US2878507A - Cylinder cleaning rack - Google Patents

Description

March 1959 w. B. RYNDERS CYLINDER CLEANING BACK 2 Sheets-Sheet 1 Filed April 1, 1957 N 02 am 55.

INVENTOR. W. B. RY NDE RS 341% W A TT'OR/VEVS March 24, 1959 w. B. RYNDERS CYLINDER CLEANING RACK 2 Sheets-Sheet 2 Filed April 1, 1957 I FIG. 3

INVENTOR. w.s. RYNDERS BYWA W A T TORNEYS United tates tent CYLINDER CLEANING RACK Wesley B. Rynders, Burger, Tex., assignor to Phillips Petroleum Company, a corporation of Delaware Application April 1, 1957, Serial No. 649,757

10 Claims. (Cl. 15-304) This invention relates to apparatus for cleaning liquid petroleum products from chemical storage and shipping cylinders. In one aspect it relates to apparatus for cleaning such cylinders, which apparatus is intended to minimize manual labor involved in the cleaning operation.

Cleaning of barrels, drums, and cylinders and like containers ordinarily involves considerable manual labor. Many devices have been conceived for reducing the manual effort in such operations. To my knowledge none have proven entirely acceptable for handling metal cylinders such as those used in transportation and storage of chemicals and liquid petroleum products. Cylinders for storing and/or for shipping liquefied normally gaseous products usually are made of heavy-walled metal stock so that during use the cylinders will not be dented or seriously damaged. Heavy-walled metal cylinders, that is, those of appreciable size, are heavy and an apparatus designed to relieve an operator of need for lifting such cylinders is highly desirable.

An object of this invention is to devise an apparatus for cleaning, storage and shipping cylinders.

Another object of this invention is to devise an apparatus for cleaning such cylinders which eliminates much manual labor.

Still another object of this invention is to devise apparatus for such use which is rugged, easily operable and relatively inexpensive to construct and to maintain.

Other objects and advantages will be realized upon reading the following disclosure which, taken with the attached drawing, forms a part of this specification.

In the drawing Figure 1 is a plan view partly in section, of an installation of my cylinder cleaning apparatus and taken along the line 1--1 of Figure 2.

Figure 2 is an elevational view, partly in section of such an installation.

Figure 3 is an elevational view, partly in section and on an enlarged scale of one cylinder handling unit of my invention.

Figure 4 is an elevational view of a portion of the apparatus of my invention.

Figure 5 is a perspective view of a portion of the apparatus of Figure 4.

According to my invention I have devised a storage cylinder cleaning rack assembly comprising, in combination, a rigidly supported hollow upright post, a slide movable axially in said post, a pair of oppositely disposed slots in said post, the long axes of said slots being disposed axially with respect to said post, an opening through said slide normal to the axis of said post, a clamp assembly for holding a storage cylinder, one end of said clamp assembly extending through said slots and said opening, means holding said clamp assembly from axial movement, said clamp assembly being adapted to rotate, means for lifting said clamp assembly, this latter means comprising a pivoted lever, a third vertically elongated slot in said post, said lever extending into said slot and a storage cylinder held by said clamp assembly upon downward movement of said lever on the side of the pivot opposite said third slot, said pair of slots being so disposed in said post as to permit the clamped cylinder with its axis vertically disposed to rest on a rigid support, and means to introduce steam and air separately into the cylinder.

In the drawing, reference numeral 11 identifies a'concrete platform which is used as a supporting base for the individual apparatus parts which make up my cylinder handling apparatus. An inverted frusto-conical depression 12 is formed in this concrete platform to act as a sump from which liquids drain into a cylindrical opening 14. Extending through the concrete platform at this point is an opening provided with a pipe 16 in the walls of which are openings 14a for drainage of liquid from cylindrical opening 14 into a drain pipe 17, (Figure 3). If desired, the cylindrical opening 14 is provided with metal lining 15 for protection purposes. In order to hold lining 15 rigidly in place anchors 65 are attached thereto and embedded in the concrete, as illustrated in Figure 2. The top end of pipe 16 terminates at about being adapted to lift said slide, said clamp assembly and the same level as does lining 15. A pipe 18 also terminates at about this same level for introduction of steam and air into a cylinder, separately as disclosed hereinafter. This pipe 18 passes through the walls of pipe 16 and is connected with conduit 48 to a manifold 48a, (Figure 1). The bottom portion of pipe 16 connects with drain 17 which, in turn, is connected with a drain pipe manifold 19 which is intended to conduct all drainage liquid to a point of disposal, not shown.

