Патент USA US2129306код для вставки
Sept. 6, 1938. G. T~ MV1-TON 2,129,306 DENTURE BRUSH Filed Jan. 3, 1958 :Fi A jïlve‘rfl’or ` Ghlenn Mirror; ATTY. Patented Sept. 6l, 1938 I 2,129,306 UNITED STATES PATENT OFFICE 2,129,306 DENTURE BRUSH ì Glenn T. Mitton, Toronto, Ontario, Canada Application January v3, 1938, Serial No. 182,995 1 Claim. (Cl. 15-167) The invention relates to a brush for cleaning dentures of the kind comprising a handle formed of an elongated base and a curved head upstand ing from the top side thereof, said head having 5 a semi-circular peripheral bristle carrying sur face, and bristles outwardly projecting from said peripheral surface terminating in a substantially curved brushing surface in the plane of the han dle, and has for its object to produce a brush of 10 this kind capable of manipulation in a circular sweeping or brushing motion by holding it with the thumb at one side centrally of the bristling and the ñngers at the other side in order to obtain a secure purchase, particularly for using 15 the brush by a wrist movement for brushing, in ' I1 receptive to the lingers and merged into the 5 adjoining recess, as clearly depicted in the drawing. The bristling is of a V-formation in cross sec tion and the tufts I8 are lodged in holes I9 in the head in a well known manner, which holes 10 are arranged in rows, there preferably being four of such rows in side by side relation throughout the length of the nat semi-annular face I 4 afore said. The holes have angular axes so that the tufts incline inwardly and interfit at their tip 15 particular, recesses and other grooved surfaces portions thus producing the V-formation. The of upper and lower dentures difficult of access. series of holes of one row are staggered or lon Having described the nature and object of the invention, reference is now made to the accom 20 panying drawing in which Figure 1 is a perspective view of the invention illustrating its use in brushing interproXimal embrasures. Figure 2 is a side elevation thereof showing it 25 as employed in brushing the top grooved por tion of an upper denture. Figure 3 is an end view of the brush depicted as applied to the groove curvature of a lower 30 Each side of the head is supplied with a cen tral depression or recess at I6 receptive to the ball of the thumb, and each side of the -grip or base is supplied with a lengthwise groove as at denture. Figure 4 is a top plan view in which several tufts are omitted in order to show the forma tion of the holes in the bristle carrying surface. gitudinally offset with respect of the series of holes of another row by which a compact inter locking of the tips of the converging tufts is 20 effected that enables them to brace one another and produce a continuous semicircular brushing or working surface in the plane of the handle. The interspacial openings furnished by the di vergent root portions or inner ends of the tufts 25 provide for ready removal of accumulated for eign matter by flushing and also for free circu lation of air through the bristles in drying, the brush being stood on- its flat bottom for drying purposes. 30 It will be observed that the ends of the grip or base are reduced on converging lines from a Figure 5 is a cross section taken on line 5-5 point in the vicinity of the respective end of the of Figure 4. Abristle carrying face in order that the side faces 3.5 Figure 6 is a bottom plan view of the base. of the ends may be substantially flush with the Like numerals of reference denote similar parts sides of the bristles and therefore do not inter in each figure of the drawing. fere with the rotative manipulation of the brush In the preferred construction of the invention in cleansing a denture. herein disclosed, the reference numeral 1 gen From the preceding description, it will be mani 40 erally denotes the bristling which is composed fest that this invention provides a brush structure of tufts radially extending from a head 8 of a particularly advantageous for dentures and one handle 9 having an elongated grip or base I0. by which surfaces of a flat or grooved nature may The head and the grip or base are unitary as shown and provide opposite sides II and I2 with be thoroughly brushed. As has already been re 45 a fiat bottom I3 at right angles thereto. The counted, the brush is held by placing the ball of handle may be constructed of suitable material the thumb in the recess of one side of the head according to circumstances of manufacture, and and the lingers in the groove along the opposite side of the grip or base. A rotative movement the bristling may and will be of approved sub may be imparted to the brush by a wrist move stance. ment and/or by a finger action using the thumb 50 The head is semicircular in shape and prefer ably has a flat peripheral face I4 constituting as the centre of angular motion. the bristle carrying surface, which head upstands What I claim is: from the top of the grip or base IIJ and is dis A denture brush composed of a handle formed posed medially of the length of the same with 'of a flattened unitary head and base providing 55 its rounded face short of the ends I5. opposite sides and a ñat bottom, said head being 35 40 50 55 2 ` 2,129,306 semi-circular in shape to provide a semi-circular bristle carrying surface, said base intercepting the curvature of the head in lengthwise direc tion with its ends projecting outwardly of the ends of the curvature, each flattened side of the head having a central thumb recess merged into a finger groove formed in the same side of the base lengthwise thereof, and bristles radially pro jecting from said semi-circular surface, said bris tles being of such length as to produce a concen trically curved working surface. GLENN T. MITTON.