US2619081A

US2619081A - Stone sawing apparatus

Info

Publication number: US2619081A
Application number: US284411A
Authority: US
Inventors: William D Johnson
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-04-25
Filing date: 1952-04-25
Publication date: 1952-11-25
Anticipated expiration: 1969-11-25

Description

Nowes, 1952 Filed April 25, 1952 w. D. .lcoHmsoN 2,619,081

STONE.I SAWING APPARATUS 5 Sheets-Sheet l INVENTOR. w/u. MM o. JOHNSON,

TTOE/VEYS.

Nov. 25, 1952 w. D. JOHNSON STONE SAWI'NG APPARATUS 5 Sheets-Sheet 2 Filed April 25, 1952 Nov. 25, 1952*. w. D. JvoHNsoN 2,619,081

sToNE sAwING APPARATUS 5 Sheets-Sheet I5 Filed April 25, 1952 IN V EN TOR.

WML/AM D. JOHNSON,

Nov. 25, 1952 w. D. JOHNSON sToNEsAwING APPARATUS 5 Sheets-Sheet 4 Filed April 25, 1952 (0 0) (0 C) (O 0) l0 O) L0 O) (0 0) (O o) LO O) (O O) (0 INVENTOR.

N, E mm @fr A D. m MA M w Nov. 25, 1952 w. D. JOHNSON 2,619,081

STONE sAwING APPARATUS Filed April 25, 1952 5 Sheets-Sheet 5 FIG. JO.

gol

IN VEN TOR.

WML/4M a. Jofs/Nso/v,

Patented Nov. Z5, 1952 UNITED lS TATES PATENT OFF I CE STONE S'AWING APPARATUS William D. Johnson, Austin, Tex.

Applicationv April 25, 1952, Serial No. 284,411

(Cl. 12E-14) `'I'Claima 1 VThis invention relates to stone sawing apparatusI and more particularlyto apparatus vfor sawing vstone slabs rinto brick shaped, rectangular blocks knowny to the trade as Ro-manstone.

y'It is among the objects yof the invention :to provide an improved apparatus or mechanism Which'will receive stone slabs of apredeterrnined 4thickness and inone yconti-nuoi-is operatiornreduce the vslabs tobrick shaped rectangular blocks known to the trade as "Romanstone which performs the successive sawing steps onl a slabwhile the-slab isv supported onl and-moved along a continuous supporting table; which receives the stone at one yend and dischargesthelcutfblocks at the other end of theftable; Awhich operates automatically -und'er manual control; and lwhich issimple-and durable in construction, economical to manufacture, easy to use, andeiective-and eiiicientin opera-tion.

Other objectsan'd advantages'willbecome apparent from a consideration of thefollowing description and appended claims' in conjunction with the r-accompanying drawings wherein:

Figure 1 is av top plan-view of -a stone-*sawing apparatus illustrative of the invention;

Figure 2 is a-side elevational lview 'oi the lapparatus illustrated in Figure'l Y '-Figure3"is a' fragmentary cross sectional view onan venlarged scale taken-online 3-31of {Figlire 1; j l d Iig'u'freifl isl va -fragmentaryfcross sectional Lvil'a'w on an'enlarged'scale -takenfon .the line 44-4 of Figure 1;

`Figure -5 isacross `sectional viewon the l-ne 5--5 of VFigure '4;

Figure 6l is a-fragmentary-cross y'sectionalview on an enlarged scale on the line 6 6 of lFigurell;

V`Figure 7 is a fragmentary-cross sectionallview on the line "vl- 51 of-Figurel; I

Figure 8 is la fragmentary cross sectionalyiew on the line 8--'8 of Figure 7; Y

VFigure 9 is a fragmentaryy cross-sectional viewonthe linee-*9 ofFigure 8;

Figure 10 is a'fragmentaryftop-'plan View `offa modified 'form `of apparatus;

Figure'l-l is a fragmentaryV crossfsectional view on -anerlarged scale on the-line I-I--I I -of'Figure 10; v Y

Figure -12 is -a'fragmentarycross sectional' view on the line I2-'I2of Figure 11'; and

'Figure'l'is a fragmentary crossse'ctionalview on an'enlarged -scale ontheline -I3I3 'of Figure 41I). y

iWithv 'continued reference to `the l'-drawings, vthe appaiat'usd comprises a tabla. generally Alindicated at I0, vand including elongated side members II andl2 disposed in spaced apart' and substantially parallel'relationship and end members I3'and I4 disposed between and connected at their ends to the side members one at each end of the table.

