GB2033279A - A Spanner - Google Patents
A Spanner Download PDFInfo
- Publication number
- GB2033279A GB2033279A GB7842672A GB7842672A GB2033279A GB 2033279 A GB2033279 A GB 2033279A GB 7842672 A GB7842672 A GB 7842672A GB 7842672 A GB7842672 A GB 7842672A GB 2033279 A GB2033279 A GB 2033279A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nut
- tubular portion
- spring
- spanner
- socket
- 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- Withdrawn
Links
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
Classifications
-
- 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
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0057—Socket or nut ejector means
-
- 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
- B25B13/00—Spanners; Wrenches
- B25B13/02—Spanners; Wrenches with rigid jaws
- B25B13/06—Spanners; Wrenches with rigid jaws of socket type
-
- 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
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/02—Arrangements for handling screws or nuts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The spanner has a tubular portion 3 having an internal surface of hexagonal or other cross-section for applying torque to a screw threaded fastener such as a nut. Ejection means in the form of a spring 4 is provided. <IMAGE>
Description
SPECIFICATION
A Spanner
The invention relates to a spanner and is particularly, but not exclusively, concerned with a spanner of the socket type which can be rotated by means such as an integral handle, a separate ratchet handle or a rotary power tool so as to turn a screw threaded nut or bolt.
One of the problems with such sockets, particularly when removing nuts, is that the nut can be difficult to extract from the socket once it becomes unscrewed. Often it is necessary to knock the socket against a surface to shake the nut from the socket or use a screwdriver or other tool to extract the nut. An object of the invention is to provide an improved spanner which mitigates the foregoing problem.
According to the invention there is provided a spanner which has a tubular portion having an open end for receiving a screw threaded fastener and an internal surface which enables torque to be applied to the fastener, and ejection means on the spanner movable within the tubular portion to urge the fastener out of said open end.
Preferably the eiection means includes a coil spring mounted towards the end of said tubular portion remote from the open end and extending coaxially of the tubular portion. In use, the spring applies an axial bias to a nut located in the tubular portion so that once the nut becomes unscrewed, the spring urges the nut out of the open end. The spring may either be arranged to eject the nut completely, or simply cause the nut to protrude from the open end so that it can easily be extracted.
The free end of the spring preferably carries a plate which is arranged to abut the fastener.
The invention will now be described by way of example with reference to the accompanying drawings in which:
Figure 1 is an end view of a socket-type spanner in accordance with the invention, and
Figure 2 is a cross-section of the socket of
Figure 1 on the line Il-Il in Figure 1.
A socket 1 has a normal square or other shaped cross-section drive portion 2 for location on a driving spigot of a torque-applying handle or rotary power tool, and a hexagon or other suitable cross-section tubular portion 3 for engaging a screw-threaded nut or bolt.
A helical compression spring 4 has one end mounted on a shoulder 5 and carries an ejector plate 6 of metal sheet or other material at its other end. As will be apparent from Figure 1, the plate 6 has a hexagonal periphery which fits with working clearance within the tubular portion 3.
Where the tubular portion 3 is of alternative cross-section the periphery of the plate 6 is shaped accordingly.
In use, the socket is located on a nut on a threaded member by applying an axial load on the socket to cause the nut to urge the plate 6 along the socket against the bias of spring 4. After the nut has been completely unscrewed from the threaded member, the spring urges the plate 6 towards the open upper end of the socket as viewed in Figure 2 so that the nut emerges from the open end. The nut can either be completely ejected by the spring, or partially ejected so as simply to protrude from the open end.
If necessary the ejector plate 6 could be omitted. Also, the spring could be replaced by an alternative form of resilient element.
It is also envisaged that the socket may incorporate a centrifugally operable device which produces axial movement to eject the nut as a result of rotary movement imparted to the socket by a power tool.
Instead of using resilient means to eject the nut, it is envisaged that a suitable manually operable linkage could be incorporated which includes an ejection member movable along the tubular portion 3. Alternatively, a manually releasable detent could be used in combination with a spring so that operation of the detent to release the loaded spring would cause the spring to eject the nut.
