US1126280A - Tray for drying-machines. - Google Patents

Description

W. H. RIHL & E. B. AYRBS.

TRAY FOR DRYING MACHINES.

APPLIGATION FILED JAN. 9, 1.913.

Patented Jan. 26, 1915.

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mais earns man WILLIAM H. RIHL AND ELWOOD IB. AYRES, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNORS TO THE PHILADELPHIA TEXTILE MACHINERY CQIVJPANY, OF PHIL- ADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

TRAY FOR IDRYING-MACI-IINES.

Application led January 9, 1913.

To all whom 'it may concern:

Be it known that we, WILLIAM H. RIHL and ELwooD B. Arens, citizens of the United States, residing in Philadelphia, county of Philadelphia, State of Pennsylvania, have invented certain Improvements in Trays for Drying-Machines, of which the following is a specification.

rlChe object of this invention is to construct a tray for properly supporting a leather board during the process of drying so that the edges of the board will not dry out before the body of the board is dry; thus pre venting warping and buckling of the board.

In the accompanying drawings Figure 1 is a perspective view of our improved tray; Fig. 2 is a detached perspective view of the frame; F ig. 3 is a plan view of the tray with the frame in position; Fig. l is a sectional view of the tray on the line 4 4, Fig. 3, showing the frame and the leather board in position; and Fig. 5 is an enlarged sectional view illustrating the leather board resting directly on the frame.

Our improved tray is so designed that it can be mounted on a truck, which is traversed through a drying machine and it is essential, especially in the drying of leather boards, to prevent the edges of the board from drying faster than the middle of the board; otherwise, the board is apt to crack and to warp at the edges during the calendering process.

Referring to the drawings, A is the tray made of channel bars a.

B are wires crossing each other, as shown, so as to form a suitable perforated supporting bottom for the leather board; the mesh being about one and a half inches in the present instance, although this may vary.

l) is a frame made of imperforate thin sheet metal and preferably secured directly Specification of Letters Patent.

Patented Jan., 26, 1915. serial No. 740,972.

to the surface of the wire screen, although 1t may be detachably mounted thereon, if desired.

Leather board is usually cut to a standard size and the operator, when placing a board on the tray, arranges it thereon so that the edges of the board overlap and rest directly upon the frame, preventing any circulation of air between the board and the frame. `When the truck, with the trays thereon, is inserted in the drier, the action of the heat is to dry the body of the board on both sides, while the edges are prevented by the frame from drying as rapidly as the body, thus preventing buckling and producing a thoroughly dried board and one which is substantially flat.

We claim:

The combination of a tray for drying leather or paper board having a series of wires extending from one side to the other and below the upper edge thereof and forming a perforate bottom for supporting the board to be dried; and a separate imperforate frame, open at the center, and arranged to be located within the tray, said frame being thin and having an uninterrupted smooth upper surface so that when the board to be dried is placed on the tray the edges of the board will rest upon the smooth upper surface of the frame, preventing the heated air which passes over and under the tray from gaining access to that portion of the board resting on the frame.

In testimony whereof, we have signed our names to this specification, in the presence of two subscribing witnesses.

WILLIAM H. RIHL. ELWOOD B. AYE-ES. Witnesses:

Jos. H. KLEIN, WM. A. BARR.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

` Washington, D. C.

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