April 17, 1962
`3,029,887
`S. J. SCHANTZ
`POWER MOWER HAVING DRIVE WHEELS CONTROLLABLE
`BY ROTATABLE HANDLE
`
`3 Sheets—Sheet 1
`
`Filed Dec. 14, 1960
`
`d -
`
`N'4).
`
`.$)
`
`cN
`/All/EP/Tog':
`"1-
`.50CRATES J. SCHANTZ,
`'zsl
`15? .4-1,46-....i,
`PT-Toler/ VS
`
`TTI
`Exhibit 1034 - Page 1
`
`

`

`April 17, 1962
`3,029,887
`S. J. SCHANTZ
`POWER MOWER HAVING DRIVE WHEELS CONTROLLABLE
`BY ROTATABLE HANDLE
`
`Filed Dec. 14, 1960
`
`3 Sheets—Sheet 2
`
`TTI
`Exhibit 1034 - Page 2
`
`

`

`9£/
`POI P/ OV
`9£7
`
`08
`
`96 79
`
`09 92 a
`
`•
`
`80/
`
`2'01
`
`ta
`
`Off 00f
`
`92
`0/'V<
`
`03/
`
`j
`
`93'f
`
`
`P
`oo<g 19
`
`017
`11!1111Ir Z3'1 91i
`111111111 I I I I 71' I/
`.(-'"
`PO/
`
`971
`
`/79/
`PZI
`Poi
`031
`
`92'
`
`9i,«
`fro/
`92
`
`L
`
`P2'
`
`07
`
`9*
`
`9PI
`92'
`
`8P/
`
`9fri
`
`09<
`
`'9T
`
`0
`
`••:r.
`
`Filed Dec.
`
`TTI
`Exhibit 1034 - Page 3
`
`

`

`United States Patent Office
`
`3,029,887
`Patented Apr. 17, 1962
`
`3,019,887
`POWER MOWER HAVING DRIVE WHEELS CON-
`TROLLABLE BY ROTATABLE HANDLE
`SocrateS J. Schantz, Box 134, Marine, 111.
`Filed Dec. 14, 1960, Ser. No. 75,703
`16 Claims. (Cl. 180-19)
`
`2
`also to provide for steering of these wheels to manipulate
`the power mower.
`Yet a further object of this invention is to provide a
`rotary power mower having power take off means trans-
`ferable to a pair of rear wheels in which the rear wheels
`may be clutched and unclutched and turned for proper
`steering operation through rotation of a handle.
`Still another object of this invention is to provide a
`This invention relates to improvements in power
`simple and novel clutching means for a pair of driven
`mowers, and, in particular, is concerned with a wheel
`wheels connected to an axle or drive shaft in which the
`driven power mower having means for controlling the 10
`turning of the wheels about a stationary pivot effects
`driven and steering relation of the wheels by a rotatable
`both the steering of the vehicle and the clutching of the
`handle.
`vehicle.
`In the past, power mowers, and particularly those of the
`Yet another object of this invention is to provide a
`rotary type, have been provided which are adapted to be
`rotary power mower having an extensible handle which
`powered by driving the rear wheels. However, these 15
`may be turned to provide steering and clutching operation
`mowers, although having various clutching means of one
`of a pair of driven wheels.
`type or another, have had no simple mechanism providing
`Yet another object of this invention is to provide a
`for both steering and clutching and unclutching of the
`rotary power mower which is adapted to be driven by
`drivewheels. The mowers of the past have been particu-
`clutchable rear wheels in which steering can be effected
`larly difficult to operate in corners or upon the sides of 20
`through operation of a handle in which the mower is
`steep terraces.
`made of conventional components and is strong and
`By means of this invention there has been provided a
`rugged in construction and can be operated in a simple
`.power mower in which the rear wheels are adapted to be
`manner by relatively unskilled operators.
