US1335466A - Extrusion-press - Google Patents

Description

F. E. STEVENSON.

EXTRUSION PRESS.

APPLICATION FILED sEPLz, 1919.

Panted Mar. 30,1920.

' 3 SHEETS-SHEET l.

F. E. STEVENSON.

EXTRUSION PRESS.

APPLicAT|oNF|LED'sEPT,2,1919.

1,385,466, Patented Mar. 30, 1920.

3 SHEETS-SHEET 3.

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FRANCIS E. STEVENSON, OF MOUNT GILEAD, OHIO, ASSIG-NOR TO THE HYDRAULIC PRESS MANUFACTURING COMPANY, 0F MOUNT GILEAD, OHIO, A CORPORATION OF OHIO.

EXTENSION-PRESS.

To all whom t may concern:

Be it known that I, FRANoIs E. STEVEN- soN, 4a citizen of the United, residingv at lMount Gilead, in the county of Morrow and expansion joints in concrete roads, sidea walks, and in buildings for preventing the cracking or breaking of the concrete. Such strips have heretofore commonly been made by passing the material through rolls and then slitting the sheets thus produced to Y provide strips of the desired width and thickness. Ordinarily the asphalt is first melted and poured into pans which have been previously coated or prepared in such manner as to prevent the material from sticking to the pans. When cool the material is emptied fromthe pans and placed in atempering bath of warm water, after which it is rolled and divided in the manner before explained. Y

I have found that;` these operations may be performed in a much simpler way.

According to ymy' invention, the asphalt is removed from the containers by cutting and stripping off the metal sheath or casing and is then rolled into a press which is provided with a plunger operated by compressed air which forces the cylindrical mass of material into the chamber of they press. The press plunger or ram is then moved into line with the material and hydraulic pressure is applied for forcing the material out through suitable dies in the form of a ribbon or strip Vof the desired size.

' The die is made in adjustable sections by means of which the widthand thickness of the strip may Ibe varied at will.

In the accompanying drawings Figure l shows a side elevation of an eX- trusion press embodying my improvements.

Fig. 2 is a top lan. view thereof.

Fig. 3 shows a ongitudinal vertical section of the press.

Specication of Letters Patent.

-is admitted to the cylinder E by Patented Mar. 30, 1920.

Application filed September 2, 1919. Serial No. 321,080.

Fig. 4 is a view partly in section and partly in elevation illustrating the manner in which the material is forced through the die.; i

Fig. 5 is an .end elevation of the press.

Fig. 6 is a 'View partly in top plan and partly in horizontal section, showing particularly the manner in which the cylindrical mass of material is inserted in the press cylinder. v

Fig. 7 is a cross sectional view, illustrating particularly the manner in which the press ram or and out of position in line with the press cylinder.

The press is supported on heavy frame pieces A and B tied together by rods C. The end frame A carries the cylinder D plunger is moved sidewise into of the press which is formedvwith a cylindrical portion al and a tapered` part d. The frame B carries a cylinder E within which operates the piston F to whichis attached a platen G, sup orted and guided by two of the rods C. Hydraulic pressure the pipe c and serves to move the piston and platen in one direction, 'z'. e., toward thecylinder D. The piston and platen are moved in the opposite direction by a piston H carried by a cross head I which is connected withthe platen G by rods G. The piston H op,- erates in a cylinder J to which hydraulic pressure is admitted through a pipe j.

It will be understood that when pressure is admitted at e, the piston F, platen G and piston H are moved in the same direction, e., toward the cylinder D and that when pressure Vis admitted at j (the piston then being moved to its full extent in the cylinder J) the platen G, piston F and piston H will be returned to their normal positions.

The platen Gcarries an extrusion plunger .K which operates in the cylinder D, but this plunger is movable sidewise on the platen for a purpose hereinafter described. For this purpose the plunger is formed with a lframe 7c which is guided by grooved flanges 'g on the platen. moved back and forth sidewise by a screw L having a hand-wheel Z and engaging the frame 7c of the plunger.- The screw is supported in a lug rigid with the platen G.

The piston piston is a cylinder M, inclosing a piston N,

is hollow and within this.

The plunger is A operate on asphalt, it may be made to operreadily removed from the cylindrical mass i position shown 1n Fig. 6, i. e.,

air is thus admitted the piston N in'oved back tothe position shown in Fig. 3,

' cylinder D and close Lto the'end of the mass material through the die' the greater hydrau-A v tion al of said cylinder. It will be observed g, issue@ y the rod n of which extends through the of its stroke and as this piston is connected platen Gr and carries a head n. Air is adin the manner before described with the mitted to the opposite ends of the ,cylinder platen G and therefore with the plunger K, M by pipes m, m. T indicates a table1 to said piston and plunger will be withdrawn receive the cylindrical mass of material to from the extrusion cylinder. The platen be operated upon. It is supported on two and plunger may thenibe moved by means of of the rods C. v the screw L to one side in the manner before While the press is especially intended to fflescriled and another operation may be perorme ate on various kinds ofplastic material or Any suitable die may be employed, but on other material, suchV as carbon. Asphalt preferably the die is made in adjustable secis usually placed on lthe market in cases or tions so las to vary the-size of the strip or sheaths made of sheet metal which can be ribbon forced from the press. The die may be made adjustable -to varyA not only the by cutting and stripping 'oif v the sheath. thickness but also the Width. of the strip. When the sheath is thusremoved the cylindrical mass X may be placed on the table T which has been found suitable for the purand rolled into the position shown by dotted poses of this invention. lines in Fig. 6, in line with the cylinder D. )As shown more particularly in Figs. 3 and At this time the plunger K should be in the 5, the die comprises a stationary member, Rf, out of line and a movable member S. The stationary with the cylinder. It is moved to this (posimember 'R is bolted to the end ofthe cylintion by means of the screw L. At this time vder D. The movable or adjustable member also the piston N is at the limit of its rear S comprises a cross piece s and two downstroke. If now air be admittedby means .wardly extending arms s which are inclosed of the pipe m to the cylinder M, the piston in guides 1 projecting from the end of the lwith its head n will be moved toward the cylinder. The die member S may bemoved cylinder D and will move thel cylindrical toward andufromI the member R by means inof screw bolts U, carried by a ange V prodicated in Fig. 6, which ligure shows the jecting from the end of the cylinder D. 4 mass X moved partiallyinto .the cylinder, The strips of material produced may be but by the continued movement of the piston carried away in anyv suitable way; for inthe mass will be fully inserted into the porstance, by an endless belt'W, in the manner indicated in Fig. 4.

Experience has, demonstrated that strips or ribbons of asphalt, carbon or other simimass X into the cylinder in the manner that the piston N is operated by compressed air; in this way a saving of hydraulic pressure is obtained although hydraulicpressure may be used for this purpose. mass X has been thus inserted air is admitted to the cylinder M through the pipe m', air from the opposite end of the cylinder being exhausted in any suitable way.

necessary after the cylindrical will be quickly inserted inthe extrusion cylinder and the hydraulic pressure on this mass may then the screw L may be operated to move be properlyl controlled to produce the dethe plunger Kv into position in front of the sired results.

I claim as my invention of material X. If, now, hydraulic pressure be admitted to the cylinder Eythrough the terial, comprising an extrusion cylinder havpipe e the plunger K will be operated by hying a body portion and a tapered portion draulic pressure to press the material gradwith a restricted discharge orifice, Ameans ually through a suitable die at the end of moving longitudinally-of the cylinder D. It will be observed that by moving l piston to insert the mass of material into forcing the material into thetaperedp'orthe cylinder D such operation mayv be tion thereofV and out through the restricted quickly performed, but whenV pressing the orifice. I

I have illustrated, however, a form of die lar material may be much more expedi- After the tiously produced by a machine of the kind Y herein shown and described than by the mass is onceV When placed in position in the press. The mass isy l. Apparatus for forming strips of mai the cylinder for. a l a mass of material endwise into theemploying air pressure and a relatively light body portion thereof, and other means forl 2. Apparatus for forming strips of ma- A lic pressure is employed which operates terial, comprising an extrusion cylinder havmore slowly andsuch relatively slow operation is, of course, desirable. After the massq provided with a restricted of material has been forced through the die, hydraulic pressure may be admitted to the longitudinally of the cylinder for moving cylinder J through the pipe j. At of course the piston H is at the inner end portion of the ycylinder and upto the tapered discharge orithis time a mass of material endwise into the body portion thereof, and other means for forcing the material into the tapered portlon thereof and out through the die.

3. Apparatus for forming strips of material, comprising an extrusion cylinder provided with a restricted discharge orifice, a table or supporty for a mass of materlal, Huid-operated means forfmoving the mass 0f material into the cylinder, and Huid-operated means for forcing the material through the discharge orifice.

7. Apparatus for forming strips of map 4'. Apparatus for forming strips of material, comprising an extrusion cylinder provided With a restricted discharge orlce, a

tableor support for the mass .of material,V

means operated by air, for moving the mass of material into the cylinder, and means operatedby hydraulic pressure for forcing the material through the discharge orifice. v

5. Apparatus for forming strips of material, comprising an extrusion cylinder, an air-operated piston for moving the mass of material into the cylinder, a plunger or ram for forcing thev material through the discharge orifice, hydraulic means for `operating said piston or ram, and means for moving the piston or ram sidewise into and out of 4position in line With the cylinder.

6. Apparatus for forming strips of material, comprising an extrusion cylinder provided With a restricted discharge opening equipped with a die, a table associated with thecylinder, fluid-operated means for moving a mass of material from the table into the c linder, 'Huid-operated means for forcing t e material through the die, and means for moving sidewise said last-'mentioned uid-operated means for the purpose'speciterial, comprising' an extrusion cylinder havlng a restricted -discharge orifice, a table associated With the cylinder for supporting a mass of material, a plunger or ram for forcing material through the die, a platen on Which said plunger or ram is supported, means for moving the ram sidevvise inthe platen into and out o-fposition in line with the cylinder, a hydraulic cylinder associated With the platen, a piston carrying the platen and Which operates in said cylinder, a

cylinder Within said iston, a piston operating in said last-mentioned cylinder, a piston -head connected With the piston and adapted to engage a mass of material and move it intothe extrusion cylinder, andy means `for operating said last-mentioned-piston. Y

8. Apparatus `for forming strips of material, comprising an extrusion cylinder pro- `vided with a restricted vdischarge orifice, a

table associatedl with said cylinder for supporting a mass of material, a plunger or ram for forcing material from the extrusion cylinder through the discharge orice, a platen carrying` saidr ram or plunger, means for moving` the ram sidewise in said platen, a

' piston supporting the platen, a cylinder in In testimony whereof I have hereunto sul),n

scribed my name. f

FRANCIS E.- sTEvENso-N.v

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