US2071147A - Twirler ring for typewriter platens - Google Patents

Twirler ring for typewriter platens Download PDF

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Publication number
US2071147A
US2071147A US78762A US7876236A US2071147A US 2071147 A US2071147 A US 2071147A US 78762 A US78762 A US 78762A US 7876236 A US7876236 A US 7876236A US 2071147 A US2071147 A US 2071147A
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United States
Prior art keywords
twirler
ring
knob
platens
typewriter
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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
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US78762A
Inventor
Charles J Watson
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PEERLESS KEY Co Inc
PEERLESS KEY COMPANY Inc
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PEERLESS KEY Co Inc
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Application filed by PEERLESS KEY Co Inc filed Critical PEERLESS KEY Co Inc
Priority to US78762A priority Critical patent/US2071147A/en
Application granted granted Critical
Publication of US2071147A publication Critical patent/US2071147A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • B41J11/24—Detents, brakes, or couplings for feed rollers or platens
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20732—Handles
    • Y10T74/20834—Hand wheels
    • Y10T74/2087—Rim grips and covers

Definitions

  • This invention relates to improvements in twirler rings for use on typewriter platens.
  • a further object is the provision of a twirler ring for typewriters having an internal circumferential groove centrally positioned so as to produce a cushioning eifect, without impairing the grip of the ring on the knob of a typewriter.
  • Fig. 1 is a side view, of a knob for typewriter platens having fixed thereon a twirler ring embodying my invention
  • Fig. 2 is an elevational view partly in section of a portion of a platen and knob therefor, having mounted thereon twirler ring in accordance with my invention
  • Fig. 3 is a sectional view of a portion of the twirler ring showing the manner in which the cushioning effect is produced
  • Fig. 4 is a sectional view of a modified form of the invention.
  • a platen 4 mounted on a shaft 5 having a circular knob 6 which is knurled as is customary in typewriters.
  • a twirler ring which comprises an annulus I made of rubber or similar material and having the outer periphery thereof knurled and the inside of the twirler ring being also preferably knurled to grip the knurled surface of the knob 6.
  • the annulus I has a flange 8 on the outer side of the knob 6 and a shorter flange 9 on the inner side of the knob.
  • the annulus I is provided on the inner surface thereof with a centrally positioned circumferential groove 10 which is bordered on each side by the knurled portions H and I2 which firmly grip the knob 6 as above described.
  • Fig. 4 a modified form of the invention in which the annulus is provided with a centrally positioned circumferential groove 20 and has a plurality of spaced ribs 2
  • contact the knob 6 and provide sufficient support for the collapsing of the twirler ring.
  • a twirler ring for knobs of typewriter platens comprising an annulus having on the inner surface thereof a centrally positioned circumferential groove, and a plurality of space-d ribs projecting into the groove.
  • a twirler ring for knobs of typewriter platens comprising an annulus having on the inner surface thereof a centrally positioned circum-- ferential groove, the surface of the annulus bordering the groove being knurled to enable it to firmly grip a platen knob.
  • a twirler ring for knobs of typewriter platens comprising an annulus having on the inner surface thereof a centrally positioned circumferential groove, a plurality of spaced ribs projecting into the groove, and having an inner and outer flange of different dimensions.
  • a twirler ring for knobs of typewriter platens comprising an annulus having on the inner surface thereof a centrally positioned circumfertial groove with parallel side walls, the inner surface of the annulus bordering the groove being knurled to enable it to firmly grip a platen knob.
  • a twirler ring for knobs of typewriter platens comprising an annulus having on the inner surface thereof a centrally positioned circumfertial groove with parallel side walls, the inner surface of the annulus bordering the groove being knurled to enable it to firmly grip a platen 'knob, and a plurality of spaced ribs projecting from the bottom of the groove to engage a platen to provide sufficient support to prevent collapsing of the twirler ring.

