US991754A - Mechanism for transmitting speed and power. - Google Patents

Mechanism for transmitting speed and power. Download PDF

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US991754A
US991754A US58750810A US1910587508A US991754A US 991754 A US991754 A US 991754A US 58750810 A US58750810 A US 58750810A US 1910587508 A US1910587508 A US 1910587508A US 991754 A US991754 A US 991754A
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Prior art keywords
gear
driving
driven
members
shaft
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US58750810A
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Elmer Schoonmaker
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Elmer Schoonmaker
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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
    • F16H3/00Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/62Gearings having three or more central gears
    • F16H3/66Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another

Description

E. SCHOQNMAKER. MECHANISM FOR TRANSMITTING SPEED AND POWER. APPLIUATION FILED DEC. 2, 1907. RENEWED 001217, 1910.
Patented May 9, 1911.
I k &
1 1 Viz Mmzssss W. C. W
INVEN 100 .ZZZrrzerSei'w 072 maker ELMER SCHOONMAKER, or NEvv YoRK, N. v.
MECHANISM FOR TRANSMITTING SPEED -AND rowan.-
To all whom it may concern:
Be it known that I, Emma SCHOONMAKER,
a citizen of the United States, residing inthe city of New Yorlgborough of Bronx, and
State of: New York, have invented acertain new and useful Mechanism for Transmitting Speedand Power, or which the following is a specification;
The invention .relates to mechanism adapted to increase the power derived from 'a drlvmg element, such as a shaft, or to at- Specification of Letters Patent.
Application filed December 2, 1907, Seria1.No. 4Q 1,69.
tam an increased speed over and above the.
speed of such driving element. These results are accomplished by means of certain devices, mainly particular forms of gear mechanism, locatedintermediate the driving element and the driven-element whereby I am enabled to-increase the leverage,'so to speak, thereby resulting in the production of enhanced-power,- or, on the contrary,.d1- 'm-inish the leverage w1th a proportionate 1ncreaseof speed.
The preferred formof the invention embodies a driving shaft provided with a driving element, such as'a bevel pinion;- two members,, such as gears, driven-thereby in opposite directions, one of said members havingan internal'gear, and the other a pinion meshing with said internal gear, a driven shaft carrying a driven gear meshing with said last mentioned pinion.
The member having the internal gear is adapted to be-shifted out of-engagement with the driving element and 'locked in its non-engaging position, andwh'en in this position'said internal gear is in mesh with the pinion carried by the other member or gear. Wheuthe mechanism is positioned as just described, it operates to produce greater powerin the driven shaft than that which obtains in'the driving shaft. When the two oppositely rotating .members are in' mesh with the driving pinion, whereby one of said 'memberscarrymg. the internal gear is rotated in'one'direction, and the other member carrying the-pinion is rotated in an opposite direction, increased speed is secured iii-the driven element over and above the speed of the driving element.
In the accompanying drawings, I have illustrated one practical'embodiment of the invention,- but the-construction shown there- H1 is to be understood as' illustrative,
only,
-. be used generally as a shaft drive.
' the two shafts relative to important, noris it necessary that the shaft, C, shall be a continuous, solid or unbroken shaft or axle, such as is commonly employed, in the differential gears of automobiles,-but'- as this is an obvious expedient, I have not and not as defining the limits of the -inven-' tion. w
Renewed October 17, 1910. Serial No. 587,508.
Figure 1 is a'planfview, partly in horizontal section, of a. mechanism for'transmitt-mgspeed and power embodying my in- Patented May t), 1911. I
vention, the plane of the section being indicated by the dotted line 11 of Fig. 3, said View showing themcchanism adjustedfor increaslng the power applied tothe drlven shaft. Fig. 2 is a View similar to Fig. 1 showing the mechanism adjusted for increasing the speed of the driven shaft above the speed ,of the driving shaft. Fig. 3 is a vertical transverse section on theline 3--3 of 1' Fig. 1.- Fig. 4 is a detail view of the mem- The invention is shown in 'the drawings as a mechanism adapted for use in connect-1on with an automobile. but it ]S to be understood that said invention is not restricted to this particular field, for the reason that the mechanism may be used in any and all arts where it is desirable to apply toth'e driven part or element an increased speed or increased power as compared with the drivmgelement. The apparatus may, therefore,
A designates a driving shaft which is provided with a driving member, B, the latter" being preferably in the form of a'bevel gear pinion. The dpiven shaft, C, is provided with a spur gear pinion, DI The two shafts,-
A, C, are shown as being mounted by bear 3 mgs, a, 0, respectively, in a gear casing or housing, E, adapted to serve as a frame for supporting the working parts, as well as for precluding dust and dirt from lodging on the transmitting mechanism, but the par ticular form of housing herein shown is not considered essential, for the reason that any suitable frame work may be employed for supporting the working parts of the transmission. The shaft. C, extends through the housing in a, direction at right angles to the shaft, A,but"the particular arrangement of --.ch other is not shaft. Forexample, my-newi transmission may be used in connection-with a divided considered it necessary to more fully dedrawings. I
F and G designate rotary members-dis,
scribe the 'same, nor to illustrate it in the posed loosely with relation 'to the driven shaft, C, and on opposite sides of the plane of the driving shaft, A,'and the driving element, B, thereon. Said member's; F, G, are represented as bevel gears which are disposed in facing relation. The member, F,-
1s mounted loosely on the driven shaft, 0,
so as' to have a'predetermined relation to the driving shaft, A, whereby said member, F,
is normally in mesh with the driving pinion,
The other member, G, however, is slidable with relation to the driving shaft, A, and thepinion, B, and in one position of theimember, G, it is adapted to mesh with the pinion, B, whereby the members, F, G, are adapted tobe driven simultaneously from .thelpinion, B, and in opposite direc tions-to each other, the speeds of said members, F, G, being substantially the same.
Said member, G, is mounted loosely on the shaft, C, so as to have a slidingmovement thereon, and thissliding movementmay be communicated or imparted to said member,-
G, by any suitable or preferred devices.
As shown in Figs. 1 and 2, the member, G,
' is provided with a grooved hub, g, in which ion. The disengagement of the member, G,
on the shaft, 0.
employedfor locking the member, G, in,
loosely fits'a collar, g, and to this collar is pivoted one link of .a toggle joint, 9 the latter being operated by a rod, G. the rod is moved in one direction the collar, 9', is operated to shift the member, G, to-
hen
ward the driving pinion, B, and into mesh therewithfbut a reverse movement of the rod, G, operates to withdraw said member, from engagement with said driving pinfrom'the driving pinion operates simultaneously to move said member into fixed relation with a locking device for the purpose of locking themember, G, against rotation Any suitable means maybe position, but as-shown, said member is provided in. one side with clutch teeth, It, which are adapted, to interlock with clutch teeth, it, the latter being provided on one side of the gear casing or frame, E, as shown more.
' Inember,, F, or that surface which is in The opposing rclationfl -to the member, G.
I, is in neshat all times with the gear,
-driven gear, I), and said gear, I,is mounted for rotation on an axis simultaneously with its travel with .the member, I", whereby said pinion, I, is capable of two motions, one
the clutch teeth of the frame or casing, E iiiut'uby engaging the member, G, with'the motion being with the member, F, around the axis-thereof, and the other on the axis of the gear, I. WVhile the gear, I, may beconnected in any suitable way to the member, F, itis preferred to provide said gear, I, with an enlarged opening, 2', and to loosely fit said gear on.on'e.bo1t, j, of a series of bolts which are employed to rigidly attach a plate, J, to the member, F. The plate, J,
is parallel to the member, F, and the gears,
D, I, are between said plate, J, and the member, F. It will be understood that the plate, J, is fastened rigidly to the member so as to 'rotate therewith, and, further, that the plate confines the transmitting gear, I,-
7 in proper relation sidewise to the member, F.
