US2485151A - Gear-changing drive - Google Patents

Gear-changing drive Download PDF

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US2485151A
US2485151A US630594A US63059445A US2485151A US 2485151 A US2485151 A US 2485151A US 630594 A US630594 A US 630594A US 63059445 A US63059445 A US 63059445A US 2485151 A US2485151 A US 2485151A
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gear
gears
shaft
pairs
shifter
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US630594A
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Gorrell John Ellison
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Gorrell John Ellison
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H63/00Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/08Multiple final output mechanisms being moved by a single common final actuating mechanism
    • F16H63/16Multiple final output mechanisms being moved by a single common final actuating mechanism the final output mechanisms being successively actuated by progressive movement of the final actuating mechanism
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0293Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being purely mechanical
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H2708/00Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes
    • F16H2708/10Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes only the toothed wheels may be disengaged
    • F16H2708/12Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes only the toothed wheels may be disengaged the control being mechanical
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/19Gearing
    • Y10T74/19219Interchangeably locked
    • Y10T74/19293Longitudinally slidable
    • Y10T74/19298Multiple spur gears
    • Y10T74/19302Multiple spur gears with tumbler gear
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/19Gearing
    • Y10T74/19219Interchangeably locked
    • Y10T74/19293Longitudinally slidable
    • Y10T74/19335Single spur gear
    • Y10T74/1934Tumbler and cone

Description

Oct. 18, 1949. J, E. GORR LL 2,485,151
I GEAR-CHANGING DRIVE Filed Nov. 24, 1945 l 4 Shets-Sheet 1 Y B I MMcM ATTORNEYS Oct. 18, 1949. J. E. GORRELL 2,485,151
-" GEAR-CHANGING DRIVE Filed Nov. 24, 1945 4 Sheets-Sheet 2 M/VEA/MR JOHN ELL/SON GOP/PELL Oct. 18, 1949. J. E. GORRELL GEAR-CHANGING DRIVE Filed Nov. 24, 1945 4 Sheets-Sheet 4 I 28 DAYS DAYS JOHN ELL/JON GORPELL g (s44 nae/,4
Patented Oct. 18, 1949 UNITED STATES PATENT OFFICE GEAR-CHANGING DRIVE John Ellison Gorrell, Haworth, N. J.
Application November 24, 1945, Serial No. 630,594
12 Claims. 1
This invention relates to improvements in gear-changing drives.
One object of this invention is to provide an improved gear-changing drive or device which provides a wide range of speeds of the outputshaft of the device.
Another object of this invention is to provide an improved gear-changing drive having an indicator which automatically indicates the changes in speed corresponding to the output-shaft.
Another object of this invention is to provide an improved gear-changing drive formed of simple elements to produce an efficient, durable construction.
With the above and other objects in view, as will appear to those skilled in the art from the present disclosure, this invention includes all features in the said disclosure which are novel over the prior art.
In the description and claims, the various parts and steps are identified by specific terms for convenience, but they are intended to be as generic in their application as the prior art will permit.
In the accompanying drawings forming part of the present disclosure, in which one way of carrying out the invention is shown for illustrative purposes:
Fig. 1 is a top plan view on a reduced scale, illustrating one embodiment of a gear-changing device made in accordance with the present invention;
Fig. 2 is a, front elevation of Fig. 1;
Fig. 3 is a full scale plan view similar to Fig. 1, but with the cover-plate removed;
Fig. 4 is a sectional view on line 4-4 of Fig. 3';
Fig. 5 is a sectional view on line 5-5 of Fig. 4;
Fig. 6 is a sectional view on line G--6 of Fig. 3;
Fig. 7 is a perspective View of the swingable frame;
Fig. 8 is a perspective view of one of the cams of the rotatable shifter-shaft; and
Fig. 9 is a developed plan view of the indicator surface of the indicator-wheel.
Referring to the drawings showing the particular form of the invention chosen for illustration therein, the gear-changing drive or device II] includes a base in the form of a hollow box II, in the opposite sides I2 and I3 of which, are secured bushings I4 in which an input or driving-shaft I5 is rotatably mounted.
A swingable frame I6 is formed of two sidebars I! and I8 which are interconnected at their upper end-portions by a rod or bar I9 which is clamped to the side-bars I1 and I8 by the nuts which are threaded on the threaded ends ll 55 of the bar I9. The side-bars II and I8 are interconnected at their intermediate portion by an intermediate shaft 22 which is secured to the sidebars I1 and I8 by screws 23. The lower ends of the side-bars H and I8 of the frame I6 are pivoted at 24 on the-shaft I5 to Swing about the axis of the shaft I5.
A gear 25 has its hub 26 fixedly secured to the shaft I5 adjacent one end, in any suitable way, as for example by a pin 21, and a collar 28 is fixedly secured to the shaft I5 adjacent its other end, by the pin 29. Freely rotatable on the shaft I5 between the gear 25 and the collar 28, are a plurality of pairs of gears or gear pairs to M inclusive. The gear pair 30 consists of the two gears 30a and 30b, the gear 30a being fixed nonrotatably relatively to the gear 3% in any suitable way, as for example, by being fixedly secured upon the hub-extension 300 of the gear 302). In similar manner, each of the other gear pairs 3| to M have their respective gears 3Ia to 4m respectively non-rotatably connected to the gears ill!) to MD inclusive. Thus each gear pair 30 to 4| inclusive is free to rotate on the shaft I5 as a unit, independently of each of the other gear pairs on the shaft I5.
Two spaced-apart collars 42 and 43 are fixedly secured to the intermediate shaft 22 by any suitable means, as for example by the pins 44. Freely rotatable on the shaft 22 are a plurality of gear pairs 45 to 56 inclusive, and a single gear 51. The gear pair 45 includes a gear 45a secured non-rotatably to the gear 451) by being fixedly secured on the hub 450 of the gear 451). And the gears of each of the other gear pairs 45 to 56 are similarly connected together. Each of the gear pairs 45 to 56 is freely rotatable on the shaft 22 independently of each other gear pair, and of the single gear 51.
The gear 25 which is secured to the shaft I5, is in driving-relation with the gear 45a on the shaft 22, and the other gear 45b of the gear pair 45 which is non-rotatable relatively to the gear 45a, is in driving-relation with the gear 30a of the gear pair 30 on the shaft I5, and the gear 3% of the gear pair 30 on the shaft I5 is in driving-relation with the gear 46a of the gear pair 46 on the shaft 22, and the drive between the pairs of gears on the shafts I5 and 22 alternates back and forth in the manner just described until finally the gear 4Ia of the last gear pair 4| on the shaft I5 is driven from the gear 5% of the gear pair 56 on the shaft 22, and finally the gear 4Ib of the gear pair 41 on the shaft [5 drives the single gear 51 on the shaft 22.
Thus the gear 25 and the gear 45a are in meshing or drive-relation with one another, and thus form a pair of meshing or drive-gears. And similarly, each other two meshing gears such for example as the gear 551) on the shaft 22 and the gear 30a on the shaft l5, are in mesh with each other and thus form a meshing or drive-pair of gears. As each of the :1 gears 45a to 56a inclusive and the single gear 57 are free to rotate independently of one another on the shaft 22, it will be obvious that by suitably selecting any desired different ratio between the pitch-diameters of any meshing or drive-pair of gears, that any desired range of speeds of rotation, within limits, can be given to the a gears 45a to Sta inclusive and the single gear By having the gear and each of the b gears b to Mb inclusive, of the same pitch-diameter,it is possible,and preferable, to have all of the a gears 45a to 56a inclusive and the single gear M of a single pitch-diameter, for reasons which will be laterexplained.
An output or driven-shaft 58 is rotatably mounted in bushings 59 in the side walls 12 and [3 of the box H, and has a shifter-gear 60 (Fig.
6) splined thereon by the spline 6| so as to be non-rotatable relatively to the shaft 58 but 1ongitudinally slidable thereon. A shifter-arm 62 is longitudinally slidable on the shaft 58, and permits free rotation of the latter shaft 58. The shifter-arm 62 is threadedly engaged with a shifter-screw shaft 63 which is rotatably mounted in the side walls l2 and I3 and carries at its end, an operating hand-grip or knob 64. The shaft 63 is held against longitudinal movement by means of two cam-collars 0r earns 65 secured to the opposite end portions of the shaft 63 by any suitable means as for example by the screws 66. Each of the cams 65 has its major outer surface portion fill of cylindrical form and concentric with its axis and with the axis of the shiftershaft 63. A cam-depression 68 provides two oppositely sloping cam surfaces 69, all for purposes which will hereinafter be described.
A pinion 78 has a screw-threaded shank H which is screwed into one end of the shiftershaft 63. The pinion it is in mesh and drivingengagement with a gear '12 (Fig. 3) which is secured to an indicator or indicator-member 73 of cupshape form, by any suitable means as for example by the screws 74. A bearing-screw 15 extends through the members 13 and 12 and a spacer-collar l6, and has its inner threaded end 'l'l threadedly engaged in the side wall 12.
The outer cylindrical face or surface 18 of the indicator-member 13 can be marked with indicator marks 79 and proper indicator labels or designations as for example those illustrated in Fig. 9, which is a developed view of the surface 18 of the indicator-member 13. The indicator marks 79 are labeled as shown, from one second up to and including 28 days, which labeling will hereinafter be referred to in more detail.
As the frame It is pivoted coaxially with the shaft IE, to swing about the shaft 15 from its position illustrated in full lines of Fig. 4 to or beyond its broken-line outline position shown in Fig. 4, the gears on the shaft 22 will always remain in mesh with the meshing gears on the shaft l5, regardless of the rotational or pivoted position of the frame It. If the shifter-gear shaft 63 is rotated to bring the shifter-gear 60 into planar-alignment with any one of the a gears 65a to 560. or the single gear 51, then if the frame it is swung from its broken-line 'outline position to its full-line position shown in Fig. 4, then such two gears as have been planarly aligned, will be brought into mesh with one another as indicated in full solid lines in Fig. 4. The frame I6 is normally urged or swung toward the left of Fig. 4 by means of a spring 80 secured to the rod or shaft l9 and also secured to a portion 8! of the box II (Figs. 3 and 5). When the lugs 82 formed on the side-bars I"! and [8 of the frame I6, are located in the camdepressions 68, preferably with the upper ends 83 of the side-bars l6 and I1 engaging against limit means such as the screws 84 which are secured in lug-portions 85 of the box ll, then the shifter-gear 59 and the other such gear on the shaft 22 as it is in planar-alignment with, if any, will be brought into mesh with one another as illustrated in solid lines in Fig. 4.
When the hand-knob 64 is rotated either clockwise or anti-clockwise, the shifter-arm G2 is moved in a corresponding longitudinal direction in one direction or the other along the shaft 58, and correspondingly slides the shifter-gear 60 along with it. The construction and arrangement and proportions of all of the parts are such that when the shifter-arm 62 has moved the shifter-gear 60 into substantially planar-alignment with any one of the a gears 45a to 5611 inclusive and single gear 51 on the shaft 22, then the cam-depressions 68 will have concurrently arrived at the position illustrated in solid lines in Fig. 4 to thus permit the spring 80 to swing the frame 16 and the bank of gears on the shaft 22 carried by the frame It, to bring the gear on shaft 22 with which the shifter-gear 60 has been aligned, into mesh or drive-relation. And when the hand-knob 64 is rotated in either direction. from the position illustrated in solid lines in Fig. 4, sumciently to cause one or the other of the oppositely-sloped cam-surfaces 69 to force the lugs 82 of the frame l6 outwardly against the action of the spring 80, to thus move the two gears which were planarly-aligned, apart or out of mesh. Continued rotation of the shaft 63 by means of the knob 64 in either direction, will again bring the cam-depression 68 beneath the lugs 82 when the shifter-gear 6D has again been planarly-aligned in position for meshing, with one of the a gears 45a to 56a inclusive or single gear 51. And each time that the cams 65 are moved to the position shown in solid lines in Fig. 4 to thus permit the meshing action of two planarly-aligned gears, one of the indicatormarkings 19 will be brought into indicating position opposite the indicator or arrow-point 86 (Fig. 1), through the action of the gears '10 and 12 (Fig. 3). It will thus be seen that the operation of the parts 68 and 82 is most effectively accomplished for the gears on the intermediate shaft 22 that are meshable with the shifter-gear 6|], by having said meshable intermediate-shaft gears all of the same pitch diameter, thus at all times accomplishing proper meshing and proper cooperation of parts 68 and 82 since the swingable frame 16 will always be swung to the same angular position about the shaft IE to cause meshing with the shifter-gear 60'.
