US1584371A - Method of severing rubber - Google Patents
Method of severing rubber Download PDFInfo
- Publication number
- US1584371A US1584371A US49781A US4978125A US1584371A US 1584371 A US1584371 A US 1584371A US 49781 A US49781 A US 49781A US 4978125 A US4978125 A US 4978125A US 1584371 A US1584371 A US 1584371A
- Authority
- US
- United States
- Prior art keywords
- rubber
- severing
- cutting
- temperature
- heated
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
- B26F3/06—Severing by using heat
- B26F3/08—Severing by using heat with heated members
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- 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
- Y10T83/00—Cutting
- Y10T83/04—Processes
-
- 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
- Y10T83/00—Cutting
- Y10T83/04—Processes
- Y10T83/0405—With preparatory or simultaneous ancillary treatment of work
- Y10T83/041—By heating or cooling
- Y10T83/0414—At localized area [e.g., line of separation]
-
- 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
- Y10T83/00—Cutting
- Y10T83/283—With means to control or modify temperature of apparatus or work
- Y10T83/293—Of tool
Definitions
- My present invention relates to improvements in methods of cutting rubber. Heretofore this has been a difficult operation due to the tendency of the rubber to stick or adhere to the surface of the cutting implement.
- Figure 1 is an elevation (partly in-section) showing 'what I at present consider the best form of severing instrument for carrying out my improved process.
- Fig. 2 is a section on line 2 2 of Fig. 1.
- Fig. 3 is a section on line 3-3 of Fig. 1.
- Fig. 4 is diagrammatic of the device in operation.
- the numerall 1 designates a suitable handle of insulating material which supp Orts the severing element. in the shape of a relatively thin blade 2 of electric resistance metal designed to be heated by the passage of electric current which is supplied thereto by the conductors 3, 3 connected to a suitable source of current through a current controlling device or rheostat, whereby the temperature of the severing loop may be regulated.
- the loop may conveniently be formed of nichrome wire, though it will be understood that I do not limit myself to this material. It will also be understood that by the term wire I do not mean to limit myself to any particular shape in cross section, though that shown is desirable.l
- the handle encompasses a frame comprising parallel members 4 and ⁇ 5 having odset ends 4f and 5a, to which the ends of the the member 6, the nut being provided with a spring enclosing skirt 7 a.
- the current is turned on till the resistance element is heated to the desired degree, preferably a cherry red, and one side of the knife is pressed against the edge or side of the rubber to be cut, whereupon it quickly penetrates and passes through the rubber.
- the instrument is reeiprocated during such pressmg as this tends to keep the temperature of the lresistance element even, due to the ortions thereof which pass into and out o the ⁇ rubber.
- FIG. 2 A specific example of cutting is illustratedv in Fig. 2, wherein I have shown at R a plurality of rubber sheets confined between pattern plates 8 and 8a, an edge or the edges of which serve as a guide for the severing device.
- pattern plates I make of heat resisting material such for example as asbestos board, which will not be injured by the heat or reduce the temperature of the severing element, as the latter contacts with the edge of the pattern and follows the contour thereof.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Description
May 11 1926.. 1,584,371
R. T. GRIFFITHS METHOD OF SEVERING RUBBER Filed Augustv 12, 1925 wwntoz @11 VldMmM/Mhw euromunt Patented May 1l, 1926.
UNITED STATES RICHARD T. GRIFFITHS, OF AKRON, OHIO, ASSIGNOR T0 THE MILLER 1,584,371 PATENT OFFICE.
RUBBER corr- PANY, OF AKRON, OHIO, A. CORPORATION OF OHIO.
METHOD OF SEVERING RUBBER.
Application filed August 12, 1925. Serial No. 49,781.
My present invention relates to improvements in methods of cutting rubber. Heretofore this has been a difficult operation due to the tendency of the rubber to stick or adhere to the surface of the cutting implement.
I have discovered that if a severing element is heated to and maintained at a certain temperature and pressed against the rubber, the latter will be broken down or melted when it contacts with the heated element, which will pass readily through the rubber, analogous to a cutting action, but much more eflicaciously, as the progressive melting or breaking down of the rubber results in the production of an oily substance which facilitates the passage of the severing element.
The invention includes the novel method hereinafter described, and particularly defined by the appended claims.
In order that the invention may be more readily understood, reference is made to accompanying drawings, in which Figure 1 is an elevation (partly in-section) showing 'what I at present consider the best form of severing instrument for carrying out my improved process.
Fig. 2 is a section on line 2 2 of Fig. 1.
Fig. 3 is a section on line 3-3 of Fig. 1.
Fig. 4 is diagrammatic of the device in operation.
Referring to this drawing, the numerall 1 designates a suitable handle of insulating material which supp Orts the severing element. in the shape of a relatively thin blade 2 of electric resistance metal designed to be heated by the passage of electric current which is supplied thereto by the conductors 3, 3 connected to a suitable source of current through a current controlling device or rheostat, whereby the temperature of the severing loop may be regulated.
