US1571007A - Mechanical movement - Google Patents

Description

Jan. 26, 1926. 1,571,007

l A, HAYES MECHANICALMOYEMENT Original Filed April. 18, 1923 A I berfHayeJ Patented Jan. 26, 1926,

UNl'l'E STATES PATENT OFFlCE.

ALBERT HAYES, OF NEW YORK; N. Y., ASSIGNOR 'IO GEORGE E. MCKAY, F NEW'ARK, NEW JERSEY; JAMES J. DOYLE ADMINISTRATOR 013 GEORGE F. MCKAY, DECEASED.

MECHANICAL MOVEMENT.

Application filed April 18, 1923, Serial No. 632,901. Renewed December 19, 1925.

To allwhom it may concern: the driven shaft 5. The driven shaft is Be it known that I, ALBERT HAYES, a citimounted to rotate in a plane at right angles Zen of the United States residing in the city to the plane of the driving shaft and extends of New York, county of New York, and across the face of the cam disc on a line near 55 a State of New York, have invented certain its periphery so that the teeth of the pinion new and useful Improvements in Meohani- 1 are in position to be engaged by the cam cal Movements, of which the following is a ridges formed on the face of the disc. specification, reference being had to the ac- On the cam disc are formed cam ridges 6 companying drawings, forming a part thereand 7 having between them a groove 8 a-dapt- 10 f ed to receive a tooth 9 of the pinion 4. The My invention relates to mechanical movecam ridges 6 and 7 are concentric and are ments and has for its object to provide a formed on arcs of a circle the centre of device by which bodies may be given rotary which is on line l010 passing through the motion of oscillation first in one direction axis of the driving shaft 1 but at a consider- 65 and then in the other overcoming the difliable distance from such axis so that these culties due to inertia. A further object of cam ridges are eccentric to the axis of the the invention is to provide a device for this driving shaft. The cam ridge 6 may form purpose which will be simple and inexpena complete or nearly complete circle though sive in construction and will be effective for the operative position of it is somewhat less 70 the purpose intended and not liable to inthan a half circle. The cam ridge 7 is conjury siderably less in extent than a complete cir-v Where the body to be oscillated is of relacle and it gradually diminishes in height totively light Weight its oscillation either with wards its ends which terminate in the plane or without a step forward in one direction is of the face of the disc. 75 a comparatively simple matter and devices At the left, as shown in Figure 1, of the for this purpose which are effective for the cam ridge 6 and concentric therewithis a oscillation of such bodies are known. But cam ridge 11 which is separated from cam where the body to be oscillated is very heavy ridge 6 by a groove adapted to receive a it acquires by rotation in one direction a tooth 9 of the pinion 1. This cam ridge 11 80 momentum which cannot be overcome by dehas its end 13 somewhat below a line drawn vices now in use without strain or breakat right angles to the line 1010 through the ago. By the device of my present invention center from which the arcs of cam ridges this difliculty is overcome and the device 6 and 7 are struck and hasits-upper end herein shown and described is adapted for 14 above the plane of the axis of the drivoscillating bodies whether heavy or of light ing shaft but a considerable distance from weight without shock or damage of injury the line 1010. This cam ridge diminishes to the body itself or to the oscillatory deinheight to its ends 13 and l t to the plane vice. ofthe face of the disc.

W'ith the objects above indicated and other Outside the cam ridge 11 and concentric 40 objects hereinafter described in view my inwith it isa-ca-m ridge 16 separated from cam vention consistsin the construction and comridge 11 by a groove '19 adapted to receive a bination of elements hereinafter described tooth 9 of the pinion 4. This eamrridge is and claimed. wholly above a line drawn at right angles Referring to the drawings: to line 1010 passing through the axis of 95 Figure 1 is a plan view of the cam disc the driving shaft, its end 17 being slightly of my invention. above such a line and its end 18 being sub- Figure 2 is a cross sectional view of the stantially on line 1010. At its ends '17 and disc and the pinion driven by it. 18 this cam ridge diminishes in height to In the drawings 1 indicates the driving merge with the face of the disc. 100

shaft and .3 indicates a cam disc carried on Outside the cam ridge 16, parallel with the driving shaft. it indicates a pinion on it and separatedtherefrom by a groove 23,

adapted to receive a teeth 9 of the pinion 4, is a cam ridge 20 the end 21 of which is about in line with the end 14 of the cam ridge 11 on a line passing through the center from which the arcs of cam ridges 6 and 7 are struck. At the end 21 this cam ridge diminishes in height to merge with the face of the disc. The other end 22 of this cam ridge is to the right of the line 10-10 and is of full height.

There are thus to the left of the line 10-10, as shown .in Figure 1, live cam ridges, 7, 6, 11, 16 and 20.

To the right of line 10-10 outside of cam ridge 6 and concentric therewith, is a cam ridge 26 separated from cam ridge 6 by a groove 27 adapted to receive a tooth 9 of the pinion 4;. This cam ridge 26 has its lower end 28 about on a line at right angles to line 10-10 passing through the cam ridge 6 where it is crossed by line 10-10. The upper end 29 is considerably above the axis of the driving shaft and is about on a line at right angles to line 10-10 passing through the end 14- of cam ridge 11. This cam ridge diminishes at its ends 28 and 29 to merge with the plane of the face of the disc.

Outside the cam ridge 26 and concentric therewith is a cam ridge 30 separated from cam ridge 26 by a groove 31 adapted to re ceive a tooth 9 of the pinion 41. The lower end 33 of this cam ridge is about on a line at right angles to line 10-10 passing through the axis of the driving shaft. At its upper end 3 1 this cam ridge is of full height and meets and merges with the end 22 of the cam ridge 20 on a line 25-25 which is at an angle ot about 25 degrees with line 10-10.

