US1943215A - Textile roll and method of making the same - Google Patents
Textile roll and method of making the same Download PDFInfo
- Publication number
- US1943215A US1943215A US637638A US63763832A US1943215A US 1943215 A US1943215 A US 1943215A US 637638 A US637638 A US 637638A US 63763832 A US63763832 A US 63763832A US 1943215 A US1943215 A US 1943215A
- Authority
- US
- United States
- Prior art keywords
- strip
- cork
- winding
- same
- mandrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title description 8
- 239000004753 textile Substances 0.000 title description 6
- 238000004804 winding Methods 0.000 description 35
- 239000007799 cork Substances 0.000 description 29
- 239000010410 layer Substances 0.000 description 25
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- -1 for instance Substances 0.000 description 1
- 230000000266 injurious effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0032—Producing rolling bodies, e.g. rollers, wheels, pulleys or pinions
- B29D99/0035—Producing rolling bodies, e.g. rollers, wheels, pulleys or pinions rollers or cylinders having an axial length of several times the diameter, e.g. for embossing, pressing, or printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
- B27D1/086—Manufacture of oblong articles, e.g. tubes by spirally winding veneer blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J5/00—Mechanical working of cork
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/32—Wheels, pinions, pulleys, castors or rollers, Rims
- B29L2031/324—Rollers or cylinders having an axial length of several times the diameter, e.g. embossing, pressing or printing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49544—Roller making
- Y10T29/49547—Assembling preformed components
- Y10T29/49549—Work contacting surface element assembled to core
- Y10T29/49551—Work contacting surface wound about core
Definitions
- the present invention relates to built-up tubes and to methods of forming the same.
- Patent No. 1,730,357, issued October 8, 1929, to W. A. Carpenter there is disclosed a tube primarily intended for use as a covering for textile rolls together with a method of forming the same, such tube being formed in two layers, an outer layer of artificial cork or the like and an inner layer of fabric or any other material well adapted to serve as a core or strengthening layer for the outer covering.
- Such tube or roll covering is formed preferably by helically winding an elongated strip of artificial cork upon the inner strengthening core or tube, the inner surface of the cork being secured to the core by a suitable adhesive.
- the present invention contemplates particularly an improvement in the method of forming tubes of the type disclosed in the Carpenter patent referred, to and an improved tube of this type resulting from the improved method of manufacture.
- One object of the invention is to provide a method of fabrication which results in closer contact of the helical surfaces of the meeting edges of adjacent windings of the cork layer, thus providing a tube or cot which presents a solid cylindrical surface having no gaps or cracks between the edges of adjacent windings.
- artificial cork is, when properly made, well adapted to be bent without breaking and may even be wound around a cylindrical mandrel of relatively small diameter without appreciable cracking of its outer surface. This results from its capacity to elongate under tension to a considerable degree without breaking. Elongation of a strip of cork, of course, will result in a certain reduction of cross-sectional area, the strip becoming attenuated when tensioned.
- the outer layer of cork is placed under a considerably greater tension than is the inner layer, the inner layer as a matter of fact being subjected to little or no tension or even, in some cases, to a slight compression.
- the winding operation involves placing the outer areas of the crosssection in tension, the degree of tension lessening as the inner face of the cork strip is approached.
- the outer layers of cork are reduced in cross-section as a result of the bending operation while the innermost layers are not, it being appreciated, of course, that the layers referred to are theoretical and not actual, a solid strip of artificial cork only being under discussion.
- I provide a cork strip which is, in the first instance and prior to the winding operation, so cut as to be trapezoidal in all cross-sections.
- the operation of helically winding the strip so formed upon a. mandrel results in the narrowing of the wider face of the trapezoid, which face is always outermost during the winding operation and in the completed tube, so that, as a result of this narrowing, it is exactly coextensive in width with the inner face.
- the helical edge surfaces of adjacent windings are contiguous throughout and gaps or cracks between these windings eliminated.
- Figure 1 is illustrative, rather diagrammatically, of a forming mandrel for tubes, showing a backing strip and an artificial cork facing partially wound thereon;
- Figure 2 is a transverse section through the strip of artificial cork shown in Figure 1 prior to winding;
- Figure 3 is a transverse section through the same strip subsequent to winding
- Figure 4 is a transverse section through an all00 ternative form of cork strip prior to the winding operation
- Figure 5 is a transverse section through the same after having been wound upon the mandrel
- Figure 6 is an axial section through a cork cov- 05 ering for a textile roll and wound in the improved manner
- Figure 7 is a perspective view of the same.
