US3864779A

US3864779A - Oscillating brush

Info

Publication number: US3864779A
Application number: US374313A
Authority: US
Inventors: Alfred R Thomas
Original assignee: Individual
Current assignee: Individual
Priority date: 1973-06-28
Filing date: 1973-06-28
Publication date: 1975-02-11
Anticipated expiration: 1992-02-11

Abstract

An oscillating brush device comprising a pair of racks which are driven in reciprocation as is a gear mounted on the brush shaft. The racks are slotted at one end and receive eccentric cams mounted on a worm wheel to impart the desired reciprocation of the brush.

Description

0 United States Patent 1 1 1111 9 Thomas Feb. 11, 1975 OSCILLATING BRUSH 2,196,667 4/1940 Moseley 1s/22 R 3,046,584 7 1962 W f [761 Inventor: Amed 309 Lafayette 3 281,878 11/1966 15/22 R Ave., Brooklyn, NY. 11238 i [22] Filed: June 1973 Primary Examiner-Edward L. Roberts [21] Appl. No.: 374,313

52 us. (:1 15/22 R, 74/78, 310/83 1571 ABSTRACT [51] Int. Cl A46b 13/02 An Oscillatin I g brush devlce compr1s1ng a pair of racks [58] held of 22361 3 3 55 which are driven in reciprocation as is a gear mounted l on the brush shaft. The racks are slotted at one end 56 R f d and receive eccentric cams mounted on a worm wheel 1 e erences to impart the desired reciprocation of the brush.

UNITED STATES PATENTS 1,007,090 10/1911 Gaynor 15/26 1 Claim, 4 Drawing Figures OSCILLATING BRUSH This invention relates to motor driven tools and, in particular, to rotative brushes used for example, to scour and clean pots and pans.

The invention contemplates an oscillating brush the reciprocating motion of which provides enhanced efficiency in dislodging particles on pots and pans which have been stuck to the cooking surfaces under high temperatures and in some cases pressures. The present oscillating brush has proven highly efficient in comparison with the ordinary rotary brush and hand scouring.

One object of the invention is to provide an improved motor-driven brush device.

Other objects and advantages of the invention may be appreciated on reading the following description of an embodiment thereof which is taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a perspective view of the invention;

FIG. 2 is an enlarged side view with parts broken away to show the arrangement of the drive means;

FIG. 3 is a horizontal sectional view showing the worm drive and reciprocating means and taken on the line 3-3 of FIG. 2; and

FIG. 4 is a cross-sectional view and taken on the line 44 of FIG. 2.

Referring to the drawings and, more particularly to FIG. 1, there is shown a pot and pan cleaning brush comprising a handle 12, a housing 14 for the drive means employed to oscillate brush 16. The handle 12, which is hollow, is provided with a motor 18 powered by battery 20 and actuated by the switch 22.

A worm screw 24 mounted on the armature shaft of motor 18 is in driving engagement with a worm wheel 26 on shaft 28, which in turn is supported by

bearing brackets

30 and 32 fixed in the handle 12.

Eccentrically mounted on opposite sides of the worm wheel 26 are

cams

34 and 36. A pair of symetrical reciprocating

members

38 and 40 having

cam follower slots

42 and 44 engaging the

eccentric cams

34 and 36,

respectively, which are in opposite phase to impart reciprocal motion to the members. The recirpocating

members

38 and 40 are provided with

racks

46 and 48 on the inner edges of their free ends. Pinion 50 mounted on shaft 52 engages on opposite sides thereof the

racks

46 and 48. The arrangement is such that the pinion 50 is oscillated in a strain free manner about its axis by the simultaneous push-pull action of the

racks

46 and 48.

As best seen in FIG. 4, the

members

38 and 40, with their

racks

46 and 48, are guided and maintained in engagement with the pinion 50 by a platform 54 having

rails

56 and 58. A top plate 60 is supported on

posts

62 and 64 fixed to platform 54 to guide the top edges of

members

38 and 40.

The pinion shaft 52 extends below the housing I4 and terminates in a retaining socket 66 to accommodate a half-round stud 68 for driving the brush 16 in oscillation being held therein by C-spring 70, thus permitting its replacement or the use of other types of brushes.

Various modifications of the invention may be appreciated by persons skilled in the art without departing from the scope and principle of the invention as defined in the appended claims.

What is claimed is:

1. An oscillating brush device comprising a housing, a pinion shaft mounted in said housing and extending therethrough, a brush secured to the pinion shaft outside said housing, a pinion mounted on the shaft within the housing, a pair of racks engaging said pinion respectively on opposing sides thereof, a motor mounted in said housing and having a rotary drive shaft, a worm screw in driven connection with said shaft, a worm wheel engaging said worm screw, a cam mounted on each face of said worm wheel in opposite phase, each of said racks being operatively connected to one of said cams whereby oscillatory motion is imparted to said brush upon rotation of said shaft.