US3559574A - Clamp for securing an ink tube to a printing press ink pump - Google Patents

Clamp for securing an ink tube to a printing press ink pump Download PDF

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Publication number
US3559574A
US3559574A US801006A US3559574DA US3559574A US 3559574 A US3559574 A US 3559574A US 801006 A US801006 A US 801006A US 3559574D A US3559574D A US 3559574DA US 3559574 A US3559574 A US 3559574A
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US
United States
Prior art keywords
ink
nozzle
jaw
movement
feeler
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
US801006A
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English (en)
Inventor
Albert George Ronald Gates
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.)
NRG Manufacturing Ltd
Original Assignee
NRG Manufacturing Ltd
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Filing date
Publication date
Application filed by NRG Manufacturing Ltd filed Critical NRG Manufacturing Ltd
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Publication of US3559574A publication Critical patent/US3559574A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices

Definitions

  • the present invention provides an improvement relating to printing apparatus and more particularly relates to an improved clamping device for securing an ink tube to printing apparatus.
  • an ink tube is intended to represent an ink reservoir of the type comprising a collapsible container having a nozzle which is intended to be pulled firmly into engagement with an ink duct or pipe along which ink is to be sucked from the container by the ink pump of the apparatus.
  • a device for clamping an ink tube in relation to an ink supply passage of printing apparatus comprising an ink conduit communicable with said ink supply passage; an open sided jaw axially slidable with respect to said ink conduit and provided with an inwardly extending rib for engaging the underside of an ink tube nozzle and a nozzle access passage for permitting lateral sliding of a nozzle into a position on said jaw coaxial with said ink conduit; means for effecting clamping movement of said jaw axially towards the ink conduit; and a feeler member arranged to sense the presence of an ink tube not fully inserted into the jaw, said feeler member being effective either to move the ink tube into the fully inserted position or to prevent further movement of the jaw towards its fully clamped position until the partly inserted ink tube has been sufficiently inserted into the jaw.
  • the feeler member may be mechanically linked to a clamp operating lever whereby movement of the clamp operating lever to a clamping position will effect tube sensing movement of the feeler member across the mouth of the nozzle access passage.
  • the clamp operating lever may be arranged for camming engagement with the axially slidable jaw to effect upward sliding movement of the jaw upon movement of the clamp operating lever in an appropriate direction.
  • the feeler member and the clamp operating lever may be formed as an integral structure.
  • the clamp operating lever and the jaw may be linked by a camming mechanism comprising a cam plate pivotally mounted with respect to the body of the ink pump and provided with an arcuate slot which has its concave side facing the axis of pivoting of said cam plate and is arranged so that the ends of the slot are differently spaced from the pivoting axis, said clamp jaw having a guide member projecting snugly into the arcuate slot whereby pivotal movement of the cam plate causes movement of said guide member towards or away from the axis of pivoting and results in movement of the slidable jaw.
  • the guide member may comprise a screw engaged in the threaded recess in the wall of the sliding jaw, such screw having a head larger than the transverse dimension of said slot.
  • the feeler member may comprise a lever pivotally mounted on the axially slidable jaw and driven by abutting engagement with the clamp operating lever to pass across the tube access passage as the clamp operating lever is pivoted.
  • the feeler lever may suitably be of L-shaped form and pivoted at the free end of one of the limbs, the other limb of the L constituting the feeler, and the first mentioned limb of the L being provided with an arcuate extension which, when assembled together with the remainder of the device, is arranged to lie above the comer of the L and to cooperate with the clamp operating lever to provide a camming engagement for effecting sensing movement of the feeler.
  • FIG. I is a side elevational view of an ink pump of a stencil duplicator, the pump of which incorporates the clamp of the present invention here shown in the closed position;
  • FIG. 2 is a view, similar to FIG. 1, but showing the clamp in the open position, the remainder of the components of the pump being omitted;
  • FIG. 3 is an underneath plan view of the ink tube clamp shown in the FIG. 2 position
  • FIG. 4 is a perspective view of a second embodiment of clamp of this invention. showing the clamp in the open condition.
  • FIG. 5 is a view similar to FIG. 4, but showing the clamp in closed condition.
  • an ink pump comprising a pump body I having a downwardly extending clamp support 2 which carries a pivotally movable slotted cam plate 3 having an operating lever 4.
  • An arcuate slot 5 in the cam plate has a screw 6 extending therethrough and threadedly received in a vertically movable clamp body 7 which is reciprocatable longitudinally of the ink inlet duct 8, extending downwardly from the clamp support 2.
  • the lower wall of the clamp body 7 includes a clamping flange 11 having an upper surface 10 which bears against a suitably formed bearing surface on the underside of an ink tube nozzle.
  • the cam plate 3 is mounted on the clamp support 2 by means of a laterally extending boss 9 formed on the back surface of the cam plate 3, and engaging in a suitably formed recess in the front wall of the clamp support 2.
  • the curvature of the slot 5 is such that the distance of the axis of the boss 9 from the point A at one end of slot 5 is greater than the distance between the axis of the boss 9 and point B at the opposite end of the arcuate slot (see FIG. 2) thus, upon anticlockwise rotation of the cam plate 3 from the FIG. 1 position the screw 6 fitting snugly within the slot 5 is caused to descend, carrying with it the clamp body 7.
  • FIG. 2 shows the lowered position of the clamp body 7 in which the operating lever 4 of the cam plate is in its raised position.
  • the clamp body 7 has descended relatively to the ink duct 8 so that the clearance between the lower end of the duct 8 and the upper surface 10 of the clamping flange 11 is greater than was the case in FIG. 1.
  • the screw 6 has a comparatively large diameter flat head 60 which bears inwardly against a strip steel spring 12 disposed substantially parallel to the plane of the cam plate 3 and having at one end a tongue 13 which engages within a slot formed in a lug 14 formed on the pump body.
  • the spring 12 serves both to retain the cam plate 3 in position on the clamp support by preventing movement of the cam plate away from the surface of the clamp support, but also the spring is formed in a slightly bowed configuration so that the center of the spring is displaced from the plane joining the ends of the strip 12, so that the central part of the spring bears firmly against the front of the cam plate and exerts a frictional force resisting rotation of the cam plate 3.
  • the screw 6 has a shank which has a wider diameter portion near the head, such portion engaging snugly within the slot 5, but the free end of the shank is of a reduced diameter and has threads formed thereon for engagement in a suitably formed threaded recess in the clamp body 7.
  • the cam plate 3 is also provided with an extension 16 having a perpendicularly extending lug 17 which, as shown in FIGS. 2 and 3, forms a continuation of the lateral all 18 of the nozzle-receiving recess formed in the clamp body, the edge 15 between the cam plate extension 16 and the lug 17 being radiused as shown in FIG. 3.
  • This lug thereby provides a means of guiding the nozzle of an ink tube into position within the nozzle receiving recess. and when the control lever 4 is moved downwardly to its FIG. 1 position the lug l7 and the extension 16 pass across the opening of the nozzle receiving recess and push the nozzle of an Ink tube in the aperture firmly into position in which the ink tube nozzle is concentric with the lower end of the ink duct 8.
  • the nozzle of an ink tube is also urged upwardly by engagement of the bearing surface on the underside of the nozzle with the nozzle bearing wall of the flange 11, the nozzle of the tube thereby being urged against the lower end of the ink duct 8.
  • Conventional ink tubes are provided with a resilient washer set into the upper wall of the nozzle, this washer providing a seating against which the lower face of the ink duct 8 can engage and bear in order to provide an airtight seal between the ink tube and the ink duct 8.
  • control lever 4 is moved to its raised position in which the clamp body 7 is lowered and the clearance between the lower wall of the ink duct 8 from the upper bearing face 10 of clamping flange 11 is at a maximum.
  • the lug 17 forms a continuation of the sidewall 18 of the nozzle receiving recess.
  • the noule of a full ink tube to be inserted in the machine is then guided along the leftward laterally facing surface of the lug 17 and along the sidewall 18 of the recess until it is in position within the nozzle-receiving recess so that the nozzle is coaxial with the ink duct 8.
  • control lever 4 may be moved downwardly so that the rear wall of the extension 16 of the cam plate 3 is able to pass across the front of the nonlereceiving recess and move clockwise into the FIG. 1 position.
  • clamp body 7 is at its highest point and the bottom of the ink duct 8 is urged firmly into engagement with the resilient washer of the ink tube nozzle.
  • the ink pump may then be operated and ink drawn from the ink tube up into the inking mechanism of the duplicaton,
  • control lever 4 In the event of such jamming of the ink tube nozzle the control lever 4 must be raised to free the noule and then the nozzle should be pushed laterally into the correct position in which it is coaxial with the ink duct 8. Once the tube has been pushed into the correct position the control lever 4 may then be lowered thus raising the clamping body 7 to hold the full ink tube in position in the duplicator.
  • the clamp of the present invention is advantageously of die cast construction so that the clamp body 7 and the clamp support 2 are separately cast components.
  • the ink duct 8 is mounted within the clamp support 2 by any suitable means and is fixed with respect thereto.
  • control lever 4 cam plate 3 and extension 16 together with its lug 17 is advantageously moulded of a plastics material.
