Патент USA US2126362код для вставки
Aug. 9, 1938. u. A, WHITAKER ET AL 2,126,362 SUCTION CLEANER Filed NOV. 20, 1955 5 Sheets-Sheet l Ff‘? 2 Charles lillbéjlbg; Urea/3A . W?l'l‘aker ATTORNEY Aug. 9, 1938. 2,126,362 U. A. WHITAKER'ET AL SUCTION CLEANER Filed Nov. 20, 1935 3 Sheets-Sheet 2 FfyHQY we kAna r BY % EWB aw?aw mMra w. w J. a e R. Aug. 9, 1938. ‘u. A. WHITAKER ET A1. 2,126,362 SUCTION GLEANER Filed NOV. 20, 1935 3 Sheets-Shegt 3 INVENTOR Char/e517ZZZ‘yl‘or UrzcasAM/hz'iaker IYQIIJ/? Wile ATTORNEY 2,126,362 Patented Aug. .9, 1938 UNITED STATES ‘PATENT OFFICE 2,125,362 SUCTION CLEANER Uncas A. Whitaker and Harry B. White, Canton, and Charles H. Taylor, North Canton, Ohio, assignors to The Hoover Company, North Can- ‘ ton, Ohio, a corporation of Ohio Application November 20, 1935, Serial No. 50,634 * 14 Claims. .(Cl. 15—-6) The present invention relates to suction clean _ end play of the supporting shaft for the front . ers in general and more particularly to new and wheels; novel improvements in suction cleaners adapted for on-the-?oor cleaning, and for both suction 5 and blowing-in-o?f-the-?oor cleaning. More speci?cally, the invention comprises new and novel improvements in the conversion means by which the cleaner is transformed from an on-the floor unit to an off-the-?oor unit, and vice versa. It is an object of the present invention to pro vide a new and improved suction cleaner. It is another object of the invention to provide a new and improved suction cleaner adapted for on-the ?oor cleaning, and for both suction and blowing off-the-?oor cleaning. Still another object is the provision of a suction cleaner adapted for both blowing and suction off-the-?oor cleaning, and in which the nozzle and the positively driven agi tator therein are lifted above the cleaning surface 20 in the ofi-the-iioor cleaning operation. A still further object is to provide a suction cleaner in the blowing off-the-floor cleaning relationship of which air enters the suction-creating means through an inlet other than the suction nozzle. A further object is to provide a suction cleaner in which an improved type of converter valve func tions to change the cleaner from an on-the-?oor Figure 6 is a partial bottom view of the cleaner, ‘similar to Figure 2, but with the converter valve moved to its position in the of‘i-the-?oor cleaning relationship ; 5. . Figure 7 is a section upon the line 'l--‘l of Figure 6 illustrating how the converter valve ex~ tends across the air passageway between the fan chamber and the nozzle to seal the latter from 10 the suction-creating means; Figure 8 is a section upon the line 8-485 of Fig» ure 6 and illustrates the mechanism by which the cleaner nozzle is raised upon the movement of the converter to its off-the-ficor position shown in 15 Figure 6; Figure 9 is a section upon the line t--@ of Fig ure 6 and shows the manual adjustment for the front supporting wheels; Figure 10 is a top view of the cleaner with cer~ 20 tain ‘parts of the casing broken away to show the blower valve which seals the blower conduit from the exhaust or high pressure side of the suction creating means; ‘ Figure 11 is a transverse vertical section upon 25 ‘the line ll-—ll of Figure 10 and shows a dusting tool hose connected to the blower conduit and the . cleaning unit to an off-the-?oor cleaning unit. - blower valve pivoted into a position to direct air I Still another object is the provision of a suction into the blower conduit; 30 cleaner in which interlocking mechanism prevents the use of the cleaner as an off-the-?oor blowing unit until the cleaner nozzle has been sealed from the suction-creating means and the nozzle has been raised from the supporting surface. These. and other more speci?c objects will appear upon reading the following speci?cation and claims and upon considering in connection therewith the attached drawings to which they relate. Referring now to the drawings in which the same reference characters refer to the same parts throughout: Figure 1 is aside view of a suction cleaner con structed in accordance with the present invention with certain parts of the casing broken away; Figure 2 is a bottom view of the cleaner of Figure 1 with a portion of the bottom piece broken away to show the mounting of the front wheels; Figure 3 is a section upon the line 3-3 of Fig ure 2, and illustrates a closure valve at the eye of the fan chamber in the air passageway connecting the fan chamber to the nozzle; Figure 4 is a view of the valve element of Fig ure 3, Figure 5 is a section taken upon the line 5-5 of Figure 2 and illustrates the means for preventing Figure 12 is a section upon the line lZ-It of 30 Figure 10 and illustrates the’ locking means by which the converter is retained in either its oper ative or inoperative position; Figure 13 is a partial side view of the cleaner with dusting tool connected and with parts broken away and showing the position of the dusting tool hose lock-out for the blower conduit with the converter in its operating position; Figure 14 is a section through the blower valve .40 upon the line I4--l4 of Figure 10; Figure 15 is a partial view of the blower valve and the actuating mechanism by which the valve is operated upon the insertion of the dusting tool connector. _ - . A suction cleaner constructed in accordance 45 with the present invention is basically the same as a suction cleaner which is designed for on-the floor cleaning. only. A suction nozzle l is pro vided with surface-contacting front and rear lips 2 and 3 respectively. An air passageway 4 having a removable bottom plate 5 connects the nozzle I to the eye 6 of the fan chamber, there being a manually operable spring-pressed detent 8 which cooperates with a lug 9 upon the bottom 65 plate 5 to retain it in place. 2 2,126,362 Within fan chamber ‘I is positioned a suction ing into the nozzle is aided and assisted by the creating ‘fan III. A motor casing II is positioned rotating agitator to dislodge embedded foreign immediately above the .fan chamber and houses matter in a surface covering undergoing clean ing and that foreign matter is removed from the air as it passes through the dust bag I‘! in leaving Ch an unshown driving motor, the shaft l2 of which extends downwardly through the fan chamber ‘I and into the air passageway 4 where it is formed as a driving pulley H. A rotary agitator l4 including rigid beating elements and?exible brush elements is mounted the apparatus. ' In addition to the parts of the cleaner which are necessary for on-the-floor cleaning, the cleaner constructed in accordance with the pres 10 within nozzle 1 and is adapted to contact a sur ent invention is also provided with means which face covering between the nozzle lips 2 and 3. Agitator “is provided centrally with a pulley surface which seats a belt l5 driven by the shaft pulley l3 at the lower end of motor shaft l2. An exhaust outlet 16 extends rearwardly from 15 enable it to function as a suction unit or as a the fan chamber 1 to convey air under pres . sure therefrom. A dust bag ll of any suitable ' construction seats upon the outer end of the ex haust outlet being retained in place by nuts 20 l8, l8 which clamp the bag ring l9 to the ?anged outer end of the exhaust outlet. The cleaner is movably supported by ‘rear wheels 20, 20 and by front wheels 2|, 2|, ‘the latter being mounted upon crank arms at the extremities of a transversely extending shaft 22.‘ Shaft _22 is rotatably mounted on the underside of the top wall of the nozzle l in seat-forming brackets 23 illustrated in Figures 2 and 5, end play in the shaft being prevented by means of 30 a projection 24 which is slidable within a cir— cumferential slot 25 in one of the brackets. The nozzle I of the cleaner is raised and lowered by a manual adjustment mechanism comprising a rotatable knob 26. Member 26, as 35 is most clearly illustrated in Figure 9, includes an internally threaded sleeve which encloses an externally threaded sleeve 21 whichgit advances blower unit in off-the-floor cleaning. To enable it to function as a suction unit in off-the-iloor cleaning there is provided a. converter member 35 which is pivotally vmounted upon a pin 36 15 on the under side of the fan chamber 1 imme diately in the rear of the fan eye 6. Converter 35 includes a forward portion shaped as a valve which is adapted to extend across the air pas sageway 4 between the fan eye 6 and the nozzle 20 to cooperate with the top, bottom and opposing side wall of the air passageway to seal the nozzle from the fan chamber. The converter also in cludes a conduit portion which is rectangular in cross section and which is of such length 25 that with the valve portion of the converter seal~ ing the nozzle from the fan chamber the conduit 34 of the converter is connected to the suction creating means. Converter 35 is adapted to assume two posi tions, one of which is illustrated in Figure 2 and the other in Figure 6. In its inoperative or on-the-?oor cleaning position it is retained as il lustrated in Figure 2 and lies below the fan chamber 1 and the exhaust air passageway l6. To protect the converter further from contact with foreign objects a protector plate 31 is pro- - into or from the nozzle upon being itself ro tated. A plunger 23 slides within sleeve 21 and 40 is connected ,at its lowerend to a bracket 29 vided which underlies the converter in its in mounted upon the adjacent wheel-carrying crank arm at the end of shaft 22. The front wheels are normally retained in the uppermost position permitted by the contact of the end of 45 bracket 29 with the upper‘or inner