Although specific reference has been made to socket-type spanners, the invention is applicable to spanners of any tubular sort, e.g. box spanners which are rotated by means such as a tommy bar.
Claims
1. A spanner including a tubular portion having an open end for receiving a screw threaded fastener, an internal surface which enables torque to be applied to the fastener, and ejection means movable within the tubular portion for urging the fastener out of said open end.
2. A spanner according to Claim 1 in which the ejection means comprises a resilient element.
3. A spanner according to Claim 2, in which the resilient element is a coil spring mounted towards the end of said tubular portion remote from the open end and extending coaxially of the tubular portion.
4. A spanner according to Claim 3, in which the spring is a helical compression spring.
5. A spanner according to Claim 4, in which the end of the spring remote from the open end of the tubular portion abuts a shoulder on the tubular portion.
6. A spanner according to Claim 5 in which the opposite end of the spring carries a plate arranged to abut the fastener.
7. A spanner according to Claim 6 in which the internal cross sectional shape of the tubular portion is complementary to the peripheral shape of the plate.
8. A spanner according to Claim 6 or 7, in which the plate fits with working clearance within the tubular portion.
9. A spanner according to any preceding claim in which the ejection means is arranged to move to an ejection position short of said open end so as to eject the fastener partially from the open end.
10. A spanner according to any preceding claim and in the case where the ejection means
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (12)
1. A spanner including a tubular portion having an open end for receiving a screw threaded fastener, an internal surface which enables torque to be applied to the fastener, and ejection means movable within the tubular portion for urging the fastener out of said open end.
2. A spanner according to Claim 1 in which the ejection means comprises a resilient element.
3. A spanner according to Claim 2, in which the resilient element is a coil spring mounted towards the end of said tubular portion remote from the open end and extending coaxially of the tubular portion.
4. A spanner according to Claim 3, in which the spring is a helical compression spring.
5. A spanner according to Claim 4, in which the end of the spring remote from the open end of the tubular portion abuts a shoulder on the tubular portion.
6. A spanner according to Claim 5 in which the opposite end of the spring carries a plate arranged to abut the fastener.
7. A spanner according to Claim 6 in which the internal cross sectional shape of the tubular portion is complementary to the peripheral shape of the plate.
8. A spanner according to Claim 6 or 7, in which the plate fits with working clearance within the tubular portion.
9. A spanner according to any preceding claim in which the ejection means is arranged to move to an ejection position short of said open end so as to eject the fastener partially from the open end.
10. A spanner according to any preceding claim and in the case where the ejection means comprises a resilient element, in which a manually operable detent is provided for releasing the resilient element when loaded by the inserted fastener so as to eject the fastener.
11. A spanner according to Claim 1, in which the ejection means comprises a linkage movable manually within the tubular portion to eject the fastener.
12. A spanner according to Claim 1, in which the ejection means is a centrifugally operable device with ejects the fastener as a result of rotary movement imparted to the tubular portion.
1 3. A spanner constructed and arranged substantially as described herein with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7842672A GB2033279A (en) | 1978-10-31 | 1978-10-31 | A Spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7842672A GB2033279A (en) | 1978-10-31 | 1978-10-31 | A Spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2033279A true GB2033279A (en) | 1980-05-21 |
Family
ID=10500712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7842672A Withdrawn GB2033279A (en) | 1978-10-31 | 1978-10-31 | A Spanner |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2033279A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4535657A (en) * | 1984-06-18 | 1985-08-20 | Farris Eugene A | Socket wrench having automatic nut-ejecting capability |
| CN113172575A (en) * | 2021-05-12 | 2021-07-27 | 天能电池集团（安徽）有限公司 | Lengthened terminal sleeve for pneumatic wrench |
-
1978
- 1978-10-31 GB GB7842672A patent/GB2033279A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4535657A (en) * | 1984-06-18 | 1985-08-20 | Farris Eugene A | Socket wrench having automatic nut-ejecting capability |
| CN113172575A (en) * | 2021-05-12 | 2021-07-27 | 天能电池集团（安徽）有限公司 | Lengthened terminal sleeve for pneumatic wrench |
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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) |