Патент USA US2112311код для вставки
March 29, 1938. 2,112,311 D. G. SMELLIE‘ SUCTION CLEANER 3 Sheets-Sheetl Filed May‘ 28, 1930 _ ?z/emizw/ -Donald 6’. 5277677232. @744’? March 29, 1938. D. G. SMELLIE SUCTION CLEANER Filed May 28, 1950 2,1 12,311 3 Sheets-Sheet 3 5 jiz?erz??' Donald 6? SmeYZZé. W566 . 1%? 2,112,311 . Patented Marf29, 1938 UNITED STATES‘ PATENT OFFICE 2,112,311 SUCTION CLEANER Donald G. Smellie, Canton, Ohio, asslgnor to The Hoover Company, North Canton, Ohio, a cor poration of Ohio Application May 28, 1930, Serial No. 456,388 ' - 16 Claims. (0]. 15--13) The present invention relates to suction cleaners and particularly to improvements in suc the surface covering; and in which the point of agitation is coincident with the point of air clean tion cleaner agitating means. ing effectiveness. i ‘ The- advantages of the suction cleaner whic It is an object of the present invention, there-, CW effects positive agitation over the suction, cleaner fore, to provide a suction cleaner in which a more which relies solely upon air to do the cleaning are 'emcient surface covering agitating means is pro well de?ned. In the straight-air machine as the vided. It is a still further object of the present machine ~passes over the‘ covering undergoing invention to provide a cleaner in which the agi cleaning the lips of the nozzle contact said cover tation of the surface covering occurs at the point 10 ing and the air drawn into said nozzle by action at which the cleaning air is effective. It is a still of the motor-drivenv fan removes the dirt or further object of the invention to provide a sue foreign matter therefrom at the point of contact. tion cleaner in which positive means are incorpo rated which insure an open pathway for the cleaning air into the surface covering. Other and The cleaning air, however, in the absence ,of posi tive assistance cannot penetrate into the body‘ of‘ the surface covering and consequently has no op portunity to remove the dirt which is deeply em bedded therein but is able to remove only the loosely embedded particles at or near the top of said covering. In the machine embodying positive 70 agitation the surface covering is vibrated and ?exed, the foreign particles embedded in the sur face covering are thereby loosened and the clean ing air is better able to remove the same. In the ordinary cleaner embodying positive agitation to the drawings annexed thereto. ' Referring now to the drawings: ' Fig. 1 is a side view of a suction cleaner con structed in accordance with the present inven tion with certain parts broken away upon the 20 line I—l of Fig. 3, to show the power transmission mechanism.' . ' . Fig. 2 is a bottom view of the cleaner disclosed however no means are incorporated which posi in Fig. 1. tively provide open pathways for the cleaning Fig. 3 is a front view of the cleaner disclosed in Fig. 1 with certain parts broken away. Fig. 4 is a partial end view of thecleaner shown air into the body of the covering so that it may reach to the deeply embedded foreign particles. The ordinary positive agitation cleaner, al— 30 though a more e?icient cleaner than the straight, air cleaner, is itself open to the objection that, while it breaks up the hardened masses of foreign matter in a surface covering it provides no posi tive means to insure that the cleaning air will 35 penetrate into the covering to’ a sufficient depth ' more speci?c objects will/appear upon reading the 15 accompanying speci?cation, reference being had to remove all of said particles. Because of the resistance to air flow through 'the pile of the surface covering the air in entering the suction no'zzle will penetrate therein to a minimum depth 10 and itis necessary that means be provided which direct the air into the covering. The ordinary positive agitation cleaner is also open to objection in that the points at which the agitation of the surface covering takes place are removed from the points at which the cleaning air is effective. Theoretically maximum cleaning ef ?ciency is obtained when thepoint of positive agitation of the surface covering and the point at which‘ the cleaning air is effective are coinci 10 dent.‘ The present suction cleaner provides, through a new and novel design, a construction in Fig. 3. ‘ , . v ' 25 - Fig. 5 is an enlarged cross section upon the line 30 '5-5 of Fig. 3. - Fig. 6 is a cross section upon the line 6-6 of Fig. 5. Fig. '1 discloses a modi?ed embodiment‘of the present invention. . Fig. 8 is a bottom view of the modi?cation dis-. closed in Fig. 7. . 35 -. Fig. 9 is a detail showing of a ?exible mounting. Referring now to Figs. 1 and 2 in particular a suction cleaner constructed in accordance with the present invention is indicated by the reference character I. The suction cleaner i comprises the‘ usual motor casing 2, fan casing 3 forming the fan chamber 4, suction nozzle 5, front vsupport ing wheels 6, 6 and a rear supporting wheel 1. 45 The motor casing 2 houses a driving motor which drives the fan 8 positioned within the fan cham ber 4 upon the motor shaft 9. The aforedescribed parts comprise those parts found in the usual suction cleaner. 50 Positioned within the mouth of the nozzle 5 and extending therefrom are front and rear in which positive agitation is provided for’ the suction covering; in which positive means are nozzle lips Ill and I! respectively whicir‘iare pivot provided which open a pathway for the cleaning ally mounted and, in the operation of are cleaner, 5 air to the deeply embedded foreign particles in _ are provided with an alternate rotary‘inovement 2 2,112,311 through a small arc as hereinafter described. Each of the lips l0 and II is in two parts or sec tions and each part extends from one end‘ of the nozzle to a central supporting member in which it is pivotally mounted. Each lip member is mounted upon an axis I2 and is ?xedly secured thereon by means of securing rivets or screws H, as shown in Fig. 6. The lips I0 and II are made of thin metal strips which are wrapped around 10 the supporting axes l2 and the overlapping ends thereof are secured by rivets l5, l5 to the main portion of said lips. Clamped between the main portion of each lip member and the overlapping edge thereof is a. ?exible strip l6 of fabric which 15 extends the length of said lip member and is sealed along its opposite side to the wall of the nozzle 5 and so functions to prevent air leakage between the lip to which it is attached and the adjacent nozzle wall. Clamping members l1, H 20 which are drawn tightly against the exterior sur face of the nozzle by securing screws, I3, l8 serve to secure each sealing strip to the nozzle wall. At the outer ends of the lips l0 and H the support ing axes I2, I 2 are provided with bearing supports 26 .|9, |9 positioned in plates 20, 20 which are se cured to nozzle ends by securing means 2|, 2|, as shown in Fig. 3, said plates‘ 20, 20 each being pro-v above the chamber 48, with a worm gear 5|. Sup ported by the hollow column 52, as shown in Fig. 1, and rotatably mounted therein is the driven shaft 53 provided at its upper end with the worm gear 54 in mesh with the driving gear 5| on the 5 shaft 9. The lower end of the driven shaft 53 is provided, within the chamber 43, with an of! center projecting pin or crank- 50 which projects, as aforedescribed, within the yoke 49 on the end of the shaft 35. 10 In the operation of the cleaner, as constructed in accordance with this invention, as the cleaner is passed over the surface covering undergoing cleaning the suction within the nozzle 5, created by the fan 3 within the fan chamber‘ 4, lifts the 15' surface covering from the supporting surface and into contact with the nozzle lips l5 and H. The nozzle lips l0 and II are pile penetrating lips be ing relatively thin as compared to the usual nozzle lip, that is, having a thickness of the magnitude 20 of the distance separating adjacent rows of pile of the surface covering or adjacent tufts of the same row of pile. In operation they extend into a covering and separate the adjacent rows or tufts. The inrushing air into the nozzle 5 must pass 25 under the nozzle lips and, because said lips extend into the surface covering, said air in passing vided with a lubricant reservoir 22 to insure the ' thereunder necessarily passes through the cover ing and near the base thereof. The'nozzle lips, life of the bearing member l9. Positioned be 30 30 tween and supporting the two interior ends of however, are not stationary in the operation of the machine but are actuated at high frequency each half section of the nozzle lips is the power receiving mechanism indicated generally by the with an arcuate motion about their axes l2. This] reference character.23,-(see Fig. 5). Mechanism 23 comprises a main body 24 which is provided 35 with upstanding lugs 25~and 25 which are adapted to be secured to the side walls of the nozzle 5 by means of securing lugs or screws 21 and 28 re high speed arcuate movement of the nozzle lips is provided by the driving motor through the fol lowing mechanisms: The‘ vertical shaft 53 is driv 35 en from the motor shaft 9 through coaction of the gears 5| and 54. As the shaft 53 rotates the spectively. The member 23 is positioned within off-center pin or crank 53 carried by said shaft the opening 29 in the nozzle 5 and its lower face 40 30 extends in the plane of the nozzle lips ID and | |. Positioned within the power-receiving mech ' is also rotated and slides, as it rotates, in‘ the yoke anism 23, (see Fig.