In the particular embodiment illustrated in the drawings, the shaft I5 is sometimes referred to herein as the input or driving-shaft, and the shaft 58 is sometimes referred to herein as the output or driven-shaft, but whether the shaft [5 is the driving or driven shaft in a given device, and whether the shaft 58 is correspondingly the driven or driving shaft, each of such shafts is a drive-shaft, and maybe so referred to. And
when two shafts, gears, etc., are referred to as being in drive-relation, this expression is intended to not distinguish as to which is the driving and which is the driven member. With any given a gear 45a to 56a or single gear 51, in mesh with the shifter-gear 60, these two shafts l5 and 58 will have a certain speed-ratio between them regardless of which is the driving-shaft and which is the drivenshaft. In the particular embodiment illustrated in the drawings, the indicator markings of from one second to twentyeight days illustrated in Fig. 9, correspond to a rotational speed of the driving-shaft I5, of sixty revolutions per minute. When the shifter-gear 60 has been planarly-aligned for meshing position with the gear 4511, the one-second indicator mark will be indicated by the arrow-point 86. And correspondingly, when the shifter-gear 60 has been successively shifted further to the right of Fig. 6, as it successively comes in planar-alignment with one and then the other of the successive a gears 45a to 55a inclusive and the single gear 51, corresponding indicator markings of five seconds, fifteen seconds, one minute, etc., will correspondingly appear opposite the arrow-indicator B6.
Inasmuch as the shifter-gear 60 is illustrated in the drawings as aligned with the gear 48a on the shaft 22, the indicator-arrow 86 will indicate the one-minute speed of rotation for the output shaft 58. When the shifter-gear 60 is in driverelation with the gear 45a on the shaft 22, then if the input shaft l5 rotates once per second or sixty per minute, then the output-shaft 58 will also rotate once per second or sixty per minute, and this is indicated by the one-second indication near the lower end of Fig. 9. And with the same rotational speed of sixty per minute of the inputshaft l5, if the shifter-gear 59 is in drive-relation with the next gear 461:. on the shaft 22, then, with the proportions of the parts illustrated in the drawings, the output-shaft 58 will rotate once in five seconds or one-fifth as fast as the input-shaft l 5, and so on. While the input-shaft [5 can be driven in any suitable way at any suitable speed and by any suitable means, one way in which this can be satisfactorily accomplished is to drive it with an electric-motor having a speed of rotation of, for example, eighteen hundred R. P. M., and reduced by reduction-gearing to a motor output-shaft which rotates at sixty revolutions per minute and which is directly connected to the input-shaft l5 and thereby causes the shaft IE to rotate at sixty revolutions per minute. Of course, any other speed of rotation desired, could be given to the shaft 15, the speed of rotation of sixty per minute being merely used as illustrative, and to correspond with the indicator-markings and proportions of the parts as illustrated in the drawings.
When two members such for example as two shafts, are referred to as a first shaft and a second shaft, the sole purpose of use of the terms first and second is to distinguish one shaft from the other.
Gear-changing drives or units made in accordance with the present invention have a very wide range of speed-drives for the output-shaft 58, as will be evident from Fig. 9, and it gives these rates of one revolution in each of the times indicated in Fig. 9 depending upon the mesh-position of the shifter-gear 60, with great precision. And, therefore, one use for the present device can be for driving a chart at any one of a predetermined number of a wide range of speeds.
The invention may be carried out in other specific ways than those herein set forth without departing from the spirit and essential characteristics of the invention, and the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are intended to be embraced therein.
I claim:
1. A gear-changing drive including: a rotatable driving shaft; a rotatable driven shaft; an intermediate shaft; a driving gear driven by said driving shaft; a first set of independently rotatable pairs of gears on said intermediate shaft, the gears of each pair of a number of said pairs of gears being fixed non-rotatably relatively to one another; a second set of independently rotatable pairs of gears, the gears of each pair being fixed non-rotatably relatively to one another; said driving gear being in driving relation with one gear of a pair of said first set of pairs of gears; one gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driving relation with a gear of each pair of a number ofpairs of said second set of pairs of gears, and the other gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driven relation with a gear of each pair of a number of pairs of said second set of pairs of gears; a shifter-gear having driving relation with said driven shaft, and adapted to be selectively engaged with one gear of each pair of a number of pairs of said first set of pairs of gears; said gears being so constructed and arranged that said selective engagement of said shifter-gear with said gears of said first set of pairs of gears, selectively provides different selectable speed-ratios between said driving and driven shafts.
2. A gear-changing drive including: a rotatable driving shaft; a rotatable driven shaft; an intermediate shaft; a driving gear driven by said driving shaft; a first set of independently rotatable pairs of gears on said intermediate shaft, the gears of each pair of a number of said pairs of gears being fixed non-rotatably relatively to one another; a second set of independently rotatable pairs of gears, the gears of each pair being fixed non-rotatably relatively to one another; said driving gear being in driving relation with one gear of a pair of said first set of pairs of gears; one gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driving relation with a gear of each pair of a number of pairs of said second set of pairs of gears, and the other gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driven relation with a gear of each pair of a number of pairs of said second set of pairs of gears; a shifter-gear on and longitudinaily slidable but non-rotatable relatively to said driven shaft, and adapted to be selectively engaged with one gear of each pair of a number of pairs of said first set of pairs of gears; said gears being so constructed and arranged that said selective engagement of said shifter-gear with said gears of said first set of pairs of gears, selectively provides different selectable speed-ratios between said driving and driven shafts.
3. A gear-changing drive including: a rotatable driving shaft; a rotatable driven shaft; an intermediate shaft; a driving gear driven by said driving shaft; a first set of independently rotatable pairs of gears on said intermediate shaft, the gears of each pair of a number of said pairs of gearsfbeing fixed non-rotatably relatively to one another; a second set of independently rotatable pairs of gears, the gears of each pair being fixed non-rotatably relatively to one another; said driving gear being in driving relation with one gear of a pair of said first set of pairs of gears; one gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driving relation with a gear of each pair of a number of pairs of said second set of pairs of gears, and the other gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driven relation with a gear of each pair of a number of pairs of said second set of pairs of gears; a shifter-gear on and longitudinally slidable but non-rotatable relatively to said driven shaft; shifter-means adapted to selectively shift said shifter-gear into planar alignment with one gear of each pair of a number of pairs of said first set of pairs of gears, and meshing-means actuated by said shifter-means to cause meshing of said shifter-gear and a gear with which it has been selectively shifted into planar alignment;
said gears being so constructed and arranged that said selective engagement of said shifter-gear with said gears of said first set of pairs of gears, selectively provides different selectable speedratios between said driving and driven shafts.
4. A gear-changing drive including: a rotatable driving shaft; a rotatable driven shaft; an intermediate shaft; a driving gear driven by said driving shaft; a first set of independently rotatable pairs of gears on said intermediate shaft, the gears of each pair of a number of said pairs of gears being fixed non-rotatably relatively to one another; a second set of independently rotatable pairs of gears, the gears of each pair being fixed 'non-rotatably relatively to one another; said driving gear being in driving relation with one gear of a pair of said first set of pairs of gears; one gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driving relation with a gear of each pair of a number of pairs of said second set of pairs of gears, and the other gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driven relation with a gear of each pair of a number of pairs of said second set of pairs of gears; a shifter-gear on and longitudinally slidable but non-rotatable relatively to said driven shaft; a rotatably-mounted shiftershaft; shifter-means engaged with said shiftershaft and adapted to be moved longitudinally of said shifter-shaft by rotation of said shiftershaft to selectively shift said shifter-gear into planar alignment with one gear of each pair of a number of pairs of said first set of pairs of gears, and meshing-means actuated by rotation of said shifter-shaft to cause meshing of said shiftergear and a gear with which it has been selectively shifted into planar alignment; said gears being so constructed and arranged that said selective engagement of said shifter-gear with said gears of said first set of pairs of gears, selectively provides different selectable speed-ratios between said driving and driven shafts.
