US1237307A - Type-writer platen. - Google Patents

Type-writer platen. Download PDF

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Publication number
US1237307A
US1237307A US9780416A US9780416A US1237307A US 1237307 A US1237307 A US 1237307A US 9780416 A US9780416 A US 9780416A US 9780416 A US9780416 A US 9780416A US 1237307 A US1237307 A US 1237307A
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US
United States
Prior art keywords
type
platen
free
core
sound
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US9780416A
Inventor
Philippe De Clamecy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DE NEVERS TYPEWRITER Co
NEVERS TYPEWRITER CO DE
Original Assignee
NEVERS TYPEWRITER CO DE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEVERS TYPEWRITER CO DE filed Critical NEVERS TYPEWRITER CO DE
Priority to US9780416A priority Critical patent/US1237307A/en
Application granted granted Critical
Publication of US1237307A publication Critical patent/US1237307A/en
Anticipated expiration legal-status Critical
Assigned to SWITCHCRAFT, INC. reassignment SWITCHCRAFT, INC. SECURITY AGREEMENT Assignors: PB CAPITAL CORPORATION, AS AGENT
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/02—Platens
    • B41J11/04—Roller platens
    • B41J11/053—Roller platens with sound-deadening devices

Definitions

  • ⁇ shows the different portions of the netting 3 which may be struck by a type 6.
  • Figt 4C illustrates the dampering effect of the 1nterlaced members of the Woven backing.
  • the wire core 8 is provided With a rubber covering 4 drawn or formed over the Wire but substantially rindependent thereof.'
  • the molecules of this covering have a very low responsiveness to sound waves, and assist to deaden the noises produced by the striking type.
  • l V f yThe chambers defined'by the Woven shell 3 and disks 2 are filled with some fibrous material 5, the molecules of which are pretaerably of a non-vibrating nature.
  • I iind ordin'ary cotton wadding well adapted for this purpose in that it absorbs the sound and kills the repercussion entirely.
  • the cotton wadding is laid about the rod 1, and the Wire core with its lrubber covering is slipped over said rod in inclosing relation thereto.
  • a typewriter platen consisting of anV external impact receiving surface, a Woven shell inclosed by said surface, but wholly free of connection therewith so that the individual strands of the shell are substantially free to vibrate, a bearing shaft.
  • a typewriter platen consisting of ashaft, a plurality of supporting elements, a Woven wire backing inclosing said elements and having its individual strands substantially free to vibrate, and a filling of fibrous material within said backing and an external impact receiving surface supported on said backing.
  • a typewriter platen consisting of an external impact receiving envelop, -and a cylindrical woven wire backing inclosed by said envelop but wholly free ot' connection therewith so that the individual strands of .said backing are substantially free to vibrate.
  • a typewriter platen consisting of an external impact receiving surface, and a core of reticulated material inclosed by said surface but wholly free of connection there- .with so that the individual strands of the core are free to vibrate to thereby break the continuity of transmission of sound waves.
  • a typewriter platen including an external impact receiving surface, and a core of woven wire inclosed by said surface, but wholly free of connection therewith so that the individual strands of said core are free to vibrate to thereby break the continuity of transmission .of sound Waves.
  • a typewriter platen including an eX- ternal impact receiving surface, and a core of woven wire netting inclosed by said surface but wholly free of connection therewith so that the individual strands oi' the netting are substantially free to vibrate, said strands being disposed at right angles to each other, and one set being parallel to and the other set at right angles to the axis of rotation of the platen.
  • PHILPPE nu @LAMES-fil ⁇ Witnesses MARY P. VVo'rHnnsrooN, AGNES V.' OOoNNnLi..