- the strip is the backing strip which forms a reinforcement for the completed tube and which is first helically wound upon the mandrel. It is generally a comparatively thin strip of material, for instance, fabric, and it is usually necessary to take no precautions to secure exact and precise meeting of its edge surfaces as is necessary in the case of the outer covering. It will be appreciated that the inner strip is a strengthening strip and does not contact with the thread in a drawing operation, and hence slight gaps between the edges of adiacent windings are not injurious. Furthermore, as has already been pointed out, it is usually quite thin.
- the outer layer is the external layer, and its outer surface should not only be truly cylindrical but should be free of surface imperfections so far as possible.
- the strip 11 which goes to make up this outer layer is preferably of artificial cork, which is resilient, the layer having suflicient thickness to provide the necessary resiliency.
- the artificial cork strip Prior to the winding operation the artificial cork strip, which is indicated at 11, has its edges beveled as shown in Figure 2 to a rather exaggerated degree so that it is in the form of a trapezoid. It is then wound helically upon the core already formed by the strip 10, the wider surface of the strip being outermost asit is wound upon the mandrel.
- the outer layers of strip 11 are, as has been previously explained, placed under considerably'greater tension than the inner layers and, as a result of this tensioning, are attenuated while the inner layers are not.
- the strip is properly cut in the first instance, its outer surface will, after the winding operation, be exactly the same in width as the inner surface, and likewise all intermediate layers will have this identical width so that a cross-section through the strip after the winding operation will be in the form of a parallelogram, such as indicated in Figure 3.
- the edge surfaces of one winding therefore, will be contiguous with the edge surfaces of adjacent windings, and there will be no gaps or cracks left between the windings as heretofore.
- the inner and outer windings are secured together by an adhesive, and the completed tube is thereafter cut into suitable lengths, the surface being ground if necessary to provide coverings having smooth surfaces and of identical thicknesses.
- the extent to which the edges of the strip should be relatively inclined prior to the winding operation will depend upon several factors. Obviously it is important to consider the diameter of the mandrel about which the strip is to be wound.
- the outer layer of an artificial cork strip wound about a mandrel of small diameter will, of course, be tensioned considerably more than the outer layer of a strip of the same thickness wound about a mandrel of larger diameter.
- the thickness of the cork strip must be taken into consideration as greater tension will exist in the outer layer of a. relatively thick strip than will exist in the outer layer of a relatively thin strip after winding both strips upon a. mandrel of a given diameter.
- consideration must be given to the character of the cork or other material itself.
- edge surfaces of the original strip need not be approximately normal to the inner and outer surfaces as shown in Figure 2. These edges may both be inclined as shown in Figure 4, the sole consideration being the relative inclination of the edge surfaces to the proper extent so that the strip after winding will be in the form of a parallelogram in all cross-sections as shown in Figure 5.
- the invention contemplates particularly the use of artificial cork to form the outer or surface layer of the completed roll covering. It is not limited, however, to the use of an artificial cork strip and contemplates the use of any material which is well adapted for the purpose.
- the method of fabricating tubes, cots, or the like which comprises forming an elongated strip of material having the capacity to stretch under tension, all cross-sections through said strip being trapezoidal and of equal area, and thereafter Winding the same helically upon a cylindrical mandrel, the wider of the parallel faces being outermost, the bending incident to the winding operation deforming the strip transversely and causing all cross-sections thereof to become parallelograms, whereby the helical faces of the meeting edges of adjacent windings will closely engage.
- the method of fabricating tubes, cots, or the like which comprises forming an elongated strip of artificial cork, all cross-sections through said strip being trapezoidal and of equal area, and thereafter winding the same helically upon a cylindrical mandrel, the wider of the parallel faces being outermost, the bending incident to the winding operation deforming the strip transversely and causing all cross-sections thereof to become parallelograms, whereby the helical faces of meeting edges of adjacent windings will closely engage.
Description
Jan. 9, 1934. c. K. DUNLAP 1,943,215
TEXTILE ROLL AND METHOD OF MAKING THE SAME Filed Oct. 13, 1952 Patented Jan. 9, 1934 UNITE STATES ATE-NT OFFICE TEXTILE ROLL AND METHOD OF MAKING THE SAME Application October 13, 1932. Serial No. 637,638
2 Claims.
The present invention relates to built-up tubes and to methods of forming the same.
