US1542667A - Floor-surfacing machine - Google Patents

Description

June 16, 1925. 1,542,667

A'. B. CHRISTENSEN ET AL FLOOR SURFACING MACHINE 7 Filed Oct. 27- 19 4 2 Sheets-Sheet 1 INVENTORS ATTORNEY June 16, 1925 1 1,542,667 A. B. CHRISTENSEN ET AL FLOOR SURFACING MACHINE Filed Oct. 27- 1924 2 Sheets-Sheet 2 NNNNNN O R Patented June 16, 1925.

UNITED STATES 1,542,667 PATENT OFFICE.

AXEL B. cn'msrnnsnn AND ANDREAS IB. ANDREASS'EN, or PORT WASHINGTON, NEW YORK.

FLOOR-SURFACING E.

Application filed October 27, 1924. Serial No. 746,127.

To all whom it may concern:

Be it known that we, AxnL B. CHRISTEN- SEN and ANDREAS B. ANDREAssnN, citizens of the United States, residing at Port Washington, in the county of Nassau and State of New York, have invented new and useful Improvements in Floor-Surfacing Machines, of which the following is a specification.

This invention relates to improvements in floor surfacin machines and to that type adapted for finishing hard and soft wood floors, as well as stone, marble and the like.

The primary object of this invention is to provide a floor surfacing machine that will not only adequately sand paper floors but one that can be converted into a polishing machine for the purpose of polishing the floors after the sand papering process has been completed.

A further object is to provide a floor surfacing machine that is capableof operating upon that portion of floors that are arranged adjacent base boards, walls and the like, .as well as in corners and other difiicult places to get to that ordinarily have to be finished by hand.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a side elevationof the machine forming the subject matter of the present invention.

Figure 2-is a top plan view thereof.

- Figure 3 is a longitudinal sectional view taken through the machine.

Figure 4 is a sectional view taken on line H of Figure 1.

Figure 5 is an enlarged sectional view taken through a fragmentary portion of the sand paper belt shown applied to the machine in Figure 3.

. Referring to the drawings in detail a supporting platform is indicated by the reference numeral 1 and depending from said platform are apertured ears 2 for receiving axles 3 to which are rotatably mounted supporting wheels 4 whereby the machine can be conveniently moved. Arranged upon one end of the platform there is an electric motor 5 which supplies power for the machine. The motor is of the conventional type and fixed to the drive shaft thereof is a sprocket wheel 6. Brackets 7 rise from adjacent the opposite end of the platform and have their upper ends formed with bearlngs 8 to receive a shaft 9 which have secured intermediate its ends a sprocket wheel 10. An endless chain 11 is trained over the sprocket wheels 6 and 10 to transmlt power from the motor to the shaft 9. Disk wheels 12 and'13 are keyed to the shaft 9 and being arranged at each end thereof as shown and secured to each of the disk wheels are ecoentrically mounted wheels 14 and 15 respectively which are spaced from the disk wheels by spaced bearings 16 fixed upon bolts 17 passing through the disk wheels and being provided with nuts 18 for retaining the respective wheels secured together in operative position. The eccentrically mounted wheels 14 and 15 extend substantially in an opposite direction from their securing points, and this is done with a view of causing the desired operation of a portion of the machine which will be presently described.

The polishing and sanding unit which is associated with the above associated elements includes a block 19 to which is secured side plates 20. The side plates 20 have their rear ends extended beyond the rear end of the block and terminate in diverging arms 21 and 22 provided with openings formed in their outer ends. The arms 21 rise at a rearward inclination from the side plates and are pivotally secured adjacent the ends of a shaft 23 which passes through and has keyed thereto a roller 24. Secured to the ends of the shaft 23 are disk wheels 25 and 26 which pivotall receive one end of connecting rods 27 an 28 while the opposite ends of these rods are pivotally secured adjacent the edge of the ecoentrically mounted wheels 14 and 15 as clearly shown in Figure 2 of the drawings. The arms 22 incline downwardly from the side plates and pivotally receive one end of connecting rods 29 and 30, and the opposite ends of these last mentioned connecting rods are secured to the bolts 17 between the spaced bearings 16 as shown in Figure 4 of the drawings.

From the above description and the drawings, it will be'readily apparent that the polishing and sanding unit is mountedfor reciprocatory movement. The side plates 20 extend beyond the blocks 19 and brldglng the extenslons at appropriate places thereon are shafts 39 two of which are disposed adjacent the front of the block and the remaining one at the lower rear end thereof. The block is provided with transversely dlsposed semi-circular cross sectional grooves to accommodate rollers 32 which are mounted upon the shafts 31 as shown.

Trained over the rollers 32 and 24 respectively is an endless belt 33 which is provided with a reinforcing roller-engag ng portion 34 and an outer portion 35 whlch is in the form of sand paper. The roller 24 being rotated by power derived through the motor will cause the belt 33 to revolve as will be readily apparent.

It should be noted that the under surface of the block 19 is flat and the portion of the belt which extends across this surface will engage the fioor for operation thereon. Of course a polishing belt may be substituted for the sand belt, not shown, without deviating from the spirit of the invention.

As above stated the block is given a reciprocatory movement and by the belt revolving thereon it will be obvious that a floor can be prepared as desired in an expeditious manner.

A handle 40 is secured to the rear end of the platform whereby the machine can be readily moved from place to place during the process of finishing the floor or conveniently moved to predetermined localities.

It is thought from the foregoing description that the advantages and novel features of our invention will be readily apparent.

We desire it to be understood that we may make changes in the construction. and

in the combination and arrangement of the several arts, provided that such chan es fall wit in the scope of the appen ed claims.

What we claim is:

1. A machine of the character described comprising a wheel platform, a pair of spaced brackets risin from the platform, bearings formed on t e upper ends of said brackets, a shaft journaled in the brackets, a disk wheel keyed to each end of said shaft, an eccentrically mounted wheel secured to each of the dlsk wheels and extending therefrom in substantially opposite di-' rections, a floor surfacing unit arranged in advance of the platform, and connecting rods securing said floor surfacin unit to the eccentrically mounted wheels 1n a manner whereby the floor surfacing unit will be caused to reciprocate upon rotation of the eccentrically mounted wheels.

2. A machine of the character described comprising a wheel platform, rotatably mounted disk wheels arranged on said platform, eccentrically mounted wheels secured to the disk wheels, a bolt forming the securing means, spaced bearings surrounding the bolts and spacing the wheels, a connecting rod having one end fixed to the bolt between the bearings, a surfacing block, side plates secured thereto, and extending beyond the rear end thereof, diverging arms formed on the side plates and some of these arms pivotally receiving the opposite ends of the connecting rods, a shaft journaled in the remaining arms, disk wheels keyed to the ends of the shaft, connecting rods having their ends fixed to the eccentrically mounted wheels and last mentioned disk wheels respectively, a roller keyed to the shaft, and an endless belt trained around said roller and surfacing block respectively as and for the purpose specified.

In testimony whereof we afiix our signaures.

AXEL B. CHRISTENSEN. ANDREAS B. ANDREASSEN.

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