US1659240A

US1659240A - Machine for forming sheets of insulating material

Info

Publication number: US1659240A
Application number: US125612A
Authority: US
Inventors: Cecil M Clarke
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-07-29
Filing date: 1926-07-29
Publication date: 1928-02-14
Anticipated expiration: 1945-02-14

Description

Feb. 14, 1928.

- 1,659,240 c. M. CLARKE MACHINE FOR FORMING SHEETS OF INSULATING MATERIAL Filed July 29, 1926 7Q Patented F eb. 14, 1928.

UNITED STATES CECIL M. CLARKE, OF CHICAGO, ILLINOIS.

MACHINE FOR FORMING SHEETS OF INSULATING MATERIAL.

Application filed July 29,

The invention is designed primarily to provide means for forming improved insulating sheets for covering pipes, boilers, or the like. An example of the insulating sheet for the manufacture of which this invention is more particularly intended is shown in an application for Letters Patent Serial No. 125,611, filed July 29, 1926. It will be understood, however, that the machine hereinafter described may be employed for other purposes and that the details of the invention may be varied without departing from the scope thereof.

Figure 1 is a View in side elevation of a machine embodying my invention; Figure 2 is a view in elevation of the crushing rolls; Figure 3 is an edge view of an insulating sheet produced on my improved machine; Figure 4 is a view showing how the sheet of Fig. 3 may be coiled to form a pipe covering, and Figures 5 and 6 are edge views of modi lied forms of sheets.

By reference to Figs. 3 and 4 of the drawings, it will be seen that the insulating sheet from which the pipe covering is formed is a composite sheet comprising a corrugated sheet 5, to which is attached a relatively fiat sheet 6, these sheets being preferably of asbestos or like material. In order to form a highly efficient pipe covering (embodying the features of advantage fully set forth in the hereinbefore mentioned application of even date herewith), portions of the composite insulating sheet are crushed and flattened, as indicated at 7 in Fig. 3, while other portionsare left relatively uncrushed as indicated at 8. 1

To effect the periodic crushing or flattening of predetermined portions of the composite sheet, I employ suitable crushing rolls 10 and 11 and provide means whereby these rolls may be thrown out of action while those portions of the insulating sheet that are to remain unfiattened are passing between the crushing rolls. The rolls 10 and 11 are suitably journaled in bearings carried by the frame standards 12, and, as shown, the lower crushing roll 10 has a gear wheel 13 on its shaft 14 by which the driving of the roll 10 will be effected. As shown, the journals 15. of the upper crushing roll 11 are mounted within vertical slots or bearings 16 to permit the upper crushing roll to be raised periodically out of action. On the outer ends of the journals 15 of the roll 11 are fixed the 20 also pass around suitable pulleys 22 the standard 23.

spur wheels 18, the peripheries of the crush- 1926. Serial No. 125312.

ing to the spurs 18 of the spur wheels 18,

so as to insure an accurate movement of the belts 20 with the spur wheels 18. The belts shaft of which is journaled in a frame Referring more particularly to Fig. 1 of the drawings, it will be seen that each of the belts 20 is formed witha thin portion 24 and with a thicker portion 25, these parts merging together along the cam-shaped sur faces 26 of the belt. When the thinner portions 24 of the belts are passing around the.

ing rolls 10 and 11. will be sufficiently 'close together to eflectively crush or flatten the corrugations of the insulating'sheet at such time passing through the crushing roll; but when the thicker portions 25 of-the belts are passing around the spur wheels 18, the engagement of such thicker portions 25 of the belts'with the pulleys 17 of the upper crushing roll 11 will cause the upper crushing roll to be raised out of action so that it will leave that part of the insulating sheet at such time passing between the rolls relatively uncrushed. It will be understood, of course, that various other means may be em ployed to effect the periodic throwing of the crushing rolls into and out of operation without departing from the spirit of the inof the crushing rolls into and out of action. 100

To enable such differentlengths of belts to be employed, I preferably provide the frame or standards 23 that carry the pulleys 22, so that this frame or standards 23 may be adjusted towards and from the crushing rolls. 105

One convenient way to effect this adjustment of the frame or standards 23 is to mount the same upon a base 30, into which will pass adjusting bolts 31 that pass through the flanges 82 of the base or standards 23.

In making a pipe covering such, for example, as illustrated in Fig. 4 of the drawings, it will be seen that the ply or layer of the insulating sheet that comes immediately next the pipe to be covered will be flattened or crushed, and if the pipe should he say three inches in diameter, such flat or crushed portion 7 of the sheet should be approximately nine inches long. So, also, it will be seen by reference to Fig. 4:, that if the insulating covering is to comprise say three layers of the uncrushed sheet, then the length of such uncrushed portion of the sheet would be approximately thirty inches, and if the outer ply of the insulating sheet is to be entirely flattened, the length of such crushed or flattened portion of the sheet should be approximately twelve inches.

By reference to Fig. 3 of the drawings, it will be seen that in forming the insulating sheet with crushed and uncrushed portions, the crushed or flattened portions that are to form both the inner ply and the outermost ply of the insulating covering may come together, and in such case (for a three inch pipe, for example) the combined lengths ofthe flattened or crushed portion will be about twenty-one inches, while the uncrushed portion of the sheet will be about thirty inches long.