`clutched and unclutched in driven relation, and in which
`Still further objects of this invention will appear in the
`steering may be effected through control of the power 25
`detailed description which follows and will be otherwise
`mower handle. The handle can be rotated about its axis
`apparent to those skilled in the art.
`to provide for both clutching and unclutching operations
`For the purpose of illustration, there is shown in the
`and also to provide for steering of the rear wheels.
`accompanying drawings a preferred embodiment of this
`Through the proper manipulation of the handle the mower
`invention. It is to be understood that these drawings are
`can be steered in both the clutched and unclutched opera- 30
`for the purpose of example and that the invention is not
`tion. Further, through the provision of extension means
`limited thereto.
`on the handle, the mower can be operated along steep
`In the drawings:
`terraces horizontally along the sides of the terrace by an
`FIGURE 1 is a top plan view of the power mower;
`operator. The operator can provide proper operation of
`FIGURE 2 is a view in side elevation of the power
`the handle to provide for cutting of the terrace either in 35
`mower showing the handle in full lines in a lowered posi-
`arcs of increasing radius by extending the handle, or,
`tion and in dotted lines showing the handle in a raised and
`where desired, can operate the mower in a horizontal
`extended position;
`direction by turning the wheels in the proper direction.
`FIGURE 3 is a view in side elevation of the mower
`The mower of this invention is particularly well adapted
`shown in a mowing position on the side of a hill;
`for use with conventional rotary mowers by proper adapta- 40
`FIGURE 4 is a rear elevational sectional view taken
`lion. It can also, however, be used in reel-type mowers
`on the line 4-4 of FIGURE 1;
`and othet types of mechanisms through the broad con-
`FIGURE 5 is an enlarged view in section taken on the
`cepts of the invention provided by the steering and clutch-
`line 5—S of FIGURE 1 showing the construction of the
`ing mechanism made possible by this contribution. It is
`power operating mechanism;
`particularly significant that the entire control of the power 45
`FIGURE 6 is an enlarged view in section taken on the
`mower is effected in both the steering and the clutching
`line 6-6 of FIGURE 1 showing the construction of the
`operation by the rotation or turning of the handle and no
`telescoping handle;
`other complicated controls are required.
`FIGURE 7 is a view in section taken on the line 7-7
`It is a further significant feature of this invention that
`0 of FIGURE 6 showing further construction of the tele-
`the mower can be operated in conventional fashion where 5
`scoping handle and locking means;
`the rear wheels are kept in an aligned direction with the
`FIGURE 8 is a view taken similarly to FIGURE 6
`axis of the mower so that it is operated with the wheels in
`with the locking band removed;
`an undriven relationship in the manner of a mower having
`' FIGURE 9 is a top plan view of the handle and shaft
`no driven wheels. Further, the mower, by proper manipu-
`element;
`lation, can be operated to cut in intricate corners adjacent 55
`FIGURE 10 is a fragmentary view in side elevation
`shrubbery and the like through the complete control pro-
`taken from the right side of the power mower and with
`vided by the steering mechanism. This operation may be
`the right rear wheel removed showing the clutch fork
`effected with the wheels in proper driven relation and
`cam in the lowered position and wheels unclutched from
`complete steering and turning of the wheels is provided
`0 the drive axle;
`6
`for by the operation of the rotatable handle.
`FIGURE 11 is a view taken similarly to FIGURE 10,
`It is, accordingly, a primary object of this invention to
`but showing the clutch fork in the elevated position in
`provide a power mower in which driven wheels may be
`which the wheels are clutched to the drive shaft;
`controlled by rotation of a mower handle.
`FIGURE 12 is an enlarged sectional view taken on an
`It is a further object of this invention to provide a
`65 axial section passing through the clutch mechanism and
`power mower in which driven wheels can be clutched and
`power transmitting mechanism;
`unclutched and rotated for proper steering by rotation of
`FIGURE 13 is an enlarged sectional view taken on the
`line 13-13 of FIGURE 10 showing the clutch fork in a
`a mower handle.
`Still another object of this invention is to provide a
`lowered position and the wheels unclutched;
`FIGURE 14 is a fragmentary view taken similarly to
`power mower having an extensible handle in which the 7
`FIGURE 13, but showing only the right wheel in a
`handle may be turned about its axis to provide for
`clutched position with the clutch fork elevated;
`Chitehed and unclutched control of driven Wheels and
`
`0
`
`TTI
`Exhibit 1034 - Page 4
`
`

`

`3,029,887
`
`5
`
`be either a two cycle or four cycle gasoline engine, or 2 0
`
`3
`4
`tions. The locking means comprises a locking member
`FIGURE 15 is an enlarged fragmentary view in side
`88 which is spring biasedly connected to the outer han-
`elevation showing a clutch plate mounted on the wheel
`dle extension element 82. The locking member has a
`and out of engagement with clutch studs mounted upon
`detent locking head 92, which is adapted to be locked
`the drive shaft:
`into locking slots 94 and 96 provided in the interior han-
`FIGURE 16 is a view taken similarly to FIGURE 15,
`dle shaft element 80. Normally, the locking detent ele-
`but showing the clutch plate and its clutch bar in clutched
`ment 92 is biased out of engagement with the slots, but
`position with the clutch studs;
`a locking ring 93 is slidable into contact with the locking
`FIGURE 17 is an enlarged top plan view of the clutch
`member 88 to depress the locking element into the slots
`block having two clutch studs; and
`
`FIGURE 18 is a schematic diagram showing the rela- 1 0 to secure the locking engagement.
`It will be noted that for rigidity of construction, and
`tive positions of the drive wheels, the clutch operating
`to minimize wear, the telescoping shaft elements 80 and
`pin and cam for clutched and unclutched operation.
`The power mower of this invention is generally in-
`82 are made up of a rectangular cross section. Thus,
`dicated by the reference numeral 20 in FIGURES 1, 2, 3,
`upon twisting of the handle, torque is eliminated from
`
`4, and 5. As there shown it is comprised of a power 1 5 the locking element when it is in the locking position
`unit, specifically an engine 22, a base 24, a pair of front
`and disposed within the aforementioned slots. Where
`caster wheels 26, a pair of drivable rear wheels 28, and
`desired, the shafts may be made of a cylindrical nature,
`an extensible and rotatable handle 30.
`however, but it will be understood that greater strain and
`The engine 22 is of conventional construction and may
`torque is then put upon the locking device.
`
`The steering mechanism whereby rotation of the han-
`other power unit such as an electric motor. It is pro-
`dle effects the steering of the rear wheels 28 further in-
`vided with a crank shaft 32 to which a rotary mower
`cludes a flexible coupling connection 100 connected on
`blade 34 is connected at the bottom.
`one side to the bottom of shaft 82 and at the other to a
`A horizontal supporting frame 36 is connected by a
`rotatable drum 102 mounted upon the frame 36. The
`pair of vertical struts 38 to the rear of the main mower 2
`5 drum 102 is provided with a steering cable 104 which is
`base 24 as best shown in FIGURES 2 and 5. The frame
`guided by guide pulleys 106 on either side of the frame.
`36 serves as a supporting mechanism for the securing ele-
`It will be noted that the drum 102 is mounted upon an
`ments attached to the handle and also serves as a support
`inclined support plate 108, which in turn is connected to
`for the rear wheels and the power take off mechanism.
`the frame. Through this arrangement rotation of the
`A gear housing 40 is pivotally connected to the rear 3
`0 handle shaft effects rotation of the drum and in turn
`of the frame 36 as best shown in FIGURES 2 and 5. This
`moves the steering cable 104 back and forth.