Surrounding the upper edge of the frusto-conical depression 12 in the platform is an angle iron ring 13. This ring is also attached to anchors 65 for holding rigidily in place. This ring 13 is, of course, also for the purpose of protecting the edges of the concrete against breakage.

A metal post 25 is embedded in the concrete as illustrated in Figure 3 for rigid support. If desired, this post is welded to ring 13, or, if desired, a section of ring 13 is cut out to accommodate the post. In any event, post 25 is held rigidly in place. Within post 25 is an elongated movable slide 29 which is illustrated as being closed at both ends. If desired, however, slide 29 can be opened at both ends or opened at the bottom but closed at the top. If this cylinder washing assembly is constructed out-of-doors, it is preferable to have the upper end of the slide closed, or, it open and the bottom closed, drain holes should be provided in the bottom closure. A pair of oppositely disposed slots 27 are positioned in post 25 as illustrated in Figure 3. A clamp assembly 30 is provided at one end with a small diameter shaft or pipe 36 and at its center portion with a larger diameter connecting pipe 34 and at its other end with the actual clamping portion of the apparatus. Connector pipe 34 is attached to a circular plate 35 which, in turn, is rigidly attached to the shaft or pipe 36. A rear clamp member 33 is rigidly attached to connector pipe 34 as illustrated. This rear clamp member 33 is constructed of relatively heavy stock such as the thickness of a 16 inch sch. 40 seamless steel pipe. The front clamp member 31 is made of M3 inch thick steel stock. A hinge 32 connects these clamp members on one side and a toggle type clamp assembly 61 (Figure 4) connects them on the other side. The shaft or pipe 36, as mentioned, extends through slots 27 in pipe 25 and through an opening or openings in slide 29 and has a collar 37 attached to the protruding end by a bolt 38. Pipe 36 cannot slip to the right because of collar 37 and it cannot move to the left because of plate 35. However, the clamp assembly 30, while it cannot move to the right or left in the post, is free to rotate-about the longitudinal axis of the pipe 36 so that when a cylinder is clamped inplace as illustrated in Figure 3, upon raising the clamp assembly and cylinder sufficiently so that the neck 66 is free from pipes 18 and 16, the cylinder can be rotated'and positioned either bottom side down or bottom side up,- as desired. In order to reduce the Weight of the assembly as much as possible, openings 47 are provided in the clamp members 31 and 33;

In order to raise the clamp assemblyand cylinder I provide a lever assembly which is composed of a pipe 43' pivoted at 40 to angle irons 41. These angle irons are also embedded in the concrete platform. One end of this pipe or lever extends through a slot 42 in post 25, as illustrated, with: the end- 44 projecting thereinto about-as far as illustrated in Figure 3. The opposite end of'pipe 43 is. provided with a is usedasa foot pedal. and its endof the lever,-

Thus, up'onlowering plate 39' the lever end 44 rises thereby lifting the movable slide 29 andthe clamp assembly 30'. In this elevated position a cylinder such as cylinder 67 is raised and can be rotated to any'desired position.

As illustrated in the plan view of Figure 1, pipe-43 takes the form as shown in order to make certain that it will clear cylinder 67 at all times.

The toggle clamp assembly 61 is illustrated in Figure 4, and its operation is as follows: a latch plate 51 is attached to the front clamp member 31 by welds 60. A hinge member 57 is also attached by welding to the rear clamp member 33. A pair of links 52 are attached to hinge 57 by a bolt 55. These links are free to-rotate at hinge 57. To the opposite ends of links 52 is attached a latch block 54,- by cap screws 56. The latch block 54 is also free to rotate. The latch blockis provided with a threaded opening 59 (Figured) for accommodation of a latch screw 53 a portion of which is threaded; Reference numerals 58 identify the threaded'openings in the ends of the latch block for accommodation of the cap screws 56. With the latch block 54 assembled with respect to-the links 52the latch screw 53-is threaded into opening 59. The specific operation of this toggle clamp assembly is best seen in Figure 4; The latch screw is unthreaded afew turns and the rounded end 68 of the screw is directed into position adjacent the latch' plate 51 and then the screw is threaded further through the latch block 54 until the operator feels tightening of the s'crew.- The handle end moreuntil the clamp de'r;

