US1590671A

US1590671A - Floor-surfacing machine

Info

Publication number: US1590671A
Application number: US729715A
Authority: US
Inventors: John A Campbell
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-08-02
Filing date: 1924-08-02
Publication date: 1926-06-29
Anticipated expiration: 1943-06-29

Description

June 29,1926.` 1 1,590,671 J. A. CAMPBELL FLOOR SURFACING MACHINE l Filed August 2. 1924 lun,

l Patented June 29, 192,6.,

4UNITED STATES 1,590,671 PATENT OFFICE.

JOHN CAMPBELL, 01\, QUINGY, MASSACHUSETTS.

FLOOR-SURFACIN G MACHINE Application filed August 2, 19.24. .Serial No. 729,715.

The object of thisinventionis to providev 'a simple, durable, quietly running machine of light weight adapted to quickly impart a desirable surface to a floor. The machine of my invention is preferably adapted topolish a waxed wooden floor, although it may be adapted, as hereinafter described, to

preparatory to polish- Figure 6 is a view similar to a portion of Figure 5 showing one of the platform arms, the lbearing supported thereby being ree moved.

Thefsame reference characters indicate the same parts in all the figures.

In the drawings 12 designates a platform having at its rear end two downwardly pro` jecting lower ears 13 and an upwardly proi Ajecting upper ear 14, and at its forward end two forwardly projecting spaced apart arms 15. f v

-'Inserted in orifices in the lower ears 13 is an axle 16 `on .which are mounted two traction wheels 17 constituting rolling supl ports on which the platform is oscillatable to raise and lower the arms 15.

18 designates a handle hinged tothe upper ear 14 -by a pintle 19 inserted 'in orifices the ear 14, the bolt being provided with aclamping nut 24 (Figure 4). `Wh en the nut is tightened the operator grasplng the handle may Aswing .the arms 15 either upf ward or downward to varv the pressure of the 'surfacing tool hereinafter described n a fioor, and to remove the tool from the floor when the machine 'is being transported without action.

Mounted on the ends vof asurfacing tool shaft 25, are bearings preferably provided by concentric annular members 26 and-27,

between which are interposed anti-friction' rolling members 28, as shown by Figure 3. '.lhe inner members 26 receive 'shouldered ]ournal portions at the ends of the shaft 25.

The outer members 27 are fitted in sockets with which the arms 15 are provided. Said sokets include fixed lower members 29 formed on the arms,as shown vby Figures 5 and 6, and upper members 30 detachably secured by screws 31 to the arms 15. Thev

members

29 and 30` form .circular sockets ,conforming to the outer bearing members 4ures 3, 5'and l6) and open at the inner sides of the arms.

The bearing

members

26 and 27 inserted in the sockets are confined against Outwardl movement by the closed ends ofthe sockets and against inward movement by thekshoulders at the inner ends of the journal portions of theshaft.l Y v Y .To the tool shaft 25 is fixed a cylindrical surfacing tool, the construction of which depends on the character of the surface to be formed thereby on a floor. When the machine is. adapted topolish woodenfloors, which is its Vmore important function, the surfacing tool is a cylindrical brush composed of a rigid hub 35 (Figure 3) fixed, as by keys 36, to the shaft 2,5, and bristles 37 of any suitable material fixed to and radiating from the hub, the outer ends of the bristles 'forming a cylindrical periphery. The showing of the tool in Figure 3 is somewhat onventional and it will be understood \t 'at there may be' any suitable connection between the hub and the bristles.

A motor 38, preferably a .1A H. P. 40 degree Gr. E. motoris boltedto the platform 12, the latter being provided with holes 39 (Figure 5) for the reception ofthe attach- .ing bolts.Y The driving shaft 40 of the motor is-connected with' the tool shaft 2 5 by driving connections preferably embodied in a sprocket wheel 41 fixed to the driving

p60 bearing members

26 and 27 are shaft, a sprocketwheel 42 xed to the tool shaft, and a drive chain 43 connecting said wheels. l

A portion of the cable 44 which supplies l current to the motor may extend through aportion of the handle. When the machine is not. in use, the free end portion of the cable may be stored on hooks 45v on the handle, as shown by Figure 2. j

The arrangement is such that the motor exerts downward'pressure on the tool. This pressure may be Y varied by the operator through the handle, and the handle may be held in position to raise the'tool from the floor when the machine is being inoperatively transported.