A rst saw assembly including a plurality of spaced saws rotatable about a common axis'is positioned with respect to the table I0 so that the saws are spaced above the table with vthe axis extending longitudinally of the table. Supporting columns I5 and IVG are disposed one at each side of the table intermediate the length of the latter and similar columns I'I and I8 are'disposed one at each side of thetable and spaced from the columns I5 and I5 respectively. The rst-.saw assembly is mounted on the respective supporting columns for transverse back and forth movement with respect to the table IIJ. Specically, 'spaced apart and substantiallyparallel rods I9 and 2li extend between the supporting columns I5 and I6 and are secured at their ends to these 'columns at the upper ends of the latter to provide a guideway extending transversely of the table substantiallyperpendicular to the longitudinal center line-of 'and disposed above the table. Similar rods 2| and 22 extend between the columns vI'I and I8 and are-secured at their ends to these columns at the upper ends of therlatter to provide a second guideway 24 spaced from and substantially parallel to the rst guideway 23 and extending transversely above the table I0 substantially perpendicular vto the longitudinal center line of the latter.

YSlide blocks `25 and 26 are mountedv onthe guideways 23 and 24'respectively and a rsti saw arbor or horizontal axis 21 is journaled near'its opposite ends inbearing blocks A2a and 2'9 depending from the

slide blocks

25 and 26 respectively, the saw arbor 2l extending longitudinally ofthe table and being spaced above the table 'and substantially parallel thereto. Stone cutting saws 30 are mounted on the saw arbor-'21 vv:at spaced apart locations therealong formovement transversely ofthe table betweenthegui'd'eways 23 and 24. In one operative installation the saws 30 `are spaced apart approximately 154/2 inches.v

An .electric motor 3I mounted on "the @slide block 25 and carries a rchain sprocket 32 voni'o'n'e end of its shaft 33. -A chain Vsprocket -34 is mounted -on thesawarborl near the cor-respondingend of the latter and a 'chain'35fextending faroundthe sprocketsS 2 and f3 4`drivingly 4connectsthe-motor-'3I to vthesa'warbor-2l. f 1

A yoke Y36 is pivotally connecte'diat'fits ends. to the slide blocks 25 `and 26 respectively and-a 3 tongue 31 is pivotally connected at one end to the yoke 36 at the center of the latter. The .tongue 31 projects substantially perpendicularly from the side member II of the table and extends slidably into one end of a cylinder 33 mounted at its ends on

fixed supports

39 and 46 spaced outwardly from the table I6. A piston, not illustrated, is mounted on the end of the tongue 31 disposed within the cylinder 3S and fluid pressure conduits 4I and 42 are connected to the cylinder 38 one at each end of the latter for moving the piston back and forth in the cylinder and consequently moving the slide blocks and 26, motor 3l, saw arbor 21 and saws 36 back and forth transversely of the table.

The conduits 4I and 42 lead through a'suitable manually operated valve from a source of fluid under pressure so that the movement of the saws 36 transversely of the table is subjected to manual control.

A second saw assembly including a plurality of spaced saws rotatable about a common axis positioned in longitudinal spaced relation with respect to the first saw assembly with its saws spaced above the table I6 and its axis extending transversely of the table. Supporting

posts

43 and 44 are disposed one at each side of the table at locations spaced from the supporting posts I1 and I8 respectively in a direction away from the posts I5 and I5 and on

such posts

43 and 44 is xedly mounted the second saw assembly. Specifically, bearing blocks or pillows 45 and 46 are mounted on the upper ends of the

posts

43 and 44 respectively. A second saw arbor or horizontal axis 41 is journaled near its opposite ends in the bearing blocks 45 and 46 and extends transversely of the table I6 above the table and substantially parallel to the guideways 23 and 24. Stone saws 53 are mounted on the arbor 41 at spaced apart locations therealong, the spacing of these saws in the operative installation referred to above being approximately one and three-quarters inches.

An electric motor 5I is mounted on a supporting post 43 and a chain sprocket 52 is mounted on one end of the motor shaft 53. A chain sprocket 54 is mounted on the saw arbor 41 at the corresponding end of the latter and a chain 55 extending around the sprockets 52 and 54 drivingly connects the motor 5I to the saw arbor 41.

A first conveyor or plurality of rollers 56 extend between the table side members II and I2 from the end of the table at the side of the. slideways 23 and 24 remote from the saw arbor 41 to a location substantially directly under the rod 22 ofthe slideway 24 nearest the second saw arbor 41.

As is particularly illustrated in Figures 4, 5 and 6, each of these rollers is provided with an axle 51 projecting at its ends from the respectively opposite ends of the corresponding roller and journaled at its ends in

suitable bearings

58 and 59 carried by the side members II and I2 of the table and each roller is provided with a cover 66 in the form of a cylindrical body of resilient material, such as rubber. Chain sprockets 6I are mounted one on each roller shaft 51 at the ends of the roller shafts adjacent the side member II and a chain 62 extends aroundV the chain sprockets on the end rollers and engage all of the other sprockets to cause all of the rollers to rotate simultaneously in the same direction and at the same speed. 1

An additional chain sprocket 63 is mounted on the end of the shaft of the end roller 56 adjacent the side member II and an electric motor 64 is mounted on the adjacent supporting post I1. A sleeve 65 is rotatably mounted on the shaft 63 of the motor 64 and a chain sprocket 61 is mounted on the sleeve 65. A chain 68 extends around the

sprockets

61 and 63 and drivingly connects the sleeve 65 to the end roller 56 and a manually operated clutch 69 is connected between the motor shaft 56 and the sleeve 65 to provide a manually operated power connection between the motor 65 and the rollers 56.

When the clutch is engaged and the motor 64 in operation, the rollers 56 are all driven in a direction to move a stone slab disposed thereon in a direction from the end of the table at the side of the slideways 23 and 24 remote from the second saw arbor 41 toward the slideways, such a stone slab being illustrated in Figure 1 and generally designated at 1U.

A second conveyor is arranged in end-to-end relation with respect to the first conveyor and is mounted on the table I9 for cooperation with the first conveyor. The second conveyor com- Y prises a shaft 1I which extends between the table side members II and I2 adjacent and substantially parallel to the roller 56 and this shaft has spaced apart chain sprockets 12 thereon. A similar shaft 13 extends between the side members I I and I2 at a location spaced from the side of the saw arbor 41 remote from the end roller 56' and has spaced apart chain sprockets thereon corresponding to the sprockets 12. Silent link chains 14 extend around corresponding sprockets on the shafts 1I and 13 and each of these chains passes through the space between two adjacent saws 50, as is particularly illustrated in Figure 8. It is to be noted that the rst and second conveyors constitute a conveying means for the support and transport of a stone slab to be cut.

A gear 15 is mounted on the end of the shaft 63 adjacent the support post 43 and a gear 16 is mounted on a stub shaft 11 projecting outwardly from the frame side member II adjacent the shaft 13 and meshes with the gear 15. A chain sprocket 18 is mounted on the stub shaft 11 outwardly of the gear 16 and a chain sprocket 19 is mounted on the second saw arbor 41 adjacent the bearing block 45. A chain extends around the..

sprockets

18 and 19 and this chain and the

gears

15 and 16 drivingly connect the saw arbor 41 to the chain sprocket arbor or shaft 13 so that the chains 14 are driven in va direction such that their top runs move from the roller 56 toward the saws 50 when the second saw arbor 41 is driven by the motor 5 I.

A manually movable stop 8| extends transversely of the table at a location substantially directly below the slideway rod 22 and this stop can be raised to a position at which it projects above the rollers 56, as particularly illustrated in Figure 3 to a position at which it is disposed below the top surfaces of these rollers.

