US1185887A - Speed-regulator. - Google Patents

Description

Pz'imliwi 2me ii, 1816.

INVEN TOR J. A. DOUGLAS. SPEED REGULATOR. APPLICATION FILED AUG,3I. 191s.

Patented Juno 6, 1916.

4 SHEEYS SHEET 2' J. A. DOUGLAS SPEED REGULATOR. APPLICATION mso AUG.3I. 1914.

Patented June 6, 1916.

4 ShECTS SrIEE 1 M'IIIIIII/Ib J A, DOUGLAS. SPEED REGULATOR APPLICATION FILE? AU\i.3l. 191

l 9 1 85.887. liifirlmii Mm iiis,

WITNESSES LLL UlN'TTED STATES PATENT OFFICE.

JAMIE-S ATKINSON DOUGLAS, OF WINNIPEG, MAN ITOBA, CANADA.

SPEED-REGULATOR.

Application filed August 31. 1914.

To all who), it may con ern lie. it known that l. Janus Armxsox l)oioi..\s, of the city of \\'innipeg. in the Province of l\lanitoba. Canada, have invented certain new and useful lmprove ments in Speed-Regulators. of which the following is the specification.

The invention relates to im n-ovements in speed regulators and the obje t of the invention is to provide a mechanism by means of which a driven shaft can be driven by a drive shaft at any speed from zero to maximum positive and zero to maximum negativ aiid can be retained operating at any constant selected speed as desired by the attendant.

A further object of the invention is to provide a mechanism which will allow of the above range of speeds in the driven shaft without the use of varying speed gears as are customarily employed where a range of speed in a driven shaft is required.

Vl'ith the above objects in view the invention consists essentially in the arrangement and construction of parts hereimifter more particularly described and later pointed out in the appended claims.

Figure 1 represents a plan view of the complete machine. the top of the framework being removed. Fig. 2 is a longitudinal ver tieal sectional view centrally through the machine. Fig. 3 represents a rear view of the slotted plate and adjoining parts. certain of the parts being shown in vertical section. l ig'. 4 represents an end view of the machine, the front bearing being shown in dotted outline. Fig. 5 represents a verti cal sectional view through the nniehine. the section being taken in the plane denoted by the line X' X' and lookin in the direction indicated by the arrow a Fig. 2. Fig. (3 represents an enlarged detailed vertical sec tional view through t disk and associat d parts. Fig. 7 represents a vertical sectional view through the machine. the section being taken in the plane denoted by the line Y-Y and looking in the direction indicated by the arrow If Fig. 2. Fig. 8 is a vertical sectional view through a portion of the slotted plate. the section being taken in the plane denoted by the line ZZ' Fig. 8.

ln the drawings likechal'aeters of reference indicate correspomling parts in each figure.

1 represents a suitable base plate mounted within the Specification of Letters Patent Patented J one 6. 1916.

Serial NO. 859.394.

on a permanent understrueture 3. 5. l and 5 represent similar standards permanently fastened to the base plate by bolts (3 am presenting alined bearings T, 8 and 9 for parts later described.

10 represents a substantially rectangular open stationary framework erected on the base plate and located between the standards 3 and l. This framework comprises suit ably (Ullllt 'lttl side bars l and It) and a connecting cross bar It).

11 is a guide bar elevated a ove and se cured to the base plate and passing in a direction across the machine. the said bar being contained within the plane containing the cross air 10 Directly beneath this guide bar the base plate is slotted as shown at 12, the slot aecommodating eertain parts later described.

1.; is a horizontally disposed substantially rectangular guide frame contained within the framework and carrying a pair of upwardly and downwardly projecting guide rods It and 15. the guide rods being slidably received within the bars 10 and 11 and ha ving their extremities projecting beyond said bars.

l is a vertically disposed substantially rectangular guide frame located in the open renter of the framework and provided with horizontally disposed extending guide rods 17 and 18 which are carried slidably by the side bars 10 and 10- of the frame and have their ends projecting beyond the said bars. The guide frames are identical in eonstruc tion and are arranged so that one is immediately to the side of the other with the adjacent faces bearing slidably one on the other. The rods H and 15 are alined vertically while the rods 17 and 18 are alined horizontally and they are arranged such that if their inner ends were projected they would intersect at a point alined with the longitudinal axis of the several bearings, hereinbefore mentioned, of the standards.

In is a Hat square carrying block mounted within the horizontally and vertically (lisposed portions of the guide frames as best shown in Fig. 2 of the drawings. According to the above construction the position of the carrying blook can be varied within the framework as the guide 'fl'ttll'lQS will slide to accommodate the movement of the block. -20 is a eireulafldisk rotatably mounted carrying block.

tively.

21 is a drive" shaft rotatably mounted in the standards 4 and 5 and having the inner end thereof terminating at the disk.

22 is a drive pulley permanently secured to the outer end of the shaft and 23 is a collar 'otliers1ots and passing in a direction from the center of the plate to the periphery thereof. 9

29, 30 and,31 are guide pins projecting from the face of the disk and received slidably within the slots 26, :27 and 28 respec- The pins 29 and 30 are supplied with retaining washers and 32 and 32' held in position against the. outer-face of the plate 24 by means of screws 33. The pin 31 is supplich with an enlarged shoulder 34 hearing also against the outer face of the plate and is fitted further with an enlarged head 35 supplied with a screw threaded opening 3 for a )ur )ose later ex )lained. These )ins form a connection between the disk and the plate and owing to the pins being restrictei'l in their movement. within the slots it will be seen that the disk can only he adjusted in a radial direction in respect to the plate.

37 is an inner slcevc mountcd rotatably on the shaft '21. betwe n the bearing 8 and the outer face of,thc plalc. The sleeve is supplied at the outer end with a gear wheelilR and at the inner end with a bevel wheel 39, the arrangement being such that when the gear wheel is turned the bevel wheel is caused to rotate through the sleeve connection.

40 is an outer sleeve rotatably mounted on the inner sleeve and having the inner end huttcd against the face of the bevel wheef 39 and the outer end supplied with a gear wheel 41 and an associated bevel wheel 42. the outer faces of the gear wheel bearing frictionally against the inner face of the wheel 38. The bevel wheels 39 and 42 are similar and are disposed directly opposite to one another and are botlr continuously in mesh with a bcvcl pinion 43permanently mounted on the inner end of a screw threaded shaft 44 which threads through the opening :36 in the head 35 hereinbcfore mentioned.

45 is a bearing secured to the rear face of the slotted plate and carrying the inner end of the shaft 44'. Th s bearing is constructed so that the shaft can rotate freely but cannot move endwise.

46 is a counter shaft located beneath the drive shaft 21 and parallel with the same,

said counter shaft protrudingthrough the standard 4 and having the inner end carried by a bearing plate 47 secured to the standard and the outer end mounted in a specially constructed friction member 48 fastened to the standard by a pin 49. r

50 is frictiondisk having the faces thereof oppositely coned as ndicated at 50 and .50 The fri tion membcr 48 is supplied with opposing coned recesses 51 and 52 designed to receive the oppositely con ed faces of the disk upon the counter shaft being shifted endwise as later explained. The inner end of the counter sh: ft carries a pinion 53 designet to engage with one or other or both of the gear wheels 38 and 41, depending on the shifted position of the counter shaft.

54 is a pivoted controlling lever having the upper end thereof forked and spanning the outer end of the counter shaft, the forked end operating between two permanent collars and 56 fastened to the said shaft.

By the above arrangement it is possible to change the position of the disk radially in respect to the slotted plaie while the drive shaft is being rotated by s mply manipulating the lever. If the lever be thrown to the position shown in Fig. 2 of the drawings to bring the coned face 50 into engagement with the coned recess 52, the pinion 53 is engaged with the gear wheel 38 and accomplishes the object of locking said gear wheel against rotation, this being due to the frictional contact between the cone-tdisk and the member 48. Accordingly when the drive shaft is rotat d the pinion 43 is controlled by the bevel heel 39 which is obviously locked when the gear wheel 38 is locked. In the continued right hand rotation of the drive shaft the locked bevel wheel 3!} will have the effect of turning the bevel pinion 43 in a direction which will cause the-head 35 to draw in on the screw threaded rod with the resrlt that the disk will be drawn in toward the center of the slotted plate. 0n the other hand if the lever be thrown to the opposite position to that shown in Fig. 2 to bring the pinion 53 into engagement with the gear wheel 41 and the coned face 50 into engagem nt with the coned recess 51 then the gear wheel 41 will be locked against rotation in respect to the drive shaft as will also the bevel wlt'eel 42. In the continued right hand rotation of the drive shaft the pinion 43 will then operate on the bevel wheel 42 in a manner such that the screw shaft all will force the head 35 outwardly and accordingly pass the dish in re'radial direction toward the periphery of the slotted plate. Further if the lever be thrown to a central position to engage operate'with parts later'described.

