US3717053A - Hand tool - Google Patents

Hand tool Download PDF

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Publication number
US3717053A
US3717053A US00059997A US3717053DA US3717053A US 3717053 A US3717053 A US 3717053A US 00059997 A US00059997 A US 00059997A US 3717053D A US3717053D A US 3717053DA US 3717053 A US3717053 A US 3717053A
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US
United States
Prior art keywords
tubular member
adjustment member
adjustment
splines
indexing means
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
US00059997A
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English (en)
Inventor
F Sturges
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.)
S P Q R ENG Ltd
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S P Q R ENG Ltd
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 S P Q R ENG Ltd filed Critical S P Q R ENG Ltd
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Publication of US3717053A publication Critical patent/US3717053A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/30—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same positioning or withdrawing springs, e.g. coil or leaf springs

Definitions

  • HAND TOOL [75] Inventor: Frederick William Sturges, Hampshire, England FOREIGN PATENTS OR APPLICATIONS 703,429 3/l94l Germany ..8l/3 F Primary Examiner-Robert C. Riordon Assistant ExaminerRoscoe V. Parker, .lr. Attorney-Paul H.
  • ABSTRACT A hand tool suitable for adjusting the tappet clearance of overhead valves in an internal combustion engine in which a member for engaging the nut of the valve and a member for engaging the screw of the valve are attached to parts which are receivable one within the other, and indexing means are provided between the parts to locate the parts in any one of a number of equiangularly spaced positions relative to one another.
  • This invention relates to a hand tool and is particularly although not exclusively concerned with such a tool that combines the functions of a spanner and screwdriver for adjusting the tappet clearance of overhead valves of an internal combustion engine.
  • the present invention provides a hand tool comprising a tubular member, one end of which is formed with a nut engaging part, an adjustment member carrying a part for engagement with a screw, the adjustment member being receivable in the tubular member from the other end thereof and indexing means acting between a part of the tubular member and a part of the adjustment member, which parts are receivable one within the other the indexing means acting to locate the adjustment member in any one of a plurality of equi-angularly spaced locations relative to the tubular member while allowing relative axial adjustment.
  • the indexing means preferably includes splines on the adjustment member engageable by a plunger carried by the tubular member and the part for engagement with a screw comprises a screwdriver blade formed at the foot of the adjustment member.
  • the adjustment member is formed with a skirt which fits over the other end of the tubular member the splines being formed on the internal surface of this skirt to engage a plunger member in the form of a roller flexibly carried by the tubular member.
  • the indexing may be arranged to give a greater resistance to relative turning of the tubular member and the adjustment member in one direction than in the other direction.
  • the indexing means includes a bushing carried at the other end of the tubular member and having a portion cut away intermediate of its ends and partially around its circumference to provide a flexible arm adjacent the end of which is carried a roller engaging in the splines.
  • This arrangement is such that movement of the splines relative to the roller in one direction tends to flex the arm inwards and allow easy relative turning while movement of the splines in the other direction tends to flex the arm outwards and give considerable resistance to relative turning providing well defined steps from one spline to the next .with the desired click.
  • FIG. 1 is an axial section through a hand tool in accordance with the invention.
  • FIG. 2 is a section on a line 11-11 ofFlG. 1, and
  • FIG. 3 is a section through the upper end of part of the adjustment member on the line l111l1 of FIG. 1.
  • the tool comprises a tubular member 1 provided at its lower end with a detachable nut engaging box spanner 2.
  • a set of such spanners may be provided for use with the appropriate sized nuts.
  • a handle 3 is secured to the tubular member 1 and may also be detachably connected if required for easy packing.
  • An adjustment member is indicated generally at 4 and has a shaft 5 insertable into the upper end of the tubular member 1 as a close sliding fit in the lower part of a nylon bushing 6 which itself is a force fit within the upper end of the tubular member 1.
  • the engaging surfaces of parts 5 and 6 form a self-lubricating bearing allowing easy turning and axial movement of the shaft 5 in the tubular member.
  • the lower end of a plastics material shaft 5 has firmly secured thereto a metal extension shaft 7 the lower end of which is formed as a screwdriver blade 8.
  • Thescrewdriver shaft is thus slightly flexible.
  • the upper end of shaft 5, one end of which is formed with projections 10, has secured thereto a head indicated generally at 11 and forming part of the adjustment member.
  • the head has a first part 12 in which the upper end of the shaft 5 is moulded and which has a depending skirt 13 in which the upper end of the tubular member 1 is received.
  • the internal surface of the skirt is formed with equi-angularly spaced splines 14 while the outer surface is formed with ribs and grooves 15.
  • the upper surface of part 12 is formed with an annular ratchet having four teeth 16 equi-angularly spaced and engaging with similar teeth formed on a similar annular ratchet 17 on the lower surface of the central portion of a cap 18 joining the second drive part of the head.
  • the central area of the upper surface of the part 12 is formed with an upwardly extending projection 20 received in a bore 21 in the lower part of the cap, the projection 20 itself being formed with a bore 22 containing a bushing 23 to receive the end of a screw 24.
  • the cap 18 is also fonned with a bore 25 to receive the screw 24, the upper part 27 of this bore being enlarged to house a spring 28 located around the screw and compressed between the head of the screw and the base 29 of the enlarged bore.
  • the screw is screwed down until a shoulder 30 thereof engages the top of the bushing 23 thus compressing the spring a predetermined amount to urge the cap and the part 12 together in an axial direction with a predetermined force.