In Patent No. 1,730,357, issued October 8, 1929, to W. A. Carpenter, there is disclosed a tube primarily intended for use as a covering for textile rolls together with a method of forming the same, such tube being formed in two layers, an outer layer of artificial cork or the like and an inner layer of fabric or any other material well adapted to serve as a core or strengthening layer for the outer covering. Such tube or roll covering is formed preferably by helically winding an elongated strip of artificial cork upon the inner strengthening core or tube, the inner surface of the cork being secured to the core by a suitable adhesive. The present invention contemplates particularly an improvement in the method of forming tubes of the type disclosed in the Carpenter patent referred, to and an improved tube of this type resulting from the improved method of manufacture.
One object of the invention is to provide a method of fabrication which results in closer contact of the helical surfaces of the meeting edges of adjacent windings of the cork layer, thus providing a tube or cot which presents a solid cylindrical surface having no gaps or cracks between the edges of adjacent windings.
As is well-known, artificial cork is, when properly made, well adapted to be bent without breaking and may even be wound around a cylindrical mandrel of relatively small diameter without appreciable cracking of its outer surface. This results from its capacity to elongate under tension to a considerable degree without breaking. Elongation of a strip of cork, of course, will result in a certain reduction of cross-sectional area, the strip becoming attenuated when tensioned. In winding a strip of cork about a mandrel of relatively small radius, the outer layer of cork is placed under a considerably greater tension than is the inner layer, the inner layer as a matter of fact being subjected to little or no tension or even, in some cases, to a slight compression. It may be said, therefore, that the winding operation involves placing the outer areas of the crosssection in tension, the degree of tension lessening as the inner face of the cork strip is approached. Naturally, therefore, the outer layers of cork are reduced in cross-section as a result of the bending operation while the innermost layers are not, it being appreciated, of course, that the layers referred to are theoretical and not actual, a solid strip of artificial cork only being under discussion.
As a. result of the tensioning of the outer layers during winding, unaccompanied by tensioning of the inner layers of the strip of cork, a cork strip which originally was, in all cross-sections, a parallelogram becomes, after the winding W operation, trapezoidal in all cross-sections, the outermost face being narrowed slightly while the innermost face remains the same, the formerly parallel edge surfaces being inclined to each other. As a result, the completed tube is imperfeet, the mutually facing edge surfaces of adjacent windings not being truly contiguous but a V-shaped groove being left between these surfaces which is wider at the cylindrical outer surface of the completed tube than at the core there- Y0 of. These cracks or helical grooves are objectionable, particularly where the completed article is to be used as a textile roll covering, and the presentinvention provides an improved process for the elimination of these winding cracks 7 or gaps.
Thus, I provide a cork strip which is, in the first instance and prior to the winding operation, so cut as to be trapezoidal in all cross-sections. The operation of helically winding the strip so formed upon a. mandrel results in the narrowing of the wider face of the trapezoid, which face is always outermost during the winding operation and in the completed tube, so that, as a result of this narrowing, it is exactly coextensive in width with the inner face. As a result, the helical edge surfaces of adjacent windings are contiguous throughout and gaps or cracks between these windings eliminated.
In the accompanying drawing: to
Figure 1 is illustrative, rather diagrammatically, of a forming mandrel for tubes, showing a backing strip and an artificial cork facing partially wound thereon;
Figure 2 is a transverse section through the strip of artificial cork shown in Figure 1 prior to winding;
Figure 3 is a transverse section through the same strip subsequent to winding;
Figure 4 is a transverse section through an all00 ternative form of cork strip prior to the winding operation;
Figure 5 is a transverse section through the same after having been wound upon the mandrel;
Figure 6 is an axial section through a cork cov- 05 ering for a textile roll and wound in the improved manner; and
Figure 7 is a perspective view of the same.
The strip, indicated at 10 in Figure 1, is the backing strip which forms a reinforcement for the completed tube and which is first helically wound upon the mandrel. It is generally a comparatively thin strip of material, for instance, fabric, and it is usually necessary to take no precautions to secure exact and precise meeting of its edge surfaces as is necessary in the case of the outer covering. It will be appreciated that the inner strip is a strengthening strip and does not contact with the thread in a drawing operation, and hence slight gaps between the edges of adiacent windings are not injurious. Furthermore, as has already been pointed out, it is usually quite thin. The outer layer, however, is the external layer, and its outer surface should not only be truly cylindrical but should be free of surface imperfections so far as possible. The strip 11 which goes to make up this outer layer is preferably of artificial cork, which is resilient, the layer having suflicient thickness to provide the necessary resiliency.
