US1650035A

US1650035A - Polishing and cleaning machine

Info

Publication number: US1650035A
Application number: US743556A
Authority: US
Inventors: Peterson August
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-10-14
Filing date: 1924-10-14
Publication date: 1927-11-22
Anticipated expiration: 1944-11-22

Description

Nov. 22, 1927. 1,650,035

A. PETERSON POLISHING AND CLEANING MACHINE Filed Oct. 14. 1254 2 ShOQtS-Shfiit 1 x a" 3 55 g 4 l I 62 6! eq 67 E j 60 68 4 44 4 irx' 3 K I! I/ ,1

4D 55 75 64 65 72 66 INVENTOR.

.fi'zlgust pezezasazz BY 3 0M *1 6314 i A TTORNEYJ I NW.- 22, 1921. 1,650,035 v 4. PETERSON POLISHING AND CLEANING ucunua Filed Oct. 14. 1924 2 Sheets-Shoot 2 INVEN TOR. fiz gust Fezzrsozz ATTORNEY. l

Patented Nov. 22, 1927.

UNITED STATES AUGUST PETERSON, OF CLEVELAND, OHIO.

POLISHING AND CLEANING MACHINE.

Application filed October 14, 1924. Serial No. 743,556.

This invention relates to a polishing and cleaning machine. More particularly it comprises a portable device carrying a rotary member with a fixed lower face, one side of which is brought into contact with the work operated upon. The disc may itself be an abrading or polishing element but preferably separate means, such as wires,

ristles or emery cloth, are applied to the face of said disc and replaced whenever necessary.

Heretofore polishing machines of a portable character have been known but in many such devices the polishing elements make full and direct contact with the work operated on and exact control of the operation is somewhat diflicult.

The principal object of the present invention is to provide an improved type of polishing and cleaning machine and one wherein the operation of the machine may be accurately adjusted as desired. A further object of the invention is to provide an improved type of abrading or cleaning element and one which is readily replaceable. Another object of the invention isto provide a most simple form of wire brush abrading device for use in the polishing and cleaning machine. Other and further objects of-the invention will appear in the course of the following description. To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

The annexed drawings and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.-

In said annexed drawings Fig. 1 is a bottom plan View showing one form of the im roved polishing and cleaning machine em odying the invention; Fig. 2 IS a transverse sectional view taken along the line 2-2 shown in Fig. 1 looking in the direction of the arrows; Fig. 3 is a transverse sectional view similar to Fig. 2 but showing a modified form of rotating element; and Fig. 4 is an enlarged detail view taken along the line H shown in Fig. 2 looking in the direction of the arrows, showing the method of mounting the cutter pin abrading elements in position upon the disc.

As is clearly shown in the drawing the apparatus comprises a casing 1 of cylindrical form having a closed lower end 2 suitably apertured to provide a journal for the spindle 3 upon which the rotary member or disc 4 carrying the polishing or cleaning elements is mounted. At its inner end the spindle is provided with a gear 5. Said gear is shown as being integrally formed with said spindle and an axial counter bore 6 is provided to receive a bushing 7, within which one end of the drive shaft 8 of a motor 9 is adapted to be received. The motor may be driven by any suitable power, such as air or electric power. A small driving gear 11 is keyed to the motor shaft immediately above the gear of said spindle and through an intermediate reducing gear 12 serves to transmit power at a slower rate to the main spindle of the apparatus. The reducing gear 12 is carried upon a stub axle 13 mounted in the end wall of the casing which is provided with an enlar ement 14 at one side of the axial line thereof? The reducing gear is so plied with a suitable bushing 15 and is he d in position by means of a washer 16 and cotter pin 17 of conventional form. v

The central spindle is journaled in a bushing 21 and a thrust bearing is provided adjacent its lower end. Said thrust bearing comprises a pair of ball races 22, 23, within which ball bearings 24 are positioned. The

adjacent portion of the spindle is screwthreaded to receive a pair of adjusting nuts 25, 26, whereby any lost motion in the thrust hearing may be taken up. The lower end of the spindle is provided with a ke way within which a key 31 is adapted to t and hold against rotation the rotatable disc 4 which carries the polishing 0r abrading elements. The lower end 32 of the spindle is formed of reduced diameter and is screw-threaded to receive the locking nut 33 for the rotary member. An extension casing 34 is adapted to be secured to the end wall of the main casing l by means of a plurality of bolts 35 which connect the upper flange formed thereon with the circumferential portion of the lower end of the cylindrical casing. Said casing has an upper wall 36 which is centrally apertured to provide clearance for the thrust bearing heretofore described. The circumferential portion of said casing is provided with a downwardly extending flange 37 which forms a housing for the rotary member or polishing disc 4 of the apparatus. Said housing is provided with an enlarge- I other. Said lugs are provided with aligned apertures adapted to receive the upper end of a screw-threaded pin 43, the lower end of which is provided with a pair of rollers 44 carried on a transverse pin 40. A knurled adjustingnut 45 is adapted to be seated between the spaced lugs and engaged upon the upper screw-threaded end of the roller. Through the rotation of the knurled nut the roller may be adjusted, thepin being held stationary during this operation.

At points on opposite sides of the extension casing where the enlarged housing joins the cylindrical portion thereof, a pair of outwardly extending bosses 46 is provided. Said bosses are provided with apertures within which pins 47 are screw threadedlyengaged, said pins serving as supports for rollers 48.

The apparatus thus far describedcovers the mechanism for producing the rotary motion of the disc and holding the same in spaced relation with the surface to be operated on. The upper end of the casing has not been shown inthe drawing but Wlll be of a conventionalgform such as is commonly used in connection with portable abrading machines and electric tools of similar character.

As has been stated, various forms of polishing and cleaning elements may be used in connection with the apparatus but the two forms thereof shown in Figs. 2 and 3 have been found to be of particular effectiveness. In the form of construction shownin Fig. 2 the circumferential portion of the disc 4 which is of substantially even thickness and has a convex outer face and a concave inner face, is provided with a series of apertures 51 passing entirely through said disc and arranged preferably in radial rows 52, 53, the apertures in adjacent rows being staggered with respect to each other as is more clearly shown in Fig. 1. Within said apertures abrading elements 54 in the form of cotter pins are disposed, the eye 55 of each abrading element being preferably engaged by a wire 56 extending through an aperture 57 formed radially adjacent the upper surface of said disc in alignment with each of said radial rows of transverse openings. A cover plate 58 is preferably secured to the be received until opportunity is af- The lower por-- upper face of the disc by means of a series of screws 59.

Other means than the radial wires just described may be used to support the abrading elements. Thus thongs or flexible elements of other character may be threaded through the eyes of a -plurality of said elements and clamped against the upper face of said disc by means of the cover plate.

In the form of construction illustrated in Fig. 3 the disc 60 is provided with an enlarged inwardly extending hub 61 which is held to the spindle 3 by means of a key 62. The outer portion of said disc is provided with a countersunk recess 63 wherein the locking nut 64 holding the disc to the spindle may be received. Thus, the ential outer face 65.0f the disc rojects beond the locking nut and may e brought into contact with the surface to be operated upon. When constructed of proper material, the disc ittelf may be used as a polish-- ing or cleaning element, but as shown in the drawing the outer surface is covered with sheet abrading material 66 such as emery cloth or sand paper. Such sheet material may be clamped to the disc by means of a ring (37 fitting within a groove 68 formed on the upper surface of the disc, said ring being pressed against the edge of the material seated in said groove by means of a series of headed bolts 69. The sheet material adjacent the countersunk recess 63 is held in firm contact with the outer face of the disc by means of aring 71 pressed against said material by means of a series of screws 72. Said ring and screws are received within a shallow groove 73 surrounding the countersunk recess 63, said groove .being of suflicient depth to afford adequate.

clearance of the screw'heads beneath the working surface of the disc.

The operation of the device has alread. been indicated in part in connection with the description of the construction. The device is particularly suitable for use in polishing floors and when so utilized is rolled into proper position and the adjustable wheel is set to permit a light contact of one side of the working contacting element with the surface of the floor. The motor is then started and the machine is moved back and forth across the floor to be polished or abraded until the desired character of finish is produced.

The machine is by no means limited to use upon floors as it will also be found satisfactory for use upon various other types of work.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanismherein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

mounted below I therefore particularly point out and distinctly claim as my invention 1. A motor casing havin a closed lower end provided with a journa centrally there of, a vertical spindle mounted in said journal, a thrust ball-bearing for said spindle said journal, adjusting means for said bearing carried on said spindle, a polishing wheel carried on said spindle, a motor having a vertically disposed shaft, a bearing formed in the end of said spindle and adapted to receive the end of said motor shaft in axial alinement therewith, and reducing gear supported by said casing and en a ing the gears on said motor shaft and spin le for transmitting power from said motor shaft to said spindle and polishing wheel.

sion housing adjacent one side of said pol-' ishing wheel, providing a chamber for receiving abraded material.

3. An apparatus of the character described having in combination a casing, a motor enclosed in said casing and having a vertically positioned driving shaft, a spindle supported in said casing below said motor, a polishing wheel carried by said spindle, means for transmitting power from said motor to said spindle, an extension casing secured to the lower end of said motor casing and housing said polishing wheel, an enlargement provided in said extension housing adjacent one side of said polishing wheel, providing a chamber for receiving abraded material, and rollers mounted on said housing.

4. 'An apparatus of the character described havin in combination a casing, a motor enclose in said casing andhaving a vertically positioned driving shaft, a sp1n-,

dle supported in said casmg below said motor, a polishing wheel carried by said spindle, means for transmitting power from said motor to said spindle, an extension casing secured to the lower end of said motor casing and housing said polishing wheel, an enlargement provided in said extension housing adjacent one side of said polishin wheel, and removable slide cooperating wit 1 said enlargement to provide a chamber for receiving abraded material.

Signed by me this 11th day of October, 192

AUGUST PETERSON.