USRE12681E - Territory - Google Patents

Description

I REISS-UBD AUG. 20, 1907.

A. T. SPENGB, s. B. ZIMMER & m1.- PRUGH. FLOOR SURFAGER, CLEANER, AND POLISHBR.

APPLICATION I-ILED APR. B, 1905.

2 BHEETS-BHEET 1.

' No. 12,68 1; REI'SSUED AUG. 20, 1907.

A. T. SPENOB, s. B. ZIMMER & J. H. PRUGH. FLOOR SURFAOBR, CLEANER, AND POLISHBR.

APPLICATION FILED AlLB. 1905.

2 SHEETS-SHEET 2.

A Witness TE STATES P TENT OFFICE.

AARON T. season; or 'ALAMEDA, AND SAMUEL B. ZIMMER AND JOHN H. PRUGH, OF OAK ND, CALIFORNIA, ASSIGNORS TO AMERICAN FLOOR SURFAOING MACHINE oo. A CORPORATION OF ARIZONA TERRITORY VJFVIYIOOR SURFAGER, CLEANER, AND POLISHER.

Specification of Reissued Letters Patent.

Reissued Aug. 20, 1907.

Original No. 728,423,da.ted'Xay"19, 1903, Serial No. 95,336. Application for reissue filed April 8, 1905. Serial No. 254,613.

To all whom it may concern:

Be it known that we, AARON TFSPENCE, of Alameda, and SAMUELB. Zriurnn and JOHN H. PRUGH, of Oakland, all in the county of Alameda. and State of California, citizens of the United States, have invented new and useful Improvements in Floor Surfacers, Cleaners, and Polishers," of which the following is a specification. v

The object of our invention is to provide an improved machine for surfacing or cleaning floors of wood of every kindyas well as grinding or polishing those of mosaic, marble, or any composition. I v l I Our invention consists of certain features of construction and combination of parts, which are hereinafter described and particularlyclaimed.

In,the accompanying drawings, Figure l is a side view of the machine. Fig. 2 represents the rear end of the same. Fig. dis a view of the machine below the table hereinafter mentioned looking down. Fig. is a longitudinal section of the same on line land 2 of Fig. 3. Fig. 5 is a view of saidtable, showing parts of the machine and the place where the operator of the sameshouldstand, designated as Z. Fig. 6 is a transverse section of the main carriage wheels and pa ts of the mechanism for the forward and rearward move rn nt of the machine. Fig. 7 is a vertical section of parts of the device for raising the rollers hereinafter mentioned. Fig. S is an isometrical view of the device for raising'and lowering the rollers and ;connections.

Referring to the drawings, A represents a lever to apply power for the adjustment of the rollers herci'rr after mentioned and' to impel the machine forward or backward, as may be desired. r

A indicates the position of the lever when the machino is at rest andithe rollers are above the floor, and A its position when said machine is moving'backward and the rollers are in contact with the floor.-

B represents a partial view of an electric motor, which may be oiany suitable type giving sufficient power to' run the machine. 1

(3 represents rollers to be? covered with sandpaper for cleaning or surfacing wood floors of evcrykind, or with felt, or any other suitable materialfor polishing floors, or with'cmery or em'ery cloth for grinding and polishing' mosaic, marble, or compositionfloors. The position ofthelcver whenthe inachineismoving forward is as appears in Fig. l of the drawings at A. I

' D rcprcsent's' -fthe main carriage wheels, which are eachlittcdorprovided"with a rubber'ban'd or tire to prevent detrimentof tl e'floofover which it moves. The front carriage wheels, which are shown at E, are

' likewise bound with rubber and by the turning of which to either side the steering of the machine is accomplished. F shows the propelling wheel or driver which works on shaft f, and by the sliding of thesame sufficiently eitherway on a pin, not shown, attached to said shaft, the same will engage friction-wheel G, which is driven by the'worm gearing on shafts g and b the operation of lever A causing the said engagement of said wheels within the depression between the two sections of said wheel F, the contact of said wheel G with one of said sections causing the forward movement of the machine and with the other its rearward movement.

p represents a curved plate the radius of whose curvature corresponds with the are described by lever A in its free action opposite thereto, such plate having slots, as shown. By the securing of said lever to said plate at a desired point within one of said slots through the tightening of nut 11 on boltthrough said slotand the release of catch attached to said lever sufficient leverage is obtained to force wheel G against one of the sec- "tions of wheel F to propel the machine either way,as .may be desired.

Arms 1', carrying rollers C and having boxes at the ends for shafts d and e, are shown in Fig. 1. The same are also supported and move in boxes in at a point approximate tlie center. The said arms 1' maybe adjusted at their inner ends by Clasps t, as shown, which clasps by the movement of shaft S may be forced up or down, as desired. This shaft having arms orlevers at each end will raise or lower. the clasps when lever A is moved either way, and thus also raise or lower the inner ends of arms r, resulting in the depression or elevation of the outer ends of said arms and of the rollers there supported.

InFig. 8 the device for raising and lowering such. rollers is particularly shown. Lever Ais shown pivotas shown, and is secured by a set screw. The turning of shaft S turns the cranks at each end of shaft S, said cranksbeing fastened to shaft S by set screws, asshown. The said'cranks are secured to clasps't, the inner, ends of the arms 1- penetrating said Clasps, as'described.

liy the operation of wheel 2 the machine maybe steered; Said wheel is attached to a shaft having at ions secured to the front carriage-wheels E.

The turning of wheel .1 either way causes the movement of shaft 7, thereby moving tie-bar 8 and subsequently directing the machine to the right or left, as may be desired.

L represents a lock-harwhich is pivoted to the curved bar b and which is securable in jaws or notches in the table above its place of connections The same is intended to be operated by pushing it into the jaws when the rollers are up, and they are thereby held in that position. ,Thereupon l or A may be worked either ways for applying the mechanism for propelling the machine forward or backward, as may be desired, and bar a will operate above the pulley the curved bar without actuating shaft S. The-said bar or shaft a works througha guide block (shown in Figs. 7 and 8) and which is secured to a cross tie-bar ,by screws.

Lock bar l, is preferably forced into the jaws or notch intended to receive it by pushing with the foot. Wheels D are fixed firmly on shaft with which it revolves. Thrusting wheel 1L is in contact with the propelling .wheel F when it is moved on shaft f in the direction desired. Through the operation of lever A the said wheel n is turnable on the spindle N, having the curvature shown at m in Fig. 4, and by'the turning of which wheel F is moved, as mentioned, and the upper end of whichfis secured to rod 0, running to and connected with lever A, by whicltit is operated.

z designates tie-rods to hold the frame of the machine together, and 1 an iron brace to support the upper frame.

a, b, c, d, and e represent shafts which run transversely to the machine, (I and 2 running through rollers G and are turnable by pulleys 4 and 5 respectively, which are propelled by the revolution of shafts b and c and pulleys 2 and- 3 as shown. a is the shaft passing through the motor B and has pulley l, which drives pulley 6 on shaft b and which in turn drives cogwheel h, the latter driving cog-wheel 'i, which turns shaft 0. Shaft b by means of worrngearlng drives shaft 9, having paper friction wheel G, operating as hereinbefore set forth. At the ends of shaft f the main carriage wheels D turn therewith for the propulsion of the machine in the direction desired.

In each roller 6,1 represents a slot, which has a clamp to secure the covering of the roller by screwing down the same, and as is a rubber bumper to protect the walls of the room in which the machihe may run from injury in contact therewith.

It may be necessary to add that pulleys 1, 2, 3, 4, 5 and 6 are driven by belts, as appears in the drawings.

The machine is so constructed as to be able to run close to the walls of the room in which the work required is intended to be done, and the direction of its operation can b c' easily changed by the use of the steering device hereinbefore mentioned. The rollers G run in opposite directions, and consequently will not cause the movement of the machine; but the same must be effected by the devices hereinbefore mentioned as employed therein. Upon the motion of the machine bewhen the motor is still in operation and the said rollers and the machine are not moving.

the floor in case of meeting obstructions thereon; also,

to cause arms 1' to bear tightlyagainst bolts u.

Having thus described our invention, what we claim and desire to secure by Letters Patent is- 1. In a floor sun-racer, cleaner and pollsher the combination with rollers covered with material for acting upon ,floors, centrally-pivoted arms adapted to hold said rollers and to raise and lower them from the floory sfii-ingsand screws for limiting the play of the inner ends of said arms, rubber-bound carriage wheels, a lever having at its lower end a pivoted arm working through a guide-block and operating upon a curved bar and connections whereby a clasp coverlng'the inner ends of the arms attached to said rollers may be depressed or allowed torise so as to raise or lower said rollers, a rod jointed to said curved bar and securable in jaws for holding up said rollers, n

' ot a catch attached thereto, and means for steering said machine substantially as shown and described.-

2. In a floor surfacer, cleaner and pollsher the combination with rollers covered with material for actlng'upon floors, centrally pivoted arms adapted to hold sald'rollers and to raise and lower them from the floor, springs and screws for limiting the play of the inner ends of said arms, rubber-bound clrriage-wheels, a lever having at its lower end a pivoted arm working through a guide block and operating upon a curved bar and connections whereby a clasp covering the Inner ends of the arms attached to said rollers may be depressed or allowed 'to rise so as to raise or lower said rollers, 1 rod jointed to said curved bar and securable in jaws for holding up said rollers. a propelling wheel slldable upon the shaft with which It turns and having two sections adapted to be alternately engaged with a friction-wheel for the forward or rearward movement oLthe machine, a thrusting-wheel turnable r a vertical and curved shaft for the lateral movemeat of sald propelllng wheel on the shaft on which it is mounted, a curved platehavlng slots with bolts securable therein whereby said lever may be held firmly by means of a catch attached thereto, and a wheel turning a horizontal shaft having worm-gearing operating a vertical shaft. the same being connected by an arm to a cross tie-bar, and said bar havlngnrms in connection with plnlons secured to the front carriage-wheels oi the machine substantially as shown and described.

3. In a floor surfacer, cleaner and pollsher the combination with a table or platform supported on wheels and movable thereon, rollers covered with material for acting upon floors, centrally pivoted arms supporting said rollers on shafts at their outer ends turnable therewlth; means for limiting the play of the Inner ends ,0! said arms, a lever havlng at its lower end a pivoted arm working through a guide block and operating upon a curved bar and connections whereby a clasp cover-lng -the inner ends of said arms may be depressed or allowed to rise so as to.ralse or lower said rollers, rod jointed to a curved bar and secnrable ln jaws for holding up said rollers, a,

propellng wheel slldable on a shattwlth which it turns and having two sections adapted to be alternately on' gaged with a frlctldn wheel for the forward and rearward movement of the machine, a thrustlngwheel-turnable on 'a vertical and curved shaft for the lateral movement of said propelling-wheel on the shaft on which it is mount, means for holding firmly In a desired position a lever for applying power and mechanism to move said machine and a wheel turning a horizontal shaft having wormgearing operating a vertical shaft, the same being connected by an arm to a cross tie-bar and said bar having arms in connection with pinions secured to the front supporting wheels of the machine substantially as shown and described.

4. Ina floor surfacer, cleaner and polisher, the combination with transverse rollers covered with material for acting upon floors connected to a frame mounted on rubber-bound carrying-wheels, centrally pivoted arms supporting said rollers at.their outer ends turnable thereon, a clasp inclosing the inner ends of said arms in connection with springs and bolts for controlling the movement thereof, a lever having an attachment for securing the same to an adjustable bolt securahle in a slotted curved plate attached to said frame, a propelling wheel slidable on the shaft with which it turns and having two sections adapted to be alternately engaged with a friction-wheel for the forward 'or rearward movement of the machine, a thrustingwheel turning on a vertical and curved shaft for the lengthwise movement of said wheel on the shaft on which it is mounted, means for turning said shaft, and a wheel turning a horizontal shaft having worm-gearing operating a vertical shaft, the same being connected by an arm to a cross tie-bar and said bar having arms in connection with piuions secured to the front supporting wheels of the machine and means for the movement of said mechanism substantially as sh'own and specified and for the purpose described.

5. In a door surfacer, cleaner and polisher the combination with a frame and carrylngwlieels, rollers covered with material for acting upon floors, means for securing said material to said rollers, centrally-pivoted arms adapted to hold said rollers and to raise and lower them from the floor, springs and screws for limiting the play of the inner ends of said arms, a lever having at its lower end a pivoted arm working through a guideblock and operating upon a curved bar and connections whereby a clasp covering the inner ends of said arms attached to said rollers may be depressed or allowed to rise so as to raise or lower said rollers, a rod jointed to said curved bar for holding up said rollers. a propelling-wheel siidable upon the shaft with which it turns and means for changing the direction of its revolution. a curved plate having slots with bolts sccurable therein whereby said lever may be held firmly by means of a catch at tached thereto, and a wheel turning a horizontal shaft having worm-gearing operating a vertical shaft, the same being connected by an arm to a cross tie bar and said bar having arms in connection with pinious secured to the front carrying wheels of the machine for steering the Sallie, substantially as shown and described.

6. In a floor surfacer, cleaner and polisber. the combi' nation of the following. instrumentalities, viz: a franie mounted on carrying-wheels, centrally-pivoted arms ottached thereto, the outer ends thereof supporting rollers covered with material for acting upon floors, mcnus for limiting the play of the inner ends of said arms. a lcvcr.haviu;.'; at its lower end a pivoted arm workingthrough a guide block and operating upon a curved bar and connections whereby a clasp covering; the inner ends of the said arms attached to said rollers may be doprcsscd or allowed to rise so as to raise or lower said rollll'S, means for holding; up said rollers at the will oi the operator, a propelling wheel slidable upon tho shaft with which it turns and having two sections cach adapted to be so cna'aged with a frictiou-wheel as to compel the forward or rearward movement of the machine. means for the lengthwise movement of said propellingovhcel on the shaft on which it is mounted, a curved blade having: slots with bolts securable therein whereby said levcr may be held firmly by means of a catch attached thereto, and moans for steering said machine, substantially as shown and described.

7 in a lloor surlacor. cleaner and polisher the combinalion of the following instrumcntalities, viz: a frame mounted on carrying wheels. centrally pivoted arms atlochcd lherelo, the outer ends thereof supporting rollers turning thereon, said rollers being covered with material for acting uponfioors. springs and screws for limiting the play of the inner ends of said arms, a lever having at its lower end a pivoted arm working through a guide-block and operating upon a curved bar-and connections whereby a clasp covering the inner ends of said armsattached to said rollers may be depressed or ailowed to rise so as to raise or'lowcr said rollers, a'rod jointed to said curved bar and securable in jaws for holding up said rollers, 11 propelling wheel slidable upon the shaft with which it turns. and means fol-changing the direction of its revolotion. a curved plate having slots with bolts sec'urable therein. whereby said lever may be held firmly by means of a catch attached thereto, and a wheel turning, a horizontal shaft having wornrgearing operating a vertical shaft, the same being connected by an arm to a cross tie bar and said bar having arms in connection with pinions secured to the front carrying-wheels of the machine for steering the some, substantially as shown and described.

