US1465258A - Means for controlling the operation of pawl-and-ratchet mechanism - Google Patents

Means for controlling the operation of pawl-and-ratchet mechanism Download PDF

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Publication number
US1465258A
US1465258A US525928A US52592821A US1465258A US 1465258 A US1465258 A US 1465258A US 525928 A US525928 A US 525928A US 52592821 A US52592821 A US 52592821A US 1465258 A US1465258 A US 1465258A
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United States
Prior art keywords
pawl
controlling
ratchet mechanism
ratchet
shroud
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Expired - Lifetime
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US525928A
Inventor
French Arthur Gordon
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Linotype and Machinery Ltd
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Linotype and Machinery Ltd
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Priority to US525928A priority Critical patent/US1465258A/en
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Publication of US1465258A publication Critical patent/US1465258A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H29/00—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action
    • F16H29/02—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action between one of the shafts and an oscillating or reciprocating intermediate member, not rotating with either of the shafts
    • F16H29/10—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action between one of the shafts and an oscillating or reciprocating intermediate member, not rotating with either of the shafts in which the transmission ratio is changed by directly acting on the intermittently driving members
    • 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
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/50—Planing
    • Y10T409/50328—Means for shaving by blade spanning work surface
    • 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
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1558—Grip units and features
    • Y10T74/1565—Gripper releasing devices
    • Y10T74/1566—Power pawl lifter
    • Y10T74/1568—Automatic
    • Y10T74/1573—Power stroke

Definitions

  • This invention relates to improvements in means for controlling the operation of pawl and ratchet mechanism, either; rotary or rectilinear, of the kind in which the effectivestroke of the pawl is determined by an adjustable shroud interposed betweenit and the teeth ofthe ratchet.
  • the invention is particularly applicable to rotary ratchet mechanism such as that employed for intermittently rotating rollers of the water motion in lithographic printing presses, and it is hereinafter,as a convenient example, described in that connection;
  • the object of the invention is so to construct the mechanism that itshall at all times clearly indicate the extent to which the mechanism is being operated, and-to provide means whereby such extent may be (conveniently varied, irrespective of whether the'mechanism is in operationor at rest.
  • the plate 1 carrying the shroud 2 is, as ordinarily, adjustable about a short shaft 3 which is coaxial with the shaft icarrying the ratchet wheel 5, and according to the present invention, has on its periphery a toothedsegment (3 engagingwith a rack 7 rectilinearly adj ustable in suitable stationary'guides 8.
  • the extreme end of the screwed rod 9 has attached to it a pointer v14 adapted to register withra fixed scale 15 divided into numbered graduations indicating in terms of ratchet teeth the extent to which the mecha' nism is being operated. This operation is,
  • the pointer When the shroud is in its zero position as represented in the drawings, in which posi tionthe. engagement of the pawl 16 with the ratchetwheel5 is entirely prevented, the pointer correspondingly registers with the zero mark on .the scale. Assuming'the last mentioned position'to be the one from which adjustment is to be made and that it has been decided that the tated to the extent of say three teeth, thenthe lock nut 13 is released and the adjusting nut 12 is turned until the pointer-1 L; registers with the number'3 division of the scale, after which the lock against the lug 11'.
  • the shroud 2 will'then be in such a position that three teethor" the wheel 5 will be exposed to the operation of the pawl 16, thislast result being attained by the engagement-of the sliding rack '7 with the toothed segment 6 on the shroud plate 1'.
  • the above selected example of the inven- The adjusting and indicating mechanism is located in a conveniently accessible position clear of the working parts of the machine, so that the necessary be made at alltimes whether the machine is pointer and scale are at all times visible so that the operator can at a glance ascertain working. 1
  • pawl and ratchet mechanism comprising in combination a shroud adjustable' for varying the number of ratchet teeth engaged by the pawl, a toothedsegment fast to the shroud,
  • ratchet shall be ronut 13 is again tightened adjustments may the condition of a rack engaging the segment, a pointer fast to the rack, a fixed scale with which the pointer is adapted to register, and means op- .erative to adjust the rack and pointer simultaneously.
  • Means for-controlling the operation of pawl and ratchet mechanism comprising in;
  • a shroud adjustable for varying the number of ratchet teeth engaged by the pawl. 2L toothed. eeg'n'ient to the shroud, rack engaging the segment, so screwed rod fast to the rack, a nut threaded on the screwed rod for moving the reek longitudinally, and means for preventing axial movement of the nut.
  • Means for controlling the operation of pawl and ratchet mechanism comprising: in eomblnatlon a shroud ad ustable for varying the number of ratchet teeth engaged by the pawl, 21 toothed segment fast to the shronth a rack engaging the segment, a screwed rod to the rack, a nut threaded on the screwed red for moving the rack 10ngitudinuiiy, means for preventing axial movement of the nut 2L nointer i st to the screwed rod, and fixed scale with which the pointer is adapted to register.
  • testil'nony Whereoi T have affixed my 20 signature hereto.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Description

Aug. 21, 1923. 1,465,258
A.G.FRENCH MEANS FOR CONTROLLING THE OPERATION OF PAWL AND RATCHET MECHANISM Filed Dec. 50, 1921 eimrneyi through stationary Patented'A ug. 21, 11923.
' ARTHUR GORDON FRENCH, or nLrnrncnnn, Enenann. ASSIGNOR TO LrnorYrn' V; "Ann ACHINERY nvrrrr n, or Lennon, ENGLAND; I
MEANS FOR) CONTROLLING :THE' OPERATION, or PAWL-AND-RATCHET MECHANISM.
Application filedDecember 30, 1921. serial'no. 525,928.
T 0 all whom it may concern:
Be it known that I, ARTHUR GORDON 'FRENoH, a subject of the'King of the United Kingdom of Great Britain and Ireland, and resident at Linotype and'MachineryWo'rks,
Altrincham, in the county of Chester, Bug
land, have invented new and useful" Im .provements in Means for ,Controllingthe Operation of Pawland-Ratchet Mechanism, of which the following is a specification.
This invention relates to improvements in means for controlling the operation of pawl and ratchet mechanism, either; rotary or rectilinear, of the kind in which the effectivestroke of the pawl is determined by an adjustable shroud interposed betweenit and the teeth ofthe ratchet.
The invention is particularly applicable to rotary ratchet mechanism such as that employed for intermittently rotating rollers of the water motion in lithographic printing presses, and it is hereinafter,as a convenient example, described in that connection; The object of the invention is so to construct the mechanism that itshall at all times clearly indicate the extent to which the mechanism is being operated, and-to provide means whereby such extent may be (conveniently varied, irrespective of whether the'mechanism is in operationor at rest.
tion is illustratedfin .the accompanying drawings, in which Figure 1 is a front eleovation partly insection and Figure 2 a plan.
As shown in these drawings, the plate 1 carrying the shroud 2is, as ordinarily, adjustable about a short shaft 3 which is coaxial with the shaft icarrying the ratchet wheel 5, and according to the present invention, has on its periphery a toothedsegment (3 engagingwith a rack 7 rectilinearly adj ustable in suitable stationary'guides 8.
A'screwed rod 9 attached to one end of, or integral with, the rack 7, loosely passes lugs 10, 11, between which is housed a nut 12 threaded onfthe rod 9, while a secondnut 13, located at the outside of'the lug 11, is provided for use as a lock nut. V
The extreme end of the screwed rod 9 has attached to it a pointer v14 adapted to register withra fixed scale 15 divided into numbered graduations indicating in terms of ratchet teeth the extent to which the mecha' nism is being operated. This operation is,
as ordinarily, j ment of the ,5, saidpawl ratchet at restv or at work, and the effected through the engagepawl 16 with the ratchet wheel 7 being connected in any convens ient manner, as'for example, by alever arm, 17, to which it is pivotally connected, fast on one end of the shaft 3 to whoseother end is rigidly secured a second lever arm 18 connected through a link 19 with a crank pin 20 carriedby the crank disc 21.
When the shroud is in its zero position as represented in the drawings, in which posi tionthe. engagement of the pawl 16 with the ratchetwheel5 is entirely prevented, the pointer correspondingly registers with the zero mark on .the scale. Assuming'the last mentioned position'to be the one from which adjustment is to be made and that it has been decided that the tated to the extent of say three teeth, thenthe lock nut 13 is released and the adjusting nut 12 is turned until the pointer-1 L; registers with the number'3 division of the scale, after which the lock against the lug 11'. The shroud 2 will'then be in such a position that three teethor" the wheel 5 will be exposed to the operation of the pawl 16, thislast result being attained by the engagement-of the sliding rack '7 with the toothed segment 6 on the shroud plate 1'. The above selected example of the inven- The adjusting and indicating mechanism is located in a conveniently accessible position clear of the working parts of the machine, so that the necessary be made at alltimes whether the machine is pointer and scale are at all times visible so that the operator can at a glance ascertain working. 1
Having described my. invention, I declare that what I claim and desire to secure by Letters Patent is i I V 1; Means for controlling the operation. of
pawl and ratchet mechanism comprising in combination a shroud adjustable' for varying the number of ratchet teeth engaged by the pawl, a toothedsegment fast to the shroud,
ratchet shall be ronut 13 is again tightened adjustments may the condition of a rack engaging the segment, a pointer fast to the rack, a fixed scale with which the pointer is adapted to register, and means op- .erative to adjust the rack and pointer simultaneously.
2. Means for-controlling the operation of pawl and ratchet mechanism comprising in;
- combination a shroud adjustable for varying the number of ratchet teeth engaged by the pawl. 2L toothed. eeg'n'ient to the shroud, rack engaging the segment, so screwed rod fast to the rack, a nut threaded on the screwed rod for moving the reek longitudinally, and means for preventing axial movement of the nut.
3. Means for controlling the operation of pawl and ratchet mechanism comprising: in eomblnatlon a shroud ad ustable for varying the number of ratchet teeth engaged by the pawl, 21 toothed segment fast to the shronth a rack engaging the segment, a screwed rod to the rack, a nut threaded on the screwed red for moving the rack 10ngitudinuiiy, means for preventing axial movement of the nut 2L nointer i st to the screwed rod, and fixed scale with which the pointer is adapted to register.
In testil'nony Whereoi T have affixed my 20 signature hereto.
ARTHUR GORDON FRENCH.
US525928A 1921-12-30 1921-12-30 Means for controlling the operation of pawl-and-ratchet mechanism Expired - Lifetime US1465258A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527996A (en) * 1950-10-31 Hanpley
US2600178A (en) * 1946-07-31 1952-06-10 Farval Corp Lubricating mechanism
US2661901A (en) * 1951-07-25 1953-12-08 American Machine & Metals Counter to indicate the number of times a shaft is moved
US2733700A (en) * 1956-02-07 Dressing mechanism
US2935570A (en) * 1955-10-17 1960-05-03 Western Electric Co Telephone systems
US3049953A (en) * 1958-03-20 1962-08-21 Harry B Barrett Lathes and method of making same
US3306118A (en) * 1963-09-07 1967-02-28 Controls Co Of America Process timers
DE2365816A1 (en) * 1973-08-27 1976-07-08 Juergen Schulz Indirect printing with plate transfer and impression cylinders - has rack and pinion drive for rotating ductor roller of ink reservoir and stroke of rack is adjustable
DE2343102C3 (en) 1973-08-27 1977-10-27 Schulz, Jürgen, 1000 Berlin Rotary printing machine for indirect printing

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527996A (en) * 1950-10-31 Hanpley
US2733700A (en) * 1956-02-07 Dressing mechanism
US2600178A (en) * 1946-07-31 1952-06-10 Farval Corp Lubricating mechanism
US2661901A (en) * 1951-07-25 1953-12-08 American Machine & Metals Counter to indicate the number of times a shaft is moved
US2935570A (en) * 1955-10-17 1960-05-03 Western Electric Co Telephone systems
US3049953A (en) * 1958-03-20 1962-08-21 Harry B Barrett Lathes and method of making same
US3306118A (en) * 1963-09-07 1967-02-28 Controls Co Of America Process timers
DE2365816A1 (en) * 1973-08-27 1976-07-08 Juergen Schulz Indirect printing with plate transfer and impression cylinders - has rack and pinion drive for rotating ductor roller of ink reservoir and stroke of rack is adjustable
DE2343102C3 (en) 1973-08-27 1977-10-27 Schulz, Jürgen, 1000 Berlin Rotary printing machine for indirect printing

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