US3833161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for intercepting and threading the leader of convoluted motion picture film or the like
Assignee: Robert Bosch Photokino GmbH
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Filing: 1973-02-07
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Granted: 1974-09-03
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Expires: 1993-02-07
Abstract
Abstract Apparatus for intercepting and threading the leader of convoluted motion picture film has a catcher with a tooth which can enter an aperture of the leader and thereupon moves toward two advancing wheels which serve to transport the leader toward a takeup reel. The catcher is provided with guide means in the form of a notch or recess and/or one or more platforms which straighten out a curved or knicked leader so that the tip of the leader is more likely to find its way into the nip of the advancing wheels. The recess or notch is provided in that edge face of the tooth on the catcher which faces the advancing wheels. The platforms flank the tooth and not only serve to guide the leader but also center the catcher when they engage the flanges of one of the advancing wheels.
Inventors
- 👤 F Krumbein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:34
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/66; G11B15/67; G03; G03B; G03B1/00; G03B1/56; G03B21/00; G03B21/14; G03B21/32; G03B21/321; G03B21/326; G03D; G03D13/00; G03D13/003
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
179 words
Apparatus for intercepting and threading the apertured leader of strip-shaped material, such as motion picture film, comprising a support for a supply of convoluted strip-shaped material; advancing means spaced apart from said support and defining a passage for the leader of the supply of convoluted material on said support; a catcher movable along a predetermined path extending between the supply on said support and said passage, said catcher having a projection having an edge face facing said advancing means and arranged to enter the aperture of the leader of the supply on said support and guide means provided in the region of said projection and including a recess provided in said edge face to receive and retain a portion of the leader during movement of said projection away from the supply of convoluted material on said support so as to orient the leader whose aperture receives said projection so that the leader enters said passage on movement of said catcher along said path from the supply on said support toward said advancing means; and means for moving said catcher.
Claim 2
Dependent Claim
179 words
Apparatus for intercepting and threading the apertured leader of strip-shaped material, such as motion picture film, comprising a support for a supply of convoluted strip-shaped material; advancing means spaced apart from said support and defining a passage for the leader of the supply of convoluted material on said support; a catcher movable along a predetermined path extending between the supply on said support and said passage, said catcher having a projection having an edge face facing said advancing means and arranged to enter the aperture of the leader of the supply on said support and guide means provided in the region of said projection and including a recess provided in said edge face to receive and retain a portion of the leader during movement of said projection away from the supply of convoluted material on said support so as to orient the leader whose aperture receives said projection so that the leader enters said passage on movement of said catcher along said path from the supply on said support toward said advancing means; and means for moving said catcher.
Claim 3
Dependent Claim
170 words
Apparatus for intercepting and threading the apertured leader of strip-shaped material, such as motion picture film, comprising a support for a supply of convoluted strip-shaped material; advancing means spaced apart from said support and defining a passage for the leader of the supply of convoluted material on said support; a catcher movable along a predetermined path extending between the supply on said support and said passage, said catcher having a projection arranged to enter the aperture of the leader of the supply on said support and guide means provided in the region of said projection and comprising a pair of guide surfaces flanking said projection and normally abutting against one side of the leader during movement of said projection away from the supply on said support, said guide means serving to orient the leader whose aperture receives said projection so that the leader enters said passage on movement of said catcher along said path from the supply on said support toward said advancing means; and means for moving said catcher.
Claim 4
Dependent Claim
170 words
Apparatus for intercepting and threading the apertured leader of strip-shaped material, such as motion picture film, comprising a support for a supply of convoluted strip-shaped material; advancing means spaced apart from said support and defining a passage for the leader of the supply of convoluted material on said support; a catcher movable along a predetermined path extending between the supply on said support and said passage, said catcher having a projection arranged to enter the aperture of the leader of the supply on said support and guide means provided in the region of said projection and comprising a pair of guide surfaces flanking said projection and normally abutting against one side of the leader during movement of said projection away from the supply on said support, said guide means serving to orient the leader whose aperture receives said projection so that the leader enters said passage on movement of said catcher along said path from the supply on said support toward said advancing means; and means for moving said catcher.
Claim 5
Dependent Claim
75 words
Apparatus as defined in claim 2, wherein said catcher comprises two platforms flanking said projection and provided with said guide surfaces, said advancing means comprising a wheel having two axially spaced flanges and said platforms being arranged to move between said flanges in response to movement of said projection away from the supply on said support so that the leader whose aperture receives said projection is centered between said flanges on entry into said passage.
Claim 6
Dependent Claim
30 words
Apparatus as defined in claim 2, wherein said projection comprises an edge face facing said passage and said guide surfaces are located between said edge face and said advancing means.
Claim 7
Dependent Claim
27 words
Apparatus as defined in claim 2, wherein said projection comprises an edge face facing said passage and said located between said guide surfaces and said advancing means.
Claim 8
Dependent Claim
65 words
Apparatus as defined in claim 2, wherein said projection comprises an edge face facing said passage and each of said guide surfaces includes a first portion and a second portion, said first portions of said guide surfaces being located between said edge face and said advancing means and said edge face being located between said advancing means and said second portions of said guide surfaces.
Claim 9
Dependent Claim
22 words
Apparatus as defined in claim 6, wherein said first and second portions of each of said guide surfaces make an obtuse angle.
Claim 10
Dependent Claim
34 words
Apparatus as defined in cLaim 2, wherein said projection has an edge face facing said advancing means and a notch into which the leader extends while the aperture of the leader receives said projection.
Claim 11
Dependent Claim
49 words
Apparatus as defined in claim 2 for intercepting and threading the leader of strip-shaped material having a predetermined width, wherein the thickness of said catcher, as considered at right angles to the direction of movement of said catcher along said path, is a small fraction of said predetermined width.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |