CH265773A

CH265773A - Extendable metal prop.

Info

Publication number: CH265773A
Authority: CH
Inventors: Rivkine Henri
Original assignee: Rivkine Henri
Priority date: 1947-12-01
Filing date: 1947-12-01
Publication date: 1949-12-31

Description

  

      Etai    métallique extensible.    L'invention a pour objet un étai métallique       extensible.     



  Une forme d'exécution de l'objet. de l'in  vention est décrite, à. titre d'exemple, en re  gard du dessin annexé dans lequel:  La     fig.    1 est une vue en élévation, la     fig.   <U>9</U>  une coupe selon la ligne     A-A    de la     fig.    1.

    L'étai représenté comprend un socle 1 soli  daire d'un montant. 2 constitué par un fer en  <B>U</B> à la partie supérieure duquel est. soudé un       second    fer 3 en<B>U</B> de     hauteur    réduite par     rap-          port    à celle du montant, ces fers étant dispo  sés de façon à former un boîtier rectangulaire  de coulissement pour un support mobile 4  constitué par un fer en<B>I</B> et qui, à sa partie  inférieure, présente un collier de coulissement  5 entourant le montant     \?.    Dans ce     supprwt,          sont    prévus des trous 6, alors que le montant.  2 présente deux ouvertures semblables en re.

    gard l'une de l'autre, dont. l'une est. me en ï  sur la     fig.    1. Ces ouvertures sont destinées à  laisser passer une tige 8 qui traverse le mon  tant 2 et le support. 4 en. passant dans l'un  des trous 6.  



  La tige 8 et, par suite, le support 4 peu  vent être déplacés au moyen d'un levier     \1    à  fourche 10 articulé en 11 sur une pièce 1"  soudée au boîtier de coulissement.. Dans cette  pièce 12 sont ménagées des fentes 13 desti  nées à recevoir, l'une on l'autre, un coin cons  tituant un arrêt qui s'oppose au mouvement  du levier et, par suite, maintient le support 4  dans une position déterminée.    En pratique. la hauteur du montant. \_'  peut être, par exemple,     d'environ    1,60 m, la  hauteur du boîtier étant. de     \?5    cm.



      Extendable metal prop. The subject of the invention is an extendable metal prop.



  An embodiment of the object. of the invention is described at. by way of example, with reference to the appended drawing in which: FIG. 1 is an elevational view, FIG. <U> 9 </U> a section along the line A-A of fig. 1.

    The prop shown comprises a base 1 solidary of an amount. 2 consisting of a <B> U </B> iron at the top of which is. welded a second iron 3 in <B> U </B> of reduced height compared to that of the upright, these irons being arranged so as to form a rectangular sliding box for a movable support 4 constituted by an iron in <B> I </B> and which, at its lower part, has a sliding collar 5 surrounding the upright \ ?. In this supprwt, holes 6 are provided, while the amount. 2 has two similar openings in re.

    keep each other, including. one is. me in ï in fig. 1. These openings are intended to allow a rod 8 to pass through which passes through the frame 2 and the support. 4 in. passing through one of the holes 6.



  The rod 8 and, consequently, the support 4 can be moved by means of a fork lever \ 1 10 articulated at 11 on a part 1 "welded to the sliding housing. In this part 12 are formed slots 13. intended to receive, one or the other, a wedge constituting a stop which opposes the movement of the lever and, consequently, maintains the support 4 in a determined position. In practice, the height of the upright. This can be, for example, about 1.60 m, the height of the housing being 5 cm.

Claims

CLAIM Extendable metal prop, characterized in that it comprises an upright consisting of a <B> U </B> iron, the upper part of which is provided with a second <B> U </B> iron of height d picks compared. to that of the upright, these -'ers being arranged so as to form a sliding housing for a movable support consisting of a profiled iron, said support being movable by means of a lever articulated on a part integral with said upright, way. making it possible to lock this lever in order to fix the position of said support.

SUB-CLAIMS: 1. Forestay according to claim, characterized in that the second iron is. welded to the upright to constitute the sliding housing, and in that the support has, at its lower part, a collar surrounding said upright, said lever acting on the support through the intermediary of a rod passing through the upright and the support, the locking means being constituted by a wedge which can be engaged in one or the other of the slots of said part, the latter being made integral with the upright by welding. 2. A prop according to claim and sub-claim 1, and as described with reference to the accompanying drawing.