- 5), are toggles 3| and 32'seated within bearings 33 and 34, respectively, formed in the body 24. Extending horizontally within the 45 body 24 in the guideway 35 of the power-receiving mechanism 23 is the shaft 36 actuated by the suc tion cleaner motor as hereinafter described. The toggles 3| and 32 extend into theguideway 35 and are positioned within the recess 31 provided in the 50 shaft 35. The recess 31 is provided with bearing surfaces 38‘ and 39 at its respective ends for the projecting rounded ends of the toggles 3| and 32. Positioned within the groove 3'! and between the projecting ends of the toggles 3| and’ 32 are the 55 members 4|] and 4| provided with surfaces 42 and 43 which cooperate with the surfaces 38 and 39 respectively to form seats for the projecting ends of said toggles. A spring 44 positioned between bearing members 40 and 4| serves to force said .60 members resiliently, and at all times into contact with the projecting ends of the toggles. . The body 24 is provided with a bottom plate 45 .which is- secured thereto by means of securing screws“, 46. The member 45 is provided with 65 a smooth undersurface 30 which provides a sur face-contacting area in a plane with the edges of the nozzle lips. ' The drive shaft 36 projects rearwardly from the power-receiving mechanism 23 (see Fig. 1), 70 under the fan casing 3, through the enclosing housing 41 and into the chamber formed therein. The end of the shaft 36 is provided with a yoke 49, as shown in Fig. 2, which provides a bearing for a projecting driving crank 50. The motor shaft 9 is provided, within the motor casing and directly 49 of the shaft 35. A reciprocating horizontal 40 movement, the extent of which is determined by the distance at which the pin 53 is offset from the center of shaft 53, is imparted to the shaft 36. At the opposite, or nozzle, endof the shaft 35, are‘ connected the toggles 3| and 32 which, upon the 45 forward and backward movement of said shaft 36, are pivoted in their bearings 33 and 34, respec tively. As the inner ends of each axis l2 of each section of the nozzle lips is fixedly seated within one of the toggles 3| and 32 at its center of rota tion, the lips receive the same arcuate rotary movement which is imparted to the toggles by the drive shaft 33. - 7 It is clear from the foregoing then that as the nozzle lips extend into the surface covering and 55 are moved at a-high frequency through a short arc, the surface covering'is agitated and vibrated, the dirt particles therein are loosened and dis integrated, and their removal by the inrushing air thereunder is made possible. ' 60 Referring now to Figs. 7 and 8 a modi?ed form of the present invention is disclosed in which , the nozzle lip construction is identical with that disclosed in connection with the preferred em bodiment. In this embodiment the agitating lips 65 are actuated by means of an electrical vibrate ing unit, indicated generally by the reference character 55, which is mounted upon the fan casing 3 immediately in the rear of the nozzle. An electrically vibrated element 55 is resiliently 70 connected to an arm 51' which in turn is re siliently connected to an arm 53 which is pivoted between its ends at the ‘pivot point 59. The end of the arm 58 opposite to that to which, the arm 51 is connected is resiliently attached to a 75 3 2,112,311 tion of the resilient mountings used in the con and actuating means operatively connected to said nozzle lip to move said nozzle lip relative to the suction nozzle and to the surface covering. 6. In a suction cleaner adapted to lift the surface covering against the nozzle lips, a noz zle, a nozzle lip pivotally mounted within said struction illustrated in Fig. 8. A resilient rub ber member 6|, preferably of two parts, is po prising a toggle connected to said nozzle lip and a drive shaft 60 which extends within the power receiving mechanism 23 and performs the func tion'therein which was effected by the drive shaft 36 in the preferred embodiment. In Fig. 9 there is disclosed an enlarged sec sitioned within a seat 62 in the'arm 58 and itself 10 encloses the connecting shaft’ or pivot pin, here shown to be the arm 51. The natural resilience of the rubber seat permits the relative movement necessary between the parts. In accordance with the present modi?cation 15 in which the agitating lips are actuated by means of an electrical‘ vibrating unit, the arm 56 is vibrated at a high frequency and within certain nozzle, a nozzle-lip-actuating mechanism com-v driven shaft connected to said toggle, said mech anism imparting a reciprocating arcuate move 10 ment to said lip, ,and ‘means to actuate said shaft. 