US3878614A - Drawing board fitment - Google Patents

Drawing board fitment Download PDF

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Publication number
US3878614A
US3878614A US274791A US27479172A US3878614A US 3878614 A US3878614 A US 3878614A US 274791 A US274791 A US 274791A US 27479172 A US27479172 A US 27479172A US 3878614 A US3878614 A US 3878614A
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US
United States
Prior art keywords
rollers
pair
rails
carriage
rail
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
US274791A
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English (en)
Inventor
Andre Bruneau
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Individual
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Individual
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Publication date
Priority claimed from FR7128510*A external-priority patent/FR2147536A5/fr
Application filed by Individual filed Critical Individual
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Publication of US3878614A publication Critical patent/US3878614A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • B43L13/02—Draughting machines or drawing devices for keeping parallelism
    • B43L13/04—Guides for rulers
    • B43L13/045—Guides for rulers with carriages
    • 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
    • B43L13/02—Draughting machines or drawing devices for keeping parallelism
    • B43L13/04—Guides for rulers

Definitions

  • a drawing board includes at least one arm having a longitudinal channel like track defined between a pair of spaced apart parallel rails and a third rail parallel to and facing said pair of rails, the rails being disposed in the configuration of an acute angled triangle.
  • a car riage. carrying either a second arm, or carrying a drawing head, adapted to roll along said track includes two pairs of first rollers spaced along the carriage.
  • At least one third roller which may also be adjustable by means of an eccentric mounting is mounted on the carriage, preferably between the two pairs of first rollers, so as to roll on the other of said pair of rails, whereby loads on the carriages are distributed on the three rails by the triangular configuration.
  • the invention relates to drawing boards and is particularly concerned with drawing board fitments for movably supporting a drawing head or instrument guide. for example. over the drawing board surface.
  • Such fitments may include a horizontal arm. secured to the drawing board. along which a carriage is movably mounted. said carriage carrying a second arm. perpendicular to the first. a drawing head" being slidably movable along the second arm.
  • the horizontal arm includes a longitudinally dis posed channel-like guide rail in which a plurality of rollers of the carriage are mounted.
  • a drawing board fitment comprises carriage means including a carriage movably mounted along at least one elongate rectilinear arm.
  • said arm including a longitudinal channeHike track defined between a pair of rails extending in parallel spaced-apart relationship and a third rail parallel to and in spaced-apart facing relationship to said pair of rails.
  • said carriage including two pairs offirst rollers. the first rollers of each pair being axially spaced apart and rotatably mounted about parallel spaced-apart axes on spin dles secured on a common carrying axle rotatably mounted on the carriage. said spindles being parallel to their carrying axle with at least one of said spindles eccentric to the carrying axle.
  • the carrying axles of said two pairs of first rollers being disposed parallel to one another and spaced apart along said carriage.
  • said carrying axles each being adjustable by rotation relative to the carriage to an operative position in which one of each pair of first rollers is in rolling contact with said one of said pair of rails and the other of each pair of first rollers is in rolling contact with said third rail, and at least one second roller rotatably mounted on the carriage about an axis parallel to or substantially parallel to the carrying axles and spindles of said pairs of first rollers.
  • said second roller being adapted when said pairs of first rollers are in said operative position to be in rolling contact with the other of said pair of rails.
  • FIG. 1 is a schematic plan view of a drawing board incorporating a fitment according to the invention
  • FIGS. 2 and 3 are enlarged scale schematic plan views of the two carriages of said fitment fitted in their respective arms;
  • FIG. 4 is a cross-section taken along any of lines IVIV of FIG. 2 or of FIG. 3;
  • FIG. 5 is a cross-section taken along any of lines V-V of FIG. 2 or of FIG. 3;
  • FIG. 6 is a view similar to FIG. 4 ofa varied embodiment
  • FIG. 7 is a schematic underneath view of one of the carriages of this varied embodiment.
  • FIG. 8 is a schematic view ofa detail of FIG. 7.
