US2448723A - Oven for heating asphalt tile and the like - Google Patents

Description

Sept. 7, 1948. 'v. MAYER OVEN FOR HEATING ASPHALT TILE AND THE LIKE Filed July 7, 1945 2 Sheets-Sheet 1 INVENTOR. M 8 MlCHAEL MAYER V A TTORNEYS M. MAYER -OVEN FOR HEATING ASPHALT TILE AND THE LIKE Filed July 7, 1945 Sept. 7, 1948.

2 Sheets-Sheet 2 INVENTOR.

MICHAEL MAYER ATTORNEYS Patented Sept. 7, 1948 OVEN FOR HEATING ASPHALT TILE AND THE LIKE Michael Mayer, Cleveland, Ohio Application July 7, 1945, Serial No. 603,(567

4 Claims.

As is well known, in the laying of asphalt tile it becomes necessary to soften the tile in order that they may be pressed into close fitting contact with the underlying cement or other floor on which such tile are laid, since such floor always presents slight irregularities and it is essential if good adherenceis to be obtained that the tile thus conform closely. It has been the practice in laying these tile simply to apply the ame from a blow torch thereto, either individually or in a stack, so as to soiten at least the edges of the individual tile preparatory to laying them. Not 'only is this a tedious operation which adds considerably to the cost of laying the tile, but the heating is anything but uniform and the results frequently unsatisfactcry in that the tile when laid will not be properly adhered.

One principal object of the present invention is to provide a simple and compact form of transportable oven which may be used on the job to heat tile of the type in question as required. A further object is to construct such oven so that it may be folded up into flat form when stored or being transported. Still another object is to make the oven of rugged Construction capable of withstanding the hard usage to which it is apt to be subjected while at the same time the Construction is such as to enable the oven to be quickly set up wherever required for use.

It will be understood that while particularly designed for heating tile oi the type in question, no limitation to such particular use is implied, and as a matter of fact, as will appear, the oven may be advantageously utilized in other entirely unrelated fields.

To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

The annexed drawings and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but several of various mechanical forms in which the principle of the invention may be used.

In said anneXed drawings:

Fig. 1 is a perspective view of my improved oven as set up for use;

Fig. 2 is a vertical longituclinal section thereof taken on the plane indicated by the line 2-2 Fig. 1;

Fig. za is a broken section on the same plane of a detail on mwhat arger scale;

Fig. 3 is a transverse section on a plane taken at right angles to that of Fig. 2, as indicated by the line 3-3 Fi 1:

Fig. 3a is a sectional View of another detail taken on the same plane, but on a somewhat larger scale; v

' Fig. 4 is a horizontal transverse section taken on the plane indicated by the line 4-4 of Fig. 2.

. Fig. 5 is a longitudinal sectional view corresponding to that of Fig. 2, but showing the oven in its collapsed or folded condition; and

Fig. 6 is a sectional view of a portion of the oven taken on the same plane but showing a modification in Construction.

The main element of the oven is a rectangular frame made up of side members I rigidly joined together at their respective ends by transverse members 2 and at spaced intermediate point-s by additional transverse members 3, 3, and if desred by other transverse members 4 located between said members 3. The foregoing frame members may be Conveniently made of angle bars, of channel iron, of angles assembled to form boxlike members as shown at the ends, or of any other suitable cross-sectional form. Hingedly attached to said frame at the four corners thereof, respectively, are legs 5 fashioned of materials similarly to the frame mem bers proper, such hinges being disposed so as to permit the legs to be folded inwardly into a plane parallel with that of the frame. At their upper ends such le'gs are provided with flanges 6 which, when the legs are unfolded, bear against end members 2 of the frame so as to lock the legs against outward swinging movement. Each ange 6 is preferably an integral part of one of the two pairs of legs 5, one convenient manner of so forming the legs and flange being to bend an angle bar into U-shape as shown.

When the oven is set up it will desirably be supported on a movable platform 'l on the order of a dolly or truck provided with rollers 8, as

shown in Fig-s. 2 and 3, the floor of the truck being made, if desired, of heat resistant material, such as sheet asbestos. such floor will furthermore be formed with properly located openings 9 in which the lower ends of the legs 5 are received, and may extend laterally, as shown in Fig-s. 1 and 3, to provide a Supplemental support forother equipment, and particularly the blow torch !0 which will be con- Veniently utilized as the heating means for the oven. To assist in properly locating such blow torch, an interrupted rail ll is secured to the corresponding lateral edges of the truck floor.

The top of the oven is formed by two plates 15, riveted or otherwise fixedly secured to the rame and extending from the respective end members 2 to the adjacent transverse member 3. The space between the two members 3 is covered over by a third plate !6 which, if desired, may be remova'ble, e. g. just loosely laid over the adjacent edges of plates !5.

I-lingedly attached to each side member I of the frame is a plate I? that extends across the entire length of said frame and is of a height somewhat less than that of the legs or supporting posts 5, so that when said plate is swung downwardly into contact with the legs in their open vertical position they will project therebeyond a sufiicient distance to engage the openings 9 in the floor 1. In this position of the plates they will ibe desirably locked to the respective legs by means of turn buttons !8 adjacent the lower ends of said legs, which in one position pass freely through slots !9 in the plate, and then upon being turned, hold the latter in firm engagement with the legs.