the pinion with both of the gear wheels 38 and t1. then therewill he no-relative movement allowed the gear wheels with the result that the pinion 43 will be locked between the bevel wheels 39 and 42. In the rotation of the drive shaft there will ac cordingly D0110 movement transmitted to the screw shaft -14. The disk will conse quently remain in whatever osition it occupies at th instant the lever is brought to central position.

The detailed construction of, the above explained parts for changing the position of 'the disk in respect to the plate, while rotating the shaft could be readily modified without departiiig'in the least from the spirit of the invention. They are only shown as a means for accomplishing the radial adjustment of the disk. In actual practice in some machines the locked gear construction could be entirely dispensed with and a crank applied on the outer end of the screw shaft. This would allow of the adjustment but itwould be necessary to stop the rotation of the shaft to effect the adjustment.

is a driven shaft rotatahiy mounted in the bearing provided in the .iandard 3. This shaft is alined with the rive shaft and is supplied at the outer and with a pul ley 58 and at the inner end with a bevel wheel- 59,the pulley and wheel being fixed to the shaft.

60 is a controlling wheel-i,=otatably mounted on a permanent pin 6] extending from the inner face of the disk. For reasons later explained this pin is located slightly eccentric to the center point of the'disk, this being best shown 'in Fig. I} of the drawings Wherein c representsthe center point of the disk and 9d? the center point of the pin. The contizollingwheel embodies in its structure a gear wheel 62 and a bevel wheel 3 which co- 64-is a boss permanently secured to the extending end of the pin and carrying an.

opposing pair of arms 65 and 65, the arms being secured-t0 the opposite sides of a substantially rectangular sliding frame 66 monntedon a rectangular carrying block (37, the block being rotatably mounted on an extending-boss 67 formed as a part of the standard 3 and the bearing 9.-

is.-a square: cross shaft having the ends rounded and rotatably mounted in bearing arms 69 and 69 extending inwardly from the ends of the frame 66. 1 The cross shaft is disposed atright angles to the shaft 5'7'and inu tersecting the projected" axis of'the same. It

carries a sliding pinion 70. which is held constantly in mesh withthe bevel wheel 59 by the action of an arm 71 extending fronrthe carrying block 67. In the actual construction it will be seen that the forward end of the latter arm receives rotatably a boss extending free to move endwise in respect to the pinions but will drive the tion. 72 is a second pinion permanently secured to the cross shaft and opposing the pinion 70. The pinion 7'2 meshes continuously with the bevel wheel 63 of the controlling wheel. In this connection it is pointed out that while the controlling wheel may change its position as controlled bythe pin, in a radial direction in respect to the common longitndinal axis'of the drive and driven shafts, still the pinion 72 will always remain meshed with the controlling' \\flieel as the sliding frame 66' carrying the'sq'uare shaft which carries the said pinion nioves with the pin to which it is permanently attached. as already explained. T y I 73 is a circular ring located in advance of the carrying blocklf) and peri'nan entl'y secured to the same by screws 74.. 'lhefri ng is arranged concentric to the disk. I 75 and 76 are opposing vertically disposed pinion in any positoothed locking dogs located attheinner their inner ends slidably mounted in further brackets 81 and 82 extending fromtheguide frame 13. 83 and 84 are further o posing, horizontally disposed toothed locking located at the inner ends of extending shanks 85 and 86 having their outer'ends slidably mounted in brackets secured to the outer ends of the rods 17 and 18 and similar to those 79 and 80 and their inner ends slidably mounted in further brackets extending from the guide frame 16 and similar to those 81 and 82. The dogs are contained in the; same vertical plane as the gear Wheel 62 and the carrying shanks if projected are designed to intersect on the common longitudinal axis of the drive and driven, shafts.

Each shank carries a sliding sleeve 87- which having their outer ends bearing against the sleeves 87 and their inner ends engaging with stop collars 92"held by pins 93*passd through the shanks. V i

94 is a counter-balancing Weight having" the base thereof dovetailed as indicated at. 94 and slidably received within a-c0mple= mentary channel 95 formed in the outer face parts of the machine as controlled by the adj usting shaft H. It will be seen that as the pinion 96 meshes with the same wheels as the, pinion 43 the shaft 91 \v-illbe turned each time the shaft 44 rotates ivith the result that the counter-balancing weight will be forced in and out on the shaft 97 an equal amount to the adjustment given the head 35 and associated parts.

In Fig. 4 of the drawing the position of the moving parts has been changed from the position occupied by them in the other figures. This change of position is made so that the operation and movement of the parts may be better understood.

To understand the operation of the de vice I wish to point out that there are what might be termed three controlling positions which the pin carrying the controlling wheel may have. The first position that in which the screw shaft 4-1 has been adjusted so that the center of the pin 61 lies ,on the=longitudinal axis." of the drive shaft. The second positionis th at when by the adjustment of the said scrcwshaft the pin 61- is brought to a position wherein it is passed in one direction away from the-axis of the drive shaft and the third position is that wherein; the pin has been adj ustedbv means of the said screw such that it is passed in the opposite direction from the center point or axis of the drive shaft. To

understand this. reference is made to Fig. 3. of the drawings wherein it will be seen that if the screw be turned in a proper di: rection the pin 61 as shown in dotted out line will be brought inuntil it is concentric to thedrive. shaft lhis is the first position above referred to. The position which the said-pin occupies in Fig.3 is one of the :VAIIOUS positions which it may have in' the second controlling position referred to above. If the screw be turned in a-proper direction to pass the center of the pin 61- to the other: side of the drive shaft to that shown in- Fig. 3, then the said pin will occupy one of the various adjusted positions which it may have when in the third controlling position above'described. .A-ssuming then the drive" shaft rotated' at a const'ant speed. In the first or central position dt'thepin the driven shaft is. rotated at a tion of the drive shaft.

the speed of rotation depending entirely on the ratio of the wheels 63, 72, -70 and 59. In the second position the driven shaft will be rotated at aspeed slower than in the first position, the speed of the driven shaft decreasing each time adjustment is made to pass the pin 61 farther out from the center point. In the third position of the pin, that is, 4 on it is at the opposite side of the center point of the drive shaft tojhat shown in Fig. 3 the'speed of rotation of the driven shaft will be higher than in the first position, the speed increasing eaclitime an a -j ustinent is made to pass the pin away in a left hand direction (see Fig. 3) from the center point of the shaft.

Inthe actual machine ICan so adjust the pin 61-that the driven shaft, can be standing still -whiie the drive shaft is rotated, that is, the driven shaftwill liave zero speed and upon further adjustment of the pin in a right hand direction pa thecenter of the drive shaft (see-Fig. 3) I can effect reverse rotation of the driven shaft, increasing the speed in the reverse direction from zeroto a maximum speed equal to the speed of rota- Consequently with this machine, with a constant speed of rotation in the drive shaft, I am able to obtain any speed in the driven shaft in a forward direction from zero to maximum and a respeed from zero to the constant speed of rotation of the drive shaft. Further I can maintain any chosen or selected speed in verse rdtation of the driven shaft at any the driven shaft in either the forward "or rc- I verse rotation by bringing the lever 54 to a central position once the selected speed is obtained. In the centralposition'of the lever the pinion 53 is meshed with'both the gear wheels 38 and 41. said gear wheels are lbclred so that they rotate together. The result'of this is thatno rotary motion is imparted to the shaft 44'as the bevel pinion 43"automatically becomes. .locked'betwecn the bevel wheels 39 and 4'2 and as the plate 24, turns withthe driveshaft the pinion 43 swings around the shaft but does not rotateand in swinging carries with it and consequently "rotates both the bevel Accordingly the wheels 39 and 42. The gear wheels 38 and 41 acts to give, in the adjusted positions of the pin 61, the varying speedsof rotation in the driven shaft, graduating as selected from maximum positive. forward to zero and from zero to m .a ximum negative .or' reverse. In.-.the first position of the pin, that is, with- P ddlustdlso t t it lies onthe center I will rotate} with the bevelwheels so that the I counter shaft--46 is rotated. In this position ofthe driveishaft the controlling wheel is obviously centered on the drive shaft. Further as motion is imparted to-the drive shaft the disk is compelled to turn with the plate 24 through the action of the pins 29, and 31 and it, the disk, aetuallyswings in an eccentric. manner as its center point c is eccentric tothe point d which is at this-time lying onthe longitudinal axis of the drive shaft. \The eccentric swing given the disk while rotating with the shaft causes the carrying block to move and its movement is accommodated by the guide frames 13 and 1.6, which move one laterally. and the other vertically, therods sliding in the framework.

