US3820122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phototypesetting machine
Assignee: R F BELTER Corp A OH CORP
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Filing: 1971-08-16
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Granted: 1974-06-25
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Expires: 1991-08-16
Abstract
Abstract The invention disclosed is a machine for projecting letters and other characters onto a strip of photographic material to form headlines and the like. The machine includes a disc having a number of concentric rings or fonts of characters which is spun at a constant high speed, a strobe light mounted on the opposite side of the disc from the paper and energized by a control circuit to project a desired character onto the paper, and a lens system for focusing the projected image. The disc and strobe assembly are slidable toward and away from the paper to vary the size of the image projected and, through a cam, move the lens to maintain proper focusing. A novel mounting arrangement maintains the optical center of the lens on the line from a reference point on the paper to a reference point on the letter to be projected so that a uniform horizontal reference line and uniform letter spacing are maintained regardless of the size of the letters projected. Vertical shifting of the font disc relative to the strobe light and the lens selects the particular font of characters to be projected. A paper drive system is incorporated to advance the paper a distance proportional to the size of the letter projected.
Inventors
- 👤 H Hosterman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:57
CPC Classifications
B; B41; B41B; B41B17/00; B41B17/04; B41B17/10; B41B21/00; B41B21/16; B41B21/18; B41B21/32; B41B21/34; B41B27/00
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
139 words
A phototypesetting machine, comprising: a base; a supply of photographic paper supported by said base and including means to hold a portion of the paper in a vertical plane; a first carriage slidably mounted on said base for linear movement normal to said vertical plane; means to effect said linear movement of said carriage; image projecting means mounted on said carriage to project the image of a character toward said vertical plane; a lens for focusing the projected image on said vertical plane; and a lever assembly attached to said first carriage and to said lens to adjust the lens laterally and longitudinally relative to said plane while maintaining the center of said lens on a straight optical axis through a reference point in said vertical plane and a corresponding reference point on the source of the projected image.
Claim 2
Dependent Claim
139 words
A phototypesetting machine, comprising: a base; a supply of photographic paper supported by said base and including means to hold a portion of the paper in a vertical plane; a first carriage slidably mounted on said base for linear movement normal to said vertical plane; means to effect said linear movement of said carriage; image projecting means mounted on said carriage to project the image of a character toward said vertical plane; a lens for focusing the projected image on said vertical plane; and a lever assembly attached to said first carriage and to said lens to adjust the lens laterally and longitudinally relative to said plane while maintaining the center of said lens on a straight optical axis through a reference point in said vertical plane and a corresponding reference point on the source of the projected image.
Claim 3
Dependent Claim
76 words
The phototypesetting machine according to claim 1 wherein said lever assembly comprises a rod attached to said first carriage by a connection allowing pivotal and sliding movement of said rod, attached to said lens by a connection permitting pivotal and sliding movement of said rod, and pivotally supported at its forward end by a support maintaining the center of said rod in said vertical plane at a fixed distance from said reference point of said plane.
Claim 4
Dependent Claim
34 words
The phototypesetting machine according to claim 1 further including means responsive to the position of the carriage for maintaining the lens at the point necessary to focus the projected image on the vertical plane.
Claim 5
Dependent Claim
58 words
The phototypesetting machine according to claim 3 wherein the last mentioned means includes a second carriage slidaBly mounted for movement between the vertical plane and the projecting means, and lens being carried by the second carriage, and a cam connected to the second carriage and having first and second surfaces engaging the first carriage and the base, respectively.
Claim 6
Dependent Claim
20 words
The phototypesetting machine according to claim 1 further including means to advance the photographic paper to receive successive projected images.
Claim 7
Dependent Claim
30 words
The phototypesetting machine according to claim 5 wherein the means to advance includes means to vary the amount of paper advanced in proportion to the size of the projected image.
Claim 8
Dependent Claim
117 words
The phototypesetting machine according to claim 6 which includes an oscillator, an arithmetic register, a gate for supplying a train of pulses from the oscillator to the register, means for controlling the gate to vary the length of the pulse train in accordance with the width of the projected image, pulse generating means responsive to paper movement for generating a second pulse train whose length is directly proportional to the amount of paper advanced, the second pulse being supplied to the register for subtraction from the pulse train stored in the register, the means to advance the paper being responsive to the contents of the register to advance paper only when the contents are greater than zero.
Claim 9
Dependent Claim
35 words
The phototypesetting machine according to claim 7 further including means for varying the frequency of the oscillator, said means being response to the positions of the lens and font disc relative to the photographic paper.
Claim 10
Dependent Claim
155 words
A phototypesetting machine, comprising: a base; a frame mounted on said base for holding a sheet of photographic paper in a vertical plane; a carriage slidably mounted on said base for movement normal to the vertical plane; a disc having at least one ring of negative images of characters, said disc being supported on the carriage in a plane parallel to the vertical plane of the photographic paper; a motor for rotating said disc; a strobe light to project one of the characters of the disc onto the photographic paper; control means for the strobe light; a lens between the disc and the paper for focusing the projected image; and means to adjust the lens laterally and longitudinally relative to the photographic paper while maintaining the optical center of the lens on a straight line extending from a reference point in the vertical plane to a corresponding reference point on the character on the disc.
