CH200968A

CH200968A - Automatic chock.

Info

Publication number: CH200968A
Authority: CH
Inventors: Alexandre Herve
Original assignee: Alexandre Herve
Priority date: 1937-03-01
Filing date: 1937-03-01
Publication date: 1938-11-15

Description

Cale automatique. Lobjet de la presente invention est une cale automatique qui, fixee par exemple ä un pied de meuble, permet de compenser auto- matiquement une inegalite dans la longueur des differents pieds ou bien une denivellation du sol ou du plancher sur lequel repose ce meuble. Automatic chock. The object of the present invention is an automatic wedge which, fixed for example to a piece of furniture, makes it possible to automatically compensate for an unevenness in the length of the different feet or else for an unevenness of the ground or of the floor on which this piece of furniture rests.

Le dessin annexe represente, ä titre d'exemple, plusieurs formen d'executiou de la cale automatique selon 1'invention. The appended drawing shows, by way of example, several forms of execution of the automatic wedge according to the invention.

Dans les fig. 1 ä 4, representant une Pre- mi6re forme, les fig. 1 et 2 montrent 1e pis- ton de cette cale Jans ses deux positions extremes. In Figs. 1 to 4, representing a First form, FIGS. 1 and 2 show the piston of this wedge in its two extreme positions.

La fig. la muntre un detail ä plus Brande echelle. fig. show it a detail on a larger scale.

La fig. 3 represente 1e piston en position de travail, et La fig. 4 muntre une vue exterieure du boltier de cette cale. fig. 3 represents the first piston in the working position, and FIG. 4 shows an exterior view of the bolter of this hold.

Les fig. 5 et 6 representent en coupe une autre forme d'execution de la cale. Figs. 5 and 6 represent in section another form of execution of the wedge.

Les fig. 7 et 8 montrent en coupe une troisieme forme d'execution de la cale. La fig. 9 muntre une quatrieme forme d'execution. Figs. 7 and 8 show in section a third form of execution of the wedge. fig. 9 shows a fourth form of execution.

Les fig. 10 et 11 montrent enfin une cin- quieme forme d'execution permettant une fixation laterale de la cale. Figs. 10 and 11 finally show a fifth form of execution allowing lateral attachment of the wedge.

La cale representee en fig. 1 ä 4 com- porte un boitier 1, .de forme cylindrique (eventuellement prismatique ä section carree ou rectangulaire) que Von fixe ä un pied de meuble en 1'engageant dans une cavite 2 pre- vue dans ledit-pied. Dans ce boitier est monte un piston creux 3, mobile vertimlement, qui Porte une tige filetee 4, vissee par son extre- mite 4a dans. 1e piston. Ce filetage de la tige 4 pourrait eire remplace par une serie de fi- lets sans continuite; oü par une cremaillere. The wedge represented in fig. 1 to 4 comprises a box 1, of cylindrical shape (possibly prismatic with a square or rectangular section) which is fixed to a piece of furniture leg by engaging it in a cavity 2 provided in said leg. In this case is mounted a hollow piston 3, vertically movable, which carries a threaded rod 4, screwed by its end 4a in. 1st plunger. This threading of the rod 4 could be replaced by a series of threads without continuity; or by a rack.

Sur 1e fond du piston prend appui un ressort ä boudin 5 entourant la tige 4 et sur lequel prend appui un collier 6 pouvant cou- lisser librement 1e long de la tige filetee. Sur ce collier repose, par une extremite presen- tant une portee oblique 7, un coin 8 dont 1'extremite superieure presente une surface concave 9 pouvue de trongons de filet de meme pas que 1e Filet de la tige 4. Autour du trou 10 du boitier 1, par lequel passe la tige 4, est m6nagA ä 1'int6rieur du boitier une rainure cireulaire 11, formant rampe pour I'extAmit6 superieure du coin 8 qui est taillee en biseau, de Sorte que, lorsque ladite extr6mite du coin s'engage dann rette Borge, les tronVons de Filet de celui-ei viennent en engagement avec 1e Filet de vis de la tige 4, bloquant ainsi la tige en place et empe- chant par Suite 1e piston de remonter. On the bottom of the piston bears a coil spring 5 surrounding the rod 4 and on which bears a collar 6 which can slide freely along the threaded rod. On this collar rests, by one end presenting an oblique bearing 7, a wedge 8 whose upper end presents a concave surface 9 provided with stubs of net of the same pitch as the first thread of the rod 4. Around the hole 10 of the casing 1, through which the rod 4 passes, is made inside the casing a circular groove 11, forming a ramp for the upper extAmit6 of the wedge 8 which is bevelled, so that, when said ext6mite of the wedge is engages in the Borge rette, the thread sections of the latter come into engagement with the thread of the screw of the rod 4, thus locking the rod in place and subsequently preventing the piston from rising.

