US1015986A - Speed-changing mechanism. - Google Patents

Description

H. L. BEELER.

SPEED CHANGING MECHANISM.

APPLICATION FILED SEPT. 25, 1911.

1,015,986, Patented Jan. 30, 1912.

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H. L. BEELER.

SPEED CHANGING MECHANISM.

APPLICATION FILED SEPT. 25, 1911.

1,015,986. Patented 32111.30, 1912..

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HERBERT L. BEELER, F CINCINNATI, OHIO, ASSIGNOR TO THE JOHN B. MORRIS MACHINE TOOL COMPANY, GE CINCINNATI, OHIO, A CORPORATION OF OHIO.

SPEED-CHANGING DIECHANISM.

Application filed September 25,1911.

To all whom it may concern:

Be it known that I, 'HERBERT L. BnnLEn,

a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Speed-0hanging Mechanism, of which the following is a specification.

It is the object of my invention to provide novel speed changing mechanism capable of a great variety of changes by mechanisin arranged in' compact form; further obtained, and the invention 3 which may be suitably secured to to provide novel mechanism by which a pluranges may be will be readily understood from the following description and claims. and from the drawings, in which latter:

Figure 1 is a plan view of my improved device, with the frame and the inclosing casings partly broken away and one of the operating handles shown in axial section for better illustration of parts. Fig. 2 is a front elevation of the same. Fig. 3 is a rality of multiples of speed vertical section of the same on the line 33 of Fig. l, the operating handle for sliding the tumbler-gear being also shown in axial section for better illustration of parts. Fig. 4 is a. vertical section of my improved device taken on the line l4 of Fig. 1. Fig. 5 is'a detail taken on the line 55 of Fig. 1. Fig. 6 is an end elevation 01" my improved device; and, Fig. 7 is a diagrammatic representation of the same with the gears laid out in plane.

My invention is illustrated as employed.

for the purpose of changing the speeds of rotation of the lead-screw and the feed-rod, for instance, in a metal turning lathe, the lead-screw being shown broken away at 11, the feed-rod being shown broken away at 12, and the main frame of the lathe being shown broken away at 13.

14 represents the casing or gearbox, the main frame. f 15 represents, in the present exemplification, the driving shaft, 16 the driven shaft, and 17 an intermediate shaft, also hereinafter referred to as the counter-shaft, which is operatively located between the driving and driven shafts. It is of course obvious that tlm direction of the transmission of motion may be reversed without departing from the spirit of my invention.

' Specification of Letters Patent.

Patented Jan. 30, 1912. Serial No. 651,116.

21 is a nest of diversely-sized gears, hereinafter referred to as the cone-of-gears, secured to the shaft 15.

22 is a tumbler-gear on a stud 23 on a tunibler-arm 24 pivoted about tumblershaft 25, journaled in bearings 26 in the gear-box and having a pinion 27-thereon receiving motion from a suitable source of power, as from the spindle of the lathe.

28 is a gear which meshes, with the tumblcr-gear 22, and has spline--conucction 29 with the tumbler-shaft. The tumbler-arm is arranged to be moved longitudinally of the tumbler-shaft for bringing the tumblergear thereon opposite any one or" the gears of the cone-of-gears.

I have provided novel positioning and locking means for the tumbler-arm. The tumbler-arm has locking-pin 31 thereon, shown as a pull-pin, having connection with the handle 32 of the tumbler-arm and normally urged outwardly by a spring 33. 34, ill, are a series of holes which coact with the locking-pin, so that when the lockingpin is located in any given hole the tumblergear will he in proper mesh with the corresponding given gear of the cone-of-gears.