  • the cap 18 has a knurled exterior and its lower edge extends freely over the upper edge of part 12.
  • the cap is formed with an annular groove 31 opening to its upper surface, and a cover plate 32 is located as a force fit over the central top portion of the cap to cover this groove and the head of the screw 24.
  • the cover plate has four prongs 33, which extend to the base of the groove and have outwardly projecting teeth 34, located in windows 35 in the wall of the cap to prevent removal of the cover plate.
  • the bushing 6 has an upper part which forms an extension of the tubular member 1 having the same outer and inner diameters. A portion of this upper part is cu taway to provide a vertical slot 34' and a circumferential slot 35', the latter extending through just over 180 and having its base indicated at 36. Above slot 35 there is thus fonned a flexible arm 37 the outer side of the end of which is provided with a p'artcylindrical groove 38. A plunger member 40 in the formof a cylindrical roller is located in the groove 38 so that its opposite side rests in one of the gaps between the splines 14.
  • the splines and rollers 40 provide an indexing means locating the adjustment member in one of a number of discrete equi-angularly spaced positions relative to the tubular member. Clockwise rotation of the adjustment member in the direction of arrow 41 of FIG. 2 can be easily effected since such movement tends to push the arm 37 inwards and allow the roller to pass easily over each of the splines. However, anti-clockwise movement of the adjustment member pushes the roller 40 in a direction which urges the arm 37 outwardly to provide a greater resistance to the turning. Theroller will thus jump from one groove to the next with a more positive action and a resulting click.
  • the clicks are counted by the operator and provide a precise indication of how far he has adjusted the tappet.
  • the sides of the splines up which the roller moves during the clockwise rotation are less sharp than the sides up which the roller moves during the anti-clockwise rotation of the adjustment member to enhance this effect.
  • the edge of the skirt l3 and the adjacent part of the tubular member are formed with a registering scale and datum line; the spacing of the splines 14 andtherefore the gaps therebetween corresponding to the smallest divisions of the scale.
  • the circumferential spacings of the spline and each division of the scale corresponds to a desired tappet clearance. For example each click may represent one thousandth of an inch tappet clearance.
  • a hand tool comprising a tubular member having a nut engaging part at one end thereof, an adjustment member carrying a part for engagement with a screw, the adjustment member being partly receivable in the tubular member from the other end thereof, indexing means acting between a part of the tubularmember and a part of the adjustment member, to locate the adjustment member in any one of a plurality of equiangularly spaced locations relative to the tubular member while allowing relative axial adjustments and in which the adjustment member is formed with a skirt which fits over said other end of the tubular member, and the indexing means includes splines formed in the internal face of the skirt and a plunger member in the form of a roller flexibly carried by the tubular member for engagement with the splines.
  • a hand tool comprising a tubular member having a nut engaging part at one end thereof, an adjustment member carrying a part for engagement with a screw, the adjustment member being partly receivable in the tubular member from the other end thereof, and indexing means acting between a part of the tubular member and a part of the adjustment member, said parts being receivable one within the other, and the indexing means acting to locate the adjustment member in any one of a plurality of equi-angularly spaced locations relative to the tubular member while allowing relative axial adjustment and in which the adjustment member has a drive part, coupling means coupling the drive part to the part for engagement with the screw, the coupling means being arranged to transmit a positive drive in one direction and a slip drive in the other direction so that only a predetermined limited force can be transmitted in said other direction.
  • a tool according to claim l in which the sides of the splines over which the plunger member moves during the clockwise rotation of the adjustment member are less sharp than the sides over which the plunger member moves during the anti-clockwise rotation of the adjustment member.
  • indexing means includes splines on one of the tubular member and the adjustment member and a plunger member in the form of a roller carried by the other of the tubular member and the adjustment member engaging the splines.
  • a hand tool comprising a tubular member having a nut engaging part at one end thereof, an adjustment member carrying a part for engagement with a screw, the adjustment member being partly receivable in the tubular member from the other end thereof, indexing means acting between a part of the tubular member and a part of the adjustment member, said parts being receivable one within the other and the indexing means comprising splines on one of the tubular member and the adjustment member and a plunger carried by the other of the tubular member and the adjustment member and acting to locate the adjustment member in any one of a plurality of equi-angularly spaced locations relative to the tubular member while allowing relative axial movement, the plunger and splines being continuously in engagement and being so arranged as to give a greater resistance to relative turning of the tubular member and the adjustment member in one direction than in the other direction.
  • a tool according to claim 5 in which the plunger member is carried on a circumferentially extending flexible arm.
  • the indexing means includes a bushing carried at said other end of the tubular member and having a portion cut away intermediate of its end and partially around its circumference to provide a flexible arm, adjacent the end of which is carried a roller engaging in splines on the adjustment member.
  • a tool according to claim 4 in which the plunger member is so mounted that it gives a greater resistance to relative turning of the tubular member and the adjustment member in one direction than in the other direction.
  • a tool according to claim 1 in which the part for engaging with a screw is a screwdriver having a shaft which is flexible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
US00059997A 1970-06-26 1970-07-31 Hand tool Expired - Lifetime US3717053A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB31126/70A GB1293866A (en) 1970-06-26 1970-06-26 Hand tool