7. In combination in a suction cleaner a rigid ‘nozzle, a thin pile penetrating lip adapted to . penetrate a tuft of pile mounted on said nozzle, and means to positively actuate said lip with re 15 spect to said nozzle. ‘ ‘8. In a suction cleaner a nozzle, a nozzle lip de?nite limits within the vibrating unit. The movably mounted upon said nozzle and electrical vibrating means connected to said nozzle lip to reciprocating movement of the arm 56 is trans actuate said lip relative to said nozzle. 20 20 mitted through the yielding connection to the 9. In a suction cleaner, a body including a noz lever arm 51 which is yieldingly connected at its end to the pivoted arm 58. The movement of Izle, a nozzle lip pivotally mounted on said noz the arm 51 is transmitted by means of the arm 58 to the drive shaft 60 which actuates the tog 25 gle mechanism 23, shown in Figure 5, which in turn actuates the nozzle lips. This embodiment ' differs from the preferred embodiment only in ' the driving means for the agitating lips. From, theforegoing it is seen that applicant 30 has provided a new and novel suction cleaner construction in which the function of positive agitation and cleaning by the use of air have been combined to produce maximum cleaning e?iciency. A construction has been provided which is characterized by new and novel agi tating means and in which the cleaning air is directed to the base of the surface covering at the point of agitation, thereby making possible the removal of foreign matter that would other 40 wise remain embedded therein. I claim: . p - I 1. A ‘suction cleaner including a-rigid nozzle de?ning a nozzle mouth and a nozzle lip movably mounted thereon, and means to positively actu 45 ate said lip relative to the suction nozzle. . 2. In a suction cleaner, suction-creating means a nozzle open to said suction-creating means and zle, an electrical vibrator mounted on said body. and means operatively connecting said vibrator to said lip. 25 ‘ 10.- In a suction cleaner, a body including a nozzle, a lip movably mounted on said nozzle, a ' vibrator including a moving element mounted on said body. and means including resilient portions connecting said element to said lip. 80 11. In a suction cleaner, a body- including a ‘nozzle having a mouth, spaced movably mounted lips de?ning the sides ‘of the mouth of said noz zle, power-transmitting means connected to said lips, and actuating means connected to said 35 power-transmitting means to move said lips rel ative to said nozzle. ‘12. In a suction cleaner, 8. body including a rigid nozzle having a mouth, a movably mounted lip de?ning a side of the mouth, means sealing said lip to said nozzle, and means to actuate said lip relative to said nozzle. 13. In a suction cleaner, a body including a rigid nozzle having a mouth, spaced movably mounted lips de?ning the sides of the mouth of 45 said nozzle, and means to synchronously actuate said lips-- relative to said nozzle. I having a surface-facing mouth, a nozzle lip piv 14. In a suction cleaner, suction-creating otally and non-rotatably ‘mounted on said noz means, an air passageway opento said suction zle for continuous surface covering contact and _ creating means and having a working end adapt 50' de?ning a side of said mouth, the pivotal axis ed to be placed adjacent a surface covering of said lip being so positioned that said lip can undergoing cleaning, a reciprocating agitating assume a multiplicity'ofangular positions dur element movably mounted adjacent said passage ing its contact with the surface covering. ' way and so positioned relative thereto that air 3. A suction cleaner comprising a nozzle and a passes between the element'and a surface cover 55. nozzle lip thereon, said nozzle lip being pivotaily ing undergoing cleaning in entering said pasmounted, and means to positively actuate said sageway, and vibrating means connected to said lip relative to the ‘suction nozzle to function as ’ agitating element to actuate said element. surface agitating means. ’ 15. The combination with a cleaning tool hav 4. In a suction cleaner a rigid nozzle vde?ning ing an unobstructed suction inlet and parallel 60 a nozzle mouth, nozzle lips movably mounted upon said nozzle. at the sides of said mouth, a toggle mechanism connected to said movable lips and means to actuate ‘said toggle mechanism and so move said. lips relative to said nozzle. ,5. In a suction cleaner adapted to lift the surface covering against the nozzle lips, a noz zle de?ning a nozzle mouth, a penetrating nozzle lip movably mounted on said nozzle at said mouth I and adapted to extend into said surface covering. I lips forming two sides of said suction inlet, of . electrically actuated means for vibrating one of said lips with reference to the tool. 16. A ?oor tool having an unobstructed suc tion inlet,‘ ?oor-engaging li'ps at the margins of 65 said inlet, and means for rapidly vibrating one of the lips of said ?oor tool in operative relation to the suction inlet. , _ DONALD G. sum-rm.