The member, G, is provided with an internal gear, K, which is always in mesh with the transmitting pinion, I. The internal gear is formed by a rim having internal teeth, said rim being shown as integral with the membc'r,-G, although the internal gear may be made in a separate piece and secured in an approved way to said member, as will be readily understood. The widthof the internal gear, K, exceeds the sliding travel which may be given to the member, G, and said internal gear extends from that face of the member, G, which is opposed to the member, F, said internal gear being of less diameter than the members,-F, G, whereby the internal gear is adapted to mesh at all times with the transmitting pinion, I.- It will be understood that the member, G, is provided with bevel teeth, G near its pe riphcry and, on one-face thereof; that said member is provided further with the internal gear, K, within the bevel teeth thereof,
as shown in Fig. 4, and that on its other face, said member, G, is furnished with the clutch teeth, It.
The operation is as follows: With the member, G, in the position of Fig. 1, the teeth, It,
cngagewith the teeth, It, and said member, G, IS. fixed or locked to the casing or'fraine, E, but the internal gear, K, is in mesh with with the driven gear, D, on the driven shaft, C. The motion of the shaft, A, is communicated by the driving pinion, B, to the member, F. The gear, I, travels with the member, F, around the shaft, C, and said member, I, meets with resistance afforded by the fixed internal gear, K, whereby the gear, I, is rotated for the purpose of rotating the driven gear-,l), with increasedpower, but at reduced speed relative to the driving shaft, A. I I
\Vhen it is desired to increase the speed of the driven shaft relative to that of the driving shaft, the rod, G, is operated to more the l'heniher, G, from engagement with driving gear, B, the internal gear, K, re-
. the' pinion, I, and said pinion is in mesh maining in mesh with the transmitting gear,
- I. The member, G, is free to rotate, and the two members, .F, G, are rotated simulta-- neou'sly and in opposite directions to each other by. the-driving pinion, B. The internal gear, K, rotateswith the member, G, in one direction, whereas the transmitting pinion,- I, is carried on the member F so as to be movable bodily therewith and in a corresponding direction, but as said members, F, G, rotate in-opposite directions, it follows that the gear, L is rotated bythe internal gear so as to drive the gear, D-, and the shaft, C, in therequired direction and at an increased speed. The speed is multiplied'by the opposite rotation of the members, F, G, and by the ratio of the gears,
K, I, to each other, and of the gear, I, to
the gear, D, the result of which is to mai shown in the drawings as being loosely confined in position between the internal gear, K,a'nd the driven gear, D; and, furthermore, the stud, j, on which the transmitting gear, I,-is'mounted is eccentric to the 1maginary axis of said gear, I, said eccentric Stud, 7', being close to the toothed periphery of thedriven gear, D, as shown in Fig. 3.
The pitch line between the intermeshing gears, D, I, is much closer to the center of the stud j,'tha -n the pitch line between the intermeshlng gears, K, I, whereby the gear,
K, is adapted.- to exert increased leverage on the gear, I, forthe purpose of increasing the power exerted by the internal gear on the transmitting pinion, I, which increase in power .is communicated to the driven gear, D. The ear, I, is adapted to shiftits position aroun the stud, 7', so as to preserve the relation of the gears, D, I, as shown in Fig. 3, and this gear, I, is thus adapted to turn-onan axis which is eccentric to the ima 'nary axis thereof. Said. gear, I, is con ned in position by its engagement with thegears, K, D, and between the plate, J,
and the member, F, whereby the gear, I,'is
kept from working out of positi tated by the internal gear, K.
Having ,;thus fully described the inven- -t1on, What I 'c'l'aim ,as new, and desire .to
' cure by Letters Patent is:
'- 1. Ina transniisfsio mechanisnna driving member, two members "e'ngagin directly w th the driving member, said m mbers beon when roing rotated simultaneously and in opp'o, directions to each other by said driving member, a driven member, and an '1nterm-.
diate member carried by oneof-thct we aforesaid members, saidinterinediate member engaging with -theother-of the, two aforesaid members and with the 'driv eni member. 1 i
2. In a transmission mechanism, a bevel gear, a second gear driven thereby, api ii'oii carried by said second gea r,i a drivenolement, a driven gear mounted on said ficles' ment and in mesh with said piiiion,]a t',l iii rd* gear adapted to-mesh with the bevel gear, and an internal gear fixed relativelyto the, third gear and meshingwith said pinion as to form a rack therefor, said third gear being shiftable into and out. of meslrwith said bevel gear. I
3. In a transn'iission mechanism,adriying driving member and adapted to r v in opposite (llICCtlODS SlmUlianCmi yr H by, a driven element, a' driven member;
element,-'a driving member operated thcl (3' by, two members engaging directl u vtgh :--I'
thereon, and means intermediate the [two said members for operating the'driven nienif ber. 4. In a transmission mechanism, a driving element, a driving member operated thcie'-" by, two members engaging directly with the. driving member and adapted to be driven in opposite directions simultaneously there by, one of said members being provided with a pinion and the other with an internal gear,
a driven element. and a driven gear meshing with said pinion, said driven gear being carried by the driven element.
5. In a transmission mechanism, a driving gear, two members adapted to be simulta neously rotated thereby and in opposite directions to each other, an internal gear on one of said members, a. driven gear, and another gear carried by the other of said two members and meshing with "said, internal gear and with the driven gear.
6. In a transmission mechanism, a driving gear, two members adapted to be driven in opposite directions thereby, an internal gear on one of said members, a driven gear, another gear carried-by the other of said two members and meshing with said internal gear and with the driven gear, and means for-adjusting one of said two members from engagement with said driving gear.
V 7. In a transmission mechanism, a driving gear, two members adapted to bedriven in opposite directions thereby, an internal gear on one of 'said. members, a. driven gear, another gear carried by the other ofsaid two members and meshing with said, internal gear and with the driven gear, means for ad ustingone of said twomembers from engagement with said driving gear, and means for locking said member. and the -in .ternahgear from rotation when free fro m the driving ge'a'r.
8. In a transmission mechanism, a driving gear, two members adapted to be driven in opposite directions simultaneously by said driving gear, one of said members being norma ly in mesh with said'driving gear, means for shiftin the other member from engagement with t e driving gear, means for ocking said member against rotation when free from said ear, an internal gear fast with said shiftahle member, a gear on the other non-shiftable member adapted to mesh with the internal gear, and a driven gear in mesh with said gear on the nonshiftable member.
. 9. In a transmission mechanism, a driving gear, two members adaptedto be driven in opposite directions simultaneously by said 'riving gear, one of said members being normally in mesh with said driving ear, means for shifting the other memberrom engagement with the driving gear, means for locking said member against rotation when free, from said gear, a driven gear, a transmitting gear carried by the non-shiftable member and normally in mesh with said transmitting gear, and-an internal gear to the axis of said transmitting gear, and an internal gear, said transmitting gear bein normally in. engagement with the interna gear and the driven member.
11. In a transmission mechanism, driving and driven gears, a third gear normally in mesh with the drivin gear, a transmitting gear carried on the tlnrd gear and normally in mesh with the driven gear, said transmit-.
ting gear being movable freely on an eccentrieally located axis, and an internal gear meshing with the transmitting gear, the latter being confined shiftably in position between the driven gear and the internal gear.
In testimony whereof I have signed my name to this specification in the presence of I two subscribing witnesses.
ELMER SCHOONMAKER.
VVitnesses-z MARGARET C. POWELL, II. I.. BERNHARD.
US58750810A 1910-10-17 1910-10-17 Mechanism for transmitting speed and power. Expired - Lifetime US991754A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3273421A (en) * 1963-06-04 1966-09-20 Maytag Co Timer transmission
US4063470A (en) * 1976-09-10 1977-12-20 Borg-Warner Corporation Compact planetary gear assembly
US5520065A (en) * 1994-03-22 1996-05-28 Dresser Industries, Inc. Incremental speed reduction unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3273421A (en) * 1963-06-04 1966-09-20 Maytag Co Timer transmission
US4063470A (en) * 1976-09-10 1977-12-20 Borg-Warner Corporation Compact planetary gear assembly
US5520065A (en) * 1994-03-22 1996-05-28 Dresser Industries, Inc. Incremental speed reduction unit

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