Publications (1)

Publication Number Publication Date
US3717053A true US3717053A (en) 1973-02-20

Family

ID=10318387

Family Applications (1)

Application Number Title Priority Date Filing Date
US00059997A Expired - Lifetime US3717053A (en) 1970-06-26 1970-07-31 Hand tool

Country Status (3)

Country Link
US (1) US3717053A (pt)
JP (1) JPS4922758B1 (pt)
GB (1) GB1293866A (pt)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988925A (en) * 1975-11-21 1976-11-02 Ingersoll-Rand Company Valve lash adjusting tool and method therefor
US6345436B1 (en) * 1999-06-22 2002-02-12 Ernest Richardson Codrington Combination torque tool and method of adjusting valves and injectors
US6450072B1 (en) 2000-10-23 2002-09-17 Honda Of America Mfg., Inc. Clutch ball adjuster for tappet setting
US6474283B1 (en) * 2001-12-18 2002-11-05 Atlas Copco Tools Ab Valve lash setting method and device for executing the method
EP1378741A1 (en) * 2002-07-01 2004-01-07 ICA Cinetic Automation Valve lash adjustment tool and method
EP1898057A1 (en) * 2006-08-29 2008-03-12 Cinetic Automation Corporation Valve lash adjustment and inspection apparatus
US20080134843A1 (en) * 2006-11-15 2008-06-12 Smith Timothy J Socket receiver for an adjustable wrench assembly
US20080236342A1 (en) * 2007-03-30 2008-10-02 Honda Motor Co., Ltd. Pneumatic tappet adjustment tool
WO2012071265A2 (en) * 2010-11-22 2012-05-31 Jacobs Vehicle Systems, Inc. Appartus and method for valve lash adjustment
CN107859542A (zh) * 2017-12-08 2018-03-30 广西玉柴机器股份有限公司 一种发动机气门间隙调整装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS555875Y2 (pt) * 1974-12-31 1980-02-09
JPS54166164U (pt) * 1978-05-15 1979-11-21
US4222294A (en) * 1978-12-18 1980-09-16 Rockwell International Corporation Fastener tool socket retaining assembly
CN116141266B (zh) * 2023-04-23 2023-06-30 东方空间技术(山东)有限公司 一种用于火箭安装的弹簧压缩工装及其参数确定方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1654319A (en) * 1926-05-03 1927-12-27 Albert J Brown Tappet-adjusting tool
DE703429C (de) * 1939-04-12 1941-03-08 Erich Wagner Werkzeug zum Drehen und Befestigen der Einstellschraube am Schwinghebel einer Brennkraftmaschine
US2736220A (en) * 1956-02-28 Kamuk

