US2734988A - beardslee - Google Patents

Description

Feb. 14, 1956 D. BEARDSLEE 2,734,988

COOKING STOVE Filed Oct. 18, 1950 4 Sheets-Sheet l /4 a 1/ L- n J L--I5 IJK l Li;

INVENTOR.

L.DALE. BEARDSLEE gum/4. QM,

Feb. 14, 1956 1.. D. BEARDSLEE COOKING STOVE Filed Oct. 18, 1950 4 Sheets-Sheet 2 JNVENTOR. L.DALE. BEARDSLEE Feb. 14, 1956 L. o. BEARDSLEE 2,734,933

COOKING STOVE Filed Oct. 18, 1950 4 Sheets-Sheet 3 Zia INVENTOR. L. Dms BEA/205L155 Feb. 14, 1956 Filed Oct. 18, 1950 L. D. BEARDSLEE COOKING STOVE 4 Sheets-Sheet 4 I2 9 l LL24, I M ii 28 I I" I l :i' '1 I 1 INVENTOR. L. DALE BEAIZDSLEE United States Patent COOKING STOVE Lewis Dale Beardslee, Greenville, son Refrigerator Company, poration of Michigan Mich., assignor to Gib- Greenville, Mich., a cor- This invention relates to cooking stoves, and particularly to such stoves having deep well cookers with adjustable burners therein.

An object of the invention is to provide a deep well cooker having a vertically movable burner therein, and regulating means on the control panel of the stove for raising and lowering the burner.

Another object is to provide a deep well cooker of the character mentioned in which the burner is positively locked in its various positions of adjustment.

A still further object is to provide a regulating system for movable deep well cooker burners that is adjustable to fit different styles of stoves as well as to compensate for irregularities in manufacture of individual stoves of the same type.

Another object is to provide such a regulating system which is capable of assembly separate from the stove, and adapted to be installed as a unit in the latter.

These objects and others ancillary thereto will more fully appear in the following specification, when read in connection with the accompanying drawings, wherein:

Figure 1 is a front elevational View of a cooking stove embodying the invention;

Figure 2 is a fragmentary the rear panel broken away;

Figure 3 is a fragmentary sectional view taken on substantially the line 33 of Figure Figure 4 is a fragmentary cross-sectional view of the burner supporting arm and guiding means taken at substantially the level of line 44 of Figure 5 and Figure 5 is a fragmentary sectional view taken through the center of the deep well cooker.

Figure 1 shows an electric cooking stove of generally conventional form having a frame including a top wall 11, a splash back 12, and a transverse supporting rail 13 across the back thereof. In the top wall 11 are the usual surface burners (not shown) as well as a deep well burner 14. The usual burner and oven controls (not shown) are mounted on the splash back.

The deep well cooker comprises an outer shell 15 of cylindrical shape, closed at the bottom by bottom wall 16 and having a peripheral flange 17 at the top which rests on the top wall 11 of the burner. The shell 15 has a vertical slot 18 in the rear thereof for a purpose which will appear presently.

The burner 14 is shown more or less diagrammatically in Figure 5. It is supported in a ring 19, which ring is mounted on a supporting arm 20. The arm 20 is composed of two opposed arcuate members 21 having rearward extensions 22, and a guiding section 23. The guiding section 23 of the supporting arm is provided with four horizontally elongated slots 24 (see Figure 5) and is clamped between the rearward extensions of arcuate members 21 by means of machine screws 25 passing through slots 24.

The arcuate members 21 are provided with bosses 21a which extend radially outwardly. The size of the bosses rear view of the stove with 2 ,734,988 Patented Feb. 14, 1956 is such that they nearly touch the side of the outer shell 15, thereby assisting in guiding the burner upwardly and downwardly.

The guiding section 23 has a vertical extension 26 thereon with four rollers 27, two at the top and two at the bottom extending laterally therefrom. The extension 26 is also provided with a lateral lug 28, the purpose of which will appear presently.

A mounting plate 29 of relatively heavy gauge metal is attached to rail 13 and to the rear edge of the top wall 11, preferably by bolts such as bolt 30. It carries the elevating mechanism for the deep well cooker burner. The mounting plate is relatively large, as shown in Figure 2, and is flanged at its vertical edges for stiffness.

