US3215461A - Knotter lock - Google Patents

Knotter lock Download PDF

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Publication number
US3215461A
US3215461A US313221A US31322163A US3215461A US 3215461 A US3215461 A US 3215461A US 313221 A US313221 A US 313221A US 31322163 A US31322163 A US 31322163A US 3215461 A US3215461 A US 3215461A
Authority
US
United States
Prior art keywords
pinion
latch
knotter
beak
tooth
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
US313221A
Other languages
English (en)
Inventor
Benjamin L Lurie
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.)
BH Bunn Co
Original Assignee
Bunn Co B
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 Bunn Co B filed Critical Bunn Co B
Priority to US313221A priority Critical patent/US3215461A/en
Priority to GB15478/64A priority patent/GB1021135A/en
Priority to DEB76402A priority patent/DE1261049B/de
Priority to CH530764A priority patent/CH435153A/de
Priority to SE5097/64A priority patent/SE300583B/xx
Priority to BE647167A priority patent/BE647167A/xx
Priority to NL6404643A priority patent/NL6404643A/xx
Application granted granted Critical
Publication of US3215461A publication Critical patent/US3215461A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/24—Securing ends of binding material
    • B65B13/26—Securing ends of binding material by knotting
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D37/00—Reaper-binders
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D59/00—Equipment for binding harvested produce
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D59/00—Equipment for binding harvested produce
    • A01D59/04—Knotters
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F15/00—Baling presses for straw, hay or the like
    • A01F15/08—Details
    • A01F15/14—Tying devices specially adapted for baling presses
    • A01F15/145—Twine knotters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B65H69/04—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by knotting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments
    • 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
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5124—Plural diverse manufacturing apparatus including means for metal shaping or assembling with means to feed work intermittently from one tool station to another
    • Y10T29/5127—Blank turret
    • Y10T29/513—Stationary work

Definitions

  • the knotter mechanism includes a twine-holding beak which is mounted on a rotatable shaft driven from an interrupted gear through intermediate bevel gearing.
  • a leaf spring bearing against a cam surface on a lever in continuous contact with the beak is depended upon to hold the beak in a predetermined position relative to the remainder of the tying apparatus during such times as the beak is not in operation.
  • the knot may occur that the knot is not released at the time it is expected to be free of the beak, and the operator, unaware that he is required to wait a second longer for the release to take place, may jerk the tied bundle to tear it free of the machine.
  • the unsevered twine exerts a severe pull on the beak and rotates it out of the position intended for it by the leaf spring and cam. Due to the construction of the cam, the beak may remain in its turned position andbe as much as 45 out of phase with its drive gear in the subsequent operation of the machine. This in turn results in a malfunction of the machine and in a possible destruction of the drive for the knotter.
  • FIG. 1 is a perspective view of a knotter of the prior art and of an interrupted gear by which the knotter is driven;
  • FIG. 2 is a fragmentary perspective view corresponding to FIG. 1, showing the knotter locking mechanism of this invention applied to the prior art knotter;
  • FIG. 3 is an enlarged, exploded perspective view of the locking mechanism
  • FIG. 4 is a side elevational view of the knotter locking mechanism about to be released by a portion of the gear which drives the knotter;
  • FIG. 5 is a side elevational view corresponding to FIG. 4, showing the locking mechanism released;
  • FIG. 6 is a plan view of the locking mechanism
  • FIG. 7 is an end elevational view of the locking mechanism of FIG. 6.
  • FIG. 1 wherein that portion of a well known tying machine incorporating the knotting mechanism and the drive therefor is shown.
  • Said knotting mechanism is comprised of a frame 10, which may be a machined casting having a bearing 11 adapted to swing about a fixed pivot 12 in response to reciprocating motion imparted to the end 13 of an arm 14 thereof by an appropriate camming mechanism (not shown) forming part of the said well known tying machine.
  • Frame 10 supports a shaft 15 rotatable about an axis disposed generally transversely to the axis of pivot 12 and driven by a pinion 16 secured to one end of said shaft 15.
  • At the opposite end of said 15 is a bevel gear 17 meshing with another bevel gear 18 secured to a shaft 19 rotatable about an axis generally perpendicular to the axes of shaft 15 and pivot 12, and also supported for such rotation in frame 10.
  • Shaft 19 drives a knotter shown generally at 20, said knotter including a knotter beak 21, which, in the operation of forming a knot, is adapted to hold and manipulate a section of twine 22.
  • Rotative movement of beak 21 is restrained by a lever 23 pivoted at 24 to frame 10 and provided with a cam portion 25 adapted to contact the stem 26 of beak 21, and with a second cam 27 which is continuously contacted by a leaf spring 28 secured at 29 to frame 10.
  • Lever 23 is normally maintained by leaf spring 28 in a position to hold beak 21 in the dotted position shown in FIG. 1. In such position beak 21 is at the commencement of a cycle of operation and it is important that the cycle of operation commence with the beak in this position to ensure a proper phase relation between the beak and the remainder of the tying mechanism of the machine.
  • the drive for pinion 16 is an intermittent one and is provided by a rack 30 in the form of a gear segment secured to an arm 31 rotatable about an axis 32 during a portion of the knot tying cycle.
  • rack 30 in the form of a gear segment secured to an arm 31 rotatable about an axis 32 during a portion of the knot tying cycle.
  • a predetermined time interval is required between the initiation of the operation and its termination.
  • the movements of the knotter and its beak 21 are not visible to the operator, so that he may misjudge the time at which the tying cycle is completed and the tied twine is severed from that remaining in the machine. If he should attempt to remove the bundle from the tying machine prior to the completion of the tying of the knot, a sudden pull is exerted upon twine 22, which tends to rotate beak 21 about its shaft 19 against the restraining action of leaf spring 28 upon lever 23, with the result that said beak remains in its turned position.
  • beak 21 The rotation of beak 21 is accompanied by a similar rotation of shaft 19, bevel gears 18 and 17, shaft 15, and gear 16, so that the tooth having the relief 33 is rotated out of its proper orientation relative to rack 30.
  • the entire knotting mechanism is thus out of phase with the remainder of the machine and serious damage to the knotter can result.
  • FIGS. 2 to 6,' The manner in which the above described problem is solved by the present invention is shown in FIGS. 2 to 6,'
  • I provide a latch which is automatically operable at the proper times to engage a tooth of pinion 16to hold said pinion and the entire train of mechanisms from the pinion to and including the knotter beak 21 against rotation relative to frame 10.
  • the latch is automatically released by a portion of the drive gear for the pinion just prior to the engagement of the pinion by the gear.
  • the proper phasing of the operation of the latch insures holding the beak 21 in its desired starting position after each knot-tying operation, regardless of any unwarranted external forces which may be applied to twine 22, after pinion 16 is disengaged from rack 30.
  • the pinion holding means is shown more clearly in FIGS. 2 and 3, to which reference is now made.
  • the pinion holding means is comprised, in general, of a latch 34,pivotally mounted on a bracket 35, which is secured to frame 10 in a manner not to interfere with the functioning of any of the remaining mechanisms of the knotter.
  • rack 30 is formed as a separate gear sector which is then appropriately secured to a rotatable arm 31 provided with a surface 36 having a circular contour disposed adjacent and below, or radially within the teeth of rack 30.
  • the leading edge 60 of surface 36 is chamfered for the purpose of this invention to provide an abutment adjacent surface 36, the function of which will be hereinafter described. It is the rotatable arm of the existing tying machine which is utilized to time the operation of the latch so that it is released when rack 30 engages pinion 16 and is immediately applied when rack 30 disengages said pinion 16.
  • Latch 34 is comprised of an arm 37 on which is formed a cam 38 having a first cam surface 39 and a second cam surface 40, angularly disposed with respect to cam surface 39 and adjacent thereto, formed on the end thereof.
  • One end of arm 37 is bent at right angles to the general plane of said arm to form a pawl 41 having a tooth 42 adapted to be received between adjacent teeth on pinion 16.
  • Pawl 37 is pivoted at 43 upon a pin 44 secured at 45 to bracket 35.
  • Bracket 35 has a series of tabs formed thereon, the first of which 46 is provided with an opening 47 through which passes a screw 48 by which the bracket is secured to frame 10.
  • a second tab 49 is similarly provided with an opening 50 through which passes a screw 51 by which tab 50 is secured to another surface on frame 10.
  • the two points of support, namely, screws 48 and 51 additionally provide a means for preventing bracket 35 from turning relative to frame 10.
  • latch 34 be disposed in coplanar alignment with arm 31 and that bracket 35 be disposed beside rack 30, which makes it necessary, therefore, to space latch 34 from bracket 35.
  • the correct, spacing is provided by a bushing 52 mounted on pin 44 between latch 34 and bracket 35.
  • Latch 34 is retained on pin 44 by a snap ring 53.
  • latch 34 will be continuously urged in a direction to cause tooth 42 thereof to enter between two adjacent teeth on pinion 16.
  • Such bias is provided by a spring 54 which is retained between a tab 55 extending laterally from latch 34 and the third tab 56 on bracket 35 which extends laterally over tab 55 and is provided with a pin 57 for retaining spring 54 thereon.
  • FIGS. 4 and 5 the operation of the latch will now be described.
  • latch 34 is in its lower position in which tooth 42 is disposed between two adjacent teeth of pinion 16 to hold said pinion against rotation.
  • the tooth having the'relief 33 is immediately adjacent rack 30, and the first tooth 58 of said rack 30 is about to engage the tooth 59 adjacent the one with relief 33.
  • Arm 31 rotates in a counter-clockwise direction as viewed in FIG. 4 and chamfered corner or abutment 60, as shown in FIG. 4, is just contacting the cam surface 39 on latch 34.
  • Said surface 39 is disPOSfid at an angle with respect to surface 36 so that continued rotation of arm 31 causes abutment 60 to cam said surface 39 radially outwardly with respect to rack 30, and the associated latch 34 to be rotated in a counter-clockwise direction about its pivot 43, thereby raising tooth 42 from pinion 16 and disengaging said tooth from the teeth of said pinion.
  • latch 34 is shown in its raised position with cam surface 40 thereof riding on surface 36 to hold said latch on its raised position. In such position, pinion 16 is free to turn as it is driven by rack 30, and in this manner the normal knot-tying functions of knotter 24 may be performed.
  • spring 54 which has been holding latch 34 down and urging cam surface 40 into contact with surface 36, will cause latch 34 to drop down and engage pinion 36, thereby holding said pinion against further rotation.
  • the disposition of surface 40 relative to surface 36 is such that latch 34 will drop down to have its tooth 42 engage pinion 16 when rack 30 has disengaged itself from said pinion 16. In this position the tooth having the relief 33 will be oriented in the position shown in FIG.
  • Bracket 35 and latch 34 are preferably made as stampings so as to require a minimum of machine work.
  • the only additional machine work required on the knot-tying apparatus to accommodate latch 34 is the machining of surface 36 which normally would be unfinished, since it previously performed no useful function. It will also be necessary to drill and tap the openings in frame 10 to receive the screws 48 and 51 by which bracket 35 is attached to said frame.
  • the space occupied by the bracket and latch is available on the existing machines and does not require a modification of any of the associated or adjacent mechanisms for its provision. This is true in all phases of the operation of bracket 10 including those wherein it is oscillated about pivot 12 in the further operation of the knotting machine.
  • a rotatable knotter beak including a pinion gear and an interrupted gear adapted to engage and drive the pinion gear, and latch means for engaging said pinion gear to hold said gear against rotation.
  • a frame a shaft mounted on the frame, a knotter beak secured to said shaft, means for rotating said shaft, said means including a toothed pinion secured to said shaft, an interrupted gear adapted to engage and drive the pinion, latch means including a latch and a pivot support therefor mounted on said frame, said latch having a tooth adapted to enter between adjacent teeth on the pinion, resiilent means on the pivot support and bearing against the latch to urge the toothon the latch to enter between adjacent teeth on the pinion, and means movable with the interrupted gear for engaging the latch and moving said latch away from the pinion against the action of said resilient means, to thereby withdraw the tooth of the latch from between the teeth of the pinion.
  • said pivot support for the latch comprising a bracket rigidly secured to said frame, a pivot on said bracket, said latch being mounted on said pivot and spaced from the bracket, and said resilient means comprising tabs on the bracket and latch and a spring in compression between the tabs urging said tabs apart.
  • said latch having a first cam surface, and a second cam surface adjacent the first cam surface, and said means movable with the interrupted gear comprising an abutment rotatable with said interrupted gear to engage and cam References Cited by the Examiner UNITED STATES PATENTS 1,387,051 8/21 Hathaway 289-6 DONALD W. PARKER, Primary Examiner. RUSSELL C. MADER, Examiner.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Transmission Devices (AREA)
US313221A 1963-10-02 1963-10-02 Knotter lock Expired - Lifetime US3215461A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US313221A US3215461A (en) 1963-10-02 1963-10-02 Knotter lock
GB15478/64A GB1021135A (en) 1963-10-02 1964-04-14 Tying machine
DEB76402A DE1261049B (de) 1963-10-02 1964-04-18 Sperrvorrichtung zur Sicherung der genauen Ausgangsstellung des Knoterschnabels eines Knoters zum Verschliessen der Kordelverschnuerung von Packstuecken
CH530764A CH435153A (de) 1963-10-02 1964-04-23 Knotervorrichtung
SE5097/64A SE300583B (de) 1963-10-02 1964-04-24
BE647167A BE647167A (de) 1963-10-02 1964-04-27
NL6404643A NL6404643A (de) 1963-10-02 1964-04-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US313221A US3215461A (en) 1963-10-02 1963-10-02 Knotter lock

Publications (1)

Publication Number Publication Date
US3215461A true US3215461A (en) 1965-11-02

Family

ID=23214840

Family Applications (1)

Application Number Title Priority Date Filing Date
US313221A Expired - Lifetime US3215461A (en) 1963-10-02 1963-10-02 Knotter lock

Country Status (7)

Country Link
US (1) US3215461A (de)
BE (1) BE647167A (de)
CH (1) CH435153A (de)
DE (1) DE1261049B (de)
GB (1) GB1021135A (de)
NL (1) NL6404643A (de)
SE (1) SE300583B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3294431A (en) * 1965-05-04 1966-12-27 Bunn Co B Knotter lock for tying machine
JPS4945987U (de) * 1972-07-24 1974-04-22
FR2295901A1 (fr) * 1974-12-24 1976-07-23 Benz Willi Machine a nouer les fils
CN102249012A (zh) * 2010-05-20 2011-11-23 卓振辉 用于捆扎机的结绳器
CN112425350A (zh) * 2020-11-19 2021-03-02 安徽邓氏机械制造有限公司 一种农作物秸秆收割打捆机及其工作方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1387051A (en) * 1915-06-15 1921-08-09 Barber Colman Co Knot-tying implement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2374900A (en) * 1943-09-03 1945-05-01 Nat Bundle Tyer Company Bundle tying machine
DE1137705B (de) * 1960-02-25 1962-10-11 Schloemann Ag Rollenfuehrungskasten mit mehreren Rollenpaaren

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1387051A (en) * 1915-06-15 1921-08-09 Barber Colman Co Knot-tying implement

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3294431A (en) * 1965-05-04 1966-12-27 Bunn Co B Knotter lock for tying machine
JPS4945987U (de) * 1972-07-24 1974-04-22
FR2295901A1 (fr) * 1974-12-24 1976-07-23 Benz Willi Machine a nouer les fils
CN102249012A (zh) * 2010-05-20 2011-11-23 卓振辉 用于捆扎机的结绳器
CN112425350A (zh) * 2020-11-19 2021-03-02 安徽邓氏机械制造有限公司 一种农作物秸秆收割打捆机及其工作方法
CN112425350B (zh) * 2020-11-19 2022-09-20 安徽邓氏机械制造有限公司 一种农作物秸秆收割打捆机及其工作方法

Also Published As

Publication number Publication date
DE1261049B (de) 1968-02-08
SE300583B (de) 1968-04-29
GB1021135A (en) 1966-02-23
BE647167A (de) 1964-10-27
CH435153A (de) 1967-04-30
NL6404643A (de) 1965-04-05

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