US2041310A - Range - Google Patents

Description

May 19, 1936 A. w. WALKER ET AL 2,041,310

RANGE Filed May 10, 1933. s Sheets-Sheet 2 Eye 1 I w ENTORi: 18 g 0'. W4

1 ATTORNE! y 1936- A. w. WALKER ET AL 2,041,310

RANGE Filed May 10. 1933 s Sheets-Sheet s ff) [M NVw'OESZ 'A I ATTQRNEY/ Patented May 19, 19,36

UNITED STATES RANGE Arthur W. Walker, Malden, and Robert W. Rogers, Framingham, Mass, assignors to Walker,& Pratt Manufacturing'Co., Boston, Mass, a corporation of Massachusetts Application May 10, 1933, Serial No. 670,232 11 Claims. (01.126-36) This invention relates to domestic ranges, and is more especially concerned with ranges of the so-called dual or duplex type. Such'ranges are designed primarily to use coal, wood or oil as fuel, but they are also equipped with one or more gas burners for heating the oven so that the housewife may have the convenience afforded by the latter type of fuel. 1

The present invention aims more especially to improve the gas burner arrangement for heatin the ovens of ranges of this type with a view to facilitating the use of such burners and adapting a single burner for either baking or broiling.

The nature of the invention will be readily understood from the following description when read in connection with the accompanying drawings, and the novel features will be particularly pointed out in the appended claims.

In the drawings,

Figure 1 is a perspective view of the back of a range constructed in accordance with this invention;

Fig. 2 is a vertical, sectional view through the oven and adjacent parts of the range shown in Fig. 1;

Fig. 3 is a perspective view of the oven burner.

and the shelf associated therewith;

Fig. 4 is a front perspectiveview looking into the oven; and

Fig. 5 is a vertical, sectional view of the flue damper and the parts immediately associated therewith.

The construction shown in the drawings comprises a range which, in general, may be of a common form and which is provided with an oven 2. As above indicated this range may be constructed to use coal, wood or oil as the principal source of heat. Mounted in the oven is a gas burner 3, best shown in Figs. 2, 3 and 4, and which, as here illustrated is supported on the lower side of a shelf. 4 that is removably supported in the oven. For this purpose the shelf \is equipped at its opposite edges with two forward lugs 5-5 and two rear lugs 6-6 which are arranged to be guided on upper and lower runners cast in the opposite side walls of the oven, the lower runners being shown at 1-! in Fig. 4 and the upper runners being similar to them. This arrangement provides for the location of the gas burner in either a lower position, as required for baking, or in an upper position for broiling.

When the burner is shifted from one of these positions to the other, it is necessary to operatively connect the burner with a source of gas supply.

For this purpose gas conducting pipes 8 andill, 1

Figs. 1 and 2, are led into small box-like enclosures l2 and M, respectively, at the back of the stove, where they are connected. to stationary nipples l5 and I6, respectively, which project for short distances into the back of the oven. The burner 3 .is equipped with the usual mixer head or fitting l1, best shown in Fig. 3, having an adjustable shutter or plate I 8 for regulating the amount of air admitted to the burner, a hole l9, Fig. 3,

being provided at the center of the rearward' end of this fitting to receive either nipple l5 or Hi. This construction is similar to that used on gas ranges. Immediately surrounding the upper nipple I5 is a tapered tubular guide 20, and a similar guide 2| is associated in the same manner with the lower nipple 16. Consequently, when the shelf 4 is placed in the upper position, as

shown in Fig. 2, the fitting I1 is so guided by the part 20 as the shelf is pushed inwardly, that the fitting ll automatically is directed into alinement with the nipple l5 and the nipple is entered in the hole I9. This operatively connects theburner '3 with the connections that supply gas to it when it is in its upper or broiling position, and it is similarly connected with the corresponding gas supplying elements and in the same manner when it is moved into its lower or baking position. Ob-

viously the movement of the burner out of either when the burner is forced inwardly into the r proper position. the lower tapered corners of the lugs 5-5 drop into these cut-away portions 22,

as indicated in Fig. 2, and the burner cannot then be withdrawn without lifting it far enough to clear these lugs 5 from the outer portions 1 of the runners. In addition, it is preferable to so position the guide 2t with reference to the runners or rails 1-1, that while the forward lugs 5 will ride on these rails as the burner is being forced inwardly, they will be lifted off the rail by the engagement of the fitting 11 with the tapered surface of the guide 2|, just before the burner arrives in its final or operative position and the lugs 5-5 drop into the notches 22-22. Consequently, when the burner has been forced in-'- ward to the limit of its. movement, it is supported on three points only, namely, the two lugs 5-5 and'the fitting l1. When it is in its upper position it is supported and locked in the same manner.

range are equipped with dampers or covers indicated at 24' and 25, respectively, each serving normally to close the top of its respective box or enclosure. The lower cover 25 is provided with a downwardly extending arm or lug 26 which is arranged tobe engaged by another lug or finger 21, Fig. 3, projecting from the rearward edge of the shelf 4. The arrangement is such that when the burner is forced into its operative lower position the lug 21 will strike the arm 26 and raise the damper 25 into its open position, thus admitting air to the lower part of the oven.