5. A gear-changing drive including: a rotatable driving shaft; a rotatable driven shaft; an intermediate shaft; a driving gear driven by said driving shaft; a first set of independently rotatable pairs of gears on said intermediate shaft, the gears of each pair of a number of said pairs of gears being fixed non-rotatably relatively to one another; a second set of independently rotatable pairs of gears, the gears of each pair being fixed non-rotatably relatively to one another; said driving gear being in driving relation with one gear of a pair of said first set of pairs of gears; one gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driving relation with a gear of each pair of a number of pairs of said second set of pairs of gears, and the other gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driven relation with a gear of each pair of a number of pairs of said second set of pairs of gears; a shifter-gear on and longitudinally slidable but non-rotatable relatively to said driven shaft; a rotatably-mounted shifter-shaft; shifter-means engaged with said shifter-shaft and adapted to be moved longitudinally of said shifter-shaft by rotation of said shifter-shaft to selectively shift said shifter-gear into planar alignment, with one gear of each pair of a number of pairs of said first set of pairs of gears, and meshing-means actuated by rotation of said shifter-shaft to cause meshing of said shifter-gear and a gear with which it has been selectively shifted into planar alignment; said gears being so constructed and arranged that said selective engagement of said shifter-gear with said gears of said first set of pairs of gears, selectively provides different selectable speed-ratios between said driving and driven shafts; and speed-indicator means actuable by rotation of said shiftershaft to indicate the speed corresponding to any selectively meshed gears.
6, A gear-changing drive including: a rotatable driving shaft; a rotatable driven shaft; a frame pivoted to swing about an axis co-axial with the axis of said driving shaft; and intermediate shaft mounted in said frame parallel to said driving shaft; a driving gear driven by said driving shaft; a first set of independently rotatable pairs of gears on said intermediate shaft, the gears of each pair of a number of said pairs of gears being fixed non-rotatably relatively to one another; a second set of independently rotatable pairs of gears, the gears of each pair being fixed non-rotatably relatively to one another; said driving gear being in driving relation with one gear of a pair of said first set of pairs of gears; one gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driving relation with a gear of each pair of a number of pairs of said second set of pairs of gears, and the other gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driven relation with a gear of each pair of a number of pairs of said second set of pairs of gears; a shifter-gear on and longitudinally slidable but non-rotatable relatively to said driven shaft; shifter-means adapted to selectively shift said shifter-gear into planar alignment with one gear of each pair of a number of pairs of said first set of pairs of gears, and said frame adapted to be swung to cause a gear on said intermediate shaft which is in planar alignment with said shifter-gear, to mesh with said shifter-gear; said gears being so constructed and arranged that said selective engagement of said shifter-gear with said gears of said first set of pairs of gears, selectively provides different selectable speed-ratios between said driving and driven shafts.
7. A gear-changing drive including: a rotatable driving shaft; a rotatable driven shaft; a frame pivoted to swing about an axis co-axial with the axis of said driving shaft; an intermediate shaft mounted in said frame parallel to said driving shaft; a drivin sear driven by said driving shaft; 21. first set of independently rotatable pairs of gears-on said intermediate shaft. the gears of each pair of a number Of said pairs of gears being fixed non-rotatably relatively to one another; a second set of independently rotatable pairs of gears, the ears of each pair being fixed non-rotatably relatively to one another; said driving gear being in driving relation with one gear of a pair of said first set of pairs of gears;
one gear of each pair of a number of pairs of said '10 with said shifter-gear; said gears being so constructed and arranged that said selective engagement of said shifter-gear with said gears of said first set of pairs of gears, selectively provides different selectable speed-ratios between said driving and driven shafts.
