US2163757A - Apparatus for weatherproofing composition board - Google Patents

Description

June 27, 1939.

n. s. MACLEAN r-:r n. 2,163,757

APPARATUS FOB WEATHERPROOFING COMPOSITION BOARD Filed Nov. 17. 1934 13 Sheets-Sheet l 1M 'ENTORS oer- .5.' Maclean ATTORNEY.

June 27, 1939. R. s. MAcLEAN er A1. 2,163,757

APPARATUS FOR WEATHERPROOFING COHPOSITIDN BOARD diaries K0. PQM

#M17 Tg RNEyf JHM 27, 1939- R. s. MAcLEAN er Al, 2,163,757

APPARATUS Fon wn'rnsnrnoorms courosrnon oAnD Filed Nov. 17. 19:54 13 Sheets-Sheet 3 INVENToRs. Ror @Haelen gur-s df. Raw

A TTORNEY.

June 27, 1939. R. s. MACLEAN Er 2,163,757

APPARATUS FOR WEATHERPROOFING COMPOSITION BOARD Filed Nov. 17. 1954 13 Sheets-Sheet 4 NVENTOR. jvert Maclean, BY C'zares /ZZa/d 7%@ y 24%...

TTRNEY.

June 27, 1939. R. s. MAcLl-:AN Er AL 2,163,757

APPARATUS FOR UIBATHERPROOPING COMPOSITION BOARD Filed Nov. 17, 1934 13 Sheets-Sheet 5 INVENTOR.

i@ Z Edert Maclean BY arles Z0'. Pollard ma@ A ORNE Y,

June 27, 1939. R. s. MACLEAN er 4u. 2,163,757

APPARATUS FOR WBATHERPROOFING COM10SI1'ION BOARD Filed Nav. *17. 1934 13 Sheets-Sheet 6 NVENTORS. fabi-.5 Maclean BY zarlas id, Palhd A TTORNEY.

June 27, 1939. R. s. MAcLEAN Er Al. 2,163,757

APPARATUS FOR WEATHERPROOFING COMPSITION BOARD Filed Nov. 17, 1934 13 Sheets-Sheet '7 INVENTQRS Roer- Malfa/v BY ck'l w Baard June 27, 1939. n. s. MACLEAN Er A1. 2,163,757

APPARATUS FDR WEATHERPROOFING COMPOSITION BOARD Filed Nov. 17, 19554 13 Sheets-Sheet 8 INVENTRS. t meaa ,rles W POM June 27, 1939. R. s, MACLEAN er AL 2,163,757

APPARATUS FOR WEATHERPROOFING COMPOSITION BOARD Filed Nov. 17, 1934 13 Sheets-Sheet 9 lid BY ya@ 7( l M f1 TTORNEY.

June 27, 1939. R. s. MAcLr-:AN El' AL 2,163,757

APPARATUS FOR WEATHERFROOFING COMPOSITION BOARD Filed Nov. 1'?. 19254 1.3 Sheets-Sheet 10 153 141 140 i L i Y 4M!V A I gg 4 j ,i l 1.512

June 27, 1939. R. s. MACLEAN Er AL 2,163,757

APPARATUS FCR WEATHERPROOFING COMPSITION BOARD Filed Nov. 17, 1934 l5 Sheets-Sheet 1l Bl/WWW A TTORNEY.

June 27, 1939. R. s. MACLEAN Er A1. 2,163,757

APPARATUS FOR WEATHERPROOFING COMPOSITION BOARD Filed Nov. 17, 1934 13 Sheets-Sheet 12 l N VEN TOR S. obenf 5. Maclean,

BY Za/'Zes ZU. Pa lard A T ORNEY.

June 27, 1939. R. s. MACLEAN Er AL 2,163,757

APPARATUS FOR WEATHERXROOFING COMPOSITION BOARD Filed Nov. 17, 1954 13 Sheets-Sheet 13 Patented June 27, 1939 PATET orricr...

mamar A- Y arraaa'rus Foa wnarnnarsoomo conros mon nom s. Maclean ma` charia w. rama. assixnors to 'Mastic Air- Ribbed 4 Michigan City. Ind

phalt Corporation, Michigan City, Ind., a corporation of Indiana Application November 11, 1934, Serial No. 753,412

Our invention relates to an apparatus for constructing building material and relates more specifically to apparatusIor constructing weatherproofed building material.

l The building material to which we refer is 'of the general type shown and described in the co-pending application of Robert S. Maclean filed November 16, 1931, and bearing Serial No. 575,449. v

.Theprincipal object of the present invention is to provide an' apparatus by the use of which it is possible to .takeinsulated board or composition board of any and all kinds and by a continuous process apply the weatherproof coating thereto.

l5 A further object of the invention is to provide apparatus of this type capable of lweatherprooiing composition board o r similar substance of any thickness, and also capable of applying a weather proof coating oi' any desired thickness.

go A further object of thepresent invention is to provide in an apparatus of the class described improved conveying means 'for carrying the mate-4 rial through the machine.