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736220A (en) * 1956-02-28 Kamuk
US1654319A (en) * 1926-05-03 1927-12-27 Albert J Brown Tappet-adjusting tool
DE703429C (de) * 1939-04-12 1941-03-08 Erich Wagner Werkzeug zum Drehen und Befestigen der Einstellschraube am Schwinghebel einer Brennkraftmaschine

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988925A (en) * 1975-11-21 1976-11-02 Ingersoll-Rand Company Valve lash adjusting tool and method therefor
US6345436B1 (en) * 1999-06-22 2002-02-12 Ernest Richardson Codrington Combination torque tool and method of adjusting valves and injectors
US6450072B1 (en) 2000-10-23 2002-09-17 Honda Of America Mfg., Inc. Clutch ball adjuster for tappet setting
US6474283B1 (en) * 2001-12-18 2002-11-05 Atlas Copco Tools Ab Valve lash setting method and device for executing the method
US8001939B2 (en) 2002-07-01 2011-08-23 Cinetic Automation Corporation Valve lash adjustment and inspection apparatus
EP1378741A1 (en) * 2002-07-01 2004-01-07 ICA Cinetic Automation Valve lash adjustment tool and method
US20050205035A1 (en) * 2002-07-01 2005-09-22 Thomas Hathaway Valve lash adjustment apparatus and method
US6973905B2 (en) 2002-07-01 2005-12-13 Cinetic Automation Corporation Valve lash adjustment apparatus and method
US7207301B2 (en) 2002-07-01 2007-04-24 Cinetic Automation Corporation Valve lash adjustment apparatus and method
US20050098125A1 (en) * 2002-07-01 2005-05-12 Thomas Hathaway Valve lash adjustment apparatus and method
US7559301B2 (en) 2002-07-01 2009-07-14 Cinetic Automation Corporation Valve lash adjustment and inspection apparatus
US20090250031A1 (en) * 2002-07-01 2009-10-08 Hathaway Thomas J Valve Lash Adjustment and Inspection Apparatus
EP1898057A1 (en) * 2006-08-29 2008-03-12 Cinetic Automation Corporation Valve lash adjustment and inspection apparatus
US20080134843A1 (en) * 2006-11-15 2008-06-12 Smith Timothy J Socket receiver for an adjustable wrench assembly
US20080236342A1 (en) * 2007-03-30 2008-10-02 Honda Motor Co., Ltd. Pneumatic tappet adjustment tool
US7600452B2 (en) 2007-03-30 2009-10-13 Honda Motor Co., Ltd. Pneumatic tappet adjustment tool
WO2012071265A2 (en) * 2010-11-22 2012-05-31 Jacobs Vehicle Systems, Inc. Appartus and method for valve lash adjustment
WO2012071265A3 (en) * 2010-11-22 2014-04-10 Jacobs Vehicle Systems, Inc. Appartus and method for valve lash adjustment
CN107859542A (zh) * 2017-12-08 2018-03-30 广西玉柴机器股份有限公司 一种发动机气门间隙调整装置
CN107859542B (zh) * 2017-12-08 2023-06-06 广西玉柴机器股份有限公司 一种发动机气门间隙调整装置

Also Published As

Publication number Publication date
GB1293866A (en) 1972-10-25
JPS4922758B1 (pt) 1974-06-11

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