In the useof the device, a stone slab of predetermined thickness, for example four inches, is placed on the rollers 56 at a location spaced from the side of the slideway 23 remote from the second saw arbor 41 with the stop 8I raised the motor 46 is placed in operation and vthe clutch 69 engaged to drive the rollers until the front end of the stone slab is brought against the stop 8|. With the motor 3| then in operation and driving the saws 30, the hydraulic or pneumatic device 38 is operated to move the saws v33 .aieiegoei 12-tothe Lsidelmember `II'--therebycutting the stone slab into-^a1 pluraiityp strips Ieach approximately? -four inches thiekfan'd :lifteen andv one-half incheswide-and of' ai' length-equal tov the-widthA of thel original slab. `Whenithe-savvs'J3l) l have :been moved'back-elear of the slab-'the stop -8I islowered 'and-the'lutchiGSfreengaged to move `thecut strips-of stone past'- 'theI slideway fl 4 *and ontothe chains 14,'the1stopxbeing' againfraised when these strips havelpassed the stopltoengage theifront 'end of@ the" remainder of lthe -Y slab and l the 'clutch 68% is'fthen disengaged Landi-,he lhydraulic or pneumatic device again actuated? to= move: the sawsll transversely fof the table :toe-cut the lremainder-'of theslab'into stripsfthis operation being-repeated the''number"of times necessary for-the length lof slabrfbeingcut.

"The" strip lfirst* cut ffromf the v"iront end of the slab-will probably I be "irregular on' its front-edge andl insuCh-caSe, will be-remo've'd-from the 'chain table leading tol-the-saws50 "before it freaches these-"saws `With-the motor-5| =in*operation, `as thefstrips severedf'fromf theslab by the-saws' 30 movepast the-saws 50- they are -ou-t-I transversely thereof into brick shaped blocks which-are now approximate- 1y Ifour'inches ywide, fifteen and one-half inches long 'and' one-andthree-quarters inches thick. These" blocks are vdischarged from the chain table onto rollers-850i a discharge table-86 constitutingitheend portionvoflthe'ftable l-Dat the side ofthe sawarbor l-41 remotefrom theslideways 23 and l2 4. The stone blocks' are removed -from the discharge table forstacking instoragef-piles or removal to vconstruction projects.

"-n the -modied arrangement illustrated in 4Figures' 1'0to 13 Ainclusive the constructionisthe samefas? that illustratedy in Figures V1 to -9 1 inclusive-'and'described --abovefuexcept Ythat the feed chains 14'ifor the saws'ill are omitted and power driven vfeed Vrollers 90 are substituted' therefor.

'The rollers -90 extend transversely of themachine frame between the side rails Il and i2 andeach Vroller -comprises -a shaft Jill ,-journaled at'its'fends inlbearings-92 mountedl on the lside rails Ill and I2,andfasleeve orcover `I 93 ofresilient 'materiaL such asv vulcanized rubber, coaxially v mounted on the shaft andextending vbetween thevlside-rails H and t2.

"In the arrangement villustrated lthe bearings garemounted onthe-outer sides of the side rails Aandthe end portions of the shafts -9l extend througn'holes inthesiderailsand into the corresponding bearings.

Vv1('Jhain'sproclrets 94 are mounted one on each roller'-shaft-9| -at theouterendsof the bearings 92-andan endlesschainfg extends around all ofi-the chain A'sprockets -94 and-'constrains all of thelrollersiS to rotateat the same speed and in ithesamedirection. V'l'hegear 15 is mounted onrthe endlrcllershaftila and is driven by the electric .motor 5l 'through the chain sprockets 1=9;and.f,18,-chain 80'and gear 16, mounted von the stub shaft 11 carrying the chain sprocket .18,fand meshing With .gear 15.

YThe .rollers :9011, vb' and ,90e nearest:v the :saws 50;are ,provided-with. circumferential' grooves 96a, Sib, andncmespectively whichreceive the cutting-edges of thesaws- 5i),r vas is particularlyshown infFigurell. Thegrooves 96brin .the roller .90b directly under-the saws are .deeper than the grooves i:illiazand 960 in .the irollers 90a and :90c at respectively fopposite :sides 'of f.; roller :98h :so that, the: sawl teethfully'.clearithelE rollers.

The-'rollers 190 -are contiguouslyY vdisposed;--al1l ng the -machine yframe and theirv operation is. substantially'ithesame as lthat of the chains :141-in supporting'the stone slabs and 'movingthezslafbs past the saws y5l).