35 is a comb on theiront wall 36 of the casing, the sides of the teeth of the comb being presented toward said front wall, so that the pin may be moved across said front Wall lengthwise of said teeth in the spaces between the same, and be guided between the adjacent side walls of said teeth, and snap into the hole .therebetwcen when the pin reaches the hole. The ends of the teeth of the comb are beveled at both sides, as shown at 37, for leading the pin into the spaces between the adjacent side walls of the teeth, these beveled faces being distanced from the holes so as to locate the tumblergear in lateral position opposite the gear with which the hole corresponds prior to meshing position thereof, for insuring that meshing relation will be had only with said given gear of said cone-of-gearswhen bringing said tumbler-gear into meshing engagement, further insuring that said tumblergear will be brought out of meshing relation with any previously meshed gear of said cone-of-gears, and preventing that the corners only of the gears will be brought into meshing relation, in other words, insuring that the meshing gear-teeth will engage throughout their entire lengths.

52 having spline-connection 53 With said shaft. The group of gears 49 eoacts with the group of gears 41. The group of gears 49 is arranged to be moved laterally for causing meshing relation between the gears 50 and 43 or between the gears 51 and 44 or said group of gears 49 may be placed in neutral position between the gears 43 and 44, which are spaced apart for the purpose.

55 is a group of gears which in the present instance comprises the gears 56, 57 and 58, which rotate with and are laterally slidable lengthwise of the shaft 16, as by being on a sleeve 59 having spline-connection 60 with said shaft. ranged to be moved laterally for causing meshing relation between the gears 56 and 46, or between the gears 57 and 47, or be;

tween the gears 58 and '48, the gears 46, 47 and-48 being spaced apart for the purpose.

The lead screw' 11 .is journale-d in a bearing 61 and the feed-rod 12 is journaled in a bearing 62, the bearings 61 'and 62 being on a bracket 68 secured to the main frame. A gear 64 is secured to the leadscrew and a gear 65 is secured to thefeed-rod. These gears are located in spaced-apart relation longitudinally of the screw and rod. 6611s a gear rotating with but slidablelongitudinally of the shaft 16, as by means of the spline-connection 67, for locating the gears 64, 65 and 66 in different crossesectional planes when the gear 66 is out of -meshing relation with both; the gears 64 and 65, or for placing the gear 66 in coincidentcross.

sectional plane and meshing relation with,

either gear 64 or. 65.

68 is a cover secured to the frame, in which said gears are located.

For accomplishing lateral shifting of the group of having 'a ork 72 pivoted thereon on a pin 73, the tines of the fork bein-greceived at therespective sides of the gear 50. y The arm 71 is on a rock-shaft 74'journaled in a bearing 75 ofthe casing and provided with an arm 7 6 having a'handle 77 which has a pin 78 secured thereto, the pin being pressed outwardlyby a spring 7 9 into holes 80, 81, 82, at the front of the casing.

The group of gears 55 is shifted laterally by meansof an arm 86 having a shoe 87 pivoted thereon on a pin 88 and received in an annular groove 89 of the sleeve 59. The

The group of gears 55 is an "to be brought close together.

ears 51, 1 provide an arm'71 arm 86 is secured to a rock-shaft 91 journaled in abearing 92 of the gear-box and having an operating arm 93 provided with an operating handle 94 which connects with a pin 95 arranged to be received in any one .of the holes 96, 97 and 08 in the casing.

For shifting the gear 66 laterally I pro- "vide a fork 101, the tines of which are received at its sides and which is pivoted on a pin 102 on an arm 103 secured to a rockshaft 104 journaled in a bearing 105 in the cover and having a hand-wheel 106 thereon. 107, 108, are a pair of stops in the form of lugs on the inside wall of the cover 68.

The cone-of-gcars with its tumbler-gear and the gears of the group of gears 49 and 41 and the gears of the group of gears- 55 and 42 are so arranged with relation to their diameters, that movement of the arms 24, 76 and 93, for operating said tumbler-gear and group of gears 49 and 55 respectively will in one direction for effecting increase of speed and in the other-direction for eifect-in'gdecrease of speed, so that coir fusion of the operator is avoided and coinpactness of a raiigemeiit of the gears is obtained. Thus for decrease of speed of the cone-of-gears, the arm 24 is moved in the direction of the arrow a, for decrease of speed'between the group of gears 49 and 4.1, the" arm '2' 6 is moved in the direction of the arrow 6, and for decrease of speed between the group of gears 42 and 55, the handle 93 is moved in the direction of the arrow 0.

