Patent US4079825A successfully refreshed from Google Patents.
US4079825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable braille typewriter
Assignee: Individual
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Filing: 1976-12-07
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Granted: 1978-03-21
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Expires: 1996-12-07
Abstract
Abstract A portable typewriter for embossing paper or the like according to the Braille code system and other like systems. It consists generally of a base having a matrix of Braille cells, a vertical track which guides a horizontal track upon which a keyboard transverses. The keyboard has six keys as well as bars for tab setting, clearing, and by-passing and bars for spacing and keyboard return. The close spacing of the keys allows two or more keys to be depressed using one or more fingers. This bridging expedites typing speed.
Inventors
- 👤 William B. Fewell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:03
CPC Classifications
B; B41; B41J; B41J3/00; B41J3/32
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
333 words
An apparatus for recording tactile information comprising: a keyboard having a plurality of keys; means for mounting said keyboard for transverse movement upon a first track; an escapement system including means for alternately initiating and stopping movement of said keyboard upon said first track in response to actuation of one or more of said keys to form embossed characters; means for biasing the keyboard in a return direction; arms extended from said keys and terminating in points for embossing a writing material surface; said escapement system including means for allowing selective free movement of said keyboard along said first track; a keyboard cover with slotted means for aiding in the guiding of said arms and points during embossing; said first track normally positioned horizontally and upon which said keyboard traverses having a plurality of tabs and means for setting, releasing and by-passing said tabs; said setting and releasing means including means for holding said tabs in set and unset positions by means of magnetic attraction; means for retaining said keyboard in a selected position; said escapement system including slots on said track; means for moveably positioning said first track to a base for alignment purposes; means for restraining a writing material including a resilient material secured to said first track; means for moveably securing said first track to a second track substantially perpendicular to said first track; said second track normally positioned vertically and serving to allow vertical positioning of said first track in a horizontal position; said base having a matrix of indentations where a group of said indentations within said matrix corresponds to a six unit cell of the Braille or Braille like system; said base having a series of larger indentations oriented vertically for the purpose of receiving protuberances of said first track and said protuberances being utilized for vertical alignment of said first track; means for magnetically holding down said normally horizontal first track to said base; and means for securing and positioning a writing material to said base.
Claim 2
Independent Claim
333 words
An apparatus for recording tactile information comprising: a keyboard having a plurality of keys; means for mounting said keyboard for transverse movement upon a first track; an escapement system including means for alternately initiating and stopping movement of said keyboard upon said first track in response to actuation of one or more of said keys to form embossed characters; means for biasing the keyboard in a return direction; arms extended from said keys and terminating in points for embossing a writing material surface; said escapement system including means for allowing selective free movement of said keyboard along said first track; a keyboard cover with slotted means for aiding in the guiding of said arms and points during embossing; said first track normally positioned horizontally and upon which said keyboard traverses having a plurality of tabs and means for setting, releasing and by-passing said tabs; said setting and releasing means including means for holding said tabs in set and unset positions by means of magnetic attraction; means for retaining said keyboard in a selected position; said escapement system including slots on said track; means for moveably positioning said first track to a base for alignment purposes; means for restraining a writing material including a resilient material secured to said first track; means for moveably securing said first track to a second track substantially perpendicular to said first track; said second track normally positioned vertically and serving to allow vertical positioning of said first track in a horizontal position; said base having a matrix of indentations where a group of said indentations within said matrix corresponds to a six unit cell of the Braille or Braille like system; said base having a series of larger indentations oriented vertically for the purpose of receiving protuberances of said first track and said protuberances being utilized for vertical alignment of said first track; means for magnetically holding down said normally horizontal first track to said base; and means for securing and positioning a writing material to said base.
Claim 3
Dependent Claim
30 words
An apparatus recited in claim 1 wherein a plurality of said keys are arranged such that one or more of said keys may be bridged by two or more fingers.
Claim 4
Dependent Claim
68 words
An apparatus recited in claim 1 wherein a plurality of said tabs are employed along said first track and said first track having attached or adhered magnetized material for the purpose of selectively retaining said tabs into operable or non operable positions to effect a keyboard locating and stopping position relative to each said tab and relative to a position on a Braille matrix, or Braille like matrix.
Claim 5
Dependent Claim
18 words
An apparatus recited in claim 1 wherein magnetized material serves to restrain said first track to said base.
Claim 6
Dependent Claim
160 words
An apparatus recited in claim 1 wherein said escapement means are provided for regulating movement of said keyboard with respect to said first track; whereas said escapement means has a lever pivoted about a rotational point; whereas one end of said lever is activated responsive to depression of said keys; whereas said keyboard has a projection which is thrust into slotted means of said first track for halting movement of said keyboard; whereas, at the same time, said lever, by pivoting action, relieves a detent attached thereto from said slotted means; whereas said detent rotates slightly about its own pivotal point and caused by spring action against said detent; whereas, upon release of said keys, said projection is relieved from said slotted means thus allowing movement of said keyboard, via spring reel and cord with respect to said first track, whereas said detent is forced, by said spring into a respective slot of said slotted means thus halting said keyboard.
Claim 7
Dependent Claim
28 words
An apparatus recited in claim 1 wherein said first track has concavity means to accept rollers, and rollers are provided, for mobilizing said keyboard upon said first track.
Claim 8
Dependent Claim
43 words
An apparatus recited in claim 1 wherein component means located under said keys is selectively responsive to the depression of one or a number of said keys depressed simultaneously; whereby said component means upon the depression of said keys, activates said escapement means.
Claim 9
Dependent Claim
43 words
An apparatus recited in claim 1 wherein said indentations are receptive of said projectile points; whereas when a writing surface material is placed between said projectile points and said indentations and when said projectile points are depressed into said indentations, an embossment occurs.
Claim 10
Dependent Claim
19 words
An apparatus recited in claim 1 wherein said securing means comprises clamping means for holding material to be embossed.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |