US3555686A - Tracing machine - Google Patents

Tracing machine Download PDF

Info

Publication number
US3555686A
US3555686A US821736A US3555686DA US3555686A US 3555686 A US3555686 A US 3555686A US 821736 A US821736 A US 821736A US 3555686D A US3555686D A US 3555686DA US 3555686 A US3555686 A US 3555686A
Authority
US
United States
Prior art keywords
pattern
tool
arm
axis
support
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
US821736A
Other languages
English (en)
Inventor
Leon Raoul Hatem
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3555686A publication Critical patent/US3555686A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
    • B43L13/10—Pantographic instruments for copying, enlarging, or diminishing

Definitions

  • the object of the invention is to provide a device for reproduction of patterns, such as letters of the alphabet, with variation of comparative dimensions and/or of relative angles of portions of the pattern.
  • a pattern-reproducing device comprises a linear guide member, a support movable along the guide member, a first element mounted on the support and rotatable about a first axis normal to a plane conaining the line of movement of the support, said first element having a point of connection respectively for a copying tool or a patternfollower tool at a radius from said rst axis, a second element mounted on the support and rotatable about a second axis normal to said plane, said first and second axes being spaced in said plane both along the direction of movement of the support and normal thereto, said second element having a point of connection respectively for a pattern-follower tool .or a copying tool at a radius from said second axis, and a coupling member pivotably connected to the first' element and to the second element.
  • FIG. 1 is a diagram to show the principle of the device with simple levers
  • ⁇ FIG. 2 is a diagram to explain the operation of a device with two-arm levers
  • FIG. 3 is a plan view of the device
  • FIG. 4 is a perspective view of a similar device, with a pattern and an engraving machine
  • FIGS. 5 and 6 are plan views, on a smaller scale, to show respectively horizontal and vertical increase of a dimension ofthe pattern
  • FIGS. 7 and 8 are plan views, on a similar scale, to show respectively anti-clockwise and clock-wise deformation of a pattern.
  • the line x-x' is ⁇ the axis of transverse movement of a support S along a guide (not shown).
  • a first element OP is pivotable about a first axis O'
  • a second element OQR is pivotable about a second axis O.
  • the point P of the' first element is connected to the point Q of the second element by a coupling member PQ.
  • a pattern-follower tool is mounted at point R, to be moved over a pattern in the shape of a letter E, and a tracing tool is mounted at point P to copy the pattern.
  • the ratio of the lengths OR to OQ is made as three to two, and the ratio of the lengths OQ to OP is also made as three to two.
  • a carriage G is movable along a guide rail xx'.
  • An arm ABC is pivoted at B on a rigid arm H fixed to the carriage G, so that the lengths AB/BC represent Patented Jan. 19, 1971 rice the desired ratio of the respective heights of a pattern and of a resultant copy.
  • An arm FED is pivoted at E' on a rigid arm J fixed to the carriage G and the lengths FE and ED are equal, whilst the lengths BC and ED have the same desired ratio mentioned above.
  • a coupling arm CD is pivoted at C on the arm ABC and at D on the arrn FED.
  • the arms ABC and FED are substantially parallel to the rail xx', and the coupling arm CD is substantially perpendicular to the arms ABC and FED.
  • the horizontal strokes made by the copying tool at F are of the same length, whereas the vertical strokes are reduced by the ratio ED divided by BC. If the pattern-follower tool is placed at F and the copying tool at A, then the inverse ratio is obtained.
  • the device introduces a curvature into thev vertical line reproduced, but the degree of curvature is negligible.
  • FIG. 3 shows theI device having a cylindrical guide rail 1 fixed on a base (not shown).
  • a carriage 2 is mounted movably on the rail 1 by supporting rollers 3 and 7, and lateral guiding rollers 4, 5 and 6, the roller 6 lbeing adjustable by means .of an eccentric, for taking up play.
  • Arms 8 and 11 arer secured rigidly to the carriage 2 by means of respective finger nuts 10 in slot 9 and 13 in slot 12.
  • a slide 17 is pivoted at 18 on the arm 8 and receives slidably an arm 14 Iwhich can be locked by a screw 33 in a slot 16.
  • the arm 14 receives at 15 a pattern-follower tool such as a needle.
  • Arm 14 is pivoted at 31 to a slide 19 in which a transverse coupling bar 20 can be locked by a finger nut 22 in slot 21.
  • the bar 20 is pivoted at 30 on a slide 2-8 securable to an arm 23 by a finger nut 29 in a slot 25.
  • a slide '26 is pivoted at 3-2 on the arm 11, and receives slidably the arm 23 securable by a finger nut 27.
  • the arm 23 carriesf the tracer tool such as a graving instrument, at L24, orIis coupled at 24 to a pantograph or other control device for an engraving machine. Finger nuts 10, 13 and 22can be released to permit adjustment of the separation of the arms 14 and 23 with -respect to each other and the iail 1.
  • Screw 33 and finger nut 277 can be released to permit adjustment of the slides 17 and 26 along their respective arms, for altering the reproduction ratio.
  • FIG. 4 shows a similar device in perspective, the pattern-follower tool v15a being moved along the subject letter A, and instead of a tracer tool the point 24a is connected through a linkage L, Iwhich might be a pantograph (not shown), to a graving machine tool T.
  • FIG. 5 illustratesereduction of height of a subject letter E whilst keeping the width the same.
  • IFIG. 6 illustrates inversion of the device to permit increase ot the height of a subject letter A whilst keeping the width the same.
  • FIGS. 7 and 8 show that, if the device is set up with the transverse coupling bar 20 not initially at a right angle to the rail 1, the resultant letter M is deformed anti-clockwise (FIG. 7), or clockwise (FIG. 8).
  • the device may be constructed in mirror-image manner it it is desired to position it to the right-hand side of the pattern, instead of to the left-hand side as shown in FIGS. 4 and 5.
  • a pattern reproducing device comprising:

