US1547802A - Stucco-applying device - Google Patents

Description

lJuly 28, 1925.

H.'M. GASSTROM STUCCO APPLYING DEVICE Filed March 18 1922 3 Sheets-Sheet 1 July 28,' 1925. 1,547,802

H. M. GASSTROM STUCGO APPLYING DEVICE Filed March 18. 192.2 I 3 Sheets-Sheet 2 A T'TORNEY.

July 28, 1925. 1 1,547,802

H. M. GAssTRoM S TUCCO APPLYING DEVICE Filed March 18. 1922 3 Sheets-Sheet 5 ummm mmm vu/fe/ffrff? /7 653.5770 INVENTOR' A TTORNE Y.

Patented July 28, 1925.

UNITED `sTATl-:s PATENT OFFICE.v

HERMAN v(lA-SSTROIM, 0F MOUNT VERNON, NEW YORK, ASSIGNOR TO MASTER RULE MFG. CO. INC., OF NEW YORK, N. Y., A CORPORATION 0F NEW YORK.

STUOCO-APPLYING DEVICE.

Application led March 18,1922. Serial No. 544,838.

To all lwhom t may concern.'

Be it known that I, HERMAN M. .GASS- 'rnoM, a citizen of the United States, and a resident of the city of Mount Vernon, in the v county of l/Vestchester and State of New York, have invented certain new and useful Improvements in Stucco-Applying Devices, of which the following is a specification.

This invention relates to a device for applying plastic materials4 such as mortar to walls or like surfaces, and it more particularly appertains to a machine for throwing the finish coats upon stucco work.

The primary objectof t-he invention is to provide an improved device of the character described for spattering a cement wash on to stucco walls, in a manner superior to manually applied dash-coatings both with regard to rapidity and appearance of the finish as well as economy of materials used.

Another object is to produce a device of the nature set forth wherein the material to be thrown is fed onto a xed element acted upon by resilient individual members having each a scraping contact with ,this element whereby they become flexed, successive liberations of the tensioned members occurring suddenly and causing them to swiftly project outwardly the material propelled by the same, with the least loss of imparted momentum.

A further object is the production of a device of the type specified including a feeder arranged to exert a preliminary drawin as well as agitating effect on the materia handled, prior to placing it on the before named fixed element in position to be acted upon by the throwing members previously referred to.

Still another object is the provision in a device of the class mentioned of means subdividing the same into a plurality of compartments so correlated that the material in transit always passes thru their lower portions from' one to the other.

A still further object is to furnish a device of the kind referred to, the operating elements whereof can be quickly removed for cleaning, inspection and repairs, or renewal of`worn out parts.

An'additional object is to Supplya practical device of the genus alluded to, composed of few and simple elements, of light but strong and durable construction, readily Aing order, besides amenable and arrangements of parts hereinafter de`l scribed in their preferred embodiments, pointed out in the subjoined claims, and illustrated on the annexed drawings, wherein like parts are designated by the same reference characters throughout the several vlews.

Generally described, the invention under consideration includes in its organization a vportable casing partitioned at one side to provide an open compartment adapted to contain a revolvable mortar-throwing member. The latter is composed of subdivided resilient, radially disposed 'blades having during part of their travel a chordal scrap- 1ng contact with an apertured plate, that constitutes the bottom of the compartment and thru which is fed the plastic material to be spattered on the surface under treatment. The resilient. blades, as they pass over the feed plate, first become tensioned and then are suddenly released, which causes the material dragged forwardly thereby to be swiftly projected out of the before mentioned open compartment, in front of the casing. Below the above named bottom plate is a chamber, housing a rotatable feeder that not only delivers a predetermined quantity of material but serves also to keep it stirred up and exerts a drawing action upon the material moving thru a contracted controlling passage intervening between the chamber last referred to and a hopper in which the plastic material is deposited. .Means are further provided for actuating the throwing member and the feeder at selected ratios of speed.

The advantages of the invention as here outlined are best realized when all of its features and instrumentalities are combined in the one and same structure, but, useful devices may be produced embodying less than the whole.

It will be obvious to those skilled in -the art to which the invention appertains, upon from the near or right-hand side thereof;

Fig. II is a view ofthe front ends of the same,looking towards the right of the pre-` ceeding figure;

Fig. III 1s an enlarged longitudinal sec'- tion taken on the line III--III of Fig. II\

looking in the direction pointed out by the p arrows;

Fig.'IV is a horizontal section taken on the line IV-IV of Fig. I, looking downwards;

and Y Fig. V is a similar section taken on the of the last named figure, viewed in the direction of the arrows thereto apperopening taining.

Referring nowl tothese views for a detailed description of the invention, the reference numeral 11 denotes a casing presenting a substantially L-shaped or angular outline when viewed from the side thereof according to Fig. I. The interior of this casing is partitioned off to provide a mortar receiving hopper 12, a compartment 13 housing a mortar throwing member, a feeder containing chamber14, and a flow vreducing passage 15, intermediate thelatter and the hopper. Of these different divisions, .the said hopper 12 is bounded by rightA and left side walls 17, 18 and by approximately vertical front and rear walls 19, 20 respectively. The side walls 17, 18v which are common to the various compartments and chambers, terminate together with the front and rear walls 19, 2O of the hopper at the upper end thereof, the latter being open and provided with a beading 21 around the same.

The compartment 13 located in front of and below the hopper 12, is also inclosed by the said walls 17, 18 Aon its sides, being defined above and below by horizontally extending top and bottom walls 23, 24, which together with the side walls end at a vertical line, thereby affording a similarly disposed that may be reinforced by a beading 25 therearound. A semi-circularly forme partition 26 running from a corner 27 where the exterior walls 19 and 23 meet toi a point 28 locatedabout on level with the bottom wall 24. At this place the said partition is provided with a vkeeper 29 adapted to receive one edge of a detachable foot plate 30, which will be more fully hereinafter referred to. The other or front end of this plate overlies and is secured to the said bottom wall 24 as by means of a screw bolt 31.

It will be perceived upon inspection of Fig. III,'that the said keeper 29 consists of an integral partof the lower ortionv of the artition 26, which is folde upon itself 1n -S-formation to constitute a continuous retainer between the upper and intermediate transverse stretches thereof. These folds imp art a considerable rigidity to the said partitions lower portion, which materially assists in carrying the said plate 30 as well as v resisting strains incidentally imposed thereon. In order to securely tie together the partis tion 26 and'the'side walls 17, 18, the opposed edges of the former are provided with anges as indicated at 33, thru which and the casing walls are passed rivets 34. It will vbe noted with particular reference to Fig. III, that the intervening part of the said lower portion which is tangent to the partitions curvature and the keeper 29 runs substantially straight as represented at 36, for a purpose .that will be later pointed out. The walls that compose the chamber 14 disposed`- underneath the compartment 13 are the lowermost portions of the sidewalls .17, 18, which form the ends thereof,'while a scoop or lobe-shaped wall 38 constitutes the front and bottom of the said chamber.

Reaching from the bottom 'cornerv of the rear wall 20, in a direction tangential to the curved lunder-surface of the said wall 38, is a downwardly slanting wall 39. The latter is spaced a certain distance from and in parallelism with the above mentioned wall 36, so that the. constricted passage 15 before referred to is formed intermediate'of the bottom of the hopper 12 and the side of the chamber 14, in rear of the compartment 13. The entire f orce of the flow due to the weight of the mortar or plaster contained .in the hopper is thereby revented from crowding into the said cham er any faster than it is expelled therefrom. The partition, the plate and the various walls of the casing are preferably made of galvanized sheet iron, and the outer or abutting` edges thereof may be joined by exteriorly disposed seams 40, (see Fig. I).

Within the chamber. 14 fis operatively maintained a feeder 42 which may be constructed with a plurality of rigid wings 43, four of which have been represented in the present embodiment of the invention. These wingsl as shown, form between them substantially right angular pockets, and are fastened to the sides of the spindle 44 as by screws 45. The former may be of square cross-section so as to affordan adequate bearing surface for the wings, which inci- -dentally are made to abut one against another to increase their interrelative stiffness. The extremities of the said spindle 44 are of round or cylindrical formation as indicated at 46, being rotatably carried in hubs 47, 48 of bearings which are secured by their flanged portions 49 to the. opposite lll) - ramena ends of the chamber 14. Of these bearings, the one which Jis located onthe near side of the casing may be detachable. The adjoining end of the chamber has preferably provided therein a star-shaped opening 51 (Fig. I) of a size to permit the wings of the feeder to be passed therethru after a collar 52 set-screwed to the other extremity of the spindle 44 has been removed to allow the feede-r in its entirety to be withdrawn from the chamber for purposes ofinspection, cleaning or repairs. On the opposite or proximate extremity 46 ofthe said spindle is held a gear 54 as by means of a set-4 screw 55 threaded thru the hub portion thereof. This gear and the said collar 52 keep the feeder 42 in axial alignment with respect to the bearings 47, 48. The means for setting thel said gear 54 and the therewith connected elements in motion will be referred to farther on.` t

In the before described plate is provided a plurality of spaced apertures 57 located directly over the longitudinal centre of the feeder 42 (Figs. III and IV) and disposed in a row with stretches or bridges tures.

