US2120482A - Jordan engine with crimped members - Google Patents

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June 14, 1938. LE RBO'LTON 2,120, 2

JORDAN ENGINE WITH CRIMPED MEMBER Filed April 18, 1935 Patented June 14, i938 v UNITED STATES PATENT OFFICE JORDAN ENGINE WITH CRIMPEDMEMBEBS Archer Le Roy Bolton, North Andover, Masa, assiguor to John W. Bolton & Sons, Inc., Lawrcnce, Mass" a corporation of Massachusetts Application April 18, 1935, Serial No. 17,056 6 Claims. (CI. 92-21) This'invention relates to Jordan engines such as are used in refining paper stock in the manufacture of-paper. Such Jordan engines include an. outer truncated conical shell member from which cutting or stroking members project inwardly, and a plug member which has members which project outwardly therefrom, the plug revolving inside the shell and the projecting members coming very close to being in contact with each other.

The inwardly projecting members from the shell are known as knives,'and are generally arranged in two or more sets longitudinally, the knives of each set being bent at the middle, while 15 the projecting members of the plug are generally known as bars and usually extend in a substantially straight line from the large to the small, end, or part way from the large to the small end.

The stock is usually introduced at the small end and travels to the large end at the same time that it is carried around by the plug at a high rate of speed. As the'sto'ck treating members or bars of the plug and the knives or the shell have their faces very close together, there is a brushing and 23 separating, and to some extent a cutting action,

which takes place as the stock travels through A the engine.

The speed is very great and the power in some cases very great, so that it has often been found necessary to make the projecting members quite thick and of very strong material. I have discovered that by crimping the operating edge of all or some of the knives, whether bent or straight, or of the bars in the plug, particularly if the crimped edges are operating against straight edges, a cutting action takes place and as a crimped edge is much stronger than a straight edge of the same thickness, 1 can reduce the thickness of these members without injuring their strength.

What I will call the bottom part is that part which ordinarily is held between tapering separators of wood or other material, and what'I will callthe top part is the part lengthwise which projects from some of these separators. the top edge being the free edge and being the part which I crimp.

As the top part ofthe knives or bars with the top of the separators form longitudinal channels,

50 the crimping also acts to some extent-as a baiile and changes the direction of the current of stock flowing through the channel.

I am aware that the edges of beater bars which are carried on the surface of the cylindrical 55 beater rolls of beater engines have been corrugated, but I believe I am the first to use crimped cutting edges in a Jordan shell or a Jordan plug.

In a beater, the stock travels and flows at a right angle to the bars, while in a Jordan, it travels spirally over the knives but flowsbetween them.-

' In the drawing, Fig. l is an isometric view 01' part of the end of a Jordan shell showing parts or threeconical sections of filling, each provided with angular knives with crimped edges and part I of a Jordan plug. 1

Fig. 2 is a view similar to Fig. 1' showing straight knives, some of which are crimped and some of which are not crimped.

Fig. 3 is an isometric view of the small end of a Jordan plug with straight crimped bars.

Fig. 4 is an elevation showing part of a crimped member for a Jordan engine, shown as partof a bent knife but it also serves for a straight knife or a straight bar.

Fig. 5 is a'plan view of Fig. 4.

Fig. 6 is'a vertical section on line 6-6 of Fig. 5.

Fig. '7 is a view similar to Fig. 6 of a membe with a sharpened edge.

Fig. 8 is an isometric view of a modified form of stock treating member having a crimped edge.

In the drawing, S represents the permanent or fixed shell of a Jordan engine, and in Fig. l, A represents the lining as a whole, while in Fig. 2,

B represents the lining as a whole. P represents the plug which cooperates with shell S and Q represents the cutting or working surface of the p ug.

In Fig. l, the lining A is made up of a plurality of angularly bent knives K, between which are shown the usual angularly bent separators 90 of wood or other suitable material. These separa'tors taper lengthwise from the large end to the small, and are shown as of the usual keystone cross section. Other parts of this lining may be 40 an anchor bar or bars, cheek pieces and a wedge or wedges, all of which are well-known and com-' monly used in the trade.

Each knife, such as K, is formed or made of a strip of metal with substantially parallel lengthwise edges and ends, being substantially of rectangular shape, and originally being flat and straight and of the same thickness throughout.

i represents the bottom edge, and 2 the bottom part longitudinally, while 3 represents the top part and 4 the top edge. The bottom part 2 extends to a height which is the same as, or slightly higher, than the heightor thickness of the adjoining separators, and the top part 3 is crimped or corrugated, which means formed with con- The crimping makes the top part and top edge" considerably thinner than the bottom part. Each knife K, as shown, is also bent at 9 in the usual manner and its top edge 5 may be sharpened as shown in Fig. 7. This sharpening, preferably, is accomplished while the strip from which it is r made, is straight and flat, before crimping.

