US1347456A

US1347456A - Compression-box for oil-presses

Info

Publication number: US1347456A
Application number: US342113A
Authority: US
Inventors: Michael B Green
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-12-03
Filing date: 1919-12-03
Publication date: 1920-07-20
Anticipated expiration: 1937-07-20

Description

IVL. B. GREEN. COMPRESSION BOX FOR OIL PRESSES.

APPLICATION FILED DEC. 3,1919

Patented July 20, 1920. l 2 SHEETS-SHEET I. v .1

INYENTOR,

WITNESSES M. B. GREEN. COMPRESSION. BOX FOR OIL PRFfSSES.

APPLICATION FILED DEC. 3, I9l9.

Patented July 20, 1920.

2 SHEETS-SHEET 2.

m INVENTOR,

wlTNEssl-js MICHAEL B. GREEN, OF MEMPHIS, TENNESSEE.

COMPRESSION-BOX FOR OIL-PRESSES.

Specification of Letters Patent. Patented J l 20 1920 Application filed December 3, 1919. Serial No. 342,118.

To all whom it may concern:

Be it known that I,"MIGHAEL B. GREEN, a citizen of the United States, residing at Memphis, in the county of Shelby and State of Tennessee, have invented certain new and useful Compression-Boxes for Oil-Presses, of which the following is a specification.

This invention has reference to compression boxes for oil presses and its object is to provide a structure for the purpose, in which the top of the box is in the form of cast bars, having the advantage of much cheaper production than has heretofore been the case with structures of corresponding output because the necessity of machining is thereby greatly reduced.

In accordance with the invention, the structure is composed of a top section made up of a series of bars arranged transversely to the length of the compression box and joined in side-to-side contact, the bars having slits or slots in the upper surface merging into channels in the lower surface in such manner as to give exceptionally free drainage, and yet quite effectively holding back the meal, to which condition the material is reduced before the extraction of the oil, and which meal sometimes leaks through the press cloth carrying it. Underriding the top portion made up of the bars so joined that said top portion is an effectively one-piece structure, is a one-piece bottom section with channels formed in the upper surface, and the two sections are united by screws or other fastening means so that the combined structure is readily handled as a unit.

The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawings forming part of this specification, with the understanding, however, that the invention is not confined v to any strict conformity with the showing in the drawings, but may be changed and modified so long as such changes and modifications mark no material departure from the salient features of the invention as expressed .in the appended claims.

In the drawings,

Figurel is a plan view of a compression box, with some parts broken away and omitted to display more distant parts.

Fig. 2 is an end view of the compression box.

1 Fig. 3 is a bottom plan view of one of the Jars.

Fig. 4; is a side elevation of one of the bars, showing, in cross section, the junction strips by means of which the assembled bars are joined into a plate.

Fig. 5 is an elevation of one side of the compression box with parts in section and broken away to display more distant parts,

Fig. 6 is a section on the line 6-6 of Fig. 2.

In the drawings, there is shown a series of bars 1, each of which isas long as the width of the compression box and is of generally rectangular cross section and may be somewhat wider than thick, although such last-named arrangement need not be strictly followed. Each bar 1 has a top portion 2 with a generally flat surface or table extending the full length and width of the bar.

The under portion of the bar is in the form of a longitudinal web 3 traversed at intervals by cross webs 4, thus dividing the bar into numerous sections in the direction of the length of the bar on opposite sides of the central web 3. Both the central and cross webs have the same depth and coincide with the thickness of the bar as a whole. The web 3 between the cross webs 4 has channel recesses at 5 each constituting an arch rising in the web 3 with the crown of the arch below the bottom face of the top portion 2 of the bar. The under face of the top portion 2 between the cross webs 4:. as well as the opposite faces of the central web 3, are formed with grooves or flutes (3 parallel with each other and with the webs 4, the grooves or flutes trending in a rising direction along the faces of the central web 3 and outwardly along the under surface of the top 2 to the outer edges thereof. The flutes between any two adjacent webs 4 are disposed about equi-distantly from each other and nearer to one web 4: than the next web 4 adjacent to it. Each group of flutes 6 alternates with the like group of flutes on the opposite side of the central web. Each flute 6 communicates through a slot or slit '7 with the top'surface of the bar, the disposition of such slots corresponding with the arrangement of the flutes so that on the surface of the bar there appear groups of slots or slits with the groups similarly spaced on the same side of the center line of the barbut with the slits on one side of the center line alternating withthose on the The slits ex-.

other side of the center line. tend from each outer side edge of the bar inwardly to a point about coincident with the corresponding face of thecentral web 3.

The ends of each bar 1 are relatively solid, as indicated at S, and the ends 8 are free from cut-away or channeled parts that occur between the webs l and also between the latter and the ends 8.

In assemblingthe bars 1 into a press-plate, the ends of the bars are placed upon strips 9 of a length corresponding to the length of the completed plate, the bars 1 being in side contact and there held by the strips 9, to which the bars are joined by rivets 9 or in any other secure manner whereby the top section of the compression box is made in effect a one piece structure.

In addition to the bars 9, other bars 10 are countersunk into the sides of the assembled bars 1, extending throughout or approximately throughout, the length of the completed top section. The strips 10 slightly taper in cross section, and such taper may be asmuch as indicated in the drawings, Figs. 2 and 4, or may be considerably less in taper, or even may have no taper, but preferably the grooves receiving the. strips are slightly dove-tailed, and the strips are properly shaped to fit the grooves and are secured to the ends of the bars 1 by screws 11 or in any other appropriate manner, the strips 10 serving to increase the rigidity of the top section as a whole.

The end bars 1 of the series of bars 1 constituting the top section have slits 7 on one side only, the other side of the bar be ing. plain and solid except that the channels 5 are carried through the solid portion so as to open at the ends of the plate as a whole. The corresponding channels or arch openings 5 are all arranged in line throughout the length of the plate.

There is also provided a bottom section. in the. form of a plate 12 which may be coextensive with the top section and the top and bottom sections are joined at the corners by screws 13, so that they may be handled as a single structure. On opposite s'ides of the bottom section are channels or rabbets 14 of a size and shape to seat 1 inchwide and one-half inch long, these dimensions having been found topermit the freeflow of Oll under the pressure used,

about 4500 lbs. per square inch, and at the same time prevent the forcing of the press cloth throu h the slits to the destruction of the cloth. Moreover, slits of about the dimensions stated also hold back the escape of meal to a minimum quantity.

The slits are spaced apart in each bar by a distancewhich.experience has taught permits the production of numerous slits or slots without sufficiently weakening the bar, 1

' lower ends of those slits 7 adjacent to the sides of the grooves 15, the latter have side cut-outs 15 shown in Fig. 1.

The bars 1 may be each cast in one piece and so used with a minimum amount of machine work. The slits 7, on account of their fineness, must be cut by saws or other tools. This greatly reduces the amount of labor in completing the bars, and therefore correspondingly reduces the price at" which the finished article may be placed upon the market. 1

The invention provides an oil-press compression box of superior quality, this being due to the use of slits in place of perforations, and the arrangementof such slits, ano to the rigid construction of the bars whereby extraordinarily heavy pressure is permiss sible without injury to the bars by bending or otherwise injuriously'affectingthem, and whereby injury to the press cloth is avoided and escape of the meal from which the oil is extracted is reduced to a negligible amount.

What is claimed is 1. An element of a compression box for oilpresses, comprising an elongated bar of substantially'rectangular cross section having a with the lower edges of all thewebs in substantially one plane, the side walls of the longitudinal web between the cross webs being formedwith series of spaced grooves rising along the sides of the central web and merging into the under surface of the top portion up to the outer edges of said top portion, the lower portion ofthe central web having transverse openings there- 'through constituting passages, and the grooves in the under surface of the upper portion of the bar having slits extending to the top surface of the bar and from the outer edge of the bar toward the central portion thereof.

2. An element of a compression box for 7 ing a relatively flat top, a longitudinal centrally-disposed web on its lower surface,

spaced cross webs intersecting the longitudinal web with the lower edges of all the webs in one plane, the side walls of the longitudinal web between the cross webs being formed with series of spaced grooves rising along the sides of the central web and merging into the under surface of the top portion up to the outer edges of said top portion, the lower portion of the central web having transverse openings therethrough constituting passages and thegrooves in the under surface of the upper portion of the bar having slits extending through the top surface of the bar and from the outer edge of the bar toward the central portion thereof, saidslits being arranged in groups on opposite sides of the bar with the slits on one side of the bar alternating with those on the other side thereof.

3. An element of a compression box for oil presses, comprising an elongated bar of substantially rectangular cross section having a relatively flat top, a longitudinal centrally-disposed web on its lower surface, spaced cross webs intersecting the longitudinal web with the lower edges of all the webs in one plane, the side Walls of the longitudinal web between the cross webs being formed with series of spaced grooves rising along the sides of the central web and merging into the under surface of the top portion to the outer edges of said top portion and the lower portion of the central web having transverse openings therethrough constituting passages, and the grooves in the under surface of the upper portion of the bar having slits extending through the top surface of the bar and from the outer edge of the bar toward the central portion thereof, said slits being arranged in groups on opposite sides of the bar with the slits on one side of' the bar alternating with those on the other side thereof, and all the groups of slits on the same side of the'bar being closer to one cross web than to the neighboring cross web between which the group of slits is located.

4. 11-11 element of a compression box for oil presses comprising an elongated bar of substantially rectangular cross section with a relatively flat top, a longitudinally disposed central web on the under surface of the bar, and spaced cross webs of the same depth as the longitudinal web, said longitudinal web having channel recesses between the neighboring cross webs rising into the central web and the opposite side edges of the upper portion of the bar having entering slits extended toward the mid-portion of the bar to substantially the planes of the side surfaces of the longitudinal web.

5. A compression box for oil presses comprising a top portion composed of a series of connected transverse bars in side to side contact and a bottom portion having an area corresponding to that of the top portion and on which bottom portion the top portion is superposed and secured, said bottom portion having longitudinal grooves on its upper surface and the top portion having recesses matching the grooves and each other to form conduits through the combined structure, each bar having entering slits in its top portion extending from the edges of the bar toward the center line thereof and the bar having webs on its under surface reaching to the upper surface of the bottom portion and supported thereby and forming cavities in the combined structure to accumulate and conduct oil expressed from material resting on top portion and escapingthrough the slits into the cavities.

6. An element of a compression box for oil presses comprising an elongated bar of cast metal with longitudinal and cross webs on its lower face and having grooves rising in the opposite faces of the longitudinal web and merging into the grooves in the under face of and extending to the side edges of the top of the bar, said bar having slits cut through the top of it and ex tending along the grooves in said top from the outer edges of the bar to the side faces of the longitudinal web.

7. An element of a compression box for oil presses comprising an elongated bar of cast metal, with longitudinal and transverse webs on the under face, the longitudinal web having passages through it between the transverse webs, and the top of the bar having its under face formed with grooves extending from the outer edges of the bar to the longitudinal web and merging into grooves in the opposite faces of said longitudinal web, and slits cut through the top of the bar and following the grooves from the outer edges of the bar to the longitudinal web.

In testimony whereof I affix my signature.

MICHAEL B. GREEN.