58 o-f the metal from which the plate is made intervening between the several aper- The function of the feeder is not only to force the mortar or other mixture in predetermined lquantities upwardly thru the said apertures 57, but. during its revolutions it serves also as an agitator, by keeping the mass in the chamber 14 properly stirred up. By the simple expedient of .providing plates having different sizes of perforatio-ns, for interposition over the said feeder, the amount of mixture elevated thru the said apertures can be changed to suit various Work- 'ing conditions. The mortar as it is raised up,

welters over the edges of the apertures, forming small mounds B which are separate one from the other due to the distances between the said apertures. During the revolving motion of the feeder 42, the same not only acts to draw positively thru the contacted passage 15, part of the material flowing or sliding thereinto from the hopper 12, but its wings further serve to retard this material and prevent the same from seeking its way directly out through the apertures 57. The consistency-of the matter supplied to the chamber and thence carried up thru the feed platel 30, is therefore main-.-

shaft 61, becomes such that the said blades are enabled to fliberate themselves vtheir free ends snap or ily out swiftly after tained uniform at all times.l

Concentric with. respect to the partition 27 as well as central relatively to the top and bottom walls 23, 24, respectively, 1s arranged within the compartment 13, a mortar throwing member 60. In'the present exemplication of the invention, this mem# ber comprises a shaft 61 journalled in bearings 62, 68, which are attached to the sides 17, l?, respectively, ofthe casing. Upon the said shaft 61 are mounted spiders 65,'

66 having hub portions 67,. 68, holding-them l in spaced relation to the interior faces of the sald sides 17, 18. vSet screws 69,70,

threaded each thru said hubs 467, 68, dis-v l connectably secure the spiders in their assigned position upon the shaft 61. The said spiders have been given the contours of irregular decagons, that is, the sides 72 thereof, instead of being as usual, for regular ten-sided polygons, 72 to lines radial to their-corners, are 90 on one and 54 at the other corner, while the center angles vremain as ordinarily is the case, 36. These figuresare only approximate and vother leg 76 of the angle piece is arranged to snugly hug the adjacent side. of the slot 7 3. To this latter leg is secured as by rivets 77, resilient blades78, in about three sub divided sections, contiguous one to another to each of the said angles 74. The distance from the 'center of the member 60 to the outer ends of the blades 78 is greater than the central height of the former above the plate 30. As will be seen with particular reference to Fig. III, these blades have their outer ends offset or bent forwardly to a slight extent as at 79, and are spaced so as lto clear the top wall 23 and. partition -27 of tured plate 30 thereunder, is retarded forl an instant, and has imparted to it a flexnre by direct contact with the plate, which flex- Iure increases up to a certain degree as the scraplng; or contact motion progresses. En-

ergy thereby stored up inthe individual blade sections durlng their tensioned or chordal travel, which may also be termed surface movement since these blades sweep clean a certain area in front of them, until the angle of inclination of the blades with the plate onthe forward side of a liuc passing thru the centers of the spindle 4-1- `and Then the manner of a freed leaf spring.

Concurrently with lthe movement of the blades,`the mortar or plaster which has been fed into the compartment 13, up thru the apertures 57 in the said plate 30, is dragged llO outwardly by the moving blades 78, until,

the latter as before stated are suddenly .re-

leased but the releasing moment occurs prior to the material being pickedl up by the said blades. At such times as this liberation occurs for each successive blade, the mortar is catapul'ted forwardly out of the vertically facing opening of the said compartmentv upon the wall or other surface that is being treated or dressed. By virtue of the offsets l79, the material thrown forwardly outward is raised sufficiently high to clear the lower outercorn of the said opening. One set of the bladesv78 is brought 1n contact with the vbottom plate 30, before the set in advance thereof as become released.. The arrangement of the said blades is preferably such,-

' tween any one of them and the said plate.

