US1387700A

US1387700A - Expressing-press

Info

Publication number: US1387700A
Application number: US289689A
Authority: US
Inventors: Alfred W French
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-04-12
Filing date: 1919-04-12
Publication date: 1921-08-16
Anticipated expiration: 1938-08-16

Description

A. W. FRENCH.

EXPRESSING PRESS.

APPLICATION FILED APR. n. 1919.

Patented Aug. 16, 1921.

2 SHEETS-SHEET l.

A. W. FRENCH.

EXPRESSING PRESS.

APPLICATlON FILED APR-12. 1919.

1,387,700. Patented Aug- 16,1921.

2 SHEETS-SHEET 2- A ri'oR/vir.

UNITED STATES PATENT OFFICE.

ALFRED w. FRENCH, or PIQUA, omo.

EXPRESSIN'G-PRESS.

Lssvjvoo. I

Specification of Letters Patent.

Patented Aug. 16, 1921.

Application filed April 12, 1919. Serial no. 289,689.

" superimposed charges of meal or material separated by pressplates and cloths are subjected to pressure between opposing rams or pressure devices in an open-ended press cage which has orifices in its side walls forthe escape of the expressed oil. In some presses of this type the upper ram, head block or pressure device is caused to enter the upper end of the cage during the pressing operation, whether by reason of the ascent of the cage relative to the pressure device or by the descent of the latter into the cage, thus depressing the material in the cage and forming a space in the upper end of the cage which is not occupied by the material. It has been found in practice that more or less oil collects in this space and overflows the top of the cage, or when the pressure is relieved or the pressure device is withdrawn preparatory to discharging the pressed cakes from the cage, this oil soaks back into the material in the upper portion of the cage. This is objectionable, both because the cake is left soft and unfit for use and because there is a loss of oil unless the soft cake is again pressed to recover this oil.

The object of this invention is to provide efficient means of simple and practical construction for removing or carrying off this oil from the upper end of the press cage and preventing it from flowing over the top of the cage or soaking back into the meal or material when the pressure is relieved.

The invention is applicable to cage presses of various types of construction or intended for difierent purposes, such for instance as filling presses which are used for filling the press cages with the charges of material, and finishing or expressing presses in which the material is subjected to pressure for extracting the oil. Such filling and finishing presses are sometimes used in combination, the filled cages from the filling press being transferred to the finishing presses for the final pressure on the material. The invention is herein shown in connection with both kinds of presses.

In the accompanying drawings:

Figure l is a side elevation partly in sec.- tion, showing theupper portions of a filling press and two finishing; presses provided with oil removing means embodying the invention.

F 2 isa bottom face View of one of the halves of the upper head block or pressure device.

Fig. 3 is a sectional elevation of the head block or upper pressure device of one of the finishing presses.

Fig. 4 is a similar view of a modified form ofpressure block for a finishing press.

Fig. 5 is a fragmentary section, on an enlarged scale, of the head block shown in Fig. 4Q v e Fig. 6 is a bottom plan view of the head block shown in Fig. 3.

Fig. 7 is an enlarged sectional elevation of the upper portion of a filling, press showing the two parts of the head block or upper pressure device separated for the introduction of the charges into the press cage.

Fig. 8 is a section on line 8-8, Fig. 7, of one of the head block sections.

. 10, 11 and 12, Fig.- 1, represent respectively a filling press and two finishing or expressing presses, and 13 represents the open-ended press cages in the filling and finishing presses l0 and 11 respectively. These presses may boot my usual or suitable construction, the filling press 10, shown in Fig. 1, being for the purpose of filling the cages, each of which, after being filled with the charges ofmaterial in the filling press, isremoved to one of the finishing presses for subjecting the material to the final pressure. The cages, as usual, are open at their upper and lower ends and have upright; side walls with suitable orifices or openings for the escape of the oil from the material. I

In the filling press shown in the drawings, the head block or upper pressure device consists of two halves .or

sections

14 and 15 which are movable horizontally toward and from eachother. lVhen these sections are 105 in contact with'each other, as shown in Fig.

'1, they register withand are adapted to enter the upper end of the press cage. By separating the head block sections as shown in Figr7, an open space is provided between 110 them above the press cage into" which a charging or filling device (not shown) is' adapted to enter for depositing the.succes sive charges of material into the press cage. The construction of the filling pressior ms no part of this invention and only enough of the upper portion of this press is illus-v trated in the drawings to 'give an under standing of its use. The two sections 14: and 15 of the head block are supported by wheels 16 adapted to travel on horizontal tracks 17 V and the sections are moved in and out by l to enterthe same vIn both the filling and finishing presses rect'ly to the pinion l8 engaging toothed racks securedto the head block sections; 20 indicates yaplunger or ram at the upper. end of the press adapted, -when the head blocksectlons are separate chto be moved down into the. press ca e 'for shoving or packing the charges 7 therein. a a

In each of the finishing presses shown, the head blockor upper pressure device consists oft-a block 21 stationarily secured on the press head in line with the press cage so as forv pressing the material.

shown the head block or upperpres'sure device is caused to entermore or less the upper end o-fthe press cage by the upwardimovement of the press cage caused by the ascent of the lower ram of the press=during the usual-operation of the press. This presses the material down in the cage andforms a space in the upper end of the cage, unoccupied by the material, in which oil expressed from the material can collect.