Le ressort 5, en prenant appui Sur 1e Fond du piston 3, repousse 1e coin 8 vers 1e haut et empeche ainsi 1'extr6mite sup6rieure du coin de sortir de la rainure 11 tant que ce ressort est bande. The spring 5, resting on the 1st bottom of the piston 3, pushes the 1st wedge 8 upwards and thus prevents the upper extremity of the wedge from coming out of the groove 11 as long as this spring is stretched.

Par un soulevement du meuble suffisant pour permettre au piston 3 de venir par la pesanteur dann la Position extreme inferieure, 1e ressort 5 se trouve completement dAtendu et 1'extr6mite sup6rieure du coin 8 se degage de la rainure 11; ce coin prend alors par l'ac- tion de la pesanteur, la Position inclin6e re- presentee en fig. 1, en raison de la forme obli- que de la port6e 7 par laquelle il repose Sur 1e rollier 6. Dons rette Position, les tronQons de filet de la surfaee 9 sont eompletement ecartes de la tige 4. A ce moment, si Fon repose le meuble, la Partie superieure du coin 8 vient buter contre 1e Fond du boitier 1, ä cöt6 de la rainure cireulaire 11. Le piston 3 peut done remonter librement Jans 1e boitier en comprimant le ressort 5. Le coin 8 ne peut eire remis dans sa Position aetive que par 1e Bord superieur du piston 3, dont la hauteur est calculee de faeon belle que rette remise en Position ne puisse s'effectuer avant que 1e piston 3 ne soit revenu 'a sa Position de d.6- part. By lifting the furniture sufficient to allow the piston 3 to come by gravity to the lower extreme position, the spring 5 is completely relaxed and the upper end of the wedge 8 disengages from the groove 11; this corner then assumes, by the action of gravity, the inclined position represented in fig. 1, due to the oblique shape of the surface 7 by which it rests on the first roller 6. the piece of furniture, the upper part of the wedge 8 abuts against the bottom of the case 1, next to the waxy groove 11. The piston 3 can therefore rise freely in the case by compressing the spring 5. The wedge 8 cannot be put back in its active position only by the first upper edge of the piston 3, the height of which is calculated in such a way that any return to position cannot take place before the first piston 3 has returned to its starting position.

Si, dans wette Position des Organes, 1e pis- ton 3 6tant en contact avec un appui, an Fait monter 1e boitier, la tige 4 se deplace par rap- port au coin 8, leurs Filets ebevauchant les uns Sur ]es autres sans que cependant 1'extr6- mitA superieure du coin puisse se degager de Ia. rainure 11, gräce ä la pr6sence du ressort 5. Mais 1e mouvement en sens inverse du piston par rapport au boitier est rendu im- possible, ear dann oe mouvement, la reaetion de la paroi de la rainure Sur 1e coin ahplique ce dernier etroitement Sur la tige 4 et coince leurs filets les uns contre les autres. Le coin et la tige agiment ainsi comme un enelique- tage, permettant la descente du piston, mais non pas sa remont6e; jusqu'ä ce que 1e depla- cement du piston RTI ID="0002.0276" WI="6" HE="4" LX="1453" LY="436"> soit assen Brand pour que 1e coin B äohappe de nouveau a la Borge11, comme repr6sente en fig. 1. If, in this Position of the Organs, the piston 3 being in contact with a support, an Raises the case, the rod 4 moves relative to the corner 8, their threads overlapping each other without however, the upper end of the wedge can emerge from it. groove 11, thanks to the presence of the spring 5. But the movement in the opposite direction of the piston relative to the case is made impossible, since in this movement, the reaction of the wall of the groove on the first corner ahplice the latter closely on the rod 4 and wedges their nets against each other. The wedge and the rod thus act like a ratchet, allowing the descent of the piston, but not its ascent; until the displacement of the piston RTI ID="0002.0276" WI="6" HE="4" LX="1453" LY="436"> is assen Brand so that the corner B hits again a la Borge11, as shown in fig. 1.

(?n comprend des lors 1'emploi du dispo- sitif comme eale automatique: an pose 1e meuble Sur 1e svl ou 1e plancher, en faisant rentrer 1e piston eompletement Jans 1e boi- tier. S'il existe un tcart quelconque entre 1e niveau du pied muni de la cale et le sol, 1e piston sort du boitier juaqu';a venir en con- tact avee 1e sol et, 1e coin s'apposant Ä, la mon- t6e du piston, 1e meuble est ainsi ca16 autonia- tiquement Comme 1e montre la fig. 4, le boitier Ast; muni Sur sa surface externe de griff < rs l2, realis6es par decoupage de sa paroi. Ces griffies ne s'opposent pos a l'engagement du boitier dann son logenient; mais empechent par contre qu'il en soit retir6. (? It therefore includes the use of the device as an automatic ale: an places the piece of furniture on the svl or the 1st floor, making the piston retract completely of the foot fitted with the wedge and the floor, the piston comes out of the box until it comes into contact with the floor and, the wedge being affixed to, the rise of the piston, the piece of furniture is thus self-supporting. As shown in Fig. 4, the Ast case is provided On its external surface with claws < rs l2, made by cutting its wall. on the other hand that it is withdrawn6.

