US2961881A

US2961881A - Speed changer and reversing means

Info

Publication number: US2961881A
Application number: US775998A
Authority: US
Inventors: Antoci Felix
Original assignee: Individual
Current assignee: Individual
Priority date: 1958-11-24
Filing date: 1958-11-24
Publication date: 1960-11-29
Anticipated expiration: 1977-11-29

Description

Nov. 29, 1960 F. ANTOCI SIPEED CHANGER AND REVERSING MEANS Filed NOV. 24, 1958 A T TO/PNEY Un t d es P ti n 9 2,961,881 7 SPEED CHANGER AND REVERSING MEANS Felix Antoci, 57 E. 175th St., Bronx, NY.

Filed Nov. 24, 1958, Ser. No. 775,998

6 Claims. c1. 74-190 manipulations. I

Another object thereof is to provide a novel and improved speed changerand reversing means of the character mentioned, which includes two shafts, either one of which may be driven at constant speed, while the other is the shaft that is controlled.

A further object thereof is to provide a novel and 7 improved device of the nature set forth, which is simple in construction, reasonable in cost, easy to operate and efiicient in carrying out the purposes for which it is designed.

Other objects and advantages will become this disclosure proceeds.

For the practice of this invention, there are two shafts in' angular non-coplanar relation, both journalled on a frame. A roller of special shape is fixedly carried on one shaft while the second shaft has a first wheel fixed thereon and a collar rotatably journalled thereon. There is a second wheel structure which may be called the intermediate wheel, rotatably mounted on said collar. This intermediate wheel is in constant driving engagement with said first wheel and in driving engagement with said roller at all positions of said intermediate wheel Where its plane intersects said roller. There is an arm extending from said collar and there is a frame component to which said arm is releasably secured at any position of the collar about the second shaft so that the intermediate wheel can be shifted and set to contact any section along the roller.

The roller may be described as the volume generated by revolving any are contained in a semi-circle, about an axis line parallel to the diameter determining such semicircle; the arc being intermediate such lines. In the embodiment illustrated herein, said are is substantially the full semi-circle. The second shaft aforementioned, is so positioned that its longitudinal axis of rotation passes through the center of the circle containing said are.

A more detailed description and the mode of operation will now be set forth.

In the accompanying drawings forming part of this specification, similar characters of reference indicate corresponding parts in all the views.

Fig. 1 is a front view of a speed changer and reversing mechanism embodying the teachings of this invention. This view is partly in section.

Fig. 2 is a side view of Fig. 1.

Figs. 3 and 4 are diagrammatic top plan views which will be used to explain the mode of operation of this device.

In the drawing, the preferred embodiment illustrated, is indicated generally by the numeral 15 and it comprises :a frame denoted generally as 16, on which are journalled apparent as 2,961,881 P tented Nov. 29,19 0

ice

the perpendicularly

related shafts

17 and 18. Here, in the particular embodiment shown, shaft 17 is horizontal and it carries the roller 19 fixed thereon. The shaft 18 is vertical and it carries the bevel wheel 20 fixed thereon and the collar 21 which is rotatably journalled thereon. Close to the shaft 18, the collar 21 has an intermediate wheel structure 22 rotatably mounted on a horizontal axis pin 23. This wheel 22 is of two sections. Section 24 is a beveled wheel which is a little smaller than the section 25. The wheel section 24 is in driving engagement with the wheel 20 in the nature of bevel gears which they can be, although as here shown, they are merely in frictional engagement and their rims may be of suitable material to attain good driving, so that when one turns, the other will turn also. The wheel section 25 is in frictional driving engagement with the roller 19, so that when one turns, the other will also turn. It is evident that upon the turning of either

shaft

17 or 18, the other will turn also while the intermediatewheel 22 is in contact with the roller 19. That is, when the plane of the intermediate wheel does not intersect the roller 19, they are out of engagement.

The roller 19 may be described as the volume generated by revolving any are contained in a semi-circle, about an axis line parallel to the diameter determining such semi-circle so that said are is intermediate said lines. In the embodiment herein shown, said are is substantially the full semi-circle. The axis of the shaft 18 passes through the center of the circle containing the arc of the roller 19; such circle being in a plane perpendicular to the axis of the shaft 18 and said are being intercepted by such plane. It is advisable, but not mandatory, that said plane be common to the axis of the roller 19 and the axis 23 about which the intermediate wheel 22 rotates, which is the condition in the embodiment here illustrated. In any event, the radius of said circle is the distance between the axis of the shaft 18 and the point of contact of the intermediate wheel 22 with the roller 19. Hence, upon rotary movement of the collar 21 on the shaft 18, the intermediate wheel 22 will traverse along the roller 19 and maintain contact therewith from one end of the roller to the other, until said intermediate wheel 22 should go beyond an end of said roller.

The frame has a component 26 which extends upwardly and terminates in a boss 27 in which a socket bearing 28 is rotatably fitted for the upper end of the shaft 18. This bearing extends upwardly out of said boss, where it is threaded to receive a nut 29. There is an arm 30 which extends upwardly from the collar 21 and is connected to said bearing. Here, it is shown integral there with. When the nut 29 is tightened, the position of the collar 21 is fixed and hence the plane of rotation of the intermediate wheel 22 is fixed. A handle knob 31 is made part of the bearing 28, so that upon loosening said nut 29, the collar 21 may be turned to shift the plane of the intermediate wheel 22.

Depending upon the use to which this device is to be put, the roller 19 used, may be one which is any part of the particular one herein illustrated, and for most purposes may be half thereof, which then would be in the nature of a cone having a concave surface lengthwise thereof.

When the roller shaft 17 is driven at constant speed in the setup shown in Figs. 1 and 3, and its direction of rotation is as indicated by the arrow A, then shaft 18 will rotate in the direction shown by the arrow B shown in Fig. 3, and the relative speeds of said shafts will be in the ratio which the diameter of the section of the roller 19 contacted by the intermediate wheel 22, bears to the mean diameter of the wheel 20. Setting said wheel 22 in different planes while it still contacts the roller 19, will alter the speed of the shaft 18. Said wheel 22, it is noted, is between the shaft 18 and one end of the roller 19. To reverse the direction of rotation of the shaft 18, the wheel 22 is shifted from its position of Fig. 3 to that shown in Fig. 4. Now said wheel 22 is between the shaft 18 and the other end 'of the roller 19. The direction of rotation of the roller shaft 17 is the same as before, but the direction of rotation of the shaft 18 is now reversed as indicated by the arrow C. It is to be noted that either of the

shafts

17, 18 may be the one driven at constant speed in the first place. This device works either way, regardless of which of said two shafts is the onechosen to be the one operating at constant'speed.

In the practice of this invention, it is to be noted that in relation to the axis line of the shaft 18, the axis line of the roller shaft 17 may be in any position and direction so long that said axes are noncoplanar. That is, the axis line of the shaft 17 may be higher or lower along the intermediate wheel 22 than is shown in the illustrated embodiment herein, and in each position of such roller shaft, it may have any slant or direction so long that the axes of the shafts are non-coplanar. In other words, the roller 19 may be in any position where between its ends, it is in contact with the surface of the imaginary sphere of radius R, the axis of the shaft 18 passing through the center of such sphere, and the axes of the

shafts

17 and 18 are noncoplanar.

This invention is capable of numerous forms and various applications without departing from the essential features herein disclosed. It is therefore intended and desired that the embodiment shown herein shall be deemed illustrative and not restrictive and that the patent shall cover all patentable novelty herein set forth; reference being had to the following claims rather than to the specific description herein to indicate the scope of this invention.

Iclaim:

1. In a speed changer and reversing device of the character described, a frame, a first shaft and a second shaft in non-coplanar relation, both journalled on said frame, a roller secured on the first shaft; said roller being the form generated by revolving any are contained in a semi-circle about an axis line in the plane of said semi circle, outside said semi-circle and parallel to the diameter line determining said semi-circle where in such plane, said are is intermediate said lines; the mentioned axis line being that of the first shaft; the axis line of the second shaft, passing through the center of the circle 4 of which said semi-circle is a part, a collar rotatably fitted on the second shaft, a first wheel rotatably mounted on said collar about an axis in angular relation with the axis of the second shaft; said collar being turnable on the second shaft so that said first wheel may be between the second shaft and each end of said roller respectively and able to transverse a predetermined part of the roller along the length of'said roller and a second wheel secured on the second shaft and constantly engaging the first wheel so that upon rotation of one of said wheels, the other will be rotated thereby; said first wheel when positioned in any plane intersecting said roller, being in contact with said roller and engaging same so that upon rotation of any one of the group 5. A device as defined in claim 1, including a member extending from the collar along the second shaft and,

providing a bearing for said shaft; said shaft being rotatably mounted in such bearing and a component extending from the frame; said bearing being rotatably mounted on said component and means to releasably secure said bearing to said component when the collar is in any of a multiplicity of positions with respect to the frame.

6. A device as defined in claim 5, wherein said hearing is through a borein said frame component and extends outwardly of such bore; the outward portion of said bearing being externally threaded and a nut threadedly engaged on said threaded portion and constituting the means for releasably securing said bearing I to said frame component.

References Cited in the file of this patent UNITED STATES PATENTS 1,050,351 Dean Jan. 14, 1913 2,037,356 Von Schutz Apr. 14, 1936 2,809,529 Ondeck Oct. 15, 1957 2,842,973 Crowe July 15, 1958 l MW...