In reference to Figures 1 and 2 it is noted that the drawingillustrates a three-rack installation. For convenience the three racks are identified by Rack No. 1, Rack No. 2, and Rack No. 3'. Rack No. 3 has been described'hereinabove relative to details of construction. Racks'numbered 1 and 2 are, in'some cases, constructed exactly like Rack No. 3.- This similarity of construction is carried out in case there are large numbers of cylinders ofa given size for cleaning. Racks Nos. 1 and 2 areillustrated for use with cylinders smaller than cylinder 67. For example, Rack No. 2 is' the same as llack No. 3 with theexception that a pair of slots 27a in post a are positioned lower down the post than slots 27 in post 25. In order that a cylinder will be ap proximately balanced when positioned in the clamp assembly it is obvious with a small cylinder assembly is tight around the cylin will need'bea little'further down the post than the clamp for a longer cylinder. Likewise-Rack-No.-l is-illustrated in Figure 2 as being constructed for use with a still smaller cylinder. The diameters-of the: corresponding clamp assemblies tightly drums: having smaller circumferences;

P ping outlay for steam and air is illustrated diagrammatically in Figure l. Pipes 4 8, 49 and 50 lead from a small plate 39 which of the latch screwis then pushed toward the front clamp member 31, the screw tightened that the clamp assembly for use H a and 30b are made'correspondmgly smaller inorderto hold manifold, not shown in Figure 2, to pipes 18, 18a and 18b, respectively. These pipes 48, 49 and 50 lead from the manifold 48a (Figure l) to the individual racks. A pipe 20 is provided for conducting steam, from a source not shown, to the manifold while a pipe 21 is provided for passage of air, also from a source not shown, to the manifold. A valve 22 and a valve 23 control the fiow respectively of air and steam in these pipes. Valves 24, 26 and 28 are positioned in pipes 50, 49 and 48, respectively. If Rack No. 3 only is used, then valve 28 is, of course, opened for admission of either steam or air.

In the operation of this cleaning rack assembly a cylinder, such as cylinder 67, is lifted or lowered into place over opening 14, that is, the cylinder is merely set upright in position. The clamp assembly 30, of course, has previously been opened to accommodate the cylinder. After positioning of the cylinder the clamp is closed by operation of the toggle clamp assembly 61 and when clamp assembly 30 is engaged tightly around the cylinder the valve in the top of the cylinder is removed. The operator then pushes the foot pedal 39 downward, which operation lifts the clamp assembly 30 and the cylinder 67. While holding the foot pedal 39 down, the cylinder is rotated so that its open end is downward and when the opening 66 or neck, as it may he called, is directly over pipe 18 the foot pedal is slowly released and the cylinder lowered. When the neck 66 of the cylinder is positioned over pipe 18, a pin assembly 46 is used in order to prevent a cylinder from being blown out of position by the steam in case steam is inadvertently admitted under high pressure. This pin assembly comprises a pin 63 which is-positioned in an opening 62 in post 25. So that the pin will not ever be lost it is attached to the postby a chain 64, as illustrated in Figure 3. The operator now moves to the manifold and opens valve 23 in the steam line and makes sure that valve 2.2 in the air line is closed. Valve 28 is also opened to admit steam through pipe 48 to the open end of the cylinder. Steam is admitted at a desired rate until it is believed that the cylinder is clean from all previous material. At such time valve 23 is closed and valve 22 is opened and air is admitted through the manifold, valve 28 and pipe 48 to dry the cylinder. The cylinder ordinarily dries rapidly because it is hot from the steam. When the cylinder is dry, the air is turned off and the pin 63 is withdrawn, foot pedal 39' is again depressed which operation raises the cylinder and it is rotated degrees and set on its bottom. Either the old or a new valve is inserted in the neck of the cylinder and the thus clean cylinder is then ready to be transported to storage or to a point of intended use.

In case racks numbered 1, 2 and 3 are constructed for cleaning of cylinders of different sizes, three such cylinders can be cleaned at one time by opening valves 24, 26 and 28'under which conditions steam is admitted to all'three cylinders merely by opening the steam valve 23. Steam valve 23 is closed, and valve 22 is opened and the three cylinders are dried simultaneously. Then each cylinder is uprightcd, the valves inserted and the cylinders are ready for-reuse.

In case only one size of cylinder is to be cleaned in such an installation it is obvious that all three racks are constructed exactly the same, i. e., to accommodate the same size cylinders.

In cases where onlya small numbe'r'of c'ylinder'sarc to be cleaned itm'ay be advisable to install only a single rack as, for example, Rack No. 3. Thus, any number of racks are provided depending upon the number of cylinders to be cleaned.

While the post and clamp members of the apparatus are ordinarily constructed cylinders which have been' used for storage of corrosive material it may be advisable to of corrosion resistant materials. purposes ordinary'steelis satisfactory.

of ordinary steel, in case of construct drainpipes However, for ordinary" While certain embodiments of the invention have been described for illustrative purposes, the invention obviously is not limited thereto.

I claim:

1. A storage cylinder cleaning rack assembly comprising, in combination, a rigidly supported hollow upright post, a slide movable axially in said post, a pair of oppositely disposed slots in said post, the long axes of said slots being disposed axially with respect to said post, an opening through said slide normal to the axis of said post, a clamp assembly for holding a storage cylinder, one end of-said clamp assembly extending through said slots and said opening, the longitudinal axis of said one end being normal to the axis of said post, means holding said clamp assembly from movement along the axis of said one end, said clamp assembly being adapted to rotate around the axis of said one end, means for lifting said clamp assembly, this latter means comprising a pivoted lever, a third vertically elongated slot in said post, said lever extending into said slot and being adapted to lift said slide, said clamp assembly and a storage cylinder held by said clamp assembly upon downward movement of said lever on theside of the pivot opposite said third slot, said pair of slots being so disposed in said post as to permit the clamped cylinder with its axis vertically disposed to rest on a rigid support, and means to introduce steam and air separately into the cylinder.

2. A storage cylinder cleaning rack assembly comprising, in combination, a vertically disposed, rigidly supported, hollow post, an elongated slide movable axially in said post, a pair of oppositely disposed slots in said post, the long axes of said slots being disposed vertically, a diametric opening through said slide, a toggle clamp assembly including a toggle clamp for tightly holding a storage cylinder, one end of said clamp assembly extending through said slots and said opening, the longitudinal axis of said one end being normal to the axis of said post, means holding said clamp assembly from movement along the axis of said one end, said clamp assembly being adapted to rotate around the axis of said one end, means for lifting said clamp assembly, this latter means comprising a pivoted foot lever, a third vertically elongated slot in said post, one end of said lever extending into said slot and into contact with said slide and being adapted to lift said slide, said clamp assembly and a storage cylinder held by said clamp upon downward movement of the end of said lever on the side of said pivot opposite said third slot, said pair of slots being so disposed in said post as to permit the clamped cylinder with its axis vertically disposed to rest on a rigid support, means to introduce steam and air separately into said cylinder, drain means including an inlet for disposal of liquid from said cylinder, an opening in the upper wall of said hollow post, a pin for insertion into said opening, said pin in said opening being adapted to hold said slide against upward movement, the center of said clamp being disposed a sufiicient distance from said post that the center of said clamp is disposed over said inlet to said drain means, and a support base rigidly supporting said post and said pivoted foot lever.

3. A storage cylinder cleaning rack assembly compris ing, in combination, a vertically disposed, rigidly supported, hollow post, an elongated slide movable axially in said post, a pair of oppositely disposed slots in said post, the long axes of said slots being disposed vertically, a diametric opening through said slide, a clamp assembly including a clamp for tightly holding a storage cylinder, one end of said clamp assembly extending through said slots and said opening, the longitudinal axis of said one end being normal to the axis of said post, means holding said clamp assembly from movement along the axis of said one end, said clamp assembly being adapted to rotate around the axis of said one end, means for lifting said clamp assembly, this latter means comprising a pivoted lever, a third vertically elongated slot in said post,

one end of said lever extending into said slot and into contact with said slide and being adapted to lift said slide and said clamp assembly upon downward movement of the end of said lever on the side of said pivot opposite said third slot, drain means including an inlet for dis posal of liquid from said cylinder, an opening in the upper wall of said hollow post, a pin for insertion into said opening, said pin in said opening being adapted to hold said slide against upward movement, the center of said clamp being disposed a sufficient distance from said post that the center of said clamp is disposed over said inlet to said drain means, and a support base rigidly supporting said post and said pivoted lever.