Dons certains cas, 1e boitier pourrat etre supprime et son röle serait rempli par la pa- roi meme de la cavii@ m@nagk dann 1e pied du meuble. In some cases, the box could be removed and its role would be fulfilled by the very wall of the cavity in the leg of the cabinet.

Dons la form d'extcution repr6sentee en fig. 5 et 6, 1e trau du boitier 1 par Iequel passe la tige filet6e 4 est taraude de faeon que 1e Filet de e6 taaxyaudage participe au blocage de la tige 4. En effet, 1n, rAaetion exereee par la Borge 31. Sur 1e coin 8 a pour effet d'appli- quer la tige 4 du eW oppos6, Sur la paroi du trou (fig. 6). Cette forme d'execution est par ailleurs identique ä, la premihre et fonetionne de la meme fagon. In the form of execution represented in FIG. 5 and 6, the first trau of the box 1 through which passes the threaded rod 4 is tapped so that the first thread of e6 taaxyaudage participates in the blocking of the rod 4. Indeed, 1n, rAaetion exerted by the Borge 31. On the first corner 8 has the effect of applying the rod 4 of the opposite eW to the wall of the hole (fig. 6). This form of execution is otherwise identical to the first and functions in the same way.

Donsla forme d'exkution repAsent6e en fig. 7 et 8; an utilise deux coins en forme de demi-bagues 8a et 8b, munies chacune Sur leer surface externe d'un filet ou d'une den tune 9a, .respectivement 9b, cooperant avec un Filet ou une dentnre 14 du boitier. Ces coins sont repoussM vers 1e piston par un ressort 5. Loreque 1e piston 3 est dann ga Position inferieure extreme, le ressort 5 est detendu et les deux demi-bagues s'appuient par une portee oblique 15 sur un epaulement 16 du boitier 1 et sont ainsi rapprochees (fig. 8). Leurs extremites inf6rieures se trouvent donc au-dessus du piston 3"de Sorte qu'en poussant ce dernier, an refoule en meme temps les deux demi-bagues, en comprimant 1e ressort 5. Lorsque 1e piston arrive dann sa Position superieure de @depart, la Pression du ressort devient suffieante pour ecarter l'une de 1'au- tre les extremites inferieures des demi-bagues et la Partie conique 3a du piston penetrant entre elles determine 1'application des den tures 9a, 9b des demi-bagues contre celles du boitier. Le piston peut maintenant descendre pour venir en contact avec 1e sol ou 1e plan- cher pour compenser une denivellation. Les demi-bagues peuvent maintenant 1e suivre, les dentures chevauehant l'une Sur 1'autre, mais sont coincees des qu'une poussee de bas en haut agit Sur 1e piston. Un collet cireu- laire 17 cooperant avec une portee 18, empe- che que 1e piston puisee se separer du boitier dans la Position extreme inferieure de 1a fig. B. In the form of execution represented in fig. 7 and 8; year uses two corners in the form of half-rings 8a and 8b, each provided on the leer outer surface with a net or a dent tune 9a, 9b respectively, cooperating with a net or a dentnre 14 of the case. These corners are pushed back towards the first piston by a spring 5. When the first piston 3 is in the extreme lower position, the spring 5 is relaxed and the two half-rings are supported by an oblique bearing surface 15 on a shoulder 16 of the case 1 and are thus brought together (fig. 8). Their lower extremities are therefore above the piston 3" so that by pushing the latter, the two half-rings are pushed back at the same time, by compressing the first spring 5. When the first piston arrives in its upper position from @depart , the spring pressure becomes sufficient to separate the lower ends of the half-rings from one another and the conical part 3a of the piston penetrating between them determines the application of the teeth 9a, 9b of the half-rings against those of the housing. The piston can now descend to come into contact with the ground or the floor to compensate for a difference in level. The half-rings can now follow it, the teeth overlapping one On the other, but are stuck that a thrust from below upwards acts on the piston A waxy collar 17 cooperating with a seat 18 prevents the pulsed piston from separating from the housing in the lower extreme position of FIG. B.

