USRE11017E - mcgraw - Google Patents

Description

5 SheetsSheet 1. G. W. MGGRAW, D eod. Assighor to J. A. &. H. L. MGGRAW, G. v-W. MGGRAW, JR., &. G. E. Mc GRAW.

MACHINE FOR THE MANUFACTURE OF ROOFING.

No. 11,017. eissued J111y'30, 1889..

u 5 INVENTOR,

WITNESSES:

5 Sheets-Sheet 2.

G. W. McGRAW, Deo'd.

Assignur to J. A. & H. L. MGGRAW, G. W. MGGRAW, .13., & C. E. MGGRAW. MACHINE FOR THE MANUFACTURE OF ROOFING.

N0. 11,017: Reissued July 30, 1889.

wnmzsszs: INVENTOR, W joahQww 2 Maww v AttyS;

6 SheetsS heet 5. G. W. McGRAW, Deod. Assignorto J. A. 86 H. L. MGGRAW, G. W. MGGRAW, JR.,'& 0. E. MGGRAW.

MACHINE FOR THE MANUFACTURE OF ROOFING.

No. 11,017. Reissued July 30, 1889.

WITNESSES: INVENTOR, 2% a. ukawa UNITED STATES PAT NT OFFICE.

JOHN A.-Mo RAw, HENRY L. MOGRAW, GEORGE w. MCGRAW, JR., AND CHARLES EDWIN MOGRAW, E ALLEGHENY, PENNSYLVANIA, ASSIGNEES or GEORGE w. MCG-RAW, DECEASED.

MACHINE FOR THE MANUFACTURE OF ROOFING.-

SPECIFICATIQN forming part of Beissued Letters Patent No. 11,017, 1889.

Original No. 366,857, dated July 19, 1887. Application for reissue filed June 5,1889 Serial Hp.31 3, Z3

To all whom it mag concern ,Be it known that GEORGE W. MCGRAW, late of Allegheny city, in the county of Allegheny and State of Pennsylvania, and now deceased, did invent/a new and useful Improvement in Machines for'the Manufacture of Roofing, ofwhich the following is a full,

clear, and exact description, reference being had to the accompanying drawings, forming to part of this specification, in'which machine, the section being on the line a: a: of Fig. 3. Fig. 2 is a detail side view of the rollers 7 and 8, shown in Fig. 3. Fig. 3 is a .15 vertical longitudinal section on the line y-y of Fig. 1. Fig; 4 is a side elevation of part of.

the machine included between the line a z and the'line z z of Fig. 3. Fig, 5 is an end view of part of the machine, being an irregular section on the line w w of Fig. 4. Fig.6

is a vertical longitudinal section of the traction and sanding apparatus shown in connection with the delivery end of the machine.-

Fig. 7 is a planv view of the 'table' which rea 5 ceives the finished sheets. Fig. 8 is'a partial side view of Fig. 7. Fig. 9 is avertical crosssection on the line 'v v of Fig.7.

1 Like symbols of reference indicate ,like .parts in each.

the roll from which the primary sheet or web of paper is drawn. It is journaled near to a tank 4, which contains the melted asphaltum with which the paper is coated, and which is kept in a fluid condition by a' fire in -a furnace 5 underneath it. Within this tank are journaled two adjacent rollers 7, which are situate so that thelower parts of their circumfer e'nce shall be continually immersed in 0 the liquid. Above the rollers 7 are three smaller rollers 8,'of which "one is journaled between the rollers 7 and the other two are journaled at the sides thereof. This arrangement of the rollers keeps the paper in very 5 close contact with the coating-rollers 7. All of the rollers 8 are in contact with or nearly in'eontact with the rollers 7. 1 The manner in e which these'rollers are journaled is shown in Fig. 2. The upper rollers 8 are journaled in In the drawings, Figs. 1 and 3, 2 represents 12, in whichthe lower rollers are journaled.- The frame 10 can thus be lifted, as shown in Fig. 2, to separate the smaller rollers from the I larger, the purpose of this arrangement being to facilitatethe adjustment of the roofingpaper. I H 1 9 is a fixed bar at the forward edge of the tank-4, over which thepaper passes as it leaves the tank. In advance of the tank 4 are two compression-rollers 14, which are F-ig'pre 1 -is a sectional plan view-of the journaled quite closely together in suitable hearings on the frame of-the machine.

