GB2341573A - Hammer with nail removing claw - Google Patents

Hammer with nail removing claw Download PDF

Info

Publication number
GB2341573A
GB2341573A GB9820069A GB9820069A GB2341573A GB 2341573 A GB2341573 A GB 2341573A GB 9820069 A GB9820069 A GB 9820069A GB 9820069 A GB9820069 A GB 9820069A GB 2341573 A GB2341573 A GB 2341573A
Authority
GB
United Kingdom
Prior art keywords
groove
root portion
legs
split claw
handle
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Withdrawn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
GB9820069A
Other versions
GB9820069D0 (en
Inventor
Ching Yi Chen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB9820069A priority Critical patent/GB2341573A/en
Publication of GB9820069D0 publication Critical patent/GB9820069D0/en
Publication of GB2341573A publication Critical patent/GB2341573A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D1/00—Hand hammers; Hammer heads of special shape or materials
    • B25D1/04—Hand hammers; Hammer heads of special shape or materials with provision for withdrawing or holding nails or spikes
    • B25D1/045—Hand hammers; Hammer heads of special shape or materials with provision for withdrawing or holding nails or spikes with fulcrum member for extracting long nails

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

A nail hammer includes a handle 30 and a head 20 secured to the handle. The head includes a striking member 21 formed on one end and a split claw 22 formed on the other end and having a groove 23 for forming a pair of legs. The groove includes an open end and a root portion. The split claw includes a hole 24 formed in the root portion 28 of the legs and communicating with the root portion of the groove for eliminating stress concentration. It is preferable that the hole includes a circular cross section.

Description

2341573 NAIL HAMMER HAVING A REINFORCING STRUCTURE The invention relates
to a nail hammer having a split claw that has a reinforcing structure.
Typical nail hammers comprise a hammer head secured on one end of a handle shank and having a split claw to provide the proper leverage for pulling nails. The split claw includes a V-shaped groove for engaging with the nails to be pulled. However, the sharp root portion of the groove is a stress concentration area where will be easily broken after use.
It is accordingly an object of the present invention to provide a nail hammer having a reinforcing structure for preventing the split claw from being easily damaged.
According to one aspect of the invention there is provided a nail hammer comprising:
a) a handle, and b) a head secured to the handle, the head including a first end having a striking member and including a second end having a split claw provided thereon, the split claw including a groove formed therein for defining a pair of legs, the groove including an open end and a root portion, the legs including a root portion corresponding to that of the groove, and the split claw including a hole formed in the root portion of the legs and communicating with the root portion of the groove for eliminating stress 2 concentration purposes.
The hole preferably includes a circular cross section. The root portions of the legs may be closely engaged with each other or may be separated from each other or may be slightly contacted with each other.
FIG. 1 is a perspective view of a nail hammer; FIG. 2 is a perspective view of a head of the nail hammer, in which a portion of the split claw is cut off for showing the reinforcing structure of the split claw; and FIGS. 3, 4 and 5 are partial plan views illustrating the applications of the split claw.
Referring to FIGS. 1 and 2, a nail hammer comprises a head 20 secured on one end of a handle shank 30 and including a striking member 21 provided in one end and a split claw 22 provided in the other end to provide the proper leverage for pulling nails. The split claw 22 includes a V-shaped groove 23 having an open end 26 and a narrower root portion 28 for defining a pair of legs 25, and includes a hole 24 formed in the root portion of the legs 25 corresponding to the root portion 28 of the groove 23 and communicating with the groove 23. The root portion 28 of the groove 23 is the position or the area where stress will mostly be concentrated. The provision of the hole 24 may eliminate the stress concentration problem.
Referring next to FIGS. 3-5, the root portions of 3 the legs 25 at the root portion 28 of the groove 23 may be closely engaged with each other (FIG. 3) or may be slightly separated from each other (FIG. 4) or may be slightly contacted with each other (FIG. 5). The hole 05.24 may all be provided for eliminating the stress concentration problem. It is preferable that the hole 24 includes a circular cross section, but may also include a cross section having the other shapes, such as an oval-shape, a square shape etc.

Claims (3)

CLAIMS:-
1. A nail hammer comprising:
handle, and head secured to the handle, the head including a first end having a striking member and including a second end having a split claw provided thereon, the split claw including a groove formed therein for defining a pair of legs, the groove including an open end and a root portion, the legs including a root portion corresponding to that of the groove, and the split claw including a hole formed in the root portion of the legs and communicating with the root portion of the groove for eliminating stress concentration purposes.
2. The nail hammer according to claim 1, wherein the hole includes a circular cross section.
3. The nail hammer substantially as herein described with reference to the accompanying drawings.
GB9820069A 1998-09-16 1998-09-16 Hammer with nail removing claw Withdrawn GB2341573A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9820069A GB2341573A (en) 1998-09-16 1998-09-16 Hammer with nail removing claw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9820069A GB2341573A (en) 1998-09-16 1998-09-16 Hammer with nail removing claw

Publications (2)

Publication Number Publication Date
GB9820069D0 GB9820069D0 (en) 1998-11-11
GB2341573A true GB2341573A (en) 2000-03-22

Family

ID=10838887

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9820069A Withdrawn GB2341573A (en) 1998-09-16 1998-09-16 Hammer with nail removing claw

Country Status (1)

Country Link
GB (1) GB2341573A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB206394A (en) * 1922-12-15 1923-11-08 Wynn Timmins & Co Ltd Improvements in hammer heads and in the manufacture thereof
GB266552A (en) * 1926-03-30 1927-03-03 Robert John Esler Nixon Improvements relating to devices for withdrawing nails, tacks, and the like
GB701063A (en) * 1951-04-10 1953-12-16 Josef Hjalmar Noll A tool for the extraction and retention of thumb tacks
GB1040268A (en) * 1965-03-29 1966-08-24 Vaughan & Bushnell Mfg Company Carpenter's claw hammer with vibration dampening means
US4042210A (en) * 1976-06-29 1977-08-16 Feldmann William F Adjustable leverage pry bar

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB206394A (en) * 1922-12-15 1923-11-08 Wynn Timmins & Co Ltd Improvements in hammer heads and in the manufacture thereof
GB266552A (en) * 1926-03-30 1927-03-03 Robert John Esler Nixon Improvements relating to devices for withdrawing nails, tacks, and the like
GB701063A (en) * 1951-04-10 1953-12-16 Josef Hjalmar Noll A tool for the extraction and retention of thumb tacks
GB1040268A (en) * 1965-03-29 1966-08-24 Vaughan & Bushnell Mfg Company Carpenter's claw hammer with vibration dampening means
US4042210A (en) * 1976-06-29 1977-08-16 Feldmann William F Adjustable leverage pry bar

Also Published As

Publication number Publication date
GB9820069D0 (en) 1998-11-11

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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)