US1462296A - A corpora - Google Patents

Description

July 17, 1923.

E. J. MooR'EET AL SAND BLAST APPARATUS 1918 5 Sheets-Sheet l July 17, 1923.

E. J. MOORE ET AL SAND BLAST APPARATUS 1918 3 Sheets-Sheet 2 Filed Nov. 14

`July v17, 1923.

E. J. MOORE ET AL SAND BLAS T APPARATUS Filed Nov. 14, 1918 .'5 Sheets-Sheet .5

` f5 mi Patented July 17, 1923.

UNITED STATES PATENT y OFFICE.

EDWARD J. MOORE AND RAYMOND H. MOORE, OF CLEVELAND, OHIO, ASSIGNORS TO THE W. W. SLYiMANUFACTURING COMPANY, OF CLEVELAND', OHIO, A CORPORA- TION OF OHIO.

sAND-BLAsT APPARATUS.

Application filed November 14, 1918. Serial No. 262,508.

To all whom t may cof/wcm.'

Be it known that we, EDWARD J. Moonrl and RAYMOND H. lMOORE, citizens of the United States,-residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certainnew and useful Improvement in Sand-Blast Apparatus, of which the following is a full, clear, and-exact description, reference beinghad to the accompanying drawings., y

This inventionrelates to vsand blast apparatus and has for its general object to increase the efhiciency,-fiexibility, and durability of such apparatus.` Further and morev limited objects of the invention are to pro-- vide an improved means for supplying the sand from the container therefor to the.

point at which it is subjected tothe action of the impelling fiuid; tolimprove the construction and operation of the sand-blast head; and to so construct and arrange the parts as to prolong the lives thereof and to reduce to a minimum theoccasions for and the expense of renewingsuch parts. vWe accomplish the foregoingand otherobjects to be set forth hereinafter inand through the construction illustrated in the drawings forniing part hereof, wherein Fig. 1 repre-.

sents an elevation of an apparatus constructed in accordance with our invention but with the air drier omitted for sake of clearness; Fig. 2 is a plan view of such apparat-us, showing a part of the .cover for the tank or reservoirbroken away; Fig. 8 a central vertical sectional viewthrough such apparatus; Figs. 4, 5 and 6 are enlarged sectional details corresponding respectively to the lines 4 4, 5 5, and 6 6 ,of Fig. 3, looking in the direction of the arrows; FigQ a central longitudinal sectional view of the air valves; and Figs. 8, 9, 10, 11, and 12 sectional details corresponding .respectively to the lines 8 S, 9 9, 10`-10, 11-11, and l12-12 of Fig. 7 and looking in the direction of .the arrows.

Describing by referencel characters the various parts illustrated herein, 1 represents a cylindricalv tank havinga concave bottom 2 provided with a central oriiicef. The tank is also provided with a concave head 4 provided with an'enlargedy central opening Surrounding the opening 5 is aring 6 'the opening whereof registers withthe Opening 5. This ring is shown as riveted tothe cover 4 and is provided in its lowerlsurface `ing a double seat for a valve.

with a pair of annularrecesses containing per end of the vertical branch 10 of a pipe llfwhich projects through the wall of the tank 1 and which is connected t-o a valve, the casing whereof is indicated at 12. The interior of the sleeve 9 is provided with alongitudinally slotted bushing 13, whereby passages are provided for air supplied through the pi e 11 to the interior of the receptacle 1. he pipe 10, 11 is supported from the 'cover 4 by means of a collar 14 secured to the branch 10 by means, of a pin 15 and provided with spider arms 16 each carrying a sleeve 17 land adapted to abut at its upper end against the ring 6. Bolts 18 extending through said sleeves,l secure the collar 14 and arms 16 and the parts supported therebyto the ring 6, n In practice, the receptacle 1 will be placed beneath a sand bin and the sand chute will'discharge inte the 'cupped top of the tank, whence it may bev delivered through the valve 8 into the latter. e

19 denotesan outlet connection which is secured to the central vportion, of the bottom 2, as by means of a fiange 19a and bolts 19".

with a 'flange 22a by which it is supported on top of the head 21, the bottom of the connection 19 being recessedffor the reception `of such flange.. The passageway 22b through the nipple is ared fromthe top to the bottom whereby the cross-sectional area of said passageway increases from the inlet end to the `delivery end' thereof, and clogging v of the passageway isv prevented.

A pipe 23 which is connected to the'valve `.casing 12 'discharges into the passageway 2lb. Immediately in; frontgjoi` the connection between the pipe 23 and the passageway 2lb, the latter is provided with a downwardlyV 1nclined baffle 21e, the lower end whereof terminates substantiallyrlueh 'with the bottoni ofthe nipple 22. This baHie is generally tri- "angularlinfsection,:increasing in width towar'dthejnipple 212. i n

`The pipe`"24,extendingfrorn the valve cas- :12, eominunicateswith the passageway 21?. Secured` toI the diseharge portion ofthe blast head is a nozzle2`5, said nozzle havinga eentral passageway afi'nergi`ng 'at its rear V"or l 'rec'eiviiig' end witha flaring mixing pasing' in close proximity to they partition 21C. The nozzle 25" is detachably connected to the *head by means of lugs or earsV 2lb on the head `ra`nd` similar ears v(not shown) on the nozzle. A sand blastA tube or hose 26v is detachably connectedtothe delivery end4 oit the nozzle Cooperating witlrtlie pipes l0, 11, 23 and A24 isf afvalve, thefcasing whereof is indicated lf jeherally at 12. The valve comprises, in addition to saidcasiing, an interior rotatable sleeveprovide'd`V with partitions and having ports 'inf the casing insuch nianner as, by rotation of" ysaidl sleeve, to supply air under pressure through the lpipes 10, ll and thro'igh theyalve 8 to the interior of the tanlr 01"" receptaclel thereby to produce a .pressure uponthesand therewithin; to supnply'afir. through' the pipes 23 and 24 to the rsand blast head; to'cut off the supply of air through'l the pipes ll0 and 11; to rcut off the "supplybf air through the pipes 23 and 24;

vent the tankgcut 0H2 ythe supply through the 'pi`pef28,` and to allow thea-ir' in the last mentioned pipes to 'be vented to the atmosphere,

thereby toreinove any obstructions that may be 'these*"lines. y

The cylindrical casing body 12 lis provided f apairfofheads I29 and 30 secured to o'p.'p'vosite'7 ends thereofgthe head 30 being prof ded with"ajpacking gland `3Oil through "'vvhieh ithere extends' an operating handle '3l .projectiiigfroin theI` adjacent head 3.2aM ofthe trotarysleeve32. inner end of the'han- 'jdle31 1s enlarged,f"'as shownv at 31a, and packr.' i371? 'is interposed 'between y such fr, enlargement and 'the interior surface of the gland '303.

"sageway 25h," the i'ear'ei'id/of said'nozzleibe- *20 i i portsadapted to register with corresponding The valve easing 12 is pr'vided l"with a threaded 'connection 33 in the Lupper portion thereof for the pipe 28 and with threaded connections 34Mand 35f inthe lower vportion thereof for the pipes 2.3 and 24 respectively. It is also provided at the end opposite the connecti'oni35 and in the lower surface portion thereof with a vent port 36. In addition, the casing i-s provided at one side with a threaded connection 37 for the pipe 11.

The rotary cylindrical valve 32 tits within thecasing l2 and is provided at the end opposite the head 32a with a head 32h. A

Z-shaped partition extends across the valve4 32. This partition comprises a central lon" gitudinal wall 38 extending inF ig. 7 from the top' tothe bottom of the valve, a transverse wall 39 extending from one end of saidy vpartition to the inner'wall of the valve on one side of the' wall 38 and a transverse wall 40' extending from the opposite end of the wall 38 tothe other side of the inner wall'of thevalve. The partition comprising the walls 38, 39 and 40 divides the valve into noncommunicating portions. valve is provided on one side of the wall 38 with a port`41 adapted to register with the casing connection'37v from which the pipe llrleads to the valve8, (see Fig. Y9). This vportv is 'of considerably greater angular 'extent than the bore of connection 37, for 'a purpose tofbe describedfhereinafter. On the opposite sides of the wall 38 the valve is provided witha port 42 of greater angular extent than port 4l,` the purpose of which will be described hereinafter.V

By reference to Figs. 7 andlO it will be seen that the valve is provided with an elongated port j43 and a shorter port 44 adapted to register with the connection z34 from which the 'pipe 23 extends and, by reference to'Fig. l2, it will be seen that the casingisprovided with an'elongated port 45 and a shorter port V46 adapted to register with the outlet connection 35 from which'vv adapted to register with thevent connection 36, (see Fig. 8).

It will be understood that the sectional views 'shown inv'Figs. 8 to l2 inclusive show the positions of the ports and connections `corresponding to one position of the valve within its casing.

