US1682013A

US1682013A - Sanding machine

Info

Publication number: US1682013A
Application number: US109476A
Authority: US
Inventors: John B Leonard
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-05-17
Filing date: 1926-05-17
Publication date: 1928-08-28
Anticipated expiration: 1945-08-28

Description

-Aug. 28, 1928.

' J. B. LEONARD smnme means 6 2 9 l 1 w u d e l i F I INVENTOR.

(lo/221B. Leonard ATTORNEY.

4 5a 60 ii Aug.

J. -B. LEONARD SANDING MACHINE Filed May 17, 1926 3 Sheets-Sheet 2 l llu J4,

INVENNR. Jo/urB. Leonard.

-J. B LEONARD Aug. 28, 1928.-

SANDING MACHINE Filed May 17., 1926 3 Sheets-Sheet 3 INVENTOR. (Zvfin .3. Leonard.

ll x nm ATTORNE Patented Aug. 28, 1928.

UNITED STATES JOHN B. LEONARD, OF DETROIT, MICHIGAN.

SANDING MACHINE.

Application filed Kay 17, 1928. Serial No. 109,476.

My invention relates to a. new and useful mprovement in a machine used for sandmg floors or other similar surfaces. With the san machines as commonly used conslderable ust is produced in the. room in which the sanding is taking place because of the material which has been loosened by the abrading member being thrown into the air.

The present invention has as its object the provision of a sanding machine of this class in which the presence of dust in the room ma be eliminated.

other object of the present invention l5 1s the provision in combination with a sanding machine of this class of a vacuum or suction mechanism whereby the loosened material may be quickly and easily drawn into a container by the suction mechanism. Another object of the invention is the pro- Vision of a rotatable member having the abrasive material mounted in such a manner that it may be easily and quickly removed and tightened on the drum of the rotatable member to any desired degree of tautness.

Another object of the present invention is the provision of a device of this class in a compact and durable form and to this end there is provided a casing in which the fan and rotatable abrading member are mounted having the nozzle proJectin'g outwardly from the lower end of the casing.

Other objects will appear hereinafter.

The invention consists in the combination and arrangement of parts hereinafter described and claimed.

The invention will be best understood from a description to the accompanying drawings which form a part of this specification and in which,

Fig. 1 is a side elevational view of the invention.

Fig. 2 is a top plan view of the invention.

Fig. 3 is a fra entary sectional view taken on substantia y line 3--3 of Fig. 4.

Fig. 4 is a sectional view taken on. substantially line 44' of Fig. 3.

Fig. 5 is a perspective view of one of the casing sections used in the invention.

Fig. 6 is a side elevational view of the drum used in the invention showing parts in section and parts broken away.

Fi 7 is a sectional view taken on substantially line 77 of Fig. 6.

Fig. 8 is a sectional view stantially line 8-8 of Fig. 7.

The casing used in the invention is made from a pair of sections similarly constructed, one of these sections being quite clearly shown in Fig. 5 and the other section being similarly constructed with the evident reversal of parts, so that it is believed the structure of both sections will be evident from a description of one section with such other parts as may be pointed out.

The casing comprises a top wall 14, integral with which is the rear wall 15, the side Wall 16, this side wall having the forwardly extending portion 17. The rear wall 15 curves as is shown at 18 and forms the base 19. The casing is provided with a chamber 20 communicating through the opening 21 and the passage 22 with the nozzle 23 which is formed with the base 19 and the outwardly projecting tongue 24 which proj ects from the partition wall 25. The chamber 20 communicates through the conduit 26 with the neck 27 in which is positioned the tubular conduit 28, communicating through the nipple 29 with a dust bag 30. Formed in the casing is a chamber 31 which communicates with the nozzle 23 and by means of the conduit 32 with the neck 27. Journalled in the bearings 33 and 34 mounted in plates 33 and 34 respectively which are suitably secured to the side walls 16 and 16' of the housing is a shaft 35, upon which is fixedly mounted in the chamber 20 a rotatable fan 36 and in the chamber 31 a rotatable fan 37. In the

forward extensions

17 and 17 of the side walls are mounted

bearings

38 and 39 in which is suitably journalled a shaft 40, upon which is fixedly mounted by suitable set screws 40 and 40 a drum 41. To properly seal the drum chamber are felt

washers

38 and 39 intermedially positioned between

bearings

39 and 38 and the hubs of the drum. .Covering .the periphery of the drum and suitably "secured 100 thereto by screws or other fastening means is a layer of felt or other cushioning material 42. The drum is as shown longitudinally split as at 43, this slot formed by splitting the drum 41 extending spirally of the 105 drum. A head 44 is mounte in one end of the drum, this drum being formed cupshaped and the slot 43 being cut downwardly into the base 45' of the drum. Mounted taken on subrotatably in bosses 46 and 47 on the inner 1w surface of the drum are

