US3183745A - Thrust bearing means for electronic engraving machines - Google Patents

Thrust bearing means for electronic engraving machines Download PDF

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Publication number
US3183745A
US3183745A US163289A US16328961A US3183745A US 3183745 A US3183745 A US 3183745A US 163289 A US163289 A US 163289A US 16328961 A US16328961 A US 16328961A US 3183745 A US3183745 A US 3183745A
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US
United States
Prior art keywords
lead screw
bore
adapter
bearing means
block
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
US163289A
Other languages
English (en)
Inventor
William J Barron
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.)
Graphic Electronics Inc
Original Assignee
Graphic Electronics Inc
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
Priority to NL279821D priority Critical patent/NL279821A/xx
Application filed by Graphic Electronics Inc filed Critical Graphic Electronics Inc
Priority to US163289A priority patent/US3183745A/en
Priority to GB8452/62A priority patent/GB943526A/en
Priority to DEG34754A priority patent/DE1236938B/de
Priority to AT404662A priority patent/AT241938B/de
Priority to CH677562A priority patent/CH405994A/de
Priority to BE619070A priority patent/BE619070A/fr
Priority to DK364762AA priority patent/DK114949B/da
Application granted granted Critical
Publication of US3183745A publication Critical patent/US3183745A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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—Artist's 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
    • B44B3/001—Artist's 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 by copying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
    • B23Q5/404—Screw bearings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/02—Engraving; Heads therefor
    • B41C1/04—Engraving; Heads therefor using heads controlled by an electric information signal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B2700/00—Machines, apparatus, tools or accessories for artistic work
    • B44B2700/02—Artist's 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
    • B44B2700/021—Artist's 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 by copying
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/1987—Rotary bodies
    • Y10T74/19893—Sectional
    • Y10T74/19898—Backlash take-up
    • Y10T74/19902—Screw and nut
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T82/00—Turning
    • Y10T82/13—Pattern section

Definitions

  • the present invention relates to an electronic engraving machine for making engravings directly from copy. More specifically, the invention relates to an electronically controlled lathe having a lead screw for simultaneously advancing scanning and engraving components, and to thrust bearing means for anchoring the lead screw to the lathe chassis, thereby preventing axial movement of the lead screw when the latter is rotated during an engraving operation.
  • Such machines may comprise a scanning cylinder on which a photograph or other copy is mounted, an engraving cylinder on which a metal or plastic plate to be engraved is mounted, a cutter for engraving the plate, and scanning apparatus for sensing the light reflected from the copy and transmitting electrical impulses proportional thereto to the cutter apparatus, whereby upon rotation of the scanning and engraving cylinders and simultaneous axial advancement of the scanner and cutter along their respective cylinders, the plate will be engraved with lines varying in width according to the tones of the copy.
  • the present invention is based in part on the insight that an electronic engraving machine can be produced using for its basic chassis a standard machine tool lathe, and that a machine can thus be produced at a substantial reduction in cost, which machine will effect results fully comparable to those of the more expensive machines, and in many instances substantially improved results.
  • One of the principal problems encountered in manufacturing an electronically controlled lathe for making engravings is the design of the mechanism for advancing the cutter head axially along the engraving cylinder.
  • a lead screw is commonly provided for advancing the cutter head, but I have found that the normal means for mounting a lead screw as embodied in substantially all machine tool lathes is not satisfactory for the design of an engraving machine.
  • the lead screw is commonly supported axially against one or more mounting blocks, the lead screw having elements integral therewith or secured thereto which bear against the side faces of the mounting blocks during rotation of the screw.
  • one end of the lead screw may be held by being threaded into an adapter shaft which is positioned within a mounting block and has a large diameter end portion which bears against the side face of the mounting block so as to support the lead screw axially.
  • the other end of the lead screw may extend into a mounting block and have Washers or the like keyed thereto which bear against the side faces of the mounting block.
  • substantially all lathes embody a lead screw to advance a carriage member, and the lead screw is supported axially "ice by being fixed with respect to one or more fiat-faced members which rotate with the lead screw and bear against the flat sides of corresponding mounting blocks.
  • the principal object of the present invention is to provide an engraving machine comprising an electronically controlled lathe, suitable for making engravings directly from copy, which embodies thrust bearing means associated with the lead screw and anchored to the body of the lathe for eliminating axial shifting of a lead screw, the latter serving to advance scanning and engraving components of the machine.
  • I provide a mounting block which houses a pair of opposed angular roller hearings in such a manner that said bearings are rigidly held against axial movement within the block.
  • I further provide a pair of rotatable adapted members, each of which bears against a corresponding one of the inner races of the angular roller bearings, and I secure a lead screw to one of said adapter members and secure said members to one another whereby the lead screw is rigidly held against axial movement relative to the mounting block, while being free to rotate and thereby advance a cutter carriage and a scanner carriage associated therewith.
  • the mounting block is firmly anchored to the frame or body portion of my engraving machine.
  • FIGURE 1 is a perspective view of the front portion of an electronically controlled lathe manufactured in accordance with the present invention and suitable for making engravings directly from copy material;
  • FIGURE 2 is an exploded perspective view of elements which comprise thrust bearing means for mounting a lead screw, the bearing means serving to prevent axial shifting of the lead screw as the latter rotates and thereby advances scanning and cutting components associated therewith;
  • FIGURE 3 is a reduced elevational view of a ratchet advance mechanism adapted to be associated with motor means for effecting the desired intermittent rotation of the lead screw; and v 7 FIGURE 4 is an enlarged vertical section illustrating the thrust bearing means and related elements for supporting and driving the lead screw.
  • an electronic engraving machine comprising a base 29, a cylinder axle 22, an engraving cylinder 24, a cutter carriage 26, a cutter head 28, a scanning cylinder 36, a scanner carriage 32, a scanner 34, motor means 36, a lead screw 38, a housing 40 for enclosing a ratchet advance mechanism for connecting the motor means to the lead screw, and thrust bearing means 42 for supporting the lead screw.
  • the motor means 36 is adapted to rotate the axle 22 and the cylinders 24 and 30 mounted thereon, and the ratchet mechanism (to be described more fully hereinafter) is utilized to connect the motor to the lead screw 38 for intermittent rotation of the lead screw, the latter having oppositely formed threads at its two ends whereby upon rotation it will advance the cutter carriage 26 and the scanner carriage 32 towards oneranother.
  • the scanner 34 will scan copy mounted on the scannings cylinder 30 and transmit electrical impulses to the cutter head 28 for engraving a plate mounted on the engraving cylinder 24.
  • FIGURE 3 shows a ratchet mechanism for intermittently rotating the lead screw 38.
  • An eccentric 44 is driven by the motor means 36 so as to reciprocate a connecting rod 46.
  • An adapter shaft 47 is connected to the end of the lead screw 38, and. said shaft has a ratchet wheel 48 keyed thereto and 'a mounting block 49 rotatably carried thereon.
  • a rod 50 has one end secured in the block 49 and has mounted on its other end an arm 52 which carries a pawl 53, the latter being adapted to engage the teeth on the ratchet wheel.
  • the connecting rod 46 is fixed to the rod 58 by a slide connector 54, whereby upon reciprocationof the rod 46 the pawl will, during its clockwise stroke,rotate the ratchet Wheel 48 and the lead screw 38 to which the ratchet wheel is drivingl connected by adapter means.
  • the position of the slide connector 54 can be adjusted along the rod 50 in order to determine the stroke of the pawl 53 and the resultant degree of rotation of the lead screw.
  • FIGURES 2 and 4 illustrate the thrust bearing means 42 for supporting the lead screw 38, and also the adapter means for connecting the lead screw to the ratchet wheel 48.
  • a housing block 56 which is rectangular in cross section and is provided with a bore 53 of relatively large diameter which extends horizontally into the block 56 from the left end thereof and terminates at a peripheral shoulder or ledge 59.
  • the bore 58 communicates with a smaller diameter bore 66 which extends through the remainder of the length of the block 56 to the right end thereof.
  • a stepped adapter shaft 47 has a reduced diameter end portion 62 which terminates at a peripheral ledge or shoulder 64, and a pair of angular roller bearings 66 and 68 are mounted on the portion 62.
  • the roller bearing 66 comprises an inner race 70 which is forced on the shaft 62 so as to bear against the shoulder 64, a cage or retainer 71 for holding a plurality of inclined rollers 72, and an outer race 73.
  • the roller bearing 68 is similar in construction to the bearing 66, but has its rollers oppositely inclined to the rollers '72.
  • the bearing 68 comprises an inner race 74 which is forced on the shaft 62 so as to abut against the end of the inner race 70, the outer end of the race 74 being substantially flush with the end of the shaft 62.
  • the bearing 68 further comprises a cage 76 for retaining a' plurality of inclined rollers 77, and an outer race 78.
  • the adapter shaft 47 with the angular roller bearings 66 and 68 mounted thereon, is partially inserted into the bore 58, the outer diameter of the outer races 73 and 78 being slightly smaller than the bore 58, thus being adapted to'be housed therein.
  • the outer race 78 is positioned within the bore 58 so as to bear against the peripheral shoulder 59, and the shaft 47 with the bearings 66 and 68 mounted thereon is then positioned within the bore 58 so that the rollers 77 bear against the outer race 78.
  • a leather gasket or the like 80 is mounted on the shaft 47 so as to be positioned on an enlarged diameter portion 82 thereof, and a cover plate 84 is secured to the end of the housing block 56 by a plurality of screws 85.
  • the cover plate is provided with a bore 86 dimensioned to accommodate the shaft 47 and the gasket 80.
  • the cover plate 84 has an integral peripheral flange 88 which is received within the bore 58 and bears tightly against the outer race 73 when the cover plate is secured to the block 56.
  • the angular roller bearings are rigidly held against axial displacement, their inner races 70 and 74 being disposed in abutting relation on the shaft portion 62, and the outer races 73 and 73 being supported by the peripheral flange 88 and the shoulder or ledge 59, respectively.
  • the adapter shaft end portion 62 is provided with an axial threaded bore 90, and a stepped adapter shaft 92 has a threaded end'94 of reduced diameter which is screwed into the shaft 62, the end portion 94 terminating at a peripheral shoulder which substantially abuts the inner race 74 and the end of the shaft 62.
  • a leather gasket or the like 98 may be mounted on a portion 100 of the shaft d2 so as to substantially fill the annular space surrounding the shaft'section 100.
  • the right end of the adapter shaft 2 is provided with an axial bore 102 for accommodating the end of the lead screw 38, the lead screw having an end portion 103 of reduced diameter which is received within the bore 102 and secured to the shaft 92 by means of a pair of pins 104 and 105.
  • this member includes a shaft portion 106 which projects outwardly through the cover plate 84, the ratchet wheel 48 being mounted on said shaft and keyed thereto by key means 108.
  • the mounting block 49 which also comprises an element of the ratchet mechanism for rotating the lead screw 38, is rotatably carried on the shaft portion 106 and held thereon by a nut 110 which is threaded onto a reduced diameter end portion 111 of the adapter 47.
  • the mounting block 56 is rigidly secured to the body of the engraving machine by a pair of cap screws 112 'which extend through apertures 114 in the block and into threaded engagement with the body or chassis of the machine, as shown in FIGURE 1.
  • the thrust bearing means 42 rigidly supports the rotatable lead screw 38 against axial displacement in either direction, while permitting a driving connection between the ratchet wheel 48 and the lead screw.
  • An axial force, tending to move the lead screw to the right, will be transmitted from the peripheral shoulder 64 to the abutting inner races and 74 so as to be resisted by the angular roller bearing 68, the outer race '78of the latter abutting the shoulder 5d formed within the mounting block 56.
  • the thrust bearing means be positioned as near as possible to the movable cutter carriage 26. It is also highly preferable that the right end of the lead screw 38 be supported by mounting means which do not resist axial movement of the screw, thereby minimizing the possibility of bending of the latter.