The mounting plate is provided with a vertical slot 31 through which guiding section 23 extends (see Figure 4). A pair of strips 32 of .Z shaped cross section are welded to the mounting plate 29 at opposite sides of slot 31. Together with the plate 29 the strips 32 form opposed channels which receive rollers to guide the vertical movement of the burner supporting arm 20 and burner.

A bearing 52 adjacent the top of the mounting plate 29 and offset to one side of the burner receives a shaft 33 which extends through the splash back 12. A regulating knob 34 is fixedly attached to the shaft 33 for rotating the latter. Collars 35 and 36 on the shaft prevent axial movement thereof.

A crank arm 37 is fixedly attached at one end to the rear end of shaft 33. At the other end of crank arm 37 is a bolt 38 having a ball head 39. The latter is received in a socket in a sleeve 40. The sleeve is internally threaded to receive a threaded rod 41. The rod 41 is threaded into another internally threaded sleeve 42 (see Figure 2), which has a socket receiving a ball head on a bolt 43. The latter is fixedly attached to a lever 44.

The lever 44 is pivotally connected at 45 intermediate its ends to the mounting plate 29. The short end of the lever 44 is connected by a counterbalancing spring 46 to the rail 13 by means of an eye bolt and wing nut 47 by means of which the tension of spring 46 may be regulated. The other end of the lever 44 is pivotally connected by a link 48 to lug 28 on vertical extension 26 of the supporting arm 20.

A pair of stops 49 and 50 are fixedly attached to the mounting plate in the path of rotation of crank 37 to permit more than but less than 360 rotation of the crank.

A retaining finger 51 is attached to mounting plate 29. The retaining 'arm is a leaf spring member formed to provide an arcuate recess 52 therein. See Figure 2. It is located adjacent the crank arm 37 and assists in holding the latter in its upper position.

With the parts assembled as above described, the burner can be easily raised or lowered by rotating the knob 34 on the splash back. Referring particularly to Figure 2, the parts are shown in full lines with the burner elevated, and in broken lines with the burner lowered. Clockwise rotation of knob 34 (as viewed from the rear in Figure 2) will permit rod 41 to move downwardly, which in turn will permit clockwise rotation of lever 44, so that the burner will be lowered until crank 37 strikes stop 50. Reverse movement of the knob 34 will raise the burner.

The spring 46 is tensioned sstliciently so that it tends to raise the burner from its lowermost position. Thus, as will be seen from Figure 2 and the following description, the burner is positively locked in lowered position. It will be noted that when crank arm 37 rests against stop 50 it has swung slightly past dead center so that rod 41 and crank 37 form an obtuse angle. As spring 46 tends to pull lever 44 in a counterclockwise direction from its broken line position, it forces crank 37 against stop 50,

preventing upward movement of the burner until the knob is manually rotated.

When the burner is in its upper position spring 46 is not stressed sufiiciently to fully support the burner. The unsprung weight of the burner tends to lower the latter, but that is prevented because the rod 41 has again swung past dead center in the opposite direction relative to crank 37 and the latter rests against stop 49.

Thus, it will be seen that in both positions the burner cannot move unintentionally.

Also, it will be noted that in this position of crank arm 37 its free end is located in the recess 52 of retaining finger 51, which aids in positively holding the crank arm against stop 49. The finger 51 flexes sufficiently as the crank arm is rotated to permit the end of the latter to enter the recess. In addition, the flexible finger gives the operator an indication that the burner is nearing its raised position.

All of the parts of the elevating mechanism except knob 34 and the arcuate members 21 and ring 19 can be assembled on the mounting plate 29 prior to its assembly in the stove. It is only necessary then to attach the mounting plate to the stove, screw the arcuate members to the guiding section 23, and attach knob 34 to shaft 33. When attaching the arcuate members to the guiding section 23, the ring 19 is properly centered in shell 15, by sliding the screws, while still loose, in slots 24. When properly located the screws are tightened. If the burner is not correctly located vertically relative to the shell 15, the rod 41 can be rotated in sleeves 40 and 42 thereby adjusting the burner for proper raising and lowering.