A further` object is to provide improved weathgy, erproof coating means' capable of applying a layer of a desired thickness to a sheet of composition board. v

A further object is to provide improved weatherproof-lng material reservoirs and treat- 30 ing means in association with an apparatus of the class described.

A further object-is to provide an improved apparatus for manufacturing a weatherproofed composition board that'wlll simulatebrick.

33 A further object of our invention is to provide a novel product in the form of a building material unit.

A further object of the invention is to provide a product of this type capable of being applied 40 to a building to cover the entire exterior surface thereof.

A further object of the invention is'to provide a novel building material unit s constructed that in applying the same to a building practically all .15.01 the material can be used in one place or another, thus entirely eliminating any waste in the application thereof. y

A great many other advantages and features will be found in the invention as' shown and de- 50 scribed; some of-the features of the apparatus reside in the specific construction of the heating means for the conveyor, thearrangement and means for heating and applying the weatherproong material, the means for applying the 55 weather-proofing grit, means for removing excess (c1. sii-431 grit and the means for feeding portions of the excess grit to positions at which they are utilized. A The above'and other advantages and features will be more clearly understoodin connection with the following description of one 'specific em 5 bodiment of our invention wherein reference is had to the accompanying thirteen 'sheets of drawings upon which such an apparatus has been illustratedftogether with the novel product that is manufactured thereby.

In the drawings: 4 Fig. 1 is a plan elevational view ol a sheet of ordinary untreated composition board such as celotex, of a size which it is desired to treat;

Fig. 2 is a similar view of the same sheet which 1li has been weatherprcofed in accordance with our invention and has been marked or imprinted to simulate brick work;

Fig. 3 is an enlarged cross-sectional view of the weatherproofed material taken generally on the line l-f-S of Fig. 2;

Fig. i is a side elevational view of the complete ap ratus;

Fig. 5 a longitudinal sectional view4 of the forward portion of the apparatus showing the loading platform and the initial conveyors;

Fig. 6 is a plan view'of the same portion of 4 the apparatus;

Fig. 'l is a side elevational view of that unit of the apparatus at which theweatherprooilng '30 material is applied:

Fl'g. 8 is a similar elevational view taken from the opposite side of the machine;

Fig. 9 is a longitudinal section of the same portion of the machine taken generally through the central portion thereof;

Hg. 10 is a plan view of the weatherproong Fig-111s a longitudinal sectional view of a portion of the machine beyond the weatherproong applying section takengenerally through the center of the machine;

Fig. 12 is' a plan view of the portion of the apparatus shown in Fis. 11.

Fig. 13 is a central longitudinal section through 46 a continuation of the'machine illustrating the dust-sucking apparatus: v

Fig. 14 is a vertical sectional view taken generally on the line II-I of Fig. 13;

Fig. l5 is a central sectional view of the ap- 50 paratus extending beyond that portion thereof shown in Fig. 13;

Finis is a .vertical sectional view taken on the line lG-li oi Fig. 15. t

The invention will be described tlrst with particular reference to the novel building material which is produced thereby and in order to explain the same, reference may be had to Figs.`l

to 3, inclusive. A sheet III of rigid composition board of desired size and shape and provided with oi1-set edge portions il and I2 and undercut edge portions Il and I4. is adapted to be fed through the machine. When processed by the machine. one face oi' the sheet or panel III is coated with a layer of asphalt A in which grit G of crushed brick or other suitable substance is partially imbedded to provide a` waterproof surface. Grooves i are pressed in said coated face, with the grits G atthe grooved portions completely imbedded and hidden. The panel is thus provided with a waterproof face having a design coniiguration simulating brickwork, or the like.

The machine generally may have a loading platform 25, a primary conveyor unit 2B, an asphalt or weatherprooiing unit 2l. a grit supply and applying unit 28, an intermediate conveyor unit 25. an excess grit removing unit 30, a timed unit feed mechanism I2 and an imprinting unit Il, and an unloading platform 24.

The entire apparatus may be mounted upon parallel angle-iron frame members l5 which are supported throughout their entire length by a plurality ci' angle leg members 35. Adjacent the loading platform a plurality of sprocket wheels Il are arranged to be mounted upon a crossshaft I5 Journalled in suitable ,bearings 39 mounted upon the parallel frame members 35. In the embodiment of our invention shown in the drawings, we provide four oi the sprocket wheels 31 equally spaced between the frame members 35. As previously mentioned, the material upon which it is desired to operate is inches wide and accordingly the apparatus is oi a sufiicient width so that material of this size may be moved forwardly between side guide angles 4| by suitable conveyor chains mounted on the sprockets I1.

The side guide angles 4| are supported upon uprights 42 extending from the frame members 35. Additional support members are provided between the sprockets and comprise the T- shaped members 43 which are supported upon cross-members 44. The cross-members 44 are fastened to the uprights 42.4 'I'he conveyor chains 40, together 4with the'side guide angles 4I and the T-shaped members 4J extend forward to the weatherprooilng applying unit 21, the conveyor chains 45 being geared to a group of sprocket wheels 45 similar to sprockets 31. These i sprocket wheels are also mounted upon a crossshaft 45 journalled in suitable bearings 41 rigid- Lv mounted upon the side frame members 35. The conveyor chains 43 are supported intermediate the sprocket wheels 3l and 45 by plate members 48 supported by the upright frame members 42. 'I'he shaft 45 extends beyond its bearing on one side and has an enlarged sprocket wheel 49 keyed thereto which is driven by means of a chain- 55 from a sprocket wheel 5l mounted upon cross-shaft 52 of the pulling rollers adjacent the weatherproong unit 21. Sprocket wheels 52a, 52h and chains 52e and 52d, drive sprocket wheels Iiilf and 15a on the grit box roller IBI and on the conveyor sprocket shaft 19, later to be described.

Referring now more specifically to Figs. 'l to 10 inclusive, a pair oi' pulling rollers 53 and 54 are provided. mounted in a pair of brackets 55 which are rigidly secured to the side frame members 35. The rollers 53 and 54 are so positioned and adjustably mounted that the same may be moved to a proper position and separated to -the desired width of the material which is to pass therebetween.

Means ior actuating the upper roller 5l may comprise a lever 55 secured to a cross-shaft 51 that is journalled in a suitable bearing 55 of the brackets 55. This shaft may carry an eccentric 55 that has an adjustable member 50 secured thereto and bearing against a compression spring 5|. The compression spring 6i is mounted upon the bearing support for roller 54 and thus by spring pressure the roller is yieidingly held downwardly against the material passing through the machine.

The rollers 53 and 54 are adapted to be driven in a direction to pull the material through the machine by a pair of intermeshing gears 62 and 52 mounted upon the roller shafts 52 and 54 respectlvely.

The rollers 5I and 54 serve to pull the material forward under a spout III extending from an asphalt storage tank 1|. The flow oi' melted asphalt from this storage tank is controlled by a valve 'I2 attached to one wall thereof, and the valve is operated through a link connection i3 with a. hand lever 14 positioned on the left side of the machine. Directly below the spout 'ill and above the material passing through the machine, we provide a horizontally positioned U-shaped member or grate l5 which has a back wall 1li' extending parallel to rollers 53 and 54 to prevent the iiow of asphalt on the panels being coated toward the pulling rollers 53 and 54. This grate is supported at its forward end upon a pair of post members l5 secured to the frame members 35 and at its rear end by .a pair o1 angle plates 'il securedto the brackets 55. The material is supported belowthe spout and to a point adjacent a conveyor chain 'l5 by Tshaped members l! similar to the members 43 previously described. The members 19 are supported upon one end by an angle member secured to the brackets 55 and at their opposite end by a similar angle member 8l securedV to a pair of uprights 82 that are fastened to the side frame members 35. An asphalt overflow tank 83 is positioned below the spout lll and the grate l5 and is sumcicntly wide so that asphalt flowing over the edges of the material will drop into the same. This tank is securely fastened to the underside of the side frame members 35.

'I'he ovcrilow tank 83 has an outlet conduit 84 connected thereto from which a return pipe B5 extends to the upper end of the asphalt tank 'ii so that all of the asphalt which overilows can be returned to the storage tank.