`housing supports a drive shaft or axle 42, which is jour-
`The steering cable 104 has one end 110 securely con-
`nalled within bosses 44 protruding from the side of the
`nected by a locking screw 112 to the drum 102, and the
`housing. The drive wheels 28 are in turn journalled upon
`other end connected to a drum 114 connected rigidly to
`3
`the ends of the drive shaft or axle 42.
`5 the top of the gear housing 40. The end connected to the
`The power take off mechanism of this invention starts
`gear housing drum is also adapted to be adjustably locked
`with the pulley wheel 46 which is keyed to the crankshaft
`in place by a locking screw 116. As shown in the draw-
`32 of the engine. A counter shaft 48 is rotatably jour-
`ings, the steering cable 104 is wound around the drums
`nailed in the rear of subextension 50 of the main base
`114 and 102 at least one full revolution in order to pro-
`24. The power transfer means comprising a pulley wheel 4
`() vide the necessary friction to impart movement to these
`52 keyed to the counter shaft 48 provides for power trans-
`elements as will be well understood.
`fer from the crankshaft and the pulley wheel 46 by a
`The clutching mechanism for engaging and disengaging
`pulley belt 54. The top of the counter shaft 48 is jour-
`the wheels from driving operation upon the rotation of
`nailed within the frame 36 and is connected to a top
`the steering handle is best shown in FIGURES 5 and 10
`counter shaft pulley wheel 56. This power means in turn 4
`5 through 17. As there shown, it includes as its main com-
`is transferred to a worm gear shaft 58 journalled in the
`ponent a cam 120 which is carried in stationary relation-
`gear housing 40 and connected to a top worm gear pulley
`ship by the frame, a cam contacting pin 122, and con-
`v✓heel 60 as shown in FIGURE 5. The top worm gear
`nected clutch fork 124, which are rotatably supported by
`pulley wheel 60 is connected to the top countershaft
`the gear housing, and a wheel clutching mechanism, gen-
`pulley wheel 56 by the pulley belt 62. Power from the 5
`erally indicated by the reference numeral 126.
`worm gear shaft 58 is transferred to the gear wheel 64
`The cam 120 is best shown in FIGURE 12 and as there
`meshing with the worm gear 66 provided at the bottom
`shown is rigidly connected to the frame by a connecting
`of the worm gear shaft. The gear wheel 64 is in turn
`plate 128. The cam extends over approximately 120
`keyed to the driveshaft or axle 42 to furnish power to
`degrees of a circular arc and is positioned in a forwardly
`the rear driving wheels 28.
`5
`5 direction. The cam 120 fits within the open portion of
`The rotatable steering handle 30 is best shown in FIG-
`the drum 114 formed at the upper part of the gear hous-
`URES 1, 2, 5, 6, 7, 8, and 9. As there shown it is com-
`ing for protection. As shown in FIGURE 12, the cam
`prised of a bifurcated handle frame 68, which is con-
`is adapted to engage an upwardly biased contacting pin
`nected at the bottom end to brackets 70 mounted upon
`122. The upward biasing is effected by a biasing spring
`the base of the mower. The handle frame is further 6
`0 132. The contacting pin 122 is guided within a bearing
`provided with a sleeve 72 which is mounted on the mower
`portion 134 connected to the side of the gear housing and
`handle frame in pivotal relation by stubshafts 74 pro-
`is guided at the top by a guide opening 135 positioned
`vided with locking nuts at both ends indicated by the nu-
`in the lower portion of the drum 114.
`meral 76.
`The clutch fork 124, as best shown in FIGURES 12
`The mower handle further is composed of a handle 6
`5 and 13, is rigidly connected to the contacting pin 122.
`bar element 78, which is of the cross bar type and is con-
`It is comprised of left hand and right hand arms 136 and
`nected to an extensible handle shaft 80. The handle shaft
`133, respectively. For the purpose of illustration only,
`80 is of a tubular construction and nests within a fur-
`one arm will be described as it will be understood that
`ther handle extension shaft 82. The handle shaft exten-
`the construction of both of these is identical except for
`sion 82 is provided with a cylindrical bearing element 84, 7
`0 reversal of the camming element as will be apparent from
`which nests within and fits slidably within the sleeve 72
`FIGURE 13. The left hand arm 136 has a bifurcated
`of the bifurcated handle frame.
`lower portion with two cam elements 140 and 142, which
`It will be noted that a locking means, generally desig-
`fit over the axle in guided relation and are adapted to
`nated by the reference numeral 86, provides for locking
`contact a cam surface 144 formed upon the boss 44 con-
`
`of the handle extension in one of several extended posi- 7 5 netted to the side of the gear housing. The cam surface
`
`TTI
`Exhibit 1034 - Page 5
`
`

`

`3,029,887
`
`10
`
`20
`
`25
`
`30
`
`35
`
`40
`
`45
`
`5
`144 and the boss 44 further serve as a bearing for the
`drive shaft 42 as appears in FIGURE 13. Both arms 136
`and 138 are capable of flexing a slight degree and it will
`be understood that when they are urged downWardly by
`the contact of the contacting pin with the Cain, the lower 5
`ends of the arms move outwardly, because of the con-
`tact Of the cam elements 140 and 142 with the cam sur-
`face. This outward movement of the arms causes the
`wheels to move outwardly and disengage from the clinch
`position.
`As shown in FIGURES 13 thrdugh 17, a clutch block
`146 is keyed to each end of the drive shaft. This clutch
`block, as shown in FIGURES 13 and 17, is provided with
`a pair of clutch studs 148 which are engageable by a
`clutch bar as will appear hereinbelow. When so engaged 15
`there is driving relation established in full clutching oper-
`ation.
`The clutch plate or member 126 is best shown in FIG-
`URES 13 through 16. As there shown it comprises a
`hub element 150, which is secured to each of the drive
`wheels. The hub member 150 is provided at the hub end
`with a clutch bar 152, which is provided by cutting out
`the face of the hub end. This is best shown in FIGURES
`13 and 15 and 16.
`The clutching operation can be readily understood by
`referring to FIGURE 13. As there shown a compres-
`sion spring 154 is axially fitted over the driveshaft with
`one end bearing against the clutch block 146 and the other
`end bearing against the inside of the drive wheel. This
`bias spring therefore urges the wheel inwardly to a limit-
`ing movement defined by contact with the clutch fork
`136. Since the clutch fork 136 is in the downwardly oper-
`ated position, as shown in FIGURE 13, it is moved slight-
`ly outwardly and therefore the drive wheel is moved out-
`wardly so that the clutch bar 152 does not engage the
`clutch studs 148 upon the clutch block. Therefore, in the
`position shown in FIGURE 13, both of the drive wheels
`are in free wheeling operation and are not clutched.
`For the fully clutched operation, reference is made to
`FIGURE 14. In this position it will be noted that the
`clutch fork 138 is in the upwardly operated position. In
`this position, due to the camming action of the cam fingers
`140 and 142 with the cam surface 144, the clutch fork
`is moved inwardly. This in turn permits the drive wheel
`to follow it because of the action of the biasing spring.
`As the wheel moves inwardly the clutch bar 152 is en-
`gaged between the clutch studs 148 of the clutch block in
`the relationship shown in FIGURE 16. This establishes
`the wheels in the fully driven operation so that they may
`be powered and driven by the rotation of the driveshaft.
`Operation
`The power mower of this invention is very simply oper-
`ated by starting the engine in conventional fashion with
`the mower drive wheels in the neutral position. For con-
`venient reference to the position of the drive wheels, FIG-
`URE 18 shows the wheel directions for clutched and un-
`clutched operation.