Landscapes

  • Transmission Devices (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Machine Tool Copy Controls (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
US821736A 1968-05-08 1969-05-05 Tracing machine Expired - Lifetime US3555686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR150908 1968-05-08

Publications (1)

Publication Number Publication Date
US3555686A true US3555686A (en) 1971-01-19

Family

ID=8649934

Family Applications (1)

Application Number Title Priority Date Filing Date
US821736A Expired - Lifetime US3555686A (en) 1968-05-08 1969-05-05 Tracing machine

Country Status (6)

Country Link
US (1) US3555686A (it)
CH (1) CH494651A (it)
DE (1) DE1924218A1 (it)
ES (1) ES366956A1 (it)
FR (1) FR1574836A (it)
GB (1) GB1204299A (it)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131999A (en) * 1973-09-17 1979-01-02 Lew Hyok S Vari-scale-style scriber
US4397090A (en) * 1981-09-29 1983-08-09 Raymond Nicyper Reproportioning graphical pantograph
US4435903A (en) 1981-08-24 1984-03-13 Warner Philip E Left-handed letterer
USD902310S1 (en) * 2019-06-18 2020-11-17 Fiskars Finland Oy Ab Alignment tool
USD917615S1 (en) * 2019-11-26 2021-04-27 Nomis Llc Marking tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117325A (en) * 1981-11-10 1983-10-12 Elite Engineering Limited Apparatus for making projection slides without using photographic means

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131999A (en) * 1973-09-17 1979-01-02 Lew Hyok S Vari-scale-style scriber
US4435903A (en) 1981-08-24 1984-03-13 Warner Philip E Left-handed letterer
US4397090A (en) * 1981-09-29 1983-08-09 Raymond Nicyper Reproportioning graphical pantograph
USD902310S1 (en) * 2019-06-18 2020-11-17 Fiskars Finland Oy Ab Alignment tool
USD917615S1 (en) * 2019-11-26 2021-04-27 Nomis Llc Marking tool

Also Published As

Publication number Publication date
ES366956A1 (es) 1971-03-16
GB1204299A (en) 1970-09-03
CH494651A (it) 1970-08-15
FR1574836A (it) 1969-07-18
DE1924218A1 (de) 1969-11-20

Similar Documents

Publication Publication Date Title
US3555686A (en) Tracing machine
US2553026A (en) Drawing appliance
US3422537A (en) Computing perspective drafting machine
GB1159570A (en) Improvements in or relating to the Manufacture of Photolithographic Structures
US1883204A (en) Signature machine
US3338766A (en) Recording and reproducing the shape of three-dimensional objects by contour lines
US1943205A (en) Pantographic map drawing apparatus
US2497013A (en) Pantograph
US2855677A (en) Reproducing machine for patterns or images
US3067517A (en) Machine for making mechanical drawings
GB1339703A (en) Micro-image display apparatus
US2656604A (en) Machine for reproducing patterns or images
US1229111A (en) Pantographic apparatus.
US4397090A (en) Reproportioning graphical pantograph
US1617632A (en) Drawing machine
US3290783A (en) Reproducing apparatus
US3775852A (en) Reverse image pantographic apparatus
US3686763A (en) Arrangement in ruling machine
GB1343795A (en) Apparatus for drafting an exact axonometric projection directly from a multi-view orthographic projection
US1854832A (en) Support
US2645853A (en) Marking instrument
US2144639A (en) Scaling mechanism
US2898680A (en) Duplicating device
US2891315A (en) Devices for effecting controlled variations of geometrical forms and other shapes
US2351452A (en) Pantograph