US2150842A - Motorized fountain-type tooth brush - Google Patents

Description

March 14, 1939. T. B. OLIVER MOTORIZED FOUNTAIN-TYPE TOOTH BRUSH Filed Dec. 10, 1936 4 Sheets-Sheet l 6 lnven ior Z'fimwm 27. O/d/W A imrpeys March 14, 1939. OLIVER MOTORIZED FOUNTAIN-TYPE TOOTH BRUSH Filed Dec. 10, 195E 4 Sheets-Sheet 2 14 I Zfiz/r/mm 3. 0/478 By 94mm A iiomeus MOTORIZED FOUNTAIN-TYPE TOOTH BRUSH Filed Dec. 10,1936 4 Sheets-Sheet s f.7 I Inventor J4 H/f/ TzmmaaflO/nkar A 401 2:". [a A Attorneys March 14, 1939. B OLIVER I MOTORIZED FOUNTAIN-TYPE TOOTH BRUSH 4 Sheets-Sheet 4 Filed Dec. 10, 1956 Inventor fiu/wmvfi. U/fVer Attorneys Patented Mar. 14, 1939 2,150,842

UNITED STATES PATENT OFFICE MOTORIZED FOUNTAIN-TYPE TOOTH BRUSH Thurman Boyce Oliver, Athens, Ga.

Application December 10, 1936, Serial No. 115,222

1 Claim. (Cl.'15--24) The present invention relates to so-called ronumerals are employed to designate like parts tary tooth brushes and has reference to an electhroughout the views:

tric motor operated apparatus which, while Figure 1 is an elevational view of the complete usable in dental parlors and similar quarters, is structural assemblage constructed in accordance essentially adapted for domestic or home use. with my own inventive idea. 5

In accordance with the principles of my in- Figure 2 is a top plan view of the arrangement vention I have perfected a comparatively simple, depicted in Figure 1. motorized structure characterized by a detach- Figure 3 is a view partly in section and partly able fountain brush unit cooperable with means in elevation detailing the brush head construcfor supplying a cleaning fluid, under pressure, tion and shaft propulsion means. 10 to the bristle brushes for effective cleansing, Figure 4 is a bottom plan view of the brush additional means being provided for automaticalunit adapter coupling or fitting. ly disposing of extraneous matter, whereby to Figure 5 is an end view of the handle forming accomplish the desired results in an eflicient and portion of the brush head unit.

aptly suitable manner. Figure 6 is a detail section taken on the plane 15 One feature and advantage is predicated upon of the line 66 of Figure 1. the adoption and use of a detachable power op- Figure '7 is a fragmentary bottom plan View erated brush unit having a properly constructed looking upwardly beneath the motor and cylinder shield-forming head apertured to deliver the assembly disclosing the transmission gearing.

cleansing fluid to a pair of parallel oppositely Figure 8 is a view partly in section and partly 2o rotating bristle brushes thus providing a duin elevation showing the electric motor conplex fountain brush assemblage susceptible of trolled piston and cylinder means.

adequately and simultaneously cleaning and Figure 9 is a somewhat enlarged bottom plan brushing the surfaces of the upper and lower view of the ovate fountain head shield and aperrows of teeth at the same time. tured disposal tube, with the bristle brushes re- 25 Another feature of the invention is devoted to moved for clearness of illustration. the adoption and use of the aforementioned mo- Referring now to the drawings by distinguishtor-driven duplex brush assemblage having asing reference numerals attention is first invited sociated therewith an antiseptic solution containto the general assemblage disclosed in Figures 1 ing jar, cylinder and piston means, and approand 2. Here the electric motor is denoted by the 0 priately coordinated delivery conduits to satisnumeral I 0 and this is of any suitable type adaptfactorily deliver the antiseptic solution to the able for the purpose. It is attached to an aprotating brushes to insure a constant supply for propriate hanger bracket ll forming a part of effective results. the substantially L-shaped supporting fixture I2 A further feature of the invention has referconnectible with the wall or other relatively sta-- 35 ence to the provision of a single motor to drive tionary Supp surfacee nu 13 the rotatable brushes, to feed the antiseptic sodesignates a holding strap to accommodate and lution to the brushes and to also operate the maintain in position a glass jar l4 having a repiston and cylinder means, a part of which conmovable screw-cap l5 and constituting a reserstitutes a dependable arrangement for creating voir for a suitable antiseptic solut o appropriate suction within the vicinity of the bristle brushes for cleaning the human teeth- The motor Shaft to carry away waste matter and thus promot drives a pinion I6 in mesh with a power take-off rename and sanitary cleaning and speed reducing gear I! which operates the Briefly then, the preferred embodiment of the fl m Shaft On this Shaft r invention is regarded as an innovation and novel 15 a plmor} whlch qrlves gear i contribution to the trade and art in that it is f 2 g? 2}; characterized by a compact and convenient coneccen rm gear opera es e connectmg 10d which, in turn, simultaneousl reci roc sclidatlon of motor driven brushes, chemical sosociated pistons 23 and 24 pistgns g fi 5O lution supply means therefor, and simultanBO to advantage in Figure 8 include heads 25 and 28 6 operable waste disposal means as described. mounted f r reciprocation in companion 11 other features and advantages will become ders 21 and 2 forming complemental parts of m readily pparent from the following dethe piston and cylinder assembly units unitarily scription and drawings. denoted by the numeral 29. The piston heads In the accompanying drawings wherein like are provided with suitable flap valves 30 having 55' the desired fluid check control action. A supply hose 3| as shown in Figure l supplies fluid into the cylinder 21, said hose being provided with a posite end is the discharge or disposal pipe 35 which is designed for connection with a suitable part of the house sewage system.

