US1202095A - Tractor. - Google Patents

Description

A. ORTENGREN.

TRACTOR. APPLICATION FILED JUNE 22; 1912.

Patented Oct. '24, 1916.

6v SHEETS-SHEET l- INVENTOR W A.ORTENGREN.'

.TRACTOR. APPLICATION FILEID Jun: 22. 1912'.

1,202,995; v Patented Oct. .24, 1916.

6 SHEETSSHEET 2.

INVENTOR ATTORNEY 'A. ORTENGREN.

TRACTOR.

APPLICATJON FILED JUNE 22; 1912- Patented Oct. 24;, 1916.

' 6 SHEETS-SHEET 3 INVENTOR A ORTENGREN.

TRACTOR. APPLlCATlON FILED JUNE 22.1912.

Patented Oct. 24, 1916 6 SHEETSSHEET 5.

A.-ORTEN'GREN.

TRACTOR.

APPLICATION FILED JUN 22. 1912.

Patented Oct. 24,1915.

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iNVENTOR ATTORNEY AIFREZD OR'IENGREN, 0F BROOKLYN, NEW YORK, ASSIGNOB TO ELIZABETH CHRISTIE, I

OF WEEHAWKEN, NEW JERSEY.

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Specification of Letters Patent.

Patented Get. 24,1916.

To all whom it may concern:

lowing is a specification, reference being had to the accompanying drawings, forming a part thereof. 7

This invention. relates to an improvement in tractors, and is intended primarily for use in connection with fire fighting apparatus.

One object of the invention is to provide a tractor which is adapted to be attached to the body or frame of a piece of fire apparatus, as for examplea fire engine, to replace the horses and front axle and wheels with a power operated element.

A further object of the invention is to provide a combined hand and power operated steering mechanism. 7

Other features of the invention will be set forth in the following detailed description of an illustrative embodiment of the invention.

In the accompanying drawings, Fi ure 1 is aside elevation ofthe tractor attac ed to the front end of the frame or yoke of a steam fireengine. Fig. 2 is a plan view of the same. Fig. 3 is a fragmentary lonclamping the friction clutch. Fig. 8 is a sectional elevation of the controlling lever and related parts of the power steering mechanism. As illustrated in the drawings the body of the tractor'comprises a rectangular frame,

composed of side bars 10, 11 and a front end bar 12 made of steel channel bars, and

a rear cross-bar 14. A cross-bar 16 extends between the side bars 10 and 11 intermediate the front and rear bars 12 and 14. A rectangular frame 18 (see Fig. 3) is mounted between the bars 14, 16 and 10, 11 and is provided with an inwardly projecting horizontal flange 19 and an annular flange 20 projecting upwardly therefrom.

A turret or fifth wheel 22 is rotatably mounted on the 'frame. 18 and is provided with a horizontal annular flange 23 which bears upon the upper surface of the flange 19 and fits within the annular flange 20. A ring 24 is bolted to the flange 20 and overlies the flange 23 to hold said turret in lace. The rails 25, 26 of the frame or yoke of the fire-engine body are riveted or otherwise affixed to the top of the turret 22,

i and a sector shaped worm gear 28 is also mounted on the top of the turret at the front portion thereof.

The worm sector 28 meshes with'a worm shaft.3Q journaled in bearings 31 and 32, and provided with a bevel gear 33 which meshes with. a bevel gear 3-1 on a shaft 35, said shaft 35 being also provided with a bevel gear 36- (see Fig.3). The bevel gear 36 is adapted to meshwith either of two. bevel gears 37, 38 on a-clutch sleeve 39, (.Fig. 5), said sleeve being loosely splined on a shaft 40 journaled in ball bearings 41, 42 mounted in side frames 44, 45, respectively. A forked arm 46 (Fig. 4E) depends from a rod 47 slidably mounted in a sleeve &8, said arm straddling the clutch sleeve 39 between the gear 38 and a collar 49 on said sleeve. A link 50 (Fig. 2) is pivotally connectedatone end to the rod 47 and at its other end to one arm of a bell crank lever 52. The other arm of the bell crank 52 is" connected by means of a link 53 to a crank arm 54 (Fig. 8) depending from a crank shaft 55. The shaft 55 is journaled to rotatein bearingson a U-shaped frame 56 and is pinned to an arm 58 extending upwardly therefrom. This arm 'is provided with a hole 60 adapted to receive a locking pin 62 slidablymounted in a sector shaped web 63 of the frame 56. The pin 62is normally pressed inward by a leaf spring 6% carried by the web 63. A pair of lugs 66 project laterally from the upper end of the 7 carried by cars on a sleeve 69 which is re tatable about the crank shaft 55. By swinging the upper end ofthe lever 68 toward the right when the pin 67 is opposite the looking, pin 62, the latter is pushed out of en-- gagement' with-the arm 58, and the pin67 enters the hole 60. The lever 68 may then be moved forward or backward to bring the bevel gear 37 or 38 (Figs. 3 and5) into mesh nished by an engine 7 0 mounted at the frontportion of the frame, and comprising in the present instance a four cylinder engine havinga crank-shaft 72 journaled 1n bear ngs 73, 73, and 74.v A clutch disk 7 5 is fast on one end of the crank shaft 72 and carries a clutch disk 76 which is slid-ably mounted 011 pins 77. A disk 78 is mountedbetween the disks 75 and 76, and is provided with friction inserts '79 which are adaptedto be clamped between the disks 75 and- 76 when the disk 76 is moved toward the disk 7 5.v The disk 78 is sl dably keyed upon'a sleeve80 which is rotatable about the shaft 72. A toothed cam ring 821s rotatably mounted about an annular web 83 on the outside of a 'gear casing 84. This ring is provided with anti-friction bearings 86, and.its'teeth cooperate with complementary teeth on a. cam ring. 88 aflixed to thegear casing 84. The cam ring82is arranged to be rotated slightly relative to the cam ring 88, thereby causing the inclined faces of theirteeth to coact to force the disk76 toward the disk 75 and clamp the friction inserts 79 there between.

