US841443A - Mechanical movement. - Google Patents

Description

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vIHNUHFI llummnmummnu lullin No. 841,443. PATENTED J'AN.'15, 1907. F. H. RICHARDS.. MECHANICAL MOVEMENT.

APPLICATION FILED APR.19,1900.

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lllNl minas-.ses @n w d N s @M 7 ber, the-character of whichmovements rela- TED srntrns FRANCIS Ii. RICHARDS. or HARTFORD, CONNECTICUT.

MECHANICAL MOVEMENT..

No. 841,443. I

Specification of Letters Patent.

Patented Jan. 15, 1907.

Application led April 19. 1900. Serial No. 13.470.

To all whom, it may con/cern;

Beit known that I, FRANCIS H. RICHARDS,

'a citizen of the United States, residing at a movement-transmitter, the particular functionof which is not only to serve as an intermediate between the driving and driven members of the mechanism, but to cause the movement of the driven member to be of a variable nature relative to that of the drivingmemben the transmitter being under the control of an I actuator, which may be operatively connected with either the driving member or the driven member or may constitute an factive element of some other mechanism..

In ordei'clearly to illustrate vmy invention in the form of a self-contained mechanism of comparatively simple construction` and to represent an embodiment thereofin its bro ader aspects as regards the possible variability in the character ofthe motion impartible to the driven'member, the transmitter-actuator is t 3 5 Arepresented intlie'accompanying drawings as being a cam, which may be mounted, as shown, directly on what I shall hereinafter designate as the driving member of the device, although the relation of the driving and driven-members as t6 their respective functions may be reversed. The driving member is shown'as a shaft the movement of which is transferred through a series of gears to a Itransmitter and by it to another shaft (designated herein as the ."dr'iveni member) in such a manner that each com lete rotation of the driving member will prodiuce arpredetermined variable movement of the driven memtive to that' of the driving member depends upon the coniguration ofthe. transmitteractuator.)

p In the drawlngs accompanyingand forming part of this specification, Figure 1 is a sectional side elevation; of a'mechanism embodying my invention. vFig. 2 is asection of` the same on line 2 2, Fig. 1. Fig-3 is a simimanner in which the driven member is operated from the driving member and shows the resultant line `of such movement.

' Similarcharacters designate like parts in the different figures of the drawings.

In the drawings, 10 designates the driving member or shaft, journaled in bearings 11 and 12 in' the-uprights 13 and 14, respectively, and having mounted at one end therebe imparted from any'convenient source Aof power by a belt. (Not shown.)

Journaled in bearings 16 and 17 in uprights 13 and 14, respectively, is a shaft 18, which' in this case constitutes the driven member ofthe mechanism and supports a gear 19, in mesh with a gear 20, conveniently made of the 'same size as the gear 19 and mounted on the shaft 10, -above mentioned. The. gear 19 is secured to or forms apart of the sleeve 20', whichis loosely held u on the 'shaft 18 and is vprovided near one en thereof withgear-teeth 21, forming a pinion the rotary movement of which is transferred through a differential train comprising a .transmitter or intermediate 22 and an internal gear 23 to the shaft 18, the latter gear being keyed to the shaft 18 and in .the present embodiment of such a size relative to the pinion 21 as to have in comparison thereto a ratio of four to one, so that four rotations of the pinion will be required to cause one rotation ofthe internal gear 23.

In order to `produce a variable movement of the internal gear 23, the intermediate 22, constituting, as previouslystated, one element of a differential train, is mounted to swing to and fro in the annular-s ace between the pinion 21 and the interna gear 23, being journaled in the present construction upon a stud 24, secured to an overhanging arm 25, fastened by screws 26 to a rocker 27, said rocker bein adapted for oscillation about the axis of t e shaft 18, and thus being operable for lcausing an advancing and retreating movement of the stud 24', and with it the intermediate 22, as will be readily understood.

It is evident that when the axis of the intermediate 22 is held stationary the internal or tooth. When the airis of saidintermediate', however, is caused to follow an arcear 23 will be rotated bythe pinion 21 tooth lar view representing the parts in another position, and Fig. 4 is a chart illustrating the of a pulley 15to which rotary motion may IOO , shaped path around the axis of shaft 18, an

diate the rocker 27, above mentioned, is provided, in ,the present organization of constructive details, with arms 28 and 29, the former of which carries a roller 30, journaled on a stud 31, and is in engagement with an actuator or cam, such as 32 while the arm 29 has a stud 33, carrying a roller 34 in engagement with a cam, such as 35, said cams being preferably so constructed and coacting in such a manner that while they serve to oscillate the differential train to and fro each also performs the function of preserving the contact between the other cam and its roller during eachrotation of the shaft 10.

