US3818597A - Apparatus for pressing a recording or engraving instrument against a surface moving relative thereto - Google Patents

Apparatus for pressing a recording or engraving instrument against a surface moving relative thereto Download PDF

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Publication number
US3818597A
US3818597A US00283522A US28352272A US3818597A US 3818597 A US3818597 A US 3818597A US 00283522 A US00283522 A US 00283522A US 28352272 A US28352272 A US 28352272A US 3818597 A US3818597 A US 3818597A
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US
United States
Prior art keywords
lever
instrument
double
arm lever
pivot mounting
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
US00283522A
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English (en)
Inventor
A Schmied
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.)
Contares AG
Original Assignee
Contares AG
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Filing date
Publication date
Application filed by Contares AG filed Critical Contares AG
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Publication of US3818597A publication Critical patent/US3818597A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B3/00—Artists' machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two-dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
    • B44B3/06—Accessories, e.g. tool or work holders

Definitions

  • the present invention relates to a new and improved apparatus for pressing a recordingor engraving instrument, typically in the form of a writing or engraving stylus or needle, against the surface of a body moving relative thereto.
  • Equipment of this type is required, for instance, in conjunction with drafting-. and engraving devices which operate automatically in accordance with a prescribed program and the purpose of which is to press the writing or engraving stylus which is movable in axial direction by means of a pre-adjustable force against the surface of the body, this force being accommodated to the nature of the stylus and the surface to be imprinted upon.
  • the magnitude of the pressure force upon overcoming unavoidable irregularities of the surface to be imprinted, should change as little as possible in order to avoid irregular marking or engraving.
  • the absolute magnitude of the pressure forceacting upon the stylus or the like should be adjustable within wide limits.
  • a further significant object of the present invention relates to a new and improved construction of apparatus for pressing a writingor engraving instrument against a relatively movable surface in an extremely reliable and positive manner with a relatively constant contact force which can be selectively varied within wide limits.
  • the apparatus of this development is manifested by the features that the pivotal mounting arrangement of a double-arm lever serving to transmit the force of an elastic pressure generator to the writing or engraving instrument is displaceable in the lengthwise direction of the lever.
  • FIG. 1 is a schematic vertical sectional view of a preferred constructional form of inventive apparatus.
  • FIG. 2 is a cross-sectional view of the apparatus of FIG. 1, taken substantially along the line IIII thereof.
  • the exemplary embodiment of inventive apparatus for pressing a recordingor engraving instrument, typically a writing or engraving stylus, against a relatively movable body surface will be seen to comprise a fixed table plate 1 which forms a support for the surface such as a paperor metallic foil clamped or otherwise suitably secured thereon and which is to be imprinted with any suitable marking or the like.
  • a paperor metallic foil clamped or otherwise suitably secured thereon forms a support for the surface such as a paperor metallic foil clamped or otherwise suitably secured thereon and which is to be imprinted with any suitable marking or the like.
  • the phantom lines 10a of the paper or metallic foil 10 represent unavoidable surface irregularities of thickness Ah.
  • a movable support plate 2 serving for guiding a writing or engraving instrument or stylus 3 in two coordinate directions X and Y in known manner carries in the direction of the vertical axis Z a bearing sleeve 20.
  • the writing or engraving stylus 3 is displaceably mounted at the bearing sleeve 20 through the agency of two bearings 21 and 22 for movement in the direction of vertical axis Z and is preferably rotatable about axis Z with the aid of known and therefore not particularly illustrated means.
  • a concave bearing socket or bushing 30 for receiving the tip of a pressure pin or bolt 40 provided at one end or end region of a pressure transmission lever 4 possessing a constant acting length.
  • the other end or end region of the aforementioned lever 4 is connected through the agency of a joint or hinge arrangement 41 with a pressure generator means.
  • the pressure generator means a helical spring 42 secured to an auxiliary support 5 bearing via the braces or column supports 51 and 52 upon the movable support plate 2.
  • the auxiliary support 5 is provided for this purpose with an angled projection 50 at which is threadably connected a screw 43 serving for adjusting the pre-bias or stress of the spring 42.
  • a threaded spindle 53 oriented substantially parallel to the lever 4 is rotatably and axially non-displaceably mounted at the column supports-51 and 52 of the auxiliary support 5.
  • a hand-operated rotary knob 55 or equivalent structure serves to selectively rotate the threaded spindle 53.
  • the threading 53a of the spindle 53 engages with the internal threading 44a of a carriage 44 which is mounted for lengthwise displacement in a profiled groove 54 of the auxiliary support 5.
  • Carriage 44 carries at its underside a roller or roll 45 against which is pressed the lever 4 under the action of the pre-stressed spring 42.
  • This roller 45 thus forms a pivotal mounting arrangement which can be selectively displaced along the length of the lever 4, and which thus may further sub-divide the lever into two lever arms a1 and bl and a2 and b2 respectively.
  • the pressure force Pa transmitted to the writing or engraving stylus 3 assumes the value Pa2 b la Pb Pb, that is to say it is approximately 10 times greater than in the other terminal position of the carriage 44. Accordingly, the force changes brought about by the irregularities Ah of the foil 10 can be approximately 10 times larger. It will be observed that the double-arm lever 4 possesses a constant acting length, i.e. irrespective of the position of the carriage 44 and roller 45 the total length of the two lever arms, such as lever arms a1 and bl and similarly a2 and b2 remains constant.
  • An apparatus for pressing a writingor engraving instrument against a body surface wherein relative movement occurs between the instrument and the surface comprising a writing or engraving instrument, a double-arm lever possessing a constant acting length and provided with opposed end regions, one of said end regions of the double-arm lever acting upon said instrument, an elastic pressure generator means acting upon the other end region of said double-arm lever for applying a force to the writing instrument through the agency of said double-arm lever, means providing a pivot mounting for said double-arm lever, and means for adjusting said pivot mounting means in the lengthwise direction of said lever.
  • said adjusting means for said pivot mounting means comprises a carriage, a rotatable threaded spindle disposed approximately parallel to said lever and connected with said carriage for adjusting said carriage in the lengthwise direction of the lever, and said pivot mounting means comprising a roller member secured to said carriage.
  • An apparatus for pressing a writingor engraving instrument against a body surface wherein relative movement occurs between the instrument and the surface comprising an instrument, a double-arm lever possessing two lever arms, the total length of said lever arms being constant, said double-arm lever having an end portion acting upon said instrument, an elastic pressure generator means for applying a force to the instrument through the agency of said double-arm lever, means providing a pivot mounting for said doublearm lever, and means for adjusting said pivot mounting means in the lengthwise direction of said lever.

