US1726841A - Duplicating machine - Google Patents

Duplicating machine Download PDF

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Publication number
US1726841A
US1726841A US257415A US25741528A US1726841A US 1726841 A US1726841 A US 1726841A US 257415 A US257415 A US 257415A US 25741528 A US25741528 A US 25741528A US 1726841 A US1726841 A US 1726841A
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US
United States
Prior art keywords
roller
shaft
perforated
stencil
secured
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
US257415A
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English (en)
Inventor
Kings John George
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1726841A publication Critical patent/US1726841A/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
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L13/00—Stencilling apparatus for office or other commercial use
    • B41L13/04—Stencilling apparatus for office or other commercial use with curved or rotary stencil carriers

Definitions

  • This invention relates to duplicating machines for printing circulars, lettersand the like and it has for its primary object to provide a portable hand operated machine of improved and extremely simplified construction.
  • the imp-roved duplicating or printing machine comprises a perforated hollow cylindrical roller' of metal or other material mounted to turn against the action'of spring means with respect to a shaft adapted to be connected to a frame or handle, the said roller beingv adapted to permit a perforated stencil to be passed over the same and detachably secured thereto, and an inking roller carried by ,the said shaft, the said inking roller being carried by the said shaft in a manner to be yieldable relativelyY thereto, and/or the sald shaft being so mounted as to be yleldable with respect to the perforated roller to permitof the inking roller being held yieldingly relatively tothe inner face of the said perforated roller.
  • Figure 1 is an end elevation of a duplicating or printingvmachine embodying the invention
  • Figure 2 is a longitudinal section taken on the line -m, of F igureA l, a
  • Figure 3 is a cross-section taken on the line y-y, of Figure 2
  • Figure 4 is an inverted plan view.
  • the machine ⁇ 40 comprises a perforated hollow cylindrical rollera which may be of any suitable construction,the'said roller being adapted to be moved angularly relatively. t0 a shaft b, against the Jaction of spring means, such as Ithe spiral'springs c, see particularly Figures 2 and 3, for returning the rollerI to normal position after each operation.
  • the said springs are each ⁇ secured at one end thereof to the shaft b and at the other end to a cor- .5o responding end wall d ofthe roller, the end walls also having' securedthereto protecting casings orfcovers 'e for the springs.
  • the nds of the shaft b extend beyond the end alls of the roller a and are reduced to pro- 'de diametrically opposed fiat faces to coo erate with the slotted ends f, see particu- 257,415, and in Great Britain March 18, 1927.
  • the said sheet ZA may be detachably secured as by means of longitudinal bars myn, engaging corresponding loops at the ends of the sheet, the bar m co-operating at the ends thereof with slotted elements o secured to the end walls'v of the roller a, the said bar having turned-up end portions p to prevent longtiudinal move-
  • the bar n is provided with eyes g, and lugs 1 ⁇ lor the'like are secured to the roller a, through which screwss are passed and engaged by nuts t.
  • the stencil v may be detachably secured in position as by means of the heads of spaced studs u secured to the bar m and passed through holes in the loop of the sheet Z*t with which the bar m engages, and through corresponding holes lv in the stencil adjacent to one end thereof, the other end of the stencil being conveniently secured as by means of a clampin bar w having the ends z thereywill force or cause the ink to pass through the perforations in the roller a and through the porous wax stencil la.
  • the said roller may be yieldably supported as by means of rubber or other resilient 80 ment of the bar with respect to the roller a.
  • the roller a may be felt covered to hold the ink, or in some cases a felt or a plain rubber or like roller may be employed in conjunction with the sheet l of felt or textile material arranged between the waxed stencil Ic and the perforated cylindrical roller a. Suitable limiting stops may be provided either on the roller a, or on the means for manipulating the device, to determine the angular movement of the roller a.
  • the roller a is shown provided at Figure 3 with longitudinal strips e of felt or the like, which strips may co-operate with the inking roller a and serve as stops or cushions therefor.
  • a portable printing machine comprising a hollow perforated roller adapted to have ink forced through the perforations and adapted to carry a stencil, a shaft extending axially of the roller and centrally offset from the axial plane within the roller, an inking roller for cooperation with the inner surface of the perforated roller to force the through the perforations, a resilient connection between theY inkingroller and the offset portion of the shaft, and means carried by the shaft for adjusting the tension of the resilient connection.
  • a portable printin machine comprising a hollow perforated roiller adapted to have ink forced through the perforations and adapted to carry a stencil, a shaft extending axially of the roller and centrally offset from the axial plane within the roller, an inking roller for cooperation with the inner surface of the perforated roller to force the ink through the perforations, a spring strip secured to the odset portion of the shaft and terminally supporting the inking roller, and screws threaded in the oiset portion of the shaft and bearing on said spring strip to provide for varying the pressure of the inking roller on the inner surface of the hollow roller.
  • a portable printing machine comprising a hollow perforated roller adapted to have ink forced through the perforations and adapted to carry a stencil, a shaft extending axially of the roller and centrally offset from the axial plane within the roller, an inking roller for cooperation with the inner surface of the perforated roller toY force the ink through the perforations, a handle connected to said shaft to cause angular movement of the hollow roller when in contact with the surface and under operating pressure on the handle, and a spring connection between the hollow roller and shaft tensioned in the operating movement of the hollow roller to return the hollow roller tornormal position on release f the operating pressure.

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  • Inking, Control Or Cleaning Of Printing Machines (AREA)
US257415A 1927-03-18 1928-02-27 Duplicating machine Expired - Lifetime US1726841A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15438/26A GB275378A (en) 1927-03-18 1927-03-18 Improvements in or relating to duplicating machines

Publications (1)

Publication Number Publication Date
US1726841A true US1726841A (en) 1929-09-03

Family

ID=10059134

Family Applications (1)

Application Number Title Priority Date Filing Date
US257415A Expired - Lifetime US1726841A (en) 1927-03-18 1928-02-27 Duplicating machine

Country Status (4)

Country Link
US (1) US1726841A (en, 2012)
BE (1) BE349354A (en, 2012)
FR (1) FR649819A (en, 2012)
GB (1) GB275378A (en, 2012)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419695A (en) * 1944-10-26 1947-04-29 Mohawk Carpet Mills Inc Machine for stencilling fabric with suction
US2513419A (en) * 1948-10-14 1950-07-04 Mann Max Hand stamp
US3240149A (en) * 1963-11-26 1966-03-15 Max J Doppelt Stencil pad tensioning means in a duplicating device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419695A (en) * 1944-10-26 1947-04-29 Mohawk Carpet Mills Inc Machine for stencilling fabric with suction
US2513419A (en) * 1948-10-14 1950-07-04 Mann Max Hand stamp
US3240149A (en) * 1963-11-26 1966-03-15 Max J Doppelt Stencil pad tensioning means in a duplicating device

Also Published As

Publication number Publication date
GB275378A (en) 1927-08-11
BE349354A (en, 2012)
FR649819A (fr) 1928-12-28

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