Document Eq47agY3MpE8GDvBN0RMdzp8g

United States Patent Office 2,890,079 Patented June 9, 1959 hopper and associated parts which may be used in carry 2,890,079 ' ing out the invention. The invention is adapted for the coating of surfaces METHOD OF AND APPARATUS FOR SPRAYING such as beams, lathing, walls or ceilings, indica*.^ schclightweight Famous and granular 5 mattcafly at 10 in bie 1, with lightweight fibrous and PARTICLES granular mate.,.iis initially deposited in a hopper such as II. Suitable binding agents, coloring agents, or other Frank M. S:ampf, Elizabeth, NX. assignor to United States Mineral Woo! Company, Stanhope, NX, a cor* poration of New Jersey 10 addnttves may be mixed with the materials in the hopper 11 or prior to their being placed therein or mixed by simultaneously spraying binding and coloring materials Application July 25, 1957, Serial Na. 674,200 through nozzles 27. 2x. etc. as the materia! leaves hose : Claim. (Cl. 302--19) 22. The hopper may be of any desired design and may be provided with a suitable device :uch as a screw, spiral, brush or other metering device, operated by band or This invention relates to the method of and apparatus 13 motor driven. The metering device shown in the draw for spraying fibrous and granular materials, such as min ing by way of example, is a screw, spiral, brush or the eral wool, glass wool, rock woof, asbestos, paper, cotton like 12 (Fig. 5) disposed in hopper H above the hopper {inters, expanded mica and polite and binding and other opening 13, and which may be motor driven, metering agents, onto a surface to be coated therewith. the fibrous and granular materials from the hopper Pursuant to the invention, the materials to be sprayed, 20 through the open, lower end 13 thereof, and thence which are light in weight, arc delivered, through an air through an aperture 1C of a casing member 14 (whose lock, directly to a straight pneumatic line for movement ends may be closed by plates 31, Fig. 3) and into -the to a discharge member, such as a hose, for controlled dis- feeder 15 (Figs. ! and 2). The feeder 35 may comprise, charge to the surface to be covered. The fibrous and ^-as shown in Tig. 2. a wheel having a plurality of elon- granular matcriali arc initially deposited in a hopper and gated blades 16 rutl.aily arranged on a hub 18 so as to metered therefrom mio the pneumatic pressure line while define a plurality oi pockets 17 to receive the particles preventing the escape of the pneumatic pressure medium .so metered ihmupli tin: aperture 19 between the hopper mm the hoppci. The uivcmum enables pticuomUe spray- mid ieedri. I he leedoi may he of any other form tie- mg ol gueli uuiertaU hum u hopper -outec which nay *.iivd; rite ptrJ.vh 17 m-: v.-rially moved Info lie wnh be located at a considerable distance from the surface :,(l the apcrtuic 19 ol casing 14 registered with (lie lower to be coated thereby, the material being carried in a end J3 of hopper II. The hub 18 of the feeder may be pneumatic stream and to the surface to be coated, with driven by suitable r.K.cns such as a motor 20 (Fig. 3) out loss of pressure. to whose shaft the hub may be keyed. The invention has miny advantages over methods On being thus rotated, the feeder pockets 17 will be b.creioterc used lor coating vertices, including me follow seriniiy iiiieti ami men scriaiiy moved past the aperture ing: The feed rate is increased many times and loss of 19 of the member 14. out c` registry therewith and into pressure is prevented; thus die invention permits the use registry with a -usee of gas under pressure 21 (Figs. 1 of hose lengths in multiples of lengths feasible in conven and 2) located . position out of registry with aperture tional systems, permits the projection of the material to be sprayed to greater lengtits (fur walls) and heights in 19. The filled wkets 17. moving serially into align ment with the pneumatic line 21. the particles in s.uJ (for ceilings) than attainable with prior equipment and pockets are thus pneumatically borne therefrom and into methods; equipment embodyiog the invention may be op a conveyor 22 aliened will, the point of discharge of said erated at a fraction of the horse-power required in con gaseous slicum final -aid pocket (Figs. I and 2). The ventional procedures for the purpose. The use of metal pans which may wear out is obviated, and very little 45 conveyor 22 ma~ be oi anv desired type, for conveying the material to the mui.u-c to he coated. It may be flexi .5ire<$ or strain in operation is encountered so that th: ble. if desired, tor manipulation (ns indicated in Fig. IT procedure of the 'invention is essentially loog lasting and by the operate*! !o t*- --1 me gaseous slieam so cair}:ug foolproof in use and operation. The fibrous and granular .v.ij p.rtides ihioo--' suitable discharge bead 36 (big. materials to be sprayed arc more gently handled so that I ) and toward the -ml ,ce Id, they will not be broken, and belter coverage is attained, The pneumatic soutce 23 (Fig. 4) may bo any ap resulting in a tighter texture and better adhesion of the propriate means such a> a lan. a compressor or a super- coating material.. Less dust, waste and droppings occur chat per. which ai .... etui 24. may be exposed o than in procedures heretofore used for the purpose. Examples of practical procedures embodying the in vention are described below and in th? accompanying ambient air (where it is u, *:d to me ambient air as the gaseous medium). I lie gas sticam passes throne!) the member 23 ami i linu-m compressed nnu blown durimb drawings; (he invention is not limited thereto, but covers all other forms coming within the scope or purview of the pockci a* 7 ot tin; iccdcr 15 and. with the particle' thus cairicd. mow. thromih the conveyor 22 lor pro the disclosure herein. jeetinn onto the siu'.wv hi, big. I. It will l*c appic. tatcd In the drawings: Fig. I is an clcvational, partly fragmentary view of an no that by the above mentioned, ait air hid. i- provided. prevent)!' * an tioiit blowing back thmuyit tin apparatus embodying the invention. aperture 19 an.I m:o the hopper, and mainiainm- tin Fig. 2 is a perspective view of a feeder unit wl.j.it may pressure in the bn . the lower cud 13 of hopjvr 11 m.tj be used in said apparatus. simply rceister with ap.-imre of eastne 14 a-, in 1 i- ; Fig. 3 is an end clcvational view of *aid feeder unit, or (l ie. 5) the area oi -.aid lower end 13 of lire l.opp.-i with th- cover thereof removed for the sake of clarity, luav be adjustable !-. toe ol' suita'ile means, a- . uit.r taken at line 2--3 of Fig. 2, po-m:* a collar 31 l-:.wen the hover end I.* <*' hopp-.v II ami the aperture l` of casing 14. and prosi.hit.- ...to Fig. 4 is a perspecrive view of a typical blower unit collar with an apei'med plate 33 and slidable no-itionMiv which and r... may < be employed in carrying out the invention, . r------------- --------, ................... - .. ,.......... > 70 a ..eeond aperuncd plate 34 through a bcariut- 3? or. collar 32 and on the plate 33 so that, by rceipuvatmr 2,800,079 o4 tivc opening between the lower end 13 of hopper 11 and the aperture 19 of casing 14 may be controlled. Meter ing is a function of the speed of rotation of No. 12, and the size of opening of 13. Variation in feed rale may be accomplished by varying speed of member 12 5 a pneumatic line communicating with sail casing through one of said end plates, a conveyor longitudinally aligned with said pneumatic line and communicating with said casing through the other of sat'd end plates, a hopper dis posed above said casing and having an opening communi or varying size of opening 13. cating with said clongvc 1 aperture in *aid casing, a ma The materia! may be moistened as it leaves the con terial metering device in said hopper . 'r>cent said open veyor 22 or prior thereto by the provision of one or ing comprising a rotatable hub having a plurality of more suitable moistening nozzles, such as schematically equi-anguhrly spaced blades thereon, a slidable closure shown at 27, 28 (Pig. I) euimeclcif to suitable moisten- 20 plate fur .said aperture in said casing, a pneumatic pump ing sources, projecting moistening strc.ams 29, 30 into in communication with said pneumatic he, a material the material on discharc from the conveyor 22. Said moistening nozzles m.ght be disposed w.min the con veyor hose 22 instead of, or in addition to being located discharge nozzle on the end of said conveyor, and ma terial moistening nozzles located adjacent the first men tioned nozzle. on the outside thereof, as shown in Fig. 1. The wetted 25 mass is sprayed to surfaces, such as the surface 10 for the purpose of improving appearance, for structural pur Inferences Cited in the file of this patent UNI'l ED STATES PATENTS poses, for fireproofing, insulation, condensation control, acoustics, sound deadening, weatherproofing and for any ether desired purpose. I claim: In an apparatus of the character described, in combina tion. a material feeding means including a cylindrical casing having an elongated aperture in the upper wall portion thereof and disposed in parallel relation to the 25 axis of the casing, a circular plate removably secured to each end of the casiug, a hub rotatably supported in said casing, a plurality of cqui-angularly spaced blades projecting radially from said hub and extending substan- . lially the full radius of said casing, a direct drive motor supported on oue of said end plates for rotating said bub, 613,045 1,279,804 1,499,396 1,882,861 2,152,632 2,200,713 2.243,058 2,244,050 2,314,031 2,644.724 2.681,748 2,712.475 2,750,233 2,779,634 Pattberg______ .__----------OcL 25, 1898 Wclckcr________________ Sept. 24, 1918 Mueller_________ ----------- July 1, 1924 Moore_____ _____ -- - Oct. 18, 1932 Cnssicrc _________ ----------- Apr. 4, 1939 Erickson s .si.____ --------- May 14, 1940 Wysong______ ___ --------- May 20, 1941 Cassicre____ _____ 1941 Colburn_________ 1943 Kronstad________ ----------- July 7, 1953 Weller___________ 1954 Tukes____ _______ ----------- July 5. mss Ycllut___________ --___June 12, 1956 Atkinson ct al.___ --------- Jan. 29, 1957 June 9, 1959 f. m. stumpf 2,890,079 UEThs.? OF AND APPARATUS FOR SPRAYING LIGHTWEIGHT FIBROUS AND GRANULAR PARTICLES Filed July 25, 1957 5"H- 24-^Q , h. 5i-- /A r 20 #, La k I- - T^- 3Z- Kt INVENTOR /w*,iac ,W. iS ATTORNEY