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March 16, 1937. 2, 074,130 a. s. PENLEY “ PROCESS AND APPARATUS FOR SURFACING'ROOFING Filed Oct. 26, 1953 2 Sheets-Sheet l INVENTOR 13. 5: Fem/er BYZ/‘A ' . ATTO R N EY March 16,1937. ‘ B. s. PENLEY ‘ 2,074,130 PROCESS AND APPARATUS FOR SURFACING ROOFING Filed Oct. 26, 1933 2 Sheets-Sheet 2 93 I INVENTOR B. 5. Pen /e)/~ ATTORN EY Patented Mar. 16, 1937 2,074,130 ' um'reo" STATES PATENT OFFICE 2,014,130 PROCESS AND APPARATUS FOR SURFACING ROOFING. I Benjamin S. Penley, Yeadon, Pa, assignor to The Barrett Company, New York, N. Y., a corpora tion of New Jersey Application October 26, 1933, Serial No. 695,311 16 Claims. (01. 91-43) This invention relates to the surfacing of roof 'hends such procedure as well as the apparatus for ing, and more particularly, to the formation of practicing the same. ' Other objects and advantages will appear from colored composition roo?ng, such as felt base roo?ng saturated with bituminous waterproo?ng the following detailed description, taken in con 5 material,‘ coated with bituminous waterproo?ng nection with the accompanying drawings, in 5 material, and having colored granular material Fig; 1 is a side elevation of surfacing apparatus partially embedded in the coating on the exposed which- ‘ _ , ' face of the roo?ng. The term “roo?ng material” embodying this invention; Fig. 2 is a fragmentary side elevation, partly is used in a broad sense and is intended to in- a 10 clude material employed for roo?ng, siding, and in section, on an enlarged scale as compared with 10 other analogous protective or decorative pur poses. ' ' The application of‘granular material of one color or blend of. colors to coated roo?ng mate 15 rial during the continuous passage of the roof Fig. 1, and shows the mechanism for operating a gate or valve controlling the discharge of granu lar material from a hopper; ‘ Fig. 3 is a side elevation, somewhat diagram matic in character, showing equipment for mak- l5 ing material through a roo?ng machine is well known. It has been proposed to feed a roo?ng ing composition roo?ng; sheet or web beneath a series of hoppers con ing surfaced ‘in accordance with this invention ; taining di?erently colored granules and operated concurrently dropped granular material on the Fig. 5 is a side elevation, partly in section and parts of the hoppers broken away, and illustrates 20 a modi?ed form of surfacing apparatus embody‘ moving sheet while the sheet progressed a pre- ing this invention; 20 intermittently in such way that all the hoppers determined distance, thus forming transverse stripes on the sheet. Then the ?ow of grit from 25 all the hoppers‘was interrupted while the sheet was moved a distance equal to the length of the roo?ng material on which grit had been showered from the hoppers. An additional hopper was provided to pour granular material over the whole 30 sheet continuously, sov that any unsurfaced por tions of the sheet were covered with granular material. I Such procedure has the disadvantages‘that ex cessive amounts of grit require handling, and color 35 bands of desired color cannot be formed on the roo?ng since the grit applied from the hopper continuously feeding granular material onto the sheet commingles with the grit delivered from the other hoppers, thus a?ecting the color ap ' 40 pearance of the grit on the roo?ng. Further more, the intermittent feeding of granular mate rial simultaneously from a plurality of hoppers during the movement of the roo?ng is di?icult to synchronize with the movement of the roo?ng; 45 hence, contiguous portions of certain of the dif ferently colored bands may blend into each other throughout to an undesirable extent, or may fail to meet on the felt, with consequent detriment to the appearance of the finished elements. 50 It is an object of this invention to provide a sur facing procedure for readily and e?iciently apply ing transverse stripes of differently colored gran _ Fig. 4 shows a fragmentary plan view of roof , Fig. 6 is a. fragmentary vertical section through one of the hoppers of Fig. 5; and 1 . Fig. 'I is a detailed showing of a front eleva- 25 tion of one of the cams and an associated switch of the electrically operated control for operating the gates or valves which .control the discharge of granular material from the hoppers. Referring to the drawings, with particular ref- 30 - erence to Fig. 3, a sheet of ?brous material I ll, which may be, and preferably is, of the usual ‘roo?ng felt'made of rag ?ber, paper stock, or other ?brous material. with or without suitable ?llers, as well known in this art, is fed by‘ feed 35 rolls ll from the usual paper making machine or feed roll into a looping device I2. From the loop ing device i2, rolls i3 feed the sheet into any suit able type of saturating apparatus, indicated gen