GB2183524A

GB2183524A - A device for applying an impact

Info

Publication number: GB2183524A
Application number: GB08530416A
Authority: GB
Inventors: Thomas William Dodge
Original assignee: Individual
Current assignee: Individual
Priority date: 1985-12-10
Filing date: 1985-12-10
Publication date: 1987-06-10
Also published as: GB2183524B; GB8530416D0

Abstract

A device for applying an impact has a main impacting body 1 having a blind bore 2 internally shaped to correspond to the cross section of the object (e.g. posts) to be driven into the ground. The body 1 is provided with arms 4 to enable the operator to reciprocate the device over an upper length of the object to effect the driving process. The device is extremely useful in driving angle-iron fence posts for example, where the use of an ordinary hammer tends to damage the top of the post and maintenance of verticality is difficult. The device conveniently removes these problems. For driving in angle-iron posts the impacting body 1,which is made of metal, is formed in the shape of 90 DEG angle-iron. The opening to the bore 2 terminates in advance of the end E of body 1 to form a positioning lip L which is used to position the device on the top of the post. <IMAGE>

Description

SPECIFICATION A device for applying an impact Field ofinvention The present invention relates to a device for applying an impact particularly to such a device which may be used manually to drive angle-iron posts into the ground during fencing construction.

Background art When constructing fencing using angle-iron posts, it is the present day method simply to force the posts into the ground with blows delivered by a sledge hammer.

Apart from the considerable strenuous effort required, the use of a sledge hammer often results in damage to the top of the post receiving the impact, the post not being vertical at the end of the driving sequence, and the need on many occasions to involve the use of a pinch bar to ease penetration with the consequence that the post will not be held as firmly in the ground as it otherwise would be.

Summary ofthe invention It is an object ofthe invention to obviate the deficiencies of the prior art by providing a device for driving elongate objects such as angle-iron posts into the ground by manual means not involving the use of a sledge hammer or othersimilarimpact delivering devices, which have in-built disadvantages as discussed above.

According to the invention there is provided a deviceforapplying an impact to drive an elongate object such as a fencing post into the ground comprising an impacting body, the body having a closed bore comparable in cross-section with the cross-section ofthe object, or at least a portion thereof no longerthan the depth of the bore, such that a length of one end of said object to which impacts are to be applied may be received within the bore, and means permitting the impacting body manuallyto be moved reciprocally over said length to drivethe object into the ground.

Such a device is most admirably useful for dealing with angle-iron posts used in the fencing industry.

In this case the bore would have a cross-section corresponding to that of the angle-iron. The art of driving such posts into the ground using the present inventive device may be readily accomplished manually and with comparatively little effort compared with present methods, without the need to prepare a starter hole with a punch bar orsimilar, and the expenditure of unnecessary concern as to the post having vertical alignmentwhen firmly positioned intheground.

Other features and advantages ofthe invention will become apparent from the description which follows of a predered way of putting the invention into effect.

Briefdescription ofthe drawings One preferred method of performing the invention will now be described by way of example with reference to the accompanying drawings wherein.

Figure lisa perspective view of a device for driving angle-iron fencing posts into the ground.

Figure2 is a view looking along the arrowAin figure 1.

Best modems of carrying out the invention The manually operable impact delivering device shown in the drawings comprises a heavy metal impacting body 1 composed of a main body part M in the shape of 90 angle-iron, although this is not essential, to which is formed a blind bore 2 closed by a 5 mm thich metal plate 3.

The bore 2 has a cross-section corresponding to the cross-section of the objects to be driven into the ground in this case being angle-iron fencing posts.

The opening to the bore 2terminates in advance of the end E of body part 1 to form a positioning lip Lthe object of which will be explained later.

The normal range of thickness of angle-iron fencing post is 38to 65 mm and accordingly a range of blind bores 2 would be available such that preferably the clearance between the internal walls of a respective blind bore and the fence post received therein is minimal, consonantwithfrictional freedom between the opposing surfaces when the impacting device of the invention is being used.

A pair of tubular lifting arms 4 are attached to the main body 1 both lying in the same plane.

In use the arms 4 are gripped respectively by the hands of the operator, and the implement lifted to engage the bore overthetop portion of an angle-iron post push-inserted loosely in the ground, until the top end of the post abuts the metal plate 2.

Positioning ofthe implement on thetop ofthe post is aided by the lip L.

The body 1 is then reciprocated manually by the operator to deliver intermittent impacts to the top of the post, which is then driven into the ground to a depth where the required post height and firmness is established.

Thefactthatthere is minimum clearance between the post and the internal walls of the receiving bore 2, and the direction ofimpact at each blow is in axial alignmentwiththepost, meansthatit is much easier to maintain the post vertical as it is being struck compared with the use of a sledge hammerwhere consistency of directional impact and the force applied during impact, is lacking.

1. A device for applying an impactto drive an elongate object such as a fencing post into the ground comprising an impacting body, the body having a closed bore comparable in cross-section with cross-section of the object, or at least a portion thereof no longerthan the depth ofthe bore, such that a length of one end of said object to which impactsareto be applied may be received within the bore, and means permitting the impacting body manually to be moved reciprocally over said length to drivethe object intothe ground.

2. A device as claimed in claim 1 wherein said means comprises a pair of arms attached to said

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

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A device for applying an impact Field ofinvention The present invention relates to a device for applying an impact particularly to such a device which may be used manually to drive angle-iron posts into the ground during fencing construction. Background art When constructing fencing using angle-iron posts, it is the present day method simply to force the posts into the ground with blows delivered by a sledge hammer. Apart from the considerable strenuous effort required, the use of a sledge hammer often results in damage to the top of the post receiving the impact, the post not being vertical at the end of the driving sequence, and the need on many occasions to involve the use of a pinch bar to ease penetration with the consequence that the post will not be held as firmly in the ground as it otherwise would be. Summary ofthe invention It is an object ofthe invention to obviate the deficiencies of the prior art by providing a device for driving elongate objects such as angle-iron posts into the ground by manual means not involving the use of a sledge hammer or othersimilarimpact delivering devices, which have in-built disadvantages as discussed above. According to the invention there is provided a deviceforapplying an impact to drive an elongate object such as a fencing post into the ground comprising an impacting body, the body having a closed bore comparable in cross-section with the cross-section ofthe object, or at least a portion thereof no longerthan the depth of the bore, such that a length of one end of said object to which impacts are to be applied may be received within the bore, and means permitting the impacting body manuallyto be moved reciprocally over said length to drivethe object into the ground. Such a device is most admirably useful for dealing with angle-iron posts used in the fencing industry. In this case the bore would have a cross-section corresponding to that of the angle-iron. The art of driving such posts into the ground using the present inventive device may be readily accomplished manually and with comparatively little effort compared with present methods, without the need to prepare a starter hole with a punch bar orsimilar, and the expenditure of unnecessary concern as to the post having vertical alignmentwhen firmly positioned intheground. Other features and advantages ofthe invention will become apparent from the description which follows of a predered way of putting the invention into effect. Briefdescription ofthe drawings One preferred method of performing the invention will now be described by way of example with reference to the accompanying drawings wherein. Figure lisa perspective view of a device for driving angle-iron fencing posts into the ground. Figure2 is a view looking along the arrowAin figure 1. Best modems of carrying out the invention The manually operable impact delivering device shown in the drawings comprises a heavy metal impacting body 1 composed of a main body part M in the shape of 90 angle-iron, although this is not essential, to which is formed a blind bore 2 closed by a 5 mm thich metal plate 3. The bore 2 has a cross-section corresponding to the cross-section of the objects to be driven into the ground in this case being angle-iron fencing posts. The opening to the bore 2terminates in advance of the end E of body part 1 to form a positioning lip Lthe object of which will be explained later. The normal range of thickness of angle-iron fencing post is 38to 65 mm and accordingly a range of blind bores 2 would be available such that preferably the clearance between the internal walls of a respective blind bore and the fence post received therein is minimal, consonantwithfrictional freedom between the opposing surfaces when the impacting device of the invention is being used. A pair of tubular lifting arms 4 are attached to the main body 1 both lying in the same plane. In use the arms 4 are gripped respectively by the hands of the operator, and the implement lifted to engage the bore overthetop portion of an angle-iron post push-inserted loosely in the ground, until the top end of the post abuts the metal plate 2. Positioning ofthe implement on thetop ofthe post is aided by the lip L. The body 1 is then reciprocated manually by the operator to deliver intermittent impacts to the top of the post, which is then driven into the ground to a depth where the required post height and firmness is established. Thefactthatthere is minimum clearance between the post and the internal walls of the receiving bore 2, and the direction ofimpact at each blow is in axial alignmentwiththepost, meansthatit is much easier to maintain the post vertical as it is being struck compared with the use of a sledge hammerwhere consistency of directional impact and the force applied during impact, is lacking. CLAIMS

2. A device as claimed in claim 1 wherein said means comprises a pair of arms attached to said impacting body and lying in the same plane.

3. A device as claimed in any proceeding claim wherein said bore is of angle-iron cross-section.

4. Adeviceforapplying an impact substantially as hereinafter described with reference to and as illustrated in the accompanying drawings.