US2332940A - Tank cleaning apparatus - Google Patents

Description

5 Sheets-Sheet 1 Oct. 26, 1943. c. l-:LqsE'NKE TANK CLEANING APPARATUS v Filed May 6, 1940 Octf 26, 1943. c. E. sENKE TANK CLEANING APPARATUS Filed lay 6, 1940 5 Sheets-Sheet 2 la INVENTOR. CZWZQSE $672763 -z-.SATTORNEYS Oct. 26, 1943. c, E. sENKE v TANK CLEANING APPARATUS 5 Sheetzs-Sheet` 3 Filed May 6. 1940 vas ATTORNEYS.

c. E. sENKE 2,332,940

TANK CLEANING APPARATUS Oct. 26, 1943.

5 Sheets-Sheet 4 Filed nay e,v 1940 Wwf@ aarzelrsenke BY Mfw Oct. 26, 1943. c. E. sENKE TANK CLEANING APPARATUS 5 Sheets-Sheet 5 Filed May 6, 1940 INVENTOR.

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Patented Oct. 26, 1943 UN ITE-D STAT ES PAT ENT OFFICE 26 Claims.

Application May 6, 1940, Serial No. 333,590

(Cl. ZIO- 206) The present invention relates to tank cleaning apparatus, and more particularly to means for removing from liquid storagetanks such, for eX- ample, as storage tanks for fuel oil and other liquids, the sludge, sediment, or other refuse material which collects or is deposited therein during use. The present invention is a continuation in part of my ccpending application, Serial No. 136,306, led April 12, 1937.

An object of my invention is to provide an efcient apparatus for rapidly and effectively cleaning fuel oil or gasoline tanks or tanks for containing other liquids, particularly that type of `tank through which only a small opening is available for the insertion of cleaning tools.

Another object of my invention is to provide apparatus for scrubbing, scraping, and ushing substantially the entire inner side walls of a liquid storage tank so as to loosen and collect the sludge, sediment, or other refuse material, and thus render the refuse material capable of being sucked or drawn'by the apparatus of my invention, from the tank.

Another object of my invention is to provide an eicient apparatus which can be readily in- 'serted through the relatively small opening norso that a tank of substantially any size, shape and location may be effectively and expeditiously cleaned.

My invention further contemplates the provision of apparatus which, after insertion in the tank through the usual small lling opening therein, may be manipulated effectively to actuate-any one of various tools, located at the end of the apparatus, to sweep the tools over substantially the entire bottom and side walls of the tank so as to flush the tank and loosen and remove scale, rust, sludge, sediment, water or other refuse materials fromthe tank.

Other objects and advantages of my invention will 'be particularly pointed out in the claims and will be apparent fromthe following description,.when taken in connection with the accompanying drawings, in which:

Fig. l is a sectional view illustrating an underground tank with which the tank cleaning apparatus of my invention, shown generally, is adapted to be used;

Fig. 2 is an enlarged view, partly in section, showing a portion of the apparatus of Fig. 1, illustrating the manner in which the tool actuating structure is inserted and supported in the tank with the working or tool end of the apparatus on the bottom of the tank;

Fig. 3 is aside elevation of a portion of Fig. 2, showing the tool, theyflexible'hose therefor, and the tool and hose actuating parts in their in line position;

. Fig. 4 is a view showing the suction tool and hose actuating mechanism, as viewed from the top thereof; l

Fig. 5 is a View taken substantially on the line 5 5 of Fig. 4, in the direction indicated by the arrows;

Fig. 6 is a View taken substantially on the line 6 6 of Fig. 4, in the direction indicated by the arrows; l

Fig. 7 is a View showing a section of the hose adjacent the tool end;

Fig. 8 is a view, partly in section, taken substantially on the line 8 8 of Fig. 7, in the direction indicated by the arrows;

Fig. 9 is a sectional View taken substantially on the line 9 9 of Fig. 7, in the direction indicated by the arrows;

Fig. l0 is a sectional View of the iiushing and suction tool adapted to be used in the apparatus of my invention; t

Fig. 11 is a View taken substantially on the line l I ll of Fig. l0, in the direction indicated by the arrows;

Fig. 12 is a View showing a brush for scrubbing the inside of the tank japplied to a somewhat modied form of iiexible tool actuating apparatus;