.15 is the roll from which the second web of paper is drawn. It is journaled just back of the rollers 14. in peculiarbearings, hereinafter to be described. In advance of the rollers 1 4 is another compression device, which is aframe consisting of two bars 16, preferably -hollow pipes, which are connected at one end by a branch pipe 18. This .frame is longi- 7o 'tudi'nally pivoted 0n trunnions 17, which are journaled in suitable hearings on theframe of the machine. The final compressing device consists of two cylinders 19, which are set forward of the frame 16, and are. somewhat separated. A hollow weight or-presser 20 rests upon the surface of the pipes 19 and bridges the space between them, extending nearly from end to end of the pipes. This weight is provided with projecting arms 21, 8o pivoted to bars 22, which are parts of the machine-frame. A rope 23 is attached tothe presser 20, and extends 'over a sheave 24' to a convenient place. This constitutes the means whereby the pressermay be lifted on the pivot of the arm 2]. when desired. We shall now describe the operation of these parts. The paper from the roll 2 is drawn down under the rolls 8 andover the rolls 7, as shown in Fig. 3, the frame 10 being first raised 0 to permit the adjustment of the paper over the rolls 7, and then folded down on it into the position shown by full lines in Figs. 2 and 3. Then as the paper is drawn forward out of the tank its friction causes the rotation of the 95, rolls 7 within the tank, andby pressure of the rollers 8, which keepsthe paper in contact with these rollers 7, the under side of the-paper is coated with a film of asphaltum. Iii

.order that the edgesof'the paper may not be a small marginal strip on each side uncoated.

Then when the coated paper is afterward compressed together with another strip of paper the asphaltum in the middle spreads out to the edges, and so gums both sheets together, but does not exude at the edges. We accomplish this partial coating of the sheet by making the lower rollers 7 shorter than the width of the paper, so that they shall not extend entirely across the same. After the paper which has been coated on its under side leaves the tank 4., it passes between the rollers 14, Where it meets with the web of paper drawn from the roll 15. The compression of these rollers fixes the webs together. From the rollers 14 the united webs pass to the frame 16. It is arranged over the first of the pipes 16 and under the second, as shown in Fig. 3, and thence it passes over the cylinders 19, against which it is held by compression of the weight 20, which rests upon it. From the cylinders 19 the paper isdrawn onto. the receiving-table by mechanism hereinafter to be described.

The effect ofthe rollers 14, the frame 16, and

the cylinders 19 and weight 20 is to compress the paper very closely together. The frame 16 acts by tensioning the paper, the tension. being caused by the difference in level of the pipes. The tension" may be increased by turning theframe on its axis 17 in the direction of the arrow b, thus increasing the difference in level, audit maybe diminished by turning the frame in the other direction, so as to bring the top of the rear pipe and the bottom of the forward pipe more nearly on the sameplane. I be imparted by hand; but we prefer to turn it, as shown in Fig. 4, by a lever 24, aflixed to the axis 17, and provided with a rack or quadrant 25, by which the lever may be locked. The cylinders 19 are preferably hollow, and are connected at the ends by a pipe 34, and steam is circulated through both the cylinders 19 and frame 16, as illustrated in Fig. 1. The

.: purpose of this is\t0 keep the frame and cylinders hot, and so preserve the visc'idity of the layer of asphaltumbetween the paper. The compression of the paper is in this way betis had. The action of the cylinder 19 and presser, 20 is such that creases are taken out of the paper and it is smoothed or ironed into shape. This result is accomplished by reason of the fact that in passing over the cylinders, therevis a frictional or rubbing action or compression exerted on the paper quite un like the action of rollers revolving at the same surface speed as the paper, since while such rollers may exert a compressing action on the sheet, they lack that peculiar rubbing or ironing which is so eflicien't in finishing the sheet. In this regard the actions of the parts 16 and 19 are substantially the same-one. serving to complete the work of the other.

' It is desirabie that therelative posit-ions of These motions of the frame may the rolls of paper 2 and 15 should be such that the sheets shall fit evenly to each other and shall not overlap. To this end we make the roll 15 adjustable endwise, preferably in the manner shown on the third sheet of the drawings. The axis 26 of the roll 15 is jour-. naledin a U-shaped frame or yoke 27, fixed to a cross-bar 28, which passes loosely through uprights 29 of the machine-frame.

30 is a connecting-rodwhich is attached to the upper part of the frame 27 and to a lever 31, which is suitably fulcrumed at a point 32. By depressing this lever the paper roll may be raised from the position shown in- Fig. 4, which it occupies when the roll is set in place, into the elevated position shown in Fig. 3, which is its position during the operation of the machine.

I Atthe end of the bar 28 thereis aset-screw 33, provided with collars 34, between which is a forked end of the bar- The screw passes through a threaded socket in the frame 29.

ers through the liquid in the tank 4, as shown in Fig. 3'. Each side of the paper is thus coated. To one side of it is united thepaper from the roller 15, and for the other side we use a third oll of paper 35,. which is arranged back and above the level of the rollers 14, and is mounted in a movable frame 36, similar to the frame 27, and made so for the pur pose of shifting the roll 35 into alignment with the other two rolls 2 and 15. making three-ply paper the primary web is immersed in the fluid in the tank 4,we are not ablejto prevent exuding of the asphaltum at the edge of the paper during compression. \Ve, however, obviate the disadvantages of this exuding by an arrangement of mechanism shown in Figs. 1, 4, and 6. In advance of the cylinders 19 are two pipes 37, which lead from an elevated sand-hopper 38 and have their.

discharge ends just above the paper and at the edges thereof. I \Vhen the paper is pass ing through the machine, the sand is allowed to flow through the pipes 37. In this way the exuded asphaltum at the margins of the paper is coated with sand, and the paperis thus deprived of its liability to stick to other sheets of finished roofing which maybe superposed on it. r

We shall now describe that part of the machine shown on Sheets4 and 5, which comprises the mechanism which draws the' paper through the machine and the mechanism which coats it with sand or-gravel.

the rollers 8 we carry it underueaththese 1011- Since in IIO ' machine over the table 46.

When it is desired to coat the outside of the roofing-sheet with alayer of sand or gravel, the sheet as it emerges from the cylinders 19 and presser 20 passes around rollers and 41 and over rollers 42, which are arranged. in a tank 43 similarly to the arrangement of the rollers Tin the tank 4. (Shown in Fig. Rollers 44 press on the paper abovc'the rollers 42 in like manner with the rollers 8 in Fig. 3. The tank 43 contains asphaltum or other similar substance to impart an adhesive coating to one side'of the paper as it passes between the rollers 42 and 44. From the tank 43 the paper passes around a roller 45,- at the front end of the receiving-table 46. The top of this table is constituted by a series of cross slats or bars 47, adapted to receive the roofing. The end of the paper .is grasped by grippingtongs 49, to whichis attached a rope 50. The rope extends to the front of the table 46, and, passing around a pulley 51,there situated, extends back to the rear end of the table to a power-driven drum 5 2, to which itis fastened.

Now, if the drum 52 be started it will draw' the rope in the direction of the arrow,;

pulling the roofing-sheet with it from the The roller 45 and, preferably, the rollers 40 and -41 are driven by suitable power-connections, so as to draw the roofing through the machine. As the roofing, passes over the table 46, it is sanded by means ofa hopper 53, which is filled with sand and has a discharge spout or.

nozzle directly over the table. This spout is controlled by a suitable valve 54. When the tongs 49 reach the-forward end of the table, they are disengaged from the sheet, and the latter is suffered to drop upon the table and is cut oif from the main web at a place back of the hopper 53. The tongs. must then be drawn back to get a new grip upon the sheet. This is done by means of a rope 55, connected with apower-driven drum 56, and attached to a traveler 57, mounted on a track 59, and

having a rope 58, which supports the tongs 49. On starting the drum 56 the traveler and tongs are drawn back to their original positions at the rear of the table 46. Before drawing the roofing again over the table 46 it is necessary-first to remove the sheet 'which was before cut off, because the rubbing of the upper sheet over the sanded'surface of the lower would displace and spoil the sand.

On Sheet 5 of the drawings we show a convenient .means for removing the roofing from the surface of the table. The slats 47 are pivoted to the side rails of the table at points 60, and arev divided at the middle. They also project beyond the outer sides of these rails. The outer projecting ends of the slats are connected by bars 61, which are themselves connected by links 62 to a hand-lever 63, Fig. 8. By drawing thisilever into the position' shown by dotted lines in Fig. 7 theslats 47 will be thrown back, as shown by dotted from the slats upon a table 64, which is arranged underneath the table 46 and in the same frame-work. The lever can then be moved back to restore the slats to their original positions. I

Whenit is not desired to coat the roofing 'with sand or gravel, the roofing is drawn directly from the cylinders 19 onto the table,

' as shown by dotted lines 0 in Fig. 6.

WVe claim. 1. In a roofing-machine, the combination of the tank- 4, parallel rollers 7, arranged therein and immersedin the liquid thereof, and the rollers 8, arranged above the rollers 7, one of said rollers 8 being. between the rollers 7 and the others'at the outer sides thereof, substantially as and for the purposes described.

2.' In a roofing-machine, the combination of I the tank 4, rollers 7, arranged therein and immersed in the liquid of the tank, rollers 8,arranged above the rollers 7, and a hinged frame 10,within which the rollers 8 are mounted, substantially as andfor the purposes described.

3. An improvement in the art of making roofing-paper, which consists in passing a web of paper in contact with a spreading-roller of less width than the paper, whereby the paper is coated with adhesive material and the margins are not coated, and then compressing said paper in contact with a second Web of paper, whereby the adhesive material is caused to spread out-to theedges of the two webs, substantially as and for the purposes described.

4. In a paper-roofingmachine, the compression device consisting in a longitudinally-pivoted frame having side bars 16, substantially as and for the purposes described.

5. In a paper-roofing machine, the compressio'h device consisting in a longitudinally pivoted frame having hollow side bars 16, provided with steam-connections, substantially as and for the purposes described.

6. In a, paper-roofing machine, the compression device consisting in a longitudinally-pivoted frame having side bars 16, in combination with a lever fixed to'the axis of the frame and a rack, substantially as and for the purposes described.

7. The combination of the horizontal comprcssion-cylinders 19 and a weight 20, resting thereupon,substantially as and for the purposes described.

8. In a roofing-machine, the sand-pipes 37, whose discharge ends are arranged overthe roofing-sheet at the margins thereof; substan--.

tially as and for the purposes described.-

9. In a roofing-machin e, a paper-roll mounted in a tilting frame, in combination with ad-*. 3' listing mechanism for shifting thefra'me-endwise, substantially as and for the purposes de-' scribed.

10. ,In aroofing-machiue, a primary-rcceiv-Y in'g-tablc 46, situate-at the-delivery end of the machine, and a second table situate below the table 46, said table 46 having abottom whicl r is removable from under the roofing-sheets,

Y whereby the latter are dropped upon the table below, substantially as and for the purposes described.

11. In a roofing-machine, a receiving-table consisting of partible. pivoted slats 47, and bars 61, connecting said slats, substantially as and for the purposes described.

12. In a roofing-machine, the combination of a table situate at the delivery end thereof, gripping-tongs arranged to grasp the paper, a. traveler supporting the tongs, a drum-con: nected with the tongs for drawing it over the table, and a second drum 56, connected with the tongs for retracting them, substantially as and for the purposes described.

13. In a roofing-machine, the combination, with the Web-coating mechanism, of a compression device consisting of bars 16, overand under which the web passes, substantially as and for the purposes described.

' 14. In a roofing-machine, the combination, with the Web-coating mechanism, of a compression device consisting of bars 16, over and under which the web passes, said bars being hollow and provided with connections for the circulation of a heating medium, substantially as and for the purposes described.

15. In a roofing-machine, the combination,

with the web-coating mechanism, of a conipression device situate in the path of the web and constructed to exert a rubbing and com-

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