end of sleeve inoperative positions there is provided a spring pressed latch 38 at the outer end of the conduit portion. The latch is illustrated in detail in Figure 12. In the inoperative position of the operative position, illustrated in Figure 2. To retain the converter in its operative and 40 converter the latch extends against the rear 21 by a coil spring 30 which encircles a central portion of shaft 22 and exerts a rotating torque thereon. The shaft may be rotated to lower the edge of protecting plate 31, as illustrated in Fig wheels against the force exerted by the spring position is accomplished by depressing the end 50 without adjustment of the manual adjusting means. The manual adjusting means, however, at all times determines the upper limit of wheel movement and adjustment. ure 2, and in the operative position of the con verter fits within a seat 39. Release from either of the latch. 50 At one side of the fan eye 6 the air passage way 4 is provided with a pivoted gate or valve 40, illustrated in Figures 2, 3 and 4. Valve 40 is nor As in the usual suction cleaner, a handle is ' mally held. by means of a torsion spring 4|, in sealing relationship to an opening 42. The for 55 provided, the lower end of'which is indicated at M in Figure 1, and the cleaner can be pro pelled over a surface undergoing cleaning by the exertion of a moving force thereon. It is com mon practice in suction cleaners to support the 60 upper end of the dust bag II from the handle, and while it is not part of the present invention ' the same means may be used here if desired. The cleaner partshereinbefore described are sufficient to provide a cleaner for on-the-?oor 65 operation. In that operation the driving motor rotates the suction-creating fan and a reduced pressure is ‘effected within the nozzle l resulting in the lifting of the surface covering against the lips 2 and 3 and the drawing of cleaning air 70 through the nozzle, through the fan chamber ‘I, and exhausting it into the'?ltering bag II. The driving pulley II at the lower end of the motor shaft is also rotated and the rotary agitator l4 within the nozzle is driven therefrom by the 75 interconnecting belt II. The cleaning air rush ' ward or inner end of the valve portion of con verter 35 extends adjacent opening 42 and is adapted to pass through that opening, as the converter pivots to enter the air passageway to perform its function of sealing the nozzle from the suction-creating means. In this movement the forward end of the converter contacts the valve 40 and pivots it to open position. _ In the conversion of the machine from an on the-floor cleaner to an oiI-the-floor cleaner the operator ?rst depresses the latch 38 permitting the converter to be pivoted from the position shown in Figure 2 to that, shown in Figure 6. This may be done with the foot. The valve por tion of the converter moves through the opening 42 in the air passageway, pivoting inwardly the valve 4|! against the force exerted by spring 41, and extends across the air passageway as illus trated in Figures 6 and 7. Upon'the converter reaching its inner sealing position the latch 38 75 , pletion of the conversion of the machine to an o?-the-?oor blowing unity is then accomplished by the .use of the construction hereinafter de seats within the seat 39 and the converter is locked in’ place until intentionally displaced therefrom. With the converter so positioned the .suction of the suction-creating means is effective within the converter conduit and the nozzle is scribed. ' ' The cleaner casing or body immediately in the rear of .the motor casing Ii and above the exhaust outlet i6 is provided with a blower con duit or seat at which extends transversely across the cleaner and is open at one end. The bottom wall of the conduit which wall is also the top wall 10 I sealed therefrom. During the operation oi the cleaner in o?-the floor cleaning, however, the agitator it continues to be driven. 3 2,126,362 To eliminate the possibility of sur 10 face contact by this element, with resultant un necessary load upon the cleaner motor, auto matic means are provided to depress the front supporting wheels M, ii to raise the nozzle and the agitator. This mechanism comprises a con verter-contacting lever arm it which is pivoted upon a vertical pivot pin ltd. Lever tit carries a roller contact M at its outer end which is adapted to roll on and receive iorce from the side of con verter it to pivot the lever arm. A shaft-con 20 tacting lever M is pivoted upon lever arm at at a of exhaust outlet it, is provided with an opening or port it which is normally closed, when the cleaner is not used as a blowing unit, by a blower valve bl pivotally mounted upon a transverse shaft ht positioned in the air passageway it immediately in the rear of the