Prior to the winding operation the artificial cork strip, which is indicated at 11, has its edges beveled as shown in Figure 2 to a rather exaggerated degree so that it is in the form of a trapezoid. It is then wound helically upon the core already formed by the strip 10, the wider surface of the strip being outermost asit is wound upon the mandrel. The outer layers of strip 11 are, as has been previously explained, placed under considerably'greater tension than the inner layers and, as a result of this tensioning, are attenuated while the inner layers are not. If the strip is properly cut in the first instance, its outer surface will, after the winding operation, be exactly the same in width as the inner surface, and likewise all intermediate layers will have this identical width so that a cross-section through the strip after the winding operation will be in the form of a parallelogram, such as indicated in Figure 3. The edge surfaces of one winding, therefore, will be contiguous with the edge surfaces of adjacent windings, and there will be no gaps or cracks left between the windings as heretofore. The inner and outer windings are secured together by an adhesive, and the completed tube is thereafter cut into suitable lengths, the surface being ground if necessary to provide coverings having smooth surfaces and of identical thicknesses.
The extent to which the edges of the strip should be relatively inclined prior to the winding operation will depend upon several factors. Obviously it is important to consider the diameter of the mandrel about which the strip is to be wound. The outer layer of an artificial cork strip wound about a mandrel of small diameter will, of course, be tensioned considerably more than the outer layer of a strip of the same thickness wound about a mandrel of larger diameter. Likewise the thickness of the cork strip must be taken into consideration as greater tension will exist in the outer layer of a. relatively thick strip than will exist in the outer layer of a relatively thin strip after winding both strips upon a. mandrel of a given diameter. Finally, consideration must be given to the character of the cork or other material itself. Artificial cork particularly, as is well-known, varies in its capaclty to stretch and laterally deform due to stretching by reason of variations in the nature of the binder which is used to cause the various particles of cork to adhere and also by reason of variations in the pressures to which the cork particles and binder are subjected in the manufacture of the same.
It is not possible, therefore, to set down any definite rule for establishing the proper an ularity between the edge surfaces to secure e desired result. It is found in actual operati n, however, that it is a simple matter to establi by actual test, the exact angle which the edge surfaces of the strip should make with each other prior to winding in order to obtain the desired result.
It is, of course, apparent that the edge surfaces of the original strip need not be approximately normal to the inner and outer surfaces as shown in Figure 2. These edges may both be inclined as shown in Figure 4, the sole consideration being the relative inclination of the edge surfaces to the proper extent so that the strip after winding will be in the form of a parallelogram in all cross-sections as shown in Figure 5. The invention contemplates particularly the use of artificial cork to form the outer or surface layer of the completed roll covering. It is not limited, however, to the use of an artificial cork strip and contemplates the use of any material which is well adapted for the purpose.
Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:
1. The method of fabricating tubes, cots, or the like which comprises forming an elongated strip of material having the capacity to stretch under tension, all cross-sections through said strip being trapezoidal and of equal area, and thereafter Winding the same helically upon a cylindrical mandrel, the wider of the parallel faces being outermost, the bending incident to the winding operation deforming the strip transversely and causing all cross-sections thereof to become parallelograms, whereby the helical faces of the meeting edges of adjacent windings will closely engage.
2. The method of fabricating tubes, cots, or the like which comprises forming an elongated strip of artificial cork, all cross-sections through said strip being trapezoidal and of equal area, and thereafter winding the same helically upon a cylindrical mandrel, the wider of the parallel faces being outermost, the bending incident to the winding operation deforming the strip transversely and causing all cross-sections thereof to become parallelograms, whereby the helical faces of meeting edges of adjacent windings will closely engage.
CHARLES K. DUNLAP.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US637638A US1943215A (en) | 1932-10-13 | 1932-10-13 | Textile roll and method of making the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US637638A US1943215A (en) | 1932-10-13 | 1932-10-13 | Textile roll and method of making the same |
Publications (1)
Publication Number | Publication Date |
---|---|
US1943215A true US1943215A (en) | 1934-01-09 |
Family
ID=24556783
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US637638A Expired - Lifetime US1943215A (en) | 1932-10-13 | 1932-10-13 | Textile roll and method of making the same |
Country Status (1)
Country | Link |
---|---|
US (1) | US1943215A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3823456A (en) * | 1972-07-01 | 1974-07-16 | Agfa Gevaert Ag | Method of manufacturing a roller |
US5307842A (en) * | 1990-12-21 | 1994-05-03 | Coflexip | Flexible conduit with improved thermal protection comprising cork |
US5309631A (en) * | 1992-08-31 | 1994-05-10 | Tohoyogyo Co., Ltd. | Roll manufacturing method |
US5537745A (en) * | 1995-01-31 | 1996-07-23 | The Wooster Brush Company | Method and apparatus for making paint roller cover with thermo plastic core |
US6231711B1 (en) | 1995-01-31 | 2001-05-15 | The Wooster Brush Company | Methods and apparatus for making paint roller covers with thermoplastic cores |
US20120018025A1 (en) * | 2009-03-18 | 2012-01-26 | Deepflex Inc. | Composite flexible pipe and method of manufacture |
DE102013208166A1 (en) * | 2013-05-03 | 2014-11-06 | LignoTUBE technologies GmbH & Co. KG | Device for producing a pipe consisting of several layers of sheets of wood as veneers and pipe produced therewith |
ES2949734A1 (en) * | 2023-06-28 | 2023-10-02 | Ruiz Ricardo Soto | MANUFACTURING PROCEDURE OF MULTI-CHANNEL AGGLOMERATED CORK TUBES (Machine-translation by Google Translate, not legally binding) |
-
1932
- 1932-10-13 US US637638A patent/US1943215A/en not_active Expired - Lifetime
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3823456A (en) * | 1972-07-01 | 1974-07-16 | Agfa Gevaert Ag | Method of manufacturing a roller |
US5307842A (en) * | 1990-12-21 | 1994-05-03 | Coflexip | Flexible conduit with improved thermal protection comprising cork |
US5309631A (en) * | 1992-08-31 | 1994-05-10 | Tohoyogyo Co., Ltd. | Roll manufacturing method |
US5537745A (en) * | 1995-01-31 | 1996-07-23 | The Wooster Brush Company | Method and apparatus for making paint roller cover with thermo plastic core |
US5694688A (en) * | 1995-01-31 | 1997-12-09 | The Wooster Brush Company | Method and apparatus for making paint roller cover |
US6231711B1 (en) | 1995-01-31 | 2001-05-15 | The Wooster Brush Company | Methods and apparatus for making paint roller covers with thermoplastic cores |
US20120018025A1 (en) * | 2009-03-18 | 2012-01-26 | Deepflex Inc. | Composite flexible pipe and method of manufacture |
US8656961B2 (en) * | 2009-03-18 | 2014-02-25 | Deepflex Inc. | Composite flexible pipe and method of manufacture |
DE102013208166A1 (en) * | 2013-05-03 | 2014-11-06 | LignoTUBE technologies GmbH & Co. KG | Device for producing a pipe consisting of several layers of sheets of wood as veneers and pipe produced therewith |
DE102013208166B4 (en) | 2013-05-03 | 2020-04-23 | Dresdner Gardinen- und Spitzenmanufaktur M. & S. Schröder GmbH & Co. KG | With a device for the production of a pipe made of several layers of sheets of wood as veneer |
ES2949734A1 (en) * | 2023-06-28 | 2023-10-02 | Ruiz Ricardo Soto | MANUFACTURING PROCEDURE OF MULTI-CHANNEL AGGLOMERATED CORK TUBES (Machine-translation by Google Translate, not legally binding) |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1943215A (en) | Textile roll and method of making the same | |
US2495761A (en) | Method of splicing sheet material | |
US2785700A (en) | Paper tube and method of making the same | |
US3428507A (en) | Method of making a hose pipe of helically wound strips of thermoplastic material | |
US2114517A (en) | Tension band | |
DE4134323A1 (en) | METHOD FOR PRODUCING A WRAPPING TAPE FOR A VEHICLE AIR TIRE | |
US5231783A (en) | Method of making fishing rod and fishing rod made by the method | |
US2231808A (en) | Elastic thread and elastic fabric | |
US5776026A (en) | Power transmission belt and method of manufacturing the same | |
US1911310A (en) | Wire faced roll for paper machines | |
US2319534A (en) | Laminated glass and method of making same | |
JPS5942101B2 (en) | Beam for tape staining | |
US1657280A (en) | Process of making plywood tubes | |
US2247981A (en) | Method of forming lock washers | |
US1939859A (en) | Driving belt and method of making the same | |
US2035320A (en) | Method of manufacturing cellulose tubes | |
US1939264A (en) | Electric cable | |
US2669280A (en) | Method of makign v-belts | |
US3555140A (en) | Method of making contact rolls | |
US3113061A (en) | Method of making a glass reinforced fibrous web | |
US978974A (en) | Method of making steel spring-washers. | |
US2054354A (en) | Elastic thread and process of making the same | |
US1992448A (en) | Covered elastic thread and method of covering such thread | |
US2079173A (en) | Endless clutch facing and method of manufacture of the same | |
US1978240A (en) | Making of packing rings |