US3535728A - Handle for a rotary brush - Google Patents
Handle for a rotary brush Download PDFInfo
- Publication number
- US3535728A US3535728A US734658A US3535728DA US3535728A US 3535728 A US3535728 A US 3535728A US 734658 A US734658 A US 734658A US 3535728D A US3535728D A US 3535728DA US 3535728 A US3535728 A US 3535728A
- Authority
- US
- United States
- Prior art keywords
- handle
- brush
- bosses
- cam
- brush back
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25G—HANDLES FOR HAND IMPLEMENTS
- B25G3/00—Attaching handles to the implements
Definitions
- the brush back is so close to the adjacent surface (splash or base plate) of the floor care machine that there is not enough room for ones fingers to get between the brush and adjacent surface or plate for a good grip on the brush.
- the brushes may be wet and slippery thus increasing the difficulty.
- any brush latching arrangement will accumulate dirt, and become corroded in use so that in a short time the latch fails to operate with ease and the brush must be pried off with an instrument of some kind since no tool is generally provided for this purpose.
- An object of the invention therefore is to provide an improved rotary brush for a floor care machine whereby the brush is readily detached from the associated driving spindle.
- a more particular object of the invention is to provide a handle for a rotary brush to facilitate removal of the brush from a driving spindle.
- FIG. 1 is a somewhat diagrammatic perspective view of a rotary brush according to the invention.
- FIG. 2 is a perspective view of the handle per se shown in FIG. 1.
- FIG. 3 is a schematic plan view of the bosses shown in FIG. 1 for connecting the handle to the brush.
- FIG. 4 is a perspective view of a brush according to a second embodiment of the invention.
- FIG. 5 is a schematic cross-sectional view illustrating the operation of brush handle according to the embodiment of FIG. 4.
- FIG. 6 is a partial cross-sectional view of a rotary brush and handle according to a third embodiment of the invention.
- FIG. 7 is a -view taken generally on line 7-7 of FIG. 6.
- FIG. 8 is a partial plan view according to FIG. 6 with the handle in its retracted position.
- FIG. 1 a rotary brush generally designated 10 is shown having a brush back 11 in which the bristles 12 are held in any suitable manner.
- a foam generating sponge 13 is also shown in FIG. 1 which indicates that the brush 10 is adapted for use in shampooing rugs.
- the handle 16 would be applied to any rotary brush i.e. scrubbing and buffing brush, etc.
- the brush back 11, constituted of any suitable material, is preferably molded with a pair of bosses 14 integral therewith. The bosses 14 project outwardly in the direction of the bristles 12 and the opposed surfaces of the bosses may be parallel (not shown).
- the handle 16 (FIG.
- the adjacent or facing surfaces of the bosses 14 are configured to provide camming surfaces 15 which normally and positively hold the handle 16 in a retracted position.
- the camming surfaces 15 may cause the handle 16 to always return to the position shown in FIG. 1, or to either this position or a second position just opposite to that shown in FIG. 1, as will be explained fully in connection with FIG. 3.
- the handle 16 could consist of a single loop of twine (not shown) attached to the brush back (exclusive of the bosses 14) or a U-shaped wire (not shown) which is journaled in openings 17 of bosses 14.
- a web type handle 16 is preferred because ones finger may be caught by a loop of twine or Wire if a machine, from which a brush is being removed, is accidentally turned on and a painful injury can result.
- the web 18 is made resilient or pliable so that if a machine from which a brush is being removed is accidentally turned on the handle 16 will distort and the handle shafts 16a (FIG.
- the handle 16 shown in FIG. 1 will always return to the position shown when the camming surfaces 15 of the bosses 14 converge as diagrammatically indicated in FIG. 3a.
- the handle 16 in an upright position is released it will automatically pivot in the direction of arrow A to overcome the unstable condition imposed by distortion or stresses on the handle 16 due to the camming surfaces 15 of the bosses 14 when the handle is in an upright position.
- the camming surfaces 15a of bosses 14a are converging-diverging surfaces the handle 16 will move from an upright position either left or right, as indicated by arrows B, to its normal retracted position.
- the brush generally designated 110 comprises a brush back 111 having a ring of bristles 112.
- the brush back 111 is provided with a pair of slots 120 which extend completely through the brush back.
- the handle 116 having lever arms 121 received in the slots 120 (FIG. 5) is pivotally connected to the brush back in known manner, for example by pins 125 as indicated in FIG. 4.
- the lever arms 121 engage the driving hub or spindle or the base plate 130- of the floor care machine thereby lifting the brush axially of the associated driving spindle for removal.
- the handle 116 is moved into its retracted position by engagement of the lever arms 121 with the member 130 so that the handle 116 is retracted and unable to engage the floor to be treated.
- the handle 216 is pivotally attached to the brush back 211 by means of a pair of bosses 214, connected with the brush back, and having apertures 217 for receiving the handle shafts 216a.
- the facing surfaces of the bosses 214 are not configured for camming the handle into a retracted position as in the embodiment of FIG. 1.
- the handle is provided with a cam 220 which projects radially outwardly from the axis of rotation of the associated shaft 216a.
- the cam 220 When the handle is elevated to a vertical position for brush removal the cam 220 is spaced from the associated bosses 214 so that a lever arm is provided between the fulcrum 221 and the contact point or line 222 between the cam and the brush back, at best illustrated in FIG. 6.
- the handle 216 When the handle 216 is in its vertical position the stresses imposed on the shaft 216a and the web 218 of the handle by the bosses 214 and cam 220, create an unstable condition and the handle when released will snap into its stable condition wherein it is retracted as shown in FIG. 8.
- the general V shape of the cam 220 as best illustrated in FIG. 7, is preferred however it should be noted that a V-shaped cam is not critical for obtaining an unstable condition of the handle in its upright position.
- the brush back is relieved at 223 (FIG. 6) to allow the outer ends of the shaft 216a to move away from the boss and thereby prevent binding of the shaft in the boss which could have an adverse effect of the retracting operation of the handle.
- cams 220 are preferred as shown in the drawing however, a single cam may be used as well.
- a rotatable brush for a floor treating machine comprising a brush back having a generally annular bristle pattern projecting from a major surface of said brush back, a pivotal handle member secured on said brush back within said annular pattern of bristles and means for automatically moving said handle from an upright position substantially normal with the brush back to a retracted position substantially parallel with the brush back.
- a rotatable brush according to claim 1 wherein said handle member consists of a sheet of resilient material whereby said handle is bendable transversely of its pivotal axis for removably connecting said handle with said brush back.
- a rotatable brush according to claim 1 wherein said handle comprises a web portion having a pair of oppositely projecting shafts and said means comprises a pair of opposed bosses projecting from said brush back, said bosses having apertures therein defining a pivotal axis for said handle member, said shafts being receivable in said apertures for pivotally connecting said handle and said brush back.
- a rotatable brush according to claim 3 wherein the opposed surfaces of said bosses are configured for defining camming surfaces, said camming surfaces engaging said handle member for urging said handle into a retracted position.
- a rotatable brush according to claim 1 wherein said means for moving said handle member comprises an eccentrically weighted handle for urging said handle into its retracted position when said brush is rotated in normal use thereof.
- a rotatable brush according to claim 1 wherein said handle member comprises a web portion having a pair of lever arms extending therefrom in a plane traversely of the pivotal axis of said handle, a pair of slots in said brush back for receiving said lever arms, said lever arms extending beyond said brush back when said handle is normal with said brush back for engaging said floor treating machine when said brush is attached thereto whereby said handle is pivoted to said retracted position.
- a rotatable brush according to claim 1 wherein said handle comprises a web portion having a pair of axial oppositely extending shafts, each said shaft having a free terminal end, and said means for moving said handle comprises a pair of bosses connected to said brush back, said bosses having apertures for receiving said. shafts and at least one cam on said handle projecting radially of the axis of rotation of said handle, said cam engaging said brush back in the upright position of said handle for creating an unstable condition whereby said handle is urged into its retracted position.
- a rotatable brush according to claim 7 wherein said cam on said handle projects from at least one said shaft, said cam being located on said shaft remote from the terminal end thereof whereby said cam is disposed between said bosses.
- a rotatable brush according to claim 8 wherein each said shaft has a cam projecting therefrom.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Brushes (AREA)
Description
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US73465868A | 1968-06-05 | 1968-06-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3535728A true US3535728A (en) | 1970-10-27 |
Family
ID=24952576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US734658A Expired - Lifetime US3535728A (en) | 1968-06-05 | 1968-06-05 | Handle for a rotary brush |
Country Status (2)
Country | Link |
---|---|
US (1) | US3535728A (en) |
FR (1) | FR2010146A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1865032A (en) * | 1929-02-06 | 1932-06-28 | William L Mcgee | Electric floor polishing machine |
GB531058A (en) * | 1938-08-16 | 1940-12-27 | Electrolux Ltd | Improvements in devices for securing attachments to disc-shaped carrier members |
US2972155A (en) * | 1958-11-20 | 1961-02-21 | Signal Mfg Co | Floor treating apparatus |
-
1968
- 1968-06-05 US US734658A patent/US3535728A/en not_active Expired - Lifetime
-
1969
- 1969-03-31 FR FR6909608A patent/FR2010146A1/fr not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1865032A (en) * | 1929-02-06 | 1932-06-28 | William L Mcgee | Electric floor polishing machine |
GB531058A (en) * | 1938-08-16 | 1940-12-27 | Electrolux Ltd | Improvements in devices for securing attachments to disc-shaped carrier members |
US2972155A (en) * | 1958-11-20 | 1961-02-21 | Signal Mfg Co | Floor treating apparatus |
Also Published As
Publication number | Publication date |
---|---|
FR2010146A1 (en) | 1970-02-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: FIRST NATIONAL BANK OF BOSTON, THE Free format text: SECURITY INTEREST;ASSIGNOR:EL ACQUISITION CORPORATION;REEL/FRAME:004923/0862 Effective date: 19871030 |
|
AS | Assignment |
Owner name: WELLS FARGO & CO. Free format text: SECURITY INTEREST;ASSIGNOR:ELECTROLUX CORPORATION A CORP. OF DE.;REEL/FRAME:005195/0287 Effective date: 19891024 Owner name: FIRST BOSTON SECURITIES CORP. Free format text: SECURITY INTEREST;ASSIGNOR:ELECTROLUX CORPORATION A CORP. OF DE.;REEL/FRAME:005195/0287 Effective date: 19891024 Owner name: FIRST BOSTON MEZZANINE INVESTMENT PARTNERSHIP - 9 Free format text: SECURITY INTEREST;ASSIGNOR:ELECTROLUX CORPORATION A CORP. OF DE.;REEL/FRAME:005195/0287 Effective date: 19891024 Owner name: WESRAY CAPITAL CORPORATION Free format text: SECURITY INTEREST;ASSIGNOR:ELECTROLUX CORPORATION A CORP. OF DE.;REEL/FRAME:005195/0287 Effective date: 19891024 Owner name: BANCBOSTON INVESTMENTS INC., Free format text: SECURITY INTEREST;ASSIGNOR:ELECTROLUX CORPORATION A CORP. OF DE.;REEL/FRAME:005195/0287 Effective date: 19891024 |
|
AS | Assignment |
Owner name: FIRST BOSTON SECURITIES CORP. Free format text: SECURITY INTEREST;ASSIGNOR:ELECTROLUX CORPORATION;REEL/FRAME:005206/0691 Effective date: 19891024 Owner name: BANCBOSTON INVESTMENTS INC. Free format text: SECURITY INTEREST;ASSIGNOR:ELECTROLUX CORPORATION;REEL/FRAME:005206/0691 Effective date: 19891024 Owner name: WELLS FARGO & CO. Free format text: SECURITY INTEREST;ASSIGNOR:ELECTROLUX CORPORATION;REEL/FRAME:005206/0691 Effective date: 19891024 Owner name: FIRST BOSTON MEZZANINE INVESTMENT PARTNERSHIP - 9 Free format text: SECURITY INTEREST;ASSIGNOR:ELECTROLUX CORPORATION;REEL/FRAME:005206/0691 Effective date: 19891024 Owner name: WESRAY CAPITAL CORPORATION Free format text: SECURITY INTEREST;ASSIGNOR:ELECTROLUX CORPORATION;REEL/FRAME:005206/0691 Effective date: 19891024 |
|
AS | Assignment |
Owner name: EL ACQUISITION CORPORATION, N/K/A ELECTROLUX CORP. Free format text: RELEASE OF SECURITY INTEREST;ASSIGNOR:BANKBOSTON NA;REEL/FRAME:009580/0655 Effective date: 19980831 |
|
AS | Assignment |
Owner name: ELECTROLUX CORPORATION, CONNECTICUT Free format text: RELEASE OF SECURITY INTEREST;ASSIGNORS:BANCBOSTON INVESTMENTS, INC.;WELLS FARGO & CO.;FIRST BOSTON MEZZANINE INVESTMENT PARTNERSHIP - 9;AND OTHERS;REEL/FRAME:009773/0310 Effective date: 19980831 |