US1302414A - Roofing-cutter. - Google Patents

Description

c. c. NERNESS ROOFING CUTTER.

APPLICATION FlLED JULY 12, I918.

Patented Apr. 29, 1919.

3 SHEETS-SHEET 1.

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} ROOFING CUTTER.

APPLICATION FILED IuLv 12. ms.

Patented Apr; 29, 1919.

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C. C. NERNESS.

ROOFING CUTTER.

APPLICATION FILED JULY12. 191s.

Patented Apr. 29, 1919.

3 SHEETSSHET 3.

CARL G. NERNESS, OMAHA, NEBRASKA.

ROOFING-CUTTER.

Specification of Letters Patent.

Patented Apr. 29, T9199.

Application filed July 12, 1918. Serial No. 244,569.

To all whom it may concern:

Be it known that I, CARL C. NERNESS, a citizen of the United States, residing at Omaha, in the county of Douglas and State of Nebraska, have invented certain new and useful Improvements in Roofing-Cutters, of which the following is a specification.

This invention relates to sheet cutting machines, and more particularly to an improved roofing cutter. 7

The object of the invention is to provide an improved machine for cutting sheet material used for roofing purposes, and more particularly compositions, such as asbestos and rubber composition roofings or the like, into sultable designs for roofing and ornamenting purposes.

A further object of the invention is to obviate the necessity of cutting roofing material with shears, knives, or chisels and to provide a machine which is designed to hold a roll of the material and to pass the same through rollers, certain of which are provided with means for cutting the material, and additional means being provided to rewind the entire strip to produce a roll, the machine being driven by hand power or otherwise and having novel means for cooperating with the cutters to prevent gumming of the same.

With the above and other objects in view, as will appear as the description proceeds, the invention comprises the various novel features of construction and arrangement of parts which will be more fully described herein and set forth with particularity in the claims appended hereto. 7

Reference is had to the accompanying drawings forming a part of this application, in which like reference characters indi cate the corresponding parts throughout the several views, in which Figure 1 is a side elevation of my improved roofing cutter,

Fig. 2 is a plan view thereof,

Fig. 3 is a longitudinal sectional view,

Figgi is a transverse sectional view taken through the winding drum, the parts being shown enlarged,

Fig. 5 is a fragmentary perspective view showing the ornamental cutter blades on one of the cutting rollers, and

Fig. 6 is a fragmentary plan view of a portion of roofing as cut by the machine.

Referring to the drawings in detail, my improved roofing cutter is shown as comprising an elongated rectangular frame 10 including side portions 11 and end portions 12 supported upon corner legs 13 suitably braced to the frame by means of diagonal braces 14, two of which are provided on each side and on each end, so as to provide a firm supporting structure.

Arranged at one end of the frame and at opposite sides thereof, are uprights 15, suitably braced as shown at 16 and formed with or separately from the adjacent leg portions 13, as desired. These standards are designed to rotatably support a horizontal shaft 17 upon which are mounted inwardly tapered or wedge-like spools 18, in order to accommodate a roll 19 of roofing material, usually consisting of a strip of asbestos, rubber, or other composition material commonly employed for roofing or like purposes, although it, is to be understood that the machine is capable of adaptation to cutting sheet material in general.

Journale'd transversely of the frame in re cesses or bearings provided in the opposed side portions 11 and in spaced parallel relation are a series of lower rollers, including a roller 20, the shaft of which is designated at 21, a cutting roller 22 having a corresponding shaft, another smooth roller 23, and a final cutting roller 24:, the latter two rollers being mounted upon similar shafts j ournaled in the side portions of the frame, as is particularly shown in Fig. 1.

Arranged over each of said rollers and the shafts thereof. are a plurality of opposed uprights 25 having slotted bearings 26 receiving the journaled ends of shafts 27 of an upper series of smooth rollers 28. which serve as compression rollers. For this purpose the shafts 27 of the rollers 28 are held resiliently and forcibly in contact with the lower series of rollers through the medium of springs or like means 29 mounted in the slotted bearings and being capable of adjustment in tension through the medium of adjusting screws 30 engaged through transverse strips 31 connecting opposed pairs of uprights or standards through the medium of the slots therein, and hold the same equidistantlv spaced apart. These strips are provided with vertically grooved end portions receiving the opposed sides of the bearings at the slots above the springs 29 so that the tension of the springs can be adjusted as specified.

The rollers 20 and 23 are smooth, and all of the lower series of rollers are provided with flanges 32 adapted to limit the sidewise displacement of the strip of roofing material, as the latter is fed from the roll mounted upon the feeding shaft or roller. The rollers 20 and 23 are smooth, while the roller 22 is designed to carry the cutting blades 33 conforming to the design which it is desired to produce. As shown, these blades are arranged in pairs of V-shaped form, the cutting edges 34 thereof being flanged outwardly, and two of said blades being fitted together to completely encircle the roller and detachably secured thereto by suitable fastening means, which may consist of screws 35, so that the blades can be removed and new ones applied to produce different cutting effects or designs. As shown, two of such cutting elements are provided in spaced relation to the center of the roller 22 and intermediately and on opposite sides of said cutting elements, rubber bands 36, preferably three, are provided to keep the strip or roofing sheeting even with the cutters.

