Glass-breaking device / axe

Abstract: A glass-breaking device/Axe comprising a handle 9, integral glass shield 4, a part radial blade containing a number of formed and raised angular projections 2 together with formed part radial weights 3 to be attached therein if so desired. A "transfer" for use with the said device 12/13. The blade being used for striking the glass at a variety of angles fig 9/10/11. The part radial blade 2 protrudes away from the integral body of the device 4 of a distance relative to the striking angle fig 9/10/11 to enable contact to be made with the glass 10 prior to contact with the device body 4. After such contact and the breaking of the glass the additional width of the device body 4, act as a secondary device for removing/pushing the said glass 10 away once broken. The device has been so designed as to allow additional weights 3 and blades 2 of varying thickness and shape and of varying depth to be utilized if so desired. The device allows for its use in both lateral and longitudinal plains relative to the face of the glass. The device being constructed of a suitable material as to allow the device to break single or multiple glass panes 10 of similar or varying thickness without loss of integrity. The device being so designed, as to be deemed suitable for use by a person such as a child or adult. Operational use is in all planes and usable in both left and right handed directions relative to the user. Toughened glass requires the user of glass breaking devices to strike the glass 10 in certain areas for maximum effect, namely the extreme edges and corners (this forming the weakest point at which the glass breaks easily). Suitably sized "transfer(s)" fig 12/13, with appropriate means of attachment to the glass (glue or similar compound) with information (such as an arrow) is contained therein for the position on which the glass should be struck by the user, when the device herein or similar devices are to be used.

Description: This invention relates to a Glass-Breaking device. Glass-breaking devices are normally associated with emergency escape through a glazed aperture. This means of escape is usually required because of an accident of some nature, such as fire, chemical spill, flooding or other reason where there is direct threat to life through entrapment. I.E: Vehicles, buildings or other enclosed spaces. As an example device, the Rail Network provides a steel hammer for use in its rolling stock. Prior Art: DE 4300471 is a known device, having a shaft, a handle and a hammer flash on the handle, away from the hammerhead. The head of the flash is constructed in such a way as to have a point at the end. Due to the design, limited point contact with the glass will result should the striking angle be moved away from the longitudinal axis of the hammerhead relative to the glass, resulting in failure of the said device to break the glass when in use. Summary of the invention The present invention consists of a hammer according to claim 1, further preferred embodiments are set out in the subsequent claims. The present invention overcomes the problem of limited point contact should the striking angle be moved away from the longitudinal axis of the hammerhead relative to the glass, with the provision of more than one angular point, thus allowing varying angular point contact relative to the longitudinal axis to be obtained. Utilizing the handle (9), the user propels by the hand the whole towards the glass pane surface, the raised projections making contact with the glass surface first which damages the surface of the glass pane and leads to failure and smashing of the glass pane. The invention being suitable for other applications and is therefore, not restricted to glazing. A specific embodiment of the invention will now be described by way of examples and reference to the accompanying drawings in which. SHEET 1/6 Shows a view of the front, side and rear of an example device. SHEET 2/6 View showing front, side and rear of an example device with multiple blades fitted to the head of the device SHEET 3/6 Views of the blade, weights and blade/weight sub assembly. SHEET 4/6 Views showing an example of angles when striking the glass SHEET 5/6 Views showing alternative construction of an example device with extended glass shield. SHEET 6/6 View shows "transfer" for window/glass user advice. Referring to Sheet 1/6. Fig 1 The example device comprises of a body (4), a blade (2), a weight (3), and a retaining device such as a nut and bolt (1). The view shows the glass shield (4), which is an integral part of the body of the device. Fig 2 A side view of the device showing the body and glass shield (4), the handle (9), recess within the body (5), retaining devices (1) and the blade (2). Fig 3 The rear view of the device body (4), and view of the formed handle (9). Referring to Sheet 2/6 Fig 4 The device showing the front view with multiple blades (2), retaining device (1) and body/glass shield (4). Fig 5 As fig 2 with multiple blades (2) added. Fig 6 As fig 3. Referring to Sheet 3/6 Fig 7 Blades (2), together with the formed and weights (3) and retaining holes (1). Fig 8 A blade (2) and weights (3) as one assembly. Referring to Sheet 4/6 Fig 9 A striking angle and glass. Fig 10 As fig 9, altered striking angle. Fig 11 As fig 9, altered striking angle. Referring to Sheet 5/6 Fig 12 The device being modified and adapted to show a variation of the body/glass shield (4) and handle (9). Referring to Sheet 6/6 Fig 13/14 Two variations of a glass advice transfer. Please refer to drawings 1 through 6, for additional technical information. DRAWING REFERENCE INDEX Reference Number Description 1 Retaining device 2 Blade with projections at the perimeter 3 Weights 4 Body of the device 5 Cavity within the device body 6 Spare -- 7 Spare -- 8 Spare -- 9 Handle of the device 10 Glass

Claims: A glass breaking device comprising a body (4), and a blade (2), wherein; said body is incorporating a longitudinally shaped handle (9), and said blade is protruding away from the body in a direction generally radially of a longitudinal axis of the handle (9), characterised in that the said blade is incorporating more than one raised projection at the outer perimeter thereof. A device as claimed in claim 1, wherein the projections form a keen edge or point. A device as claimed in claim 1 or 2, wherein an additional blade or blades (2), or additional weight or weights (3) are added. A device as claimed in claim 1, 2 or 3, wherein the blade (2), the body (4), and handle (9), are combined and formed as a single entity. A device as claimed in claim 1, wherein the body (4) and handle (9) incorporates a glass shield, for protection of the hand, and is attached at the upper and lower portion of the body (4) and handle (9), optionally, the glass shield is formed as an integral part of the body (4) and handle (9). A device as claimed in any preceding claim, wherein the outer perimeter of the blade (2) is curved and the raised projections are formed or attached thereon. A device as claimed in claimed in any preceding claim, wherein the body (4) or handle (9) or combination, incorporates a sharp blade suitable for cutting material. A device as claimed in any preceding claim, wherein the device incorporates a safety warning device, audible or otherwise, that will be activated during use or when tampered with, and optionally incorporates a light sensitive material/paint that will glow in the dark or when ordinary daylight diminishes. A device as claimed in claim 3, wherein the blade or blades (2), and weights (3) if so desired, are coupled within a cavity of the body (4). A device as claimed in claim 1-3, or 9, wherein a coupling means (1) is provided for coupling the blade to the body (9).

Inventors: RHODES A, RHODES, A.
Applicants: RHODES A, RHODES, A.
Application year: 2000
Main classification: B25D1
IPC codes: A62B3, B60J1