US1550505A - Power transmission - Google Patents

Description

G. CQNSTANTINESCO POWER TRANSMI SS I 0N Original Filed March 24, 1924 [iv/M75 6i GonJZanZWcq Patented Aug. 18,1925.

UNITE STATES PATENT OFFICE.

GEORGE CONSTANTINESCO, OF WEYIBRIDGE, ENGLAND.

POWER TRANSMISSION.

Original application filed March 24, 1924, Serial No. 701,589. Divided and this application. filed April 6,

To all; whom it may concern:

lie it known that I, Gnoncn CONSTANTI- nasco, a subject of the King of Great Brit-- ain, residing at Carmen Sylva, Beechwood I Avenue, Oatlands Park. \Veybridge, in the county of Surrey, England, have invented a new and useful Improvementin Power Transmission, of :which thefollowing is a specification.

This application forms a division of U. 8. application Serial No. 701,539.

In my prior specification No. 7 01,539, cor

responding as regards part of its subject matter to my British patent specification No. 218,400, a method is described of setting up oscillations by the gyrations of an unbalanced mass set in motion by a prime mover. This mass is coupled with a second masses, or such part of this motion as ,is'

relevant, is zero; if the torque is infinite, the motion is a maximum.

In some cases the second component may be divided into others having a period of twice, four times or some positive integral power of two times that of the gyrations aforesaid.

According to my present invention the two masses of my former invention are replaced by a single mass which combines the functions of both.

In the accompanyingdrawings, Figure 1 shows a form of the invention in which a unidirectional torque is obtained by the use of four ratchets; Figure 2 is a section along the line AA, Figure 1, and Figure 3 shows a modification in which two ratchets only are used.

In the form of. the invention shown in Figures 1 and 2, the shaft 80 of a prime mover is connected by a double Hookes or Cardan joint 82, 81, 84, or by some other flexible coupling to the centre 85 of a fly wheel 83, which is supported at some point 1925. Serial No. 21,106.

87 other than its centre by links 88 and 101.

turn pivoted about the axis of the rotor 100.

The oscillating links 94 and 95 carry pawls 06 and 97 which act upon the rotor as shown in the drawing. The other link 101 is connected to one end of a lever 102 which turns about a: fixed pivot 103. Arms 105 and 106 are pivoted to the other end 104 of the lever, and these actuate arms 108, 107, and pawls 110, 100, in a manner similar to that above stated. Part of the duty of the block 80 and of the lever 102 is to give stability to the motion. The mean angle between the rods 88 and 101 is about 90 degrees. This arrangement. produces almost continuous rotation of the rotor, which receives four impulses for each gyration of the wheel 83, one by each pawl, and the impulses differ in phase by about 90 degrees.

The action will be made clear by considering limiting cases of the motion. If the torque on the rotor isinfinite the pin 87 is fixed in space and the whole motion consists of the gyration of the wheel 83 about the point 87 as a fixed point. If, on the contrary, the torque is zero, the motion of the point 87 is perfectly free. The wheel now rotates about its centre 85 as a fixed point in space. In intermediate cases it is evident that the motion is split between two components, one consisting in the motion of the unidirectional devices, and the other consisting in the motion of the centre of the wheel.

Figure 3 shows a. similar but somewhat simpler device. The wheel or disk 174 corresponds to the wheel 83 of the previous figures, and the links 173 and 175 correspond to 101 and 88. These links are connected to links 172 and 177 pivoted respectively to fixed points 171 and-178. The links 172 and 17 7 give stability to the motion. Oscillating links 36 and 37 pivoted about the axis of the rotor carry driving pawls and are connected to the common pivot 176 of the p links 17 5 and 177. The action is similar to that already described in connection with figures 1 and 2.

What I claim is 1. An automatic power gear in which power is transmitted from a prime mover to a shaft rotating under varying torque or speed, comprising in combination a pair of levers pivoted to fixed points, links connecting said levers to a common axis, a heavy wheel fixed eccentrically on the said axis, a crank on said axis, the pin of which crank is in,line with the centre of the wheel, a first motion shaft, a flexible coupling connecting the said first motion shaft with the pin of the said crank, a rotor shaft, and unidirectional driving devices connected to the said levers and actuating the said rotor shaft.

I 2. An automatic power gear as claimed in the preceding claim in which the unidirectional driving devices comprise two pairs of links, the members of each pair respectively being pivoted to the said levers, and actuating pawls which impart two impulses to the said rotor shaft at each oscillation of the lever to which they are connected.

In testimony that I claim the foregoing as my invention, I have signed my name this twentieth day of March, 1925.

GEORGE CONSTANTINESCO.

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