erally by the reference numeral l4. saturating 40 tank l5 may contain suitable cementitious wa terproo?ng composition, such as asphalt or other bituminous material, utilized for the impregna tion and saturation of roo?ng felts. Rolls i6 and I1 feedthe saturated sheet to a 45 second looping device l8. The passage of the saturated ?brous sheet or base through the loop ing'device i8 gives the saturant an opportunity to impregnate the base thoroughly and to cool. Rolls l9 and 2| feed the saturatedsheet from 50 the looping device l8 to the coating apparatus 22, involving a pair of coating rolls 23, 24,‘ a guide roll 25 being interposed between rolls 2i and the coating apparatus 22. Coating roll 24 is rotatably mounted in a tank 26 which may 55 ular material to a roo?ng web. In the preferred embodiment of this invention, successive stream, each of differently colored granular material, are ‘ contain bituminous material, such as asphalt or fedto a support, forming a continuousstream other cementitious, waterproo?ng substance suit able for coating roo?ng felt. Bituminous ma thereon, contiguous areas of whichare of con trasting color. This continuous stream is fed to terial may be applied to the top of the sheet by means of a pipe 21 having a spout of a width ap- 5o ‘60 the coated roo?ng base. This invention compre 2 2,074,180 proximately equal to that of the sheet. As the valve plate of another hopper, say hopper 34, is 4 sheet passes between the coating rolls 23, 24, the simultaneously opened, so that grit is delivered underside is completely coated by roll 24. The from hopper 34 onto the conveyor belt 38. The coating material delivered by pipe 21 is spread closing of the valve plate controlling the dis 5 uniformly over the top side by the coating roll _ charge of grit from hopper 35 and the opening 23, excess coating material passing over the edges of the valve plate controlling the discharge from of the sheet and draining into the tank 26. hopper 34 is effected substantially simultaneous Immediately after leaving the coating appli 1y so that the grit delivered from hopper 34 forms ance 22 and while the coating material is still a continuous stream on conveyor belt 38. Thus, 10 hot, soft and tacky, the coated sheet passes in e?ect, differently colored grit is delivered from 10 through the surfacing apparatus‘indicated gen each of the hoppers 3| to 35, the contiguous erally by the reference numeral 30. The sur streams merging on conveyor belt 38 so that a facing apparatus involves ?ve hoppers, 3|, 32, continuous stream, contiguous areas of which are 33, 34, and 35,v each having discharge outlet or of different colors, is fed by the conveyor belt 15 spout 36 in which is rot'atably mounted a dis 38 to the coated sheet passing therebeneath. tributing roll 31. The drive for roll 31 is pref This continuous stream forms on the coated sheet erably geared to that for the rolls or drums 58 transverse stripes | to 5 (Fig. 4) , each of different and 59, hereinafter described, which pull the color and extending transversely of the length sheet through the apparatus; hence, the feed of of the sheet. 20 granular material to the sheet is proportional In the embodiment of the invention shown on 20 to the movement of the coated sheet. While ?ve hoppers are shown in Fig. 1, it will be under stood that any desired number of hoppers, de pending upon the number of transverse bands or 25 stripesit is desired to form on the roo?ng sheet, may be employed. The hoppers 3| to 35 are ‘ arranged in stepped relation, hopper 3|, furthest removed horizontally from the discharge point of the endless conveyor belt 38 disposed beneath 30 the hoppers, being positioned closest to the con veyor belt, and the hopper 35, closest to the dis charge end of the conveyor belt 38, being po sitioned the greatest distance vertically above the conveyor belt 38. By this arrangement of the 35 hoppers, the time interval required for the fall of particles from each hopper to the conveyor belt 38 and the movement of the particles on the ‘ conveyor belt 38 to the deposit point A is sub stantially the same. 40 Each hopper extends across the full width of the roo?ng web and is provided with a valve plate or gate 39 pivoted as at 4| and secured to an arm 42. Since the gates and the operating mech anism therefor for all hoppers are of like con 45 struction, only one will be described in detail. As shown in Fig. 2, arm 42 is pivoted at 43 to a long arm 44 which passes through a guide slot 45 in a support 46. End 41 of the lever 44 is pro; vided with a cam roll 48 arranged to travel in a 60 cam track 49 on the cam 5|, keyed to shaft 52. Shaft 52 has one cam for each hopper 3| to 35, inclusive, and the cams. are so arranged that the gates 39 of the hoppers 3| to 35 are operated in timed sequence, flow of grit from one hopper