Provision is made for carrying oil? the products of combustion by providing communication between the oven and the flue or chimney 28, Fig.2. These connections include a channel 30 in the body of the range just above the oven and connected with the oven by a long narrow slot 3|, this channel extending downwardly into another box-like structure 32, Figs. 1 and 2, to which a small stove pipe 33' is connected and leads the air, gases and fumes into the flue 28. The flow of such air and spent gases through these con,- nections is controlled by a valve or damper 34 which, for convenience;- may be referred to as the flue damper. Normally this damper is held in its closed position by gravity, and it is hinged at its upper edge, the shaft or rod on which it swings being extended through the side of the box 32 and having an arm 35 secured rigidly to. it. A link 36 is pivoted to the end of the arm 35 and 1 connects this arm with the lower air inlet damper 25. Consequently, when the latter damper is opened by the act of placing the burner in its baking position, this opening movement is transmitted through the link 36 to the flue, damper 34 and opens the latter damper also.

A similar arrangement is provided for opening the flue damper when the burner is placedin its upper or broiling position. At'this time the lug 21 engages an arm 31 projecting downwardly,

from the upper damper 24 and opens this damper in the same manner that the damper 25 is opened. Such an opening movement causes the damper to engage another arm 38 projecting laterally from the link 36 which lifts this link and causes it to open the flue damper 34, I

The air inlet dampers thus are operated selectively by the act of placing the burner 3 in either of its operative positions and the flue damper is so connected with them that it is opened simultaneously with the opening movement of either of the dampers 24 or 25. Whenever the burner is withdrawn from either of its operative positions, all three dampers automatically close bythis result will be accomplished without dropping the inner ends of the rails, but the latter expedien't provides for those minor inaccura es that must be expected in cast iron constructions, and gives added assurance that the burner when in its operative position will be supported at three. points, as previously described.

The shelf 4, in addition to acting as a support for the burner 3, also performs the functions of a baflle in directing the hot air and gases along the walls of the oven. This bafliing effect may be further increased by providing the shelf with upright flanges 40-40 at opposite edges thereof,

and these flanges can be ribbed, as shown at 4| in Figs. 3 and 4, the ribs serving to support additional supplemental shelves ,or racks above the burner shelf or bafiie 4. Preferably, also, this burner shelf or baiile and its supporting parts just described, are so made that they will support the regular racks used in ovens 'of this type. Such I a rack is indicated at 44 in Fig. 4, and may be supported on the usual lugs or runner members 45 like those commonly used heretofore in ovens. But the dimensions of the oven and the parts above described may convenientlybe made such that the rack 44 not only will flt the oven runners in the manner illustrated in Fig. 4, but when turned at right angles to the position there shown, it will then flt on any pair of the ribs 4| of the burner shelf or baflle 4., The burner shelf preferably is provided with handles 42, Fig 3, for convenience in moving the burner from one position to another or removing it altogether from the oven. v

The invention thus provides an especially convenient arrangement for utilizing a gas burner either to heat the oven for baking or for broiling. Since the dampers are operated simply by the ,movement of the burner into either of its opera tive positions, they require no attention whatever on the part of the maid or housewife. There is, therefore, no danger of the burner being lighted with an insufiicient supply of air to support combustion. While this invention is particularly useful in ranges of the dual type, it can also be used to advantage in some gas ranges.-

While we have herein shown and described a preferred embodiment of our invention, it will be evident that the invention may be embodied in other forms without departing from the spirit or scope thereof. Forexample, the connection between the channel 30 and the flue can be made directly between the box 32 and the smoke drum ofthe range, although we consider the arrangement shown to be safer and therefore better.

Having thus described our invention, what we desire to claim as new is:

1. In a range equipped with an oven, the combination with a gas burner adjustable into upper and lower positionsin said oven, gas supplying connections with which said burner is arranged to-connect automatically when placed in either of said positions and with which it automatically disconnects when removed from either of said positions, a damper operable to admit air to said oven, means for opening said damper when the burner is in either of said positions, said means being operable by the movement of said burner in either of said' positions, connections providing communication'between said oven and the flue, a second damper controlling the flow of air and spent gases through the latter connections to the flue, and connections between said dampers for causing the operation of the first damper by said burner to operate the second damper.