Each of the studs 31 and 33 may have an eccentric portion whereby the roller thereon i may be adjusted into close contact with its 'particular cam as for taking up wear and also, if necessary, and by a proper manipulationof both eccentric ortions for slightly adjusting the position ofj the rocker 27, and hence the position of the intermediate 22. The studs 31 and 33 are also advantageously adjustably held on the arms 28 and ,29, the latter having their ends divided, as clearly shown in Figs. 1, 2, and `3, said divided ends being drawn together to bind the studs by screws 36 and 37, respectively.

By the employment of two cams, as described, a ositively-controlled movement is obtained, t e driven member being at all times under absolute and perfect control, whereby any overthrow of the same is prevented.

The movement of the rocker is of course controlled bythe shape of the rocker-actuator, and bymeans of an actuator of the proper configuration the driven member may have imparted to it intermittent movements of a variable nature, as may be required in any particular case, while each rotation ofthe driving member will result in the advancement of the driven member by an amount equal to one-fourth of a rotation, provided the ratio of gearing, as above described and shown in the drawings, is maintained.

In the chart, (shown in Fig. 4,) which is a velocity and movement diagram for a certain definite coniguration of cam-surfaces chosen for the purpose of illustration and description, the horizontal base-line is divided to represent the number of 4degrees of rotation ofthe driving member or of the pinion 21, which is driven from the driving member by one-to-one gearing, and therefore makes one rotation for each rotation of the drivingshaft. The internal gear 23 is driven from this pinion by the transmitter or intermediate 22, but at aratio of one to four-in other words, for each movement of three hundred and sixty degrees of the pinion there will here he only ninety degrees of movement of the internal gear. 1t is therefore evident that while, as represented in the chart, the base-line is divided to indicate three hundred and sixty degrees (representing one rotation of the pinion) the vertical line at one end thereof should represent the corresponding ninety-degree movement of the internal gear, and the line indicating the resultant angular movement of the internal gear during one rotation of the pinion shows that the accelerated movement of the internal gear takes place only7 during certain periods of the rotation of the pinion, the extent and location of such periods being determined graphically, experimentally, or in any other desired manner and the results plotted on the diagrani---as, for instance, as follows: Reading 'from the loft end of the base-line the inion-advances one hundred and thirty-eight degrees, and during such travel the internal gear will have, as the device is here proportioned, an angular movement of forty-eight degrees, (to `be read on a vertical line.) On the succeeding movement of the pinion between the lastmentioned p'oint on the horizontal line and a determined point, here found to be the degree'- point H253, the resultant line of movement runs in parallelism with the base-line and without any rise vertically, thereby indicating that between the degree- points 138 and 253 no advancing angular movement of the internal gear takes place, or, in other words, that said standstill. Again, starting from the lastmentioned point 253 on the horizontal line and up to the last degree of rotation of the inion the resultant line indicates that a furt 1er advancingmovement of the internal gear takes place, the amount of such angular movement being again read on the vertical line between the degree-marks 48 and l90 thereof, the proportional movements of the pinion and the internal gear, respectively, being thus clearly shown in the chart. It will be evident, since the actuator-cams have now made one complete rotation, that if the movement of the pinion is continued for another one hundred and thirty-eight degrees a proportionate movement of the internal gear, and consequently the same rlse of the resultant line that is shown in the beginning of the diagram, will result, the second rotation of the pinion affording a line on the velocity and movement diagram for the angular movement of the internal gear through the next ninety degrees identical with that already described, which relative movement will be repeated through the successive rotations ofthe driving-pinion.

The horizontal portion of the resultant line is due to the sWin g of the transmitter or intermediate 22 boilly around the axis of gear is substantially at ay IOO ITO

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the shaft 18, which action may be explained -as follows: When the intermediate is held with its axis stationary, it is evident that during a regular rotary movement 'of the pinion for three hundred and sixty degrees a regular rotary movement 'of the internal gear for ninety degrees will take place, the resultant rising line of which of course be straight, as indicated by the dotted line zoV on the chart. On the other hand, it is evident that when the intermediate is permitted to travel freely and no obstacle is presented toits revolution around the axis of the shaft 18 the rotation of the latter .will have no according to the shape of the cam operating on said rocker and intermediate, aconstant advancing rotary motion of the pinion may betransformed into an irregular, advancing', or even into a retreating movement of the internal gear, it being evident, however, that the resultant ratio omovementfo'f pinion and internal gear under the given relations will always be the same-that is, a rotation of three hundred and sixtydegrees of the pinion will produce a rotation of ninety degrees ofthe internal gear. v

Having described my invention, I claiim-T 1. The combination a and a driven member, relatively fixed supports on .which said members iare mounted with their respective axes of rot-ation disposed substantially parallel to each other, an intermediate for transmitting motion to the driven member, means between said intermediate and driving member for transmitting motion to the intermediate, and cam-actuated means controlled by the driving member for moving the intermediate to and fro while in its operative position.

