US2073290A

US2073290A - Fluid pressure veneer press

Info

Publication number: US2073290A
Application number: US55271A
Authority: US
Inventors: Monroe M Teague
Original assignee: Individual
Current assignee: Individual
Priority date: 1935-12-19
Filing date: 1935-12-19
Publication date: 1937-03-09
Anticipated expiration: 1954-03-09

Description

M. M. TEAGUE WWAAM Mmm Filed DSO. 19, 1935 FLUID PRESSURE VEEER PRESS .March 9, H337.`

Patented Mar. 9, V i937 UNITED STATES PATENT OFFICE FLUID PRESSURE VENEER PRESS Monroe M. Teague, Lenoir, N. C. Application December 19, 1935, Serial 'No. 55,271 2 claims. (ci. 1414-281) 'I'his invention relates to a press for making wood veneer and a process for producing veneered articles by means of such press, the ultimate object being to so veneer wooden cor as to eliminate the loss due to defective adhesion of the veneer which results from the known methods ci producing veneered stock.

It is well known that the production of veneered stock of curved, round, or irregular curvilinear outline by known methods has been extremely difficult with many culls resulting from improper'adhesion of the veneer coat to the core due to lack' of uniform pressure throughout the entire surface of the veneer. The usual methods a employed have been the use of rubber pads and some clamping means, and the use of pressure boxes in which the stock to be veneeredl is packed L in sawdust, and then applying pressure to the sawdust. Defective veneering results because neither the rubber nor the sawdust can be evenly compressed in the irregularities of the core.

These defects are overcome in my apparatus. The apparatus consists of a suitable receptacle so constructed as to withstand great internal pressure, and in which are provided suitable racks or shelves to support collapsible containers, which containers are so constructed as to exhaust into the open air. Means are provided for' introducing into said receptacle a suitable iiuid 30 under pressure, preferably compressed air.

Heating means within the said receptacle is also provided to hasten the drying of the glue used to cause the veneer to adhere to its core. This heating means is usually, steam coils, but electrical resistance may be employed if desired.

The accompanying drawing illustrates the invention in which Figure 1 is a diagrammatical vertical central longitudinal section of my apparatus.

Figure 2 is an end view of my apparatus, the end closure being removed. This shows the layout of shelves for supporting the' compression sacks and the manner of arranging said sacks on said shelves.

Figures 3 and 4 are cross-sections of pieces of veneer stock of unusual contour illustrating the efficiency of my press in causing complete adherence of the veneer coat to the core.

In the drawing 10 is a drum constructed of steel or other suitable material. It has a closed end II, and an openable end I2 which is adapted to be closed by means of a suitable cap I3 se- Y cured in air-tight contact with the tank body by means of suitable clamping lugs I4. The tank is mounted on suitable base pieces I5.

.irregular shapes of cores.

- Within the tank are arranged suitable shelves I6 secured to the tank wall by brackets I'I. 'I'hese shelves or racks I6 may be of either solid or foraminous material, and are adapted to support veneering sacks or tubes IB formed of a suitable flexible material, such as rubber, rubberized cloth, or other freely flexible rgoods impervious to the passage therethrough of air or other compressible fluid. These veneering sacks are' o'f suitable length to accommodate stock cores of the z conventional length. It is obvious that the dimensions of the tank shelves and sacks may be of such length as to `accommodate any desired length of material without departing from the essentials of my invention.

These sacks I8 are fitted with air-tight closures I9, and ducts 20 which are in operative conm nection with-relief pipe 2| which discharges into the A valve controlled pipe 22 opens into the tank and is connected with a suitable compressor, on pressure tank, not shown,

Within the tank is a heating coil 23 connected at 24 with a suitable source of heat, not shown.

In operating my invention the requisite amount of veneer is treated with a suitable adhesive and taped to the stock core inthe usual way. This is then placed in one of the compresslble sacks I8 which is closed by'air-tight closure I9, and connected with the atmosphere by means of duct 20 and relief pipe 2I. The end or gate I3 isthen secured in position. After this uid under pressure is introduced into the tankrby means of inlet 22. The air in the sack I8 is expelled collapsing the .sack walls thereby producing an even pressure throughout the extent of the core stock.

-This results in a'thorough and uniform contact 'of the veneer with the core throughout its entire extent.

. It will be seen therefore that useof my invention will ensure complete and satisfactory contact of the veneer with concave, convex, round or Furthermore if .heat be introduced into heating element 23, the process will be rapid as well as ,eilicient 1 Having thus fully disclosed my invention, what I claim as new is:

1. A veneer press comprising a tank and closure therefor, a .huid-tight collapsible container for veneer stock adapted to be located within said tank, relief means extending from said container through a wall of the tank to the open air, and means for introducing into said tank fluid under pressure.

2. A veneer press comprising; a tank, ailuidtight closure therefor, a. conduit extending within said tank and' closed from the interior thereof but open to the atmosphere through a wall of l the tank, a. plurality of iluid-tight collapsible containers for veneer stock, means in the tank to support said containers, means to connect the interior of said containers with said conduit. and means @or introducing into said tank iuid under pressure, whereby said fluid pressure may expel the air from the interior of said containers with collapse of the containersupon enclosed veneer 5 stock.

MONROE M. TEAGUE.