4. A storage cylinder cleaning rack assembly comprising, in combination, a vertically disposed, rigidly supported, hollow post, an elongated slide movable axially in said post, a pair of oppositely disposed slots in said post, the long axes of said slots being disposed vertically, a diametric opening through said slide, a toggle clamp assembly for tightly holding a storage cylinder, one end of said clamp assembly extending through said slots and said opening, the longitudinal axis of said one end being normal to the axis of said post, means holding said clamp assembly from movement along the axis of said one end, said clamp assembly being adapted to rotate around the axis of said one end, means for lifting said clamp as sembly, this latter means comprising a pivoted foot lever, a third vertically elongated slot in said post, one end of said lever extending into said slot and into contact with said slide and being adapted to lift said slide, said clamp assembly and a storage cylinder held by said clamp upon downward movement of the end of said lever on the side of said pivot opposite said third slot, said pair of slots being so disposed in said post as to permit the clamped cylinder with its axis vertically disposed to rest on a rigid support, means to introduce steam and air separately into said cylinder, drain means including an inlet for disposal of liquid from said cylinder, an opening in the upper wall of said hollow post, a pin for insertion into said opening, said pin in said opening being adapted to hold said slide against upward movement, and a support base rigidly supporting said post and said pivoted foot lever.

5. A storage cylinder cleaning rack assembly comprising, in combination, a vertically disposed, rigidly supported, hollow post, an elongated slide movable axially in said post, a pair of oppositely disposed slots in said post, the long axes of said slots being disposed vertically, a diametric opening through said slide, a toggle clamp assembly including a toggle clamp for tightly holding a storage cylinder, one end of said clamp assembly extending through said slots and said opening, the longitudinal axis of said one end being normal to the axis of said post, means holding said clamp assembly from movement along the axis of said one end, said clamp assembly being adapted to rotate around the axis of said one end, means for lifting said clamp assembly, this latter means comprising a pivoted foot lever, a third vertically elongated slot in said post, one end of said lever extending into said slot and into contact with said slide and being adapted to lift said slide, said clamp assembly and a storage cylinder held by said clamp upon downward movement of the end of said lever on the side of said pivot opposite said third slot, said pair of slots being so disposed in said post as to permit the clamped cylinder with its axis vertically disposed to rest on a rigid support, means to introduce steam and air separately into said cylinder, drain means including an inlet for disposal of liquid from said cylinder, the center of said clamp being disposed a sufiicient distance from said post that the center of said clamp disposed over said inlet to said drain means, and a support base rigidly supporting said post and said pivoted foot lever.

6. A storage cylinder cleaning rack assembly comprising, in combination, a vertically disposed, rigidly supported, hollow post,- an elongated slide movable axially in said post,- a pair. of oppositely disposed slots in said post, the long axes of said slots being disposed vertically, a'diametric opening through said slide, a clamp assembly for tightly holding a storage cylinder, one end of said clamp assembly extending through said slots and said opening,the-longitudinal axis of said one end being nor mal to the axis of said post, means holding said clamp assembly from movement along the axis of said one end, said clamp assembly being adapted to rotate around the axis of said one end, means for lifting said clamp assembly, this latter means comprisinga pivoted lever, a thirdvertically elongated slot in said post, one end of said lever extending into said Slot and into contact with said slide and being adapted to lift said slide and said clamp assembly upon downward movement of the end of said lever on the side of said pivot opposite said third slot, said pair of slots being so disposed in said post as to permit the clamped cylinder with its axis vertically disposed to rest on a rigid support, means to introduce steam and air separately into said cylinder, drain means including an inlet for disposal of liquid from said cylinder, an opening in the upper wall of said hollow post, a pin for insertion into said opening, said pin in said opening being adapted to hold said slide against upward movement, and a support base rigidly supporting said post and said piv oted lever.

7. A storage cylinder cleaning rack assembly comprising, in combination, a vertically disposed, rigidly supported, hollow post, an elongated slide movable axially in said post, a pair of oppositely disposed slots in said post, the long axes of said slots being disposed vertically, a diametric opening through said slide, a toggle clamp assembly for tightly holding a storage cylinder, one end of said clamp assembly extending through said slots and said opening, means holding said clamp assembly from axial movement, said clamp assembly being adapted to rotate around the axis of said one end, means for lifting said clamp assembly, this latter means comprising a pivoted foot lever, a third vertically elongated slot in said post, one end of said lever extending into said slot and into contact with said slide and being adapted to lift said slide, said clamp assembly and a storage cylinder held by said clamp upon downward movement of the end of said lever on the side of said pivot opposite said third slot, said pair of slots being so disposed in said post as to permit the clamped cylinder with its axis vertically disposed to rest on a rigid support, means to introduce steam and air separately into said cylinder, drain means including an inlet for disposal of liquid from said cylinder, and a support base rigidly supporting said post and said pivoted foot lever.