2. The combination ofa and av driven member, relatively fixed supports on which said members are mounted with their respective axes of rotation ydisposed substantially parallel to each other, an intermediate in mesh with the driven member, gearing betweenv said intermediate' and driving member for imparting motionto said intermediate, cam mechanism mounted on said drivin member, and means actuated thereby for moving -the intermediate to and fro.

' The combination of. a driving and a driven member, relatively iixed supports on which said members are mounted with their respective axes of rotation disposed substantia l y"parallel to each other, an intermediate driven from the member and through member, and cam-controlled mechanism for which motion isk transmitted to the driven moving the intermediate to and fro in a plane parallel with the plane of movement of the driven member. Y

@The Combination of adrieigfand a driven member, relatively nxed supports on.

ing the intermediate to and fro in the plane of movement imparted to the driven member.

former, and a cam-actuated rocker for mov- ^5.`Tl1e cbmbinati'on of a driving-gear and a driven gear having their respective axes of rotation disposed substantially parallel to veach other, relatively Xed supports for said gears, an intermediate driven from the driv. ing-gear and in engagement with the driven gear, and cam-actuated means controlled by the driving-gear Jfor moving the intermediate to and fro. v l,

6. Thecombination of a driving-shaft, a

gear fixed thereto, a driven shaft, anlinternalv .l

gear fast thereon, a gear in mesh with the gear on the driving-shaft a pinion carried thereby, an4 intermediate in mesh with said pinion vand said driven gear, a rocker upon which the intermediate-is mounted,` and an actuator for oscillating the rocker toand iro.

7. The combination, with driving and driven members and relatively fixed supports in which said members are mounted, of an intermediate between said Y members; means for imparting motion to 'sald lnterme- ICO diate a rocker supporting said intermediate and movable about the aXis of one of said members; and a pair of actuators controlling the movements of the rocker in opposite l'di' rections.`

ber, a gear mounted thereon, a driven mem- 'ber, and a gear mounted thereon, of an intermediate between said gears; gearing in' mesh with said intermediate and drivmg member for imparting motion to the intermediatea rocker supporting'said intermediate and pivotedconcentrically with\one 'of sald mem- `means for imparting motion to said interme' diate from said driving' member, 'a rocker supporting said intermediate and having a pair of actuating-arms; and means forjengaging said arms at opposite sides andgposi- 8. The combination, .with a driving mem.-

tively controlling the movement of the -v rocker.

' 10.` The combination, with a drivingmembena-nd fwithla .driven member; of an intermedi-ate. between-said members; means .for impartmg motion tov said intermediate from 'said driving member, a rocker supporting .driving memberand engaging said arms for positively gloverning--the movement ot said rocker-ata points therein- 12; Thecombination with a driving member-and adriven member and relatively fixed supportsm which` the: driver and the driven member'y are mounted., ot an intermediate driven from said driving member; a rocker y supporting said: intermediate and having a pair ot armsdisposedf on? opposite sides of the driving member; a pair 'ofcam-rollers mountedf onsaid arms; and a2 pair of cams carried bythe-driving member andi engaging with said rollers tonactuating said rocker and said intermediatef.

13;y The combination with a .driving mem.- ber and adriven-y member, of anintermediate deriven-from ,said driving member; a rocker supporting said intermediate and having a pair of arms disposedon opposite-sides of the driving member; a,- pairoii'v adjustable camrollers. mountedxon said: arms; and a pair Iof cams carried by the driving member and engaging withA said: rollers for actuatingy said 'rocker andi said` intermediate.

14. The combination with a driving member fanda.- driven member, of. an intermediate driven remsaidedniving'V member; a rocker supporting said-intermediate and having a pai-r 'of arms disposedf on;- opposite sides of the drivingmemb'er; a.- pair offcam-rollers eccentrically'mounted 'on said arms; anda pair'of` cams carriedl by the-'driving member and engag' g -with saids :rollers for actuating said rocker andi said intermediate;

' 15. The combination With'a driving-shaft, a' gear-Wheel fast upon it, of a driven shaft, a larger'gear-.Wheel fast upon it, av gear in mesh with thegear .onthe'drivingshaf-t and carrying-'a pinion,and a-gear-between the-said` pinion and. the-gearj on .thedriven shaft, and means to rotate the said.y gearabout the axis of 'said pinion;

16=. The combination :of a,4 driving and a driven member, agear fast oneach, one ot i said gearsy having greater diameter than' the other, a gear of a diameter equal to' that of the smaller of said gears and in mesh there-I opposite sides of said cams and carried bytheother of said members.

