Mechanical sweepers
First Claim
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1. In a mechanical sweeper comprising a roller brush arranged to throw rubbish forwardly of the sweeper, a hopper mounted on the sweeper to receive rubbish from the roller brush, suction means, and a filter interposed between the hopper and the suction means, the improvement comprising:
- a support frame mounted on the sweeper;
a lifting arm pivotably mounted at one end thereof to the upper end of said support frame;
a fork carried at the other end of the lifting arm, the fork pivotably mounting said hopper;
arm-pivoting and hopper-tilting means mounted on the support frame, the lifting arm and the fork, for pivoting said lifting arm to thereby raise said hopper and maintain said hopper in an upright state during sweeping and lifting respectively, and for tilting the hopper from the upright state to thereby empty the hopper after the lifting arm has been raised to a predetermined pivoted position.
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Abstract
The specification discloses a mechanical sweeper having a roller brush which throws rubbish forward in the direction of travel into a collecting hopper. The hopper is mounted in a fork carried by a lifting arm and the arrangement is such that actuation of the lifting arm does not cause tipping of the hopper. Separate means are provided for tipping the hopper at any desired moment during lifting.
7 Citations
6 Claims
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1. In a mechanical sweeper comprising a roller brush arranged to throw rubbish forwardly of the sweeper, a hopper mounted on the sweeper to receive rubbish from the roller brush, suction means, and a filter interposed between the hopper and the suction means, the improvement comprising:
- a support frame mounted on the sweeper;
a lifting arm pivotably mounted at one end thereof to the upper end of said support frame;
a fork carried at the other end of the lifting arm, the fork pivotably mounting said hopper;
arm-pivoting and hopper-tilting means mounted on the support frame, the lifting arm and the fork, for pivoting said lifting arm to thereby raise said hopper and maintain said hopper in an upright state during sweeping and lifting respectively, and for tilting the hopper from the upright state to thereby empty the hopper after the lifting arm has been raised to a predetermined pivoted position.
- a support frame mounted on the sweeper;
- 2. In a mechanical sweeper comprising a roller brush arranged to throw rubbish forwardly of the sweeper, a hopper to receive rubbish from the brush mounted on lifting means pivotably mounted on the upper front end of the sweeper to pivotably move the hopper up and down for emptying same in a raised position, suction means, and a filter interposed between said hopper and said suction means, the improvement consisting in that the lifting means comprises a lifting arm pivotably mounted at one end to a support frame on said sweeper, a fork carried at the other end of said lifting arm, the fork pivotably mounting said hopper, and a first actuator means for pivotably moving said lifting arm, and the improvement further consisting of hopper-tilting means (1) for holding the bottom of said hopper parallel to the ground when the hopper is in a rubbish-receiving position during sweeping, and during the lifting of the hopper to a pivoted position for dumping, and (2) for tilting said hopper thereby to empty the hopper when said lifting arm is in any pivoted position.
Specification