being 55 interrupted by the closing of the valve plate 39 while ?ow of grit from a second hopper is simul taneously initiated by the opening of valve plate 39 associated with the second hopper. Different ly colored grit is supplied to each hopper. , ' 60 In operation, as the coated sheet passes be neath the surfacing device 30, grit of one color is fed from one hopper by the rotation of the distributing roll 31 therein, say hopper 35, and flows onto the belt 38, which is preferably driven 65 at a uniform linear speed at least equal to that of the web. The belt delivers the grit to the dis charge point A, the grit leaving the conveyor belt 38 and gravitating onto the continuously mov ing coated sheet or web passing therebeneath. 70 A guide plate 53 may be suitably mounted to guide the movement of the grits from the con veyor belt onto the coated sheet. Upon passage of the sheet through one unit, in the instant case, the width of stripe I, 2, 3, or 4 (Fig. 4), the drawings, the cams 5| are all keyed to one shaft and the valve plates 39 are operated in timed sequence so that stripes of uniform width are formed on the coated sheet. If desired, the cams or the electrical control hereinafter de scribed may be designed and arranged so that all valve plates do not remain open for the same time interval but one or more of the plates 39 is open for a longer time than the others so that stripes of different widths, and not of uni form width, are produced. After being surfaced as hereinabove described, the sheet passes about reversing roll 54, which functions to partially embed the mineral gran ules in the plastic coating. Any excess granules fall from the surfaced sheet into a hopper 55 whence they may be sent to any one of hoppers 3| to 35 or may be otherwise used. ‘In the con tinued passage of the surfaced sheet, it travels next under hopper 56. Powdered talc, mica; or 40 other anti-stick composition capable of rendering the back of the sheet non-cementitious is dis posed in hopper 56. This talc or other material may be discharged from the hopper 58 by a dis tributing roll 51 onto the coating on the back of 45 the sheet in the form of a layer covering sub stantially the entire width of the sheet. The thus covered sheet then passes over reversing roll 58, which partially embeds the talc in the sealback coating and imparts a smooth surface to the back of the sheet. Excess talc falls from the sheet as the latter passes from reversing roll 58 to the ?rst of a series of calender rolls, each designated by the reference numeral 59 which function to feed the sheet through the coating -55 and surfacing apparatus. From the calender rolls 59, the sheet is fed by feed rolls 6| through a looping device 62, where the coated and surfaced product is given an op portunity to cool. Feed rolls 63 feed the surfaced 60 sheet to the cutting cylinders 64 which may cut it longitudinally of the web and transversely into strip shingles having differently colored trans verse stripes on the tabs extending along .one longitudinal edge thereof. Figs. 5 to '7 disclose a modi?ed form of appa ratus for applying granular material to the coated sheet. The electrical control of Figs. 5 to '7 is preferred since it functions to operate the gates more quickly than the cam mechanism of Figs. 70 1 and 2. Fig. 5 shows four hoppers, 1|, ‘I2, 13, and 14, the discharge outlets of which are dis_ posed in the same horizontal plane. The hop pers are arranged in pairs C and D, pair C be 75 the valve plate of hopper 35 is closed and the 'ing constituted of hoppers 1| and ‘I2 and pair 75 3 D of hoppers 13 and 14. The pairs of hoppers C and D are disposed ‘ egui-distances on oppo causing the gate 99 to move to the dotted line , position shown on Fig. 6. site sides of the vertical plane represented by a ‘ ‘ One circuit for’energizing and deenergizing line passing through the deposit point 15 where the solenoids will now be described. Electrical the grit or other granular material from the hop conductors 93, 94 (Fig. 5) communicate with a pers is delivered onto the coated sheet. A guide ‘ suitable source of E. M. F. plate 16 is arranged to receive granular material from hoppers 1|, 12 and a second guide plate 11 The solenoids 81 are connected in parallel with the conductors 93, 94 by suitable conductors and each solenoid has con is disposed to receive grit from the other two , nected in series therewith and individual there 10 hoppers, 13, 14. These guide plates may be of ‘ to a switch 95. When the switch individual to 10 steel and may be equipped with suitable vibrators. Hoppers 1|, 12 are disposed equi-distanoes on .opposite sides of the point represented by refer ence numeral 19 where I grit is deposited from 15 these hoppers onto the guide plate 19. Guide plates 19, 8| are associated with hoppers 1|, 12, respectively, to