US748958A - Combined governor and speed-gear mechanism - Google Patents

Description

' I N. JOHNSON.

COMBINED GOVERNOR AND SPEED GEAR MECHANISM.

APPLICATION FILED MAI 23, 1903.

N0 MODEL ZSHEETS-fSHEBT 1,.

'PAT'ENTED JAN. 5, 1904.

PATENTED JAN. 5, 1904.

i N. v. JOHNSON. VGOM'BINEYD GOVERNOR AND SPEED GEAR MECHANISM.

APPLIOATIOH FILED HAY 23, 1903..

' 2 sums-sums.

I 42: Va H 40 4 v g y 8 v UNITED STATES Patented January 5, 1904.

PATENT OFFICE.

NELS V. JOHNSON, OF COLBY, KANSAS.

SPECIFICATION forming part of Letters Patent No. 748,958, dated January 5, 1904.

l V Application filed May 3, 1903. Serial Nil-158.4664 (No model.)

. citizen of the United States,residing at Colby,

in the county of Thomas and State of Kansas, have invented certain new and useful Improvements in a Combined Governor and Speed-Gear Mechanism, of which the followingis a specification. I

My invention relates to combined governor and speed-gear mechanism for self-feeders and other machines; and my object is'to produce a machine of this character which opcrates efficiently and reliably and is of simple, strong, durable, and comparatively inexpensive construction.

To this end the invention consists-"in cer- 'tain novel and peculiar features of construction and combinations of parts as hereinafter described and claimed, and in order that it may be fully understood reference is to be had to the accompanying drawings, in which-- Figure 1 represents a side elevation of a portion of a self-feeder equipped with a combined governor and variablespeed gear mechanism embodying my invention. Fig. 2 is a vertical section taken on the line II II of Fig. 3. Fig. 3 is a section taken on the line 111 III of Fig. 1. Fig. 4 is a section taken on the line IV IV of Fig. 3.

In the said drawings,1 designates the feederframe, which may be of the usual or any preferred type.

2 is a shaft at the upper side of the framework and driven from the cylinder of the threshing machine (not shown) or otherwise in any suitable or preferred manner.

3 is a bevel-gear on said shaft and meshing with a similar gear 4 on the upper end of a substantially upright shaft 5, journaled near its upper end in a bearing 6 of the framework and at its lower end in a tubular arm 7 of the sleeve 8 fitting loosely upon the horizontal shaft 9 of the feeder carrier or conveyer, (not shown), said shaft being suitably journaled in the framework in any suitable manner, and at the projecting end shown also journaled in the bearing-bracket or'brace 10, bolted to the framework at one end.

11 is a guide-rod parallel with the shaft 9 and projecting inwardly from bracket toward the framework and through a guidebracket 12, secured to sleeve 8 to guide the latter in its longitudinal movement for a purpose which hereinafter appears. To impart such longitudinal movement to the sleeve, a lever 13 is pivoted between ears 14 of bracket 10 and connected by link 15 with the sleeve, as shown most clearly in Fig. 3. By swinging said lever outwardly from the framework corresponding movement is imparted to sleeve 8, and the latter is secured at the desired point of adjustment by means of setscrew'16, mounted in bracket 12 and adapted to impinge tightly on the guide-rod 11. This longitudinal adjustment of the sleeve results in a slight oscillation of the shaft 5 toward or from the framework, the upper end of said shaft being loosely journaled in bearing 6 to accommodate such movement.

17 is a sleeve spliced upon shaft 5 to slide longitudinally thereof and rotate therewith,

'and secured rigidly upon or formed integral with said sleeve are a series of gear-wheels 19 2O 21 of increasing diameters.

Just above the gear-wheels is a governor, comprising a collar 22,rigid on shaft 5; a collar 23, spliced to rotate with and move longitudinally upon the shaft; links 24, converging from said collars; weights or balls 25, uniting said links, and a coil-spring 26 upon the shaft and hearing at its opposite ends against collar 22 and slide-collar 23. This governor acts in the usual way--that is, the balls lie close .to the shaft when the speed is low and move farther apart as the speed increases,the spring afiording a yielding resistance to such in.-

creasing speed in the customary manner.

Fitting rotatably or loosely in groove 27 of sleeve 23 is a collar 28, and secured rigidly to said collar is an angle-rod 29, having its arm of greatest length parallel with shaft 5 and extending through a guide-bracket 30, projecting from the framework. The lower'end of the angle-rod has a pin-and-slot connection,.as at 31, with the angle-lever 32, fulcrumed on a bracket 33, secured to the frameworlgsaid angle-lever being provided at its lower end with a laterally-projecting arm 34, for a purpose which hereinafter appears.

is a collar rigidly secured upon the lower end of sleeve 17, and 36 a second collar journaled upon said sleeve and fitting snugly be tween collar 35 and gear-wheel19, said collar 36 being connected to the upper end of a rackbar 37, having a sliding dovetail engagement, as'at 38, with sleeve 8 and its arm 7, as shown most clearly in Figs. 3 and 4.

39 is acog-wheel engaging the rack-bar and disposed between ears 40 of the sleeve upon a shaft 41, journaled in said ears and in an ear 42 of bracket and provided with a crank-handle 43 at its upper end. To look the shaft against accidental rotation, it is provided with a toothed wheel 44, engaged by gravity-dog 45, pivoted upon a lug 46 of the uppermost ear 4(J,said dog being thrown back out of engagement with wheel 44 when it is desired to longitudinally adjust the rack-bar and sleeve 17 for the purpose of disposing the desired gear- wheel 19, 20, or 21 in engagement with the large'orown-gear 47, journaled on the shaft 9 between the sleeve 8 and the framework. This gear is provided concentrically of its axis with an annular wall 48, having a series of notches 49 in its inner edge to receive the pins 50, projecting rigidly from wheel 47, and rollers 51, journaled on said pins so as to project for about half their diameter beyond the inner edge of said wall, and therefore in the path normally of the dog 52, disposed within the wall and carried by lever 53, provided with an outturned arm' 54 for engagement at times by the corresponding portion 34 of angle-lever 32, as shown in Fig. 2. Said lever 53 is pivotally connected, as at 55, to a swinging arm 56, fitting loosely on shaft 9 and having at the opposite side of said shaft a lug 57, connected by a retractile spring 58 to lever 53, the arrangement being such that the retraction of spring 58 tends tothrow'the dog 52 outward against the wall, and thereforein position to be engaged by one of the rollers 51. The result is the crowngear, driven by one of the inter-meshing gears 19,20,0r2l, imparts corresponding speed to the shaft 9, and therefore to the carrier or feeder.

(Not shown.) It will thus be seen that wall 48, antifriction-rollers 51, arm 56, dog 52, and lever 53 constitute a clutch mechanism for compelling shaft 9 to rotate with gear-Wheel 47, and that the lever 32 acts as a spring-actuated tripping-lever for the purpose of releasing said shaft from gear-wheel 47'when the driven shaft falls below a predetermined speed.

In practice the crown-gear rotates continuously at a greater or less speed, accordingly as it is driven by a large orsmall gear-wheel,

v and to effect the disengagement of a wheel from said crown-gear and the engagement of a smaller gear-wheel with said crown-gear the operator first loosens set-screw 16 and swings lever 13 outwardly slightly, so as to totally disengage the Wheels. Hethen throws dog45 back to inoperative'position and turns crank 43 to slide sleeve 17 upwardly until the small gearsay l9is opposite the teeth of wheel 47. He then throws said dog backinto engagement with wheel 44 to lock the rackbar and wheel 19 against longitudinal movement. He next manipulates lever 13 to slide sleeve 8 inward upon shaft 9 until the desired gear-wheel 19 engages the crown-gear, when he resecures the sleeve 8 in position by means of the set-screw 16.

Should the speed of shaft 5 fall so low that the conveyer could not supply the proper amount of grain to the cylinder, the governor would contract and in so doing slide rod 29 upwardly and throw the angle-lever 32 from the position shown in full lines, Fig. 1, to the position shown in full lines, Fig. 2. As a result the crown-gear rotating in the direction indicated by the arrow, Fig. 3, would cause arm 54 of lever 53 to strike the arm 34 of lever 32. The latter in resisting this thrust swings laterally, as indicated by dotted lines, Fig. 2, to accommodate the pivotal movement of lever 53, this pivotal movement resulting in the stretching of spring 38 and the disposal of the dog 52 inward of the circle described by rollers5l, and in consequence the rollers pass the dog without further movement of the conveyer-shaft, the latter remaining stationary until the speed of operation attains a predetermined point. This predetermined speed resultsin the expansion of the governor, such expansion immediately throwing the lever 32 to its "original position, and the instant it moves out of the path of lever 53 spring 58 retracts and operates said lever to dispose dog 52 again in the path of the rollers 51 of the revolving crown-gear, so as to cause the conveyer to resume its operation.

By means of the use of the variable-speed mechanism it will be apparent that given speed imparted to shaft 5 may be utilized in driving the conveyer at different speeds, and it will be furthermore apparent that the use of a governor in conjunction with this variable-speed mechanism permits the operation of a self-feeder to be regulated to a nicety, the governor serving to automatically arrest the conveyer movement in case its operation is too slow and the differential mechanism enabling the operator to lower the speed of the conveyer in case the speed of shaft 5 becomes so high as to threaten an overcharge to the cylinder.

While I have illustrated and described the preferred embodiment of the invention, it will be apparent that it is susceptible of modification as regards its form, proportion, detail construction, and arrangement without departing from its essential spirit and scope or sacrificing any of its advantages.

Having thus described the invention, what I claim as new, and desire to secure by Letters Patent, is

1. A combined governor and speed-gear, comprising a shaft, a sleeve and a crown-gear journaled thereon, a clutch mechanism normally locking said gear and shaft together, a driven shaft journaled at one end in said sleeve and arranged substantially parallel with the face of said gear, a gear-wheel on said shaft and engaging the first-named gear, and means for throwing said clutch mechanism out of engagement.

2. A combined governor and speed gear, comprisiu g a shaft, a sleeve and a crown-gear journaled thereon, a clutch mechanism normally locking said gear and shaft together, a driven shaft journalcd at one end in said sleeve and arranged substantially parallel with the face of said gear, a gear-wheel on said shaft and engaging the first-named gear,

means for throwing said clutch mechanism out of engagement, and a governor to reverse the operation of such means to effect the reengagement of the clutch mechanism.

3. A combined governor and speed-gear, comprisingashaft, asleeve mounted slidingly thereon, a crown-gearjou rnaled on said shaft, a clutch mechanism normally locking said gear and shaft together, a driven shaft journaled at one end in said sleeve, a plurality of variable-sized gears mounted to rotate with and slide upon said last-named shaft, and means for throwing said clutch mechanism out of engagement.

4. A combined governor and speed gear, comprisingashaft, asleeve mounted slidingly thereon, means to secure the sleeve at the desired point of adjustment, a crown-gear journaled on said shaft, a clutch mechanism normally locking said gear and shaft together, a

driven shaft journaled at oneend in said sleeve, a plurality of variable sized gears mounted to rotate with and slide upon said last-named shaft, and means for throwing said clutch mechanism out of engagement.

5. A combined governor and speed-gear, comprising a shaft, asleeve mounted slidingly thereon, means to secure the sleeve at the desired point of adjustment, a crown-gear journaled on said shaft, aclutch mechanism normally locking said gear and shaft together, a driven shaft journaled at one end in said sleeve, a plurality of variable-sized gears mounted to rotate with and slide upon said last-named shaft, a rack-bar connected to move said gears longitudinally and fitting slidingly in said sleeve, a shaft geared to said rack-bar, and means for throwing said clutch mechanism out of engagement.

6. In a machine'of the character described, a shaft, a gear journaled thereon, a sleeve slidingly mounted on said shaft,a driven shaft journaled at one end in said sleeve, and a plupoint of adjustment, a driven shaft journaled at one end in said sleeve, a plurality of variable-sized gears mounted to slide upon and rotate with the driven shaft, and means for securing one or the other of said gears in engagement with the first-named gear-Wheel.

8. In a machine of the character described, a shaft, an arm rotatable therewith, a lever pivoted to said arm and provided with a dog, a spring holding said lever with the dog pressed yieldingly away from the shaft, a gear-wheel jou rnaled on the shaft, and provided with an annular wall concentric of the shaft and surrounding said dog, and antifriction-rollers carried by said gear and projecting inward of said wall in the path of said dog.

9. In a machine of the character described, a shaft, an arm rotatable therewith, a lever pivoted to said arm and provided with a dog,

a spring holding said lever with the dog pressed yieldingly away from the shaft, a gear-wheel jourualed on the shaft, and provided with an annular wall concentric of the shaft and surrounding said dog, antifrictionrollers carried by said gear and projecting inward of said Wall in the path of said dog, and means for tripping said dog out of the path of said rollers.

10. Inamachine of the character described, a shaft, an arm rotatable therewith, a lever pivoted to said arm and provided with a dog, a spring holding said lever with the dog pressed yieldingly away from the shaft, a

gear-wheel journaled on the shaft, and provided with an annular wall concentric of the shaft and surrounding said dog, antifrictionrollers carried by said gear and projecting inward of said wall in the path of said dog,

means for tripping said dog out of the path of said rollers, and governor-actuated means for permitting the dog to be restored to its original position in the path of said rollers.

In testimony whereof I aflix my signature in the presence of two witnesses.

NELS V. JOHNSON. Witnesses:

IKE W. CRUMLY, W. S. FERGUSON.

ICC

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