US1348615A - Method of manufacturing gromets - Google Patents

Method of manufacturing gromets Download PDF

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Publication number
US1348615A
US1348615A US300568A US30056819A US1348615A US 1348615 A US1348615 A US 1348615A US 300568 A US300568 A US 300568A US 30056819 A US30056819 A US 30056819A US 1348615 A US1348615 A US 1348615A
Authority
US
United States
Prior art keywords
convolutions
strand
gromets
mandrel
gromet
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
Application number
US300568A
Other languages
English (en)
Inventor
William A Young
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US300568A priority Critical patent/US1348615A/en
Priority to FR510765A priority patent/FR510765A/fr
Application granted granted Critical
Publication of US1348615A publication Critical patent/US1348615A/en
Priority to GB28891/20A priority patent/GB177825A/en
Priority to US418044A priority patent/US1432767A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
    • F16B43/001—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts for sealing or insulation

Definitions

  • Figure 1 is a side view of a gromet, constructed and arranged in accordance with the present invention.
  • Fig. '2 is a view showing in perspective a gromet forming mandrel and a strand of cord disposed as at the end of the initial step of the method herein described.
  • Fig. 3 is a perspective view showing the same after the initiation of the second step of the model.
  • Fig. 4L is a cross section taken as on the line 4- 1 in Fig. 1.
  • gromets when constructed in accordance with the present disclosed method are shaped on mandrels of various diameters.
  • the inandrels consist preferably of a core 9 and an abrasive covering 10.
  • the covering 10 is emery cloth and the mandrel 9 is a rod of any suitable length.
  • the gromet is started by wrapping the pliable strand 11 around the mandrel outside the covering 10 to form the convolutions 12. As many convolutions are used as may be found necessary to give the gromet the desired body or thickness in cross section.
  • the convolutions 12 When the niunber of convolutions 12, required to form the body of the gromet, have been turned on the mandrel, the convolutions are rolled in the mandrel 9 and covering 10 thereof preferably, or the mandrel may be forced in the direction shown by the arrow at the left of Fig. 3 of the drawings. The result of this is that the convolutions are massed and rolled over the stretched section of the pliable strand 11, which as shown in Fig. 3 of the drawings, is held substantially parallel to the mandrel. As the convolutions 12 are rolled, care is exercised to guide the pliable strand 11 so that a second series of convolutions indicated by the numeral 13 is wrapped around the first convolutions 12.
  • the convolutions 13 encompass the complete body of the gromet formed by the convolutions 12, or in other words, when the convolutions 13 meet and form a solid c0vering for the convolutions 12, the pliable strand 11 is severed from the source of supply and is folded down or caught between the side of the convolution 13 initially formed and the convolution last formed. The expansion of the convolution 13 is sufficient to retain the free end of the pliable strand 11 until the completed gromet is dipped in the waterproofing material with which it is saturated ready for service.
  • the gromets of this character are used as waterproofing gaskets and usually in submarine work where they are placed around the threaded extension of the bolt to rest between the body, the metal of the structure and a metal washer which is placed under the nut which is to be turned down on the body of the structure.
  • the washer with which the said nut is in contact has compressed the gromet to a thin disk, but one which has accommodated itself to all of the irregularties of the metal surface of the structure against which it rests.
  • a method of constructing gromets consisting in winding a strand upon a mandrel in parallel convolutions; then rolling said convolutions lengthwise of said mandrel for winding a continuation of said strand around said convolutions and transverse the same until said convolutions are covered.
  • a method of constructing gromets consisting in forming a body ring by winding a strand about a mandrel to form a plurality of convolutions of said strand; then rolling said body ring lengthwise of said mandrel for winding a continuation of said strand in coils about said convolutions until the same are covered.
  • a method of constructing gromets consisting in forming a body ring by winding a strand about a mandrel to form a plurality of convolutions of said strand; then rolling sisting in winding a strand upon a form in said body ring lengthwise of said mandrel parallel convolutions, to form a ring; then 10 for winding a continuation of said strand rolling said ring about its annular axis for in coils about said convolutions until the wrapping a continuation of said strand same are covered; then inserting the free about said convolutions and transverse the end of said strand between two of the last same to completely cover said convolutions mentioned convolutions. and form the outer surface of said ring. 4.
  • a method of constructing gromets con- WILLIAM A. YOUNG.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Ropes Or Cables (AREA)
  • Basic Packing Technique (AREA)
US300568A 1919-05-29 1919-05-29 Method of manufacturing gromets Expired - Lifetime US1348615A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US300568A US1348615A (en) 1919-05-29 1919-05-29 Method of manufacturing gromets
FR510765A FR510765A (fr) 1919-05-29 1920-02-26 Procédé de fabrication de rondelles d'étanchéité
GB28891/20A GB177825A (en) 1919-05-29 1920-10-12 Machine for making grommets for joint making and for like purposes
US418044A US1432767A (en) 1919-05-29 1920-10-19 Machine for making grommets

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US300568A US1348615A (en) 1919-05-29 1919-05-29 Method of manufacturing gromets
FR510765T 1920-02-26
GB28891/20A GB177825A (en) 1919-05-29 1920-10-12 Machine for making grommets for joint making and for like purposes
US418044A US1432767A (en) 1919-05-29 1920-10-19 Machine for making grommets

Publications (1)

Publication Number Publication Date
US1348615A true US1348615A (en) 1920-08-03

Family

ID=40002977

Family Applications (2)

Application Number Title Priority Date Filing Date
US300568A Expired - Lifetime US1348615A (en) 1919-05-29 1919-05-29 Method of manufacturing gromets
US418044A Expired - Lifetime US1432767A (en) 1919-05-29 1920-10-19 Machine for making grommets

Family Applications After (1)

Application Number Title Priority Date Filing Date
US418044A Expired - Lifetime US1432767A (en) 1919-05-29 1920-10-19 Machine for making grommets

Country Status (3)

Country Link
US (2) US1348615A (fr)
FR (1) FR510765A (fr)
GB (1) GB177825A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422200A (en) * 1945-05-22 1947-06-17 William M Lee Machine for making grommets
US3212947A (en) * 1962-06-20 1965-10-19 Pirelli Method and apparatus for the manufacture of annular structures having a single elementary or composite continuous filiform element helically wound about an imaginary circular axis

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415209A (en) * 1945-07-30 1947-02-04 Hansen Juliane Grace Grommet spindle
DE19706981A1 (de) * 1997-02-21 1998-10-15 Gore W L & Ass Gmbh Dichtungselement für gepackte Kolonnen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422200A (en) * 1945-05-22 1947-06-17 William M Lee Machine for making grommets
US3212947A (en) * 1962-06-20 1965-10-19 Pirelli Method and apparatus for the manufacture of annular structures having a single elementary or composite continuous filiform element helically wound about an imaginary circular axis

Also Published As

Publication number Publication date
GB177825A (en) 1922-04-12
FR510765A (fr) 1920-12-10
US1432767A (en) 1922-10-24

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