US1823774A

US1823774A - Grooving machine

Info

Publication number: US1823774A
Application number: US332923A
Authority: US
Inventors: Louis R Williams
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-01-16
Filing date: 1929-01-16
Publication date: 1931-09-15
Anticipated expiration: 1948-09-15

Description

Sept. 15, 1931. w s 1,823,774-

GROOVING MACHINE Filed Jan. 16. 1929 4 Sheets-Sheet l 26 Inventor:

Attorney Sept. 15, 1931. L. H; WILLIAMS GROOVING MACHINE Filed Jan. 16, .1929 4 Sheets-Sheet 2 Inventor Louis 7B. f Viiifams Fttof'neg Sept. 15, 1931. R. WILLIAMS 1,323,774

GROOVING MACHINE Filed Jan. 16'. 1929 4 Sheets-Sheet s IL lg 5% 5/ 1M '47 Z0 Z5 27 v v Inventor:

Lav/31E. iVi/ifams J" 55 .37 as 3% 36 -37 Sept. 15, 1931. I 1.. R. WILLIAMS 1,323,774

GROQVING MACHINE Filed Jan. 16, 1929 4 Sheets-Sheet 4 Inventor Luz/i5 Ji. Fi i/77km;

iittorneg Patented Sept. 15, 1931 LOUIS =R. WILLIAMS, F LOS'ANGELES, CALIFORNIA cntoovnve.v MACHINE Appl-icationfiled January 16, 1929. Serial No. 332,923.

My invention relates to and has for a purpose the provision of a simple, substantial and compactmachine by which a surface, such-as the surface of a monolithic cement slabor floor. for example, can, with the utmostease and dispatch,.be grooved in a manner to simulate tilingso that the appearance ofthe surface to the eye will be that'of a floor constructed of separate and distincttiles.

It is a, further purpose of my invention to provide a grooving machine of the above described character by which a groove of uniform depth-will be produced in a surface irrespective of inequalities or unevenness in the-contour of the surface so that such defects .WlllIlOt be detectable from an observaton of the grooves.

It is another purpose of my invention to provide a. groovingmachin'e whic-his adjustable with the utmost ease and. dispatch,-

to produce. grooves of different depths in a surface so that the tiled effect of the grooved surface will b'e-more or less -pronounced,-to conform in a predetermined proportion with the particular size of tiles represented, as well'as to conform or harmonize with the architectural scheme of a particular installation.

t is still another purpose of my invention to provide a grooving machine embodying a carriage for supporting a grooving element'for movement over a surface along a predetermined path, to cause the groov- 3 ing element to produce a groove in the surface, with mechanism by which the carriage and-grooving element can be elevated clear of the surface and the machine supported for movement from place to place, all in such manner as to render the machine convenien-tly portable and capable of being.

maneuvered with the utmost ease and dispatch from one location on the surface to another, thereby greatly facilitating. the

" grooving operations.

I. will describe only one formof groovingv machine embodying my invention, and will then pointoutthe novel features thereof in claims;

In the accompanying drawings,

Fig. l is a view showing in side elevation and. in working position, one form of grooving machine embodying my invention,

Fig. 2 is a view infront elevation of the grooving machine shown in Fig. 1; I

' Fig. 3 is a plan sectional view taken on, the line 33 of Fig. l and looking in the direction of the arrows;

Fig. 4 is a vertical sectional view taken on the line 4 l of Fig. 3 and looking in the direction of the arrows;

Fig. 5 is an enlarged detail sectional view taken on the line 5-5 of Fig. l and looking in the direction of the arrows.

Fig. 6 is a fragmentary detailv sectional view taken on the line 66 of Fig. 5 and looking in the direction of the arrows.

Fig. 7 is a-detail sectional view taken on the line 7 -7 of Fig. 3 and looking in the direction of thearrows, and

Fig. 8 is a fragmentary sectional view taken on the line 8-8 of Fig. 7 and looking in tl'ie'directionof the arrows. I l

Referring specifically to the drawings in,- which similar reference characters designate similar parts in each of' the several views, my invention in itspresent embodiment comprises a carriage C including a rectangular frame 10, and

wheels

11,12 and 13' journaled in the frame and co-operating to support the frame for rolling movement over a floor. The

wheels

11 and 12 are disposed one in advance of the'other and their peripheries are grooved to ride upon a track Twvhich broadly constitutes a means for guiding the carriage along a predetermined path over the floor. V

The carriage C supportsa grooving element G and a driving means for the element in thepresent instance in the form ofan electric motor M, the grooving element being rotatably mounted on a support S in the form of a platform 14: pivotally mounted on the carriage for movement vertically by means of pins 15 extending through

lugs

16 and 17 formed respectively on the platform and frame 10. The motor is secured directly to the platform by means of threaded studs 18 extending through feet 19formed on'the motor housing and threaded into the platform, and is operatively connected to the grooving element by means of a driving gear 20 fixed to the motor shaft 21 and meshing with a driven pinion 22 fixed to a horizontal stub shaft 23 journaled in the lower section 24 of a two section housing 25 secured to a lateral extension 25 of the platform 14 by bolts 26.

The upoer section 27 of the housing 25 is detachably secured to the lower section 24 by screws 28 and cooperates with the lower section to enclose the gear 20 and pinion 21 and provide a reservoir for containing a quantity of lubricant so that the gears will operate in a bath of lubricant.

The grooving element G in the present instance is shown in the form of a grinding disk 29 of abrasive material such as carborundum and is clamped axially on the forward end of the stub shaft 23 exteriorly of the housing 25, between a pair of collars 30, by means of a nut 31 threaded on the stub shaft.

It will be clear, that due to the pivotal mounting of the platform 10, the weight of the latter and motor as well as the weights of all other parts supported by the platform operate to normally urge the disk 29 downwardly against the floor so that upon rotation of the disk and movement of the carriage on the track T, a groove will be produced in the floor.

In order to definitely limit the downward movement of the platform and hence of the disk 29, a gaging means is provided which in the present instance comprises a rectangular frame 32 (see Figs. 1, 5 and 6) slidably mounted for movement verticaly in grooves 33 formed in the lower section 24 of the housing 25, and having mounted for oscillating movement on the lower end thereof by means of a pin 34, a frame 35 in which is journaled one in advance of the other a plurality of gaging rollers 36 which in the present instance are shown as being three in number, the center roller being mounted on the pin 34 and the other two rollers on pins 37 carried by the frame 35 at opposite sides of the pin 34.

The frame 32 is normally locked against vertical sliding movement in'the grooves 33 by means of a shaft 38 threaded into the lower section 24 of the housing 25 and journaled in the frame 32, the shaft having a collar 39 fixed thereto and abutting the top horizontal member 40 of the frame 32.

The rollers 36 are adapted to roll in unison directly on the surface of the floor, and function to support the platform 14 to the extent of definitely limiting the downward pivotal movement of the platform on the carriage. As the disk 29 moves bodily with the platform, it will be clear that as the carriage is traveling on the track T the rollers 36 will follow any inequalities in the surface of the floor and thus raise the platform and permit the latter to lower in accordance with the inequalities of the surface, so that the disk 29 will accordingly be raised or lowered and thus insure that a fixed relationship will be maintained between the disk and surface of the floor irrespective of inequalities in the contour of the surface, thereby causing a groove of uniform depth to be produced by the disk. This uniformit .of depth is maintained even when the grin ing disk is in a position for cutting a groove at an angle to a groove already cut, for two of the rollers always form a support, so that the third roller may be directly above the previously cut groove without being liable to gravitate into it, and that thus the cutting to a required depth of a groove transversely to the previously cut groove is not affected by the latter. On the contrary, if, instead of the plu rality of rollers 36, only one such roller were journaled in the frame 35, a groove of a uniform depth could not be cut across another groove by the disk. Becauseof the plurality of rollers 36, my grooving machine has therefore a particular advantage over similar machines which depend upon only one roller for maintaining the grooving element in a lowered position.

The shaft 38 provides a means by which vertical adjustment of the gaging rollers 36 can be effected relative to the disk 29 so as to vary the depth'of groove produced in the floor by the latter. According as the shaft 38 is rotated by a suitable tool (not shown) in one direction or the other, the frame 32' and hence the frame 35 with its rollers 36 will be raised or lowered bodily so that the positions of the rollers vertically with respect to the disk will be varied, and hence the depth to which the disk can cut, accordingly varied. V

The effective total weights of the platform, motor and all other parts supported by the platform, which impose a downward pressure of the disk 29 against the floor can be varied, and to this end a coiled expansible spring 41 is connected at its lower end to the platform and at its upper endto an ad justing screw 44 threaded into a horizontal member 45 of a bracket 46 having upright members 47 secured to the carriage C atone side of the latter to support the bracket from the carriage. The adjusting screw 44 'is provided with a handle 44 by means of which the screw can be rotated in one direction or the other to increase or decrease the tension of the spring and hence vary the strength of the latter so that the spring will exert a greater or less upward lifting force upon the platform in opposition to the weight of the platform and parts supported thereon. The pressure of the disk 29 against the floor will thus be varied in accordance withagvariation in; the strength-1 ofthespringj41h c 7 The bracket; 46 co-operates with 3 a :simila-rs bracket 48 secured to the other; side ofg thew- 5 carriage, and .abase plate 49,:securied to; ands spanning-the: brackets to provideza supera structure on which is supported; a rotary suction fan 5O thesrotor ofzwhichiis drivenw from the; motor -M by: means 0161321 belt 51:

trained over a: pulley 52 fixed to: the-roton shaft:53 and :a second pulley.54;fiXed to;the motor shaft 21. The belt. is maintained}: under ;clriving,;tens ion at; all times, irrespective of the raising and lowering ,movenient' m of the platform 14, by meanssof; ail-idler;

pulley 55 rotatablyv mounted on an-arm 56; pivoted. at 57 on thevstato'rvofi the fan 50 and normally urged 3 into engagement with; one stretchof the belt 51- by means of; a;

0, spring- 58 connected to the, arm -and tether bracket 46.

The intake 59 of the; fan 51is-connected1to a conduit 60 having a flexible. section 6L connected to a hood 62enclosing the-disk- 5, 29 i and secured to the oscillating frame-135,.

' the hood beingprovided. on its-outer side, with a door63 to permit access'tothe disk; for removal and a replacement.- of the latter-..

vTo the exhaust 64 of the fanis connected,

.0. a conduit 65 leading to a circular header;66.i-

supported in elevated position from the

brackets

46 and 48 by meansof' rods.-67, andfrom the header is suspended a bag;68,.- It will be clear that during the grooving;

35 operation, the material as removed from the;

I 'floor by the disk: 29xwill be suckedbythe fan 51 from the interior of: thehoodi- 62; and discharged into the bag so-thata1l;;dust': is eliminated andthepossibility ofithere:

.0. moved material interfering. with the proper,

' cutting. of the groove, prevented v The: carriage C and the groovingelement: G are capable of being elevatedclear, of'lth e c floor and support-ed tor rolling movement,

15 0ver the floor in a direction at a right angle;

to the direction oftravel ofjthe carriages.

alongthe track T sothat the carriageycan be applied to.or removedfromthe track asg desired. To this end and. as armeans-i fort 50. ,.accomplishing these functions a rockshafh """69 is journaled horizontally; in one. end- 0f the carriage C at rightfang'les tothev axes of the wheels 11, 12., and 13 and; projects, fromop'posit'e sides ofthe carriage-., Tothe 5.5.,projectingjends of the shaft 69, are tfiiceds;

arms 70 and'71,\on the free ends of which; are rotatably-mountecl rollers.72iandi73respectively so that'the rollers willzbe lowered-i or elevated according as the. shaft 69Eis;

0,.rocked in one direction or the other;

A second rock shaft 7411s journaledhori' zontally. in l the opposite s end: of [the carriage parallel .tolthe shaft.69., :and tdthis-shaft v isfixed an arm 75. to the; freeiendof-flwhich 1.;