rollers

48 and 49 in close proximity to each other. A layer of sand paper 50, emery cloth or other abrasive grinding or cutting material, is positioned about the periphery of the drum, its ends 50' and 50" being projected inwardly of the drum and engaged by the

rollers

48 and 49. It is evident that upon a rotation of one of the rollers 48 or 49 a drawing inwardl of the ends of the abrasive covering 50 will be effected to draw it tautly about the periphery of the drum. Formed integral and extending longitudinally interiorly of the drum is a counterbalancing boss 41',

having an opening 41" adapted to receive a filling 41" which may be of lead or any other suitable metal to balance the drum on its axis. Mounted on the top 14 of the casing is a motor 51 connected bv a silent chain 52 to a ear wheel 53 fixedly mounted upon the shafl 40, so that when the electric motor is operated it will serve to rotate the drum' 41. This motor 51 also is utilized to drive the shaft 35 the connection being made by means of the belting 54. Formed integral with each section of the casing is a knuckle 55 in which is journalled the axle 56 upon which the castors 57 are supported.

A knuckle 58 is formed in the top wall 14 of each section of the housing, and projected through this knuckle 58 is a shaft 59 which also is projected through

cars

60 and 61 of the front shield 62 which extends over and forwardly of the drum 41. Depending from this cover shield 62 at the front thereof is a strip 63 and at one end the strip 64 and hinge ly connected to the bottom 19 rearwardly of the drum 41 is a strip 65, all of which are preferably made of felt. These strips depending from the forward end of the frame or housing serve to remove in advance of the machine foreign articles which may be present on the surface to be sanded. It will be noted that the forwardly projecting portion 17 is provided with ahead or outwardly projecting flange 66 (Fig. 5 and Fig. 4), this fiangeor head 66 engaging the outer surface of the side walls 67 and 68 of the cover shield.

The

shafts

59 and 56 serve to bind the two sections of the casing together in the position shown in Fig. 4 as does likewise thebase of the motor 51 and the flange 70 of the base 27 of the neck 27.

In operation the operator may use the conduit 28 as a handle, a suitable hand hold 72 being mounted thereon. Mounted on the handle 28 is a control switch 71, used to control the electric current from its source, through the insulating cable 71' to the motor 31. The device may then be propelled over the floor, the rotating drum with its covering of abrasive material effecting the anding and polishing desired. The formmllv projecting

side walls

17 and 17 of the casing are suitably reinforced by the ribs 73 so that in the sanding operation when the device is being used these walls afford the strength desired. At the same time the fans are set into operation to effect a suction and the dust and other material removed from the floor or surface with which the drum has been brought into contact anters the nozzle and passes through the central passage 22 into either the chamber 31 or the chamber 20. From the chamber 20 it is then directed through the conduit 26 into the neck 27 and from the chamber 31 it is projected into the neck 27 through the conduit 32. The castors supporting the device are positioned in the most advantageous location for effecting the purposes desired and permitting the use of the machine for performing its functions. When desired the device may be rocked on its casters either forwardly or rearwardly so that the sanding device may be brought into very close position relatively to the side walls of a room. This feature of the invention makes it most efiicient as the floor may besanded or 21- ished along its edges closer to the walls 1 n is now possible with known devices.

It is believed obvious that the structure is one which is compact, easily trans orted from place to place and easily operate The opera-tion is a sanitaryone for the operator 7 wish to limit myself to the precise form of structure shown but desire to avail myself of such variations and modifications as may come within the scope of the appended claims.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. A sanding machine of the class described, comprising: a housing formed from a pair of similar sections placed side to side, each of said sections having a chamber formed therein and communicating with an inlet passage formed partly in each of said sections at the engaging faces, and communicating with an outlet passage formed partly by each of said sections at the communiion eating faces; and a fan mounted in'each of chambers; and means for binding said sections in engagement with each other.

3. A sanding machine of the class described, comprising: a housing formed from a pair of similar sections placed side by side, each of said sections having a chamber formed therein and communicating With an inlet passage formed partly in each of said sections at the engaging faces, and communicating with an outlet passage formed partly by each of said sections at the communicating faces; a fan mounted in each of said chambers; means for binding said sections in engagement with each other; a motor for driving said fans; and a base on said motor secured to the upper face of each of said sectlons and servlng as addltlonal means for retaining said sections in close relation to each other.

4. A sanding machine of the class described, comprising: a sectional housing; a plurality of fans mounted in said housing; a nozzle in said housing, said housing having a passage leading from said nozzle and provided with branches leading to each of said fans and communicating at the rear of said housing with an outlet passage.

In testimony whereof I have signed the JOHN B. LEONARD.

foregoing.