With the parts `constructed and arranged as described, theoperation will be as follows Assuming that the valve is closed and is The i being turned in the directionindicated by the arrows to bring the respective parts thereof in register with the corresponding casing connections, air will first be admitted to the interior of the valve through theport 47 and pass through the portf41, pipes 10, 11 and into the valve 8, lifting andclosingthe latter and creating a feeding pressure in the tank. Further rotation ofthe valve will supply air through the port and pipe 24 to the passageway 21d beneath the partition 21. Still further rotation of the valve will supply air through port 43 and ypipe 23 to the upper passageway 21b above the partition 21C. The pressure within the tank A(say sixty pounds per square inch) will maintainthe valve 8 closed and'will force the sand through the port 19c and nipple 22 on top of the shelf provided by the upper side of the partition 21. The sand accumulating upon the shelf will be swept away byr the comparativelyL slow movement of the air supplied through'the pipe 23. As it passes beyond the discharge end of the shelf, it is caught by the air under high pressure supplied through ythe pipe 24; the sand and air are mixed in the chamber 25b and are conducted through tlie nozzle and the hose `25 to the point of use. By a further rotation of the valve, the supply throughv port 41 to j the valve 8 and the tank is cut off. 'f

By this timel the port46l is registering tion ofthe valve brings lthe vent port 48` of:

the valve into register with the connection 36 and further opensthe'vent port, allowing the air in the tank to be discharged into the atmosphere, at which time the valve 8 will open by gravity. Some air is still owing through the port 48 (which is nowclosing) and the valve body and through the ports 44 and 46 into the pipes and` 24. Because of the restriction presented bythe nozzle 25, a large proportion of air supplied through these pipes will blow back through the nipple 22 and passageway 19 into the tank (which is now open to the atmosphere), thereby dislodging any material which may tend to accumulate within these parts. v Still further rotation of the valve closes the port`47` andthe tank may thereupon be recharged with sand and thevoperation repeated.

y Having Lthus described our invention, what we claim is 1. The combination, with a tank havingV an inlet in the top thereofandan youtlet* in the bottomthereof', of a sand blast head havingan upper and a lower,passagpwa'yr for pressure fluid. and` communicating with said outlet, a valve casing, al pressure-fluidk supply pipe connected to said casing1 a pipe v leading from said casing to and within said ye.A

passageway! of said head, and a valve kwithin said casingadapted to distribute air from the first mentioned pipe to the three last mentioned pipes, said valve and said casing being provided with vent connections where- `by rotation of the valve will vent the vsaid tank. o

2. The combination,v with a tank having an inlet vin the top thereof and an outlet in the bottom thereof, of a sand blast head having an upper and a lower passageway for pressure fluid and communicating with said outlet, a valve casing, a pressure-fluid supply pipe connected to said casing, a pipe leading from said casing toand within said tank and having an upwardly7 extending ,portion in axial .alignment with the inlet,

an upwardly seating valve reciprooably mounted on the upwardly directed portion yof said pipe, a pipe leading from said casing to the upper passageway of said head, a pipe leading from said casing tothe lower passageway of said head', a vent connection for said casing, and a rotary valve in said casing having ports cooperating with said pipes and said vent connectionwhereby, through the rotation of 'said valve, the pressure fluid supplied from the first mentionedpipe may be'delivered successively to the tank, to the pipe communicating with the lower portion fof lthe head, the pipe communicating with the upper portion of the head, the pressurefluid cut olf from the second pipe, the

pressure vin the tank vented through the second pipe and the vent connection, and the pressure in the third and fourth pipes may beblown backwardly from the head into the tank to prevent clogging of the outlet.

` 3. The combination, with a tank having an inlet in the top thereof and an outlet in the bottom thereof, of a sand blast head having communication with said outlet, a valve casing, a pressure-Huid supplypipe connected to said casing, a pipe leading from said casing to and within saidtank and having anupwardly extending lportion in axial alignment with the inlet opening, an upwardly seating valvereciprocably mounted on'the upwardly' directed portion of said pipe,a pipe leading from said casing to said valve, the pressure fluid supplied from the rst mentioned pipe may be delivered successively rto the tank, to the pipe communicating with the head, the pressure fluid out oii' from the second pipe, the pressure in the tank vented Ithrough the second pipe and the vent connection, and the pressure inthe third pipe may be blown backwardly into the tank through the head to prevent clogging ot the outlet. y

4. The combination, with a tank having an' inlet in the top thereof and an outlet in the `bottom thereof, of a pipe extending from said casing into said tank and discharging Ithereinto and having a pipe eX- tending from said casing into said tank and discharging thereinto having an upwardly directed portion in axial alignment with the inlet, an upwardly seating valve slidably mounted on such portion of said pipe and adapted to open and close the inlet, a pressure-fluid supply pipe communicating with said casinga pipe leading 'from said casing to said head, and a valve in said casing having a venting port and additional ports so arranged that,` by rotary movements oi said valve, it. is adapted to supply air under pressure from the second mentioned pipe simultaneouslyl to the first and Vthird mentioned pipes, to vent the tank through said first mentioned pipe and the vent port ot the casing, and lto cut oit the supply to the third mentioned pipe. y