For removingsuch oil the head block or upper pressure "device for each press is prefer ably provided in itslower portion with an oil escape duct or passage which connects in any suitable way with thesspace in-the upper end ofthe press cage and is connected with a'jpump or devicegfor drawingofithei oil from this space. the filling press shown, a pipe 22 in one 23in the bottom-face of said head block section, andconnects at its'upp'er end by a flexible pipe 23 with a main suctionnrpipe 24 Z leading to a suitable pump or suction. device 25. The flexiblepipe 23 permits theabov'e described movement of the head block. Any

other suitable kind of connection permitting the movement of the'hea'd blockcould be em- The head block or pressure device: 21 of the finishing press,-as shown inilFig, 1,

V is similarly provided in itsbottom face-with ployed.

cross grooves 26' connecting with a pip'enQT which extends upth'rough the head block and isjjconnected to themain suction pipe Qt. 'Since this head block is stationary,':the :fiexible or movable connection between theihead block pipe and the main suction pipe is unnecessary and thepipe 27 is'connected di The suction'pipe suction pipe. or'passage of the head block or pressure depassages for F r tan e,

section of the head'block connects at its lower end with cross grooves upper portion of vice, whether in a filling press or finishing press, canbe connected with escape grooves or passages formed or arranged in the head blockin any suitable way adapted to form the oil from the space in the upper part of the press-cage to the suction pipe or passage connecting withthe head. asshown in Figs. 4: and 5, the cross grooves or passages 28 leading from the suction pipe to the side edges of thG'PIBSS block orpressuredevice, are formed in the lower portion of the block or pressure device, preferably between the lower end thereof screws or otherwise'on the end of the head block or pressuredevice. The particular arrangement, formation or disposition of the grooves or passages in the .head'block or and a bottom plate 29 which is fixed by pressure device and the suction pipe maybe 1 greatly varied, the purpose being to connect a suction pipe or passage to the surface or edge portions ofthe head block or part at the upper end of the cage in any way suitable'tor rwithdrawing the oil to the best advantage ;trom the space in theupper end of the press cage. The pump25 can'deliverthe oilto any desired point.

.Inthe; use of the apparatus, the pump is. i

thebranch pipe orpassage for eachpress so that the valve forany press which is not in operation can-be closed to prevent the entrance of air which would destroy the suct-ion.- V p r v I claim as my-invention: V

1. In a press, the combination of a cage in whichthe material is confined, a pressure device at one end of the cageprovided with an Oll escape passage communicating with theadjacent portionof the cage, and suction means connected with said escape passage for withdrawing oil from the portion of the cage adjacent said pressure device.

Ina press, the combination with a cage in. which the'inaterial is confined, and a.

jpressuregdeviceadapted to enter the upper end of the cage, of suctlon means including passage above-the material confining portlon ,ofsald cage communlcatlng with said oil therefrom.

-3'.;;I n avpress, the-combination-with a cage in which ,thematerial-{is'confined, zand'a pressuregdevice'; adapted tel-.enter the upper the. cage for withdrawing V end or the cage, thereby Iforming a space in the upper end of the cage unoccupied by material, of suction means in communication with said pressure device and connecting with said space for withdrawing oil therefrom.

4. In a press, the combination of a cage in which the material is confined, and a pressure device adapted to enter the upper end of the cage, thereby forming a space in the upper end of the cage unoccupied by material, the portion of said pressure device which enters the cage having an oil escape passage connecting with said space, and suction means connecting with said passage for withdrawing oil from said space.

5. In a press, the combination of a cage in which the material is confined, and a pressure device adapted to enter the upper end of the cage and having an oil escape passage in its lower portion extending to the side edge thereof, and suction means connecting with said passage for withdrawing oil from the upper portion of the cage.

6. In a press, the combination with a cage in which the material is subjected to pressure, of an escape passage for oil from the upper portion of the cage exteriorly of material confined in the cage, and a device connected with said passage for withdrawing oil from the upper portion of the cage.

7. In a press, the combination of a cage in which the material is confined, and a pressure device adapted to enter the upper end of the cage and having an oil passage therethrough, of oil receiving grooves in the lower face of said pressure device and in communication with said oil passage, and suction means connecting with said passage for withdrawing oil from the upper portion of said cage.

8. In a press, the combination of a cage in which the material is confined, and a pressure device movable to enter the upper end of the cage to compress material in the cage, of an oil escape duct movable with said pressure device for withdrawing oil from the upper portion of said cage.

Witness my hand, this 5 day of April,

ALFRED W. FRENCH. \Vitnesses:

MARGIE WHITLOCK, R. M. DONOVAN.