US72194A - Administratrix of the - Google Patents

Description

iluitrntatrs ateat @ffice EMILY S. GRIFFET., OFST. LOUIS, MISSOURI, ADMINISTRAIRIX OF THE ESTATE OF JOSEPH A. G REFFE'I, DEGEASED.

Letters .Patent No. 72,194, fZatacZ'Det-ember 17, 1867.

IMPROVEMENT IN REEIOVENS FOR BAKER-S.

TO ALLWHOM IT MAY CONCERN;

Be it known that JOSZEPH A. GREFFET, deceased, late ci tho city and county of St. Louis, State of Missouri,

did in his lifetime invent a new and useful Improved Oven, of which the following is a full, clear, and exact description, reference being had tothe annexed drawings, making a part of this specification, in which- Figure 1, plate 1, represents 'a front view of said oven.

Figure 2 represents avlongitudinal sectional elevation of same.

Figure 1, plate 2, represents a rear elevation of said oven.

Figure 2 represents a side elevation of same.

Similar letters indicate like parte'.

This invention is designed to produce an oven more particularly adapted to the baking of crackers on a large scale.

The oven A is built in the ordinary manner, lined with tire-brick, its sides arching and forming a dome, and having two furnaces, a a, iig. 1, plate 1, beneath, with arched roofs extending nearly the whole length of theoven, but having a considerable space between them. From the back end of each extends a ue, one passing out of the rear of the oven at b, and one at b', fig. l, plate 2, and both'connccting with the iue c opening into the chimney D, built in the corner ofthe oven. Two damper-s, e a', fig. 1, plate 2, attached topthe rods ff', fig. l, plates 1 and 2, serve to regulate the draught of the lues b b. In thc centre of the oven, and between the furnaces, is an opening, g, from which a ilue, h, iig. 2, plate 1, extends to the l'car of the oven, and there connects by an elbow, k, with the ilue c, iig. 1, plate 2. By this the oven is freedfrom the ashes that are apt to accumulate, and its operations are controlled by the damper m, connected with the rod n, figs. land 2, plate l1, and fig. 2, plate 2. On either side of the oven are two openings, of which two are seen at 0.o, fig. 2, plate 2, connecting with four fines, two ofwhich -are shown atp p. These four lues connect with the due c, two of them at g, figs. 1 and2, plate 2, andthe other two with the same flue, ou the other side ofthe oven inthe rear of the chimney D. Four dempers control these ilues, two of them being shown at r r', fig. 2, plate 2, and to the dampers are attached four rods s s s s, fig. 1, and s 3', iig. 2, plate 2, and s' s",iig. 2, plate 1, by means of which they are operated.- All these rods pass through guiding straps as at e z', figs. 1 and 2, plate 2. A. sheet-iron drum, T, iig. 2, plate 1, supported upon a shaft having its bearings in the sides of the oven, is made to revolve in the oven by. means of a belt passing around the driving-pulley v, figs. l and 2, plate 2, on the outside of the oven. From each end of the drum extend radial arms1 2 3 4: 5 6 7 8 9 10711 12, to which are attached pans, 'w 'w1 'w2 wg w4 105 wr co7 'w8 'wg wl" w, swinging freely upon pivots in such a manner that when the drum revolves, they will retain their horizontal position. lhe drum and the pans extend from-:one side of the oven to the other, just space enough being left at either end to allow the same to revolve. A There is a door, fr, figs. 1 and 2, plate 1, in the face of the oven, by means of which the crackers are placed on the pans from the peel and removed therefrom. The tires having been started, when the civen is sufiiciently hot, the drum heilig made to revolve in the direction indicated by the arrow, the pans, a's they come in succession before the door are supplied with the articles to bo baked, and relieved of them as they are donc. When it is desired to cool the oven for the purpose, for instance, of baking crackers requiring a less degree of heat', the dampers r i" shown in the drawing, and the corresponding ones on the opposite side of the oven, not shown, are opened, and the draught of the chimney soon carries oif the surplus heat. When the oven is sufficiently cooled, the dempers are closed and the pns filled as before.

'.lhe pecuiiarity of this invention consists in attaching the pans to a drum instead of a frame, as has been the method heretofore followed. The advantage of this is in the more equal distribution of the heat throughout the oven, by the radiation from the drum, and in keeping a heated surface continually in contact with the pans. Anothergrcat advantage is the perfect control the operator has over the temperature of the oven, by means of the fines p p p 19', by which the heat can be almost instantaneously reduced to the desired intensity-a very desirable thing in baking different kinds of crackers, requiring, as they do, various degrees of heat. 'lhe fines p p alone are shown in the drawing', but pp are on the opposite side of the oven in the same relative positien, and of exactly the same construction as p'p.

It is not claimed that the deceased w oven, nor of the use of the ash-Hue; but

What is claimed as the invention of the de 1; The combination of a drum wit-h the r stentially as shown and specified.

2. The arrangement ef the regulating-{1m32} pjWp" Qperating-rods, when censtrueted and arranged substantially as the first inventor of the arrangement of' the revolving pans in an ceased, and for which Letters Patent are desired, isevoiving pens of an oven, when constructed and arrange subof :tu oven, with their respective damper-s and as shown mnd specified.l

EMILY S. GREFFET,

Admz'm'sfrarz'z. 'Witnessesz l Y SAML. S. BOYD; HENRY T. CARTER.

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