It will be understood, of course, that the composite sheet before it is passed through the crushing rolls will be entirely uuerushed and will be in a long continuous strip. As this strip is passed through the crushing rolls, it will be severed to form a plurality of individual sheets of proper length to make the individual pipe coverings, and by reference to Fig. 3 of the drawings, it will be seen that the continuous strip, after it has passed through the crushing roll, will be severed transversely of the fiat or crushed portion so as to leave at one end of each individual strip a flat portion, say nine inches long (to immediately encircle the pipe) and at its other end a flattened or crushed strip say twelve inches long, to form the outer ply of the insulating covering. By varying the spreader belts 20 and by properly proportioning the relatively thick and thin parts of the belts, the insulating sheet may be formed wit-h crushed and uncrushed portions of any desired length.

In addition to effecting the periodic crushing or flattening of predetermined portions of the composite sheet as by crushing the corrugations 5 as indicated at 7 to produce thinner portions, said flattening may be produced by causing the withdrawing means on which the sheet is wound or which receives the sheet from the rollers, to intermittently feed or pull the same faster than usually fed, thereby causing portions of the sheetto be kept-fiat or pulled out flat and relatively plain and smooth between the corrugated portions, as indicated at 7 a in Fig. 5. These flat portions will be used in the same manner as the crushed portions or corrugations heretofore described. 01', the crushed or flattened portions may be smaller corrugations formed intermittently in the same manner as the crushing of the full corrugations is effected as shown at 7 b in Fig. 6 of the drawings.

Vihile I have described what I regard as the preferred embodiment of my invention, it will be seen that the details of the invention may be varied within wide scope without departing therefrom and that features of the invention may be employed without its adoption as an entirety.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a machine for forming sheets of insulating material, the combination with a pair of crushing rolls, of an automatic pattern device passing between said rolls for moving one of said rolls into and out of action with respect to the other roll to cause portions of said sheet to be compressed and to leave other portions of said sheet relatively uncompressed.

2. In a machine for forming sheets of insulating material, the combination with a pair ofcrushing rolls, of means passing between said rolls for automatically throwing said rolls into and out of action to cause portions of said sheets to be compressed and to leave other portions of said sheet relatively uncompressed.

3. In a machine for forming sheets of insulating material, the combination with a pair of crushing rolls, of a pattern device having relatively thin and thick portions and said device passing between said rolls for automatically moving one of said rolls into and out of action with respect to the other roll to cause predetermined lengths of said sheet to be crushed and to leave predetermined lengths of said sheets relatively uncrushed.

4. In a machine for forming sheets of corrugated insulating material, the combination with a pair of crushing rolls, of movable spreader means for periodically separating the crushing rolls to permit portions of the sheet to pass through the rolls without being flattened.

. 5. In a machine for forming sheets of corrugated insulating material, the combination with a pair of crushing rolls, of an endless spreader belt geared to move in unison with said rolls, said belt havinga part adapted to periodically relieve the crushing action of the rolls upon the sheet.

6. In a machine for forming sheets of corrugated insulating material, the combinawith one of said rolls, said belt having relatively thick and thin parts of predetermined lengths to cause the crushing rolls to be thrown into and out of action.

7. In a machine for forming sheets of corrugated insulating material, the combination with a pair of crushing rolls, of a spreader belt geared to move in unison with one of said rolls, said belt being arranged to throw said rolls out of action, a pulley for supporting said belt, and means for adjusting said pulley back and forth to accommodate belts of different lengths.

8. In a machine for forming sheets of corrugated insulating material, the combina tion with a pair of crushing rolls, the upper one of said rolls being vertically movable, of a spur wheel fixed to the lower crushing roll, a belt geared to move in unison with said spur wheel and having relatively thick and thin portions, and a pulley connected to the upper crushing roll and adapted to engage said belt.

9. In a machine for forming sheets of insulating material, the combination with a support and a pair of rolls mounted therein, one of said rolls being loosely mounted in said support, of means passing between said rolls for moving said loosely -mounted roll into and out of action with respect to the other roll to cause portions of said sheet to be flattened and to lea-ve'other portions of said sheet relatively unfiattened.

10. In a machine forforming corrugated sheets of insulating material, the combination with a support and a pair of rolls mounted therein, one of said rolls being loosely mounted in said support, of means passing between said rolls for automatically throwing said loosely mounted roll into and out of action with respect to the other roll to cause predetermined lengths of said sheet to be flattened, and to leave predetermined lengths of said sheets relatively unfiattened.

11. A press of the type defined comprising a feed member for the object to be pressed, a member for exerting pressure on said object, and a control member passing between said aforementioned members and having means thereon for automatically rendering said pressure member inoperative.

12. A press of the type described comprising means for continuously feeding the object to be pressed, a pressure member for exerting pressure on said object, and a control member passing between said aforementioned members and having means thereon for automatically rendering said pressure device alternately inoperative or eiiective as the object is continuously fed therebeneath.-

QECILYM. CLARKE.