Claim 11
Dependent Claim
155 words
A phototypesetting machine, comprising: a base; a frame mounted on said base for holding a sheet of photographic paper in a vertical plane; a carriage slidably mounted on said base for movement normal to the vertical plane; a disc having at least one ring of negative images of characters, said disc being supported on the carriage in a plane parallel to the vertical plane of the photographic paper; a motor for rotating said disc; a strobe light to project one of the characters of the disc onto the photographic paper; control means for the strobe light; a lens between the disc and the paper for focusing the projected image; and means to adjust the lens laterally and longitudinally relative to the photographic paper while maintaining the optical center of the lens on a straight line extending from a reference point in the vertical plane to a corresponding reference point on the character on the disc.
Claim 12
Dependent Claim
49 words
The phototypesetting machine according to claim 9 further including a second carriage supporting the lens and slidably mounted on the base for movement normal to the vertical plane and cam means for maintaining the lens at the point at which the projected image is focused on the vertical plane.
Claim 13
Dependent Claim
127 words
The phototypesetting machine according to claim 10 wherein the cam means comprises a cam having two straight cam surfaces extending at right angles to one another, a first roller attached to the base with its axis of rotation in the vertical plane, the first roller contacting one cam surface, and a second roller attached to the first carriage with the axis of rotation of the second roller being parallel to that of the first roller and intersecting a line extending normal to the vertical plane and the axis of rotation of the first roller, the second roller contacting the other cam surface, the cam being pivotally connected to the second carriage by a pivotal connection located on the bisector of the 90* angle between the cam surfaces.
Claim 14
Dependent Claim
106 words
The phototypesetting machine according to claim 10 wherein the means for maintaining the optical center of the lines on the line between the two reference points comprises a parallelogram linkage connecting the lens to the second carriage and permitting movement of the lens relative to the second carriage in a plane parallel to the vertical plane, and a rod pivotally connected to the base at a point in the vertical plane, pivotally and slidably cOnnected to the first carriage at a point fixed relative to the reference point on the character on the disc, and pivotally and slidably connected to one link of the parallelogram linkage.
Claim 15
Dependent Claim
54 words
The phototypesetting machine according to claim 9 wherein the disc has a plurality of concentric rings of images and wherein means are provided for shifting the position of the disc relative to the strobe light and the lens to any of a plurality of positions, one position being provided for each ring of images.
Claim 16
Dependent Claim
44 words
The phototypesetting machine according to claim 13 wherein the disc and the motor rotating the disc are carried by a subframe mounted for vertical movement on the carriage, the means for shifting the position of the disc comprising means to move the subframe vertically.
Claim 17
Dependent Claim
91 words
The phototypesetting machine according to claim 14 wherein the last mentioned means comprises a first wheel rotating about a first horizontal axis fixed relative to the carriage, a second wheel rotating about a second horizontal axis fixed relative to the subframe and in the same vertical plane as the first horizontal axis, a link pivotally connected at one end to the first wheel in an off center relation and at its opposite end to the second wheel in an off center relation, and means for rotating the first and second wheels.
Claim 18
Dependent Claim
50 words
The phototypesetting machine according to claim 15 wherein the distance between the pivotal connection at one end of the link and the center of the corresponding wheel is one half the distance between the pivotal connection at the other end of the link and the center of the other wheel.
Claim 19
Dependent Claim
108 words
The phototypesetting machine according to claim 15 wherein the wheels are mounted on shafts, each shaft having a pulley and a clutch connecting the pulley to the shaft, the disc rotating motor having a pulley, a first idler pulley being provided on the carriage in vertical alignment with the motor pulley, a second idler pulley being provided on the carriage and aligned with the pulley of the upper one of the shafts so that the second idler pulley and the upper one of the wheel driving pulleys are tangent to a common vertical line, a belt being entrained over the motor pulley, idler pulleys and wheel drive pulleys.
Claim 20
Dependent Claim
66 words
The phototypesetting machine according to claim 9 further including means for moving the carriage comprising a disc mounted to the base for rotation about an axis normal to the path of movement of the carriage, means to rotate the disc, and an arm pivotally connected at one end to the disc in an off center relation and pivotally connected at its opposite end to the carriage.
Claim 21
Dependent Claim
162 words
The phototypesetting machine according to claim 18 wherein the lens is supported by a second carriage movable along the same path as the font disc support carriage, the means for maintaining the lens in focus comprising a cam having two cam surfaces at right angles to one another and acted on respectively by a roller affixed to the base and a roller affixed to the font disc support carriage, the cam being pivotally connected to the second carriage, the means for moving the carriage including a bar slidably mounted on the base, a pulley at either end of the bar, an endless belt secured to the font support carriage and the carriage moving disc and passing over the pulleys, the second carriage mounting a lens arm having a roller contacting the upper surface of the bar, the bar having a notch in its upper surface for engaging the roller of the lever arm during a portion of the movement of the bar.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |