GB2164862A - Throwing hammer - Google Patents

Abstract

The hammer has a 4mm diameter stranded wire with prefixed loops at each end, a threaded head unit for screwing into the hammer head, a ball bearing unit, and a conical helical spring beneath these units which resists the shock of the hammer upon landing. The head unit is prevented from unscrewing when rotating by means of a nylon locking plug, and safety nuts are provided at each connection of the wire to the head and the grip. The stranded wire is stronger and safer than the existing single wire and damage thereto, which may lead to ultimate failure, is immediately apparent. <IMAGE>

Description

SPECIFICATION George Adam/Lodge throwing hammer As a result of stringent tests, a Hammer Wire Unit has been developed and produced for universal use by British Ropes Ltd., Doncaster, where the staff are experts in the manufacture of wire rope. The George Adam/Lodge Throwing Hammer Wire Unit has been manufactured on this experience.

The 4 mm diameter wire is all steel, with 6 separate strands round a 1 mm core, each strand made up of 19 small wires, with a breaking strain of 1.2 tonnes. The loops are prefixed under pressure with a crimping bush.

Flexibility of the Stranded Wire is more resistant to damage than a Single Wire.

New Features Handle Grip if damaged is easily replaced by removing the Clevis Pin and 'NYLOC' safety nut. If the Stranded Wire is heavily damaged, replace by removing the Clevis Pin and 'NY LOC' safety nut and refit a new wire with both ends looped.

A new safety feature is the nylon plug fitted in the 'Screwed Head Unit'this will resist vibrations and unscrewing when the hammer is thrown. The 'Screwed Head Unit' can easily be removed with the key spanner for inspection of the Ball Bearings for cleaning and oiling, etc.

The Ball Bearing Unit has a new feature with a Fork end and Clevis Pin with a 'NYLOC' safety nut to secure the looped wire. A conical helical spring is fitted which keeps this unit free to rotate in the Screwed Head Unit, yet is free to take shocks when the Hammer is landing.

Lodge Ltd., founded in 1919, repair Discus, Hammers and Javelins, etc. and the new Hammer is specifically designed for safety and easy maintenance, if required. Only one length of wire looped at each end is required for all weights of Hammers and the whole assembly can be used to convert all existing Hammers.

All parts are inter-changeable and the whole project will be a money saver for individuals, Small Clubs, Schools, Counties, etc.

All sizes of the Throwing Hammer are available to the relevant AAA and IAA Standards.

1. A Throwing Hammer comprising of a screwed head unit and a 4mm diameter stranded wire with prefixed loops and the means for safely securing the hammer to the stranded wire and the grip, providing a safer environment for the athletes and judges in the field.

2. A Throwing Hammer as claimed in Claim 1 where the Screwed Head Unit is secured into the hammer by a nylon plug in the screw threads to resist the unscrewing during rotation.

3. A Throwing Hammer as claimed in Claim 1 or Claim 2, wherein the Centre Component of the Screwed Head Unit rotates and is sprung to resist shock.

4. A Throwing Hammer as claimed in Claim 2 or Claim 3, whereby damage to any one of the six separate strands of the 4mm diameter stranded wire is easily detectable.

5. A Throwing Hammer as claimed in Claim 1 or Claim 4 that the stranded wire with prefixed loops is easily and safely replaceable.

6. A Throwing Hammer substantially as described herein with reference to Figs. 1-3 of the accompanying drawings.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION George Adam/Lodge throwing hammer As a result of stringent tests, a Hammer Wire Unit has been developed and produced for universal use by British Ropes Ltd., Doncaster, where the staff are experts in the manufacture of wire rope. The George Adam/Lodge Throwing Hammer Wire Unit has been manufactured on this experience. The 4 mm diameter wire is all steel, with 6 separate strands round a 1 mm core, each strand made up of 19 small wires, with a breaking strain of 1.2 tonnes. The loops are prefixed under pressure with a crimping bush. Flexibility of the Stranded Wire is more resistant to damage than a Single Wire. New Features Handle Grip if damaged is easily replaced by removing the Clevis Pin and 'NYLOC' safety nut. If the Stranded Wire is heavily damaged, replace by removing the Clevis Pin and 'NY LOC' safety nut and refit a new wire with both ends looped. A new safety feature is the nylon plug fitted in the 'Screwed Head Unit'this will resist vibrations and unscrewing when the hammer is thrown. The 'Screwed Head Unit' can easily be removed with the key spanner for inspection of the Ball Bearings for cleaning and oiling, etc. The Ball Bearing Unit has a new feature with a Fork end and Clevis Pin with a 'NYLOC' safety nut to secure the looped wire. A conical helical spring is fitted which keeps this unit free to rotate in the Screwed Head Unit, yet is free to take shocks when the Hammer is landing. Lodge Ltd., founded in 1919, repair Discus, Hammers and Javelins, etc. and the new Hammer is specifically designed for safety and easy maintenance, if required. Only one length of wire looped at each end is required for all weights of Hammers and the whole assembly can be used to convert all existing Hammers. All parts are inter-changeable and the whole project will be a money saver for individuals, Small Clubs, Schools, Counties, etc. All sizes of the Throwing Hammer are available to the relevant AAA and IAA Standards. CLAIMS

1. A Throwing Hammer comprising of a screwed head unit and a 4mm diameter stranded wire with prefixed loops and the means for safely securing the hammer to the stranded wire and the grip, providing a safer environment for the athletes and judges in the field.

2. A Throwing Hammer as claimed in Claim 1 where the Screwed Head Unit is secured into the hammer by a nylon plug in the screw threads to resist the unscrewing during rotation.

3. A Throwing Hammer as claimed in Claim 1 or Claim 2, wherein the Centre Component of the Screwed Head Unit rotates and is sprung to resist shock.

4. A Throwing Hammer as claimed in Claim 2 or Claim 3, whereby damage to any one of the six separate strands of the 4mm diameter stranded wire is easily detectable.

5. A Throwing Hammer as claimed in Claim 1 or Claim 4 that the stranded wire with prefixed loops is easily and safely replaceable.

6. A Throwing Hammer substantially as described herein with reference to Figs. 1-3 of the accompanying drawings.