Under normal or average working conditions, the blades of the throwing memler GC, as they sweep forwardly over the feed plate, act to scrape. ofi' all of the mortar that has come up thru the apertures 57. winch latter are vdisposed vin pairs opposite each section of the said blades. In case of excessive wear on the free terminals of the blades 78, the

angular anchorage pieces 74, can be set out by interposing shims between their undersides and the outer faces of the sides72 of the spiders 66, the screws 75 being capable of holding the shims as well as the said angulark pieces firmly in position.

At the near end of the shaft 61 for the throwing member, is afiixed beyond the bearing 62 thereof, a gear 81, as by a set-screw 82 or the like. The said bearing 62 which preferably consists of a comparatively heavy strap is held to the outer face of the side wall 17, by rivets 83 or other suitable means. From this strap bearing projects out a stud .y 85 upon which is revolubly carried the hub of a gear 86 having its teeth in meshing uw gagement with those of the before mentioned gears 54 and 81. Motion may be imparted to the driving gear 86, by means of a handle 88 fixed to the free extremity of a crank arm 89, the other end whereof is secured as for instancev by screws 90 to the outer or near side of the said gear. Altho the working parts of the device have been represented as manually impelled, obviously any other mode of driving the same can be substituted therefor. In order to maintair the gear 8G endwise upon the stud 85, the latter 1s tapped axlally for a screw 92l arranged to atrasos bold` an underlying washer 93 up against th arm 89, `while still permitting turning thereof.

The proportions of the gears 54 and 81 are such that in spite of the feeder having four wings 48 and the mortar throwing member, ten blades 78, the interrelative movement between the said blades and wings is unitary, or in other words, they travel in unison, one feeds while the other is removing the materialV handled.

At 95 are-shown ears attached to the longitudinal sidesl 17, 18, adjacent to the edge of the top or filling opem'n i of the hopper 12. A bar 96 of wood or ot er appropriate material is made to reach between these ears so as to constitute a carrying handle for the device in its entirety. Notwithstanding that this handle has been represented 'in a particular position relative to the hopper it will be understood that the former may be located at any suitable place for the opera-4 tors convenlence.

In describing the use of the device, it is sufficient to point out in conjunction with the foregoing, that the hopper 12 is charged with a certain quantity of the plasterous compound of grue-l-like consistency which is to be applied as a finish coating to an already existing stuccoed .or mortar covered wall. The stucco wash flows down into the chamber 14 thru the contracted throat 15 which prevents an undue overcrowding or choking effect in the chamber. The operator in working this mortar throwing or spraying device, as it may also be termed, holds it with one hand against his body by the bar 96, so as to afford it additional support, while standing on the ground or mounted on a ladder, scaffold and the like, maintaining the vertical discharge opening from the compartment 13, a few feet away from the surface under treatment. Then by turning the crank-arm S9 in the direction of the arrow D, the person manipulating the device imparts motion to the feeder 42 which brings the mixture up thru the feed controlling apertures 57, as well as to t-he throwing or mortar spattering member 60, the blades 78 whereof act in rotation upon the mortar mass as it welts or heaves over the edges of the said apertures. These blades after they have become tensioned by contact with the apertured plate 30, push the stuccofinish before them until the moment of liberation occurs when they fling forwardly outward the material wherewith the wall o1' l other surfaceis .to vbe dressed. When -thefdee' vice is to'be 'cleaned or inspected, .it'i-s an easy matter to loosen the screws 69, 70, which. Aenables the shaft'l with the gear-81 at its' extremity to be withdrawn. Ina like mannerbysim'ply removing the lcollar 52, the

- feede1-'42fm'ay be retractedffrom` itscham- `ber thrul the opening 51, thereby enabling-l both of thes elements 'as well as the interior of. the casing s various divisionstoberinsed. particles lof mortar lor plaster..

free from mixtures. i. l

jWhile a certain preferred embodiment of 'this device has been shown and describe-d,

it will be understood that changes in. the

-form, arrangements, proportions, sizes fand. details thereof may be madc,without del parting from the scope of the invention as defined by thev appended claims.

Having described my invention what `I desire to secure by Lettersl Patent and claim, is:-

' l. Av device of the character described including a relatively stationary plate in to which the material is fed upwardly, a superposed throwing member having blades ex-v ceeding in length the dist-ance thereof at the center from said plate, and means for actuating said member.

2. A device of the character described 1ncluding a feed plate upon which the material is delivered from below,and a throw.V

ing member arranged substantially central-v ly over the place whereon the material isde- 4 ends of said blades being bent in the direction of their movement.

4. A device of the character described including a plateinto which material is fed upwardly, and a throwing member revolvliberated able over the same, said member having resilient blades positioned to be iiexed by contact with said plate and then suddenly prior to lifting the material ofi'l the latter. Y

5. A device of the character described including a plate upon which matte-r to be spattered is fed from below, and a throwing member in a real scraping contact therewith for part of its travel, said member having a resilient blade adapted to store u energy through iiexion directly with said plate while pushing the matter in 'front thereof and subsequently to spatter the latterwhen released so as to utilize the stored-up energy. 6. A device of the character described in cluding a casing provided with an outlet throwing member in said casing-.designed t0 f tered through said outlet, saidmember hav-v act upon the matter so that itwill be spate.4 a

ing subdivided .blades arranged 'contiguously' 1n a -row facinglthe .opening trans#A versely thereof, and thesubdivisions of' said blades being yieiddble independentlyof one Y through, and a throwing membef injsaid,v

casing havingblades with offse'tends-dicluding a-'casingprovided with a-delivery- 'opening for ,materialto be catapulted thererected upwardly'opposite said opening, the

vsaid vends acting tojgive an elevated trajectory ofthe catapulted material.

. 8. A device of the character fdescribedfin 'I cluding a casing formed withl an-"outlet-'for matter deposited therein, amember having blades the -lower 'ends whereof are designed to throw-the matter through vsaid outlet, and

a plate provided lwith an aperture serving".

to deliver the 'matter in comminute'dform upwardly against said blades.l

9.v A device vof the character described yincluding a container for material to bel spattered,' a throwing member having sectional blades designed to act upon the material,

and a plate interposed between' said container and the'undersideof said member provided with openings and -intervening bridges .arranged in spaced relation opposite the blade sections, the lower ends of the lat- -.substitution of plates with openings of different sizes whereby the quantities vof ma- 'ter acting upon. the material rising through V los terial supplied therethrough to .theV throw- I ing member can be varied.

y11. A device of the character described including an apertured plate through which the material to be spattered is fed upwardly,

, a rotatable member above the same, a carrier on said member, and aplurality of divided blades secured. to said carrier in conti ous alignment thereon, saiddividedblades eing capable of yielding independently of one another'upon encountering obstructions inthe material.

12. A device of the character described .including a 'chamber containing material to be spattered, a compartment above the same, an apertured plate separating said chamber from .said compartment, a revolving feeder operating to lift part of the material up .through the apertures in said plate while retai-ding a portion thereof, and a meinber having blades adapted to throw beyond the compartment the mater1al heaving out of said apertures.

volving feeder in the latter functioned tov pass up the material throughthe apertures in said plate, and a bladed member arranged to throw beyond the compartment the material coming out of said apertures, said feeder having wings forming right-angular pockets disposed beneath the plate and cooperating` with the said member thereabove by presenting to its blades a predetermined quantity ofthe material to be thrown out.

14. A device of the character described including a casing adapted to receive material to be spattered, a rotary member having a shaft supported from side walls of said casing. multisided spacing elements secured to said shaft inside said walls, carriers extending between said elements clamped thereto, blades affixed to said carriers`reaching towards the bottom part of the casing, and means for imparting rotation to said member to cause said blades to throw the material olf said bottom part.

15. A device of the character described including a chamber containing material to be spattered, and a feeder therein comprising a spindle, wings on said spindle armember above said feeder adapted to receive,

the material delivered upwardlytherefrom for the spattering operation.

16. A device of the character described including a compartment with an outlet opening in the front thereof, a bladed throwing member mounted for rotation in said compartment so that its lower portion will revolve in an outward direction relatively to said opening, a winged feeder revolvable with its proximate partv oppositely to said lower portionof the throwing member, and an apertured plate intervening between the latter and said feeder, the apertures in said plate directing the material set lin motion by the feeder upwardly intermediate of the blades of said member.

17. A. device of the character described including a chamber and a compartment having intercommunication through an apertured plate separating the bottom of the latter from the top of the former combined with an agitator in said chamber arranged to exert a drawing and lifting action therein upon material to be spattered and to feed the same up through the apertures in said plate, and a member mounted in said compartment in position to throw the material fed thereinto out of the same.

HERMAN M. GASSTROM.

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