US3777960A — Apparatus for transporting and intermittently bra…

Claim 1

Independent Claim 197 words

Apparatus for manipulating webs of sheet material, particularly webs having photosensitive layers, comprising a transporting device including a driven rotary element arranged to engage one side of a web, an idler roller located opposite said driven element and movable to and from an operative position of engagement with the other side of the web which is engaged by said rotary element to thereby effect a positive lengthwise displacement of the web while dwelling in said operative position, means for biasing said idler roller to said operative position with a force which increases with progressing movement of said idler roller from said operative position, and stop means for limiting the extent of movement of said idler roller from said operative position; and a braking device including a braking element located at said one side of the web and displacing means actuatable to perform a predetermined working stroke and to thereby move said braking element into braking engagement with the web and to substantially simultaneously move said idler roller from said operative position against the opposition of said biasing means, said stop means being positioned to arrest said idler roller shortly before said displacing means completes said working stroke.

Claim 2

Dependent Claim 197 words

Apparatus for manipulating webs of sheet material, particularly webs having photosensitive layers, comprising a transporting device including a driven rotary element arranged to engage one side of a web, an idler roller located opposite said driven element and movable to and from an operative position of engagement with the other side of the web which is engaged by said rotary element to thereby effect a positive lengthwise displacement of the web while dwelling in said operative position, means for biasing said idler roller to said operative position with a force which increases with progressing movement of said idler roller from said operative position, and stop means for limiting the extent of movement of said idler roller from said operative position; and a braking device including a braking element located at said one side of the web and displacing means actuatable to perform a predetermined working stroke and to thereby move said braking element into braking engagement with the web and to substantially simultaneously move said idler roller from said operative position against the opposition of said biasing means, said stop means being positioned to arrest said idler roller shortly before said displacing means completes said working stroke.

Claim 3

Dependent Claim 204 words

Apparatus for manipulating webs of sheet material, particularly photographic film, comprising a transporting device including a driven roller having a peripheral layer consisting of a material having a high coefficient of friction and arranged to engage one side of a web, said driven roller comprising a pair of axially spaced coaxial portions, drive means having a shaft supportingly connected with and arranged to transmit torque to said portions of said driven roller, and an idler roller located opposite said driven roller and movable to and from an operative position of engagement with the other side of the web which is engaged by said driven roller to positively advance the web lengthwise while dwelling in said operative position; and a braking device including a braking element located at said one side of the web and displacing means actuatable to move said braking element into braking engagement with the web and to simultaneously move said idler roller from said operative position, said displacing means comprising a forked carrier straddling said shaft between said portions of said driven roller and means for moving said carrier from a first to a second position whereby said carrier causes said braking element to engage said one side of the web.

Claim 4

Dependent Claim 204 words

Apparatus for manipulating webs of sheet material, particularly photographic film, comprising a transporting device including a driven roller having a peripheral layer consisting of a material having a high coefficient of friction and arranged to engage one side of a web, said driven roller comprising a pair of axially spaced coaxial portions, drive means having a shaft supportingly connected with and arranged to transmit torque to said portions of said driven roller, and an idler roller located opposite said driven roller and movable to and from an operative position of engagement with the other side of the web which is engaged by said driven roller to positively advance the web lengthwise while dwelling in said operative position; and a braking device including a braking element located at said one side of the web and displacing means actuatable to move said braking element into braking engagement with the web and to simultaneously move said idler roller from said operative position, said displacing means comprising a forked carrier straddling said shaft between said portions of said driven roller and means for moving said carrier from a first to a second position whereby said carrier causes said braking element to engage said one side of the web.

Claim 5

Dependent Claim 35 words

Apparatus as defined in claim 2, wherein said means for reciprocating said carrier comprises a rotary electromagnet, a crank arm rotatable by said electromagnet, and a pin-and-slot connection between said crank arm and said carrier.

Claim 6

Dependent Claim 84 words

Apparatus as defined in claim 3, wherein said electromagnet is energizable to rotate in a first direction and to thereby move said braking element into engagement with said one side of the web by way of said carrier and said crank arm, and wherein said electromagnet normally tends to rotate in a second direction to retract said braking element from said one side of the web, and further comprising means for limiting the extent of rotary movement of said electromagnet in said second direction.