  • the right end of the screw may be supported in the mounting bracket 120 (see FIGURE 2) which is secured to the frame of the machine by screws 122.
  • an electronic engraving machine of the type having a rotatable lead screw for axially advancing scanning and cutting components past corresponding rotatable cylinders having copy material and a plate to be engraved mounted thereon, respectively
  • the improvement comprising, in combination, a housing block rigidly anchored to a fixed body portion of the engraving machine, said block having a horizontal bore therein, a pair of opposed angular roller bearings housed side by side Within said bore and supported therein against axial displacement, adapter means extending into said bore in abutting relation with said bearing means whereby said adapter means are rigidly supported against axial displacement in either axial direction, and a horizontally disposed rotatable lead screw in substantial alignment with said adapter means and secured thereto whereby axial thrust on said lead screw will be transmitted through said bearing means to said mounting block and said body portion.
  • an electronic engraving machine of the type having a rotatable lead screw for axially advancing scanning and cutting components past corresponding cylinders having copy material and a plate to be engraved mounted thereon, respectively
  • the improvement comprising, in combination, a housing block rigidly anchored to a fixed body portion of the engraving machine, said block having a horizontal bore therein, thrust bearing means comprising a pair of opposed angular roller bearings housed side by side within said bore and supported therein against axial displacement, first adapter means extending into one end of said bore in abutting relation with said bearing means, a horizontally disposed rotatable lead screw in substantial alignment with said first adapter means and secured thereto, second adapter means extending into the opposite end of said bore in abutting relation with said bearing means, said first and second adapter means being connected to one another at their inner adjacent ends, and a ratchet wheel fixedly mounted on said second adapter means for rotating said lead screw, whereby axial thrust in either axial direction developed on said lead screw during rotation thereof will be
  • an electronic engraving machine of the type having a rotatable lead screw for axially advancing scanning and cutting components past corresponding cylinders having copy material and a plate to be engraved mounted thereon, respectively
  • the improvement comprising, in combination, a housing block rigidly anchored to a fixed body portion of the engraving machine, said block having a horizontal bore therein, thrust bearing means comprising a pair of opposed angular roller bearings housed side by side within said bore and supported therein against axial displacement, first adapter means extending into one end of said bore in abutting relation with said bearing means, a horizontally disposed rotatable lead screw in substantial alignment with said first adapter means and having one end connected thereto, and the other end of said lead screw being axially free and being supported against radial displacement, second adapter means extending into the opposite end of said bore in abutting relation with said bearing means, said first and second adapter means being connected at their inner adjacent ends to one another, and a ratchet fixedly mounted on said second adapter means for rotating
  • an electronic engraving machine of the type having a rotatable lead screw for axially advancing scanning and cutting components past corresponding cylinders having copy material and a plate to be engraved mounted thereon, respectively
  • the improvement comprising, in combination, a housing block rigidly anchored to a fixed body portion of the engraving machine, said block having a stepped horizontal bore extending therethrough and pro viding a peripheral shoulder portion, a pair of adapter members extending into said bore from opposite ends thereof, a pair of opposed inner and outer angular roller bearings mounted on the inner end of one of said adapters in side by side abutting relation and housed within a larger diameter portion of said bore with an outer race of the inner one of said bearings engaging said shoulder portion, said adapter members being connected to one another at their inner adjacent ends and each having a peripheral ledge portion abutting an inner race of a corresponding one of said bearings, a cover plate secured to said block for axially supporting an outer race of the outer one of said bearings, and a lead screw in
  • an electronic engraving machine of the type having a scanning cylinder for mounting copy material and an engraving cylinder for mounting a plate to be engraved
  • the improvement comprising, in combination, a housing block rigidly anchored to a fixed body portion of the engraving machine, said block having a large diameter horizontal bore in one end which terminates in a first peripheral shoulder portion and a smaller diameter bore communicating therewith and extending horizontally to the opposite end of said block, a first stepped adapter shaft having a reduced diameter end portion terminating in a second peripheral shoulder portion, a pair of angular roller bearings each comprising an inner race, a cage for retaining a plurality of rollers, and an outer race, said bearings being mounted on said end portion with their inner races in abutting relation, said end portion extending into said large diameter bore with the outer race of the inner one of said bearings engaged against said first peripheral shoulder, and with the inner race of the outer one of said bearings engaged against said second shoulder portion, a cover plate apertured to accommodate said first adapter shaft and rigidly secured to said one

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Transmission Devices (AREA)
US163289A 1961-12-29 1961-12-29 Thrust bearing means for electronic engraving machines Expired - Lifetime US3183745A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NL279821D NL279821A (de) 1961-12-29
US163289A US3183745A (en) 1961-12-29 1961-12-29 Thrust bearing means for electronic engraving machines
GB8452/62A GB943526A (en) 1961-12-29 1962-03-05 Improvement in or relating to electronic engraving machines
DEG34754A DE1236938B (de) 1961-12-29 1962-04-17 Elektronische Graviermaschine
AT404662A AT241938B (de) 1961-12-29 1962-05-17 Elektronische Graviermaschine
CH677562A CH405994A (de) 1961-12-29 1962-06-05 Graviermaschine
BE619070A BE619070A (fr) 1961-12-29 1962-06-18 Moyen de palier de butée destiné à une machine à graver électronique.
DK364762AA DK114949B (da) 1961-12-29 1962-08-20 Elektronisk graveringsmaskine.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US163289A US3183745A (en) 1961-12-29 1961-12-29 Thrust bearing means for electronic engraving machines

Publications (1)

Publication Number Publication Date
US3183745A true US3183745A (en) 1965-05-18

Family

ID=22589333

Family Applications (1)

Application Number Title Priority Date Filing Date
US163289A Expired - Lifetime US3183745A (en) 1961-12-29 1961-12-29 Thrust bearing means for electronic engraving machines

Country Status (8)

Country Link
US (1) US3183745A (de)
AT (1) AT241938B (de)
BE (1) BE619070A (de)
CH (1) CH405994A (de)
DE (1) DE1236938B (de)
DK (1) DK114949B (de)
GB (1) GB943526A (de)
NL (1) NL279821A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4635368A (en) * 1984-08-10 1987-01-13 Golden Michael G Apparatus for making electronic circuit boards
US20100137116A1 (en) * 2008-12-03 2010-06-03 Hanwit Precision Industries Ltd. Quick-positioning screw assembly machining method
CN103738091A (zh) * 2013-11-27 2014-04-23 耐世特凌云驱动系统（芜湖）有限公司 C/v外环辊字机
US20220176433A1 (en) * 2020-12-03 2022-06-09 Dong-A Flexible Metal Tubes Co., Ltd Corrugated pipe forming apparatus

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1671682A (en) * 1923-12-15 1928-05-29 Almon E Norris Vehicle construction
US1999891A (en) * 1933-11-24 1935-04-30 Timken Roller Bearing Co Roller bearing journal box construction
US2021537A (en) * 1934-07-13 1935-11-19 John Bath & Company Lead screw correcting device
US2063614A (en) * 1931-12-14 1936-12-08 Mackinner Corp Method and apparatus for making printing plates
US2065614A (en) * 1935-03-14 1936-12-29 Timken Roller Bearing Co Telltale roller bearing construction
US2086798A (en) * 1932-06-22 1937-07-13 Greenberg Otto William Photoelectrical device for producing half-tone cuts
US2314622A (en) * 1942-03-21 1943-03-23 Timken Roiler Bearing Company Bearing mounting
US2738125A (en) * 1951-06-19 1956-03-13 United Aircraft Corp Locking means between compressor and turbine
US2834625A (en) * 1957-09-18 1958-05-13 Gateway Corp Multi-part handle
US2925464A (en) * 1954-05-14 1960-02-16 Raible Albert Oskar Machine for producing a facsimile reproduction

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1671682A (en) * 1923-12-15 1928-05-29 Almon E Norris Vehicle construction
US2063614A (en) * 1931-12-14 1936-12-08 Mackinner Corp Method and apparatus for making printing plates
US2086798A (en) * 1932-06-22 1937-07-13 Greenberg Otto William Photoelectrical device for producing half-tone cuts
US1999891A (en) * 1933-11-24 1935-04-30 Timken Roller Bearing Co Roller bearing journal box construction
US2021537A (en) * 1934-07-13 1935-11-19 John Bath & Company Lead screw correcting device
US2065614A (en) * 1935-03-14 1936-12-29 Timken Roller Bearing Co Telltale roller bearing construction
US2314622A (en) * 1942-03-21 1943-03-23 Timken Roiler Bearing Company Bearing mounting
US2738125A (en) * 1951-06-19 1956-03-13 United Aircraft Corp Locking means between compressor and turbine
US2925464A (en) * 1954-05-14 1960-02-16 Raible Albert Oskar Machine for producing a facsimile reproduction
US2834625A (en) * 1957-09-18 1958-05-13 Gateway Corp Multi-part handle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4635368A (en) * 1984-08-10 1987-01-13 Golden Michael G Apparatus for making electronic circuit boards
US20100137116A1 (en) * 2008-12-03 2010-06-03 Hanwit Precision Industries Ltd. Quick-positioning screw assembly machining method
CN103738091A (zh) * 2013-11-27 2014-04-23 耐世特凌云驱动系统（芜湖）有限公司 C/v外环辊字机
US20220176433A1 (en) * 2020-12-03 2022-06-09 Dong-A Flexible Metal Tubes Co., Ltd Corrugated pipe forming apparatus
US11648598B2 (en) * 2020-12-03 2023-05-16 Dong-A Flexible Metal Tubes Co., Ltd Corrugated pipe forming apparatus

Also Published As

Publication number Publication date
AT241938B (de) 1965-08-25
DK114949B (da) 1969-08-18
BE619070A (fr) 1962-10-15
GB943526A (en) 1963-12-04
CH405994A (de) 1966-01-15
DE1236938B (de) 1967-03-16
NL279821A (de)

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