2. In a range, the combination of a. shelf adapted to beremovably positioned in an even, a

disconnects when removed from either of said burner mounted on and supported by said shelf,

and spaced means carried by said shelf for removably supporting a supplemental shelf, rack, or the like, above the first mentioned shelf in different positions.

3. A combined burner and shelf unit for ranges comprising, in combination, a shelf, a gas burner unit secured to the bottom of said shelf and supported thereby, lugs projecting laterally from said shelf to rest on the horizontal runners in the walls of an oven, upright flanges rising from the opposite lateral margins of said shelf, horizontal runners in said flanges to receive a supplemental shelf, said burner unit including a mixer head projecting at the rearward end of said shelf, and a damper actuating lug extending rearwardly from said shelf.

4. In a range provided with an oven having horizontal runners in the walls thereof to support a shelf in different elevations, the combination of a shelf having lugs projecting laterally therefrom A to rest on said runners, a gas burner secured to the bottom of said shelf and supported thereby, gas supplying connections with which said burner is arranged to connect automatically when said shelf is placed in either upper or lower positions in the oven, and with which it automatically disconnects when removed from either of said positions, and a damper operable to admit air to said oven when it is in one of said positions, said damper having an actuating element arranged to be operated by the movement of said shelf into either of said positions.

In a range provided with an oven having horizontal runners in the walls thereof to support a shelf in different elevations, the combination of a shelf having lugs projecting laterally therefrom to rest on said runners. a gas burner secured to the bottom of said shelf and supported thereby, gas supplying connections with which said burner isarranged to connect automatically when said shelf is placed in either upper or lower positions in the oven and with which it automatically disconnects when removed from either of said positions, a damper operable to admit air to said oven when it is in one of said positions, said damper having an actuating element arranged to be operated by the movement of said shelf into either of said positions, connections providing communication between said oven and the flue, a second damper controlling the flow of air and spent gases through the latter connections to the flue, and connections between said dampers for causing the operation of the first damper to operate the second damper.

6. In a range equipped" with an oven, the combination of a gas burner adjustable into upper and lower positions in said oven, a damper for each of said positions of the burner, means cooperating with said burner for opening one of said dampers when the burner is in its lower position and for opening both of the dampers when the burner is positions, two dampers operable to admit air to said oven, and means associated with the burner for opening one of said dampers when the burner is in its lower position and for opening both of the dampers when the burner isin its upper position.

8. In a range according to preceding claim 7, connections providing communication between said ovenand the flue, a third damper controlling the flow of air and spent gases through the latter connections to the flue, and mechanical connections between the latter damper and the first two dampers for transmitting the opening movement of either of the first two dampers to the third damper to open it.

9. In a range provided with an oven having 'horizontal runners in the walls thereof to support a shelf in diflerent elevations, the combination of a shelf having lugs projecting laterally therefrom to rest on said runners, a gas burner secured to the bottom of said shelf and supported thereby, gas supplying connections with which said burner is arranged to connect automatically when said shelf is placed in either upper or lower positions in the oven, and with which it automatically disconnects when removed from either of said positions, two dampers operable to admit air to said oven, and means associated with the shelf for opening one of said dampers when the shelf is in one position, and for opening both of the dampers when it is in its other position.

10. In a range provided with an oven having horizontal runners in the walls thereof to support a shelf in different elevations, the combination of a shelf having lugs projecting laterally therefrom to rest on said'runners, a gas burner secured to the bottom of said shelf and supported thereby, gas supplying connections with which said burner is arranged to connect automatically when. said shelf is placed in either upper or lower positions in the oven and with which it automatically disconnects when removed from either of said positions, two dampers operable to admit air to said oven, and means associated with the shelf for opening one of said dampers when the self is in one position, and for openingboth of the dampers when it is in its other position, connections providing communication between said oven and the flue, a third damper controlling the flow of air and spent gases through the latter connections to the flue, and connections between said dampers for causing the operation of the first two dampers to operate thethird damper. I

11. In a range equipped with an oven, the combination with a gas burner adjustable into upper and lower positions in said oven, connections providing communication between said oven and the flue, aflue damper controlling the flow of air and spent gases through said connections, means arranged to be operated by the movement of said burner into either of its said operative positions in said oven for opening said flue damper, and an additional damper operable to admit air to said oven, and means arranged to operate said additional damper by the act of placing said burner in one of its said operative positions.

1 ARTHUR W. WALKER.

ROBERT W. ROGERS.

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