US1460281A

US1460281A - Regulating gear

Info

Publication number: US1460281A
Application number: US495146A
Authority: US
Inventors: Schroder Edmund
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-08-24
Filing date: 1921-08-24
Publication date: 1923-06-26
Anticipated expiration: 1940-06-26

Description

June 26, 1923.

E. scHRinER 'REGULATING GEAR Filed Aug. 24. 1921 uw f/z/ 706 Edward fic/ra 'der fZZ/Q Patented June 26, 1923.

P i a lg: ii, i

EDMUND SGERGDER, 0F BERLIN, GERMANY.

REGULATING GEAR.

Application filed August 24, 1921. Serial No. 495,146.

To all whom it may concern:

Be it known that I, EDMUND SoHRonnR, a citizen of the German'Republic, and residing at Nos. 48-51 Maybach-Ufer, Berlin, Germany, have invented certain new and useful Improvements in Regulating Gears, of which the following is, a specification,

This invention relates to a planet-wheel changespeed gear and is so constructed as to permit of being employed as a changespeed gear, its particular effect being that variations in the number of revolutions of a driving shaft are transmitted to a driven shaft coupled with the gear only in a reduced measure. This is important for purposes where the number of revolutions of a shaft shall be as uniform as possible and where perfect uniformity of the driving motor cannot be attained with complete dependableness.

My invention is illustrated by way of example in the accompanying drawing in which Figure 1 is an axial section through a gear constructed according to this invention, and Figure 2 is a plan of the same.

Z) is a member of the planet-wheel gear; it is its driving wheel which is secured to the driving shaft 6'. c and d are the planet wheels of this gear. The planet-wheels are bevel-wheels in the instance shown attached to a carrier m, and encompassed by a band m to which is affixed an angular arm cl forming at its end a bearing for a worm 7' which meshes with a stationary worm-wheel e held by an angular supporting member 6' and arranged co-axially with the planetwheel gear.

Afiixed to the band m is also an arm 2 arranged at 90 with respect to the arm cl and extending to the other side of the planetwheel gear. The free end of this arm has attached to it a bearing'y located oppositely to a sleeve 'w arranged upon the shaft a and supporting together with said sleeve a shaft 92 to which is secured a friction wheel 1' contacting with the gear-wheel a, as well as with a friction disk j afiixed to the shaft a.

The carrier 12?. of the planet-wheels is rotatably supported upon the shaft 6.

The worm f is aflixed to a shaft 9 having at its outer end a chain-wheel g connected by a chain 9 with another chain-wheel g secured to the outer end of the shaft w. The parts 9 g g may be replaced, of course by equivalent means, such, for instance, as pulleys and a belt, or rope-pulleys and a rope, or the like.

The manner of operation of the gear is as follows:

Supposing, the directions of rotation of the shafts a and Rare those indicated by the arrows II and I, the arrow 1. indicating the direction of the drivingshaft and the arrow II indicating the direction of the driven shaftpand supposing further, that the arrow III indicates the direction of rotation of the planet-wheelcarrier and the arrow IV indicates the direction of rotation of the shaft 00 with the'frietion wheel '5.

At a certain distinct number of revolutions of the shaft a the disk 2' is rotated in the direction of the arrow IV with a certain number of revolutions determined by its position relatively to the disk y'. At the same time the worm f is rotated with the same number of revolutions as that of the disk i and its shaft so by the mediation of the transmitting members 9 g g 9 The worm f which meshes with the worm-wheel 6 moves thus slowly around the latter, and as it is firmly connected with the planet-wheel carrier on by the arm (5 and the band m the carrier m is turned in the direction of the arrow III. Owing to this rotation, the number of revolutions of the driven shaft a is reduced to a number or limit determined by the position of the disk 2'. If the number of revolutions of the driving shaft 1) increases, also the shaft a tends to rotate with an increased speed, but as then also the disk 2' is rotated correspondingly quicker, the planet-wheel carrier, too, turns with a greater speed, viz. in the direction of the arrow III and by reason of the action of the disk 2' upon the transmitting members m g g g g 7 (Z m, in consequence of which the number of revolutions of the shaft a is decreased.

It is obvious that variations in the number of revolutions of the shaft 6' are transmitted to the shaft (1. only in a greatly reduced measure. If, for instance, the number of revolutions of the shaft 5 would be doubled, theiirst tendency of the mechanism would be to double the number of revolutions also of the shaft a and of the disks 7' and i, as well as of the transmitting members m g g g g and 7 and as the disk 2' rotates not only with its own shaft m, but also around the shaft (1, the tendency of the retating members is to increase the number of revolutions of the disk 2'. I diminution of the number of revolutions of the shaft 41/.

If, however, the numberof'rerolirtions'of the shaft 6 is diminished, the effect is the reverse. Thus, even a strongly ununiformly running driving shaft 1) will produce a nearly uniform rotation ofthe driven shaft a,if a mechanism of the kind described is inserted b'etweenthe two shafts. The revolutions of the driven shaft may be rendered still more'uniform, to any desired degree, by arranging two or more such gears in a series, as will b clear without entering into the details'of such an arrangement and combination of parts.

I claim:

A planet wheelchange-speed gear, comprising, in combination; a planet-wheel gear composed of two co-axial wheels, tivo planetwheels located oppositely to each other between'said co-aXial wheels and meshing with them and of a planet-wheel carrier loosely rotatablebetween the coaxial wheels; a sta- The result is ationary worm-wheel arranged at the free side of one of the said co-axial wheels; a worm meshing with said Worm-wheel and being supported by the planet-wheel carrier; a shaft ipassing through the worm- Wheel and having the adjacent co-axial wheel secured to it and supporting the planetwheel carrier; another shaft arranged coaxially to the former and having the other co-axial Wheel affixed to it; a friction disk also affixed to said latter shaft atsome distance from the respective co-axial wheel; another friction disk located between'this wheel and the first-mentioned friction disk at right angles to both; a shaft having said other disk secured to it a shaft having the said Worm ailixed to it and extendingtparallelly to the shaft of the last-mentioned disk; and means for transmitting rotary motion from the disk shaft to the Worm shaft, substantially as set forth. r

In witnesswhereof I have hereunto set my hand.

' EDMUND soHRoDER.