R. A door surfacing: machine embodying a motor, trac tion wheels supporting the machine and driven by the |uotor for ailvanmup.- the machine over the floor and a plurality of motor driven abradina" rollers simultaneously opcratiny; on the floor surface and rotated in opposite directions whereby the i'ractive force of one is offset by lhat of the other to neutralize the traclivc influence of the abrad iug rollers leaving the machine freo to move under the influence of the traction wheels.

9. A door surfacing machine embodying a motor, traction wheels slipportin the machine and driven by 1he motor for advancing the machine on the floor, reversing gcariug' for reversing the direction of rotation of the traction wheels and direction of movement of the machine and a plurality of motor driven abradiua' rollers rotated in op posiio directions to each other whereby the tractivo force of one is oifset by that of the other to ncutralizc the traciivo iuilueuce of tho. abradina' rollers when thc machine is moving in either direction and leaving the machine free to move under the influence of the traction \vhccls.

1U. in o iioor surlacing: machine the combination with the machine frame and means for supporting said frame on the lloor surface. of drivcn abrading rollcrs bodily movohlc'on the frame toward and from the floor surface. lover mochauism opcraicd by the attendant for movingsaid rollers bodily and interposed yielding members through which the prcssurc is applied for depressing said rollers,

ll. In a floor surfacing machiuc. the combination of a upporting framc mountcrl on whccls. a motor on the frame. suitable transmission mechanism for driving said \vhcols from said motor, on abradb g roller carried by the frame movable toward and from tho surface to be operated on. connections with the motor for revolving the rolicr. device acting on the transmission mechanism to ploco the latter in opcraiivv a'o-ohcad position. or in a reversed position. or in neutral inopcrajivc position, and moous-wbcroby on thc operation of said device to place the trausniission mechanism in inoperative position. said :lbrading roller i :pii'oumlically placed in inoperative posil'ioll with :"spcct to the snrl'acc to be operated on.

ill. in lloor surfacing umchino, the combination of a vchiclc mounted on \vhccls. oppositely rotatable abradin: rollcrs on the vahiclc movzrblo towards and from the surl'nco to bo opcr. ml on. a motor on the Yohiclc to rotate the rolb-rs. and :1 uuilary dcvico for controlling the forward and backward movcuunls oi the vehicle and for raising: and lowcriug' said abradiua rollcrs.

iii. in a lloor surf: 'in: nlachiuc. lhc combination of a vchiclc mounted on wheels. :1 uon-compr iblc roller having: its axis arrauacrl horizontally and having' its surface cow-roll wilh sand p'npcr. a rochablc support. fulcrumcd on tho vohicliyfor said rollcr. moans for rotating the rollcr and a :levlcc controlling the movements ol the vchiclo and operative on said l'ocknblcsupport -lo raise the roller automatically on the stop c oi the vohich.

1-l. in a iloor surfacing machine, the combination of a selfpropclled whcolod vchlclo. couplorlmlauced rotary abradiny: rollers yieldinaly carried on said vehicle and mounted on horizontal axes and independently movable toward and from the surface to be acted on. moans for re volving said rollers and for driving the machine, a device K for controlling the forward and backward movements of said vehicle, and means controlled by said controlling device for raising saicl rollers into inoperative position automatically on the stoppage of the vehicle.

15. In a floor surfacing machine the combination of the following instrumentalities, to wit: a frame, supporting wheels therefor, an nbrading roller mounted on a longitudinal axis carried by the frame to move up and down, motor mechanism for propelling the machine and for rotating the roller and a lever member controlling the travel of the machine over the floor and also controlling the raising and lower-ins of the roller.

. In witness whereot we have hereunto set our hands in the presence of two subscribing witnesses.

AARON T. SPENCE. SAML. B. ZIMMER. JOHN Hi PRUGH.

Witnesses to Spence and Zinnner:

A. M. KERSTAN, 'CLAnnNcn M; REED.

Witnesses to Prngh F. F. OHMERT, JOHN R. HARRISON.

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