9. A gear-changing drive including: a rotatable driving shaft; a rotatable driven shaft; a frame pivoted to swing about an axis coaxial with the axis of said driving shaft; an intermediate shaft mounted in said frame parallel to said driving shaft; a driving gear driven by said driving shaft; a first set of independently rotatable pairs of gears on said intermediate shaft, the gears of each pair of a number of said pairs of gears being fixed non-rotatably relatively to one another; a second set of independently rotatable pairs of gears, the gears of each pair being fixed non-roshaft and adapted to be moved longitudinally of said shifter-shaft by rotation of said shifter-shaft to selectively shift said shifter-gear into planar alignment with one gear of each pair of a number of pairs of said first set .of pairs of gears, and meshing-means actuated by rotation of said shifter-shaft to cause said frame to be swung toward said shifter-shaft to cause meshing of said shifter-gear and a gear with which it has been selectively shifted into planar alignment; said gears being so constructed and arranged that said selective engagement of said shifter-gear with said gears of said first set of pairs of gears, selectively provides different selectable speed-ratios between said driving and driven shafts.
8. A gear-changing drive including: a rotatable driving shaft; a rotatable driven shaft; a frame pivoted to swing about an axis co-axial with the axis of said driving shaft and normally yieldably urged to swing toward said driven shaft; an intermediate shaft mounted in said frame parallel to said driving shaft; 2, driving gear driven by said driving shaft; a first set of independently rotatable pairs of gears on said intermediate shaft, the gears of each pair of a number of said pairs of gears being fixed non-rotatably relatively to one another; a second set of independently rotatable pairs of gears, the gears of each pair being fixed non-rotatably relatively to one another: said driving gear being in driving relation with one gear of a pair of said first set of pairs of gears; one gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driving relation with a gear of each pair of a number of pairs of said second set of pairs of gears, and the other gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driven relation with a gear of each pair of a number of pairs of said second set of pairs of gears; a shifter-gear on and longitudinally slidable but non-rotatable relatively to said driven shaft; a rotatably-mounted shifter-shaft; shifter-means engaged with said shifter-shaft and adapted to be moved longitudinally of said shifter-shaft by rotation of said shifter-shaft to selectively shift said shifter-gear info planar alignment with one gear of each pair c number of pairs of said first set of pairs of and meshing-means actuated by rotation o s id shifter-shaft to permit said frame to be yieldably swung toward said driven shaft to cause a gear on said intermediate shaft which is in planar alignment with said shifter-gear to mesh,
tatably relatively to one another; said driving gear being in driving relation with one gear of a pair of said first set of pairs of gears; one gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driving relation with a gear of each pair of a number of pairs of said second set of pairs of gears, and the other gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driven relation with a gear of each of a number of pairs of said second set of pairs of gears; a shifter-gear on and longitudinally slidable but non-rotatable relatively to said driven shaft; a rotatably-mounted shifter-shaft; shifter-means engaged with said shifter-shaft and adapted to be moved longitudinally of said shifter-shaft by rotation of said shifter-shaft to selectively shift said shifter-gear into planar alignment with one gear of each pair of a number of pairs of said first set of pairs of gears, and meshing-means actuated by rotation of said shifter-shaft to cause said frame to be swung toward said shifter-shaft to cause meshing of said shifter-gear and a gear with which it has been selectively shifted into planar alignment; said gears being so constructed and arranged that said selective engagement of said shifter-gear with said gears of said first set of pairs of gears, selectively provides different selectable speed-ratios between said driving and driven shafts; and speed-indicator means actuable by rotation of said shifter-shaft to indicate the speed corresponding to any selectively meshed gears.
10. A gear-changing drive including: drivemeans; a rotatable drive shaft; an intermediate shaft; a plurality of rotatable gears on said intermediate shaft; a shifter-gear on and longitudinally slidable but non-rotatable relatively to said drive-shaft; and shifter-means adapted to selectively shift said shifter-gear into planar alignment with any one of a number of said rotatable gears; said intermediate shaft with said rotatable gear-s being constructed and arranged to be relatively movable toward said shifter-gear to cause meshing of said shifter-gear and a gear with which it has been selectively shifted into planar alignment; and said drive-means being constructed and arranged to drive said rotatable gears at different speeds when any one of said rotatable gears is in mesh with said shiftergear.
