US2297270A - Connecting film ends - Google Patents

Connecting film ends Download PDF

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Publication number
US2297270A
US2297270A US268646A US26864639A US2297270A US 2297270 A US2297270 A US 2297270A US 268646 A US268646 A US 268646A US 26864639 A US26864639 A US 26864639A US 2297270 A US2297270 A US 2297270A
Authority
US
United States
Prior art keywords
film
solvent
jaws
air
housing
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
US268646A
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English (en)
Inventor
Westerkamp Hugo
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
Application granted granted Critical
Publication of US2297270A publication Critical patent/US2297270A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D15/00—Apparatus for treating processed material
    • G03D15/04—Cutting; Splicing
    • G03D15/043—Cutting or splicing of filmstrips

Definitions

  • the invention relates to an arrangement for connecting under pressure two film ends coated with a solvent, the connecting of two film ends including in particular a sticking together of two film ends which is eflected by applying to the adjacent surfaces of two film ends laid one upon the other a solvent which "dissolves the film material, while the film ends. are placed under pressure, it necessary with the application of heat, until the double film thickness has been reduced to the thickness. of. a single-film by compression, while the surplus dissolved film material flows away:
  • the object of the invention is arrangement by the use of which the film-ends are connected durably in a manner which is satisfactory in all respects, and which ensures in particular that the film also remains quite flat at the connecting point.
  • this is achieved with an arrangement for, pressingthe film ends toto; provide an I gether during the connectionthereof;
  • This-arrangement comprises .twoclamping jaws which are pervious to' air .and exertlthe connecting pressure, andis based upon the fact that the film ends are connected together-in a really satisfactory and durable manner andth'e filrmalso but only if the'solvent has sufllcient opportunity the application of the pressing to escape during force.
  • the clamping jaws are surrounded, according to the invention, by a chamber provided with an arrangement for" regulating the degree of. th absorption'orthe solventbythe air, it being possible to efiectthis regulation in a known manner.
  • the drawing illustrates diagrammatically a construction of. an arrangement according to the invention, by way of example.
  • the two film' ends to be connected together are designated by- I and 2.. They are coated with a solvent and are either laid directly one upon the other as shown and so pressed together that the surplus material flows away, or they may, for example, b oppositely bevelled at their-edges whichare connected and joined together by pressure.
  • the pressing force is exerted by two clamping jaws 3, 4, the direction of pressure being indi cate'd by arrows, in thedrawing.
  • The. clamping laws are so fashioned that they assist the escape of the film solvent from the film connectingpoint and the evaporation and withdrawal of the sol-'- vent.
  • the, clamping jaws which are'planeground on theirclamping surface, are made pervious-to air, the clampingiaws preferablyIbeing-jtraversed by a plurality of fine channelswhichiorm, a communication between the escape of the solvent.
  • thisisbest achieved it the clamping laws are traversed-by a plurality of finechannels form ing communication between the clamping surface and the outer surface of the clampingia'ws; in
  • clamping jaws consisting of a material of spo y structure. Bothamaterial traversed by fine channels and a ma-- terial have, when ground plane, a large-effective pressure suriace having many air channels through which the solventescapes without too.
  • the clamping jaws are surroundedby a cas ing 5 in which the degree ofabsorption of the solventby the air, is regulated.
  • This regulation example, the absorption, of the solvent by the" i, air is, a functionoithemoisture of the air, fresh content of the said air-being regulable by means of drying dishes I.
  • the surplus air may escape at 0.
  • the absorption or the solvent by the air may also be regulated in very many other ways, tor example by directly feeding solvent to, or extracting solvent from, the air in the chamher.
  • Device for connecting the ends of lengths of film comprising a housing and two compression jaws located in the housing and between which the ends oi! the film lengths may be inserted in overlapped condition with a film solvent therebetween and by which Jaws the overlapping portions may be compressed to the thickness of a single film and from between which the excess material may escape, said jaws having smooth.
  • Device for connecting the ends of lengths of film comprising a housing and two compression jaws located in the housing and between which the ends 01' the film lengths may be inserted in overlapped condition with a film solvent therebetween and by which jaws the overlapping portions may be compressed to the thickness of a single film and from between which the excess material may escape, said jaws having smooth, rigid and substantially plane surfaces for compressing engagement with the film lengths and having a porous structure throughout the area of overlapping formed by a multiplicity of closely spaced fine channels through which evaporated solvent may be gradually withdrawn directly from the contacted surface and discharged through the structure to the interior of the housing, said housing having openings in alignment with the Jaw surfaces and through which the ends of the film lengths may be introduced into the space between the jaws, means for delivering vapor to the atmosphere within the housing whereby to regulate the rate of withdrawal of solvent through the jaws, and means for passing air through the housing.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Moulding By Coating Moulds (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
US268646A 1938-05-06 1939-04-18 Connecting film ends Expired - Lifetime US2297270A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE209364X 1938-05-06

Publications (1)

Publication Number Publication Date
US2297270A true US2297270A (en) 1942-09-29

Family

ID=5794730

Family Applications (1)

Application Number Title Priority Date Filing Date
US268646A Expired - Lifetime US2297270A (en) 1938-05-06 1939-04-18 Connecting film ends

Country Status (5)

Country Link
US (1) US2297270A (en))
CH (1) CH209364A (en))
FR (1) FR853091A (en))
GB (1) GB527557A (en))
NL (1) NL50576C (en))

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478057A (en) * 1944-11-21 1949-08-02 United Shoe Machinery Corp Machine for inserting and fastening in shoe uppers individual thermoplastic lacing elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478057A (en) * 1944-11-21 1949-08-02 United Shoe Machinery Corp Machine for inserting and fastening in shoe uppers individual thermoplastic lacing elements

Also Published As

Publication number Publication date
CH209364A (de) 1940-04-15
NL50576C (en))
GB527557A (en) 1940-10-11
FR853091A (fr) 1940-03-09

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