive of each of said shaft members alternately.

2. A device of the type described for transmission of driving power to a receiver member which comprises, in combination, a stationary frame, two concentric shaft members, free-wheel devices between said respective shaft members and said frame to permit each of said shaft members to rotate only in one direction with respect to said frame, a sun-and-planet wheel system including three parts journalled in said frame concentrically with said shaft members, to wit, a sun-wheel part, an orbit-wheel part and a planet-wheel carrier and planet wheels journailed in .said carrier part and interposed between said sun-wheel and orbit-wheel parts, one of said wheel parts being keyed on one of said shaft members, another of said three parts being coupled with one of the remaining two members and the third part being coupled with the other of the remaining two members, to ensure the drive of said receiver member in the same direction when either of said shaft members rotates in the direction permitted by the free-wheel device associated therewith, two electric motors mounted in said frame and arranged to drive said respective shaft members separately, each against the reaction supplied by the free-wheel devices associated with the other one and switch meansfor supplying current to said electric motor means to ensure the drive of each of said shaft members successively.

3. A device of the type described for transmission of driving power to a receiver member which comprises, in combination, a stationary frame, two concentric shaft members mounted in said frame, a free-wheel device between each of said shaft members and said frame to permit rotation of said shaft members with respect to said frame only in one direction, the same for both shaft members, a sun-and-planet wheel 4 system including three parts journalled in said frame concentrically with said shaft members, to wit, a sun-wheel part coupled with one of said shaft members, an orbit-wheel part coupled with the other shaft member and a planet wheel carrier coupled with said receiver member, said sunand-planet wheel system including planet wheels journalled in said carrier and interposed between said sun-wheel and said orbit-wheel, and controllable variable action electric motor means mounted on said shaft members for driving with respect to said frame in the above mentioned direction either the second mentioned shaft member alone or the first mentioned shaft member, whereby different ratio transmissions can be obtained by varying the action of said motor means.

4. A device of the type described for transmission of driving power to a receiver member which comprises, in combination, a stationary frame, two concentric shaft members mounted in said frame, a free-wheel device between each of said shaft members and said frame to permit rotation of said shaft members with respect to said frame only in one direction, the same for both shaft members, a sun-and-planet wheel system including three parts journalled in said frame concentrically with said shaft members, to wit, a sun-wheel part coupled with one of said shaft members, an orbit-wheel part coupled with the other shaft member and a planet wheel carrier coupled with said receiver member, said sunand-planet wheel system including planet wheels journalled in said carrier and interposed between said sun-wheel and said orbit-wheel, and a reversible electric motor having its armature and field windings journalled in said frame and coupled with said-respective shaft members coaxially therewith for driving with respect to said frame in the above mentioned direction either one shaft member alone or the other shaft member whereby diiferent ratios of transmission can be obtained by reversing said motor.

LEO ROBIN. MA'I'HIEU VAN ROGGEN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 516,916 Coleman Mar. 20, 1894 516,917 Coleman Mar. 20, 1894 732,377 Rowntree June 30, 1903 1,076,416 Gammeter Oct. 21, 1913 1,076,632 Gammeter Oct. 21, 1913 1,263,125 Sawyer Apr. 16, 1918 1,540,610 Desmoulins June 2, 1925 1,696,836 Bushyager Dec. 25, 1928 1,837,803 Weston Dec. 22, 1931 2,372,226 Robin et a1 Mar. 27, 1945 FOREIGN PATENTS Number Country Date 399,223 Great Britain Oct. 2, 1933 407,760 Great Britain Mar. 29, 1934

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