conduit. As shown in Figure l-i‘ the pivotal aids hill of the valve is protected by an enclosing seal member till to prevent the accumulation of foreign matter. ill. Lever it slides upon a vertical pin it upon its actuating lever iii being moved, being pro vided with a slot til which directs its forward end forwardly and into contact with the wheel shaft it as illustrated in Figures 6 and 8. A coil spring ht is positioned at the pivot point vltd of lever it and functions to pivot lever arm to hold the for ward end of lever [it in contact with the cranl: 30 arm of shaft iii, as illustrated in Figure 8. - 20 The actuatingmeans for valve bl is illustrated‘ point spaced from pivot pin M, as indicatedat in Fig. 15 and comprises a cam member it car ried by shaft it adjacent the mouth of conduit 55, as shown in Figure 13. A spring ti connects at one end to the cleaner body and at its oppo 25 site end to the cam member it and functions to hold the valve normally in its upper position to close port it and seal the blower conduit 5% from the suction-creating means and exhaust passage way iii. The cam member it is formed with a 30 The which extends helically around the shaft normal on-the~?oor cleaning position of the shaft » groove M of the valve as an axis. The conduit bit is. is determined, of course, by the position of the formed at its mouth with a slot immediately ad manual adjusting means it in cooperation with the coil spring it acting to hold the shaft in the uppermost position permitted by the adjust ment. Upon the converter being moved from its ' inoperativeposition, shown in Figure 2, to its operative or oi‘i-the-?oor position, shown in Figure 6, lever arm dd is pivoted from. the position shown in Figure 2 to the position shown in Figure 6 by the contact of the side of the converter with ‘the roller 1%. The‘pivotal movement of arm dd results in the advancement of shaft-contacting arm it which slides upon supporting pin it. This forward movement of the arm lit results in a downward movement of the crank arms and of the front supporting wheels ii, iii. The wheels are pivoted downwardly from an upper position, as indicated in dotted lines in Figure 8, to a lower position, as indicated in full lines in the same ?gure. 'li‘his downward movement of the wheels results in the raising of the front end of the cleaner including the nozzle and the agitator. In the cleaning oi articles in oiiY-the-?oor opera, ation it is often desirable to use positive pressure or a‘ blowing action rather than suction. In cleaning radiators and pipes, for example, it is often desirable to blow dust and foreign objects 60 from the suriaceto which they adhere. In the suction cleaner constructed in accordance with the present invention, the conversion of the ma-_ chine to positive pressure from an on-the-?oor unit, or from an oiT-the-?oor unit arranged for suction, is readily and easily accomplished. To arrange the cleaner for oiiY-the-?oor blow ing it is first necessary to position the converter in in its operative or o?-the-fioor position as though the machine were to be used in o?-the ?oor suction cleaning. The cleaner nozzle is then sealed from the suction-creating means and the forward end of the cleaner including the agitator is_raised from the supporting surface. All air entering the suction-creating means enters through the conduit of converter 36. The com jacent member it so that upon insertion of the‘ rectangular metallic end iii of the dusting tool 35. hose, the greater length of which is formed of an elongated flexible tube (it, a projecting pin it on the lower corner of connector it will enter the slot and extend into groove in element till. its the connector is advanced to its seating position the pin till will cause the cam member tit to ro tate, thereby rotating the valve hi to open the port it and to close the exhaust passageway leading to the dust bag. The withdrawal of the dusting tool connecter moves the valve again to its lower conduit-sealing relationship with blower port tilt, the spring Gil retaining it in this position. it spring~pressed latch til is provided upon the top of connector it which extends into a seat in the upper wall oi the conduit ti and retains the connecter against accidental displacement. ' To prevent the connection of the dusting tools hose to the high pressure side of the suction1 creating means unless the forward end of the cleaner has first been raised, there is provided a 55 lookout member W. Member is in the shape of a right angle with its upper end extending into the conduit 5% during on-the-l‘ioor cleaning. Lockout lid is provided with a coil spring til which urges lockout to from the conduit. 60 With con verter it in its inoperative position the outer end of lockout (it, which is formed as a camming surface it, rests upon its top, as shown in Figure 1, thereby holding the opposite end of the mem her in conduit-obstructing position, and render ing it impossible to insert the dusting tool con necter into the blower conduit. ‘Upon the move vrnent oi the converter in to its operative posi tion, as illustrated in Figure 13, the converter is displaced from below the end of the lookout and 70 that member moves downwardly, under ‘force exerted‘ by spring 61!, resulting in its inner and upper end- moving outside ‘the conduit and per mitting of the insertion of the dusting tool con necter. ‘ // / 4 / 2,126,362 It is possible to use the cleaner as either an oiI-the-?oor suction unit or as an o?-the-?oor combination of suction creating means, a nozzle having an air inlet passage to said suction creat blowing unit by inserting the dusting tool con necter 62 into the proper seat upon the cleaner. As the converted 35 is always positioned in its operative position in oif-the-?oor cleaning the member mounted in said nozzle, a converter connecter 62 can be inserted therein and retained by its latching means 65. In this operation the ing means, a rotary ?oor-covering contacting member pivotally mounted on said cleaner and normally positioned exterior said air inlet pas sage, said converter member being adapted to be swung bodily into a position‘ to seal said inlet nozzle is sealed from the suction creating means passage from said suction creating means and and the blowing conduit is also sealed from the to become a secondary inlet passage, an adjust exhaust outlet or high pressure side of the _able wheeled support for said cleaner, and means suction-creating means by the valve 57. If the interconnecting said wheeled support and said operator desires to blow with the dusting tools he converter member whereby the former is ad need only withdraw the dusting tool connecter justed to raise and lower said nozzle in a move 15 62 from the converter 35 and insert it‘ into the blower conduit 55. The insertion of ‘the con—" necter 62 results in the rotation of the cam mem ber 60 and the valve 51 which is carried upon its own shaft 58 connected to the valve member. The valve assumes a position in which the ex haust outlet is sealed from the dust bag and air passing from the suction-creating means enters the conduit 55 and so will pass into the dusting tool connecter and hose. From the foregoing it is seen that an im proved cleaner has been provided which is readily transformable from one type of cleaning unit to another. It is to be understood that the speci?c embodiment is only ‘illustrative and that the in 30 vention is only limited as recited by the claims following. We claim: ' 1. In a suction cleaner of the type adapted for on-the-?oor and for oiI-the-?oor cleaning, suction creating means, main and secondary suction inlets, main and secondary pressure out lets, valve means to seal said main suction inlet from said suction creating means and to connect said secondary suction inlet thereto, valve means 40 to seal said main pressure outlet from the pres ment of the latter into and out of converting 15 position. 6. In a suction cleaner, a nozzle, a fan cham ber having an eye, an air passageway connect ing said eye to said nozzle, a port in said passage way, a valve normally closing said port, a con 20 verter including a valve portion and a conduit portion pivoted to swing through said port, forc ing said valve to its open ‘position, and to extend across said passageway to seal said nozzle from said fan chamber eye and to connect its own conduit portion to that eye. 7. In a suction cleaner, the combination of a casing having a nozzle and suction creating means including a fan chamber having an inlet opening connected with said nozzle through a 30 passageway provided with a port located adja cent said inlet opening, a valve normally closing said port, and a converter comprising a conduit mounted on said casing to be shifted endwise through said port and, forcing said valve into 35 open position, to extend across said passageway and close off said nozzle and simultaneously establish communication with the inlet opening to said fan chamber. 8. In a suction cleaner, a nozzle, an agitator in 40 sure side of said suction creating means and to said nozzle, an air passageway, a fan chamber connect said secondary pressure outlet thereto, connected to said passageway, a fan in said and means preventing the connection of a dust chamber, a drive shaft carrying said fan in said ing tool hose to said secondary pressure outlet chamber and extended therethrough into said with said main suction inlet connected to said passageway, power-transmitting means connect 45 suction-creating means. ing said shaft to said agitator and extended 2. The construction recited in the preceding through said passageway, a port in said passage claim characterized in that said secondary inlet ' way, a valve normally closing said port, and a is formed on and is movable with the valve which converter including a valve portion and a conduit seals the main suction inlet from the suction- I portion, said converter being pivoted to swing creating means. 3. The construction recited in the ?rst claim characterized in that the means preventing the connection of a dusting tool hose to the secondary pressure outlet comprises a lookout obstructing said outlet and connected to the means to seal the main suction inlet from the suction-creating means. '60 , ' 4. In a suction cleaner, the combination of suction creating means, a nozzle having an air inlet passage to said suction creating means, a through said port, forcing said valve into open position and bringing its valve portion trans versely across said passageway to close said nozzle from said fan chamber, with its conduit portion projecting from said port. ‘ 9. In a suction cleaner having a body,_a nozzle, 55 a fan chamber, an air passageway connecting said nozzle to said fan chamber, a normally closed port in said passageway, a converter comprising a valve portion and a conduit mounted on said 60 rotary ?oor-covering contacting member mount body and lying substantially within the con?nes of said body, said converterbeing movable to a ed in said nozzle, a valved port leading into said second position in which said valve portion ex air inlet passage, a conduit plvotally mounted on tends through said port to close said passageway with said conduit portion projecting therefrom 65 said cleaner and adapted to be swung bodily through said port to close off said ?rst mentioned air passage and to form a secondary air inlet passage to said suction creating means, adjust able means for raising and lowering said nozzle, 70 and means operative in the movement of said conduit into and out of secondary inlet forming position to actuate said adjustable means to raise and lower said nozzle. 5. In a suction cleaner adapted to be converted .75 to and from off-the-?oor cleaning operation, the to receive a dusting tool hose. 10. In a suction cleaner having a body, a nozzle, a fan chamber, an air passageway connecting said nozzle to said fan chamber, a normally closed port in said passageway, a converter comprising 70 a valve portion and a conduit mounted on said body and lying substantially within the con?nes of said body, said converter being movable to a second position in which said valve portion ex tends through said port to close said passageway 75 2,126,362 5 outlet, a blower seat for dusting tools, valve means to close said exhaust outlet and open said blower seat to said suction-creating means, and cam means adjacent said seat adapted to be its positions. '11. In a suction cleaner, the combination of ; operated by the'seating of a dusting tool unit in said seat to actuate said valve to connect said suction creating means, a blower conduit, a suc with said conduit portion projecting from said port to receive a dusting tool hose, and means to secure said converter releasably in either of tion conduit shiftable into and out of connection with said suction creating means, and means for normally obstructing said blower conduit against 10 the seating of a dusting tool unit therein and operatively connected with said suction nozzle -whereby said obstructing member is removed from said blower conduit upon the shifting of said suction conduit into connection with said 15 suction creating means. 12. In a suction cleaner, the combination of suction creating means having an air inlet and seat to said suction-creating means. 14. In a suction cleaner, the combination of a‘ casing having a nozzle and suction-creating means including a fan chamber normally com 10 municating with said nozzle through an air passageway having a port in the wall thereof adjacent said fan chamber, a, valve member nor mally closing said port, a Wheeled support vfor said casing adjustable to regulate the height of 15 said nozzle above the ?oor surface, a converter member comprising a conduit adapted to be in an air outlet, a conduit shiftable to and from a. serted through said port into a position to close position to communicate with said suction creat- . o? said fan chamber, and means operative by said converter in its movement to and from con 20 preventing the attachment of a dusting tool unit verted position to actuate said wheeled support to said air outlet unless said conduit has ?rst - to raise and lower said nozzle. been shifted into communication with said suction creating means. 25 13. In a suction cleaner, a suction-creating 25 means having a suction inlet and an exhaust ing means through said air inlet, and means fol‘ TAYLOR.