`FIGURE 18 is a schematic top plan view of the cam
`120 and the contacting pin 122. It will be recalled that
`the cam 120 is connected to the frame and is stationary,
`while the contacting pin 122 is carried by the gear hous-
`ing and rotates as the wheels are turned by the rotation
`of the handle. In the position shown in FIGURE 18, the
`contacting pin 122 is in the upward or wheel clutched
`position since it is out of engagement with the cam. The
`arcuate movement of the wheels and the contacting pin,
`through the arc identified by the reference numeral 160,
`defines the clutched operation. When the contacting pin
`is turned to contact the cam 120 in the path indicated by
`the arc 162, the wheels are unclutched and in effect they
`are in the neutral position. It is in this neutral or un-
`clutched position defined by the arc 162 where the con-
`tacting pin contacts the cam that the engine is first started. 75
`
`60
`
`6
`With the 'engine started, the crankshaft 32 rotates and
`imparts power to the mower blade 34 in the usual fashion.
`With the rotation of the crankshaft 32 the pulley wheel 46
`is also rotated and imparts power to the countershaft 48
`by the pulley belt 54 passing over the lower pulley Wheel
`52. The rotation of the countershaft 48 in turn imparts
`rotary movement to the top pulley wheel 56 and power
`is transferred through the pulley belt 62 to the rear pulley
`wheel 60 that is geared to the shaft 58 of the worm
`gear 66. The worm gear 66 in turn transmits motion
`to the gear wheel 64 keyed to the drive shaft. Thtts, it
`will be Seen that the drive Shaft 42 is continually moved.
`It is the operation of the clutching mechanism that con-
`nects and disconnects the drive wheels from drive rela-
`tion with respect to the drive shaft 42. This operation
`will be described below after the operation of the steer-
`ing handle mechanism.
`The handle of the mower 78 may be extended very sim-
`ply by moving the lock ring 96 shown in FIGURE 6 and
`extending the shaft 80 by moving it in the direction of the
`dotted line of FIGURE 1. The slot 96 is then placed
`in registry with the locking head or detent 92 in this
`extended position. When so placed in registry, the lock-
`ing ring 96 is then moved to the locking position of
`FIGURE 6.
`The handle bar 78 of the handle can be very simply
`rotated or twisted about the axis of the handle shafts 80
`and 82. When so twisted or turned the shafts rotate
`with respect to the bearing sleeve 72 through virtue of
`the cooperating relationship of the cylindrical bearing ele-
`ment 84. As the shaft is turned, rotary movement is
`imparted through the flexible coupling 100 to the drum
`102. The rotary motion of this drum will cause move-
`ment of the steering cable to turn the drum 114 mounted
`and rigidly secured to the top of the gear housing. This
`movement in turn imparts turning movement to the drive
`wheels. As this movement is imparted, since the wheels
`are supported by gear housing and since the contacting
`pin is also supported by the gear housing, it will be evident
`that the contacting pin also moves in relative rotary rela-
`tion with respect to the cam 120.
`When it is desired to place the wheels in, clutched op-
`eration, the steering handle 78 is turned to a degree such
`that the contacting pin 122 moves out from under the
`cam 120. The drive operation is shown through the arc
`160 and is approximately 240°. It will be understood,
`however, that the arcuate length can be changed where
`desired. As the contacting pin 122 is moved away from
`underneath the cam, it will be biased to the upward posi-
`tion. This in turn lifts the clutch fork 124. Then, as
`the clutch arms 140 and 142 are moved upwardly from
`the drive shaft, to the position shown in FIGURE 14, the
`wheels and the clutch member 150 are moved inwardly.
`This inward movement is effected by the biasing spring
`154 and causes the engagement of the clutch bar 1.52
`With the clutch studs 148 of the clutch block Mounted
`upon the ends of the drive shaft. When the clutching
`operation above described is effected, full driving opera-
`tion is accomplished from the various driving eleinents
`to the drive shaft and to the drive Wheels 28.
