Trailers

Claim 2

A trailer comprising: a load bearing section having a front end and a rear end; a wheel carrying assembly constructed and arranged to, in a first position and in association with a towing vehicle, support said load bearing section in a substantially horizontal disposition for towing in the conventional manner comprising, a wheel mounting axis extending transversely to the normal direction of travel of said load bearing section, and means for allowing arcuate displacement of said axis with respect to said load bearing section from said first position to a second position towards said rear end of said load bearing section; a pair of wheels mounted on said wheel carrying assembly at spaced positions on said wheel mounting axis; guide means mounted on said load bearing section adjacent the front edge thereof and projecting below the underside thereof; a draw bar passing through said guide means in sliding relationship therewith and projecting beyond the front end of said load bearing section, and means to pivotally connect said draw bar to said wheel carrying assembly to be displaceable therewith with respect to said load bearing section so that displacement of said wheel mounting axis from said first position to said second position displaces said draw bar through said guide means thereby reducing the projection of said draw bar beyond the front end of said load bearing section.

Claim 3

A trailer as claimed in claim 1 and further comprising means to lock said load bearing section and said wheel carrying assembly in said first and second positions.

Claim 4

A trailer as claimed in claim 1 wherein said wheel carrying assembly further comprises: a cross member; means to allow displacement of said cross member with respect to said load bearing section; said pair of wheels being mounted on said cross member a sub-frame projecting from said cross member for movement therewith; and means for pivotally connecting said draw bar to said sub-frame at a point spaced from the axis of said cross member.

Claim 5

A trailer as claimed in claim 3 wherein said means to allow arcuate displacement of said cross member comprises: a pair of spaced mounting plates on said cross member; and means to pivotally connect said plates to said load bearing section.

Claim 6

A trailer as claimed in claim 3 wherein said sub-frame comprises a substantially U-shaped member projecting from said cross member.

Claim 7

A trailer as claimed in claim 5 wherein said draw bar is pivotally connected to the cross bar of said U-shaped sub-frame.

Claim 8

A trailer as claimed in claim 6 wherein said means to pivotally connect said draw bar to said sub-frame further comprises means to lock the position of said wheel carrying assembly with respect to said load bearing section.

Claim 9

A trailer comprising: a load bearing section having a front end and a rear end; a wheel carrying assembly constructed and arranged to, in a first position and in association with a towing vehicle, support said load bearing section in a substantially horizontal disposition for towing in the conventional manner comprising, a cross-member having an axis extending transversely to the normal direction of travel of said load bearing section, and means for mounting said cross-member to said load bearing section for allowing arcuate displacement of said cross-member with respect to said load bearing section from said first position to a second position towards said rear end of said load bearing section; a pair of wheels mounted in spaced relationship on said cross-member; a substantially U-shaped sub-frame projecting from said cross-member for movement therewith; a draw bar projecting beyond the front end of said load bearing section; and means for pivotally connecting said draw bar with said sub-frame at a point spaced from said axis of said cross-member to be displaceable therewith with respect to said load bearing section so that displacement of said wheel carrying assembly from said first position to said second position reduces the projection of said draw bar beyond the front end of said load bearing section comprising, a boss fixed to said sub-frame, a plurality of bores through the periphery of said boss, a pin mounting block projecting from said draw bar, an arcuate shaped section on said pin mounting block for sliding engagement over the periphery of said boss, a bracket surrounding said boss and engageable with said pin mounting block to maintain the periphery of said boss in sliding engagement with the arcuate section of said pin mounting block, and a pin slidable within said pin mounting block projecting through said arcuate section of said pin mounting block to selectively engage in said bores provided through the periphery of said boss to lock the position of said wheel carrying assembly with respect to said load bearing section.

Claim 10

A trailer comprising: a load bearing section having a front end and a rear end; a wheel carrying assembly constructed and arranged to, in a first position and in association with a towing vehicle, support said load bearing section in a substantially horizontal disposition for towing in the conventional manner comprising, a cross-member having an axis extending transversely to the normal direction of travel of said load bearing section, and means for mounting said cross-member to said load bearing section for allowing arcuate displacement of said cross-member with respect to said load bearing section from said first position to a second position towards said rear end of said load bearing section; a pair of wheels mounted in spaced relationship on said cross-member; a substantially U-shaped sub-frame projecting from said cross-member for movement therewith; a draw bar projecting beyond the front end of said load bearing section; and means for pivotally connecting said draw bar with said sub-frame at a point spaced from said axis of said cross-member to be displaceable therewith with respect to said load bearing section so that displacement of said wheel carrying assembly from said first position to said second position reduces the projection of said draw bar beyond the front end of said load bearing section comprising, a boss fixed to said sub-frame, a plurality of bores through the periphery of said boss, a pin mounting block projecting from said draw bar, an arcuate shaped section on said pin mounting block for sliding engagement over the periphery of said boss, a bracket surrounding said boss and engageable with said pin mounting block to maintain the periphery of said boss in sliding engagement with the arcuate section of said pin mounting block, and a pin slidable within said pin mounting block projecting through said arcuate section of said pin mounting block to selectively engage in said bores provided through the periphery of said boss to lock the position of said wheel carrying assembly with respect to said load bearing section.

Claim 11

A trailer as claimed in claim 8 wherein the construction and arrangement is such that when said trailer is in said second position the load bearing section, wheel carrying assembly and draw bar are tiltable into a substantially vertical position wherein the wheels on said wheel carrying assembly are out of contact with the ground and said trailer is supported at least partly by the connection between said draw bar and said sub-frame.

Claim 12

A trailer as claimed in claim 9 wherein said connection between said draw bar and sub-frame includes a castor projecting from the rear edge thereof.

Claim 13

A trailer as claimed in claim 10 and further comprising: a pair of spaced castors mounted on the rear edge of said load bearing section.

Claim 14

A trailer as claimed in claim 11 and further comprising: a bumper provided across the rear edge of said load bearing section, said castors being mounted on said bumper.