US2372007A - Vacuum sweeper construction - Google Patents

Description

March 20, 1945. H. A. KRoENLElN VACUUM SWEEPER CONSTRUCTION Filed Nov. 9, 1938v closed in my result in better the appended claims.

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Patented Mar. 20, 1945 Nr vOFFICE j VACUUM SWEEPER JONSTRUCTION I Henry A.'Kroenlein, Jackson,

The Filtex Corporation, poration of Michigan rApplication November 9, 1938, Serial No. 239,610

I Cl. -16) 4 Claims.

The present invention relates to improvements in the construction of the so-called cylinder type vacuum sweeper; being especially concerned with the structural details of the vacuum sweeper dis- D80,973, filed November 9, 1938, now Design Patent No.- 113,531, granted February 28, 1939.

Objects of the present invention reside in the details of construction hereinafter set forth. and the combination and arrangement of parts which appearance, improved performance, increasedutility, and a reduction inthe cost of manufacture. The invention is defined in In the drawing, l

Fig. 1 is a longitudinal cross-sectional view of the vacuum sweeper construction,

Fig. 2 is a fragmentary cross-sectional view of a modified mounting ring, and

Fig. 3 is a fragmentary cross-sectional view of the embodiment of Fig. 1 showing the tie rod assembly.

design application Serial No.

Referring to the drawing,'the vacuum sweeper v shown in Fig. 1 is a well known cylinder type generally designated by reference character I8 comprising front and rear heads I2 and I4 preferablyof cast metal, and a the front of the hollow cylinder I6. For inexpensive construction, the cylinder' I6 may b e of fibrous tube construction with some ysuitable nishing surface suchas imitation leather or the opposite ends of the cylinder I6 tele' scope with cylindrical flanges I8 and 28. t

Clamped between one end of the cylinder I6 peller 32 ina at .the forward 38 having a filter Supported .posite ends of the shown, each rod 88 is threaded at 86 into a corrubber bo Mich., assxgnor to Jackson, Mich., a cor- 'Ihe unit 26 includes a bracket 62--whi'chprovides a bearing 54 for the shaft 56 and supported for` the motor 68. AA `housing 68 is secured to the bracket 52 by screws 62 and closes one end of the unit 26 except for an outlet open-ing 64 corresponding to the intake opening 58. With the hinged closure 66 closing the opening 68 in the head I4, air from the outlet 64 will discharge into the chamber 18 and iilter out through the openings ,'I2. When the device is to be used as an air blower. a 'connecter is fitted into the outlet 64 as shown in dotted outline, the closure 66 being hinged out of the way. The switch and closing the motor circuit, preferably, takes the form vof a depressible foot plate I4 hinged at 16 and resting against a push on and off switch I8 of well known construction.

'I'he head I4, the cylinder I6, and the unit 26 are held in assembled relation through a pair of concealed tie rods 88 located upon opposite sides. of the cylinder I6. The flange portions I8 and 28 have thickened bosses 82 and 84 in which oprods are anchored. As

respondingly threaded hole 88 in the boss 84. The opposite ends of the rods 88 are also threaded at 98 to receive a cylindrical nut 92 having a screw drive slot 84 therein. With the nut seated vagainst the shoulder 96, rotation thereof will clamp the mountingring 24 and the cylinder I6 firmly between the flange I8 and shoulder 22. It will be understood that the nuts 92 are tightened with the head I2 in a hinged position. As I consider it desirable to have a resilient bumper entirely around the sweeper,` I prefer to house the rods 88 in sections 98 of the rubber bumper which` extend along the sides of the cylinder I6. Thus the rods 88 are covered by the bumper sections while functioning to support the same. The heads I2 and I4 have embracing channels |88 and |82 in which bumper sections |84 and |86 are supported. To secure these sections in place there is a wire core |88 which is tapped at opposite ends at II8 to receive anchoring'screw I I2.

In the' modication of Fig. 2, the mounting ring ||8 comprises a rubber ring portion |I4 and an outer andl inner metal ferrule portions I|6 and ||8. With this arrangementV the entire support given the pump aud'motor uniti is through the Itshould be apparent from the foregoing description that I have provided a very simple assembly. 'I'he tie rods 88 hold the major portion e construction in an assembled relation in- \f0r opening 'Where it may arrangements that have been heretoforeproposed have notgbeen entirelysatisfactory for-the 30- Time-mettent Beer AvAILABLecorY ol ding he air pump and motor unit.v With the head l2 in closed position, the tie rods 80 and associated structure are completely concealed. In addition, the rods function to support the bumper sections extending along the cylinder portion I6. Through the use of the tie rods 8D and the character of the reinforcement afforded by the parts withwhich the ends of the cylinder I6 telescope, the cylinder I6 may be ineigpensiyeiy manufacturca frame aifdartube ortneiikefmakingn possible vto'provide a vacuum sweepr'of extremely light and rigid construction.

In addition to providing a construction in which all securing means for in an assembled relation are .hldinerthez .iti-1,11@` hidden' as in the case of bumper sections 9d, '.the-supporting andisecuring construction for'theibumperesectons* |04 and |06 are likewise concealed. These refinements in construction -,giyegawfyery;pleasing 20 eect to the eye and are very much in with present day trend in design. Asit isimpracticalto place theon-andp keeping switch on `the operatingfhandlef Ithrough"which 'the nozzlejis manipulated over the Ysurf ace tobe jcleaned', it fis the practice to ylocate the' 'motor shoulder portions and portions with which oppo.. site ends of said tube telescope, an air pump and motor unit adapted to be concentrically supported within said tube having a mounting ring struc ture, said mounting structure being located between one of said shoulder portions and one end of said tube, and tie rods extending longitudinally of said tube and anchored in said reinforcingstructure at oppositeends of said tube for Fhoming n neementsj@assembled relation and *for* clamping said mounting 4structure in position portion,

"merits infassembled relation,

between a shoulder and an end of said tube.

*i 2. A vacuum sweeper of the type described rcomprising gan'. outer brous elongated tubular talhead portion located at one end of-sai'dj1tube a".rnetal flange portion located at eppositef n'd'lof said tube, tie rods extending ongitudinall'yb'ffsaid tube and located upon the .-.outside thereof anchored at opposite ends to said securing said elehead and yflange portion for and bumper portionssupported uponsaid tie rods.

- whereinpthe exposedportions of said'tie rods are switch upon the housing ofthe sweeper structure reason that thev switch`has received considerable abuse from f oot manipulation. In my construcbe manipulated by. theffoot. The

tion I havefprovided what mightfbe termeda protective shell for A the switch l proper which at `Vthe ,same tinji'e becomes an operatiriE-leven-facilitati'ngthe operatinfo the; switch as itaftords a' considerable' area' upon 'which pressure may be applied for turning Vthe vswitch on and off. f

sweeper 'ef ,thelftype described dmy.inventiom'jwnet ,I desire entirely housedjby said bumper portions.V

sweeper of the type described comprising a central tubular portion,` a pair of headsfolosin'gopposite endsof said tubular portion, a plurality of tie rods extending longitudinally o f said ,tubular portion disposed on .the outside thereof `f orfsecurin'g one of saidheads tofone'end of said tubular portion. the 'other of I .Saidheads being rernovable 'to afford access to comprisngan elongated tube, reinforcing' strucopposite ends of said tube having supported by sa the interior of saidtubular portion, said other head'in' position concealing o ne end of `saidtie -rods and the other end of said tie' rods being anchored in said. first head.v and bumper means id'ti'e rods 'andd1sposed on the outside of. said-tubular expsedl'en h o! said tierods.

narrarl LA; KRONLEIN.

portion for concealing the

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