The invention may 'beembodiedin other: specinc forms without departing from..thefspirit 1or essential characteristics thereof. v.The present embodiment is, 'therefore to be .considered fin all respects -as illustrative :and vnot restrictive, the rscope 'of .the invention being f indicated 'by the appended yclaims rather "than lby 'l the lforegoing description, fand all. changes which- :come within-the meaning and range of equivalency of -f the claims, are, therefore, intended 'to-'beieinbraced therein.

I1. Stone -sawingzapparatus comprising anselongated? table-,slideways disposed` intermediate the length of f'said '.table `and L extending f transverselyof the ltable above the same/inv spacedf apart-land substantially f parallel relationship to -each other,

slidesfmounted one onl eachslideway, a first saw4 one of-sai-'dl slidesand drivingly connectedto said first -saw arbor, 'fluid pressure Voperated lmeans supported adjacent said'table 'and connected'to said -slides Vfor movingV said saw arbor vandsaid saws backandforth-across said table, "bearing blocks ydisposed one ateach 'side'of saidta'ble atav location spaced'from'said slideways,a second saw arbor journaled 'at its `ends V"in said bearing blocks and extendingtransversely 'of said^"table above "the same, saws jmountedqon 'said 'second saw arbor at` spaced apart i locations' therealong, power-means drivingly connected toisaid second saw TarbOLsaid'ta'b-le including power operated means forl` moving stone slabs 'therealong 'in a direction'froml said slidewaysto said second .saw arbor,an'd"releasable stop means carrie'd'bysaid table between said slideways and said second saw arbor'forholding stone slabs-stationaryon said table while being traversed by the saws on said first saw arbor.

2. .Stone sawing apparatus comprisinganelongated' table, ,slideways ,disposedlintermediate .the length of said table .and extending .transversely of lthe table above the same inspaced apartand substantially parallel relationship to eachother, slides mounted one on each slideway, a rstsaw arbor journaled atits .ends on.said slides .fand

extending v'longitudinally of said .table, .saws mounted on sai-d first saw5 arbor.v at spaced .apart locations 'therealong power means mounted on oneof said slides and drivingly .connectedto said rstsaw arbor, iluid pressure operated means supported adjacent said table and connected to said slides for moving said saw arbor and said saws .back and forth acrosssaid table, bearing blocks Vdisposed oneat each side iof .said table ata location spaced'from said slideways, a second sawarbor'journaled at its ends'in said'bearing blocks and extending transversely of said 'table above the'same, saws .mounted o-n said second saw'arbor at spaced 'Y apart locations therealong, powerV means drivingly connected to `said "second saw arbor, sai'dftable including power operated means for moving stoneslabs vtlierealong in a direction from said slideways to said second saw arbor, and releasable stop means carried by 4said table between said slideways =and said second saw ia'rbor. for .holding stone-slabs stationary on said table while being traversed by the saws on said rst saw arbor, said power operated means for moving stone slabs along said table comprising power driven rollers extending from the slideway adjacent said second saw arbor in a direction away from said second saw arbor and power driven chains extending from the slideway adjacent said second saw arbor under the latter.

'3. Stone sawing apparatus comprising an elongated table, slidewaysdisposed intermediate the length of said table and extending transversely of the table above the same in spaced apart and substantially parallel relationship to each other, slides mounted one on each slideway, a rst saw arbor journaled at its ends on said slides and extending longitudinally of said table, saws mounted on said rst saw arbor at'spaced apart locations therealong, power means mounted on one of said slides and drivingly connected to said rst saw arbor, uid pressure operated means supported adjacent said table and connected to said slides for moving said saw arbor and said saws back and forth across said table, bearing blocks disposed one at each side of said table at a location spaced from said slideways, a second saw arbor journaled at its ends in said bearing blocks and extending transversely of said table above the same, saws mounted on said second saw arbor at spaced apart locations therealong, power means drivingly connected to said second saw arbor, said table including power operated means for moving stone slabs therealong in a direction from said slideways to said second saw arbor, and releasable stop means carried by said table between said slideways and said second saw arbor for holding stone slabs stationary on said table while being traversed by the saws on said first saw aber, said power operated means forrmoving stone slabs along said table comprising power driven rollers extending from the slideway adjacent said second saw arbor in a direction away from said second saw arbor and power driven rollers extending from the slideway adjacent said second saw arbor under the latter.

