US 4,319,378 AGranted

Chimney cleaner

OwnerSamuel J. Bowman, William F. Bowmaninventors

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Abstract

A chimney cleaner of universal application and especially suitable for cleaning heavy wood resin residue is disclosed. An A-frame assembly capable of expansion and contraction to accommodate various chimney sizes is held together by pivot connections. The manual reciprocation of the cleaner by a user through a rod which forms the cross bar of the A-frame produces a longitudinal reciprocation of the A-frame. A right angled brush may be removably mounted on the A-frame along its top and fits into a chimney outwardly from a corner. The legs of the A-frame end in wheels which ride up and down the chimney corner opposite the brush. The chimney cleaner's overall dimensions may be increased or decreased by applying a torque to the rod which, through a threaded connection with a leg, will cause the legs to spread or contract.

Claims8

Dependent claims

A chimney cleaner intended to receive a brush removably attached thereto comprising:

(a) a pair of legs spaced and pivotally held apart at their one end by an elongated brush retaining bracket and at their other end each adapted to receive a wheel;
(b) a rod parallel to said bracket passing through each of said legs;
(c) pivotal journal bearings within each of said rod-to-leg intersections to receive said rod, said rod, two legs and bracket forming an A-frame, said bracket-to-leg and rod-to-leg pivot points thereby allowing a parallel longitudinal reciprocation of the brush retaining bracket to be produced when a longitudinal reciprocation by a manual upward and downward thrust is applied to said rod within a chimney;
and,
(d) threads located on said rod segment which passes through one of said journal bearings and also mating threads within said corresponding leg's journal bearing whereby a torque applied to said rod changes the width between said legs and therefore said chimney cleaner's overall diameter so that a brush mounted on said brush retaining bracket may be tensioned against the chimney wall to be cleaned.

2 more elements

Dependencies are inferred from the claim text.