The loop may conveniently be formed of nichrome wire, though it will be understood that I do not limit myself to this material. It will also be understood that by the term wire I do not mean to limit myself to any particular shape in cross section, though that shown is desirable.l
In practice I prefer to support the blade in the manner shown in the drawings, in which the handle encompasses a frame comprising parallel members 4 and `5 having odset ends 4f and 5a, to which the ends of the the member 6, the nut being provided with a spring enclosing skirt 7 a.
In carrying out the process the current is turned on till the resistance element is heated to the desired degree, preferably a cherry red, and one side of the knife is pressed against the edge or side of the rubber to be cut, whereupon it quickly penetrates and passes through the rubber. I have found that the action will be facilitated if the instrument is reeiprocated during such pressmg as this tends to keep the temperature of the lresistance element even, due to the ortions thereof which pass into and out o the` rubber.
A specific example of cutting is illustratedv in Fig. 2, wherein I have shown at R a plurality of rubber sheets confined between pattern plates 8 and 8a, an edge or the edges of which serve as a guide for the severing device. Such pattern plates I make of heat resisting material such for example as asbestos board, which will not be injured by the heat or reduce the temperature of the severing element, as the latter contacts with the edge of the pattern and follows the contour thereof.
Having thus described my invention, what I claim is 1. The hereindescribed method of cutting rubber which consists in pressing thereagainst at the point to be severed a relatively narrow severing element and maintaining said element at a temperature which will break down the rubber without burning the same.
2. The hereindescribed method of cutting rubber which consists in pressing thereagainst at the point to be severed, a severing element of wire like shape which is maintained at afcherry red heat during the severing operation.
3. The hereindescribedmethod of cutting or severing rubber, which consistsin applyrigidly secured to the oii'set frame4 ing to a surface of the rubber a pattern of heat resisting material, and pressing against the rubber and in contact with and'guided by said edge, a severing element heated to a temperature sufficient to melt the rubber.
4. The hereindescrbed method of cutting rubber sheets, which consists in confining the sheets between pattern plates ofv heat resisting material :1nd pressing a severing element against the rubber and in Contact with an edge of the pat-tern while maintaining said severing element at a temperature sufiicient to melt the rubber.
In testimony whereof, I affix my signature. v
RICHARD T. GRIFFITHS.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US49781A US1584371A (en) | 1925-08-12 | 1925-08-12 | Method of severing rubber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US49781A US1584371A (en) | 1925-08-12 | 1925-08-12 | Method of severing rubber |
Publications (1)
Publication Number | Publication Date |
---|---|
US1584371A true US1584371A (en) | 1926-05-11 |
Family
ID=21961699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US49781A Expired - Lifetime US1584371A (en) | 1925-08-12 | 1925-08-12 | Method of severing rubber |
Country Status (1)
Country | Link |
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US (1) | US1584371A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2484619A (en) * | 1945-12-14 | 1949-10-11 | Wingfoot Corp | Slitting apparatus |
US3228262A (en) * | 1963-12-10 | 1966-01-11 | Minnie Punch And Die Corp | Method of making a die set |
US3236128A (en) * | 1963-04-15 | 1966-02-22 | American Mach & Foundry | Superposed conveyors with rack and pinion driven reciprocating cutter |
US3280499A (en) * | 1963-10-28 | 1966-10-25 | Charles E Studen | Expanded plastic board having apertures retaining punched pieces |
US4485295A (en) * | 1982-08-09 | 1984-11-27 | Tara Gmbh | Electrically heated for cutting foam plastic material |
US4539467A (en) * | 1982-04-26 | 1985-09-03 | Zangl Gmbh | Electrically heated cutting tool |
US20100237058A1 (en) * | 2009-03-18 | 2010-09-23 | Mark Stephen Evans | Removable chisel blade for a portable heating element |
-
1925
- 1925-08-12 US US49781A patent/US1584371A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2484619A (en) * | 1945-12-14 | 1949-10-11 | Wingfoot Corp | Slitting apparatus |
US3236128A (en) * | 1963-04-15 | 1966-02-22 | American Mach & Foundry | Superposed conveyors with rack and pinion driven reciprocating cutter |
US3280499A (en) * | 1963-10-28 | 1966-10-25 | Charles E Studen | Expanded plastic board having apertures retaining punched pieces |
US3228262A (en) * | 1963-12-10 | 1966-01-11 | Minnie Punch And Die Corp | Method of making a die set |
US4539467A (en) * | 1982-04-26 | 1985-09-03 | Zangl Gmbh | Electrically heated cutting tool |
US4485295A (en) * | 1982-08-09 | 1984-11-27 | Tara Gmbh | Electrically heated for cutting foam plastic material |
US20100237058A1 (en) * | 2009-03-18 | 2010-09-23 | Mark Stephen Evans | Removable chisel blade for a portable heating element |
US8314366B2 (en) | 2009-03-18 | 2012-11-20 | Mark Stephen Evans | Removable chisel blade for a portable heating element |
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