The conc-of-gears and the group of gears 49 have their smaller gears in adjr cent relation, while the group of gears 41 and 42 have their larger gears in adjacent relation, and the cone-of-gears and the group of gears 42 have their smallest and largest gears in opposed relation.

My improved device further permits five series .of'stepped gears to be employed collectively having three axes of rotation, three "of said series of gears being opposite each other in successive reversed stepped. relation and two pairs of said series being respectively in axial line. The arrangement enables the centers of rotation of the gears Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is: p

1. In combination, a fixedly positioned countershaft, a plurality of groups of spaced-apart gears thereon, and laterally slida-ble gear-sleeves between which said fixedly'positioned countershaft is operatively located, said laterally slidable gear-sleeves comprising gears arranged for operative connection with said respective plurality of groups of spaced-apart gears 2. In combination, a fixedly positioned countershaft, a plurality of groups of spaced-apart gears thereon, and laterally slidable gear-sleeves between which said fixedly positioned countershaft is operatively located, said laterally slidable gearsleeves comprising gears arranged for operative connection with said respective plurality of groups of spaced-apart gears, a nest of 'diversely-sized gears whose rotary axes are coincident with therotary axis of one of said gear-sleeves, and a tumbler-gear 19 arranged to mesh the respective gears of said nest of diversely-sized.gears.

3. In combination, a plurality of interme diate groups of spaced-apart gears having coincident rotary axes, a laterally slidable group of diversely-sized driving gears havingselective operative connection with one of said first-named groups, a pair'of operated shafts, a gearforeach of said shafts, and a pair of slidable gear elements, one

2 of which comprises a plurality of diverselysized gears having selective operative connection with the other of said first-named groups, and the other of which has selective operative connection with said respective gears for said operated shafts.

4. In combination, a plurality of inter-' mediate groups of'spaced-apart gears having coincident rotary axes, a cone-of-gears and a laterally slidable group of diverselysized driving gears driven by said cone-ofgears, said laterally slidable group of gears having selective operative relation with one of said first-namedgroups, a pair of operated shafts, a gear for each of said shafts,

and a pair of slidable gear elements, one of which comprises a plurality of diverselysized gears having selective operative relation with the other of said first-named groups, and'the .other of which has opera- 40 tive relation with said respective gears for said operated shafts.

' 5. In speed changing mechanism, the combination of a driving shaft, a driven shaft, and a pair of spaced-apart geargroups, a slidable group of diversely-sizedgears'rotating with said driving shaft and having selective operative connection with one of said first-named gear-groups and a slidable group of diversely-sized gears rotating with said driven shaft and having selective operative connection with the other of said first-named gear-groups.

6. In speed changing mechanism, the combination of-a pair of spaced-apart geargroups respectively compnsing gears of different diameters, a driving shaft, a slidable group of diversely-sized gears rotating with said driving shaft and having selective operative connection with one of said first-named gear-groups, a slidable group of diversely-sized gears rotating with said driven shaft and having selective operative connection with the other of said first named gear-groups, a pair of operated shafts, a gear for each of the latter, and a laterally slidable gear rotating with said- .sized gears.

8. In combination, three shafts comprising a driving shaft and a driven shaft, and

four groups of diversely-sized gears and a cone-of-gears mounted thereon,'two of said groups of diversely-sized gears being longitudinally slidable for operative connection with twoothersof said groups of diverselysized gears, a tumbler-gear coacting with the respective gears of said cone-of-gears, a pair of operated shafts, and means for selectively operatively connecting either of said operated shafts with said driven shaft.

