SE193819C1

SE193819C1 -

Info

Publication number: SE193819C1
Authority: SE
Publication date: 1964-01-01

Description

Prioritet begiird f ran den 17 november 1959 oat den 23 ;Tali 1960 (Finland) Redskapsskaft, exempelvis yxskaft, ha hit-tills vanligen tillverkats av tra. Delta material har en begransad hallfasthet beroende t. ex. ph snedgaende fiberstrackning, kvistar och andra liknande egenskaper has materialet. Ett yxskaft av tra brytes latt av, och det fir kansligt for temperaturvfixlingar. Det ar aven svart att stabilt och sakert fasta ett traskaft vid yxan. Brukligt är att traskaftets dude medelst ett handverktyg gives en shdan form att an-den kan tradas i yxans 6ga varefter trakilar indrivas i skaftets ande som dd fastspanner skaftet vid yxan. Detta kilforband är mycket kansligt for fukt och temperaturvaxlingar, och det har ofta hant, att efter det att yxan forvarats pa ett torrt och varmt stalk, yxan sedan vid anvandningen lossnat fran skaftet och fOrorsakat olyckor. Priority requested from 17 November 1959 to 23; Tali 1960 (Finland) Tool shafts, such as ax shafts, have hitherto usually been made of wood. Delta materials have a limited hall strength depending on e.g. pH oblique fiber stretching, twigs and other similar properties have the material. An ax shaft of wood is easily broken off, and this is likely to cause temperature changes. It is also black to stably and securely attach a cloth shaft to the ax. It is customary for the dude of the threshing shaft to be given a shape by means of a hand tool so that the duck can be threaded into the shaft 6, after which tracheales are driven into the spirit of the shaft which then clamps the shaft to the ax. This wedge joint is very sensitive to moisture and temperature fluctuations, and it has often happened that after the ax has been stored on a dry and hot stalk, the ax has since detached from the shaft and caused accidents.

Vid ett redskapsskaft enligt foreliggande upp finning aro dessa olagenheter avhjalpta genom att det givits de i patentanspraket 1 angivna kinneteeknen. In the case of a tool shaft according to the present invention, these imperfections are remedied by giving the cheek features specified in patent claim 1.

Pa bifogade ritning visas en yxa med pasatt, enligt uppfinningen utfort shaft, samt fastsattningen av yxan vid skaftet enligt uppfinningen. The attached drawing shows an ax with a fitting, according to the invention made shaft, and the attachment of the ax to the shaft according to the invention.

Fig. 1 visar en yxa med sa kallat dubbelkoniskt 6ga la—lb med pasatt skaft. 1 är sjalva yxan, 3 är den yttre delen av skaftet som ar tillverkat av ett mjukare, latt formbart material, exempelvis plast. 5 är den inre delen av skaftet, som är tillverkat av ett styvare och hardare material, exempelvis stal. Den inre delen 5 ligger inbaddad 1 den yttre mjukare delen 3 och har i start sett skaftets form och strackning. Vid den inre delens 5 fria ande fir en bricka 5a fast, som hindrar, att skaftets mjukare yttre del 3 forskjutes i sin langdriktning, samtidigt som brickan 5a utgor ett fixeringsstod for att Ulla den inre delen 5 pa sin plats vid tillverkningen da den sa att saga inhakas i den yttre delen 3, For delta arida mdl kan brickan 5a vara forsedd med ett eller flera hal 5b fOr skruvar, tappar eller liknande fastmedel. Vid den inre delens 5 motsatta Slide ar en mutter del 6 fast, forsedd med inre ganga. 9 Sr en bricka med en anliggningskant 9a, som fir sa formad att den anligger mot kanten av yxans aga. Genom brickan 9 passerar en skruv 7, som är ingangad i mutterdelen 6. Brickan 9 Sr forsedd med en forsankning for skruvens 7 skalle for att inga utsthende kanter skola finnas som 15ff fastna i kvistar o. d. Skruven 7 kan Sven vara forsedd med forsankt skalle. Fig. 1 shows an ax with so-called double-conical 6ga la — lb with a fitted shaft. 1 is the ax itself, 3 is the outer part of the shaft which is made of a softer, easily moldable material, for example plastic. 5 is the inner part of the shaft, which is made of a stiffer and harder material, for example steel. The inner part 5 is embedded in the outer softer part 3 and has initially seen the shape and tension of the shaft. Attached to the free end of the inner part 5 is a washer 5a, which prevents the softer outer part 3 of the shaft from being displaced in its longitudinal direction, at the same time as the washer 5a forms a fixing pillar for the inner part 5 to be in place during manufacture. saw is hooked into the outer part 3, For delta arida mdl, the washer 5a may be provided with one or more hales 5b for screws, pins or similar fasteners. At the opposite slide of the inner part 5 a nut part 6 is fixed, provided with an inner thread. 9 Sew a washer with an abutment edge 9a, which is shaped so that it abuts against the edge of the ax '. A screw 7 passes through the washer 9, which is inserted into the nut part 6. The washer 9 is provided with a recess for the head 7 of the screw 7 so that no protruding edges should be present as 15ff stuck in twigs, etc. The screw 7 can be provided with a recessed head.