65 is pivotallyconnected a second arm 76 "carry 1 ing-a- TOHI'fJZTs iguided :fo'r; vertical zmovee ment :in; recess; 7 8 in theecarriage'i by means;

of: a-zpini79 omwhich thearollerr77 iSti'Otfitiv ably; mounted; andiarslotiSOin aiwalliof the; v recess,- slidably receiving onecprojectingendz ofwthe pine Thussthearoll'er: 771Wi11) lie-110w ered; orr elevated; according 'as the; shaft: 74';- lS'EI'OClI QdiII-0116':dlIGGtlOHJOIithG}OtheI'J 1 The rollers :72,q73:1and: 77 are capable: off being simultaneously lowered.- to: elevateitha; 76. carriage G Lclearq of: the? floor and: track: '1; and support athe: 7 carriage for; rolling move-1 ment; or simultaneously e-lewateditovlower:thee; carriage -.toi the-floor and tl'fiblillbyi means ;of an operating-levenSl; fixeditoythe shaft: 74-1 and: connected by a 1 link 81? to. an; angulari'." extension 5821' oni the; arm 7 0, and: the-"rollers; are; capable ofibeingzlatchedsin ,their -loweredhc. or aotiverapositions. by; meanscof a: gravity: pawl-83 pivoted at 84;on'the5linli' andiens iii gageableswithc a; notch 85 ;formed.= inzth'e cars 4 riage inthe planeofr the paw-l. TlieepaiWL-is; provided with: an. angular extension; 86i byi means-of which theepawl can releasedi. from: the :notch, to permit loweringof; the:- 9351 carriage-i I To therock; shaft: 69 are fixed t at; points: between the wheels 11':and;121a:pairsof:arms;-

v

87 and 88, the free ends of'whicliun'derlietheren ds ofithecioscillating r frame 35;,and fare engageablewith. the frame :to raise :the latterr and i hence; the platform; and grooving: ele ment'; as the shaft: 69risrocked to s elevate. the: carriage; G, so; that -bothrthe latter; and? grooving,- elementwilhbe simultaneously ele-:

vated and the machine rendereducaipable; 1 of:v being rolled over uthet floorntowardssand away fromitheqtrack To; one; of, the uprighhmembers; 47: of the bracket; 46 is; ;pivotedat; 89 a handle 9.6 by; m meanseof-y which thewcarriage-r can be pushed: over; the floor. during the: grooving: open-:5 ation, andfi onvthe base; plate; 1 4,9; is secured: a socketi. 91 from which conductors 92-. lead; to,-.t l 1'e;'motor-. A 'suitable-tplugjcarried by: .110 a cfiexible conductors (not shown); leadinga from a.- source of current} supply is: adapted? to beplugged. into? the socket! to; supply;

"Let; it; be assumed that; a: cementczvfloorg forv example; is to be-v grooved; in; eta-manner; to: simulate ;tiling A suitable} lengthrofztrack;

Ti'. is placed: om thea floor parallel .tor,the:-

length of. a groove to be produced-L so. than when the-carriage G is;- r0lled-- over "therfioorion'therollers;72,il73 and7 7 andTthen: lowered? to position the wheels 11 andjlZ on; the-- track the grooving; clement G will be. dis- 128* posed gtlie plane itcis desired tokprodkloee the ,groove in Bthe floor, and the e-gagingmolv lers; will reSih 011i the; floorsazlongsidenthe a.

tracker 7 'i w I R1 7 With; 'thegcarriageeapplied to thestraclflli 130' :The; operation 5 ofv the; machine is}: 01; 1161 i andassuming that'the vertical adjustmentof the gaging rollers 36 is such that the grooving element will clear the floor, current is supplied tothe motor M, after which 5 vertical adjustment of the rollers 36 in an upward direction is effected by rotation of the shaft 38 until the platform 14 and hence the grooving element G are lowered sufficiently for :the latter to produce a groove offthe depth desired. The carriage C is then pushed along the track by'the handle 90 to cause the grooving element to produce a grooveinthe floor parallel to the track T.

After the cutting of a groove in the floor, the carriage is elevated from the floor and track, and the grooving element from the floor, by proper manipulationof the operating lever 81, so that the track can be removedand replacedin another location on the floor fortliecutting of another groove.

It will be clearthat the operation above described isrepeated for each groove to be produced and thatthe machine is capable of being readily moved about to producethe desired grooves as well as transferred from place to place between the grooves so that the grooving of the floor in simulation of tiling can be accomplished with the utmost ease and dispatch. i r 7 Although 1 have herein shown and described only one form of grooving machine embodying my invention, it is to be understood that various changes and modifications may be made hereinwithout departing from the spirit of the invention and the.

spirit and scope of the appended claims.

I claim as my invention: 1. A grooving machinecomprising a carriage, means for guiding the carriage along 'aipredetermin'ed path over a floor, a support pivotally mounted on the carriage for movement vertically, a grooving element rotatably mounted-on the support eccentrically of the pivotal mounting of the latter iiand normally'urged by the support into engagement with the floor, to produce a groove in the latter i'n'response to movement of thecarriage over the floor, and means for limiting the movement of the support to- Zwards the fioor to control the depth of .the

groove produced in the floor by the element, said last means-comprising a frame mounted for oscillating movement on the support, and'a plurality of gaging rollers journalled Tone in advance of the other in the frame and "onithe platform eccentricallyof the pivotal mounting of the latter, a motor supported by the platform for driving the grinding disk, the wei hts of the platform and motor being operabfe to urge the disk downwardly, a frame mounted for oscillating movement on the platform, and a plurality of gaging rollers journaled one in advance 0 each other in the frame and adapted to roll in unison directly on the floor to support the platform, the axis of the grinding wheel being intermediate the axis of the foremost and rearmost rollers.

3. A grooving machine comprising a wheeled carriage, a track for guiding the carriage along a predetermined path over a floor, a platform'pivotally mounted on the carriage, a rinding disk rotatably mounted on the plat orm eccentrically of the pivotal mounting of the latter, a motor supported by the platform for driving the grinding disk, the weights of the platform and motor being operable to urge the disk downwardly, a frame mounted for oscillating movement on the platform, and a plurality of gaging rollers journaled one in advance of each other in the frame and adapted to roll in unison directly on the floor to su port the platform, and means whereby the rame can be adjusted vertically relatively to the platform. r

4. A grooving machine comprising a wheeled carriage, a track for guiding the carriage along a predetermined path over a floor, a platform pivotally mounted on the carriage, a rinding disk rotatably mounted on the plat orm eccentrically of the pivotal mountin of the latter, a motor supported by the plat orm for drivin the weights of the platform and motor being operable to urge the disk downwardly, a frame mounted for oscillating movement on the platform, and a plurality of aging rollers journaled one in advance o each other in the frame and adapted to roll in unison directly, on the floor to .support the platform, and means whereby the frame can be adjusted vertically relatively to the platform, comprising an adjusting screw coacting with the frame and platform to raise or lower the latter according as the screw is rotated in one direction or the other.

5. A grooving machine comprising a wheeled carriage, a track for guiding the carriage along a predetermined path over a floor, a platform pivotally mounted on the carriage, a grinding disk rotatably mounted on the platform eccentrically of the pivotal mounting of the latter, a motor supported by the platform for driving the grinding disk, the weights of the platform and motor being operable to urge the disk downwardly, a frame mounted for oscillating movement on the platform, a plurality of gaging rollers journaledbne in advance of each other in the. frame and adapted to roll in unison the grinding disk,

directly on the floor to support the platform, and means for elevating the carriage and platform sufliciently to clear the carriage from the track and the grooving element from the floor, and including rollers for supporting the carriage for rolling movement over the floor in a' direction at an angle to the direction of travel of the carriage on the track, arms on which the rollers are rotatably mounted, rock shafts to which the arms are fixed, a link operatively connecting the rock shafts, an operating member coacting with the link to rock said shafts and thereby raise or lower the rollers, and means for releasably retaining the rollers in lowered position.

6. A machine of the character described comprising a wheeled carriage, a track for guiding the carriage along a predetermined path over a floor, grinding means supported by the carriage for grinding engagement with the fioor, and means for elevating the carriage sufiiciently to clear it from the track and the grinding element from the floor, including rock shafts mounted on the carriage, arms fixed to the shafts, rollers carried by the arms for supporting the carriage for rolling movement over the floor in a direction at an angle to the direction of travel of the carriage on the track, a link operatively connecting the shafts, an operating member coacting with the link to rock the shafts and thereby raise or lower the rollers, and means for releasably retaining the rollers in lowered position.

LOUIS R. WILLIAMS.