Stoves and furnaces – Stoves – Cooking
Patent
1988-08-15
1990-01-23
Lazarus, Ira S.
Stoves and furnaces
Stoves
Cooking
126 43, F24C 500
Patent
active
048951323
DESCRIPTION:
BRIEF SUMMARY
This invention relates to an apparatus for burning spirit or similar liquid fuel having a fuel container filled with a fuel absorbing mass with partly exposed surface from which the fuel being burned evaporates and a draught- or burner tube being so arranged with respect to the exposed surface that inlet flow of combustion air into the tube is safeguarded, the fuel container being separate and removable from the remaining parts of the apparatus and having top-, bottom- and side walls enclosing the absorbing mass, the top wall for providing the exposed surface comprising a central opening which is limited by an edge part of the top wall extending upwards with respect to the top surface of the container, the edge part having an annular upper surface with which a movable control and extinguishing device cooperates by partly or completely covering the opening for control and extinguishing purposes.
A general purpose of the invention is to achieve an arrangement facilitating the burning out of spirit vapors and remaining flames if any between the control device and the heat protective metal plate which is arranged to protect the heat sensitive parts of the fuel container.
A further purpose of the invention is to create an arrangement preventing too large power from being taken out.
According to a first aspect of the invention an apparatus of the type described above is characterized by a seat ring which is placed between the annular upper surface and a control- end extinguishing plate at such a distance above a heat protective metal plate surrounding the upwards extending edge part for completely or partly covering the opening, that spirit vapors and remaining flames if any are burned out between the control- and extinguishing plate and the heat protective metal plate above the lastmentioned. The seat ring may have a smaller inner diameter and/or a larger outer diameter than the upwards extending edge part. The seat ring can also be supported by the heat protective metal plate for instance at a fixed distance above the later which mainly corresponds to the height of the upwards extending edge part, or the seat ring can be resiliently supported by the heat protective metal plate for instance be fastened to it by means of leaf springs.
According to another aspect of the invention the control and extinguishing device comprises at least two mainly segment- or crescent shaped plates which are movably linked to each other and connected to a control means which is arranged for allowing variation of the opening surrounded by the plates between completely closed position and a maximal opening position.
The plates can each, via an arm, be pivotally connected to the heat protective metal plate each at pivot point placed outside the plate.
At each pivot point a follower link is connected to the corresponding arm, the follower links at two adjacent pivot points engaging each other in order to achieve a syncronuos movement of the associated plates towards or away from each other when operating one of the follower links by means of an outer control device.
In order to safeguard a simple and suitable control of the segment- or crescentshaped plates the follow link relating to one of the arms comprises the pivot point of said arm between the connecting point of the link with the arm and the link connecting point with the other follower link, the first follower link supporting a control arm with which the control device is engaged in order to turn the link about said pivot point.
An apparatus for burning spirit or similar liquid fluids having a fuel container filled with a fuel absorbing mass with partly exposed surface from which the fuel which is being burned evaporates whereby a draught or burning pipe is so arranged with respect to the exposed surface that drawing of combustion air into the tube is safeguarded and the fuel container comprises a central opening which is intended to partly or completely be covered by a control- and extinguishing device, according to a further aspect of the invention characterized in that a rem
REFERENCES:
patent: 1542852 (1925-06-01), Busch
patent: 1547200 (1925-07-01), Busch
patent: 2610674 (1952-09-01), Laliberte
patent: 3130774 (1964-04-01), Kruck
patent: 3371659 (1968-03-01), Paspalas
Hayes Christopher
Lazarus Ira S.
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