US 2194916 A
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Description (OCR text may contain errors)
March 26, 1940. E. a. SOMERS BRUSH Filed May 19, 1958 Patented Mar. 26, 1940 PATENT OFFlCE BRUSH Eiward B. Somers, Darby," Pa.
Application May 19, 1938, Serial No. 208,872
My invention relates to brushes. The widest use of the brushes of the present invention is expected to be for cleaning type of typewriters and the like.
A purpose of the invention is to provide a brush having a spirally progressing cotton or other absorbent applicator mounted upon a wire handle.
A further purpose is to provide a brush having spirally wound intertwined rows of bristles and cotton or other suitable absorbent material.
A further purpose is to provide a brush having spirals of bristles and absorbent material, intertwined, the bristles forming facings for axial walls of the absorbent material.
Further purposes will appear in the specification and in the claims.
In the drawing I have preferred to illustrate one form only of my invention, selecting a form which is eflicient and inexpensive and which well illustrates the invention.
Figure 1 is a side elevation of my brush and its bottle closure can support.
Figure 2 is a section of the spiral oi bristles taken upon line 22 of Figure 1, the section being intended to follow the spiral.
Figure 3 is a section upon the line 3-3 of Figure 1, similar to Figure 2 but showing a row of cotton.
Figures 4 and 5 are side elevations showing, one, the brisltes only, and the other, the absorbent material only of the two used in my invention.
Figure 6 illustrates my brush with a slight modification of the arm.
Heretofore brushes for use to clean the type or platens of typewriters, adding machines and similar mechanisms have provided spiraled generally continuous stiff bristles and separate applicators to be used in conjunction with some cleaning agent. This has not proven wholly satisfactory because it has been necessary to use the applicator and bristles separately or to have a non-uniform and discontinuous operation.
The present brush is rigid with a bottle closure. It has alternate helical rows of cotton, or other suitable absorbent material, and hard bristles facing both axial sides of the cotton. The cleaning fluid is thus applied nearly simultaneously with the brushing, producing a most satisfactory result.
In the drawing, III is a bottle closure cap' of any suitable design or material supporting a twisted wire handle I I, within a boss l2, integral with the cap.
The wire handle ll comprises two strands of wire I3 and i4 twisted about each other and at the lower end [5 gripping a cleaning brush I6.
The cleaning brush is made up of bristles l1 6 and absorbent material i8, shown and described in this instance as soft cotton threads.
In the formation of the brush a wire i3 is placed in'a suitable die (not shown), and layers, one of bristles and the other of cotton thread, 1 are ,laid across it. A second wire I4 is then placed above the layers and the two wires are twisted about each other. The cotton threads and bristles are thus formed in a helical brush in which the stiffness of the bristles causes them to form facings I9 and 20 for the opposite axial helical surfaces of the spiral l8 of cotton. The groove or gutter between is thus also bounded or limited by walls i9 and 20 of bristle. Conveniently the two wires described above are shown in the drawing as one wire bent back upon itself.
The twisting operation also forms the handle.
The cleaning brush can be made with the spiral rib of bristles and cotton threads close together or spaced at any suitable distance apart by the 25 control of the quantity or volume of cotton and of bristles and the number of twists per inch of lineal dimension of the brush length.
Figures 4 and 5, elements of my brush, Figure 4 showing it as it would exist if bristles only were 80 used, the spiral space or gutter between the spiraled bristles being the gutter oi the finished brush. Figure 5 shows the'wlnding of the cotton strands only. It fills up the space 2| between the helical turns of bristle so that both axial 35 faces of the cotton are covered by bristles. Considering the combined cotton and bristle helix as an advancing helical rib, the individual bristles pass through betweenthe wires and extend one end 22 of each bristle to form part of the facing 40 of what, with respect to the direction 24 of rib advance, maybe considered the back wall 23 of one helical rib and the other end 25 of each bristle to form part of the front wall 26 of an adjoining helical turn 21 of .the rib.
For ease of application to some difflcult type platens .I have formed the handle of my brush with an offset 28, which is seen in Figure 6.
The cotton threads will absorb and carry suflicient cleaning fluid to the type, and the brush, 50 being of stifl bristles, will immediately come into contact with the type after the cleaning fluid has been applied, and before it can vaporize.
In both-directions of longitudinal brush movement each spiral turn of my brush presents to ll type or to other parts to be cleaned, first a relatively dry rim of bristle, then the intermediate cotton which carries the solvent cleaning liquid and, finally, a rim of bristles. And in each direction of movement the final rim of bristles is free to yield into the spiral groove or gutter space 29 and to discharge into this spiral groove the dirt which it has removed.
It will be evident that both the bristles and the cotton threads pass through between the twisted wires to form opposite sides of coaxial grooves, each having a diiferent one of the wires at its bottom. The one groove which shows in the drawing has facings of bristle on opposite sides, and the other, an intervening spiral groove" with facings of cotton. Because of the stiffness of the bristles they maintain their positions seen, form facings for the cotton, and provide the open groove seen in the drawing, whereas because of its tendency to spread the cotton on the two sides of what would otherwise show as a coaxial intervening spiral groove in the brush fills upthe groove which it faces and gives the appearance of a full thickness or rib of cotton instead of edgings of cotton. The second groove" with a wire at its bottom, therefore, does not show as a groove at all but shows as the cotton core between bristles in the draw- The brush shows one wire only of the pair of twisted wires, at the bottom of the one groove only which appears. This groove lies between the facings of bristle and the other wire of the twisted pair is hidden by the mass effect of the cotton.
In view of my invention and disclosure variations and modifications to meet individual whim or particular need will doubtless become evident to others skilled in the art to obtain all or part of the benefits of my invention without copying the structure shown, and I, therefore, claim all such in so far as they fall within the reasonable spirit and scope of my invention.
Having thus described my invention what I claim as new and desire to secure by Letters Patent is:
1. In a brush, a twisted wire handle, and alternate rows of bristles and absorbent material held by the wires, the bristles forming supporting and protecting walls maintaining both faces of each row of absorbent material and each such faced row being spaced from the next faced row.
2. In a brush for cleaning type or the like, layers of bristles and absorbent material, and twisted wires holding the bristles and absorbent material, forming helical rows of bristles and absorbent material, the same bristles forming facings and supports for adjacent faces of adjacent rows of absorbent material.
3. A twisted wire brush for cleaning typewriters or the like comprising a twisted pair of wires, a continuous spiral of cotton threads and of bristles held together by the wires, opposite ends of the same bristles forming two spiral rows covering respectively the two oppositely directed adjacent axial faces of adjoining turns of the cotton spiral and separated, one turn of the spiral from the next by one of the wires, thus providing a bristle faced cotton spiral with a clearing space in between the turns.
ELWARD B. SOMERS.