PORTABLE DOCK LEVELLERS
First Claim
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1. A portable dock leveller, comprising :
- a ramp platform having a wing hinged to and projecting from one side of said platform;
said wing adapted to normally extend over an opening between a dock on which the platform is supported and the floor of an adjacent carrier, for passage therebetween;
resilient means for hinge lifting the wing on the platform;
releasable frictional means for preventing the wing from such lifting;
wheels mounted below the platform;
means for lifting the platform and wing on said wheels to a locked position for guided transport thereon; and
means for releasing the platform from said locked position.
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Abstract
A dock platform having a resiliently pivot-liftable wing on one side thereof which is adapted to bridge a space between a dock and the floor of an adjacent carrier, when lowered, for transport of material thereover, said wing being frictionally locked against said lifting until released by a foot pedal; ground wheels rockably mounted on one side and a castered dolly hinged to the opposite side of the platform, and said parts interconnected, for raising the platform thereon to an elevated and locked position by a lever, for portability of the platform and wing; and a second foot pedal for the release of the platform from said elevated and locked position onto the dock.
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Citations
5 Claims
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1. A portable dock leveller, comprising :
- a ramp platform having a wing hinged to and projecting from one side of said platform;
said wing adapted to normally extend over an opening between a dock on which the platform is supported and the floor of an adjacent carrier, for passage therebetween;
resilient means for hinge lifting the wing on the platform;
releasable frictional means for preventing the wing from such lifting;
wheels mounted below the platform;
means for lifting the platform and wing on said wheels to a locked position for guided transport thereon; and
means for releasing the platform from said locked position.
- a ramp platform having a wing hinged to and projecting from one side of said platform;
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2. A portable dock leveller as defined in claim 1, wherein a lever is carried by said wing at the hinge thereof and a spring acts on said lever for said resilient hinge lifting of the wing;
- and a foot control mechanism is provided for releasing said frictional means to permit such wing lifting.
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3. A portable dock leveller as defined in claim 1, wherein said wheels are arm mounted under one side of the platform and a caster-supported dolly is hinged to the opposite side thereof;
- and said wheel arm mounting is connected to the dolly for simultaneous lift of both sides of the platform thereon, and to said lifted elevated position; and
a foot operated mechanism is provided for said platform release means.
- and said wheel arm mounting is connected to the dolly for simultaneous lift of both sides of the platform thereon, and to said lifted elevated position; and
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4. A portable dock leveller as defined in claim 1, wherein said wing is downwardly and pressure movable against said releasable frictional means.
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5. A portable dock leveller, comprising:
- a ramp platform having a wing hinged to and projecting from a high side thereof;
said wing adapted to normally extend over a spacing between a dock on which the platform is supported and the floor of an adjacent carrier, for passage of goods thereover;
a tripedal having one foot thereof carried by the hinge of the wing;
a second foot of said tripedal attached to the side of the wing and a third foot thereof connected by a spring with the platform, for resilient hinge lifting of said wing;
frictional means for preventing the wing from said lifting and permitting down pressed movement thereof;
manually operable means for releasing said frictional means;
wheels mounted on swingable arms carried by a second side of said platform;
a caster-supported dolly hinged to the platform on the side remote from said wheels, and said dolly link-connected with said swingable arms;
a lever carried by the platform and operable against the dolly for lift of the platform on the dolly and wheels to a locked elevated position; and
a manually operable mechanism for the release of said elevated platform from said locked position.
- a ramp platform having a wing hinged to and projecting from a high side thereof;
Specification