An asphalt spreading device 85 is positioned slightly forward from the spout lll and comprises a horizontal pipe member mounted upon suitable upright pipe connections Il that are connected to a similar cross-pipe 88 at a point below the material path. The cross-pipe 88 is pivotally mounted in a pair of brackets 59 positioned at the sides of the machine so that by moving the lever 90 connected with one side thereof the height of the asphalt spreader 85 can be adi usted as desired.l A similar spreading roller 90' is arranged to be positioned slightly in advance of the roller 85 andmay also extend across the machine.

'I'he spreader 90' is eccentrically mounted in suitable bearings 9| and 92 having at one end a drum 93 upon which indicia is marked'so that the height of the spreader from the material may be determined. The means for moving the spreader member comprise a hand lever llthat is keyed to the shaft upon whichthe spreader is mounted. The roller l may be positioned directly below the spreader lil' so that the material passing below the spreader will be uniformly supported. It will be noted (see Fig. 9) that the 1'shaped supports Il are cut oi! adjacent the roller Il and supported upon cross-angle members II and Il.

After the material passes beneath the spreading roller il'. it passes below a grit box IBB within which a quantity of grit is adapted to be fed to the top of the material by the usual toothed Vroller lli which is rotated to deliver the grit from the bottom of the grit box. A sliding gate |02, which is operated by a hand wheel lill through suitable gears |04 and racks IllB, controis the thickness of the layer of grit which is allowed to drop upon the hot asphalt upon the material.

A hand lever lilla, positioned upon the left side of the machine, is pivotally mounted upon a bracket illb and connected through a rod |0ic with a clutch operating member iUid to engage or disengage the drive for the roller iti.

The grit box is supported by a plurality of uprights lli extending upwardly from the side frame members 3E. Means for providing a more uniform coating of grit and one in which the dust and smaller grit are more or less eliminated from the coating, are provided in the form of a blower unit il'l secured to the machine adjacent the grit box llll.

The blower ill'l has a flattened, narrowmouthed funnel lill which extends across the width of the machine and which is connected to an air conduit III! which extends upwardly to a source of air pressure. A valve lit is provided in the conduit lill for controlling the amount of air that' is used. A pair of straps and |i2, which are attached to the grit box |00, rigidly support the blower in position.

'I'he material which is passed through the weatherproong unit hereinbefore described, again passes upon conveyor chains 18, which are mounted upon suitable sprockets lill. The sprockets are keyed to a shaft III that is journalled in suitable bearings iii upon the frame members 35, similar to the previously described sprocket assemblies. The side guides from this point forward in the machine are in the form of square tubular members iii which are mounted at their forward end upon the angle members 8| and are secured thereto by strap members i|1. These tubular members are adapted to be heated by steam or other suitable heating material for a purpose which will be presently described.

In connection with the weatherproof applying unit it is desired to heat the several devices which operate upon the material. Accordingly, a supply oi' gas or other combustible material is provided. being received through a gas supply pipe iiil which etends upwardly and through a suitable burner mechanism Ii which is adapted to enter the spreading roller 20. A lead |20 may extend therefrom and pass through a burner and carbureting mechanism |2I into a pipe |22 posi-` tioned in the lower end of the asphalt overflow tank Il. The pipe |22 may extend transversely of the tank 83 and have a cross-member |23 and a return pipe |24 so that substantially all of the floor area of the overow tank is kept at a high degree of heat to keep any asphalt which may flow over the edges of the mater-iai into the tank in liquid form. A supply of steam is utilized to heat the primary spreading unit and may be fed into the lower-pipe Il through a steam conduit |25 which is connected to a supply pipe |28. The pipe |26 may have an extension |21 which connects with the lower'roller It of the second spreader unit. The steam supply pipe |20 may also have an extension |22 which ls connected to one tubular side member lil and also has a suitable cross-connection |22 to the tubular side member Iii upon the opposite side of the machine.

Ai'ter the material has been weatherproofed upon one face by the mechanism which has been described, it passes forward upon the chain conveyors 18. During its progress 'upon the chain conveyors 1B, the material passes beneath a plurality oi' transverse pressure rollers |40. These pressure rollers which are driven to pull the material forward in a manner which will be further described, are spaced at intervals upon the frame members Il and are supported in bracket members |4|. The roller pillow blocks |42 are mounted in upright slides i in the bracket members` and have a screw member i secured thereto which extends upwardly through a. cover plate IIB. A compression spring i is mounted between the cover plate i and a screw-threaded washer member lll is mounted upon the mem ber I, The washer can be moved upwardly and downwardly upon the member i, thus increasing or decreasing the compression upon the spring |46 which in turn increases or decreases the pressure of the rollers I upon the material. T-shaped members Ilil similar to those previously described support the material between the conveyor chains, and plate members ISI support the upper side of the conveyor chains during the forward movement of the material.