These adjustments compensate for small inaccuracies in manufacture, and as is well known, tolerances in sheet metal work are relatively large, making provision for ad justment necessary. Furthermore, such adjustments permit the use of but one type of elevating mechanism in a variety of stove models.

The use of ball and socket connections between rod 41 and crank 37 and lever 44 is also an important feature. The inclination of the splash back varies with different models as well as slightly in different stoves of the same model. By their use the mechanism will always operate freely and positively.

From the foregoing it will be seen that the present invention provides a simple, positive elevating mechanism for a deep well cooker burner, that is easily assembled and adaptable to a variety of stove styles.

The scope of the invention is indicated in the appended claims.

I claim:

1. In a cooking stove, a stove frame and a vertically movable burner, a laterally extending supporting arm connected to said burner, guide means on said supporting arm and frame for guiding the vertical movement of the burner, a crank rotatably mounted on said stove frame, a pair of stops on said frame limiting the rotary movement of said crank to more than 180 and less than 360, a link pivotally connected at one end to said crank, and means connecting the other end of said link to said supporting arm, said link being pivotally connected to said means whereby when said crank touches either of said stops said link and crank are out of alignment in a direction toward the respective stop.

2. In a cooking stove, a stove frame and a vertically movable burner, a laterally extending supporting arm connected to said burner, cooperating guide means on said arm and frame for guiding the vertical movement of the burner and holding said burner in a horizontal position during said movement, a lever pivotally mounted on said frame in a plane substantially perpendicular to said laterally extending supporting arm and connected thereto, means for transmitting a vertical force to said lever to raise or lower said burner, and a member adjustable in a direction lengthwise thereof extending between and pivotally connected to said means and said lever for positioning said burner in its uppermost position relative to the top of the cooking stove.

3. In a cooking stove, a stove frame, a deep well cooker shell therein having a vertical slot in a side thereof, a vertically movable burner in said shell, a supporting arm extending laterally through said slot, said supporting arm being formed of relatively horizontal adjustable sections, and cooperating guiding means on said supporting arm and stove frame for guiding the vertical movement of the burner, said guiding means on the frame comprising a pair of opposed channels, and the guiding means on the supporting arm comprising a vertical extension at the end of the arm remote from the burner and rollers on said extension received in said channels.

4. In a cooking stove, a stove frame, a deep well cooker shell therein having a vertical slot in an upright side thereof, a burner and burner support vertically movable in said shell, said burner support having a portion thereof projecting through said slot, a mounting plate detachably connected to said stove frame, and mechanism for raising and lowering said burner carried wholly by said mounting plate and connected to said projecting portion of said burner support, said mechanism comprising a crank rotatably mounted on said mounting plate, a lever pivotally mounted on said mounting plate, a link connecting said crank to said lever, cooperating fixed and movable guide means on said mounting plate, means connecting said movable guide means to said projecting portion of said burner support, and a link connecting said lever to said movable guide means.

5. In a cooking stove, a stove frame, a deep well cooker shell therein having a vertical slot in the upright side thereof, a burner and burner support vertically movable in said shell, said burner support having a portion thereof projecting through said slot, and mechanism for raising and lowering said burner mounted on said stove frame and connected to said projecting portion of said burner support, said mechanism comprising a crank rotatably mounted on said frame, a lever pivotaily mounted on said frame, a link connecting said crank to said lever, cooperating guide means on said frame and burner sup port for guiding said burner in a vertical path, and spring means connected to said frame and lever for counterbalancing said burner.

References Cited in the tile of this patent UNITED STATES PATENTS 1,102,392 Denhard July 7, 1914 1,839,112 Reich Dec. 29, 1931 2,025,252 Stencell Dec. 24, 1935 2,196,968 Bemis Apr. 16, 1940 2,257,580 Trompeter Sept. 30, 1941 2,313,968 Reich Mar. 16, 1943 2,527,566 Miller Oct. 31, 1950 2,548,158 Henyan Apr. 10, 1951 2,551,441 Kuenne May 1, 1951 2,601,546 Miller June 24, 1952 2,658,985 Maxwell Nov. 10, 1953 FOREIGN PATENTS 7,758 Norway Nov. 20, 1899

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