US3603529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable spindle arm for cartridge-loading motion picture projector
Assignee: Eastman Kodak Co
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Filing: 1968-11-20
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Granted: 1971-09-07
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Expires: 1988-11-20
Abstract
Abstract A motion picture projector provided with means for supporting film supply cartridges of different sizes with the rotational axes of their film supply reels at respective different predetermined positions includes a supply reel support spindle carried by an arm which is angularly adjustable about an axis parallel to the spindle to selectively position the spindle at different ones of such predetermined positions of the reel axis. Preferably, the spindle may be positioned at locations which do not necessarily lie on an arc of a circle thereby allowing for interchangeable cartridges containing reels whose axes do not define the arc of a circle in their respective positions on the projector.
Inventors
- 👤 John J Bundschuh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:35
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/321
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
250 words
In a motion picture projector adapted to project film wound on a supply reel rotatably contained with a cartridge, the combination comprising: a projector housing adapted to interchangeably support a selected one of a plurality of cartridges of different capacity on the projector, each of such cartridges rotatably containing a supply reel having an axis of rotation and corresponding in capacity to the capacity of the cartridge; means on the housing for locating each of such cartridges and the respective reel contained therein on the projector with the axis of rotation of the respective reel located relative to the projector at a position dependent on the size of the reel; a spindle for rotatably and interchangeably supporting reels on the projector and within the cartridge; means for driving said spindle, said driving means including (1) a drive member mounted on the housing for rotation about an axis and (2) means drivingly interconnecting said drive member and said spindle; an elongated pivot member movably mounted on the projector and supporting the spindle on the projector, said spindle being movable with said pivot member to any selected one of a plurality of positions corresponding to the position of any selected one of the reel axes, said pivot member being movable both angularly about and longitudinally relative to the axis of rotation of said drive member; and, means on the projector and the pivot member for guiding movement of the pivot member and spindle along a path defined by the respective reel axes.
Claim 2
Dependent Claim
250 words
In a motion picture projector adapted to project film wound on a supply reel rotatably contained with a cartridge, the combination comprising: a projector housing adapted to interchangeably support a selected one of a plurality of cartridges of different capacity on the projector, each of such cartridges rotatably containing a supply reel having an axis of rotation and corresponding in capacity to the capacity of the cartridge; means on the housing for locating each of such cartridges and the respective reel contained therein on the projector with the axis of rotation of the respective reel located relative to the projector at a position dependent on the size of the reel; a spindle for rotatably and interchangeably supporting reels on the projector and within the cartridge; means for driving said spindle, said driving means including (1) a drive member mounted on the housing for rotation about an axis and (2) means drivingly interconnecting said drive member and said spindle; an elongated pivot member movably mounted on the projector and supporting the spindle on the projector, said spindle being movable with said pivot member to any selected one of a plurality of positions corresponding to the position of any selected one of the reel axes, said pivot member being movable both angularly about and longitudinally relative to the axis of rotation of said drive member; and, means on the projector and the pivot member for guiding movement of the pivot member and spindle along a path defined by the respective reel axes.
Claim 3
Dependent Claim
188 words
A motion picture projector comprising: a housing; means on the housing adapted to locate cartridges of different sizes on the housing, the cartridges containing a roll of film corresponding in capacity to the size of the cartridge, each of the sizes of cartridges defining an axis about which the film roll in the respective cartridge is adapted to rotate wherein the axes of the different sizes of cartridges define a locus of points; a spindle for rotatably supporting the film roll on the projector and in the cartridge; means for driving said spindle, said driving means including (1) a drive member mounted on the housing for rotation about an axis and (2) means drivingly interconnecting said drive member and said spindle; an elongated member mounted on the housing for pivotal and longitudinal movement about the axis of rotation of said drive member, said elongated member including means for supporting said spindle for pivotal and longitudinal movement with said elongated member; and, means for guiding movement of the member such that the spindle moveable therewith will move along the locus of points defined by the axes of the cartridges.
Claim 4
Dependent Claim
188 words
A motion picture projector comprising: a housing; means on the housing adapted to locate cartridges of different sizes on the housing, the cartridges containing a roll of film corresponding in capacity to the size of the cartridge, each of the sizes of cartridges defining an axis about which the film roll in the respective cartridge is adapted to rotate wherein the axes of the different sizes of cartridges define a locus of points; a spindle for rotatably supporting the film roll on the projector and in the cartridge; means for driving said spindle, said driving means including (1) a drive member mounted on the housing for rotation about an axis and (2) means drivingly interconnecting said drive member and said spindle; an elongated member mounted on the housing for pivotal and longitudinal movement about the axis of rotation of said drive member, said elongated member including means for supporting said spindle for pivotal and longitudinal movement with said elongated member; and, means for guiding movement of the member such that the spindle moveable therewith will move along the locus of points defined by the axes of the cartridges.
Claim 5
Dependent Claim
254 words
A motion picture projector comprising: a housinG; means on the housing adapted to locate cartridges of different sizes on the housing, the cartridges containing a roll of film corresponding in capacity to the size of the cartridge, each of the sizes of cartridges defining an axis about which the film roll in the respective cartridge is adapted to rotate wherein the axes of the different sizes of cartridges define a locus of points; a spindle for rotatably supporting on the projector the film roll in a located cartridge; an elongated member mounted on the housing for pivotal movement about an axis; means on said member for supporting said spindle at a location spaced from said axis; means for guiding movement of said member such that the spindle moveable therewith will move along the locus of points defined by the axes of the cartridges; and, detent means for positioning and supporting said members such that said spindle is positively locatable and holdable in each of the points defined by the positions of the axes of different sizes of cartridges, said detent means including (1) at least one spaced recess on one of said housing or member, (2) a protrusion mounted on the other of said housing or member in alignment with said recess, and (3) means biasing said protrusion toward said one of said housing or member whereby engagement between said protrusion and said recess locates said spindle at one of the points defined by the positions of the axes of different sizes of cartridges.
Claim 6
Dependent Claim
254 words
A motion picture projector comprising: a housinG; means on the housing adapted to locate cartridges of different sizes on the housing, the cartridges containing a roll of film corresponding in capacity to the size of the cartridge, each of the sizes of cartridges defining an axis about which the film roll in the respective cartridge is adapted to rotate wherein the axes of the different sizes of cartridges define a locus of points; a spindle for rotatably supporting on the projector the film roll in a located cartridge; an elongated member mounted on the housing for pivotal movement about an axis; means on said member for supporting said spindle at a location spaced from said axis; means for guiding movement of said member such that the spindle moveable therewith will move along the locus of points defined by the axes of the cartridges; and, detent means for positioning and supporting said members such that said spindle is positively locatable and holdable in each of the points defined by the positions of the axes of different sizes of cartridges, said detent means including (1) at least one spaced recess on one of said housing or member, (2) a protrusion mounted on the other of said housing or member in alignment with said recess, and (3) means biasing said protrusion toward said one of said housing or member whereby engagement between said protrusion and said recess locates said spindle at one of the points defined by the positions of the axes of different sizes of cartridges.
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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |