US1439045A - Tractor - Google Patents

Description

Dec. 19, 1922. 1,439,045;

' F; 0- WILSON.

- TRACTOR- 7 man NOV. 24,19 9. 3 SHEETS--SHEET I.

Dec. 19,1922. I 1,439,045.

- F. D. WILSON.

TRACTOR HLED N0v.24,19:a. 3SHEETS-SHEET a I I VENTUR. #49,, MM,

= BY %mmmm A TITORNEYS.

Dec. 19,1922. 1,439,045. F. D WILSON.

TRACTOR. FILED NOV- 24, L919. 3 $HEETSSHEET 3 WI Z/VTOE device also-contains inipr FREDERICK D. "WILSON, OF MOLINE, ILLINU'JIS, A$$1GNOR, BY MESNE ASSIGNM'ENTS, T0

AUSTIN IVMLNUFAC'I'URING fiOIJIIPiZQhTEZ, OF C ILLINOIS.

GAGE, ELLENUIS, A O0R$ORATION 016 'ipplication fled Kiev-amber 3 1, 1918'. Serial No. 340,206

To u/Z "lo/1021i it may concern.

lie it lHIOWIl that l, FRED'ERHJK ll. li iLsoir, 21 citizen oi the United States. residing at Moline. in the county oi Rock Island and State of Illinois, have invented certain new and useful l'm' irovements in Tractors. of which the following is n specili *ation.

lily invention husreference to tractors, such 21s are employed for general field Worlt and other viorlt upon it term. and it relates more specially to means for coiitrollingr the action or the tractor, either While the operw tor is stationed on the nnrchine itself on n machine heing trailed in rear thereof. or from o. point on the mound. it also pcrtnins to tour-wheel tractors. of that class \vlmrein the czirlfyirig-Wheels ere always held in line with the line of increment of the inn-- chine the operation of tnr r the tractor beingnccoinplished by driving the carryingo'hecls on one side or the inzit-lune while the movement. of those on ti o oppo side oi the nnmhine is temporarily interrupted. ihc

oi'enicnts on ii sinninr machine for which l nited States were :0 I under date of l ehrnar tierinl 274,91L wherein the carrying Wheels onop posits sides of the tractor were opcriitirely united. by means of sprocket gearing.

in devices of the class mentioned, in the operation of which it is necessary to describe curves and angular turns. it is essential that the machine should respond promptly to the demands insde upon it, and that. tilt} con- .i' h v myself fi O.

.trolling mechanism should he arranged so as to act quicltly' and positively. and at the same time not interfere with the ordinary action oi the machine. One of the objects of my invention is to increase the etliciency thereof along: these lines.

in carrying out the PUTPOSGS oil the invention l. inzilte use of novel transmission devices whereby the power of a main driveshaftmay he connmunczited to carrying!" Wheels on opposite sides or the ll'lziclililt. to give the required movement thereto. These devices comprise two separate and independent mechanisms. not connected by means oi diiierentinl gearing or other devices through which one of ti e tronsniission gearing might be affected by the action of the other set 'lrnctors of the four-Wheel drive are quite grenorally provided svith -zliiIlill gearing.

one of the results of Which is that when the carrying Wheel at one end of the driving. axle is stopped, and the opposite wheel continues to ope ate. it does so at an increased rate of speed, requiring additional power to drive the seine. in in machine, on the contrary. the stopping of one of the carrying wheels not only does not tend to increase the speed of the active one, butpermits additional power to he applied thereto, the cessn tion or movement otlthe one Wheel operating at once to relieve the motor from that part oi its lend.

i also provide novel devices for the con Jtrol or the transmission mechanism, Whereso that the machine can be driven from a point distanttherefronn. much after the K113111181 of controlling 21 horse.

The transn'iission devices are of such a character that when one set thereof 15 thrown out of operation, the carrying: Wheel connected therewith is instantly locked from further movement, resulting in the turning movement of the machine being quickly ecconiplished. I

The shove, and other features and advsntages of my invention will more fully appear from the following specification, reference. being had to the drawings accompanying the some, in which:

Fig. l. is plan View, illustrating so much of the device as is involved in the present improvement.

Fig. 9. is an enlarged plan View of the transmission devices, with part-s of the enclosing casing in section.

Fig.5. 3 :1 side elevation of the invention. will 4- shows the clutch devices, detached if gig. is :1 detail oil? the stceringnvheel stem end corn.

liorrespondingr parts are indicated by sim ilsr reference characters throughout the sevtrally mounted in the casings f5 and l and rigidly connected therewith an axle 7. upon the ends of which are rotatably mounted the rear carrying wheels. (Xot shown herein.) The central casing and tubular extensions thereol are preferably formed in two similar sections. for the convenience of manufacture. and so that such parts will be interchangeable.

Rotatable on the axle 7. within the casings 3 and 4, respectively. are gear-wheels and 9. (Fig. 2) provided on their outer faces with extensions it). which have a rigid connection with sprocket-wheels 1.1. only one or which is shown. secured to the hubs 12 of the carrying-wheels. By this means the rotary movement of the wheels 8 and 9 is imparted to the rear carrying wheels. causing the same to revolve. Movement. can also be communicatedto the tor-ward carry ing wheels of the machine by means o't sprocket chains connecting the wheels 11.

' tubular casings 5 and (5.

with similar wheels on the hubs ot' the front carrying wheels. All oi the carrying wheels are thus utilized for the purpose of driving the machine.

Journaled in the lower part of the casing 1, at right angles with the shaft 7. is a shaft 13, operatively connected with a drive-shatt 14. which receives movement from the motor of the tractor. in opposite ends of the casing 1 worm drive wheels 15 and lb are mounted on the shaft 123.. so as to rotate freely tiereon. said worm-drives being in mesh with worm gears 11' and lS' on the ends of shafts 19 and 20 jonrnaled in the (in the outer ends of said shafts are gear pinions 21 and in mesh with the wheels 8 and 9. (onnected with the worms 15 and 16. so as to have rotation. therewith. are. clutch members 223 and 24, provided with friction disks which are adapted to be engaged by similar disks contained in clutch members 25 and 26. slidable on a squared port-ion 2? of the shaft l3. On their inner faces the last-named clutch mem 'bers have bearine collars Q8 and 329. a ainst which force is applied to cause an engagement of the. clutches by means ot cams Ill) and 31 on the lower ends of rods 32 and 33. provided on their upper ends with curved extensions 34k and 35. The engagement of either of the clutch devices operates to rotate the worm associated therewith. which movement is imparted through the wori'n -gears and other gearing to the carrying wheels on one or other side of the machine. lhe en gagement of both of the clutches at the same time serves to operate all of the carrying- Wheels simultaneously.

Suitably mounted on the frame or the tractor, convenient to the mechanism hereinbefore described, is a standard as. in the upper end of which is pivoted a pin 37. projected downwardly into a cam 38. provided in its lower edge with a notchiit engaged by a. dog i pivoted in the support ac. The dog it) has a weighted arm ll. which tends to hold said dog in place in the notch -39. and return it thereto. upon having been displaced. By the engagement of said dog and slot the stem 37 is held normally in a vertical position.

llaving a pivotal mounting on the stem 3? is a wheel 42. provided with a handle -l- 3. which is preferably hinged to the wheel. so as to fold downwardly out of the way. as indicated in broken lines in Fig. l. ()n the lower face of the wheel 42 are loops it and 4.5. with which are connected the ends of rods .lli and 47. the other ends of said rods having a yieldable attachment with the ends of the arms Eli and 35 by means of frame, it and -29. connected with the. ends of said arms. and containing coiled springs in) and 51. held on the rods in and J by means of heads or nuts on the ends thereof. (hen the stem 37 is vertical. and the wheel 4-2 in a neutral position. as shown in Fig. l, the arms '34 and I35 will be held so as to cause. both oi? the cams 3t) and 31 to operate. resulting in the movement of the carrying wheels on both sides of the machine. if it is desired to turn the machine to the right. the wheel L2 is given a slight turn in that direction, this action contracting the. spring 50 and holding the cam, 30 in engagement with the collar 28. fit the same time the spring 51 is relaxed. and the head of the rod 47 omes in contact with the frame it moving the arm $55 so as to disengage the cam 31. The wheels on the right hand side of the machine thereby cease to operate. while the continuation of the movement on the opposite side of the machine serves to direct the movement of the machine towards the night. in this way the tractor is capable of making a rectangular turn. which is frequently required oiit in its work in the lield. The turning of the wheel 42 to the left will cause a similar operation of the machine in that direction.

lin the foregoing description of the operation .ot the machine it is assumed that'the driver is in proximitv to the wheel e2. so as to operate the same with his hands. but in order that it may be actuated from a machine in rear of the tractor. or at some other point distant therefrom. said wheel is made in the term of a sheave. so as to receive a cord 52 which passes around the wheel and projects rearwardly into apair of lines. for manipulation by the hands of the operator. The lower part of the wheel is provided witha tlange 22 to better support the lines in all the positions which the wheel assumes. In operation. the wheel LZ is turned in either direction as desired. the same as by the hands in the first instance. It frequently happens that the operator will be at one side ma ma of the tractor, so that the lines. instead it extending directly to the r ar, will be at one side or other of the wheel. in order that engagement of the lines with the wheel may be assured under all conditions. there is pivoted on the stem 37, above the journal of the wheel 42 a sleeve 53, carrying a guideframe Set, the ends of which curve downwardly and enclose the cord to prevent its escape from the wheel. If the driver changes his position with relation to the line of movement of the tractor, the frame accommodates it to the differing positions of the lines. It is thus possible for the operav tor to describe a partial circle of approximately one hundred and eighty degrees. from one side of the machine to the other. This is a special advantage when the operator is on a machine in rear of the tractor. which machine assumes different angles with relation to the tractor, such as are caused by describing curves and angles.

If it is desired to stop the tractor when in motion the dog eh) is'released from engagement with the cam as. permitting the wheel as to tilt in the direction of the rods 32 and 33. This releases the tension on the arms 8% and 85, disengaging the cams 30 and 31, and interrupting the movement of the trans mission devices. "When it is desired to start the machine again the wheel 42 is pulled back into a horizontal position. the dog 40 automatically engaging the notch in the cam 38. and holding the wheel in such position. If the machine is being actuated by the lines, to release the cam, a quick jerk is given to the lines, causing the dog 40 to be. expelled from the notch 39. The lines are then relaxed, permitting the wheel to rock forwardly. When it is desired to start the machine again .the wheel is pulled back into position by means of the lines. In using the lines to stop the machine. the jerk given thereto, to release the dog. is imparted to the springs 50 and 5t. causing a slight contraction thereof, and upon the wheel tipping in a forward direction there is a reaction which is likely to be directed against the ends of the frames 48 and L5), and received upon the ends of the arms 34- and 35. In order that this action may not be too abrupt. I prefer to leave a little space between the ends of the rods 46 and 47 at the ends of the f arms, when such partsare in an operative position, The reactionary force of the spring is thereby expended before the head of the rod comes in contact with the end of the frame.

If the worm drives 15 and 16 are provided with the usual pitch. it will be impossible for such worms to he turned rearwardly through a. reverse movement of the worm-gears l7 and 18. lit follows, therefore. that whenever either of said worms is thrown out of engagement with the clutch,

the parts associated therewith. including the carrying wheels. will be locked from mover 1 incnt. This adds to the successful operation of the device in turning from a straight line.

the turning being accomplished by the wheels which are in movement.

There has been shown and described here in the preferred embodiment of my invention. it being recognized that possible changes in the form and arrangement of the parts thereof may be made within the scope and spirit thereof.

il'hat I claim and desire to secure. is:

1. In a device of the class described. a suitably mounted casing, a shaft mounted therein, adapted for connection with the main drive-shaft: worm drives mounted on said shaft, so as to rotate freely thereon; an axle mounted in said casing: carrying Wheels on said axle, capable of independent rotation thereon; gear-wheels supported on said axle and operatively connected with said carrying-wheels; gearing connecting said worm drives with said gear-wheels; clutch devices mounted on said shaft and operatively connected with said worm drives: and means for actuating said clutch devices. to impart rotation to said worm drive devices, so as to cause a joint or separate operation thereof, as desired.

2. In a device of the class described, a. pair of independently rotatable carryingwheels; gear-wheels operatively connected with said carrying-wheels; a drive-shaft rotatably mounted centrally of said carrying wheels: cross-shafts rotatably mounted in proximity to said drive-shaft; gear pinions on the outer ends of said cross-shafts in mesh with said gear-wheels; worm-gear devices operatively connecting said driveshaft and cross-shafts, and normally out of engagement with said drive-shaft; and means for causing the engagement of said drive-shaft and worm-gearing. to actuate. said cross-shafts simultaneously or independently, as desired.

3. in a device of the class described. a pair of independently rotatable carrying-wheels: gear-wheels operatively connected with said carrying wheels; a drive shaft rotatably mounted centrally of said *arrying wheels: cross-shafts rotatably mounted in proximity to said drive-shaft and projected outwardly therefrom in opposite directions: ear-pinious on the outer ends of said drive-shafts. in mesh with said gear-wheels: and worm gearing operatively connecting said (hive-shaft and cross-shafts. normally out of engagement with said drive-shaft. and adapted to be thrown into engagement therewith to actuate said cross-shafts independently or simultaneously: said worm gearing operating to lock said cross-shafts from reverse movement when out of engagement with said driveshaft.

4. In con'ibination with a drive shaft and gearing carried thereby, normally out of engagement therewith; clutch mechanism associated with said gearing and adapted to throw the same into engagement with said shaft; a tiltingly mounted steering wheel; yieldab'le means of connection between said wheel and said clutch mechanism; and means for holding said wheel normally in position to cause the operation of saidclutch mechanism.

5. In combination with a drive-shaft and two sets ofgearing associated therewith, and normally out of engagement therewith; clutch devices operatively connected with said gearing, a tiltingly mounted steering wheel; connecting members attached to said wheel and having a yieldable connection with said clutch devices; and means for holding said wheel normally in an operative position. f

6. In combination with a drive-shaft and two sets of gearing operatively associated therewith; clutch devices operativelyconnected with said gearing; rods adapted to operate said clutch devices independently of each other; a. steering wheel rotatably mounted in proximity to said rods; and connecting means between said steering wheel and said rods provided with tension devices.

7. In combination with a frame and drive-shaft mounted therein, two sets of gearing operatively connected with said drive-shaft and normally out of engagementtherewith; clutch devices operatively connected with said gearing, and adapted for the operation of either set independently of the other; rods adapted for the operation of said clutch devices; a steering wheel movably mounted on said frame; connecting means between said wheel and said rods, provided with tension devices, and means for holding said wheel normally in an operative position.

8. In combination with a frame and drive-shaft mounted therein, two sets of gearing operatively connected with said shaft and normally out .ofengagement therewith; clutch devices operatively connected with said gearing; rods adapted for the independent operation of said clutch devices; a steering-wheel tiltingly mounted on said frame, and provided with rein-supporting means; connecting means between said steering-wheel and said rods provided with tension devices; means for holding said wheel normally in an operative position; and reins connected with said steering wheel.

9. In a device of the class described, steering devices comprlsmg a tiltingly mounted stem provided with a cam member; a hand-wheel rotatable on said stem; and means for engagement with said cam member to lock said stem with the wheel in operative position, said means being adapted for automatic engagement.

10. In a device of the class described, steering devices comprising a tiltingly mounted stem provided with a cam mem her; a hand-wheel rotatably mounted on said stem. and provided with a peripheral groove; reins operable in said groove; a guide frame mounted above said wheel, to hold said reins in an operating position; and means for engagement with said cam meniberto hold said stem and wheel in an operative position.

11. In combination with a frame and drive shaft mounted'therein; transmission devices operatively connected with said drive-shaft, and normally out of engagement therewith; clutch devices operatively associated with said transmission devices for the independent operation thereof; clutch operating members; a steering wheel tiltingly mounted on said frame; connections between said steering wheel and clutch operating members, adapted to be released uponsaid wheel being tilted out of a normal position; and means for holding said wheel normally in an operative position.

12.111 combination with a frame and drive-shaft mounted therein; two sets of transmission devices operatively connected with said shaft and normally out of engagement therewith; clutch devices operatively associated with said transmission devices for the independent operation thereof; clutch operating members; a steering-wheel mounted tiltingly in said frame and provided with operating reins; connecting members between said steering wheel and clutclnoperating rods, provided with spring devices adapted to exert a tension upon said rods when said wheel is in an operative position; and means for holding said wheel normally in an operative position; said means being releasable upon said reins being given a jerking movement.

13. In combination with a frame and carrying -wheels therefor, a drive-shaft mounted in said frame; transmission devices. connecting said shaft with said carrying wheels, for the independent operation thereof, and normally out of engagement with said shaft; clutch devices operatively associated with said transmission devices; clutch-operating members; a steering-wheel supporting member tilting'ly mounted on said frame; a cam associated therewith and provided with dog-engaging means; a dog pivoted adjacent to said cam and adapted for engagement therewith; a steering wheel mounted on said support and provided with operating reins; and connecting means be tween said wheel and clutch operating members provided with tension devices; whereby one or both of said clutch devices may be actuated when said wheel is in an operative Manama position; said dog. being adapted to be re leased upon a jerking movement being im-- parted to said reins.

' 14. In a device of the class described, a motor and two independent power. transmitting mechanisms, a rotatable member mounted upon a vertically oscillatable memher for controlling the distribution of power I FREDERICK n. WILSON.

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