Trailer hitch

Claim 2

A hitch comprising: a. a drawbar, b. a pair of vertically extending spaced apart, parallel channel forming members, the members being mounted on the drawbar, each member having one edge thereof provided with a plurality of regularly spaced, aligned serrations along the vertical extent thereof, each one serration on one edge of one member being in registry with one serration on one edge of the other member, c. a ball for attaching a towing implement thereto, d. a tongue having the ball mounted thereonto, the tongue having a portion thereof provided with regularly spaced, aligned serrations which are complementary to and which nest in the serrations formed on the channel forming members, e. means for securing the tongue in a fixed position to the channel forming members, and wherein the ball is incrementally vertically adjustable by nesting the tongue serrations in selected channel forming serrations and the tongue securing means urges the serrations of the tongue into nesting relationship with the serrations of the channel forming members.

Claim 3

The hitch of claim 1 which further comprises: means for attaching the hitch to a towing vehicle.

Claim 4

The hitch of claim 1 wherein: the means for securing the tongue comprises: a. an elongated threaded bolt having one end secured to the tongue and extending through the channel defined between the channel forming members, the bolt having the free end thereof extending beyond the depth of the channel, b. a washer mounted on the free end of the bolt and adapted to abut against the channel forming members, c. a rotatable handle threadably mounted onto the free end of the bolt, and wherein rotation of the handle in a first direction urges the washer into abutment with the channel forming members and urges the serrations of the tongue into nesting relationship with the serrations of the channel forming members.

Claim 5

In a trailer hitch for use in towing an agricultural implement with a tractor having a three point hitch, the improvement which comprises: a. a drawbar, b. a pair of vertically extending, spaced apart, parallel channel forming members, the members being mounted on the drawbars, each member having one edge thereof provided with a plurality of regularly spaced, aligned serrations along the vertical extent thereof, each one serration on one edge of one member being in registry with one serration on one edge of the other member, c. a ball for attaching an agricultural implement to the trailer hitch: d. a tongue having the ball mounted thereonto, the tongue having a portion thereof provided with regularly spaced, aligned serrations which are complementary to and which nest in the serrations formed in the channel forming members, e. means for securing the tongue in a fixed position to the channel forming members, f. means for attaching the trailer hitch to the three point hitch, and wherein the ball is incrementally vertically adjustable by nesting the tongue serrations in selected channel forming member serrations and the tongue securing means urges the serrations of the tongue into nesting relationship with the associated serrations in the channel forming members.

Claim 6

In a trailer hitch for use in towing an agricultural implement with a tractor having a three point hitch, the improvement which comprises: a. a drawbar, b. a pair of vertically extending, spaced apart, parallel channel forming members, the members being mounted on the drawbars, each member having one edge thereof provided with a plurality of regularly spaced, aligned serrations along the vertical extent thereof, each one serration on one edge of one member being in registry with one serration on one edge of the other member, c. a ball for attaching an agricultural implement to the trailer hitch: d. a tongue having the ball mounted thereonto, the tongue having a portion thereof provided with regularly spaced, aligned serrations which are complementary to and which nest in the serrations formed in the channel forming members, e. means for securing the tongue in a fixed position to the channel forming members, f. means for attaching the trailer hitch to the three point hitch, and wherein the ball is incrementally vertically adjustable by nesting the tongue serrations in selected channel forming member serrations and the tongue securing means urges the serrations of the tongue into nesting relationship with the associated serrations in the channel forming members.

Claim 7

The improvement of claim 4 wherein: the tongue comprises: a. a strap having first and second arms, the arms being perpendicular to each other, the ball being mounted on the first arm, b. a pair of spaced apart, parallel flanges extending outwardly from the lateral edges of the second arm, and

Claim 8

The improvement of claim 5, wherein: the means for securing the tongue comprises: a. an elongated threaded bolt having one end secured to the second arm, the bolt extending through and projecting beyond the channel defined between the channel forming members, b. a washer mounted on the free end of the bolt and adapted to abut against the channel forming members, c. a rotatable handle threadably mounted onto the free end of the bolt, and wherein rotation of the handle in a first direction urges the washer into abutment with the channel forming members and urges the serrations on the flanges into nesting relationship with the associated serrations in the channel forming members.

Claim 9

The improvement of claim 4 wherein: the means for securing the tongue comprises: a. an elongated threaded bolt having one end secured to the tongue and extending through the channel defined between the channel forming members, the bolt having the free end thereof projecting beyond the depth of the channel, b. a washer mounted on the free end of the bolt and adapted to abut against the channel forming members, c. a rotatable handle threadably mounted onto the free end of the bolt, and wherein rotation of the handle in a first direction urges the washer into abutment with the channel forming members and urges the serrations of the tongue into nesting relationship with the serrations of the channel forming members.

Claim 10

A hitch, comprising: a. drawbar, b. a pair of vertically extending spaced apart, parallel channel forming members, the members being mounted on the drawbar, each member having one edge thereof provided with a plurality of serrations along the vertical extent thereof, each one serration on one edge of one member being in registry with one serration on one edge of the other member, c. a ball for attaching a towing implement thereto, d. a tongue having the ball mounted thereonto, the tongue having a portion thereof provided with serrations which are complementary to and which nest in the serrations formed on the channel forming members, e. means for securing the tongue in a fixed position to the channel forming members, comprising:

Claim 11

A hitch, comprising: a. drawbar, b. a pair of vertically extending spaced apart, parallel channel forming members, the members being mounted on the drawbar, each member having one edge thereof provided with a plurality of serrations along the vertical extent thereof, each one serration on one edge of one member being in registry with one serration on one edge of the other member, c. a ball for attaching a towing implement thereto, d. a tongue having the ball mounted thereonto, the tongue having a portion thereof provided with serrations which are complementary to and which nest in the serrations formed on the channel forming members, e. means for securing the tongue in a fixed position to the channel forming members, comprising:

Claim 12

an elongated threaded bolt having one end secured to the tongue and extending through the channel defined between the channel forming members, the bolt having the free end thereof extending beyond the depth of the channel, 2. a washer mounted on the free end of the bolt and adapted to abut against the channel forming members, 3. a rotatable handle threadably mounted onto the free end of the bolt, and wherein the ball is incrementally vertically adjustable by nesting the tongue serrations in selected channel forming member serrations and rotation of the handle in a first direction urges the washer into abutment with the channel forming members and urges the serrations of the tongue into nesting relationship with the serrations of the channel forming members.

Claim 13

an elongated threaded bolt having one end secured to the tongue and extending through the channel defined between the channel forming members, the bolt having the free end thereof extending beyond the depth of the channel, 2. a washer mounted on the free end of the bolt and adapted to abut against the channel forming members, 3. a rotatable handle threadably mounted onto the free end of the bolt, and wherein the ball is incrementally vertically adjustable by nesting the tongue serrations in selected channel forming member serrations and rotation of the handle in a first direction urges the washer into abutment with the channel forming members and urges the serrations of the tongue into nesting relationship with the serrations of the channel forming members.

Claim 14

The hitch of claim 8 wherein: the tongue comprises: a. a strap having a first and second arms, the arms being perpendicular to each other, the ball being mounted on the first arm, b. a pair of spaced apart, parallel flanges extending outwardly from the lateral edges of the secound arm, and wherein the tongue serrations are formed along the extent of each of the flanges.

Claim 15

The hitch of claim 8 wherein: the bolt is secured to the second arm.

Claim 16

The hitch of claim 8 wherein: the towing implement is an agricultural implement, the hitch being a tractor-associated trailer hitch.

Claim 17

The hitch of claim 11 which further comprises: means for attaching the hitch to a three point hitch.

Claim 18

In a hitch of the type having a drawbar, a pair of channel forming members adapted to receive a ball-carrying tongue, the improvement which comprises: means for securing the tongue to the channel forming members comprising: a. an elongated threaded bolt having one end secured to the tongue and extending through the channel defined between the channel forming members, the bolt having the free end thereof extending beyond the depth of the channel, b. a washer mounted on the free end of the bolt and adapted to abut against the channel forming members, c. a rotatable handle threadably mounted onto the free end of the bolt, and wherein rotation of the handle in a first direction urges the washer into abut with the channel forming members and urges the tongue into secure engagement with the channel forming members.

Claim 19

In a hitch of the type having a drawbar, a pair of channel forming members adapted to receive a ball-carrying tongue, the improvement which comprises: means for securing the tongue to the channel forming members comprising: a. an elongated threaded bolt having one end secured to the tongue and extending through the channel defined between the channel forming members, the bolt having the free end thereof extending beyond the depth of the channel, b. a washer mounted on the free end of the bolt and adapted to abut against the channel forming members, c. a rotatable handle threadably mounted onto the free end of the bolt, and wherein rotation of the handle in a first direction urges the washer into abut with the channel forming members and urges the tongue into secure engagement with the channel forming members.