US1463599A - Typewriting machine - Google Patents

Typewriting machine Download PDF

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Publication number
US1463599A
US1463599A US571154A US57115422A US1463599A US 1463599 A US1463599 A US 1463599A US 571154 A US571154 A US 571154A US 57115422 A US57115422 A US 57115422A US 1463599 A US1463599 A US 1463599A
Authority
US
United States
Prior art keywords
anvil
type
type bars
wire
bars
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
US571154A
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English (en)
Inventor
George A Seib
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.)
Remington Typewriter Co
Original Assignee
Remington Typewriter Co
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 Remington Typewriter Co filed Critical Remington Typewriter Co
Priority to US571154A priority Critical patent/US1463599A/en
Priority to FR559933D priority patent/FR559933A/fr
Application granted granted Critical
Publication of US1463599A publication Critical patent/US1463599A/en
Anticipated expiration legal-status Critical
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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/10—Sound-deadening devices embodied in machines

Definitions

  • My present invention relates to stop mechanisms for the type bars of writing machines, and its general object is to provide new and improved mechanisms of the ycharacter stated. More specificially my invention has for its object the provision of a new and improved anvil or type bar contact device constructed to minimize the metallic noise which has heretofore resulted from the employment of an anvil of solid metal, while at the same time practically retaining the advantages of a solid anvil construction.
  • anvil made of coiled wire multiple wound, that is, wound from a number of strands or wires, five for example, as in the present instance, which are led from separate spools or supply holders and wound simultaneously upon an arbor producing a hollow cable or helix.
  • I am able to give the wires a pitch or angle sufficient to cause the type bars always to strike them crossWise, the type bars thus being prevented from forcing their Way between the wires and lodging or sticking and thus retarding or interfering with the printing operations.
  • the anvil is composed of two 'hollow cables or helices', one fitting within the other and serving as a core, as I have found by experiment that such a construction prevents collapse ordistortion of the anvil when it is bent or curved into an arc and fitted into its seat in the type bar support or segment.
  • the inner helix or core piece may be made of the same diameter or fineness of wire y.as the outer helix but is prefarably wound oppositely so that its plies or strands cross at an angle to the outer plies or strands. .l
  • Figure 1 is a fragmentary front eleva tion partly in section showing a type bar support or segment with my invention applied thereto.
  • Figure 2 is-a vertical sectional view taken on a plane indicated by the section line 1 ⁇ 1 in Fig. 1 and looking in the direction of the arrows at said line, said Figure 2 being drawn to an enlarged scale and showing one of the type bars co-operatively engaged with the anvil or contact device.
  • Figure 3 is an enlarged fragmentary view of the outer helix or part of the anvil.
  • Figure 4 is an enlarged fragmentary view of the inner part or core.
  • Figure 5 is an enlarged fragmentary view partly in section of the anvil or contact device.
  • Figure 6 is an enlarged fragmentary view of ay modification.
  • FIGS 1 and 2 of the drawings illustrate fragmentarily the type bars and type bar support of a No. 10 Remington typewriting machine to which my invention is shown applied.
  • Said type bar support or segment 1 is arcuate in form and vertically fixed to the framing by screws 1a below and somewhat forward of the platen 2.
  • Said segment is formed with a series of radial kerfs or slot-s indicated at 3 in which the type bars 4 are arranged and whereby they are guided, each type bar being provided at its outer end with a type block 5 formed with an upper case type and a ylower case type that are adapted to contact co-operatively with the front face of the platen 2.
  • the set of type bars are pivoted on an arcuate fulcrum wire 6 which is common to all of the type bals, and is supported on the segment l, said fulcrum wire extending transversely of the guide slots Scand being seated in an arcuate groove cut in the rear portion of the segv dfwices 10 having heads or securing portions with and guide certain parts of the guiding as heretofore constructed and in 'other typeand line finding mechanism not herein shown.
  • Both these coils or helices may be made of piano or spring wire of the same diameter and of sufficient elasticity to prevent permanent distortion from the blows received from the type bars.
  • Both coils or helices l are multiple wound; that is to say, instead of being /wound or composed of a single ,wire each is preferably composed of iive wires or strands wound simultaneously side by side. The two coils however are wound. in opposite directions. The results of such multiple winding, so far as ,aiecting the character of the coils is concerned, will be clearly understood from an inspection Vof Figs. 3 and 4, which show respectively portions or sections of the outer coil 13 Yand the inner coil 14.
  • ive wires of coil 13 are designated in order as a,-b, c, d and e. Beginning at the right in Fig. 3 these five wires appear side by side in the coil t0 be succeededv by the samefive inthe same order; and so on.