Description

Feb. 16, 1937.
C. J. WATSON TWIRLER RING FOR TYPEWRITER PLATENS Filed May 9, I936 Patented Feb. 16, 192.7
UNITED STATES TWIRLER RING FOR TYPEWRITER PLATENS Charles J. Watson, Brooklyn, N. Y., assignor to Peerless Key Company, Inc., New York, N. Y., a corporation of New York Application May 9, 1936, Serial No. 78,762
5 Claims.
This invention relates to improvements in twirler rings for use on typewriter platens.
It has been found desirable to facilitate the .rotation of platens for'typewriters to provide the knobs of the platens with twirler rings generally made of rubber or a similar material. Heretofore, twirler rings have been objectionable in that they gripped the knobs of the platen so tightly that the rings were hard to the touch.
It is an object of this invention to provide a twirler ring which can firmly grip the knob -of a typewriter platen and at the same time have a cushioning effect which is easy upon the fin gers of an operator.
A further object is the provision of a twirler ring for typewriters having an internal circumferential groove centrally positioned so as to produce a cushioning eifect, without impairing the grip of the ring on the knob of a typewriter.
These and other advantageous objects which will later appear, are accomplished by the simple and practical construction and arrangement of parts hereinafter described and exhibited in the accompanying drawing, forming part hereof, and in which:
Fig. 1 is a side view, of a knob for typewriter platens having fixed thereon a twirler ring embodying my invention,
Fig. 2 is an elevational view partly in section of a portion of a platen and knob therefor, having mounted thereon twirler ring in accordance with my invention,
Fig. 3 is a sectional view of a portion of the twirler ring showing the manner in which the cushioning effect is produced, and
Fig. 4 is a sectional view of a modified form of the invention.
Referring to the drawing, there is shown a platen 4 mounted on a shaft 5 having a circular knob 6 which is knurled as is customary in typewriters. Mounted on the knob 6 is a twirler ring which comprises an annulus I made of rubber or similar material and having the outer periphery thereof knurled and the inside of the twirler ring being also preferably knurled to grip the knurled surface of the knob 6. The annulus I has a flange 8 on the outer side of the knob 6 and a shorter flange 9 on the inner side of the knob.
In order to produce a cushioning effect, the annulus I is provided on the inner surface thereof with a centrally positioned circumferential groove 10 which is bordered on each side by the knurled portions H and I2 which firmly grip the knob 6 as above described.
As shown in Fig. 3, when the twirler ring I and the knob 6 are gripped, due to the groove II] a cushioning effect is produced which is more pleasant to the touch than has heretofore been the case with twirler rings of the type described.
In Fig. 4 is shown a modified form of the invention in which the annulus is provided with a centrally positioned circumferential groove 20 and has a plurality of spaced ribs 2| projecting into the groove. The ribs 2| contact the knob 6 and provide sufficient support for the collapsing of the twirler ring.
The foregoing disclosure is to be regarded as descriptive and illustrative only, and not as restrictive or limitative of the invention, of which obviously an embodiment may be constructed including many modifications, without departing from the general scope herein indicated and denoted in the appended claims.
Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is: V
l. A twirler ring for knobs of typewriter platens, comprising an annulus having on the inner surface thereof a centrally positioned circumferential groove, and a plurality of space-d ribs projecting into the groove.
2. A twirler ring for knobs of typewriter platens, comprising an annulus having on the inner surface thereof a centrally positioned circum-- ferential groove, the surface of the annulus bordering the groove being knurled to enable it to firmly grip a platen knob.
3. A twirler ring for knobs of typewriter platens, comprising an annulus having on the inner surface thereof a centrally positioned circumferential groove, a plurality of spaced ribs projecting into the groove, and having an inner and outer flange of different dimensions.
4. A twirler ring for knobs of typewriter platens, comprising an annulus having on the inner surface thereof a centrally positioned circumfertial groove with parallel side walls, the inner surface of the annulus bordering the groove being knurled to enable it to firmly grip a platen knob.
5. A twirler ring for knobs of typewriter platens, comprising an annulus having on the inner surface thereof a centrally positioned circumfertial groove with parallel side walls, the inner surface of the annulus bordering the groove being knurled to enable it to firmly grip a platen 'knob, and a plurality of spaced ribs projecting from the bottom of the groove to engage a platen to provide sufficient support to prevent collapsing of the twirler ring.
CHARLES J. WATSON.
US78762A 1936-05-09 1936-05-09 Twirler ring for typewriter platens Expired - Lifetime US2071147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US78762A US2071147A (en) 1936-05-09 1936-05-09 Twirler ring for typewriter platens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78762A US2071147A (en) 1936-05-09 1936-05-09 Twirler ring for typewriter platens

Publications (1)

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US2071147A true US2071147A (en) 1937-02-16

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773437A (en) * 1951-06-20 1956-12-11 Rollei Werke Franke Heidecke Supplementary operating knob for photographic cameras
US3055584A (en) * 1962-09-25 Maier
US5469758A (en) * 1993-11-03 1995-11-28 The Grigoleit Company Knob with soft plastic cover
US6242064B1 (en) 1997-06-11 2001-06-05 The Grigoleit Company Method of attaching a cover to a tubular body such as a knob or a button and a knob or button of said method
USRE37687E1 (en) 1996-01-05 2002-05-07 The Grigoleit Company Method for manufacturing an indicator knob and a knob
WO2004079500A2 (en) * 2003-02-27 2004-09-16 Grass Valley (U.S.) Inc. Jog/shuttle knob
US6929294B2 (en) * 2000-10-11 2005-08-16 Daimlerchrysler Ag Vehicle having a luminous unlocking handle and method of making said handle
US20060048341A1 (en) * 2003-10-29 2006-03-09 Koller Thomas J Jog shuttle knob
US7036188B1 (en) 2004-03-24 2006-05-02 The Grigoleit Company Composite knob with light pipe leakage barrier
US20100236028A1 (en) * 2009-03-20 2010-09-23 Clark Jennifer D Button cover assembly and method for making same

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055584A (en) * 1962-09-25 Maier
US2773437A (en) * 1951-06-20 1956-12-11 Rollei Werke Franke Heidecke Supplementary operating knob for photographic cameras
US5469758A (en) * 1993-11-03 1995-11-28 The Grigoleit Company Knob with soft plastic cover
US5688461A (en) * 1993-11-03 1997-11-18 The Grigoleit Company Method of molding a composite plastic article
US6568036B1 (en) 1996-01-05 2003-05-27 The Grigoleit Company Composite indicator knob and a method for manufacturing a knob
USRE37687E1 (en) 1996-01-05 2002-05-07 The Grigoleit Company Method for manufacturing an indicator knob and a knob
US6391243B1 (en) 1996-01-05 2002-05-21 The Grigoleit Company Method for manufacturing an indicator knob
US6242064B1 (en) 1997-06-11 2001-06-05 The Grigoleit Company Method of attaching a cover to a tubular body such as a knob or a button and a knob or button of said method
US6528001B1 (en) 1997-06-11 2003-03-04 The Grigoleit Company Method of attaching a cover to a tubular body
US6929294B2 (en) * 2000-10-11 2005-08-16 Daimlerchrysler Ag Vehicle having a luminous unlocking handle and method of making said handle
WO2004079500A2 (en) * 2003-02-27 2004-09-16 Grass Valley (U.S.) Inc. Jog/shuttle knob
WO2004079500A3 (en) * 2003-02-27 2005-08-11 Grass Valley Us Inc Jog/shuttle knob
US20060048341A1 (en) * 2003-10-29 2006-03-09 Koller Thomas J Jog shuttle knob
US7036188B1 (en) 2004-03-24 2006-05-02 The Grigoleit Company Composite knob with light pipe leakage barrier
US20060156515A1 (en) * 2004-03-24 2006-07-20 Howie Robert K Jr Composite knob with light pipe leakage barrier
US7203998B2 (en) * 2004-03-24 2007-04-17 The Grigoleit Company Composite knob with light pipe leakage barrier
US20100236028A1 (en) * 2009-03-20 2010-09-23 Clark Jennifer D Button cover assembly and method for making same

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