guide the discharge of grit from these hoppers onto the plate 16. Hoppers 13, 14 are disposed horizontally equi-distances from de 20 posit point 82. Guide plates 83, 84 are asso a solenoid is closed, as will be understood, the solenoid is energized, causing the core to move upwardly to close the valve plate 39 operated thereby. The switches 95 are arranged to be opened and closed by cams 99, each individual 15 to a switch and all keyed to a shaft 91 arranged to be rotated at a constant speed by an electric motor (not shown) or other suitable source of power. Each cam 96 has a raised portion 91' and a. depressed portion 98, the raised portion be 20 ing arranged to contact with the lower leaf spring 99 of the switch 95 to cause engagement of the contacts thereby closing the switch 95. pers shown in Fig. 5, the path of movement of When the I00, depressed portion 98 of the cam 96 25 the granules from each of the hoppers to de comes below the leaf spring 99 of the switch, 25 posit point 15 is substantially the same in ex ‘ the switch opens. The raised and depressed por tent.“ Accordingly, a like time interval is re tions of the cams on shaft 91 are arranged in quired for the flow of the grit particles consti tuting each of the streams from their source to desired relation to permit opening and closing 30 the deposit point since the speed of rotation of of the switches 95 in desired sequence. 30 ‘As shown on Fig. 5, the switch'at the extreme the distributing rolls in each of the hoppers is left is open so that the solenoid associated with substantially the same. » As shown on Fig. 6, an adjustable plate 85 is hopper 14 is deenergized and the gate of this disposed in one wall of the hopper and functions hopper maintained in open position whereas the to regulate the extent of the opening 89 through other switches 95 are closed; hence, the solenoids 35 which granular material gravitates to the base in circuit therewith are energized and the gates portion of the hopper. Each hopper has rotat ‘of the remaining hoppers maintained closed. ably mounted therein a ?uted distributor roll 31. Upon rotation of shaft 91,- the switch at the ex As hereinabove indicated, the drive for this roll ' treme left (Fig. 5) is closed and another of. the 40 is preferably geared to that for the calender rolls switches opened, causing deenergization of the 40 59 which pull the sheet through the apparatus. 1 solenoid in circuit with the open switch and the Rotation of rolls 31 in each hopper functions to opening of the gate or valve of the hopper having agitate the granular material therein, and when the solenoid in circuit with the open switch. the gate or valve controlling the discharge of It will be noted that this invention provides a ciated with hoppers 13, 14, respectively, to guide the ?ow of grit from these two hoppers onto the guide plate 11. With the arrangement of hop 45 granular material is open, to discharge a stream of granular material therefrom. .When the gate controlling the discharge of granular material is closed, as shown in dotted lines on Fig. 6, the gate interrupts the discharge of granular mate ‘so rial, the continued rotation of the distributing roll functioning to agitate‘ the material at the base of the hopper maintaining the granules in a loose condition so‘that upon subsequent open ing of the gate to the full line position shown in 55 Fig. 6, discharge of the granules occurs imme diately. It will be noted from Fig. 6 that the distributing rolls are rotated vin such direction that the granular material fed thereby has an initial velocity in the direction of fall the mo 60 ment the valve plates are opened. This insures uniform application of the grit throughout the surface of the roo?ng. , Each hopper is equipped with a solenoid 81, the core 88 of which is pivoted at 89 (Fig. 6) to 65 an arm 9|, in turn pivoted at 92 and secured to the gate or valve 39. The core of the solenoid is constructed and, arranged, as well known in . the electrical art, so ‘that upon the interruption 70 of the flow of current through the solenoid, the core drops, pushing down on lever 9| andv caus ing the gate or valve 39 to swing outwardly to the full line position shown on Fig. 6. Upon energization of the solenoid, the core is moved up wardly to swing the lever or arm 9| upwardly, surfacing procedure ‘for successively applying transverse stripes of differently colored granular 45 material to a roo?ng web. Since the time in terval required ‘for the ?ow of grit particles from each hopper to point A is substantially the same, the interruption of the flow of one stream and 50 the substantially simultaneous initiation of the ?ow of the second stream results in the grit con stituting the leading end of the second stream being disposed‘ contiguous to the grit constituting the tail end of the ?rst stream. Hence, _a con tinuous stream, contiguous areas of which are of. contrasting color is fed by the conveyor belt onto the coated sheet moving therebeneath, the grits forming well de?ned stripes or bands and this without leaving any portion of the asphalt 60 or- other bituminous coating layer unsurfaced. Since certain changes in carrying out the above proces and certain modifications of the appa ratus ‘may be made without departing from the scope of this invention, it is intended that all 65 ,matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. For example, instead of applying granu lar material of different colors, ‘granular mate 70 rial of di?erent degrees of coarseness or‘ other physical characteristics might be supplied to the hoppers and fed therefrom onto the coated sheet. If desired, each hopper might be provided with 75 '4 9,074,180 partitions dividing it into compartments, each of which is supplied with differently colored granu to a portion of said sheet to form a colored trans verse band thereon, interrupting the ?ow of said lar material so that each transverse band I, 2. 3, 4', and 5 (Fig. 4) instead of being constituted of a single color, as shown in Fig. 4, will be con stituted of contiguous portions of different colors and the formation of a plurality of such bands will result in the production of a "checkerboard” pattern. Instead of forming bands of uniform width the cam-operated control mechanism of Fig. 2 or'the electrically operated control of Fig. stream of granular material and substantially simultaneously initiating the ?ow of a second stream of granular material of different color extending transversely of said sheet from another .of said sources and applying it to said sheet to form a differently colored transverse hand there on, and interrupting the flow of said second stream, the ?ow of the stream from each of said 10 plurality of sources being initiated substantially simultaneously with the interruption of a stream from another of said sources whereby a continu ous layer of surfacing material is applied to said 5 could be adjusted so that some gates are open 15 for longer periods than others, thus forming dif ferently colored bands of different widths. I claim: 1. Apparatus for surfacing a sheet of roo?ng material comprising means for moving the sheet longitudinally, a plurality of stationary hoppers for containing granules of different character 20 istics, each hopper having a discharge outlet ex tending transversely across the entire-width of the sheet, means for ?owing streams of granular material from said hoppers through said dis 25 charge outlets, and means for sequentially effect ing cessation of the ?ow of said streams whereby transverse bands of surfacing material are de posited from said hoppers onto said roo?ng sheet, each of said bands extending across the entire 30 width of the sheet and each being constituted substantially entirely of granular material from one of said sources. , - 2. The process of surfacing a sheet of roo?ng material which comprises successively feeding - onto a longitudinally moving support a plurality of differently colored streams of granular mate rial extending transversely of said support fmm a plurality of sources of said material respec tively, and applying said material from said sup 40 port to a roo?ng sheet without substantially mix ing the particles from one source with those from another source, thereby forming differently col ored transverse stripes on said sheet. 3. The process of surfacing roo?ng which com prises coating a felt base with cementitious water sheet, said layer being composed of transverse 15 bands, each constituted substantially entirely of granular material from one of said sources, the time intervals required for the travel of the indi vidual particles from each of said plurality of sources to the sheet being substantially the same. 20 6. The process of manufacturing shingles which comprises continuously feeding a coated web in the direction of its length, successively applying streams of di?'erently colored granular material from a plurality of differently colored 25 sources thereof to said web to form differently colored stripes thereon, said streams extending transversely with respect to the direction of movement of said web, the flow of each of said streams from its source taking place only while 30 the streams from the remainder of said sources are interrupted, each of said streams forming a band corresponding'in color to the color of the source from which it is fed and forming a band extending transversely across said web, and cut. 35 ting said web longitudinally of its length into strip shingles having tabs along one longitudinal edge thereof. ’ » 'I. The process of surfacing roo?ng which com prises feeding a roo?ng sheet longitudinally, suc 40 cessively feeding from a plurality of sources of differently colored granular material a plurality of differently colored streams of such material extending transversely with respect to said sheet 45 proo?ng material, feeding a stream of granular v and applying said transversely extending streams material from a source of such material onto said roo?ng sheet, interrupting said stream of granular material, initiating a second stream of Cl 3 granular material of different characteristics from another source and applying said second stream to said roo?ng sheet in contiguous rela tion to said ?rst named stream, each of said streams extending across the entire width of said sheet to form transverse stripes of different ap pearance thereon, the successive ?ow of said streams preventing substantial mixing of the granular material of said streams. 4. The process of forming vari-colored roo?ng 60 which comprises applying a stream of colored surfacing material from a single source to a roof ing base at a substantially uniform rate, inter rupting the ?ow of said stream and initiating the ?ow of another stream from a second, different ly colored source at a substantially uniform rate to form stripes on said base each of which corre sponds in color to the granular material of one of said sources. 5. In a process of surfacing roo?ng material by applying granular material from a plurality of differently colored sources thereof to a roo?ng sheet, the steps comprising ?owing a stream of ‘said material extending transversely of said 75 sheet from one of said sources and applying it to said sheet, thereby forming differently colored transverse stripes thereon, the color of each of which stripes is the same as the color of one of said sources. ' 8. The process of surfacing roo?ng material 50 which comprises successively feeding differently colored streams of granular material from a plurality of sources thereof respectively, onto a moving support in timed relation to form a con tinuous stream thereon, and applying the said 55 continuous stream to a roo?ng sheet thereby forming colored stripes thereon, the color of each of which corresponds to the color of the granular material of one of said sources. 9. The process of surfacing roo?ng material which comprises continuously feeding a cementi tious sheet beneath a moving support, continu ously and successively feeding differently colored streams of granular material from differently 60 65 colored sources of such material onto said mov ing support to form on said support a continu ous stream having differently colored areas, the color of each area of said stream being the same as the color of the granular material of a corre 70 sponding source, and applying said stream to said sheet. 10. A machine for making roo?ng including in combination, means for coating a moving roo?ng sheet with cementitious material and means for 75 2,074,180 5 applying substantially parallel transverse bands of 14. The process of surfacing a sheet of roo?ng granular material of di?erent appearance to said material which comprises providing a plurality ,roo?ng sheet, said last named means comprising - of sources of surfacing material of different char a plurality of stationary sources of granular ma 5 terial of different characteristics, said sources extending transversely of the direction of move ment of said roo?ng sheet,‘ means for continu ously feeding the coated sheet beneath said sources, means for ?owing a stream of granular l0 material from one of said sources and applying said stream to said sheet to form a transverse band thereon, means for interrupting the ?ow of said stream from said source, means for suc cessively initiating the ?ow of a second stream 15 of granular material from another of said sources for applying said second stream to said sheet in acteristics, ?owing from one of said sources onto said sheet for a predetermined interval of time 5 a stream of surfacing material extending trans versely of the sheet to form a band constituted substantially entirely of surfacing material of characteristics corresponding to the characteris tics of the surfacing material of said one source, 1Q said band extending transversely of said sheet, discontinuing the flow of surfacing material from said one source and flowing from a second source stream, each of said streams forming a transverse onto said sheet for a second predetermined inter val of time a second stream of surfacing material 15 of di?erent characteristics, said second stream also extending transversely of the sheet, to form _ a second transverse band on said sheet, said sec- ‘, band on said sheet constituted substantially en 0nd band being constituted substantially entirely‘ substantially parallel relation to said first named 20 tirely‘ of granular material from one of said sources. of surfacing