8. A storage cylinder cleaning rack assembly comprising, in combination, a vertically disposed, rigidly supported, hollow post, an elongated slide movable axially in said post, a pair of oppositely disposed slots in said post, the long axes of said slots being disposed vertically, a diametric opening through said slide, a clamp assembly for tightly holding a storage cylinder, one end of said clamp assembly extending through said slots and said opening, means holding said clamp assembly from axial movement, said clamp assembly being adapted to rotate around the axis of said one end, means for lifting said clamp assembly, this latter means comprising a pivoted lever, a third vertically elongated slot in said post, one end of said lever extending into said slot and intocontact with said slide and being adapted to lift said slide and said clamp assembly upon downward movement of the end of said lever on the side of said pivot opposite said third slot, said pair of slots being so disposed in said post as to permit the clamped cylinder with its axis vertically disposed to rest on a rigid support, means to introduce steam and air separately into said cylinder, drain means including an inlet for disposal of liquid from said cylinder, and a support base rigidly supporting said post and said pivoted lever.

9. A storage cylinder cleaning rack assembly comprising, in combination, a vertically disposed, rigidly supported, hollow post, an elongated slide movable axially in said post, a pair of oppositely disposed slots in said post, the long axes of said slots being disposed vertically, a diametric opening through said slide, aclamp assembly including a clamp for tightly holding a storage cylinder, one end of said clamp assembly extending through said slots and said opening, means holding said clamp assembly from axial movement, said clamp assembly being adapted to rotate around the axis of said one end, means for lifting said clamp assembly, this latter means comprising a pivoted lever, a third vertically elongated slot in said post, one end of said lever extending into said slot and into contact with said slide and being adapted to lift said slide and said clamp assembly upon downward movement of the end of said lever on the side of said pivot opposite said third slot, drain means including an inlet for disposal of liquid from said cylinder, the center of said clamp being disposed a sufdcient distance from said post that the center of said clamp is disposed over said inlet tosaid drain means, and a support base rigidly supporting said post and said pivoted lever.

10. A storage cylinder cleaning rack assembly comprising, in combination, a rigidly supported hollow upright post, a slide movable axially in said post, a pair of oppositely disposed slots in said post, the long axes of said slots being disposed axially with respect to said post, an opening through said slide normal to the axis of said post, a clamp assembly for holding a storage cylinder, one end of said clamp assembly extending through saidslots and said opening, the longitudinal axis of said one end being normal to the axis of said post, means holding said clamp assembly from movement along the axis of said one end, said clamp assembly being adapted to rotate around the axis of said one end, means for lifting said clamp assembly, this latter means comprising a pivoted lever, and a third vertically elongated slot in said post, said lever extending into said slot and being adapted to lift said slide and said clamp assembly upon downward movement of said lever on the side of the pivot opposite said third slot.

References Cited in the file of this patent UNITED STATES PATENTS 1,280,731 Herr Oct. 8, 1918 1,322,439 Herr Nov. 18, 1919 1,475,536 Bonine et al. Nov. 27, 1923 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 2,878,507 March 24, 1959 Wesley B. Rynders It is hereby certified that error appears in the -printed specification of the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 2, line 35, for "rigidily" read rigidly column 6, line 72, after "clamp' insert is column '7', line 37, claim '7, line 62, claim 8; and column 8, line 23, claim 9, before "means", each "occurrence, insert the longitudinal axis of said one end being normal to the axis of said post, column "7, line 38, claim '7; line 63, claim 8; and column 8, line 24, claim 9, after "movement", each occurrence, insert along the axis of said one end column '7, line 38, claim '7; line 62, claim 8; and column 8, line 24, claim 9, strike out "axial", each occurrence,

Signed and sealed this 22nd da; of December 1959.,

SEAL) ttest: KARL H. AXLINE ROBERT C. WATSON Attesting Officer Commissioner of Patents

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