Asthe ring is fast to theblock it moves with it and effects through ;-the links an inward and outward movement-of the slumkswith the resultthat the dogs are brought into and out of engagement with the wheel (52-. Only one do engages with the wheel at a time,

but it to be understood that as one dog 7 18 passing out of engageineut the following dog is passing in. Accordingly in the central position of the pinthe controlling wheel is positively locked by the dogs against rotationon the pin "lhe result lS tllul; the p m ion 72 is rotated around the bevel wheel;

( (33 and in rotating carries with it the shaft (38 which in turn operates to rotate the shaft 57. The speed developed in the driven shaft is accordingly atthis time entirely. dependent on the ratioof the wheels (53 72,70 and 59.

When the pin (31 is in any one of the second adjusted positions, that is when it .is to the right of the center point as shown in Fig. 3, there is a rotary motion on the pin impartcdto the controlling wheel by the moving dogs, it bemgrotated 1n the same direction as the drive shaft \Vltlrtlle result that the wheel 72 is turned slower and drives the cross shaft slower and so decreases the speed of rotation of the driven shaft. In this connection I might remark that the speed of rotation of the controlling wheel in the above forward direction on tlie pin in creases directly in proportion to the distancewhich the pin'bl is adjusted in a direction away from the center point of the drive shaft, and accordingly the speed of rotation of the driven shaft, forward direction decreases directly in proportion to the increased speed of the controlling wheel on the pin. This action is so; positive, the driven shaft can be brought to zero speed and then upon further adjusting the pin in an outward direction a reverse rotation can be-obtained in the driven shaft, the reverse speed increasing upon increased adjustment until it is equal to the constant drive speed of the drive shaft. In the third controlling position of the pin 61, that is, where it is to the left of the center point of the shaft, (see Fig. 3) the controlling wheel is rotated in a reverse direction to the drive shaft by the moving dogs. The result is that the speed of the pinion 72 is increased as it is swung around the controlling wheel and accordingly the shaft 68 rotates faster andin' rotating drives the-driven shaftat a faster speed;

, The action of the dogs in effecting the rotations above mentioned, forwardxand re verse, of the controlling wheel will be best understood if reference be made to Fig. 4

wherein the pin is shown as-adjusted con siderably eccentric to thedrive shaft. 'In" the said figure it will be seeii that the dog 84 1S engaged with the wheel. 'As the drive shaft rotates and the pin with attached parts swings around the drive shaft the controlling wheel \Vlll. be ca used to rotate in a forward direction for the reason that the wheel (Bis engaged with the dog FA. the instant the (it ,1 Se clears rue a dog 7.3 engages w-itirthe wheel and swinging movementiof the wheel will.

pinrotates it. The dogs 76 and follow ing engage with and pass away froii': the wheel in a like manner! It isto he noted. that at no time is the wheel *free as it is at all times engaged by one dog. i-\ecordinglyits movement in-so far as rotating around .i

the, pin is concerned, is constrained and controlled directly by the dogs The action of the dogs on the controlling wheel is same when the pin carrying-the contreiling' wheel is in the third position above men-- The springs 91 serve to cushion.

l. The combination with suitably mount ed alined drive and driven shafts, of a, plate permanently secured to the drive shaft and rotatable therewitlna pin carried by the plate and adjustable diametrically in. re-

sport to the longitudinal axis of the shaft,

a controllingwheel rotatably. mounted on the pin and embodying in its structure azgear wheel and a bevel wheebaneansaengageable with the gear wheel in the various adjusted.

positions of the pin designed to reflect and control the rotary movement of the controlling wheel on the pin in the rotation of the drive shaft and a driving connection between the bevel wheel and the driven shaft, as and for the purpose specified.