18. The combination with a driving and adriven member, of a pair of cams carried by one of said members, said cams having oppositely-disposed camfaces, a pair ofarms disposed on opposite sides of sa'idcams and carried by the other of said members, and rollers eccentrically mounted on said arms for en'- gag'ing said cams` 19. The combination With a driving anda driven member, of a pair of cams carried: sby one of them, a pair 'of arms carried by theother of them and disposedl on opposite sides of said cams, and adjustable rolls: on said arms for contacting With the-cams.

20. In a mechanical movement the combination with a driven shaft of an internal gear fast thereon, aA pinion loose on said shat, a gear-Wheel in mesh With said pinion and said' internal gear, a gear-wheel fast with said pinion, a driving-shaft, a gear carried thereby and in mesh With said last-mentioned geanapair of cams upon said driving-shaft, and means connected -to said intermediate gear and controlled by said cams for rocking the same about said pinion.

21. The combination of a driving-gear andi al driven gear, a pair otshafts supported in parallelism and each carrying one of said gears, an intermediate driven from the driving gear and in engagement with the driven gear, a rocker on Whlch said intermediate is mounted, and an actuator comprising cam mechanism carried by the driving-shaft for oscillating the rocker to and fro.

22. The combination cfa driving-gear and a driven gear, a pair of shafts supported inparallelism and each carrying one-v of said gears, an intermediate driven Jfrom the driving-gear and in engagement with the driven gear', a rocker on which said intermediatel is 'mounted, and an actuator comprising cam mechanism carried by the driving-shaft for oscillating the rocker to and fro and formed to alternately neutralize the drive and accelerate the same.

23. The combination of a driving and1 a driven shaft, a gear carried by each of said shafts, an intermediate between said gears and in mesh with one of them and driven from the other, a rocker supporting said intermediate and movable about the axis of yone of said shafts, and an actuator carried by IOO IIO

the other of said shafts and comprising cam mechanism for controlling the movements of said rocker.

24. The combination of a driving-shaft, a driven shaft in parallelism therewith, a gear mounted on each of said shafts, a gear in mesh with the driving-gear and a gear rotatable therewith, an intermediate inv mesh with said last-mentioned gear and with the driven gear, a rocker, and cam mechanism carried by the driving-shaft for actuating said rocker.

25. The combination of a driving-shaft, a driven shaft in parallelism therewith, a gear mounted on each of said shafts, a gear in mesh with the driving-gear and a gear rotatable therewith, an intermediate in mesh with said last-mentioned gear and with the driven gear, a rocker movable on the driven shaft, and cam mechanism carried Iby the driving-shaft for actuatingsaid rocker.

v26. The combination of a driving-shaft, a driven shaft in parallelism therewith, a gear mounted on each of said shafts, a gear in mesh with .the driving-gear and a gear rotatable therewith, ,an intermediate in vmesh with said last-mentioned gear and with the driven gear, a rocker supported in axial alinement with said pair of rotatable gears, and cam mechanism carried by the di iving-shaft for actuating said rocker.

27. The combination of a driving-shaft, a driven shaft in parallelism therewith, a gear carried by each of said shafts, a pinion mounted on the driven shaft, a gearfor transmitting motion from said driving-gear to said pinion, an intermediate for transmitting motion from said pinion to said driven gear, means for rolling the transmitter back and forth over said lpinion while in mesh therewith and comprising a rocker and cam mechanism, the latter carried by the driving-shalt.

28. The combination of a driving-gear and a driven gear supported with their axes in parallelism, an intermediate driven from the driving-gear and in mesh with the driven gear, a rocker carrying said intermediate, and cam mechanism supported in axial alinement with the driving-gear for actuating said rocker. l

-29. The combination of a driving-gear and a driven gear supported with their. axesin parallelism, an intermediate driven from the driving-gear and in mesh with the driven gear, a rocker carrying said intermediate and supported in axial alinement with the driven gear, and cam mechanism supported in axial alinement with the driving-gear for actuating said rocker.

The combination with a driving and a driven shaft, of an intermediate transmission-train, comprising a web secured to the driven shaft and carrying an internal gear, a pair of cams mounted on the driving-shaft and having oppositely-disposed faces, apinion meshing with said internal gear, a gear in -mesh with said pinion, a gear rotatable with said last gear, a gear-wheel fast on the driving-shaft and meshing therewith, and a rocker having a pair of cam-engaging faces in engagement respectively with said cam-faces and actuated by one of these and limited in its free movement by the other and carrying said pinion.

FRANCIS H. RICHARDS.` Witnesses:

C. A. WEED,

CHAs. F. SCHMELZ.

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