DE1880956U - HANDLE FOR SPADE, SHOVEL, FORK OR. DGL. TOOLS. - Google Patents

Description

i7 723 * 6/29/63)

I A R B W B R K E H O E G H S T AG formerly Master Xucius & Brüning

Prankfurt (M) -Hoechst, June 11, 1963 Dr. He / St

AIIAU I
Utility model registration Gm

Plastic handles for handles of digging and shoveling tools

Tools such as shovels, spades and forks usually have a wooden handle, in rare cases one made from a metal tube.

often

At the upper end of these stems there is / for better handling a T- or D-shaped handle. In the majority of cases, these handles are also made of wood or metal. For a short time, such handles have also been made from suitable thermoplastics using the injection molding process manufactured. Rigid polyolefins are particularly suitable for this, such as polypropylene or hard polyethylene. These plastic handles have the advantage over wooden handles that they are always of the same shape and quality in different colors can be manufactured and do not tend to rot «The advantage over lacquered iron handles is the lower weight and in greater corrosion resistance,

The handles are attached to the wooden handles so that they · with With the help of a sleeve located at its lower end, which 'fits exactly on the handle, firmly inserted into this and nailed down will. In some cases, additional gluing is also carried out, or you can leave the handles with the help of undercuts snap into corresponding hats on the handle. unfortunately can Polyolefins only because of their good resistance to solvents

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ill stick "There is virtually only one sticker flaps but in severe mechanical stress of the ^~: Tools in the long run is not enough. The handles, which are attached to the handles by nails, also loosen during use 'after' a long period of time, so that the tool is no longer so easy to use. "

It has now been found that a very strong and long-lasting connection between the handle and handle of digging and shovel tools is possible achieved by spraying the handle onto the handle in the tool of the injection molding machine. For this purpose is the Place a precisely fitting wooden or metal handle in a corresponding recess in the injection molding tool so that when injecting of the plastic in the form of the end of the stem up to a certain length of preferably over 40 mm in a sleeve-like manner is flowed around. The liquid cow matter, preferably a ' Hard polyolefin, penetrates the surface of the pores of the wood and with this or with a corresponding overmolded metal handle creates a solid, practically inseparable connection «

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When using a metal handle, this must be closed at the upper end be. For better fixation it can also advantageously at the points where the plastic flows around it, longitudinal and transverse markings in the form of grooves, cams etc. »included in order to avoid later shifting and twisting of the molded plastic handle during use.

As a hard polyolefin especially isotactic polypropylene and rigid polyethylene is having a density of / 0.94 g / ää.cm advantageous is also the use of a polypropylene by admixing 5 - of an amorphous polyolefin has been made impact-resistant cold fi 30th As amorphous polyolefin suitable for mixing in, polyisobutylene may be mentioned as well as predominantly

amorphous copolymers of ethylene with one or more its higher homologues.

Connections made in this way between the handle and shovels, spades, forks and similar tools are extremely durable and won't wobble or loosen even after prolonged use.

Claims (2)

Rä. 584 942 * 9/12/63 24 146 / 45a Gbm lrankfurt (lain) -Hoeehst, 9th September 1963 / 9th S 602 Dr. Ge/br New protection talks: 1. Handle for digging and shoveling tools, characterized in that that the handle (1, 2) consists of a thermoplastic material "which is attached to a handle made of wood or metal is sprayed on. 2. Handle for digging and shoveling tools according to claim 1, characterized in that the handle consists of hard polyolefin. Kleweis: Dtese Unterloge Sohjfronsp.) Lsi the uitotzl submitted, they which "from the Wa? - tesuna de, origin: ch, in ^ eichfen Unrer.egen. D = e rec, _t :; the bleeding is the deviation is. not gppru.r D- u «DrOnallch einjereichian U:, - eHc _S en are .n the office.okten. Se körmen ieder.eü without further interest gsbüh.dv ^ can be viewed. At the request thereof ouch Fotokopren or five are r-otive * u Obliohen prices g * ii _e fert German patent office, Gebfcuchsmusterstellö.