US783557A - Power-transmitter. - Google Patents

Description

No. 783,557. PATENTED FEB. 28, 1905. C. P" H. VARY 6/: H. D. HUTGHESON.

POWER TRANSMITTER.

APPLIOATION' FILED DEG. 9,1903.

Patented February 28, 19015.

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CALVIN P. H. VARY AND l-IlfilftMOlt l). IIUITUHESON, OF NEVVAHK, NEW YORK.

SPECIFICATION forming part of Letters Patent No. 783,557, dated February 28, 1905.

Application filed December 9, 1903. Serial No. 184,370.

To all whom it may concern.-

, Be it known that we, CALVIN 1. ll. VARY and l-lnmuon l). lln'ronnson. citizens of the United States, residing at Newark, Wayne county, New York, have invented certain new and useful improvements in Power-'lransmitters, of which the followingis a full, clear, and exact. description.

Our invention relates to powertransmit ters, and more particularly to powcr-transmitters having means for speed regulation and means for reversing the san'ie and also for throwing the same in and, out of gear.

To that end our invention consists in the employment of the mechanism hereinafter described and illustrated; and in the description and illustration we have shown the same as applied to the driving mechanism of a motor-vehicle as a typical use of the same. Since, however, our invention is capable of much wider application, we do not wish to limit ourselves either to the particular use or to the particular construction herein shown and described, since from the description and illustration herein had a person skilled in the art may readily adapt the same to analogous uses or reform or modify the particular construction as the case may require. Furthermore, it will be readily understood that where it is desired to employ this invention with two motors,especially in a motor-vehicle, the same may be placed side by side and the mechanism herein described simply doubled up, the two motors running in reverse directions, each apparatus driving its respective wheel, and thus avoiding the necessity of a differ-e171- tial gearing.

Vi e have also shown and shall claim certain attachments and improvements in connection with said main invention for operating a brake upon the driven mechanism when thrown out of operative contact with the driving mechanism.

.lte'ferring to the drawingsherewith, Figure l is a side elevation of our invention. Fig. 9. is a plan view. Fig. 3 is a detail section on the line a: a: of Fig. 2.

1 1s a frame or base upon which the mech- This frame may be of any anism is mounted.

desired form ol construction so long as the same presents su liicient strength and rigidity.

2 is amotor mounted upon a frame 1, which is continuously driven and which has a continuously-driven fly-wheel 3. This fu -wheel 3 is provided with the friction -surface i, which may be made of any desirable material.

5 is a disk or wheel mounted upon a shaft 6, which shaft is at right angles to the shaft carrying the iiy-wheel 3, and said wheel 5 is so positioned as to be capable of engagement in frictional contact with the frictioirsurface of the wheel 3.

For the purpose of brevity we shall hereinafter designate the wheel 3 and its frictionsurfacee as the driving-disk and the disk 5 as the driven disk.

The driven disk 5 is mounted slidably upon the shaft 6, which said shaft has a splinegroove 7, which engages a spline or feather within the hub of the disk 5. Upon the hub of the disk 5 is mounted a collar 8, within which the hub of said driven diskis free to rotate and by which it is held against axial movement in either direction. Secured to this collar by pivots is a bifurcated arm or yoke 9, which at its other end is mounted slidably upon a shaft 10. It will thus be seen that the driven disk by the application of force to the yoke 9 may be carried over the length of the shaft 6, and, consequently across the face of the driving-disk.

The shaft 6 is journalcd in bearings 11. and 12. The bearing 11. is secured to the frame 1 by a single bolt l3, which acts as a pivot, as hereinafter more fully described. The hearing 12 is mounted upon the frame 1 by means of a bolt 14E taking through the slotted opening 15 in the base of said bearing. This slotted opening may he in the frame instead of in the base of the bearing, and to prevent any movement of the bearing except longitudinal movement the bearing may be held to the frame by guides or grooves. This hearing 12, therefore, is capable of longitudinal movement with reference to the length of the frame, and as the shaft 6 is mounted in these two bearings movement of the bearing 12 longitudinally upon the base or bed 1 will cause said shaft 6 to swing pivotally upon the pivot holding the bearing 11 in place. This therefore eventuates in throwing the driven disk in and out of frictional contact with the driving-disk. Upon the outer end of the shaft 6 is mounted a sprocket 16 or other suitable means for transmitting the power from the said shaft to the wheel or other object to be driven.

The bearings 11 and 12 are provided with yokes, to which are pivoted arms 17 and 18. The other ends of the arms 17 and 18 are rigidly secured to the shaft 10, which is a hollow shaft and which contains within it the shaft 19 for the purpose hereinafter described. 20 is an arm also taking over the shaft 10 and at its opposite end is pivoted in a yoke of a block 2l,which block is slidably secured to the frame 1 by bolts 36 and 36 through slotted openings 22 in the base and the extension 2% of the base. This block 21 is held up to work by means of a compression-spring 23, which thrusts in one direction against a bracket rigidly secured to the frame of the machine and at its other end thrusts against an adjustable bolt, engaging an L upon an extension 2& of the base of the block 21. The arms 17 and 18, pivoted to the bearings 11 and 12, are sccured on the shaft 10, and the arm 20, pivoted over the shaft 10 at one end and at the other to the block 21, constitute a toggle-joint, which when in its working position forms a brace to the sliding bearing 12 and yielding only through the spring 23.

Mounted upon the shaft 19, which lies inside of the shaft 10, is a lever 25, which at its upper end may be provided with a handle for hand use or, as shown, with a plate to be actuated by the foot and at its other end car ries on a stud a roller 26, which treads upon the upper surface of the bed 1 and which is of the proper diameter to come in contact with the under side of the arm 18 when said arm is in a horizontal position.

By referring now to the elevation of the drawings, it will be seen that when the lever 25 is thrown into the position indicated in broken or dotted outline the arms 17 and 18 and the arm 20 will be thrown into the position also shown in broken outline, and the driven disk will be withdrawn from contact with the driving disk, as shown in dotted outline, thus throwing the machine out of gear. It will be noted that the swing of the arms 17 and 18 and the corresponding swing of the arm 20 will result in a very slight pivotal movement of the shaft 6, the driven disk, and the shaft 10 upon the pivot 13; but it will be at once understood that such movement being only a minute movement, just sufficient to throw the driven disk off from the face of the driving-disk, no cramping of the arms which take over the shaft 10 will )ccur, since the ordinary freedom of a bearing of this character is ample to permit of the necessary movement. it will also be seen that when the arms 17, 18, and 20 are thrown down into their normal working position, (shown in full outline) the thrust of the spring will be quite suflicient, when properly adjusted, to hold the driven disk up to work with the driving-disk. The arms will be prevented from falling below a horizontal position by the roller 26, which treads on the frame and which lies underneath the arm 18. This roller should be in diameter equal to the distance between the top of the frame 1 and under side of the arm 18 when said arm is parallel with the frame. It will also be especially noted that the sprocket 16 or other means of transmitting the power being placed outside of the pivot 13 the pull on chain or belt will further tend to swing the shaft 6 upon the pivot 13 and hold the driven disk up to work with the driving-disk, and it will also be noted that as the driven disk is carried nearer the center of the driving-disk for the purpose of giving the motor greater leverage to carry a heavy load at a slower speed the longer arm of the lever between the driven disk and the sprocket or pulley will be shortened, thus giving the pull 011 the chain or belt a greater leverage to hold the driven disk. up to the driving-disk.

The arm 9 may be moved from side to side to increase or diminish the speed or reverse the direction of the driven disk by any desirable means. We have shown a simple method which is applicable to motor-vehicles, which consists of a cable 27 which passes around sheaves 28 and 29, which are vertically pivoted to the frame 1 and which also passes around a drum 30, which is mounted upon a hollow shaft 31, which takes over the steering-post 32 and which carries at its upper end a handlever 33.. The ends of the cable 27 are secured to the arm 9, and the cable is given one or more turns about the drum and centrally secured thereto to prevent slipping. it will be evident that movement of the lever 33 will rotate the drum and through the cable 27 will move the arm 9 in the direction desired. it will thus be seen that the change of speed is accomplished in the desired degree of q nickness or slowness, and the progress from a slow speed to a high speed, or vice versa, or even to reverse, is accomplished without any jump or shock to the machinery. Any suit able locking device may be applied to lever 33 or drum 30 to keep it in position.

For the purpose of stopping the driven mechanism quickly, when it is desired so to do, we provide a brake connection which is actuated by the throw of the lever 25, secured to the end of the shaft 19, as clearly shown in Figs. 2 and 3. On the opposite end of the shaft 19 is mounted a crank 3a, which will be rotated with the lever 25, as shown. This crank 34 carries a cable or chain 35, which connects with a brake mechanism of any desired formed. This cable is so adjusted as to slack that when the lever is thrown into the position shown in dotted outline in F 1 the crank 34 will not draw the cable tight to set the brake. ln this position, therefore, the driven mechanism will run free and the driving and driven disks will be out of contact. If new the lever 25 is thrown still far ther forward, giving it a third position, this further throw will cause the crank 34 to draw on the cable 35 sufficiently to set the brake. l n this manner a single short movement of the lever throws the machine out of engagement with the driving mechanism, and a single long throw throws it out of engagement and sets the brake, or one short throw will disengage the driving mechanism. and a second throw will set the brake. This gives the operator a wide range of control through a single lever.

l/Vhen it is desired todouble up the mechanism and drive each of the rear wheels of a motor-wagon independently, the only change necessary from the construction shown in the drawings is to duplicate the mechanism herein shown. This does away with the necessity of the differential gear in the rear axle. if the motors are imlependent of each other, the friction-disks need not be disturbed in their contact position in turning corners. if they are connected, sufficient slip will occur to pre vent the necessity of any device for discon-' nccting the inner wheel. it will also be understood that instead of the block 21 and the compression-spring 23 and the means described for connecting the same we may employ any other well-known methodas, for ex ample, by making the arm 20 of two telescoping or sliding members and interposing therein a compression-spring to perform the same function. It will also be understood that we may employ instead of the pivot 13 and the sliding bearing 12 two sliding hearings or two hanging bearings and an additional arm 20, positioned to act substantially in line with the arm 17, thus giving the shaft (5 a uniform movement at right angles to its axis, and while we do not wish to limit ourselves to the pivotal construction shown and described we recommend the same as a preferable construction, for the reasons above set forth.

Having thus described our invention and its method of operation, what we claim is 1. in combination with the frame of the ma chine, a driving-d isk and a driven disk, a shaft carrying said driven disk, a bearing carrying one end of said shaft pivotallysecured to the frame of the machine, a bearing carrying the other end of said shaft slidably secured to the frame of the machine, arms pivotally secured to said bearings, a shaft secured to the opposite ends of said arms, an arm for moving said driven disk axially, and mounted to slide on said last-mentioned shaft, an arm for moving said shaft carrying said driven disk, said arm being pivoted to said frame and to said shaft carrying the outer ends of said first-mew tioned arms, whereby parallelism between the axis of the driven disk and the said last-mentioned shaft is at all times maintained.

2. In combination with a drivingalisk and a driven disk means for moving the driven disk over the face of the driving-disk, a shaft carrying said driven disk, bearings carrying said shaft which carries said driven disk, one of said bearings being pivotally secured to the frame of the machine and the other mounted upon a guide on said frame which permits said shaft to swing in the plane of the axis of the driving-disk, an arm pivoted to said bearing, an arm pivoted to a rigid portion of the machine, a pivot engaging said arms, and means for moving said arms on said pivot, whereby the shaft carrying said driven disk is swung on said pivoted bearing to throw said driven disk in and out of ei'igagement with said driving-disk, substantially as and for the purposes set forth.

3. in combination with adriving-disk and a driven disk, means for moving the driven disk over the face of the drivingdisk, a shaft carrying said driven disk, a sliding bearing on said shaft, an arm pivoted to said bearing, a pivoted bearing on said shaft, an arm pivoted to said bearing, an arm pivoted mediately to a rigid portion of the machine, a shaft engaging all of said arms to form a toggle-joint and means for moving said arms by a transverse movement of said last-n'ientioned shaft, whereby said lirst-mentioned shaft is swung on said pivoted bearing to throw said driven disk in and out of contact with said d rivi ng-disk, substantially as and for the purposes set forth.

at. In combination with a driving-disk and a driven disk, means for moving the driven disk over the face of the driving-disk, a shaft carrying said driven disk, a sliding bearing on said shaft, an arm pivoted to said bearing, a pivoted bearing on said shaft, an arm piv oted to said bearing, an arm pivoted mediately to a rigid portion of the machine, a shaft engaging all of said arms to form a toggle-joint, and a lever pivotally connected to said arms and having one end capable of engagement with a rigid part of the machine and the other end manually operated, whereby said disks are thrown in and out of engagement, substantially as and for the purposes set forth.

5. In combination with a driving-disk and a driven disk, means for moving the driven disk over the face of the driving-disk, a shaft carrying said driven disk, a sliding bearing on said shaft, an arm pivoted to said bearing, an arm pivoted to said first-mentioned arm, a hearing or block pivotally secured to said lastmentioned arm and having a limited move ment parallel to the movement of said sliding bearing, a bracket rigidly secured to a fixed portion of the machine, an interposed spring for holding saidbearing or block up to its Work, and means for adjusting the force of said spring, substantially as and for the purposes set forth.

6. In combination With the frame of the machine, a driving-disk and a driven disk, a shaft carrying said driven disk, an arm for moving said shaft, an arm pivotally secured to said frame, a shaft pivotally engaging said arms to form a toggle-joint, a lever on said shaft, a crank on said shaft, and a brake-cable actuated by the movement of said lever moving said crank, substantially as and for the purposes set forth.

7. In combination With a driving-disk and a driven disk, means for regulating the speed of the driven disk, and means for throwing said disks in and out of engagement and means for releasing and setting a brake on the driven mechanism, comprising a togglejoint for throwing said driven disk in and out of en-' gagcment With said driving-disk, a shaft pivotally connecting the members of said togglejoint, a lever secured to said shaft, and a roller on said lever for actuating" said toggle-joint, a crank on said shaft, a chain or cable connecting said crank With a brake mechanism, said crank being positioned and said chain or cable adjusted to permit of the initial movement of said lever to throw said disks out of engagement, and the final movement of said lever acting to set the brake, substantially as and for the purposes set forth.

In witness Whereof We have hereunto set our hands in the presence of tWo witnesses.

CALVIN P. H. VARY. HERMON D. HUTCHESON.

lVitnesses: V

WINFoRD (J. BURGESS, IRA N. CRoUcHER.

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