US2112297A - Brush - Google Patents

Description

March 29, 1938. T. F. McGOLDRlCK 2,112,297

BRUSH Filed Dec '7, 1956 fizz/6727. 07" v Patented Mar. 29, 1938 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to improvements in brushes, and more particularly to the construction of a brush such as generally used for the cleaning of streets, etc.

It is an object of this invention to provide a brush of this character with detachable and interchangeable bristles, so that they may be replaced when worn. out or interchanged when. partially worn.

The advantages of such a brush are obvious,

and its uses are many. While originally contemplated for the use of the men employed to keep the streets of a city clean, it may be used in the same manner in cleaning sidewalks, hallways and oflices of buildings, gardens or other places where it is desired to brush surface dirt or debris into small piles before shoveling the pile into a receptacle for removal.

It has been found that the bristles in brushes customarily used for this purpose, and which are usually formed in parallel transverse rows, wear unevenly, that is, either the front or rear rows wear sooner than the intermediate rows according to the manner in which the operator holds the handle. Therefore, a brush which is provided with bristles formed in sections and detachably secured in the frame of the brush allows the interchange of partially worn bristles and increases the life of the brush at an expenditure only of the efiort to make the exchange.

With these and other objects in view, reference is made to the accompanying sheet of drawings Which illustrates a preferred form of this invention with the understanding that detail changes may be made without departing from the scope thereof, and with the understanding that the brush with the interchangeable and replaceable bristles, while preferable, may be replaced by a brush of the fixed bristle type without departing from the scope of this invention.

In the drawing:

Figure 1 is a view in side elevation of .this improved brush.

Figure 2 is an enlarged transverse sectional view of Figure 1 showing the manner in which the bristles are detachably held in the brush.

Figure 3 is a bottom plan view of Figure 1 before the bristles are inserted.

Figure 4 is a detail view in front elevation of a section of bristles.

In the embodiment of this invention as illustrated, the brush I is shown as a customary push broom type and is preferably constructed of a metallic casing having a flat rectangular base or back 2, closed at the front with two short sides for detachably mounting rows of bristles 3, arranged parallel to the long, closed front.

In this type of brush, the bristles are formed in narrow rectangular sections with the upper ends held together by glue or embedded in cement or other similar medium. The sections are of such length as to be receivable between the side closures 4 depending from the fiat back 2. The front section of bristles 3 is held in position against the front closure 5 depending from the flat back 2.

As many partitions 6 are provided parallel to the front closure 5 as there are sections of bristles to be employed. These partitions 6 are equally spaced apart from each other and the front closure 5 and their ends are secured in any desired manner to the depending side closure 4. The embedded ends of the section of bristles 3 are inserted to rest against the front closure 5 and each of the partitions 6 and secured thereto in that position by a series of adjustable follower plates 1 preferably mounted upon guides 8 passing freely through the partitions 6 and secured to each follower plate I, as shown in detail in Figure 2. When the brush sections are in place, the embedded ends are secured against the respective partitions 6 and front closure 5 by exerting pres- 25 sure upon the guides. 8, as by screws 9 freely mounted upon the outer follower plate threaded into the next adjacent fixed partition 6, or by any other desired means, so that the bristles 3 are rigidly held in position and yet may be de- 30 tached and removed for reversal or interchange with another section.

What I claim is:

The sweeping brush including a rectangular head with a handle attached at an. angle thereto 35 to push the head over the surface to be cleaned, said head closed at the top with depending integral front and sides and provided upon its underside with a plurality of equally spaced-apart transverse immovable partitions forming rectan- 40 gular pockets, a section of bristles having their upper longitudinal ends imbedded in a retaining medium received each transverse pocket, a rectangular follower plate in each transverse pocket adapted to engage the rear of each sec- 45 tion of bristles mounted upon a plurality of spaced-apart guides passing freely through said transverse partitions adapted to engage and force the follower plates to hold the sections of bristles against the front and each transverse partition 50 respectively, and means engaging the rear follower plate and the rear transverse partition adapted to apply force to the guides and follower plates to removably secure the bristles in place. 55

THOMAS F. MCGOLDRICK.

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