5. rlhe combination, with a head having an upper passageway and a lower passageway with a partition between said passageways, of a nipple projecting into the upper passageway above said partition, a baille eX- tending downwardlyT within the Aupper passageway and located rearwardly of' the nipple, the lower end yot' saidkbaftle being substantially flush with the lower end of the said nipple, a pressure-Huidpipe communi'- cating'with the rear of' the upper passageway, a pressure-huid pipe lcommunicating with the rear oit the lower passageway, and a nozzle common toboth passageways.

6. The combination, with a head having an upper passageway and a lower passageway with a partition between said passageways and a passageway communicating with the upper passageway between the front and Jthe rear thereof' and and above said partition, of a tapered baiiie extending downwardlywithin the upper passageway and located rearwardly of the third passageway, a pressure-fluid pipevcommunicating with vthe rear of the upper passageway, a pressure-fluid pipe communicating with the rear ot the lower passageway,and avnozzle common to both passageways. ,y

7. Thecombination, with a head having an upper downwardly inclinned passageway and a lower upwardly inclined passageway separated by a partition, of a nipple proj ectinginto the upper passageway and above the said partition.y an upwardly and rearwardly flaring baille located at the rear of said nipple, a pressure-huid pipe communieating with the rear of the upper passageway, a pressure-fluid pipe communicating with the rear of the lower passageway, and a nozzle having a rearwardly flaring inlet and located in advance ot said partition and communicating with the delivery ends ot both passageways.

8. The combination, with a head having an upper downwardly inclined passageway and a lower upwardly inclined passageway separated by a partition, the upper passageway diminishing in width from the central portion towards the opposite ends thereof, of a nipple adapted and arranged to discharge material upon said partition at the central portion of the upper passageway, said nipple having a bore increasing in diameter from the inlet to the delivery end thereof, an upwardly Haring baiiie extending rearwardly from said nipple, a pressure-duid supply pipe communicating with the rear end of the upper passageway, a pressureiiuid supply pipe communicating with the rear end of the lower passageway, and a mixing nozzle'communicating with the delivery ends of both passageways.

9, The combination, with a head having an upper passageway and a lower passageway separatedby a partition, a sand supply nipple projecting into the upper passageway and vhaving therein, a passageway of increasing cross-sectional area from the inlet to the delivery end thereof arranged to discharge material upon said partition, a pressure fluid supply pipe communicating with the rear end of the upper; passageway, a pressure iuid supply pipe communicating with the rear end of the lower passageway, and a delivery connection lcommunicating with the delivery ends of the two last mentioned passageways. i

10. The combination, witha tank having an inlet andan outlet for sand and a valve arranged to close the inlet by the pressure of fluid within said tank, of a sand-blast head communicating with said outlet, a valve casing having a venting port, a pipe extendingfrom said casing to said tank and discharging thereinto thereby to close said valve and create a feeding pressure within said tank, a pipe extending from said casing to said head, a pipe for supplying pressure fluid to said easing, and a valve within said casing adapted by its movement to supply the pressure `fluid delivered thereto to the'rst-mentioned pipe, to the second-mentioned pipe and the sand blast head, to vent theA said tank rthrough the first-mentioned pipe and the venting port, and to deliver pressureffluid'through the second-mentioned pipe vafter such venting operation.

' 11. The combination, with a tank having an inlet and an outlet tor sandk and a valve arranged to close the inlet `by the pressure of fluid Within said tank, of a sand-blast head communicating with said outlet, a valve casing having a venting port, a pipe eXltending from said casing to said tank and discharging thereinto thereby to close lsaid valve and create a feeding pressure Within said tank, a pipe extending from said easing to said head, a pipe for supplying pressure fluid to said easing, and a valve Within said casing adapted by its movements to supply the pressure fluid delivered thereto to the first-mentioned pipe, to the second-mentioned pipe and the sandblast head,- and thereafter to cut oit' the supplyvto the firstn'ientioned pipe, 'to vent the said tank through the first-mentioned pipe yand the venting port, .to supply pressure uid through the second pipe, and to cut off corninunieation` between the third-mentioned pipe and thecasing.

In testimony whereof, We hereunto affix our signatures. y

`- u EDWARD J. MOORE.

K'RAYMOND H. MOORE.

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