US1503048A

US1503048A - Floor-polishing machine

Info

Publication number: US1503048A
Application number: US651824A
Authority: US
Inventors: Huber Bernard
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-07-16
Filing date: 1923-07-16
Publication date: 1924-07-29
Anticipated expiration: 1941-07-29

Description

July 29 1924.

1,503,048 B HUBER FLOOR POLISHING MACHINE I Filed July 16, 1923 2 Sheets-SheeLl gig aitozncq 1,503,048 B. HUBER FLOOR POLISHING MACHINE Filed July 1a, 1923 2 smug-shew 2 gnuanto'c Patented July 29, 1924:

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BERNARDI-IUBER, or" OAKLAND, CALIFORNIA.

'FLGOR-PO'LISHINGMACHINE.

fl'pplication filedv J-uly 11s;

"Improvements in Floor-Polishing Machines,

of which the following is aspecification.

This '7 invention relates to certain new and useful improvements in rfio-or :polishing: machines of "that @type employing an endless longitudinally arranged polishing belt which passes around suitable rollers jour naledi-n a wheelediframezhavinga guiding handle. 7

The-primary object of the inventionvisto generally improve and simplify floor polishing machines of the above "kind wherebythe same: may meet with :all 1' the A requirements for a successful commercial use. V

Another objectisto provide a simple and improved construction wherein the polishing belt is driven' by a motor-for assisting in the travel of themachine over the floor, and wherein-simple :an'd effectiveimeans are provided "for 'maintaining the polishing belt tight. n

Other objects will appear as the nature of the invention isbetter understood, andthe same consists in the novel form, combination and arrangement of parts hereinafter more fully described,shown in the accompanying drawings, and claimed. 7

In the drawings, wherein like reference characters indicate corresponding *parts throughout the several views, I a

Figure :1 is aiside elevation-a1 viewof a polishing machine constructed :in accordancefwith the present invention,

' Figure 2 is a top plan view of the device shown in Figure 1, with the-polishing belt removed, V

Figure 3 is a front elevational view of the device shown in Figure 2, and

Figure 4 is an enlarged fragmentary View partly in section and partly in elevation and showing the preferred form of anti-friction bearing employed for the rollers around which the polishing belt passes.

Referring more in detail to'the several views, the invention embodies a pair of spaced parallel longitudinal side frame bars 5 in the forward ends of which are suitably journaled the ends of the shaft of a roller 6 of relatively small diameter, upright frame members 7 being rigidly attached to the rear ends of the frame bars 5 and having bearadjusted position.

1923. "Seria1 No. '651';824.

ingsinth'e upperiends-thereof in which are j ournaled'the ends ofithe' shaft of a relatively' largeroller 8. Immediately in back of thezrollerb are a ,pair' of upstanding arms 9 having their lower-ends pivoted asat 10 to the frame bars 5 for longitudinal swinging movement, and the ends of the shaft of another small roller 11 are suitably journaled'in' the upper-ends of these arms 9. suitable ='polishi:ngbelt 12 of endless form passes around the rollers6y8 and '11, and

this belt is maintained in :tight condition'by swinging the roller 11 forwardly and maintaiining it'in such position by means of rearwardly inclined links 13 which have their upper forward ends'pivoted'as at late :the armsz9beneath the roller ll andwhich have their lower-ends adjustably connected as at 15' to the side frame bars 15. The: adjustable connection 15 f preferably embodies bolts extending throughthe arms 13 andthrough longitudinal elongatedslots 16 in the frame bars-'5, whereby the lower ends'of the links 13"may be moved longitudinally of the frame bars andzelfectively'clamped'in any desired The frameibars 5 are provided with four outwardly "projecting j stub shafts upon which suitable supporting wheels 17 are journaled, i the diameter of these supporting wheels 17 bein'gr such :asto: support the frame bars :5 :atthe required elevation above the floor'soithat'the nap 0f thepolishing' belt 12 willengage-the surface of thefloor with: sufficient pressure. V A suitable handle 1 8 isj-provided at the rear of the ma'chinje including :a bifurcated inner end portion, the arms of which are respectively: attached as at 1'9 to "the upright lframe member-s' 7 fben'eath the bearings of the rollerl-8. "The co'nn'ections'19 are pivotal ones so that-the handle 18 may swing verti- Cally to the desired height as required for the particular person operating the ma chine. c a

The width of the belt 12 is" substantially equal to the length of the'rollers 6, 8 and 11, and thelatter extend substantially entirely across the space between the side frame bars 5. These frame bars 5 are connected intermediate their ends by means of a platform 20 which is rigidly attached thereon, and a belt 23 passes around this pulley 22 and also around the roller 8, a groove 24 being provided in the periphery of the roller 8 in which the belt 23 is positioned beneath the polishing beltlQ. By means of this construction, the belt 12 is motor driven for assisting in the travel of the machine over the floor, in a simple and practical manner.

As shown in Figure 4, the members which support the ends of the'roller shafts are provided with suitable openings in which anti-friction bearings are mounted. These bearings preferably include inner raceways 25 fixed upon the adjacent shaftend 26 and associated with an outer raceway 27 which is in the form of a flanged bushing. the flange of which engages one face of the supporting member, and the other end of which is screw threaded to receive a. screw ring 28 whereby the outer raceway is effectively clamped to the supporting member. The bearings 29 are disposed between the raceways in a well known manner.

The construction and operation of the invention will be readily understood from the foregoing description, and it is to be understood that minor changes may be made without departing from the spirit and scope of the invention as claimed.

What I claim as new is:

1. In a floor polishing machine of the class described, a pair of parallel spaced side frame bars, a roller having a shaft with its ends journaled in the forward ends of the side frame bars, upstanding frame members rigidwith the rear end of said frame bars, a second relatively large roller having ashaft with the ends of the same journaled in the upper endsof said frame members, a pair of'upst'anding arms having their lower ends pivoted to the forward portion of the side -frame bars directly rearwardly of the first named, roller, for movement longitudinally of themachine, a roller having a shaft with itsends ournaled in the upper ends of said. arms, a motor, a platform upon which said motor is mounted rigidly connecting the intermediate portions of the side frame bars, a polishing belt passing around the rollers above and below said motor, means operatively connecting the second named roller and the motor for driving said polishing belt, means associated with said pivoted arms and with the side frame bars for adjusting said arms in any desired swung position for maintaining the polishing belt tight, and relative small supporting wheels carried by said side frame bars.

2. In a floor polishing machine of the class described, a pair of parallel spaced side frame bars, a roller having a shaft with its ends journaled in the forward ends of the side frame bars, upstanding frame members rigid with the rear end of said frame bars, a second relatively large roller having a shaft with the ends of the same journaled in the. upper ends of said frame members, a pair of upstanding arms having their lower ends pivoted to the forward portion of the side frame bars directly rearwardly of the first named roller, for movement longitudinally of the machine, a roller having a shaft with itsends journaled in the upper ends of said arms, a motor, a platform upon which said motor is mounted rigidly connecting the intermediate portions of the side frame bars, a polishing belt passing around the rollers above and below said motor, means operatively connecting the second named roller and the motor for driving said polishing, belt, means associated with said pivoted arms and with the side frame bars for adjusting said arms in any desired swung position for maintaining the polishing belt tight, and relative small supporting wheels carried by said side frame bars, the means for adjusting the swinging arms including rearwardly inclined links pivoted to the upper portions of the arms, and bolts attaching the lower ends of the links to the side frame bars, said side frame bars having longitudinal elongated slots in which said bolts are movable.

In testimony whereof I affix my signature/ BERNARD HUBER.