US2719493A - Turnover former - Google Patents

Description

W. H. BROOKS TURNOVER FORMER Filed Dec. '7, 1953 INVENTOR. du L mM H. 9,@00/(5 Ewa.; Adm

United States Patent O TURNOVER FORMER William H. Brooks, San Anselmo, Calif. Application December 7, 1953, Serial No. 396,607

1 Claim. (Cl. 107-1) This invention relates to and in general has for its object the provision of an automatic machine for forming comestible turnovers.

More specifically, the object of this invention is the provision of a turnover machine of the character above described including: a mold rotatable on a fixed axis and formed with a mold depression circumscribed by a marginal flange extending outwardly beyond all other portions of said mold; a floating, freely rotatable press cylinder mounted adjacent said mold in parallelism with said fixed axis. toward said mold into fractional driving contact with said mold flange; stop means for limiting the transverse movement of said cylinder beyond the limits of said flange; and means for rotating said mold about said fixed axis.

The invention possesses other advantageous features, some of which, with the foregoing, will be set forth at length in the following description where that form of the invention which has been selected for illustration in the drawing accompaying and forming a part of the pres ent specification, is outlined in full. In said drawing, one form of the invention is shown, but it is to be understood that it is not limited to such form, since the invention as set forth in the claim may be embodied in other forms.

Referring to the drawings:

Fig. 1 is a top plan View of a turnover machine embodying the objects of my invention with a portion of its frame broken away to better illustrate its construction.

Fig. 2 is a vertical section of the machine illustrated in Fig. l, taken on the section line 2 2 of Fig. 1 but with a portion of its end cover plate shown in place.

Fig. 3 is a mid-vertical section taken on the section line 3-3 of Fig. 1.

Fig. 4 is a fragmentary vertical section taken on the section line 4-4 of Fig. 2.

The machine as illustrated in these figures comprises a supporting frame generally designated by the reference numeral 1, and including a base member 2 and opposed parallel and identical upstanding end members 3 and 4, each provided with an outwardly extending marginal flange 5.

lournalled in bearing bosses 6 formed in the opposed ends 3 and 4 and extending therebetween is a mold shaft 7 and fastened to this shaft by screws 8 is a mold 9. Formed in the mold 9 is a mold depression 11 circumscribed by a marginal flange 12. Formed on the surface of the mold depression 11 immediately adjacent the flange 12 is a C-shaped band of piecrust corrugations or crenulations 13 of conventional form. As viewed in plan in Fig. 1, the mold depression 11 takes the form `of an elliptical sector bounded at its inner side by a straight section of the marginal flange 12 in parallelism with the shaft 7. It should also be observed from Fig. 3 that the radial distance of the flange 12 as measured from the axis of the shaft 7 is greater than any other portion of the mold 9 and its associated parts.

Pivoted to each of the frame ends 3 and 4 (see Figs. 2 and 3) by pins 14 is a second class lever 15. Formed intermediate the ends of each of the levers 15 is a bearing boss 16 extending through slots 17 formed in the ends 3 and 4. Journalled in these floating coaxial bearing bosses is a shaft 18 and fixed to this shaft in parallelism with the shaft 7 is a right circular press cylinder 19.

Means for biasing said cylinder transversely i 2,719,493 Patented Oct. 4, 1955 Fixed to the outer end of each of the levers is a stud 21 and fastened to each of these studs is one end of a coil spring 22, the opposite end of each spring being anchored to its associated frame end plate by a pin 23. It will therefore be seen that the springs serve to bias the press cylinder toward the mold 9 and into contact with its marginal flange 12.

Fastened to each of the frame ends in the path of move ment of each lever 15 is a stop pin 24, the position of these pins being such that the press cylinder 19 is preeluded from engaging any portion of the mold 9 other than its marginal flange 12.

Keyed to one end of the shaft 7 is a crank 25 provided at its outer end with an operating handle 26 and fastened to each of the frame end flanges 5 by screws 27 is a cover plate 23.

In operating this device, the operator positions it as shown in Fig. l and then places a sheet of dough over the mold with a portion thereof extending over the press roll. A comestible filling is then deposited in the dough-lined mold depression and this having been done, the mold is rotated (clockwise, as shown in Fig. 3) by the handle 26. Since the flange 12 of the mold is in frictional engage ment with the press roll over substantially of its rotation, the press roll will rotate with the mold and in so doing, that portion of the dough sheet covering the press roll will be folded back over the mold and its filling. Furthermore, theA interaction of the mold flange 12 with the press roll results in pressing and bonding the overlying marginal edges of the dough sheet so as to seal the comestible filling therein. Also, the folded dough sheet will be trimmed along the marginal flange 12. When the marginal flange has cleared the press roll, the press roll is free to spin and in doing so, any dough trim adhering thereto will be thrown away from it. Since during the folding, pressing and trimming cycle of the operation, the press roll or cylinder 19 is held resiliently in contact with the mold flange 12, it exerts a uniform pressure on the dough sheet, thereby uniformly bonding the overlying edges of the dough sheet and forming a marginal edge thereof of uniform thickness.

I claim:

A turnover-forming machine comprising: a supporting frame; a turnover mold journalled in said. frame for rotation on a fixed axis, said mold being formed with a depression circumscribed by an outwardly extending marginal flange having inner and outer vertical walls which bound a contacting surface which is radially outermost of all other parts of said mold, the configuration of said contacting surface being such that when said mold is rotated about said fixed axis the said contacting surface of said flange defines a cylindrical surface of revolution parallel to said axis; a pair of spaced, opposed lever arms pivoted to said frame on a common axis parallel to said fixed axis; a press cylinder journalled to and between said lever arms for free rotation on a transversely shiftable axis in parallelism with said fixed axis; means for biasing said cylinder towards said mold and into frictional engagement with said mold flange; stop means for limiting the transverse movement of said cylinder toward said mold beyond a point where said cylinder is in contact with said mold flange; and means for rotating said mold.

References Cited in the file of this patent UNITED STATES PATENTS 51,539 Baker Dec. 19, 1865 546,488 Hessi Sept. 17, 1895 1,236,998 Tommasini Aug. 14, 1917 2,001,792 Lombi May 21, 1935 2,227,728 Lombi Jan. 7, 1941 2,588,454 Abel Mar. 11, 1952

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