US1348869A - Oil-press - Google Patents

Description

M. B. GREEN.

OIL PRESS.

APPLICATION FILED Nov. I9, 19I9.

Patented Aug. 10, 1920.

l L. 0 IIIII..

@XM/Immo UNITED STATES .PATENT OFFICE.

OIL-PRESS.

Application filed November 19, 1919.

T 0 all whom t may concern.'

Be it knownthat I, Miorinni. B. GREEN, a citizen yof the United States, yand resident of liIemphis, in the county of Shelby and lState of Tennessee, have invented certain new and useful Improvements in Oil- Presses, Yofwhich the following is a specilication, reference being had therein to the accompanying drawing.

This invention relates to oil presses and especially to the movable plates for sup'- porting the material to be pressed. This material is often cotton-seed meal or the like and it is commonly inclosed in fabric bags forming rect-angular mat-like structures which are placed upon the plates just mentioned. These members, .each bearing such a mat, are superposed ina press frame and the bags or mats are subjected to very high pressure until the meal is extremely dense and practically freed from its oil.

The bag supporting members are usually of high grade steel capable of sustaining enormous pressure without danger of breaking, and are provided with numerous passages to facilitate the escape of oil from all parts of the material, and the construction is such that clogging rarely occurs and the bags are rarely ruptured, while tendency of the bags to crawl on the supporting plate member is avoided, and all parts are readily made, assembled, replaced, or cleaned.

The members are each made up of a channeled metal base, and a preferably continuous or one-piece metal sheet secured upon the channeled base member.

In the accompanying drawings,

Figure 1 is a plan View of a portion of the bag support, the upper plate being broken away to expose the base.

Fig. 2 is a side or edge view of the same bag support, looking in the direction of the arrow 2, Fig. 1.

Fig. 3 is an analogous view, looking in the direction of the arrow 3, Fig. 1.

Fig. 4 is a section on the line 1 -4, Fig. 1.

Fig. 5 is a section on the line 5 5, Fig. 1.

In these figures, A represents a base shown as a plane metal plate having parallel longitudinal grooves or channels A', and B a face plate superposed thereon, secured thereto by screws B', and provided with integral low bosses C to engage the bag or Specification of Letters Patent.

Patented Aug. 10, 1920.

Serial No. 339,010.

mat of material, which bag is usually and most conveniently made to fit and cover the plate with its warp and woof threads substantially parallel to the longer and shorter sides of the plate. The plate is cut through .above each groove A to form a series of -so that oil may pass through those portions of the plate above the ribs and escape into the channels A or at the margins of the bag support. The plate is also provided with conical recesses G below the bosses and vertical upwardly tapered passages Gr lead from the upper face of the bosses int-o these recesses which are all directly over the channels A.

Practically it is found that slots are preferable to small circular perforations in allowing oil to escape from the meal, but I have found by careful experiment that so long as oil need not travel far to reach a slot, perforations and slots may alternate without appreciable loss of eectiveness, and further that the slots, if numerous, may be short. It has been usual to employ analogous slots to which either the warp threads or the woof threads of mats, placed upon the plate in ordinary position, are parallel while only threads of the, other set cross the slots, and this placing the entire strain of a pressure of many thousands of pounds to the square inch upon one set of threads led to frequent rupture of the fabric. By making the slots oblique with respect to the threads, both sets share the strain and ruptures are far less frequent.

It is well known that for various reasons the bags and their contents tend to crawl o n the plate rendering the thickness non-uniform. Thereby some thin portions receive less pressure and some oil fails to be eX- pressed. The use of the bosses at short slots of a set may be cut simultaneously by saws on the same shaft.

It may further be noted that the metal bag support having all. its slots oblique has advantages which could be obtained whether such support is made as shown or otherwise, that is whether the plate be provided with the screws, the bosses, or the recesses in its lower face.

What I claim' is:

'1. In a support of the class described, a bag supporting metal plate provided with numerous slots extending therethrough and all oblique to both warp and `woot threads vof the usual bags covering the plate and containing the oil bearing material.

2. The combination with a plane metal base .having ribs above separated by wide grooves, of a mat-supporting plate' covering the base, resting on said ribs, having in its lower `face recesses directly above the ribs and in open communication with the adjacent grooves, and further having perforavtions leading through the plate into said recesses and apertures leading through the plate directly into the grooves, substantially as set forth.

3. In a support for mats of material in an oil press, a base having in its upper surface primarily open oil carrying channels, and a plate superposed on said base and provided with a series of narrow slots oblique with respect to the warp and woof of the usual press mats laid upon the plate, and all leading into said channels.

4. The combination with a plane metal base having a series of heavy fiat topped ribs above separated by wide grooves, of a plane mat-supporting plate resting on the ribs and having many small perforations directly over said grooves and many others directly over said ribs, the perforations last mentioned opening into relatively large recesses in the lower side of the plate and extending across and beyond the ribs and downwardly open above the grooves.

5. The combination with a base member having its upper side'provided with parallel grooves separated by ribs, of a plate secured to the base, covering its upper surface and provided with short oblique slots extending approximately from side to side of the grooves to allow oil to pass downward into the latter.

In testimony whereof I hereunto affix my signature.

MICHAEL B. GREEN.

Images