`From the above description it will be evident that
`the turning of the mower handle bar 78 can both steer
`the wheels and clutch and unclutch the drive wheels
`28. Thus, full control from the neutral position to the
`drive position for the wheels is effected merely by turn-
`ing the handle bar.
`In the use of the mower it will be evident ihat it may
`be used to cut any desired path merely by proper steer-
`ing through the totatiOn of the handle bar 78. Where
`desired, it may be used to Cut along the profile of a
`terrace by a man walking along the top or side of the
`terrace. This is effected by turning the drive wheels to
`a perpendicular position with respect to the axis of the
`mower handle. Also, where desired, the mower may be
`used to cut arcs of increasing radius. This again May
`
`50
`
`55
`
`65
`
`70
`
`TTI
`Exhibit 1034 - Page 6
`
`

`

`3,029,887
`
`7
`be effected by an operator standing at the top of the
`terrace and running the mower back and forth in arcs
`of gradually increasing radius. This increasing radius
`may be effected by extending the handle through the tele-
`scopic extension previously described.
`The mower may also be used in conventional fashion
`when the wheels are in the neutral position. This is
`similar to a conventional mower which has rear wheels
`that are not driven in any fashion at all. Thus, the mower
`may be changed from the drive position in varying direc-
`tion of steering relationship through any desired direc-
`tion of the driven wheels clutched or unclutched.
`Various changes and modifications may be made for
`the mower of this invention as will be readily apparent
`to those skilled in the art. Thus, as an example, where
`greater weight over the drive wheel for greater traction
`is desired, the engine may be placed directly over the
`gear housing to provide direct power through the worm
`gear and pulleys may be used through a power take
`off to provide power to the mower blade. Other obvious
`changes and modifications may also be made and will be
`within the scope and teaching of this invention as de-
`fined by the claims appended hereto.
`What is claimed is:
`1. A power mover having a power unit mounted upon
`a base and having separate pairs of front and rear wheels,
`an elongated handle and manual means for turning said
`handle about its longitudinal axis, means for steering the
`power mower by turning said rear wheels about a vertical
`axis and means for clutching and unclutching said rear
`wheels to the power unit, both said steering means and
`said clutching means cooperating with said handle, said
`means comprising, a gear housing supporting the rear
`wheels, and connecting means between said elongated
`handle and the gear housing for rotating the housing and
`the rear wheels as said handle is turned, said means for
`clutching and unclutching said rear wheels being respon-
`sive to the turning of said handle.
`2. A power mower having a power unit mounted upon
`a base and having separate pairs of front and rear wheels,
`an elongated handle and manual means for turning said
`handle about its longitudinal axis, means for steering the
`power mower by turning said rear wheels about a vertical
`axis and means for clutching and unclutching said rear
`wheels to the power unit, both said steering means and
`said clutching means cooperating with said handle, said
`means comprising, a gear housing supporting the rear
`wheels, and connecting means between said elongated
`handle and the gear housing for rotating the housing and
`the rear wheels as said handle is turned, said means for
`clutching and unclutching said rear wheels being re-
`sponsive to the turning of said handle, said last named
`means comprising a clutch member operable by the turn-
`ing of said housing to clutch and unclutch the rear wheels
`to the power unit.
`3. A power mower having a power unit mounted upon
`a base and having separate pairs of front and rear wheels,
`an elongated handle and manual means for turning said
`handle about its longitudinal axis, and means for clutch-
`ing and unclutching said rear wheels to the power unit,
`said last named means comprising a clutch member sup-
`ported by a housing in which the rear wheels are jour-
`nailed, and said clutch member including an operating
`pin relatively movable with respect to a cam and con-
`necting means between the clutch member and the elon-
`gated handle for translating the turning of said handle
`to the relative movement between the operating pin and
`the cam.