material from said second sources” 20 15. The process of surfacing a moving sheet of‘ ' 11. In apparatus for surfacing roo?ng, means for continuously feeding a roo?ng sheet, means for coating the sheet with cementitious water 25 proo?ng material, a plurality of stationary hop pers, each containing differently colored gran ular material, and extending above the sheet across the width thereof, means for discharging a stream of granular material from one hopper ‘30 and applying said stream to a portion of the sheet ‘to form a stripe of the color of the gran roo?ng material which comprises providing a plurality of individual, di?erently colored sources of surfacing material extending transversely of the sheet across the entire width thereof, ?owing 25 a stream of surfacing material extending trans versely of said sheet from one of said sources at a substantially uniform rate for a predetermined interval of time onto said sheet to form a trans verse band of predetermined width thereon ex __ular material in said one hopper extending across tending transversely entirely across said sheet, said band being constituted substantially entirely . ‘the sheet, means for interrupting the discharge of granular material from said one source, dis of granular material from said one hopper and 35 means for‘substantially simultaneously initiating the discharge of a second stream of granular material from another hopper and applying said second stream to another portion of the sheet to form another stripe of the color of the granular 40 material in said last named hopper extending across the sheet. ‘ - . 12. In a roo?ng machine in combination, means for continuously moving a sheet of roo?ng mate rial, a plurality of independent stationary sources 45 of granular material of different characteristics located above the path of movement of said roof ing sheet, said sources extending transversely of the direction of movement of said roo?ng sheet, means for initiating ?ow of. a stream of granular 50 material from one of'said sources and flowing said stream onto a portion of said sheet to form a transverse band thereon, means for interrupt ing said stream and successively initiating the continuing the ?ow of granular material from said one source, ?owing a stream of differently 35 colored granular material extending transversely of said sheet from a second source at a substan tially uniform rate for another predetermined interval of time onto said sheet to form a second hand of predetermined width thereonysaid sec- 40 0nd band being constituted substantially entirely of granular material from said second source and extending transversely substantially entirely across said sheet, the bands of surfacing mate rial from said plurality of sources covering the 45 entire roo?ng sheet Without substantial overlap ping of contiguous bands. 16. In apparatus for surfacing roo?ng mate rial in combination, means for continuously feed ing a cementitious sheet of roo?ng, a conveyor 50 disposed above said sheet and arranged to move at substantially the same linear speed as said sheet, a plurality of hoppers having discharge outlets extending transversely with respect to tion of said sheet to form a second transverse said conveyor, said hoppers being disposed above band thereon, said sources and applying means vsaid conveyor in stepped relation, the hopper being constructed and arranged so that the time remote from the discharge and of the conveyor being closest to the conveyor and the hopper interval required for travel of the granular mate ?ow of a stream from- another of said sources 65 and ?owing said second stream to another por _ 60 rial from each of said sources to said sheet is closest to the discharge end of the conveyor being 60 _ substantially the same. disposed vertically the greatest distance above 13. In a machine‘ for surfacing roo?ng mate the conveyor, means for successively operating rial, means for coating the roo?ng sheet, a plu said hoppers to discharge falling streams of ma rality of stationary hoppers each containing dif- ’ terial therefrom onto said conveyor, said falling ‘55 ferently colored granular material, means for streams forming a continuous layer of granular 65 continuously feeding the coated sheet beneath said hoppers, andmeans for discharging gran ular material from each of said hoppers while preventing the ?ow of granular material from 70 the remaining hoppers, and means for interrupt ing the ?ow of granular material from each of‘ material on said conveyor, contiguous areas of whichare of contrasting color, said conveyor operating to discharge said continuous layer as a stream onto ‘said continuously moving sheet forming transverse stripes of differently colored granular material thereon. ‘ said hoppers while initiating the ?ow from an other of said hoppers. BENJAMIN S. PENLEY.