In order to avoid an uneven forward progress of the material, due to asphalt clinging to the edges thereof and sticking to the side guide members, the side guide members throughout the machine from the asphalt applicator forward may be heated similarly to the members IIB. Accordingly the side guide members |52 may be tubular in shape and be connected by suitable piping |53 at the rollers |43 with the tubular members ilt so that at all times a heated side guide wall is provided except for the short interval at the roller bearing brackets ill;

The T members |5| and the supporting plates |50 may be supported upon the frames Ill by angle members 42 and suitable cross-members M.

The rollers I may be driven in a direction to move the material forward by a suitable drive. A chain |54 is trained about a pair of sprocket wheels |55 and I and in this manner the first roller |00 is driven. A chain |51 extending from the second roller to the third furnishes a drive for the second roller |40. A third chain |58 extends from the third roller forward to the excess grit removing unit where the drive therefor will be further explained.

This drive is furnished by a sprocket wheel |59, (see Fig. 14) which is fastened to the end of an upper roller shaft |80. A pair of gears iii and |62 are mounted upon shaft lill and a crossshaft |53 respectively. A sprocket wheel ISI secured to shaft |62 is arranged to be driven from an enlarged sprocket wheel i" keyed to shaft |82 by means of a chain i".

The roller shaft itil has a pressure miler itl mounted thereon which extends transversely across the machine and which |s mounted in a pair of bracket assemblies |88 similar to bracket assemblies IM, previously described. A second pressure roller |88 is mounted slightly spaced therefrom in a similar bracket assembly |18. Disposed between the two rollers is a sucker unit which comprises generally a conduit |12 having a flattened transverse nozzle |18, a valve |14 and a source of suction |18. The source of suction may comprise a blower unit mounted upon a dust bin |18 into the lower end of which the conduit |12 extends. 'Ihis apparatus may generally draw from the face of the material all of the excess grit which are not adhered to the asphalt, together with all the dust and other sediment thereon. The same is arranged to be drawn upwardly into the bin |18 where the suction unit |15 draws ofi' the dust and lighter sediment, leaving as a deposit in the lower end of the box all of the larger grit so that the same may be utilized at another time.

An extension |11 extends from the previously described steam pipes and connects through suitable fittings with the two side guide members |18. A second sprocket wheel |18 is secured to shaft |68 and through a chain |88 is arranged l to drive a sprocket wheel |8| mounted upon a cross-shaft |82. The cross-shaft |82 has a plurality of sprocket wheels |82 mounted thereon which have the conveyor chains 18 geared thereto.

'Ihe machine as thus far described is capable of taking composition board sheets into the same at one end, coating the sheet upon one face with a layer of asphalt of any desired thickness, placing a quantity of grit upon the asphalt while in a hot state, thus allowing the same to be embedded therein and adhered thereto and then carrying the sheet in this manner forward, pressing the grit into the asphalt at diii'erent intervals during the travel of the sheet, and naliy removing excess grit, sand, dust and other sediment from the surface thereof so that as the material leaves the excess grit remover the same is complete, capable oi' being removed from the conveyor and used. However, it is frequently desired to impress different designs upon the material and accordingly the material continues from this point between a pair of rollers 288 and 28|, (see Fig. i5) i The rollers 288 and 28| are pressure rollers which are adapted to be held into resilient engagement with the material passing through the apparatus by an assembly including a compression spring 8|, eccentric bearing member 88 and lever 86 similar to that previously described.

'Ihe rollers are mounted in suitable brackets I |8 upon opposite sides of the machine.

The T-members |88 may extend to and be supported upon a cross-angle 2|| and the chain supporting plates IBI may be supported upon a similar cross-angle l2 mounted upon uprights M. 'Ihe side guide members `|18 may be suitably secured to the cross-members I2 and extend to the brackets 2|8 at which point a feed pipe 2|2 may extend upwardly therefrom to me further side guide'members 255.