11. A gear-changing drive including: drivemeans; a rotatable drive shaft; an intermediate shaft; a plurality of rotatable gears of the same pitch diameter on said intermediate shaft; a shifter-gear on and longitudinally slidable but non-rotatable relatively to said drive-shaft;
shifter-means adapted to selectively shift said shifter-gear into planar alignment with any one of a number of said rotatable gears; said intermediate shaft with said rotatable gears being constructed and arranged to be relatively movable toward said shifter-gear to cause meshing of said shifter-gear and a gear with which it has been selectively shifted into planar alignment; said drive-means being constructed and arranged to drive said rotatable gears at different speeds when any one of said rotatable gears is in mesh with said shifter-gear; and speed-indicator means actuated by said shifter-means to indicate the speed corresponding to any selectively meshed gears.
12. A gear-changing drive including: a first rotatable shaft; a second rotatable shaft; an intermediate shaft; a drive-gear in drive-relation with said first rotatable shaft; a first set of independently rotatable pairs of gears on said intermediate shaft, the gears of each pair of a number of said pairs being fixed non-rotatably relatively to one another; a second set of independently rotatable pairs of gears, the gears of each pair of a number of said pairs being fixed non-rotatably relatively to one another; said drive-gear being in drive-relation with one gear of a pair of said first set of pairs of gears; one gear of each pair of a number of pairs of said first set of pairs of gears respectively being in driverelation with a gear of each pair of a number of pairs of said second set of pairs of gears, and the other gear of each pair of a number of pairs of said first set of pairs of gears respectively being in drive-relation with a gear of each pair of a number of pairs of said second set of pairs 01' gears; a shifter-gear having drive-relation with said second rotatable shaft, and adapted to be selectively engaged in drive-relation with one gear of each pair of a number of pairs of said first set of pairs of gears; said gears being so constructed and arranged that said selective engagement of said shifter-gear with said gears of said first set of pairs of gears, selectively provides different selectable speed-ratios between said first and second rotatable shafts.
JOHN ELLISON GORRELL.
REFERENCES CITED The following references are of record in the filo of this patent:
UNITED STATES PATENTS Number Name Date 1,508,879 Healey Sept. 16, 1924 1,967,559 Schreck July 24, 1934 1,984,039 Sieg Dec. 11, 1934
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2662417A (en) * 1950-05-17 1953-12-15 Mascherpa Antonio Speed change gearing
US2673472A (en) * 1950-06-08 1954-03-30 Sidney Machine Tool Company Variable speed mechanism
US2699297A (en) * 1952-01-16 1955-01-11 Weinreich Sol Coil winding machine
US2743622A (en) * 1951-08-10 1956-05-01 Kienzle Apparate Gmbh Setting device for price indicator for liquids
US3882773A (en) * 1971-10-26 1975-05-13 Norprint Ltd Adjustable facet print mechanisms
WO2005068880A1 (en) * 2004-01-13 2005-07-28 Zf Friedrichshafen Ag Switching device in a multi-speed gearbox

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1508879A (en) * 1923-10-18 1924-09-16 Healey Francis Jeremiah Variable velocity-ratio gearing
US1967559A (en) * 1932-06-18 1934-07-24 Treadwell Engineering Company Shear driving and feeding mechanism
US1984039A (en) * 1932-12-14 1934-12-11 Samuel M Langston Co Change speed gearing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1508879A (en) * 1923-10-18 1924-09-16 Healey Francis Jeremiah Variable velocity-ratio gearing
US1967559A (en) * 1932-06-18 1934-07-24 Treadwell Engineering Company Shear driving and feeding mechanism
US1984039A (en) * 1932-12-14 1934-12-11 Samuel M Langston Co Change speed gearing

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2662417A (en) * 1950-05-17 1953-12-15 Mascherpa Antonio Speed change gearing
US2673472A (en) * 1950-06-08 1954-03-30 Sidney Machine Tool Company Variable speed mechanism
US2743622A (en) * 1951-08-10 1956-05-01 Kienzle Apparate Gmbh Setting device for price indicator for liquids
US2699297A (en) * 1952-01-16 1955-01-11 Weinreich Sol Coil winding machine
US3882773A (en) * 1971-10-26 1975-05-13 Norprint Ltd Adjustable facet print mechanisms
WO2005068880A1 (en) * 2004-01-13 2005-07-28 Zf Friedrichshafen Ag Switching device in a multi-speed gearbox

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