Similarly hingedly attached to the 'respective end members 2 of the frame are other plates 29, preferably two at each end of the oven. These plates are free to be 'swung outwardly and upwardly from their vertical position to a position of rest on top of the corresponding cover plate I 5. Also hingedly attached to the respective spao'ed transverse members 3 of the fr-ame are plates Zi which are of substantially less height, or' depth, than the side and end wall plates, depending, as shown in Figs. 2 and 3, approxinately only one-half the distance from the top to the floor of the oven. said plates 21 are further-more notched or recessed at their upper edges to provide openings 22 where-by communication is aiforded between the space defined therebetween and the larger spaces in the ends of the oven beyond the same. When it is desired to fold up the oven, these intermediate depending plates Zi Will be swung upwardly in opposite directions until they lie substantially in contact with the correspond ing top or cover plates 15, the end plates Zl at the same time being swung so as to lie on top of said plates !5, as clearly shown in Fig. 5.

Centrally aligned with the space defined by the plates 2! when in depending position, as shown in Fig. 2, are openings 23 in the respective side plates il, swinging covers 'z l being provided to close such open-ings except when in use, i. e. to permit the insertion of the nozzle of a blow torch lil through the opening, as illustrated in Figs. 1 and 3. If desired, and depending upon the size of the oven, either one or two such blow torches may be employed, but ordinarily one will be sufficient to supply the necessary quantity of highly heated gases to the oven and specifically to the space thus defined between the depending intermediate walls ZI.

Assuning that the cover plate |6 is in use, a limited portion of the gases thus supplied will escape through openings 22 into the upper portions of the spaces at either end of the oven, but the main Volume of the gases will be deflec'ted downwardly around the lower edges ,of the plates 2: into such spaces. If the oven is being used, as primarly designed, for heating stacks T of tile, the spaces at the respective ends thereof will be dimensioned so as to receive two such stacks in each space with their edges exposed on all sides. To assist in properly locating the stacks, the fioor 'l may be provided with markings 25, or like means, which indicate the location of the inner corners of the respective stacks. The heated gases as they pass from the inner chamber into the end spaces where these stacks of tile are thus located, will circulate over and entirely around the latter, and by proper regulati-on of the amount of heat thus supplied, said tile, and particularly the uppermost ones in each stack, may be softened to just the proper degree to facilitate the proper laying thereof. When it is desired to remove a tile it is merely necessary to lift the corresponding hinged end wall 20 in order to obtain ready access thereto, then such plate will be dropped again into its closed position. By providing, as indic'ated, space for four stacks, it is possible to have these of different color so that, where, as is usually the case, the tile are being laid to form a design, the appropriate ones may be successively withdrawn from the oven as required.

As indicating the quite dissmilar use to which my 'improved oven may he put, by leaving off the intermediate top cover plate !6 and providing a series of supplemental transverse rame members or bars 35 between members 3, as shown in Fig. G, a highly eicient grill is provided for use in the out-door .broiling of meats and like cooking Operations. In such case the end spaces in the oven may be utilized to heat or keep warm the food thus prepared, or other food in suitable containers. It will also be understood that in place of using a blow torch lil to supply highly heated gases to the inner chamber formed between `depending plates Zi, a gas burner or other suitable source of such gases may be utilized. Also an electric resstance heating element may be inserted in such inner chamber to provide the necessary heat.

In order to place in the oven the articles to be heated, and particularly heavy articles such as a stack of tile, it may be found more convenient to place such articles in proper location on the floor of the oven provided by the surface of the movable platform With the oven removed from the latter. Thereupon such oven can be put in place over the stacks of tile, its proper location in turn being insured by the insertion of the lower ends of the legs in the holes provided for this purpose in such floor. While the walls of the oven will preferably be made of sheet metal, sheets of other heat resistant material may of course be used instead.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention:

1. A heating oven comprising a rectangular frame, legs at the respective corners of said frame for supporting the same, plates attached to said frame forming top, side and end walls, and two plates depending from said frame intermediate of the ends thereof and defining a space for the reception of highl heated gases, said intermediate plates being formed with cutaway portions in their upper edges.

2. A heating oven comprising a rectangular frame, legs at the respective corners of said frame for supporting the same, plates attached to said frame forming top, side. and end Walls, two plates depending from said frame intermediate of the ends thereof and defining a space for the reception of highly heated gases, one of said wall plates being formed with an opening for introducin such gases into the upper portion of such space.

3. A heating oven comprising a rectangular frame,1egs at the respective corners of said fram for supporting the same, plates attached to said frame forming top, side and end wails, two plates depending from said frame intermediate of the ends thereof and defining a space for the reception of highly heated gases, one of said wall plates being formed with an opening for introducing such gases into the upper portion of such space, said intermediate plates being of less height than said wall plates.

4. A heating oven comprisng a rectangular frame, legs at the respective corners of said frame for supporting the same, plates attached to said frame forming top, side and end walls, and two plates depending from said frame intermediate of the ends thereof and defining a space for the reception of highly heated gases, all of said plates, except said top plates, as well as said legs being hingedly attached to said frame, said intermediate plates being formed with cutaway portions in their upper edges.

MICHAEL MAYER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 10 Number Name Date %0,445 Tomkins May 19, 1896 585,046 Penfield June 22, 1897 '747,814 Watson Dec. 22, 1903 1,052,418 Knapp Feb. 4, 1913 15 1,057,248 Little Mar. 25, 1913 1,156,773 Gordon Oct. 12, 1915 1,706,886 Kiler Mar. 26, 1929 2,140,924 Sather Dec. 20, 1938 2,152,168 Anderson Mar. 28, 1939 20 2,307,914 Bitney Jan. 12, 1943 FOREIGN PATENTS Number Country Date 339,979 France May 1904

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