This relative rotation of the cam rings 82 and 88 is effected by a foot lever 90 faston a hollow shaft or sleeve91 rotatable on ashaft 92. A crank arm 94 is fast on'the outer end of the sleeve 91, and is pivotally connected to one end of a link 95, the other end of whichis connected to an arm 96 pro- I jecting upwardly from the camring 82; By

pushing the upper end of the lever 90 forward, the arm 9.6is tilted toward the right,

as viewed in Fig. 4, thereby causing the 88 and forcing the rings on the elongated hub 107 of a gear 109, said hub inclosing a sleeve on the shaft 101', said sprocket engaging a sprocket chain 105 passing over a sprocket 106 'connected'to a shaft 108, the two sections of which are connected by any well known form of differential gearing 110. The shaft sections 108 are connected by universal joints with pinions 108 I I (Fig. 1) which mesh with internal gears 111 in the wheels 174 and 175 to provide a front drive. A shaft 112 is provided with an enlarged portion 113 which surrounds a hub of the sprocket 104 and is bolted to said sprocket, said'shaft. being journaled in a bearing 114 and provided at its outer end with a brake wheel 116. I

A brake'band 118 surrounds the wheel 116 and is attached at one end to a stationary pin 119 mounted on the side frame 11. The other end of the band 118 is connected to one end of alever 120, the other end of which lever is pivotally connected to oneend of a link 121. The other end of the link 121 is pivotaily connected to .a crank arm 122 fast on the shaft 92, and a foot lever 124 is fast on said shaft. By pressing the upper end of the foot lever 124 forward the brake band 118 is tightened about the wheel.

one end to the rod 132 and at its other end 1 nected to oneend of a link 138, the other end of which is connected to the lower end of a lever 140 (Fig. 8) rotatably mounted on the crank shaft 55. The upper end of the lever 140 is provided with a hole 141 adapted to receive alOcking pin 142, slidably mounted in a sector-shaped web 148 of the frame 56. The pin 142 is normally pressed,.inward by a spring 144 carried by the web 143. A pair of lugs 146 project lat erally from the upper end of the lever 140 and are adapted to be engaged by the pin 67 which projects from both sides of the hand lever 68. The hand lever 68 is held inmid position by the lugs 146 and 66, the pin 67 projecting at each side of said lever an amount equal to the thickness of the arm 58 and the lever 140. By swinging the upper end of the hand lever toward the left when the pin 67 is opposite the locking pin 142, the latter is pushed outward against the tension of the spring 144 and out of engageinent with the'lever 140, and the pin 67 enters the hole'141,the planes of the ends of the pins 67 and 142 being in the planes of the opposed surfaces of the lever 140' and the sector web 143, respectively, so that the through gears 1 10 and 109 to sprocket 104:,

lever 68 may be moved forward and backward to move the gear 130 along the jack shaft 101. v