The lower roller 28| may be provided with a doctor plate 2|! which is fastened to a crossangle 2|! mounted between the brackets 2|||. The purpose of this doctor plate is to scrape of! any asphalt which may have adhered to the lower side of the material and have become stuck upon th roller 28|. As a further means for keeping theroller -28| smooth and polished at all times, a exible buil'er member lil may be positioned bearing against the opposite side of the roller. The builer 2|! may be mounted on a cross-bar 2|8 that is resiliently positioned and held by a. pair of bolts 2|1 secured to the brackets 2|8.

From the pressure rollers 288 and 28|, the material moves to a point at which it is manually transferred to imprinting unit 3| (Fig. 4) by means oi' which the grooves i8 are impressed upon the coated face of panel |8. This unit operates in timed relation with the device heretofore described by means of a chain 328 connected with the previously described device by running over gear 32|. The entire device is preferably driven from a suitable motor which may have a drive shaft 218 upon which pinion 21| is mounted. Pinion 21| may mesh with gear wheel 212 which in turn operates through suitable gearing including gear 215 meshing withV gear 285 associated with the imprinting meansl and having a driving connection with the gear of unit 2| over which chain 828 is trained.

What we claim is:

l. Apparatus for constructing a weatherproof building covering unit, comprising a longitudinal base, a plurality oi conveyors mounted on said base. heated guides along the sides of said base, an asphalt supply and discharge positioned above said base for allowing a flow of hot asphalt to a composition board upon said conveyors, rollers nal base, a plurality of conveyors mounted on said base, heated guides along the sides of said base, an asphalt supply and discharge positioned above said base for allowing a flow of hot asphalt to a composition board upon said conveyors, means for controlling the same, rollers above and below theV board for smoothing out and regulating the thickness of said asphalt, a grit supply, means for feeding grit to the upper side of said board situated adjacent said asphalt supply and conveyor means for moving said board away from the asphalt and grit applying positions.

3. Apparatus for constructing a weatherproof building covering unit, comprising a longitudinal base, a plurality of conveyors mounted on saidl base, heated guides along the sides of said base, an asphalt supply and discharge positioned above said base for snowing a flow of hot asphalt to a composition board upon said conveyors, means for controlling the same, rollers above and below the board for smoothing out and regulating the thickness o! said asphalt. a grit supply, means for feeding grit to the upper side of said board situated adjacent said asphalt supply, means for controlling the same, and conveyor means for moving said board away from the asphalt and grit applying positions.

4. Apparatus for constructing a weatherproof building covering unit, comprising a longitudinal base. a plurality of conveyors mounted on said base, heated guides along the sides of said base, an asphalt supply and discharge positioned above said base for allowing a flow of hot asphalt to a composition board uponsaid conveyoro, means ior controlling the same. rollers above and below the board for smoothing out and regulating the thickness of said asphalt, an asphalt overflow tank positioned below the asphalt discharge, a grit supply. means for feeding grit to the upper side of said board situated adjacent said asphalt supply, means for controlling the same, and conveyor means for moving said board away from the asphalt and grit applying positions.

5. Apparatus for constructing a weatherproof building covering unit. comprising a longitudinal base. a plurality of conveyors mounted on said base, steam heated guides along the sides of said base, an asphalt supply and discharge positioned above said base for allowing a ow of hot asphalt to a composition board upon said conveyors. heated rollers above and below the board for smoothing out and regulating the thickness of said asphalt, a grit supply, means for feeding grit to the upper side o! said board situated adjacent said asphalt supply conveyor means ior moving said board away from the asphalt and grit applying positions, and suction means for removing excess loose grit from said unit.

6. Apparatus for constructing a weatherproof building covering unit, comprising a longitudinal base. a plurality of conveyors mounted on said base. heated guides along the sides of said base, an asphalt supply and discharge positioned above said base for allowing a flow of hot asphalt to a composition board upon said conveyors, an overflow tank therebeneath. means for controlling the asphalt ilow, heated rollers above and below the board for smoothing out and regulating the thickness of said asphalt, a grit supply, means for feeding grit to the upper side of said board situated adjacent said asphalt supply, conveyor means for moving said board away from the asphalt and grit applying positions, pressure rollers associated with said conveyor means, an excess grit removing mechanism and means connected therewith for separating useful grit from sand, dust and other sediment removed therefrom.

1. Coating apparatus comprising an interrupted support along which a rigid blank is propelled, means above said support for flowing hot plastic on one face of said blank, spaced transverse members' at said support interruption between which said coated blank is fed while on said support to level the plastic on said board, and means for heating at least the member engaging the uncoated face of said blank.

B. An apparatus for coating one face of a blank comprising a frame mounting means for conveying a blank, means for applying thermoplastic material to the upper face of said blank, a support pivoted to said frame in vertically spaced relation to the path of movement of said blank and means carried by said support forfheating and spreading said thermoplastic material on said blank in uniform predetermined thickness, said last named means being vertically adjustable relative to said blank by pivoting o! said support.

9. An apparatus for coating one face of a blank comprising a frame mounting means for conveying a coated blank, means for applying thermoplastic material to the upper face of said blank, and heated means for spreading said material uniformly in predetermined thickness on said l0 blank including a support shiftable about a trans- D l S C L. A l M E P. 2,163,757.-Robert S. Maclean and Charles W. Pollard, Michigan City, Ind. APPA- na'rus Fon 27, 1939. Disclaimer Corporation.

Hereby enters this disclaimer to claims l,

Wna'mnnraoorme COMPOSITION BOARD.

filed May 13, 1942, by the assignee, Mastic verle axis vertically spaced from the path o! movement of said blank.

10. Coating apparatus comprising a conveyor for a rigid blank. means above said conveyor for iicwing hot plastic on said blank, heated means in predetermined relation to said conveyor for reheating and uniformly distributing said plastic on said blank. means adjacent said heated means for covering said reheated plastic with granular material, and heated means for guiding the movement of said coated blank on said conveyor.

11. Coating apparatus comprising a conveyor for a rigid blank, means for coating one face of said blank with thermoplastic material. and steam conduits parallel to said conveyor and engaged by the edges of said blank to guide the movement of said coated blank on said conveyor.

l2. Apparatus for weatherprooilng sheet building material comprising means for applying hot thermoplastic coating to one face of the material, means for smoothing out said coating, means for applying a layer of grit to said coating. suction means for removing loose excess grit thereon, a conveyor, and a heated guide lor said material extending longitudinally of said conveyor and intermediate said coating and suction means for edge contact with the coated material.

13. Apparatus for weatherprooilng rigid blanks comprising a conveyor. means for owing thermoplastic coating on one face of said blank, and elongated heated members engaging opposite edges of said coated blank to guide said blank on saidlconveyor.

14. An apparatus for coating the upper face of a blank, comprising means for carrying a blank in horizontal position, including rotating feed rolls, means spaced from said rolls for flowing hot thermoplastic coating on the upper face of said blank, means for spreading said coating over said blank, and means above the blank and between said coating means and rolls for retaining excess coating piled up on said blanks by said spreading means spaced from said rolls.

l5. An apparatus for coating one face of a rigid blank, comprising interrupted horizontal guide means for carrying a blank in horizontal position, means for ilowing hot thermoplastic coating on the upper face of said blank, heated means for spreading said coating on said blank. and a pair of members at said interruption spaced in predetermined relation above and below said blank to control the thickness of the coating, the member engaging the uncoated face of the blank being heated.

16. The apparatus of claim 15, wherein said spreading means is carried by supporting means pivoted in vertically spaced relation below the blank.

17. The apparatus of claim l5, wherein said spreading means comprises vertically spaced rigidly interconnected steam pipes, one of said pipes below said blank being journaled in said blank carrying means.

18. The apparatus of claim 15, wherein the member engaging the coated face of the blank is eccentrically journaled in a support at its ends, and means for locking said member in predetermined position against rotation.

ROBERT S. MACLEAN. CHARLES W. POLLARD.

Patent dated June Asphalt 5, 9, 10, 12, and 13 of said Letters ior controlling the same. rollers above and below the board for smoothing out and regulating the thickness of said asphalt, an asphalt overflow tank positioned below the asphalt discharge, a grit supply. means for feeding grit to the upper side of said board situated adjacent said asphalt supply, means for controlling the same, and conveyor means for moving said board away from the asphalt and grit applying positions.

5. Apparatus for constructing a weatherproof building covering unit. comprising a longitudinal base. a plurality of conveyors mounted on said base, steam heated guides along the sides of said base, an asphalt supply and discharge positioned above said base for allowing a ow of hot asphalt to a composition board upon said conveyors. heated rollers above and below the board for smoothing out and regulating the thickness of said asphalt, a grit supply, means for feeding grit to the upper side o! said board situated adjacent said asphalt supply conveyor means ior moving said board away from the asphalt and grit applying positions, and suction means for removing excess loose grit from said unit.