9. In speed changing mechanism, the combination of a cone-of-gears, a tumblergear, a laterally movable pivoted tumblerarm therefor, .a wall past which said arm projects, said arm comprising a handle outside said wall, said wall having a comb thereon the teeth whereof have one of their sides-presented to said wall, said wall provided with holes between said teeth, and a pin on said arm having connection -with said handle arranged to be guided lengthwise of said teeth .into said holes.

" 10. In speed changing mechanism, the

combination of a driven shaft, a pair of operated shafts, a pair of gears for the latter located in spaced apart cross sectional planes, a gear rotating with and slidable on said driven shaft, the teeth of all said gears arranged to be placed in different cross-seoti'onal planes, and means for sliding said last-named gear laterally comprising a shoe for sliding said gear, a pivoted arm on which said shoe is mounted, and stops at the respective sides of said arm for limiting the movement of said arm when said slidable gear is in meshing relation with the respec tive gears of said pair of gears.

11. In combination, a plurality of intermediate groups of spaced-apart gears having coincident rotary axes, and laterally slidable groups of diversely-sized gears between Which said first-named groups are operatively located, the gears. of said laterally slidable groups of di'versely-sized gears arranged to coact with the gears of said respective intermediate groups of spaced-apart gears.

12. In speed changing mechanism, the combination of 'a cone of diversely-sized gears and a group of diversely-sized gears having coincident rotaryaxes and arranged in step-relation with their smaller gears adjacent'to each other, and a pair of groups of diversely-sized gears having co incident rotary axes arranged in step-relation with their larger gears adjacent to each other, one of said last-named groups being opposite said. cone-of-gears and the other of said last-named groups being opposite said first-named group, and gearin havingselective operative connection wit the respecgroup 1 of gears opposite smallest gears respectively of said interm.e-

diate group operatively positioned between respectively the smallest and largest gears of the othersof said groups, and a pair of coacti-ng groups of diversely-sized gears respectively in line with said cone-of-gears and said intermediate group.

- 14. In speed changing mechanism, the combination of a pair of groups of diversely-sized gears arranged in step-relation with their larger gears. in adjacent relation,

a pair of laterally slidable groups of diversely-sized gears arranged in step-relation between which said last-named groups are operatively located for being brought into meshing relation therewith and having their smaller gears in adjacent cross-sectional planes, an operating arm for each of said laterally slidable groups, a cone-of-gears, in axial line with one of said laterally slidable groups, the said cone-of-gears and lastnamed group having their smaller gears in adjacent relation, 9. tumbler-gear for said cone-of-gears, and an operating arm therefor, all said operating arms movable in similar directions for increase or for decrease of speed-relations between said gears.

ois-nee 15. In combination, five series of stepped gears, three of which series are oppositely arranged and two pairs of which series are axially arranged, the said series of stepped gears having three rotary axes and arranged for transmitting motion from one to the other of said series of stepped gears.

16. In combination, five series of stepped gears, three of which series are oppositely arranged and two pairs of which series are axially arranged, the said series of stepped gears having three rotary axes and arranged for transmitting motion from one to the other'of said series of stepped gears, a tumbler-gear, and means for causing selective meshing between said tumbler-gear and the respective gears of one of said series of stepped gears.

:'17. In combination, five series of stepped gears, three of which are opposite each other in successive reversed stepped relation and two pairs of said series being respectively in axial line, the said five series of stepped gears collectively having three axes of rotation and arranged. for transmitting rotary movement from one to the other thereof.

18. In combination, five series of stepped gears, three of which are opposite each other in successive reversed stepped relation and two pair-sot said series being respectively in axial line, the said five series of stepped gears collectively having three axes of rota-- tion and arranged for transmitting rotary movement from one to the other thereof, two of said series of stepped gears being movable lengthwise of their rotary axes with rela tion to two others of said series, and a tumbler-gear arranged for being selectively meshed with the gears of one of said series.

In testimony whereof, l have signed my name hereto in the presence of two subscrib ing witnesses.

- HERBERT L. BEELER.

Witnesses:

. CHAs. E. WEBER,

THERESA SILnnn.

(lo-pies 01 this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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