4. Stone sawing apparatus comprising an elongated table, slideways disposed intermediate the length of said table and extending transversely of the table above the same in spaced apart and substantially parallel relationship to each other,

slides mounted one on each slideway, a rst saw arbor journaled at its ends on said slides and extending longitudinally of said table, saws mounted on said rst saw arbor'at spaced apart locations therealong, power means mounted on one of said slides and drivingly connected to said first saw arbor, fluid pressure operated Vmeans supported adjacent said table and connected to said slides for moving said saw arbor and said saws back and forth across said table, bearing blocks disposed one at each side of said table at a location spaced from said slideways, a second saw arbor journaled at its ends in said bearing blocks Vand extending transversely of said table above the same, saws mounted on said Second saw arbor at spaced apart locations therealong, power means drivingly connected to said second saw arbor, said table including power operated means for moving stone slabs therealong in a direction from said slideways to said second saw arbor, and releasable stop means p carried by said table between said slideways and said second saw arbor for holding Ystone slabs stationary on said table while being traversed by the saws on said first saw arbor, the saws onv said rst saw arbor beingfspaced apartV a greater distance than the saws on said second saw arbor and said saw arbors being individually driven by separate power plants.

5. Stone sawing apparatus comprising an elongated table, slideways disposed intermediate the length of lsaid table andv extending transversely of the table above the same in spaced apart and Substantially parallel relationship to each other, slides mounted one on each slideway, a rst saw arbor journaled at Vits ends on said slides and extending longitudinally of said table, saws mounted on said rst saw arbor at spaced apart locations therealong, power means mounted'v on one of said slides and drivingly connected to said rst saw arbor, fluid pressure operated means supported adjacent said table and connected to said slides for moving said saw arbor and said saws back and forth across said table, bearing blocks disposed one at each side of said table at a location spaced from said slideways, a Second saw arbor journaled at its ends in said bearing blocks and extending transversely of said table above the same, saws mounted on said secondY saw arbor at spaced apart locations therealong, power means drivingly connected to said second saw arbor, said table including power operated means for moving stone slabs therealong in a direction from said slideways to said second saw arbor, and releasable stop means carried by said table between said slideways and said second saw arbor for holding stone slabs stationary on said table while being traversed by the saws on said first saw arbor, said power operated means for moving stone slabs along said table comprising power driven rollers extending from the slideway adjacent said second saw arbor in a direction away from said second saw arborand power driven chains extending from the slideway adjacent said second saw arbor under the latter, said saw arbors being individually driven by separate power plants and said rollers being driven by a manually controlled power plant separate from the power plants driving said saw arbors.

6. Stone sawing apparatus comprising a, horizontally disposed conveying means for the support and transport of a stone slab to be cut, a rst saw assembly including a plurality of spaced saws rotatable about a common horizontal axis positioned so that the saws are spaced above said conveying means with said axis extending longitudinally of the latter means, said assembly being mounted for traversed back and forth movement with respect to said conveyingrv means, means operatively connected to said assembly for effecting the traversed back and forth movement of the latter, and a second saw assembly including a plurality of spaced saws rotatable about a common horizontal axis positioned in longitudinal spaced relation with respect to said rst assembly with its saws yspaced above said conveying means and its axis extending transversely of the latter means, said second assembly being ixedly mounted with respect to said conveying means.

'7. Stone sawingapparatus comprising ahorizontally disposed conveying means for the support and transport of a stone slab to be cut, said conveying means embodying a first conveyor and a secondconveyor arranged in end to end relation with respect to said iirst conveyor, a first saw assembly including a plurality of spaced saws rotatable about a common horizontal axis positioned .so that the saws are spaced a'bove said conveying means with said axis extending longitudinally of the latter means, said assembly being mounted for traversed back and forth movement with respect to said conveying means, means operatively connected to said assembly for effecting the traversed back and forth movement of the latter, a second saw assembly including a plurality of spaced saws rotatable about a common horizontal axis positioned in longitudinal spaced relation with respect to said first assembly with its saws spaced above said conveying means and 10 its axis extending transversely of the latter means, said second assembly being xedly mounted With respect to said conveying means, and a stop interposed between the facing ends of said first and second conveyors and movable vertically above and below said conveyors for engagement with an end face of the slab to be cut.

WILLIAM D. JOHNSON.

No references cited.