CH87627A

CH87627A - Lubricator.

Info

Publication number: CH87627A
Authority: CH
Inventors: F A Petitpierre
Original assignee: F A Petitpierre
Priority date: 1920-03-06
Filing date: 1920-03-06
Publication date: 1921-01-03

Description

       

  Graisseur.    I1 existe déjà des graisseurs à graisse  consistante dans lesquels le lubrifiant est  pressé vers l'organe à lubrifier par un pis  ton qui se meut à l'intérieur de la boîte à  graisse et ceci sous l'influence d'un ressort  qui est bandé lors du remplissage de l'appa  reil. Ces graisseurs ont un gros inconvé  nient. Celui-ci consiste en ce que, l'amenée  du lubrifiant n'est pas régulière du fait. que  la pression du ressort sur la provision de  graisse est beaucoup plus forte lorsque le  graisseur est complètement plein,     c'est-à-          dire    lorsque le ressort est bandé que lors  qu'il est vide.

   Il en résulte à certain mo  ment un     surcroit    d'alimentation en graisse  des organes à lubrifier qui se traduit par des  suintements de matière grasse et par des  pertes de cette dernière autour des organes  en question.  



  L'objet de la présente invention est un  graisseur à graisse consistante du genre de  ceux qui ont été décrits plus haut, possé  dant, pour l'amenée de la graisse à l'organe  à lubrifier, un piston qu'un ressort presse  sur la provision de graisse, mais dans lequel  la pression de ce ressort est régularisée par    un dispositif de freinage automatique dont  l'effet est d'autant. plus grand que la pres  sion du ressort est plus forte.  



  Il est montré au dessin ci-annexé et à  titre d'exemple, un graisseur construit. selon  l'invention.  



  La     fig.    1 en est une coupe axiale, et la       fig.    2 montre une autre forme     d'exécution     d'un détail.  



  a est la boîte à graisse qui se fixe sur ou  près de l'organe à lubrifier au moyen d'un  pas de vis taillé dans son pied. Le cou  vercle b est surmonté d'un     dôme    c à l'in  térieur duquel se trouve un ressort d qui  s'appuie, d'une part, sous le haut du dôme  et, d'autre part, sur un     piston        G    qui peut  voyager à l'intérieur de la boîte à graisse. Le  pourtour de ce piston est muni d'une gorge  à. l'intérieur de laquelle est introduit un res  sort     f,    qui a la forme d'un anneau fendu  et qui appuie sur la paroi intérieure de la  boîte à graisse. L'évidage de cette dernière  est conique c'est-à-dire que son diamètre  intérieur supérieur et. plus petit que  son diamètre inférieur.

   De ce fait la pres  sion du ressort sur la paroi intérieure de



  Lubricator. There are already consistent grease nipples in which the lubricant is pressed towards the organ to be lubricated by a pis ton which moves inside the grease box and this under the influence of a spring which is loaded during filling the appliance. These lubricators have a big drawback. This consists in that the supply of the lubricant is not regular due to this. that the pressure of the spring on the grease supply is much greater when the lubricator is completely full, ie when the spring is loaded than when it is empty.

   This certain times results in an excess supply of grease to the organs to be lubricated, which results in oozing of fat and in loss of the latter around the organs in question.



  The object of the present invention is a consistent grease nipple of the type described above, having, for supplying the grease to the member to be lubricated, a piston which a spring presses on the grease supply, but in which the pressure of this spring is regulated by an automatic braking device whose effect is as much. the greater the spring pressure is greater.



  It is shown in the accompanying drawing and by way of example, a constructed lubricator. according to the invention.



  Fig. 1 is an axial section thereof, and FIG. 2 shows another embodiment of a detail.



  a is the grease box which is fixed on or near the component to be lubricated by means of a thread cut in its foot. The cover b is surmounted by a dome c inside which there is a spring d which rests, on the one hand, under the top of the dome and, on the other hand, on a piston G which can travel inside the grease box. The periphery of this piston is provided with a groove. the inside of which is introduced a res sort f, which has the shape of a split ring and which presses on the inner wall of the grease box. The recess of the latter is conical, that is to say that its upper internal diameter and. smaller than its lower diameter.

   The pressure of the spring on the inner wall of the

Claims

1a grease box and therefore the resistance that this friction will oppose to the path of the piston will be all the greater as the piston is towards the top of the grease box, and therefore all the greater as the spring c is more loaded. As the piston descends, the recess increases both <I> in </I> diameter, the pressure of the spring f on the walls of the case gradually decreases with the tension of the spring. To arm the latter, we pull on the button g connected to the rod h, which is itself integral with the piston e.

This rod h is provided with a transverse pin by means of which the piston can be stopped in the position shown in FIG. 1 by turning it by a certain year, -, the after it has passed through the wall of the dome in a notch provided for this purpose.

In some machines; where the key protrusion of the rod h outside the dome of the cover may be a disadvantage., this rod is connected with the piston in the manner shown in fig. 2 so due, when the piston is released to allow it to be spring loaded, the rod can be pushed back by hand to the bottom of the grease box.

] CLAIM: Consistent grease nipple of the key type ceuz which have a piston that comes out., Bandaged during the filling of the apparatus, presses on the supply of grease to press it on the organ to be lubricated, grease characterized in that it; comprises, for the key regularization of the pressure exerted by the aforementioned spring, an automatic braking device opposing the movement of the piston a resistance all the greater as the spring tension is. stronger-.

SUB-CLAIMS 1 A lubricator according to claim, characterized in that its piston comprises at least one spring which bears against the inner pa king of the grease box and the pressure of which decreases as the piston descends. Lubricator according to sub-claim 1, characterized in that its piston has a groove in which. is housed the spring. which has the shape of a split ring, and presses against the key inner wall the grease box; the hollow of which is conical.

3 Lubricator according to sub-claim 2, characterized in that its piston is solid with a rod ending on the outside of the lubricator with a button, all to arm the spring., The latter being able to be maintained. in the armed state by a pin passing through the rod and which can be brought to press on the top of the lubricator. Lubricator according to sub-claim 3, characterized in that the rod can be driven independently of the piston in the grease supply.