`4. A power mower having a power unit mounted upon
`a base and having separate pairs of front and rear wheels,
`an elongated handle and manual means for turning said
`handle about its longitudinal axis, and means for clutch-
`ing and unclutching said rear wheels to the power unit,
`said last named means comprising a clutch member sup-
`ported by a housing in which the rear wheels are jour-
`
`8
`nailed, and said clutch member including an operating
`pin relatively movable with respect to a cam and con-
`necting means between the clutch member and the elon-
`gated handle for translating the turning of said handle to
`5 the relative movement between the operating pin and
`the cam, said connecting means comprising a drum con-
`nected to the elongated handle and a drum cable con-
`necting the drum with said clutch member.
`5. A power mower having a power unit mounted upon
`10 a base and having separate pairs of front and rear wheels,
`an elongated handle and manual means for turning said
`handle about its longitudinal axis, means for steering the
`power mower by turning said rear wheels about a vertical
`axis and means for clutching and unclutching said rear
`15 wheels to the power unit, both said steering means and
`said clutching means cooperating with said handle, said
`means comprising, a gear housing supporting the rear
`wheels, and connecting means between said elongated
`handle and the gear housing for rotating the housing and
`20 the rear wheels as said handle is turned, said means for
`clutching and unclutching said rear wheels being respon-
`sive to the turning of said handle, said clutching means
`including a clutch member supported by said gear hous-
`ing, the clutch member including an operating pin rela-
`25 tively movable with respect to a cam.
`6. A power mower having a power unit mounted upon
`a base and having separate pairs of front and rear wheels,
`an elongated handle and manual means for turning said
`handle about its longitudinal axis, means for steering the
`30 power mower by turning said rear wheels about a vertical
`axis and means for clutching and unclutching said rear
`wheels to the power unit, both said steering means and
`said clutching means cooperating with said handle, said
`means comprising, a gear housing supporting the rear
`35 wheels, and connecting means between said elongated
`handle and the gear housing for rotating the housing and
`the rear wheels as said handle is turned, said means for
`clutching and unclutching said rear wheels being respon-
`sive to the turning of said handle, said clutching means
`40 including a clutch member supported by said gear hous-
`ing, the clutch member including an operating pin rela-
`tively movable with respect to a cam and the connecting
`means comprising a drum connected to the elongated
`handle and a drum cable connecting the drum with said
`45 clutch member.
`7. A power mower having a power unit mounted upon
`a base and having separate pairs of front and rear wheels,
`an elongated handle and manual means for turning said
`handle about its longitudinal axis, means for steering the
`50 power mower by turning said rear wheels about a vertical
`axis and means for clutching and unclutching said rear
`wheels to the power unit, both said steering means and
`said clutching means cooperating with said handle, said
`means comprising a gear housing supporting
`the
`55 rear wheels, and connecting means between said elon-
`gated handle and the gear housing for rotating the
`housing and the rear wheels as said handle is turned, said
`means for clutching and unclutching said rear wheels
`being responsive to the turning of said handle, said clutch-
`60 ing means including a clutch member supported by said
`gear housing, the clutch member including an operating
`pin carried by said housing and being movable with re-
`spect to said housing, and a cam mounted upon a sta-
`tionary frame of the power mower, said cam being en-
`55 gageable by the operating pin as said housing is rotated
`to clutch and unclutch the rear wheels.
`8. A power mower having a power unit mounted upon
`a base and having separate pairs of front and rear wheels,
`an elongated handle and manual means for turning said
`70 handle about its longitudinal axis, and means for clutch-
`ing and unclutching said rear wheels to the power unit,
`said last named means comprising a clutch member and
`connecting means connecting the clutch member to the
`elongated handle, said clutch member comprising a ver-
`75 tically movable clutch fork engageable with a. clutch
`
`TTI
`Exhibit 1034 - Page 7
`
`

`

`3,029,887
`
`9
`block mounted upon a drive shaft supporting said rear
`wheels to clutch and unclutch said wheels to the drive
`shaft.
`9. A power mower having a power unit mounted upon
`a base and having separate