6. Apparatus for constructing a weatherproof building covering unit, comprising a longitudinal base. a plurality of conveyors mounted on said base. heated guides along the sides of said base, an asphalt supply and discharge positioned above said base for allowing a flow of hot asphalt to a composition board upon said conveyors, an overflow tank therebeneath. means for controlling the asphalt ilow, heated rollers above and below the board for smoothing out and regulating the thickness of said asphalt, a grit supply, means for feeding grit to the upper side of said board situated adjacent said asphalt supply, conveyor means for moving said board away from the asphalt and grit applying positions, pressure rollers associated with said conveyor means, an excess grit removing mechanism and means connected therewith for separating useful grit from sand, dust and other sediment removed therefrom.

1. Coating apparatus comprising an interrupted support along which a rigid blank is propelled, means above said support for flowing hot plastic on one face of said blank, spaced transverse members' at said support interruption between which said coated blank is fed while on said support to level the plastic on said board, and means for heating at least the member engaging the uncoated face of said blank.

B. An apparatus for coating one face of a blank comprising a frame mounting means for conveying a blank, means for applying thermoplastic material to the upper face of said blank, a support pivoted to said frame in vertically spaced relation to the path of movement of said blank and means carried by said support forfheating and spreading said thermoplastic material on said blank in uniform predetermined thickness, said last named means being vertically adjustable relative to said blank by pivoting o! said support.

9. An apparatus for coating one face of a blank comprising a frame mounting means for conveying a coated blank, means for applying thermoplastic material to the upper face of said blank, and heated means for spreading said material uniformly in predetermined thickness on said l0 blank including a support shiftable about a trans- D l S C L. A l M E P. 2,163,757.-Robert S. Maclean and Charles W. Pollard, Michigan City, Ind. APPA- na'rus Fon 27, 1939. Disclaimer Corporation.

Hereby enters this disclaimer to claims l,

Wna'mnnraoorme COMPOSITION BOARD.

filed May 13, 1942, by the assignee, Mastic verle axis vertically spaced from the path o! movement of said blank.

10. Coating apparatus comprising a conveyor for a rigid blank. means above said conveyor for iicwing hot plastic on said blank, heated means in predetermined relation to said conveyor for reheating and uniformly distributing said plastic on said blank. means adjacent said heated means for covering said reheated plastic with granular material, and heated means for guiding the movement of said coated blank on said conveyor.

11. Coating apparatus comprising a conveyor for a rigid blank, means for coating one face of said blank with thermoplastic material. and steam conduits parallel to said conveyor and engaged by the edges of said blank to guide the movement of said coated blank on said conveyor.

l2. Apparatus for weatherprooilng sheet building material comprising means for applying hot thermoplastic coating to one face of the material, means for smoothing out said coating, means for applying a layer of grit to said coating. suction means for removing loose excess grit thereon, a conveyor, and a heated guide lor said material extending longitudinally of said conveyor and intermediate said coating and suction means for edge contact with the coated material.

13. Apparatus for weatherprooilng rigid blanks comprising a conveyor. means for owing thermoplastic coating on one face of said blank, and elongated heated members engaging opposite edges of said coated blank to guide said blank on saidlconveyor.

14. An apparatus for coating the upper face of a blank, comprising means for carrying a blank in horizontal position, including rotating feed rolls, means spaced from said rolls for flowing hot thermoplastic coating on the upper face of said blank, means for spreading said coating over said blank, and means above the blank and between said coating means and rolls for retaining excess coating piled up on said blanks by said spreading means spaced from said rolls.

l5. An apparatus for coating one face of a rigid blank, comprising interrupted horizontal guide means for carrying a blank in horizontal position, means for ilowing hot thermoplastic coating on the upper face of said blank, heated means for spreading said coating on said blank. and a pair of members at said interruption spaced in predetermined relation above and below said blank to control the thickness of the coating, the member engaging the uncoated face of the blank being heated.

16. The apparatus of claim 15, wherein said spreading means is carried by supporting means pivoted in vertically spaced relation below the blank.

17. The apparatus of claim l5, wherein said spreading means comprises vertically spaced rigidly interconnected steam pipes, one of said pipes below said blank being journaled in said blank carrying means.

18. The apparatus of claim 15, wherein the member engaging the coated face of the blank is eccentrically journaled in a support at its ends, and means for locking said member in predetermined position against rotation.

ROBERT S. MACLEAN. CHARLES W. POLLARD.

Patent dated June Asphalt 5, 9, 10, 12, and 13 of said Letters

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