  • this choice of materials for the various components of the clamp is preferable and is not intended to limit the invention in any way.
  • FIG. 4 shows a perspective view of an alternative form of ink tube clamp comprising a clamp operating lever 21 pivoted by means of two screws 20 engaging in the upper part of the clamp body and passing freely through respective ears 22 of the clamp operating lever 21.
  • the lower parts of the ears 22 are provided with recesses 5' on their inner faces, similar to the slot 5 of the previous embodiment and engaging with suitable pegs 6 formed on the slidable lower clamp member or jaw 24.
  • a blanking lever 23 is pivotally mounted by means of a screw 25 to the front of the lower slidable clamp member so as to be able to swing across the front access aperture of the slidable clamp body.
  • the lever 23 is of L-shape having a rounded edge 26 to force home an ink reservoir tube which might have been inadvertently only half inserted in the aperture before operation of the clamping mechanism.
  • the corner 27 of the L is, in the open position of FIG. 4 disposed directly below the lower edge 28 of the associated car 22 of the clamp operating lever.
  • the blanking lever 23 is provided with an arcuate upper extension 29 having a tip 29' which lies above the upper edge 30 of the associated ear 22.
  • the arcuate extension 29 is also provided with a transversely extending peg 31 shown more clearly in FIG. 5 as being able to cooperate with an aperture 32 formed in the clamp operating lever 21.
  • FIGS. 4 and 5 has the added advantage that unlike the embodiment of FIGS. 1 to 3 the second embodiment has no requirement for access of an operators hand to the side of the device.
  • a device for clamping an ink tube having an outlet nozzle provided with projecting means having an underside in relation to an ink supply passage of printing apparatus comprising in combination:
  • ink conduit means communicable with said ink supply passage
  • open sided jaw means axially slidable with respect to said ink conduit between a clamping position and a releasing position
  • nozzle access passage means permitting lateral sliding of said ink tube nozzle into position on said jaw means coaxial with said ink conduit;
  • movable feeler means for sensing the presence of said ink t-ube when not fully inserted into the jaw means, said feeler means being coupled to said jaw moving means to prevent movement of the jaw means into fully clamped position when the ink tube nozzle is not fully inserted.
  • the nozzle access passage means has at least one wall for guiding the nozzle during insertion thereinto, and wherein said feeler means comprises guide surface means thereon to form a continuation of said nozzle access passage means wall when said jaw means are in said releasing position.
  • a device including abutment means formed on said feeler means for pushing home said nozzle when said nozzle is in a partly inserted position with relation to said jaw means.
  • said jaw moving means comprises a clamp operating lever movable between a clamping position and a releasing position and mechanically linked to the feeler means whereby movement of the clamp operating lever to said clamping position will effect tube sensing movement of the feeler means across the mouth of the nonle access passage means.
  • the feeler means comprises a lever pivotally mounted on the axially slidable jaw means and drivable by abutting engagement by the clamp operating lever to pass across the tube access passage means moment on the blanking lever. However. by this time the peg l as the clamp operating lever is pivoted between the clamping and releasing positions.
  • feeler lever is of L-shaped form comprising:
  • a device including an ear formed on said clamp operating lever means for abutting engagement with said first limb for camming movement towards said clamping position and for abutting engagement with said arcuate extension for camming movement towards the releasing position.
  • a device including:
  • a device including cam means connected between the clamp operating lever means and the axially slidable jaw means. for effecting upward sliding move ment of the jaw means upon movement of the clamp operating lever means from the releasing position to the clamping position.
  • a device according to claim 10, wherein said cam means. comprises:
  • a guide member projecting snugly into said arcuate slot whereby pivotal movement of the cam plate causes movement of said guide member towards or away from said axis of pivoting movement and results in movement of the slidable jaw means.
  • said guide member comprises:
  • a device in combination with said printing apparatus which has an ink pump with a body and further including:
  • v. suitably formed aperture means in the pump body slidably receiving the other end of said strip, the strip being bowed whereby the midpoint of the strip is displaced from a plane joining the ends of the strip and the strip being assembled with respect to the cam plate with the midpoint of the strip bearing against the cam plate.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Ink Jet (AREA)
  • Coating Apparatus (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
US801006A 1968-02-22 1969-02-20 Clamp for securing an ink tube to a printing press ink pump Expired - Lifetime US3559574A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8764/68A GB1200821A (en) 1968-02-22 1968-02-22 Improvements relating to printing apparatus

Publications (1)

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US3559574A true US3559574A (en) 1971-02-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
US801006A Expired - Lifetime US3559574A (en) 1968-02-22 1969-02-20 Clamp for securing an ink tube to a printing press ink pump

Country Status (8)

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US (1) US3559574A (enrdf_load_stackoverflow)
JP (1) JPS49449B1 (enrdf_load_stackoverflow)
AT (1) AT299993B (enrdf_load_stackoverflow)
DE (1) DE1908737B2 (enrdf_load_stackoverflow)
DK (1) DK126909B (enrdf_load_stackoverflow)
FR (1) FR2002394A1 (enrdf_load_stackoverflow)
GB (1) GB1200821A (enrdf_load_stackoverflow)
YU (1) YU33565B (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316347A (en) * 1991-07-09 1994-05-31 Massimo Arosio Quick-fitting coupling for simultaneously connecting or disconnecting a plurality of couplings
US20030213736A1 (en) * 2000-05-12 2003-11-20 Hajime Hiranaga Filters
US20030213738A1 (en) * 2000-05-12 2003-11-20 Hajime Hiranaga Filtration systems and fitting arrangements for filtration systems
US20060292016A1 (en) * 2005-06-23 2006-12-28 Graco Minnesota Inc. Reciprocating piston pump serviceable without tools
US20070221583A1 (en) * 2006-01-19 2007-09-27 Ruprecht John C Canter element controlled combination manifold, valve and filter module system
US20110062188A1 (en) * 2008-06-17 2011-03-17 Valois S.A.S. Fluid product dispensing device
US11002261B2 (en) 2016-05-06 2021-05-11 Graco Minnesota Inc. Mechanically driven modular diaphragm pump

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5211147U (enrdf_load_stackoverflow) * 1975-07-11 1977-01-26
JPS5282849U (enrdf_load_stackoverflow) * 1975-12-19 1977-06-21

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2143886A (en) * 1936-12-21 1939-01-17 Kline William Inking device for printing presses
US2143885A (en) * 1936-12-21 1939-01-17 Kline William Inking device for printing presses
US2787216A (en) * 1951-11-16 1957-04-02 Gestetner Ltd Inking mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2143886A (en) * 1936-12-21 1939-01-17 Kline William Inking device for printing presses
US2143885A (en) * 1936-12-21 1939-01-17 Kline William Inking device for printing presses
US2787216A (en) * 1951-11-16 1957-04-02 Gestetner Ltd Inking mechanism

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316347A (en) * 1991-07-09 1994-05-31 Massimo Arosio Quick-fitting coupling for simultaneously connecting or disconnecting a plurality of couplings
US7338599B2 (en) 2000-05-12 2008-03-04 Pall Corporation Filtration systems and fitting arrangements for filtration systems
US20030213736A1 (en) * 2000-05-12 2003-11-20 Hajime Hiranaga Filters
US20030213738A1 (en) * 2000-05-12 2003-11-20 Hajime Hiranaga Filtration systems and fitting arrangements for filtration systems
US7195122B2 (en) 2000-05-12 2007-03-27 Pall Corporation Filters
US9068567B2 (en) 2005-06-23 2015-06-30 Graco Minnesota Inc Reciprocating piston pump serviceable without tools
US20060292016A1 (en) * 2005-06-23 2006-12-28 Graco Minnesota Inc. Reciprocating piston pump serviceable without tools
US20070221583A1 (en) * 2006-01-19 2007-09-27 Ruprecht John C Canter element controlled combination manifold, valve and filter module system
US7651070B2 (en) * 2006-01-19 2010-01-26 Clean & Clear Corporation Canter element controlled combination manifold, valve and filter module system
US20100088873A1 (en) * 2006-01-19 2010-04-15 Clean & Clear Corporation Canter element controlled combination manifold, valve and filter module system
US20110214272A1 (en) * 2006-01-19 2011-09-08 Clean & Clear Corporation Canter element controlled combination manifold, valve and filter module system
US20110062188A1 (en) * 2008-06-17 2011-03-17 Valois S.A.S. Fluid product dispensing device
US8511515B2 (en) * 2008-06-17 2013-08-20 Aptar France Sas Fluid product dispensing device
US11002261B2 (en) 2016-05-06 2021-05-11 Graco Minnesota Inc. Mechanically driven modular diaphragm pump
US11639713B2 (en) 2016-05-06 2023-05-02 Graco Minnesota Inc. Mechanically driven modular diaphragm pump
US11905939B2 (en) 2016-05-06 2024-02-20 Graco Minnesota Inc. Mechanically driven modular diaphragm pump

Also Published As

Publication number Publication date
DE1908737B2 (de) 1970-09-10
GB1200821A (en) 1970-08-05
YU42069A (en) 1976-12-31
DK126909B (da) 1973-09-03
AT299993B (de) 1972-07-10
DE1908737A1 (de) 1969-12-04
YU33565B (en) 1977-08-31
JPS49449B1 (enrdf_load_stackoverflow) 1974-01-08
FR2002394A1 (enrdf_load_stackoverflow) 1969-10-17

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