The gear 130 is adapted' to mesh with a gear 130 (Fig. 1) on a shaft 133 journaled A gear 140* fast on the shaft 139 meshes with the external teeth of thegear 109, said gear 109 being also provided with internal teeth adapted to engage the teeth of the slida'ble gear 130. The gear 130 is adapted to be moved longitudinally along its shaft to mesh with the gears 130 and .138 and also with the interior of the gear 109. \Vhen the gear 130 is in mesh with the gear 130, the power is transmitted-from shaft 101 through gears 130 and 130 to shaft 133; pinion 136? and gear 138 to shaft 139, gears 1&0 and 109 tol sprocket 104 and chain 105 to shaft 108, thereby gi\-"lng a slow speed in reverse direction. When the gear 130 meshes with the gear 13 8 'the power is transmitted from the shaft 101 through gears 130 and .138 to shaft 139, then said sprocket being rotated in the same direction as the shaft 101 at slow speed forward. \Vhen the gear 130 engages the interior of the gear 109 the shaft 101 is coupled directly to the sprocket '10 i and shaft 112 to drive forward at high speed.

A gear 144 is mounted on the outside of the gear 100 and meshes with a gear 146 on the shaft 40. By this connection the shaft 40 is driven from the main shaft, to cause the rotation of the turret 22. This turret or turn table is arranged to allow a turning angle of about sixty degrees.

The hand steering gear comprises a hand wheel 150 mounted at the upper end of a vertical shaft 151 (see Fig. 3) journaled in suitable bearings, and provided at its lower end with a gear 152 which meshes with a gear 154 on the upper end of'a vertical shaft 155 journaled in bearings 156 and 157.. A gear 158 (Fig. 5) is mounted on the lower end of the shaft 155- and meshes with a rack 160 slidably mounted in a guide 161. Projecting laterally from the rearof the rack 160 is anarm 162 connected by a ball-and-socket joint 164- to one end of a pitman'166, and the other end of the pitman is connected by a ball-and-socket joint 168 to an arm 169 pro jecting laterally from a reach rod 170. ,A pairof bars 172, 173 arebolted to the inner faces of the wheels 17%, 175 respectively, and these bars are pivotally connected to the ends of the reach rod 170. By this arrangement the wheels can be turned by hand thirty degrees. Inasmuch as the turntable may be operated through a range of sixty degrees, it will be seen that the co bined power and hand steering gears give a range of ninety degrees. \Vith this arrangement the wheels may be turned in their own planes while being turned for steering purposes by hand and about a common center when being turned for steering purposes by power. The power steering gear. is provided so that when the apparatus is applied to a vehicle so heavy that the wheels cannot be turned by hand when the vehicle is standing,.the power of the motor is made available for this purpose. lVhen used with a lighter vehicle it is obvious that the'power .steering mechanism and the manual steering mechanism may be used simultaneously.

What I claim is:

' 1. In combinatio'n'with a vehi axle, wheels tiltably connected thereteLnear the respective ends thereof, manually operated means for simultaneously tilting the wheels to steer the tractor, a rotatable concl'eframe, a; tractor therefor, comprlslng a transverse? nection between the vehicle frame and ,the

tractor, a driving motor on the tractor, an operative connection between the motor and the tractor Wheels,'gea ring adapted to be operatively connected to the .driving motor for turning the tractor relative to the vehicle frame and manually operated means for. selectively connecting the motor to the wheels and to the aforesaid turning gearing.

2. In combination with a vehicle frame, a tractor therefor, comprising a transverse axle, wheels tiltablv connected thereto near the respective ends thereof, manually operated means for simultaneously tilting the 'wheelsto steer the tractor, a rotatable conmotion between'the' vehicle frame and the tractor about a vertical axis through the center of the axle, a driving motor on the tractor, an operative connection between the motor and the tractor Wheels, reversible gearing adapted to be operatively connected to the driving motor for turning the tractor relative to the vehicle frame and manually operated means for selectively connectingthe motor to the wheels and to the aforesaid turning gearing. v r Y 3. In combination with a vehicle frame, and a fifth wheel member securedthereto, atwo wheel tractor, having a cooperatingfifth wheel member and comprising a transverse axle, wheels tiltably mounted nearthe respective ends thereof, a connecting link for causing the wheels to tilt in parallelism, about a pair of vertical axes through the wheel centers, manually operated means for adjusting the link for-steering the tractor,

.a driving motor having a transverse shaft,

a driving shaft parallel to the motor shaft and operatively connected to the axle, change gears and a clutch interposed betweenthe driving shaft and the motor haft, gearing z: and for governing the connection between \Vitnesses:

e'peratively conneeteti to one of the clutch my hand this 29th day of March, 1912 in membefrs foif-ifturning thetractor about the the presence of two subscribing Witnesses. axis 0 the th Wheel and manually operated means for controlling the change gears R ORTENGREN" the motor and the turning gearing. WV. CHRISTIE,-

In Witness whereof-1 have hereunto 'set WALTER B. WILSON.

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