As shown at H in 'Fig. 2, the knives can be straight and the bend 9 omitted so that H represents the bottom edge, [2 the bottom part, I:-

the top part, and H the top edge.

In the same way, straight bars such as C, forming with the tapering separators 20, the operating partQ of the plug 1? would ordinarily be without any bend such as 9. In these bars C, 2i represents ,bottom edge, 22 the bottom part, 23 the top part, and 24 the top edge.

Fig. 4 is a side elevation of part of a crimped knife or bar, and Fig. 5 is a plan view of the same, while Fig. 6 is an exaggerated cross section to show the thinness of the crimped part as compared to the original thickness. Fig. 7 is like Fig. 6 but with the cutting edge sharpened.

Instead of using a metal strip of the same original thickness throughout, in some cases, I may use a member such as E, in which the bottom part 20, from shoulder 32 down to the bottom edge 3|, is very much thicker than the top part 33 and the crimped top edge 34 sharpened at 35.

As shown in Fig. 2, some of the cutting or stock treating members can be crimped as shown at H, while others may be uncrimped and straight as shown at L. v

The co-action of a crimped. member in the shell with an uncrimped member on the plug, or vice versa, produces a very desirable cutting action although crimped member against crimped memher works very well, as also shown in Fig. 2.

I prefer to use for my stock treating members, strips of high alloy steel of approximately over 200,000 pounds tensile strength per square inch in place of the usual carbon steel of approximately 60,000 pounds per square inch, and I prefer to make the ratio of the thickness on my metal strips to their height more than 1 to 10. A preferred construction is A; inch thick and two inches in height, the crimping extending down about -of an inch and being approximately of an inch at the'cutting edge crossways from the outside of one curve to the outside of the other. With a 15 inch strip, this crimpi g spreads the cutting edge to 18 or 20 inches.

The crimping, therefore, reduces the thickness of the top part from to 3%, and the top edge can conveniently be sharpened so that it is about of an inch in thickness.

It is obvious that the Jordan shell lining, such as shown in Figs. 1 and 2, or the Jordan plug jacket. such as shown in Fig. 3, might be of the old type of lining or jacket made up of a large number of independent knives, bars, and separators, or of the preassembled type. either split or unsplit, which are assembled and held together at the machine shop and shipped as a unit to the paper mill.

I claim:

1. The-combination in a Jordan engine which includes a truncated conical shell and a truncated conical plug; of tapering separators; and cutting members between some of the separators, each made of a strip of metal which is flat along its bottom part and which projects from the adjoining separators and is crimped along its top part and top edge.

2. The combination in a Jordan engine which includes'two members which are a truncated conical shell and a truncated conical plug; of tapering separators in each; cutting members between some of the separators carried by one member, each made of a strip of metal which'is flat along its bottom part and which projects from the adjoining separators and is crimped along its top part and top edge, which edge is proximate the uncrimped edge of a cutting member carried by the other Jordan engine member; and such other cutting member and such other Jordan member.

3. The combination with a truncated conical Jordan engine shell; of angularly bent, tapering separators of keystone cross section; and cutting members which are angularly bent laterally between some of the separators, each cutting member being made of a strip of metal which is fiat along its bottom part and which projects from the adjoining separators and is crimped along its top part and top edge.

4. The combination with a truncated conical member of a Jordan engine; of tapering separators of keystone cross section; and cutting members between some of the separators, each made of a strip of metal which is flat along its bottom part where it comes in contact with separators and which projects from such separators and is crimped along its top part and top edge.

5. The combination in a preconstructed truncated conical Jordan engine shell lining unit; of angularly bent, tapering separators, of keystone cross section; and cutting members which are angularly bent laterally between some of the separators, each cutting member being made of a strip of metal which is flat along its bottom part and which projects from the adjoining separators and is crimped along its top part and top edge.

6. A preconstructed bodily transportable truncated conical member for a Jordan engine made up of tapering separators of keystone cross section; and cutting members between some of the separators, each made of a strip of metal which is flat along its bottom part where it comes in contact with separators and which projects from such separators and is crimped along its top part and top edge.

ARCHER LE ROY BOLTON.

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