  • Fig. 4 which shows the inner coil 14 the five wires of which it is composed are designated in order a", b', c', d and e. Beginning at the left these five Wires are wound together side by side 'in l the said order and are next succeeded by themselves in the same order; and so on.
  • the coiled wire anvil when mounted in place is curved or bent into an arc concentric with the arc of the type bar pivot 6 and against its own inherent tendency to remainA Fig. 2 it will be observed that the anvil is circular in cross section and has a hollow interior indicated at 14a. rll ⁇ he circular form allows the wire to beturned when detached to vary the portion of the surface struck by the type bars, thus providing for ,wear and inc reasing the life of the anvil.
  • the anvil 13, 14 is mounted on the segment, being seated in an arcuate groove or undercut therein indicated at 15.
  • rllhe groove 15 is il-shaped in cross section and is cut in the front face of the segment concentric with the groove of the type bar fulcrum wire 6, and is so shaped and proportioned as to leave the front portion of the ,anvil projecting forward beyond the face of the segment as will be vclearly understood from Fig. 2..
  • a segmental clamp or retaining plate 16 having an angular flange or contact portion 17 is detachably secured to the front ⁇ face of the segment above the anvil, prefer-ably by the screws 12, the plate 16, 17 being clamped between the front face of the segment and the under faces of the guide pieces 10, 11.
  • the inner coil or core may be .dispensed with and a'n anvil com posed of a single coil, 'such as or similar to mesme the outer coil 13, may be found to give satisfaction.
  • a'n anvil com posed of a single coil, ' such as or similar to mesme the outer coil 13
  • Fig. 6 there iis illustrated a modified construction wherein the anvil is composed, of a'single coil 18 of wire, the coil in turn being wound from a single wire instead of a plurality of wires as in the Figs. 1-5 construction.
  • the pitch or angularity isconside rably less in the Fig. 6 construction and as a result the type bars will strike against the helix almost parallel with the coils so that the bars at times may stick or lodge between the coils, thus interfering with the proper operation of the type bars.
  • a multiple Wound or com-- pound helix or helices for the anvil since thereby the pitch ofthe coils is increased to such an extent that the liability of sticking is obviated.
  • An anvil formed or made in the manner described, and particularly the Figs. 1-5 construction provides a contact or cushion that retains the advantages of the solid anvil while eliminating to a large extent the disagreeable metallic noises incident to the use of the latter.
  • my construction there is a slight give 'or yield to the contact device or anvil when it is struck bythe type bar soJ that the bar instead of being instantly and finally arrested at the moment of contadt moves slightly and of course much more slowly towards the platen until the contact device will no longer yield and finally effects the arrest of the type bar.
  • the bar is thus arrested just prior to the contact of the type with the paper on the platen, the imprint of the type being composed as the result of the whipping over ofthe t end of the bar due to its momentum.
  • the contact device or anvil in the present invention is sufficiently elastiq to give the type bar what may be termed a gradual arrest in contrast with the instant arrest of the solid anvil, thus tending to re turn the noise; and the elasticity of the present contact device has the further advantage of increasing the speed of return of t-he type bar to its normal position.
  • the contact device or anvil in the present invention it may be found desirable to time the Contact of the bar with the arresting dethe contact of the type bar with a solid anvil.
  • anvil refers to an anvil or contact device that is adapted/'to yield or give somewhat to the impact of the type bars in contradistinction to the immovable, inflexible or solid style of anvil heretofore usually employed.
  • each coil bebars but capable of straightening itself 9.
  • a typewriting machine the combination of a platen, a type bar support, a set of key operated type bars thereon, and
  • anvil circular in cross section and seated in a V-groove in said support, and a segmental retaining plate detachably secured to sald support and operative 'to retain said anvil anvil being secured to said support .in an'- arc of a circle but through its inherent spring beingr adapted to-straighten out when .removed ⁇ from said support.

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US571154A 1922-06-27 1922-06-27 Typewriting machine Expired - Lifetime US1463599A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US571154A US1463599A (en) 1922-06-27 1922-06-27 Typewriting machine
FR559933D FR559933A (fr) 1922-06-27 1922-12-15 Perfectionnements aux mécanismes d'arrêt pour les barres à caractères des machines à écrire

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US559933XA 1922-06-27 1922-06-27
US403931XA 1922-06-27 1922-06-27
US200053XA 1922-06-27 1922-06-27
US571154A US1463599A (en) 1922-06-27 1922-06-27 Typewriting machine

Publications (1)

Publication Number Publication Date
US1463599A true US1463599A (en) 1923-07-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US571154A Expired - Lifetime US1463599A (en) 1922-06-27 1922-06-27 Typewriting machine

Country Status (2)

Country Link
US (1) US1463599A (fr)
FR (1) FR559933A (fr)

Also Published As

Publication number Publication date
FR559933A (fr) 1923-09-24

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