The roller 24 is provided intermediately of its ends with a central circular cutting blade 37 designed to cut or split the strips longitudinally along the line 38 in the illustration of the material shown in Fig. 6 of the drawings. The cutters 33 form the zigzag out, as shown at 39 in Fig. 6, this effect being produced on opposite sides of the central cut 38, although it is to be understood that the design of the out instead of being V-shaped in outline, may be scalloped, curved, or otherwise, and that the incisions may be broad or narrow, according to the design to be produced. A plurality of rubber rings or hands 40 are also provided upon the roller 24, preferably two, on each side of the cutter 37, also for the purpose of keeping the roofing material or strip even with the cutter, so that the cutting will also always take place equidistantly of the side edges of the strip. Disposed adjacent to each of the rollers 22 and 24, are transverse shafts 41, each carrying brushes 42 adjacent to each cutter or cutting blade, and designed to dip into pans 43 containing soapsuds or other suitable liquid, for preventing the cutter from getting gummy, due to the adhesion of the material of the strip or roofing material thereto. These brushes, together with the shaft thereof, are obviously rotated as the rollers 22 and 24 are rotated during the cutting operation, which will be hereinafter more fully set forth.

In order to rotate the various rollers for the purpose of transmitting the strip 19 through the machine, intermeshing gears 44 are provided upon the shafts of the various rollers and intermediate shafts 21 at one side of the frame, opposite to that adjacent the ends of the rollers, on which the flanges 32 are provided and transversely of the frame there is provided a drive shaft 45 having an operating handle 46 constituting means for turning the shaft whereby to drive the rollers through the medium of a gear wheel 47 mounted on the shaft 45 and mesh ing with the adjacent gear wheels 44 of the rollers 22 and 23. In operation, the shaft 45 may be suitably rotated by any other means than the handle 46, and is rotated in the direction indicated by the arrow shown in Fig. 1 of the drawings, so as to transmit the strip through the machine cut as described and shown in connection with Fig. 6 of the drawings.

At the rear of the machine, a winding drum or roller 48 is provided, said roller being mounted in the uprights at that end, through the medium of a shaft 49, the drum being mounted on a tubular shaft 50 rotatable on the shaft 49, the shaft 49 having a friction disk 51 at one end normally pressed against a disk 52 fixed to the adjacent end of the tubular shaft 50, as by means of an adjustable coil spring 53, and constituting a clutch member so as to operatively connect the shafts to rotate as one, and thereby impart rotation to the drum or roller 48 for the purpose of winding the strip thereon. This means also furnishes a clutch by which the drum or roller will slip as the winding operation is continued, and the roll becomes larger thereby taking up more material during the cutting operation. In order to rotate the drum a sprocket wheel 54 is fixed to the opposite end of the shafts 49, preferably on the near side and on the same side on which the gear wheels are provided, the shaft 21 of the roller 24 also having a sprocket wheel 55 fixed thereto, while engaged around the sprocket wheels is an endless drive chain 56, so that when the rollers are operated, the winding drum or roller will be rotated from the roller 24.

From the foregoing description taken in connection with the accompanying drawings, it is thought that a clear and comprehensive understanding of the construction, operation, and advantages of my invention may be had, and while I have shown and described the device as embodying a specific structure, I desire that it be understood that such changes may be made in said structure as do not depart from the spirit and scope of the invention as claimed.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A cutting machine of the class described, comprising a frame, a series of rollers journaled in the frame, cutters carried by alternate rollers, the cutters of one roller being spaced apart to cut a fanciful configuration at either side of the center and the other cutter serving to sever the strip at the center, compression means coacting with said rollers, a feeding shaft adapted to receive a roll of strip material to be out, said strip passing between said rollers, a winding drum for said strip, means on the rollers carrying the cutters to guide the strips uniformly and including rings of elastic material on either side of each cutter, means to prevent endwise displacement of the strip, intergeared drive connections between said rollers, a drive shaft for rotating said rollers and drum, cleaning means for said cutters, said cutters being detachably secured to the rollers and means to permit slippage of the winding drum upon the diameter of the roll increasing thereon.

2. In a roofing cutter, a supporting frame, bracing means for said frame, slotted uprights arranged upon the frame, compression rollers adjustably mounted therein, other rollers journaled in the frame in spaced parallel relation beneath the first mentioned rollers, gears cooperating with said rollers and disposed in mesh whereby the rollers will operate simultaneously, means for rotating said rollers, spaced design cutting members arranged upon one of said rollers, a splitting cutter arranged upon another of said rollers, rubber guiding means arranged upon said rollers carrying the cutters, brushes for cleaning said cutters for preventing gumming thereof, moistening means for said brushes, a feeding shaft to carry the roll of strip material to be cut, a winding drum, operative connections between the winding drum and one of said rollers, said Winding drum being rotatably supported at the opposite end of the machine with respect to the position of the feeding shaft, and friction clutch means cooperating with the winding drum and the drive mechanism thereof to permit the drum to slip as the material is wound thereon and the diameter of the roll increases.

3. In a roofing cutter, a supporting frame, bracing means for said frame, slotted uprights arranged upon the frame, compression rollers adjustably mounted therein, other rollers journaled in the frame in spaced parallel relation beneath the first mentioned rollers, gears cooperating with said rollers and disposed in mesh whereby the rollers will operate simultaneously, means for rotating said rollers, spaced design cutting membersarranged upon one of said rollers, a splitting cutter arranged upon another of said rollers, rubber guiding means arranged upon said rollers carrying the cutters, brushes for cleaning said cutters for preventing gumming thereof, moistening means for said brushes, a feeding shaft to carry the roll of strip material to be cut, a winding drum, operative connections between the winding drum and one of said rollers, said winding drum being'rotatably supported at the opposite end of the machine with respect to the position of the feeding shaft, a shaft rotatably supporting the drum, a tubular shaft on the first mentioned shaft, friction disks fixed to said shaft and engaging with each other, and means to cause frictional engagement of said disks and to permit slipping thereof one with respect to the other whereby the rotation of the drum will be retarded during the Winding of the strip thereon as out.

In testimony whereof, I affix my signature hereto.

CARL C. NERNESS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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