La forme d'exeoution representee fig. 10 ei 11 ne differe de la precedente que par la forme plate du piston 3 et du coin 8e. Dans la Position extreme inferieure du piston, la denture du .coin 8c s'ecarte de celle de 1a pa- roi du boitier, dans lequel se deplace 1e pis- ton, du Fait de la butee d'un bec 19 dudit coin contre une saillie 20 du boitier. A ce moment, ce coin 8c monte Sur 1'extri#mite 21 du piston 3 et 1e deplacement de celui-ei ä 1'interieur du boitier ref pule 1e coin. A fin de course, cependant, ce dernier echappe de 1'extr6mite superieure du piston et est applique contre 1a denture du boitier par 1e pieton qui prend ap- pui par une face inclinee Sur une surface d'appui inclinee du eoin, comme an 1e voit en fig. 10. Cette cale fonetionne donc de fagon identique aux precedentes. The form of execution represented in fig. 10 and 11 differ from the previous one only by the flat shape of the piston 3 and of the wedge 8th. In the lower extreme position of the piston, the toothing of the wedge 8c deviates from that of 1a pa - king of the case, in which the piston moves, due to the abutment of a spout 19 of said corner against a projection 20 of the case. At this moment, this wedge 8c rises on the end 21 of the piston 3 and the first displacement of the latter inside the case ref pulls the first wedge. At the end of the stroke, however, the latter escapes from the upper extremity of the piston and is applied against the teeth of the case by the pedestrian which takes support by an inclined face On a bearing surface inclined from the corner, as in the case of the see in fig. 10. This wedge therefore functions in the same way as the previous ones.

Ce mode d'execution permet d'obtenir des formes plates convenant ä la fixation laterale de la. .cale automatique .Sur un pied de meu- ble, comme il a ete indique en fig. 11. La forme d'execution de 1a fig. 9 se rap- proche de la forme d'execution decrite en re- gard des fig. 1 ä 4, mais ici la tige 4 Best fixee au boitier et la rainure 11 servant ä coincer les trongons de filet du co-in 8 contre 1e filet de la tige 4 est prevue sur 1e piston 3. A la Position extreme inferieure du piston, ce coin RTI ID="0003.0277" WI="5" HE="4" LX="1072" LY="407"> est degage de cette rainure par butee kontre um epaulement 22 pAvu eur la paroi du boi- tier, de Sorte que si Von repousse le piston, il entraIIne 1e coin avec lui jusqu'ä ce que 1e ressort 5, suffisamment comprime, engage 1'extremite inferieure de ce coin dans 1a rai- nure et l'applique ainsi contre la tige filetee. Le fonctionnement est donc 1e meme que pre- c6demment. This embodiment makes it possible to obtain flat shapes suitable for the lateral attachment of the. .automatic wedge .On a furniture leg, as indicated in fig. 11. The embodiment of FIG. 9 approximates the form of execution described with regard to FIGS. 1 to 4, but here the rod 4 Best fixed to the housing and the groove 11 serving to wedge the sections of thread of the wedge 8 against the first thread of the rod 4 is provided on the piston 3. At the lower extreme position of the piston , this corner RTI ID="0003.0277" WI="5" HE="4" LX="1072" LY="407"> is disengaged from this groove by abutment against a shoulder 22 pAvu eur the wall of the case, So that if the piston is pushed back, it drags the wedge with it until the spring 5, sufficiently compressed, engages the lower end of this wedge in the groove and thus presses it against the threaded rod. Operation is therefore the same as before.

Claims

CLAIM Automatic chock, characterized in that it comprises a vertically movable piston coming to place itself in contact with the surface on which the object uruni of this chock is placed, a stop device operating by wedging of surfaces each comprising projections preventing the piston from rising under the action of the weight of the object, everything being arranged in such a way that the piston cannot be brought back towards the up to its Starting Position only after reaching its lower Outer Position. SUB-CLAIMS 1 Automatic wedge according to the claim, characterized in that the first stopping device comprises a corner having a concave surface provided with trunnions. thread with a screw fitted with the thread corresponding to the sections of the thread in the corner.

2 Automatic wedge according to claim and sub-claim 1, characterized in that the first wedge has an oblique bearing by which it comes to rest, when the first piston is in its lower extreme position, on a bearing surface, thus taking under the action of gravity a Position for which its sections of thread are gag6s of the Thread of the screw, so as to allow the piston to go up, the corner remaining in net position until the piston has reached its starting position for which the corner is brought back to its position of engagement of its thread sections with the screw.

3 Automatic chock according to claim, characterized in that the first stopping device comprises a wedge (8c) presenting an inline support surface against which the movable piston (3) bears, this wedge presenting a toothing cooperating with a tooth eorpandant of the wall of a box, in which the pedestrian moves to prevent the latter from climbing under the aetion of the weight of the object. , 4 Automatic chock according to claim, earaoterisoe by a movable collar on which rests at the hands a corner that comprises the first stopping device and by a sausage remart bearing, dune bet, on this oollier and; else bet; on the plunger.