Claim 7

Dependent Claim 210 words

Apparatus for manipulating webs of sheet material, particularly photographic film, comprising a transporting device including a driven roller arranged to engage one side of a web and an idler roller located opposite said driven roller and movable to and from an operative position of engagement with the other side of the web which is engaged by said driven roller to positively advance the web lengthwise while dwelling in said operative position; and a braking device including a braking element located at said one side of the web, said braking element being of substantially cylindrical shape and having an axis which is substantially parallel to the peripheral surface of said driven roller, and displacing means actuatable to move said braking element into braking engagement with the web and to simultaneously move said idler roller from said operative position, said displacing means comprising resilient supporting means for said braking element and means for deforming said supporting means to thereby move said braking element against said one side of the web, said resilient supporting means comprising at least one leaf spring which is deformable to permit the peripheral surface of said braking element to move into linear contact with said one side of the web in response to actuation of said displacing means.

Claim 8

Dependent Claim 210 words

Apparatus for manipulating webs of sheet material, particularly photographic film, comprising a transporting device including a driven roller arranged to engage one side of a web and an idler roller located opposite said driven roller and movable to and from an operative position of engagement with the other side of the web which is engaged by said driven roller to positively advance the web lengthwise while dwelling in said operative position; and a braking device including a braking element located at said one side of the web, said braking element being of substantially cylindrical shape and having an axis which is substantially parallel to the peripheral surface of said driven roller, and displacing means actuatable to move said braking element into braking engagement with the web and to simultaneously move said idler roller from said operative position, said displacing means comprising resilient supporting means for said braking element and means for deforming said supporting means to thereby move said braking element against said one side of the web, said resilient supporting means comprising at least one leaf spring which is deformable to permit the peripheral surface of said braking element to move into linear contact with said one side of the web in response to actuation of said displacing means.

Claim 9

Dependent Claim 211 words

Apparatus for manipulating webs of sheet material, particularly photographic film, comprising a transporting device including a driven roller arranged to engage one side of a web and an idler roller located opposite said driven roller And movable to and from an operative position of engagement with the other side of the web which is engaged by said driven roller to positively advance the web lengthwise while dwelling in said operative position; and a braking device including a braking element located at said one side of the web, said braking element being of substantially cylindrical shape and having an axis which is substantially parallel to the peripheral surface of said driven roller, and displacing means actuatable to move said braking element into braking engagement with the web and to simultaneously move said idler roller from said operative position, said displacing means comprising resilient supporting means for said braking element and means for deforming said supporting means to thereby move said braking element against said one side of the web, said means for deforming said supporting means comprising a forked carrier provided with a bridge and motion transmitting means arranged to move into mere point contact with said supporting means to thereby move said braking element against said one side of the web.

Claim 10

Dependent Claim 211 words

Apparatus for manipulating webs of sheet material, particularly photographic film, comprising a transporting device including a driven roller arranged to engage one side of a web and an idler roller located opposite said driven roller And movable to and from an operative position of engagement with the other side of the web which is engaged by said driven roller to positively advance the web lengthwise while dwelling in said operative position; and a braking device including a braking element located at said one side of the web, said braking element being of substantially cylindrical shape and having an axis which is substantially parallel to the peripheral surface of said driven roller, and displacing means actuatable to move said braking element into braking engagement with the web and to simultaneously move said idler roller from said operative position, said displacing means comprising resilient supporting means for said braking element and means for deforming said supporting means to thereby move said braking element against said one side of the web, said means for deforming said supporting means comprising a forked carrier provided with a bridge and motion transmitting means arranged to move into mere point contact with said supporting means to thereby move said braking element against said one side of the web.

Claim 11

Dependent Claim 73 words

Apparatus as defined in claim 6, wherein said driven roller comprises two coaxial portions which flank said carrier and wherein said supporting means comprises at least one leaf spring, a socket provided on said leaf spring for said braking element, and follower means engaged by said motion transmitting means and arranged to move said socket and said braking element toward said one side of the web in response to displacement of said carrier.

Claim 12

Dependent Claim 58 words

Apparatus as defined in claim 7, wherein the line of contact between said peripheral surface of said braking element and said one side of the web in actuated condition of said displacing means is coplanar with the axis of said driven roller, at least when said idler roller is moved by said braking element from said operative position.

Claim 13

Dependent Claim 155 words

Apparatus for manipulating webs of sheet material, particularly webs having photosensitive layers, comprising a transporting device including a driven rotary element arranged to engage one side of a web and an idler roller located opposite said driven element and movable to and from an operative position of engagement with the other side of the web which is engaged by said driven element to thereby effect a positive lengthwise displacement of the web along a predetermined path while dwelling in said operative position; and a braking device including a braking element located at said one side of the web and displacing means actuatable to move said braking element into braking engagement with the web and to substantially simultaneously move said idler roller from said operative position, one of said elements having two spaced-apart portions as considered transversely of said path and the other of said elements being located between said spaced-apart portions of said one element.

Claim 14

Dependent Claim 155 words

Apparatus for manipulating webs of sheet material, particularly webs having photosensitive layers, comprising a transporting device including a driven rotary element arranged to engage one side of a web and an idler roller located opposite said driven element and movable to and from an operative position of engagement with the other side of the web which is engaged by said driven element to thereby effect a positive lengthwise displacement of the web along a predetermined path while dwelling in said operative position; and a braking device including a braking element located at said one side of the web and displacing means actuatable to move said braking element into braking engagement with the web and to substantially simultaneously move said idler roller from said operative position, one of said elements having two spaced-apart portions as considered transversely of said path and the other of said elements being located between said spaced-apart portions of said one element.

Claim 15

Dependent Claim 18 words

Apparatus as defined in claim 9, further comprising means for biasing said idler roller to said operative position.

Claim 16

Dependent Claim 36 words

Apparatus as defined in claim 10, further comprising scanning means arranged to scan the web for the presence of longitudinally spaced indicia thereon and to actuate said displacing means in response to detection of such indicia.

Claim 17

Dependent Claim 38 words

Apparatus as defined in claim 11, further comprising a severing device adjacent to the path of movement of the web downstream of said rollers and arranged to sever the web during each interval between successive lengthwise movements thereof.

Claim 18

Dependent Claim 45 words

Apparatus as defined in claim 9, further comprising scanning means including metering means operative to generate impulses in response to detection of predetermined lengths of travelling web and means for actuating said displacing means in response to reception of a predetermined number of such impulses.

Claim 19

Dependent Claim 52 words

Apparatus as defined in claim 13, wherein said metering means comprises a wheel adjacent to the path of the web and arranged to rotate in response to lengthwise movement of the web and a photoelectric impulse Generating device arranged to produce impulses in response to predetermined successive angular displacements of said wheel.

Claim 20

Dependent Claim 123 words

Apparatus as defined in claim 14, wherein said photoelectric signal generating device comprises a disk driven by said wheel and having an annulus of holes, a light source positioned at one side of said disk and arranged to emit a beam of light against said disk so that such light passes through successive holes thereof, and a light sensitive element positioned at the other side of the disk in registry with said light source to produce an impulse in response to impingement of the light beam thereagainst when such light beam passes through one of said holes, said means for actuating being arranged to actuate said displacing means in response to reception of a predetermined number of impulses from said light sensitive element.

Claim 21

Dependent Claim 24 words

Apparatus as defined in claim 9, wherein said driven roller has a peripheral layer consisting of a material having a high coefficient of friction.

Claim 22

Dependent Claim 22 words

Apparatus as defined in claim 9, wherein said braking element consists of a synthetic plastic material having a high coefficient of friction.

Claim 23

Dependent Claim 20 words

Apparatus as defined in claim 9, further comprising manually operated means for moving said idler roller from said operative position.

Claim 24

Dependent Claim 27 words

Apparatus as defined in claim 18, wherein said idler roller is pivotable to and from said operative position and said manually operated means comprises a rotary eccentric.

Claim 25

Dependent Claim 81 words

Apparatus as defined in claim 9, wherein said displacing means is actuatable to move said braking element into substantially linear braking engagement with the web which is engaged by said driven element and wherein the line of contact between said braking element and said one side of the web in actuated condition of said displacing means is coplanar with the axis of said driven element, at least when said idler roller is moved by said braking element from said operative position.

Claim 26

Dependent Claim 24 words

Apparatus as defined in claim 9, wherein the mass of said idler roller is a small fraction of the mass of said driven element.

Claim 27

Dependent Claim 24 words

Apparatus as defined in claim 9, wherein the mass of said braking element is a small fraction of the mass of said driven element.

Claim 28

Dependent Claim 77 words

Apparatus as defined in claim 9, wherein said transporting device further comprises means for biasing said idler roller to said operative position with a force which increases with progressing movement of said idler roller from said operative position, and adjustable stop means for limiting the extent of movement of said idler roller from said operative position, said displacing means being arranged to move said idler roller from said operative position against the opposition of said biasing means.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1976-12-10	1977-06-11	1977-12-11	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1980-12-10	1981-06-11	1981-12-11	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1984-12-10	1985-06-11	1985-12-11	$7700.00	Window Closed / Lapsed

Apparatus for transporting and intermittently braking webs of paper or the like

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