  • FIG. 9 is a schematic view taken in cross-section through a varied type of rail-forming section.
  • a drawing board I carries on its upper horizontal edge a horizontal guide arm 2 including a longitudinal channel-like track along which a carriage 3 is movably mounted.
  • Carriage 3 in integral with a second arm 4. disposed perpendicular to arm 2, and which also includes a longitudinal channel-like track along which a carriage 5 is movably mounted.
  • Carriage 5, which carries an L- square I I pivotally mounted about a conventional head 10. is connected to a counterweight 7 by an endless cable 6, 60 passing about a pulley 8 on carriage 3 and a pulley 9 at the lower free end of arm 4.
  • Guide arm 4 is composed of a section including two longitudinally extending housings l2 and 13 separated by a common vertical wall l2a.
  • Housing 12. of generally rectangular or square cross-section. receives the counterweight 7 which is of similar cross-sectional shape.
  • Housing 13 is of generally U-shaped crosssection. formed by a base part I30 coplanar with the adjacent wall 121; of housing 12. and two arms of unequal length. the longer arm being formed by wall 12a. and the shorter arm by an overhanging outer wall 13b.
  • Housing I3 has an oblique opening 14 through which a support plate 45 of the corresponding carriage extends.
  • Housing 13 includes three longitudinally extending rails. namely a pair of spaced apart parallel rails 18 and 19 on wall l2u. and a third rail 20 on wall 13b. rail 20 being parallel to and in spaced-apart facing relationship to rails 18 and 19.
  • Arm 2 is of identical construction to arm 4. or at least includes an identical housing 13 with three rails l8. l9 and 20.
  • each of carriages 3 and 5 includes two pairs of rollers l5/l6 spaced apart along the carriages. said rollers being adapted in the operative position shown in FIG. 4 to be in rolling contact with rails I8 an 20 respectively.
  • Each pair of rollers 15. I6 is rotatably mounted by means of ball bearings 22, 220 about parallel spacedapart spindles 25, 26 respectively. which spindles are secured on either side of a common carrying axle 23 having a bearing surface 24 rotatably mounted in a bearing 45a of support plate 45.
  • Spindle 26 of roller [6 is concentric to the axis of the axle 23, whereas spindle 25 is eccentric to this axis.
  • the outer ends of spindles 25 and 26 are threaded and receive nuts 29 and 27 respectively which hold ball bearings 22, 22a and rollers l5, 16 in place.
  • Axle 23 includes a flange 28 which bears against the upper surface of support 45 so that. together with the action of ball bearing 22 via a washer on the lower surface of support 45. any axial movement of axle 23 relative to plate 45 is prevented.
  • axle 23 can be rotated in bearing 45a and locked in a chosen position by tightening nut 29. It is thus possible to adjust the pressure of rollers l5. 16 against rails 18, 20 whereby rollers l5 and 16 can be accurately set for rolling contact with their respective rails.
  • Rollers I5 and 16 include. on their facing edges. side flanges 52, 53 respectively, said flanges coming to bear against upper and lower edges of their respective rails l8 and 20 so as to immobilize the carrying axles 23. and hence the carriage, in the axial direction of axles 23.
  • roller 17 is adapted. when rollers and 16 are in the operative position shown in FIG 4. to come into rolling contact with rail 19.
  • Roller 17 is rotatably mounted. by means of a ball bearing 47, on a spindle 46 eccentric to the axis 50 of a carrying axle 44 with a cylindrical bearing surface 43 by means of which it is rotatably mounted in a bearing 45b of plate 45.
  • Ball bearing 47 and roller 17 are secured on spindle 46 by means of a nut 49, whilst the axle 44 is rotatably secured in bearing 45b of plate 45 by means ofa nut 48.
  • a flange 28' of axle 44 preventing any axial movement thereof.
  • roller 17 on rail I9 can thus be adjusted by turning axle 44 in its bearing 45b. and securing it in a desired position by tightening nut 48.
  • Carriages 3 and 5 each include two pairs of longitudinally spaced-apart pair of rollers 15, I6 between which are placed two rollers 17 for carriage 3 and one roller 17 for carriage 5, the carying axles 23 and 44 of these rollers are being disposed parallel to one another.
  • Each roller 17 together with a pair of rollers l5, 16, provides a distribution of the frictional and bearing forces ofthe rollers on their rails in a triangular configuration, which enabies the respective carriage to be held without play in relation to its arm.
  • FIG. 6 shows a varied embodiment of the housings l2, l3 ofan arm 4, and a corresponding varied embodiment of the pair of rollers. donoted by l5, 16', which include a generally V- or channel shaped peripheral profile adapted to engage over rails 18. 20' of corresponding shape and which provide a reaction on the rollers according to arrows 30.
  • FIGS. 7 and 8 schematically show a carriage 5 adapted to cooperate with an arm 4 of the type shown in FIG. 6.
  • Carriage 5 is connected by two parts 6 and 6a of a cable joined to a counterweight 7 (not shown), as schematically indicated in FIG. I.
  • the end of part 6a is secured to a fixed stud, whilst part 6 has at its end a ball-like member 34 which is housed in a recess in a drum 3] about which the cable winds.
  • Drum 31 is integral with a toothed wheel 32 controlled by an endless screw 33 provided with a driving profile 35 accessible from the under side of carriage S to enable adjustment of the tension of cable 6, 6a.
  • a support roller 17' shown in dotted lines in FIG. 7, is disposed intermediate of the pairs of rollers l5'/l6' along carriage 5 and is adapted to bear against a flat rail 19' formed on wall 12a (FIG. 6).
  • the profile of arm 4 (FIG. 6) is designed to envelop all ofthe moving parts (i.e. rollers and cables, with the exception, of course, of the carriage body), and includes: housings l2 and 13; a passage-way 36 between arms 13a and 13b for a remmote remote locking device for carriage 3; a trapezoidal groove 37 outside the vertical outer wall 12c of housing 12 and a trapezoidal groove 38 below the lower wall 12a of housing 12.
  • These grooves 37, 38 which are generally perpendicular to one another, serve for housing support bars for rigidly connecting arm 4 to carriage 3.
  • groove 38 can have a support roller fitted therein, for easing the movement of arm 4 over board 1.
  • Special grooves 39 and 40 respectively at the lower edge of groove 37 and adjacent passage-way 36 are provided for fitting end-caps so as to close the ends of arm 4.
  • the described profile of arm 4 can be extruded in indefinite lengths. and cut to the required dimensions of a drawing board.
  • FIG. 9 is a cross-section through a varied form of profile of arm 4, schematically showing the positions occupied by a set of rollers l5". l6". 17" which, in this example. are carried on a common axle, the axes of rol' lers l5" and 17" coinciding with the axis about which the carrying axle is pivoted. and the axis of roller 16" being eccentric thereto. Two, or possibly more, of such sets of rollers would be spaced along each carriage.
  • the median lines of rails l8, l9 and 20 are disposed in the configuration of an isosceles triangle, which distributes the loads acting on the carriage during rolling.
  • the three rails can have various relative dispositions. Although the median lines of the rolling tracks of the rails are disposed in the general configuration of an acute angled triangle.
  • rail 19 (19) is spaced apart from rail 20 (20') along a direction generally perpendicular to the facing rails by a greater distance than is rail 18 (18); also. a part of rail 19 (19') is perpendicularly in face with a part of rail 20 (20').
  • Drawing board fitment comprising at least one elongated rectilinear arm.
  • said arm including a pair of rails extending in parallel spaced apart relationship and a third rail parallel to and in spaced-apart facing rela tionship to said pair of rails defining a longitudinal channel-like track therebetween, a carriage movably mounted along said arm including two pairs of first rollers, means rotatably mounting the rollers of each pair in an axially spaced-apart relationship about parallel spaced-apart axes including a common carrying axle rotatably mounted on the carriage and spindles mounted parallel to the carrying axle with at least one of said spindles eccentric with respect to the carrying axle, wherein the carrying axles of said two pairs of first rollers are disposed parallel to one another and spacedapart along said carriage and each being adjustable by rotation relative to the carriage to an operative position in which one roller of each pair of first rollers is in rolling contact with one rail of said pair of rails and the other roller of each pair of first rollers is in rolling contact with said
  • said means mounting said second roller comprises a carrying axle rotatably mounted on the carriage and a spindle secured eccentrically on same.
  • first rollers each include at least one side flange. said side flanges of each pair of first rollers being disposed on their respective rails so as to prevent movement of the carrying axles in the axial direction thereof.
  • Drawing board fitment comprising first and second rectilinear arms respectively having first and second carriages slidably mounted therealong.
  • said first arm being secured to a drawing board, said first carriage including two second rollers placed symmetrically between the two pairs of first rollers thereof.
  • said first carriage carrying said second arm disposed at right angles to said first arm, and said second carriage including one second roller placed equidistantly between the two pairs of first rollers thereof.

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  • Structure Of Telephone Exchanges (AREA)
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  • Bearings For Parts Moving Linearly (AREA)
US274791A 1971-07-28 1972-07-24 Drawing board fitment Expired - Lifetime US3878614A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7128510*A FR2147536A5 (enrdf_load_stackoverflow) 1971-07-28 1971-07-28
FR7211547A FR2178435A6 (enrdf_load_stackoverflow) 1971-07-28 1972-03-31

Publications (1)

Publication Number Publication Date
US3878614A true US3878614A (en) 1975-04-22

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ID=26216555

Family Applications (1)

Application Number Title Priority Date Filing Date
US274791A Expired - Lifetime US3878614A (en) 1971-07-28 1972-07-24 Drawing board fitment

Country Status (10)

Country Link
US (1) US3878614A (enrdf_load_stackoverflow)
JP (1) JPS514129B1 (enrdf_load_stackoverflow)
BE (1) BE786898A (enrdf_load_stackoverflow)
CA (1) CA975158A (enrdf_load_stackoverflow)
CH (1) CH562703A5 (enrdf_load_stackoverflow)
FR (1) FR2178435A6 (enrdf_load_stackoverflow)
GB (1) GB1342230A (enrdf_load_stackoverflow)
IT (1) IT968204B (enrdf_load_stackoverflow)
NL (1) NL153131B (enrdf_load_stackoverflow)
NO (1) NO134737C (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244628A (en) * 1980-03-14 1981-01-13 Nl Industries, Inc. Guide roller assembly
CN105599504A (zh) * 2016-03-03 2016-05-25 付俊 带滚动棒的三角板
US20160242361A1 (en) * 2015-02-13 2016-08-25 Cornelis Hendricus Liet Material handling device for separating feed for livestock
US11215224B2 (en) * 2020-04-01 2022-01-04 Punching Concepts, Inc. Rolling apparatus with profiled V-guide

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2040480B (en) * 1978-12-23 1984-06-27 Mutoh Ind Ltd Rail-type parallel drafting device
IT1192420B (it) * 1982-05-10 1988-04-13 Heron Parigi Sdf Di Parigi Gio Tecnigrafo parallelo per la rapida esecuzione di tracciati paralleli per mezzo di una grande riga fissata a sbalzo su un carrello scorrevole sopra una guida posta da un solo lato del piano da disegno

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2160186A (en) * 1938-11-14 1939-05-30 Benjamin H Williams Drafting mechanism
US3047954A (en) * 1958-12-08 1962-08-07 Vard Products Inc Track type drafting machine
US3093424A (en) * 1960-10-14 1963-06-11 Pernetta Charles Rectilinearly guided members
US3673691A (en) * 1969-12-11 1972-07-04 Ray And Gilbert Proprietary Lt Drafting machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2160186A (en) * 1938-11-14 1939-05-30 Benjamin H Williams Drafting mechanism
US3047954A (en) * 1958-12-08 1962-08-07 Vard Products Inc Track type drafting machine
US3093424A (en) * 1960-10-14 1963-06-11 Pernetta Charles Rectilinearly guided members
US3673691A (en) * 1969-12-11 1972-07-04 Ray And Gilbert Proprietary Lt Drafting machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244628A (en) * 1980-03-14 1981-01-13 Nl Industries, Inc. Guide roller assembly
US20160242361A1 (en) * 2015-02-13 2016-08-25 Cornelis Hendricus Liet Material handling device for separating feed for livestock
US10609870B2 (en) * 2015-02-13 2020-04-07 Cornelis Hendricus Liet Material handling device for separating feed for livestock
CN105599504A (zh) * 2016-03-03 2016-05-25 付俊 带滚动棒的三角板
US11215224B2 (en) * 2020-04-01 2022-01-04 Punching Concepts, Inc. Rolling apparatus with profiled V-guide

Also Published As

Publication number Publication date
FR2178435A6 (enrdf_load_stackoverflow) 1973-11-09
NL7210493A (enrdf_load_stackoverflow) 1973-01-30
BE786898A (fr) 1972-11-16
NO134737B (enrdf_load_stackoverflow) 1976-08-30
NL153131B (nl) 1977-05-16
NO134737C (enrdf_load_stackoverflow) 1976-12-08
JPS514129B1 (enrdf_load_stackoverflow) 1976-02-09
CA975158A (en) 1975-09-30
DE2236753A1 (de) 1973-02-22
IT968204B (it) 1974-03-20
DE2236753B2 (de) 1976-12-23
CH562703A5 (enrdf_load_stackoverflow) 1975-06-13
GB1342230A (en) 1974-01-03

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