The numeral 36 designates an appropriate" flexible casing to accommodate the flexible power propulsion shaft l8 and the associated individual hoses 33and 34. 7

Attention is now invited to Figure 3 showing the adapter fitting or coupling 31 for the fountain brush unit 38. The coupling is made to accommodate the handle portion39 of said unit 38. It is provided with suitable keeper notches 40 to receive diametrically opposite keeper lugs 41 provided on the adjacent. or complemental end of the handle. The handle, therefore, telescopes into the coupling in the manner shown. It will be noticed that a bearing member 42 is arranged in the coupling to accommodate an idling or stub shaft 43 carrying agear 44. This is in constant mesh with a companion gear 45 on the end of the flexible drive shaft I8. These gears 44 and 45 are provided with polygonal sockets 46 (Fig. 4) to accommodate the correspondingly shaped or squared ends 41 (Fig. on the brush operatingshafts 48. The shafts 48 are mounted for rotation in bearings in the brush handle and theextended ends thereof are provided with bristle brushes distinguished by the numerals 49 and 50. These brushes turn in opposite directions and are adapted to simul taneously clean the surfaces of the upper and lower rows of teeth. The brushes 49 and 50 cooperate with the ovateor shield-shaped guard 5| forming an integral extension of the handle 39. The handle is provided with bores 52 which extend'into the marginal portions of the guard 5| as indicated at the point 53 to provide suitable scopically into said coupling 31. Thus the pipe ends 55 project into the bores or passages 52 While the key-forming ends 41 of the shafts 48 fit into the operating sockets 46in the meshing gears, 44 and 45. The numeral 58 designates a suction pipe'connected with the disposal suction hose 34 whichpipe 56 is connected with 'a longitudinal passage also formed in the brush handle 39, said passage terminating in an extending apertured centrally disposed intake :nozzle 51 located'between thebrushes as shown to advantage in Figure 9 and also:in Figurefi. This is the waste matter disposal nozzle, as is evident.

That is to say its function is to carry away extraneous matter and excess saliva to facilitate the desired complete operation.

In operation it is understood that the motor operates the flexible shaft I8 and this, in turn,

rotates the complemental gears 44 and 45 as seen in Figure 3. This action turns the brush shafts 48 and, in turn, drives the brushes 49 and 50 in opposite directions. At the same time the motor actuates the piston head 25 to supply antiseptic solution from the jar I4 to the brushes by way of the piston and cylinder arrangement, plus the delivery pipes 55 and passages 52 and ports 54 as disclosed in Figure 3. While this is being accomplished the cylinder 28 and piston 26 come into play in producing suction through the line 34. This draws in waste matter through the nozzle 51 and carries it into the cylinder 28 where it is discharged by way of the check valve 30 on the proper stroke, and is forced out through the discharge pipe 35. As before indicated this pipe 35 is connected with a suitable source of deposit such as the house sewage system. It follows that the provision of the duplex motor driven brushes, properly guarded, and the antiseptic supply, and disposal means for waste material, provides anideal tooth brush construction for individual home and-other uses. It is understood that it is not so much the place in which the structureis used as it is the construction of the apparatus itself, which forms the novelt upon which newness is predicated.

Possessed of features, ofrefinement and improvement, and characterized by a consolidated arrangement reflecting compactness and convenience,it is believed that I have evolved and produced a structure which maybe unqualifiedly endorsed by the trade asperforming the desired result in an effective and reliable manner.

It is thought that thedescription taken in connection with the drawings ,will enable a clear understanding of the. invention to be. had;

Therefore, a more lengthy description is thought unnecessary.

While the preferred embodiment of the inventionhas been shown and described, it is to be understoodthat minor changes coming within the field of invention claimed may be resorted to if desired; I r I What, is claimed is:

As a component part of a structural assemblage of the class described, a tooth brush unit including a handle terminating at one end in a shieldshaped guard and fountain forming head, said head being provided with apertured fluid delivery passages, the handle having passages cooperati ng therewith, an'additional passage in said handle to carry off waste material, an apertured nozzle connected with said additional passage and underlying said head, apair of shafts mounted for rotation in the handle and having end portions projecting beneaththe head on opposite sides of said nozzle, and brush bristles carried by said projecting shaft-ends in. the manner and for the purposes described.

r THURMAN B. OLIVER.

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