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  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Recording Measured Values (AREA)
US00283522A 1971-10-11 1972-08-24 Apparatus for pressing a recording or engraving instrument against a surface moving relative thereto Expired - Lifetime US3818597A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1483071A CH539842A (de) 1971-10-11 1971-10-11 Vorrichtung zum Andrücken eines Schreib- oder Gravierstiftes an eine relativ dazu bewegliche Fläche

Publications (1)

Publication Number Publication Date
US3818597A true US3818597A (en) 1974-06-25

Family

ID=4404161

Family Applications (1)

Application Number Title Priority Date Filing Date
US00283522A Expired - Lifetime US3818597A (en) 1971-10-11 1972-08-24 Apparatus for pressing a recording or engraving instrument against a surface moving relative thereto

Country Status (9)

Country Link
US (1) US3818597A (2)
JP (1) JPS5224895B2 (2)
AT (1) AT319624B (2)
CH (1) CH539842A (2)
DE (1) DE2239669C3 (2)
FR (1) FR2152200A5 (2)
GB (1) GB1363560A (2)
IT (1) IT968805B (2)
SE (1) SE389997B (2)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5094134A (en) * 1990-06-08 1992-03-10 Roland Dg Corporation Cutting pen
US6021574A (en) * 1997-11-05 2000-02-08 Murray, Iii; William W. Scribing tool
US6427357B1 (en) * 1999-08-13 2002-08-06 Thomas W. Piper Spindle mounted marking device for CNC machines
US6460257B1 (en) * 1999-03-18 2002-10-08 Thk Co., Ltd. Scribing method and apparatus
US20050086816A1 (en) * 2002-05-30 2005-04-28 Gunther Siegel Apparatus for writing in metal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5460027A (en) * 1978-06-30 1979-05-15 Mutoh Ind Ltd Device for drawing line for drawing instrument

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1117735A (en) * 1913-03-25 1914-11-17 Allan P Whittemore Machine for cutting sheet-glass.
US2557447A (en) * 1948-11-22 1951-06-19 Augustine J Masi Pen holding attachment for engraving machines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1117735A (en) * 1913-03-25 1914-11-17 Allan P Whittemore Machine for cutting sheet-glass.
US2557447A (en) * 1948-11-22 1951-06-19 Augustine J Masi Pen holding attachment for engraving machines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5094134A (en) * 1990-06-08 1992-03-10 Roland Dg Corporation Cutting pen
US6021574A (en) * 1997-11-05 2000-02-08 Murray, Iii; William W. Scribing tool
US6460257B1 (en) * 1999-03-18 2002-10-08 Thk Co., Ltd. Scribing method and apparatus
US6427357B1 (en) * 1999-08-13 2002-08-06 Thomas W. Piper Spindle mounted marking device for CNC machines
US20050086816A1 (en) * 2002-05-30 2005-04-28 Gunther Siegel Apparatus for writing in metal

Also Published As

Publication number Publication date
CH539842A (de) 1973-07-31
JPS5224895B2 (2) 1977-07-04
DE2239669C3 (de) 1974-07-18
IT968805B (it) 1974-03-20
DE2239669B2 (de) 1973-10-31
SE389997B (sv) 1976-11-29
AT319624B (de) 1974-12-27
FR2152200A5 (2) 1973-04-20
JPS4846425A (2) 1973-07-03
DE2239669A1 (de) 1973-04-19
GB1363560A (en) 1974-08-14

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