GB2076098A - Members with superimposed screw threads - Google Patents

Members with superimposed screw threads Download PDF

Info

Publication number
GB2076098A
GB2076098A GB8016189A GB8016189A GB2076098A GB 2076098 A GB2076098 A GB 2076098A GB 8016189 A GB8016189 A GB 8016189A GB 8016189 A GB8016189 A GB 8016189A GB 2076098 A GB2076098 A GB 2076098A
Authority
GB
United Kingdom
Prior art keywords
thread
right hand
left hand
threaded member
shaft
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.)
Withdrawn
Application number
GB8016189A
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.)
SKENFIELD GEOFFREY
Original Assignee
SKENFIELD GEOFFREY
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 SKENFIELD GEOFFREY filed Critical SKENFIELD GEOFFREY
Priority to GB8016189A priority Critical patent/GB2076098A/en
Publication of GB2076098A publication Critical patent/GB2076098A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/02—Shape of thread; Special thread-forms
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/02—Shape of thread; Special thread-forms
    • F16B2033/025—Shape of thread; Special thread-forms with left-hand thread

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

A method of attaching together an internally threaded member and an externally threaded member, where either a) the externally threaded member possesses separate right hand and left hand threads, or b) the internally threaded member possesses separate right hand and left hand threads; in both cases, the co-operating threaded member is manufactured with both right hand and left hand threads superimposed on each other. For instance, where it is desired to fit the same accessory onto either end of a rotating drive shaft on a wood lathe, the nut or the shaft could have the superimposed right and left hand threads. In such cases the nut will be self tightening. The thread details are independent.

Description

SPECIFICATION Superimposed thread forms This application concerns the ability to attach an internally threaded member onto an externally threaded member where:- (a) The externally threaded member may possess a right hand or a left hand thread.
or (b) The internally threaded member may possess a right hand or a left hand thread.
For instance where it is desired to fit the same accessory onto either end of a rotating drive shaft (that shaft having a right hand thread at one end and a left hand thread at the other - as on a wood lathe) then the principle of this application could be used.
This application is based on the fact that: For case (a) the 'nut' is manufactured with both threads -- one being superimposed on the other, while the 'shaft' (or whatever is the case) has either a right hand or a left hand thread.
For case (b) the 'shaft' is manufactured with both threads -- one being superimposed on the other, while the 'nut' has either a right hand or a left hand thread.
The thread sizes used for the right hand and left hand threads are independent and, subject to geometrical constraints, they may have the same or different pitch. Similarly, they may have the same or different included angle. The thread form and number of thread starts is also not restricted.
1. A method of attaching an accessory to either end of a rotating shaft (that shaft rotating in one direction only such that is will not tend to release itself when a torque (also in one direction only) is applied to the accessory.
(e.g. as an accessory on a wood lathe).
2. A method of attaching two threaded members together such that one may have a right hand and a left hand thread and be screwed onto a left or a right hand thread.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (2)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Superimposed thread forms This application concerns the ability to attach an internally threaded member onto an externally threaded member where:- (a) The externally threaded member may possess a right hand or a left hand thread. or (b) The internally threaded member may possess a right hand or a left hand thread. For instance where it is desired to fit the same accessory onto either end of a rotating drive shaft (that shaft having a right hand thread at one end and a left hand thread at the other - as on a wood lathe) then the principle of this application could be used. This application is based on the fact that: For case (a) the 'nut' is manufactured with both threads -- one being superimposed on the other, while the 'shaft' (or whatever is the case) has either a right hand or a left hand thread. For case (b) the 'shaft' is manufactured with both threads -- one being superimposed on the other, while the 'nut' has either a right hand or a left hand thread. The thread sizes used for the right hand and left hand threads are independent and, subject to geometrical constraints, they may have the same or different pitch. Similarly, they may have the same or different included angle. The thread form and number of thread starts is also not restricted. CLAIMS
1. A method of attaching an accessory to either end of a rotating shaft (that shaft rotating in one direction only such that is will not tend to release itself when a torque (also in one direction only) is applied to the accessory.
(e.g. as an accessory on a wood lathe).
2. A method of attaching two threaded members together such that one may have a right hand and a left hand thread and be screwed onto a left or a right hand thread.
GB8016189A 1980-05-16 1980-05-16 Members with superimposed screw threads Withdrawn GB2076098A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8016189A GB2076098A (en) 1980-05-16 1980-05-16 Members with superimposed screw threads

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8016189A GB2076098A (en) 1980-05-16 1980-05-16 Members with superimposed screw threads

Publications (1)

Publication Number Publication Date
GB2076098A true GB2076098A (en) 1981-11-25

Family

ID=10513455

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8016189A Withdrawn GB2076098A (en) 1980-05-16 1980-05-16 Members with superimposed screw threads

Country Status (1)

Country Link
GB (1) GB2076098A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014116972A1 (en) * 2013-01-28 2014-07-31 Patterson Richard Maclean Receipt and/or coupling of threaded rods respectively having incompatible thread patterns

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014116972A1 (en) * 2013-01-28 2014-07-31 Patterson Richard Maclean Receipt and/or coupling of threaded rods respectively having incompatible thread patterns

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)