Vid ett dubbelkoniskt yx.oga enligt fig. 1 insattes en kilformig, foretradesvis med langsghende slits forsedd hylsa 8, som utfyller den ena konan lb i yxogat. Derma kilhylsa 8 in-drives medelst skruven 7 och briekan g. Ph detta satt utfylles yxogat helt och ett stadigt skruvforband erhalles I ,det fall att yxan Sr av den modell som liar ett Oga med endast en kona enligt fig. 2, bortfaller kilhylsan 8. I vardera fallet erhalles ett stadigt forband som latt kan efterspannas medelst skruven 7. Genom att den yttre skaftdelen 3 Sr gjord av ett relativt mjukt material formar sig skaftet lag efter yxogats form. In a double-conical axial eye according to Fig. 1, a wedge-shaped sleeve, preferably provided with a longitudinal slot, is inserted, which fills one cone 1b in the axial hole. This wedge sleeve 8 is driven in by means of the screw 7 and the brie g. When this is done, the ax eye is completely filled and a firm screw joint is obtained, in the case that the ax Sr of the model which is an Oga with only one cone according to Fig. 2, the wedge sleeve 8 is omitted. In each case, a stable joint is obtained which can be easily retightened by means of the screw 7. Because the outer shaft part 3 is made of a relatively soft material, the shaft is shaped according to the shape of the ax.

Delen 4 i figurerna Sr en hylsformad del som dels utgor ett splitterskydd som forhindrar att vid huggning kvistar och annul skadar den yttre skaftdelens yta. Hylsan 4 och dess ffirlangning 4c stracker sig ett stycke in i yxans oga, och utgor ph detta sfitt ett runt skaftet gaende stodjande underlag for yxogats kant. Skaftet enligt uppfinningen kommer att sitta stadigt -vid yxan genom att yxogats kant inte direkt anligger mot den av konstmassa gjorda yttre skaftdelen 3. Hylsan 4 Sr enligt fig. 1 vid den ande som stracker sig i riktning frail yxan snedskuren, och dess nedre kant 4a har en langre strackning an dess Ovre kant 4b, for att skaftet skall fa den ratta fja.dringen.- Hylsah 4 fyller salunda tvenne 2— — uppgifter; den bildar dels ett splitterskydd, och dels ett som stod runt skaftet 3 gh.ende melIanlagg mellan yxans 1 oga och den yttre skaftdelen 3. Fiera olika detaljutformningar kunna tankas mom uppfinningens ram, sasom att brickan 9 saknar anlaggningskant men gores nagot tjockare. The part 4 in the figures is a sleeve-shaped part which partly forms a splinter protection which prevents the surface of the outer shaft part from being damaged by chopping twigs and annulus. The sleeve 4 and its flange 4c extend a bit into the eye of the ax, and this sfitt forms a standing support for the edge of the ax going around the shaft. The shaft according to the invention will sit firmly -at the ax by the edge of the ax not abutting directly against the outer shaft part 3 made of artificial mass. The sleeve 4 Sr according to Fig. 1 at the spirit extending in the direction of the ax obliquely cut, and its lower edge 4a has a longer stretch on its upper edge 4b, so that the shaft will have the right suspension.- Sleeve 4 thus fills two 2— - tasks; it forms partly a splitter protection, and partly one which stood around the shaft 3 gh.ende intermediate abutment between the axle 1 eye and the outer shaft part 3. Several different detailed designs can be thought of within the scope of the invention, such as that the washer 9 has no abutment edge but is made somewhat thicker.

Claims

The patent s pr fik:

Utensil shaft, especially ax shaft, of plastic with a reinforcing tube of metal extending through the shaft, characterized in that the cone (5a, e.g. ax ax) of the shaft (5, 3) conical, for insertion into the shaft (1a) shaft shaft (1a, e.g. ax hole) surrounded by a metal sleeve (4), which together with the shaft end Sr is partly compressible in the shaft shaft of the implement and partly forms a protective plate ph the nearest part of the shaft to the part of the shaft.

Tool shaft according to claim 1, characterized in that one end of the sleeve (4) is cut obliquely, so that it reaches further out the shaft (5, 3) on its underside than on its upper side.

Tool shaft according to the patent claims, the tube (5) in the free spirit of the shaft is closed with 1-2, characterized in that the reinforcing rod has a welded metal plate (5a), which is four times embedded in the surrounding plastic material (3).

Tool shaft according to patent claims 1-3, characterized in that the spirit Sr of the reinforcing tube (5) in the shaft housing (1a) is provided with a sleeve (6) with internal passages for receiving a screw (7) in and of itself, which hailer a roof plate (9). abutting against the edge of the shaft hole.

Tool handle according to claim 4, characterized in that the middle part Sr of the roof plate (9) is provided with a recess for the screw head. Request publications: Patents Iran Sweden 131311; United States 1,366,030, 1,518,259 and 1,692,490.