There are thus to the right of line 10,- 10, as shown in Figure 1, four cam ridges 7 6, 26 and 30.

As the cam disc is rotated in clock-wise direction starting with a tooth 9 in groove 8 on line 10-10 the tooth is held against rotation until, by reason of the eccentricity of the are of cam ridges 6 and 7, it is gradually swung inward rotating the pinion slowly. As the end 28 0'5 cam ridge 26 comes in contact with the outside of an adjacent teeth 9 it will force it inward rotating the pinion, the tooth in the groove 8 swinging inward past the end of cam ridge 7. By reason of its eccentricity the cam ridge 26 arises the tooth 9 en aged by it to swing inward rapidly thus rotating the pinion. As the end 33 of cam ridge comes in contact with the next adjacent tooth 9 it causes the pinion to be further rotated, by reason of its eccentricity. As the portion of this cam ridge 30 near its upper end 3 1- comes into contact with this third tooth it checks its inward swing and gradually brings the pinion to a complete stop.

As the disc continues to rotate the portion of cam ridge 20 near the end 22, at first, holds the tooth against rotating movement and then as the end 18 of cam ridge 16 comes in contact with this tooth the third tooth is swung outward rotating the pinion in reverse direction.

As the disc continues its rotation the second tooth is picked up by the end 1% of cam ridge 11 and the pinion is further rotated in the reverse direction. Further rotation of the disc brings the upper end of cam ridge 6 into contact with the first tooth swinging it outward and bringing the next adjacent tooth into the groove 8. The cam ridge 6 at first acts to continue the outward swing of the tooth engaged by it and thus to continue the rotation of the pinion. As the disc is brought around to its original position the first tooth which, at starting, was in groove 8, will be outside cam ridge 6 the pinion being thus rotated one step further in reverse than it was in the original direction and the pinion will be gradually brought to a full stop as the disc reaches this original position.

All of the cam ridges are on arcs struck from centers eccentric to the axis of the driving shaft. The main portion of each of the cam ridges is formed on an are though its ends need not be in the line of the arc, except that cam ridges 20 and 30 as they approach their meeting point are not quite on the lines of arcs, being somewhat cut away on their inner "faces to avoid too abrupt change -from the are or one to the arc of the other. 4

The cam ridges are termed with broad. bases so as to give great strength in order to overcome without risk or injury, the inertia when a heavy body is to be oscillated and to bring it to a full stop and give it reverse movement without shock. The eccentricity of the cam ridges makes it possible to etlect the oscillation of very heavy bodies by the variation in speed of rotation the disc serving by reason of this eccentricity of the cam ridges both as a rotating means and also as a brake.

The disc with its cam ridges may be readily formed by casting without the necessity for machinin In operation the drivii'ig shaft may be rotated continuously in either direction its continuous rotary motion being converted into oscillating movement.

By the construction above described the starting, slowing, stopping and restarting oil the pinion 4 is effected by the single operating disc the strain on which is in the direct line through the point of contact of a tooth 9 with the disc and the axis of rotation of the disc. The resistance to the strain of these operations may be made amply suiticient to overcome the inertia of the body to ill ice

be oscillated however heavy it may be, by making the thickness of the disc such as to give the resistance required.

Having thus described my invention what I claim is:

1. In amechal'lical movement for converting continuous rotary motion into oscillating motion, a driving shaft, a driven shaft at right angles to the driving shaft and provided with a pinion, and a cam disc carried by the driving shaft having cam ridges on its face adapted to engage the teeth of the pinion, the cam ridges being formed on arcs concentric one with the other but eccentric to the axis of rotation of the disc.

2. In a mechanical movement for converting continuous rotary motion into oscillating motion, a driving shaft, a driven shaft at right angles to the driving shaft and provided with a pinion, and a cam disc carried by the driving shaft having cam ridges on its face adapted to engage the teeth of the pinion, the cam ridges being formed on arcs concentric one with the other but eccentric to the axis of rotation of the disc, the number of cam ridges on one side of the median line of the disc being greater in number than the cam ridges on the other side.

3. In a mechanical movement for converting continuous rotary motion into oscillating motion, a driving shaft, a driving shaft at right angles to the driving shaft and provided with a pinion, and a cam disc carried by the driving shaft having cam ridges on its face adapted to engage the teeth of the pinion, the cam ridges being formed on arcs concentric one with the other but eccentric to the axis of rotation of the disc, two of said cam ridges extending equally on opposite sides of the median line whereby the driven shaft is slowed, brought to rest and gradually given reverse rotation without shock, the center points of the outer cam ridges at opposite point-s being out of line.

4i. In a mechanical movement for converting continuous rotary motion into oscillating motion, a driving shaft, a driven shaft at right angles to the driving shaft and provided with a pinion, and a cam disc carried by the driving shaft having cam ridges on its face adapted to engage the teeth of the pinion, the cam ridges being formed on arcs parallel one with the other but eccentric to the axis of rotation of the disc, the number of cam ridges on one side of the median line of the disc being greater in number than the cam ridges on the other side, two of said cam ridges extending equally on opposite sides of the median line whereby the driven shaft is slowed, brought to rest and gradually given reverse rotation without shock, the center points of the outer cam ridges at opposite points being out of line.

In testimony whereof I hereunto aflix my signature.

ALBERT HAYES.

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