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  • Handling Of Sheets (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)

Description

P. DE CLAMECY." TYPE WRITER PLATENI APPLICATION FILED MAY I6. I9I6r Patented-Aug. 21,1917.
\ shows the different portions of the netting 3 which may be struck by a type 6. Figt 4C illustrates the dampering effect of the 1nterlaced members of the Woven backing.
As Will be evident, the vibration of any particular portion of either a transverse 'or a longitudinal strand is checked and stopped at practically its inception by the other strands which bear on it from above and below. i This prevents vibrations oi' any considerable Wave length from being set up or from extending over any considerable area, thus eliminating sound to a large degree..
The wire core 8 is provided With a rubber covering 4 drawn or formed over the Wire but substantially rindependent thereof.'
The molecules of this covering have a very low responsiveness to sound waves, and assist to deaden the noises produced by the striking type. l V f yThe chambers deined'by the Woven shell 3 and disks 2 are filled with some fibrous material 5, the molecules of which are pretaerably of a non-vibrating nature. I iind ordin'ary cotton wadding well adapted for this purpose in that it absorbs the sound and kills the repercussion entirely.
In assembling my platen, the cotton wadding is laid about the rod 1, and the Wire core with its lrubber covering is slipped over said rod in inclosing relation thereto.
From the foregoing,4 it will be seen that my platen practically deadens the sound waves prodaiced by the shock or" the type strikingthe platen. The sound of the type against the paper or other surface being written upon, which surface is usually a good conductor oie/sound, can not be of course eliminated, but the sound caused by the type striking" against the platen. is so absorbed and distributed as to be practically silenced.
Various modifications in the form and construction of my invention may obviously be resorted to if within the limits of the appendedclaims.
Nhat l therefore claim and desire to secure by Letters Patent 1s:
1. A typewriter platen consisting of anV external impact receiving surface, a Woven shell inclosed by said surface, but wholly free of connection therewith so that the individual strands of the shell are substantially free to vibrate, a bearing shaft. a
nesten? 3. A typewriter platen consisting of ashaft, a plurality of supporting elements, a Woven wire backing inclosing said elements and having its individual strands substantially free to vibrate, and a filling of fibrous material within said backing and an external impact receiving surface supported on said backing.
4f. A typewriter platen consisting of an external impact receiving envelop, -and a cylindrical woven wire backing inclosed by said envelop but wholly free ot' connection therewith so that the individual strands of .said backing are substantially free to vibrate.
5. A typewriter platen consisting of an external impact receiving surface, and a core of reticulated material inclosed by said surface but wholly free of connection there- .with so that the individual strands of the core are free to vibrate to thereby break the continuity of transmission of sound waves.
6. A typewriter platen including an external impact receiving surface, and a core of woven wire inclosed by said surface, but wholly free of connection therewith so that the individual strands of said core are free to vibrate to thereby break the continuity of transmission .of sound Waves.
7. A typewriter platen including an eX- ternal impact receiving surface, and a core of woven wire netting inclosed by said surface but wholly free of connection therewith so that the individual strands oi' the netting are substantially free to vibrate, said strands being disposed at right angles to each other, and one set being parallel to and the other set at right angles to the axis of rotation of the platen.
In testimony whereof I aiiii: my signature in presence of two Witnesses.
PHILPPE nu @LAMES-fil `Witnesses MARY P. VVo'rHnnsrooN, AGNES V.' OOoNNnLi..
llt)
US9780416A 1916-05-16 1916-05-16 Type-writer platen. Expired - Lifetime US1237307A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US9780416A US1237307A (en) 1916-05-16 1916-05-16 Type-writer platen.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9780416A US1237307A (en) 1916-05-16 1916-05-16 Type-writer platen.

Publications (1)

Publication Number Publication Date
US1237307A true US1237307A (en) 1917-08-21

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Family Applications (1)

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US9780416A Expired - Lifetime US1237307A (en) 1916-05-16 1916-05-16 Type-writer platen.

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SWITCHCRAFT, INC., ILLINOIS

Free format text: SECURITY AGREEMENT;ASSIGNOR:PB CAPITAL CORPORATION, AS AGENT;REEL/FRAME:015851/0588

Effective date: 20050328