The machine preferably comprises also a hood composedof an arched body portion 47 covering the upper portion of the periphery ofthe tool and end portions 48 covering the upper portions of the ends of the tool. as shown by Figures 2 and-3.- The hood is provided with a fiange 49 attached by screws 50 (Figure l) to the forward portionof the platform. Hood extensions overhanging the lower portions of the ends of the tool are provided by dowlmrdly projectingl ears 51 formed on the arms l5. A guard 52 covering the exposed portions 80 of the sprocket wheels and drive chain, .is 'secured by a bracket 53 to the platform and by a bracket 54 to one of the end portions 48 of thehood, t-he brackets being screwed or bolted to the platform and hood e-nd.

The machine may be adapted for scrubbing floors by substituting for the brush a scrubbin roll adapted to be used with Water for rapily cleansing floor surfaces. The machine may also be adapted for dressing floors by abrasion, Without the'use of water` by substituting for the brush a sanding roll which may consist of a cylindrical body and `a facing of sand paper -secured thereto. lIn either case', the hub portion of the tool is engaged lWith the shaft 2521s shown by Figure 3. The removal of the upper members 30"p ermits the removal of the shaft and the bearing

members

26 and 27 from the sockets on the arms. vThe bearing members may .50 then be removed from one end of the shaft to'bear on the floor behind the tool and prevent the scattering of dust and water.

It will now be seen that when the upper socket members- 30 are removed, and the pfced on the journal portions of the tool vshaft-25,

said bearing members and journaljportions may be deposited in the lower socket members 29, and then secured bv the. attachment of the upper socket members to the arms. The bearin members are secured against inward endwlse movement byI the shoulders, at the inner ends of the journal portions, and the bearing members and the shaft are secured against endwise movement in either direction, by the closed ends of the sockets. Provision is therefore made for conveniently removing a tool adapted for a given kind of Work, and substituting therefor another tool adapted for a difi'erentkind of Work,

The closed ends of the sockets prevent the admission of dust, raised by the tool, to the outer ends of the bearing members. The(inner ends of the sockets are closed by end portions of the tool, said end portions including the end ofthehub shown at the left in Figure 3, closing the inner end of one ofl vthe sockets, and the sprocket Wheel 42 which is arranged to close the open end of the other socket. Dust raised by the tool is therefore excluded from the inner ends of the sockets. This exclusion of dust is an important -factor in a floor-surfacing machine, particularly when the tool is adapted to abrade the surface of a. dry floor.

I' claim A floor-surfacing machine comprising a Wheeled carrying frame including spaced apart arms, sockets on the arms having closed outer ends at the outer sides-of and integral with the arms, and open inner ends at the inner sides of the arms, a rotary tool adapted to act on a floor and includln a hub, a shaft fixed to the hub and pro-vied with shouldered journal portions projecting from the hub,and a driving wheel fixed to the shaft and bearing-on one end of the hub, a motor on the frame, connections betweeny e motor and driving wheel on the tool shaft, annular bearing members mounted on the journal 'l ortions of thetool shaft and inserted, wit the'journal-i'portions, 1n sald sockets, .thebearing being confined a ainst inward movement-bythe shoulders o the journal portions ofthe .tool shaft, and against outward movement by the closed ends of the sockets, said closed ends exclud-J in dust raised by the tool from the outer en s ofthe bearing members, theV open ends of the being closed- .by an endportion of thef'tool hub, and by the driving wheel -so-that dust raisedby the. tooljis excluded .from the inner of the bearing members; H

In. testimony whereof I-have aixed my 120 si ature.-

. JOHN A. CAMPBELL.