2. The combination with suitably mounted aliued drive and driven shafts, of a plate permanently secured to the drive shaft, a disk carried by the plate and adjustable diametrically in respect to the longitudinal axis of the drive shaft, a pin extending from the disk, a controlling wheel mounted rotatably on the pin and embodying in its structure a gear wheel and a bevel wheel, a carrying bloc; mounted. on the disk, slidable guide frames carrying the block, a ring concentric to the disk and secured to the block, vertically and horizontally disposed pairs of slidably mounted shanksarranged radially in respect to the longitudinal axis of the drive shaft, links connecting the ring with the shanks and effecting the movement thereof in a radial direction. toothed dogs located at the inner ends of the shanks and engage-able withthe gear wheel and a driving connection between the bevel wheel and the driven shaft, as and for the purpose specified.

The combination with suitably mounted alincd drive and driven shafts, of a plate pe manently secured to the drive shaft, a disk carried by theplate and adjustable diametrically in respect to the longitudinal axis of the drive shaft, a pin ex tending from the disk a controlling wheel rotatably mounted on the pin and embodying i:i-its structure a gear wheel and a bevel wheel. a block receiving the disk, a sta tionary frarzze structure, horizontally and vertically disposed guide frames carrying the block, pairs of horizontally and vertically disposed guide rods extending from the respective frames and shdably 1no -nted in the framework, a ring arranged concentric to thedisk and permanently secured to the block, pairs of slidably mounted shanks carried by the respective guide rods and guide frames, said shanks being arranged so th t they radiate in respect to the longitudinal axis of the dri e shaft, s eeves slid- 4 ably mounted on the rods, links connecting the slecves with the ring, pins extending from the outer ends of the shanks and engaged with the outer ends of the sleeves, pinspassed through the bodies of the shanks-f spiral springs disposed on' the shanks be tween the latter pins and the inner ends of the sleeves, toothed dogs permanently mounted on the. inner-ends of the shanks and engageable in the rotation of the drive shaft with the gear wheel of thecontrolling wheel and a driving connection between the bevel wheel a'nd'the driven shaft. as and for the purpose specified. 4. The combination with suitabl 'mounted alined drive and driven sha ts, of a plate permanently secured to the drive the presence of shaft, a disk carried by the plate and adjustable diametrically in respect to the Iongitudinal axis of the drive shaft, a pin extending from the disk,-a controlling wheel rotatably; mounted on the pin and embodying in its'strueture a gear wheel and a bevel wheel, a block receiving the disk, a Sta-- tionary frame structure, horizontallyand vertically disposed guide frames carrying the block, pairs of horizontally and verti cally disposed guidc rods extending l. om the respective frames and slidabl-y mounted in the frmuework. a ring arranged concentric to the disk and permanently secured to the block, pairs of slidably mounted shanks carried by the respective guide rods and guide frames, said shanks being arranged so that they radiate in respect to the longitudinal axis of the drive shaft, sleeves slidably mounted on the rods, links connecting the sleeves with the ring, )in:; extending from the outer ends of the shanks and engaged with thc-outcr ends of the slee\es, pins passed through the bodies of the shanks, spiral springs disposed on the shanks between the latter pins and the inner ends of. the sleeves, toothed dogs perinanently mounted on theinner ends of the shanks and engageable in the rotation of the drive shaft and the gear wheel, with the gear wheel of the controlling wheel, a be'vel wheel secured to the innei end of the driven shaft, a carrying block rotatably mounted on the driven shaft, a sliding frame mounted'on the carrying block, a square cross shaft .having theendsthereof 'isarried rota- 'tabiy by the sliding frame, a bevel pinion permanently secured to the, cross shaft and meshed with the bevel wheel of the con trolling wheel, a second bevel pinion slidably mounted-"on the crossshaft and meshed with the bevel pinionat the inner end of the driven shaft, and an arm secured permanently to-the latter, carrying block and holding the latter bevel pinion againstsums ATKINSON DOUGLAS.

S; GO LD.

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