Fig. 13 is a top View of Fig. 12;

Fi-g. 14 is a horizontal sectional View of the flexible tool actuating apparatus of Fig, 12;

Fig. 15 is a view taken substantiallyon :the line |5 l5 of Fig. 14, in the direction indicated by the arrows;

Fig. 16 is an enlarged Fig. 12;

Fig.. 17 is a top View, partly in section, of the brush and its supporting parts, showing the spring for holding the brush in the proper position for use;

Fig. 18 shows a modified form of suction tool which may be used with the apparatus of my invention;

Fig. 19 shows a `view of the brush of modified formr of myl invention,

particularly useful for cleaning tanks so located that the head room is limited, as in a cellar tank;

Fig. 20 is a View, partly in section, showing the tool and flexible hose actuating apparatus of Fig. 19 on an enlarged scale;

Figs. 21 and 22 show the complementary sections of tubing used in making up the tool and flexible hose actuating apparatus of Fig. 19;

Fig. 23 is a View, partly in section, showing a modified form of flexible hose which'may be used with the tank cleaning apparatus shown in Fig. 19;

Fig. 24 is a sectional View taken substantially on the line 24--24 of Fig. 23, in the direction in dicated by the arrows;

Fig. 25 is a View showing another form of tool and flexible hose actuating apparatus;

Fig. 26 is a view of the apparatus ofV Fig. 25, equipped with an extension for cleaning tanks of greater depth;

Fi-g. 27 is a view showing a modified form of tool and flexible hose actuating apparatus, having mounted onv the end thereof a combined scraping, suction, and flushing tool;

Fig. 28 is a sectional view showing the com bined scraping, suction, and flushing tool of Fig. 27;

Fig. 29 is a perspective view showing the scraper bar assembly of the tool of Fig. 28;

Fig. 30 is a View taken substantially on the line 30-30 of Fig. 28, in the direction indicated by the arrows; and

Fig. 3l is a view showing the tool of Fig. 30 in operation.

Sludge, sediment and other refuse materials accumulate on the bottom and side Walls of tanks used for containing fuel oil, gasoline, and other liquid materials. This sludge and sediment collects or is deposited, in particular, on the bottom and side walls of fuel oil tanks and the invention will be described in this connection, although it will be understood that the apparatus has otherl uses. This sludge consists of scale Vand rust which form on the inside of the tank and tend to gradually drop to the bottom ofthe tank. In addition, sediment accumulates from the oil. Moreover, because of temperature changes, condensation occurs on the inside of the tank.

The sludge or sediment produced by this mixture of materials is extremely dimcult to remove from the tank bottom and walls, particularly in the case of a tank for the storage of fuel' oil. The sludge or sediment should be removed from a fuel oil tank as it is likely to be drawn through the suction fuel line toward or to the burner, with the result that the suction fuel line strainer and the burner nozzle are likely to become clogged. The apparatus of my invention has been developed for the purpose of removing such sludge, sediment, water or other waste materials accumulating in fuel oil, gasoline, or other liquid storage tanks.

A further difficulty encountered is that while tanks are usually installed horizontally, various factors, including frost in the case of ground tanks, tends to tip the tank perhaps in a direction away from the filling opening. Moreover, particularly in the case of gasoline tanks, Water accumulates and, of course, settles at the lowest point in the tank. 'I'he apparatus of my invention is adapted to remove such refuse material, including water, from the portions of the tank most remote from the filling opening.

The storage tanks with which my invention is concerned may be variously located as underground or in a basement where head room is an important factor. Moreover, the tanks may be of various sizes and shapes and the small openings through which the tanks must be cleaned may be arranged so that access thereto is diillcult. For this reason various arrangements of apparatus must be available for meeting the variable conditions encountered. I, therefore, have provided flexible apparatus for meeting these variable conditions so that a tank of most any size, shape and location may be cleaned.

In Fig. 1 I have illustrated an underground fuel oil supply or storage tank, generally indicated by the numeral II. While I have shown the invention, in this particular view, as applied to an underground tank, it will be appreciated that this is merely for purposes of illustration and that the apparatus shown may be used with tanks otherwise located. The tank may be of any desired size or shape, although usually fuel oil storage tanks are cylindrically or somewhat ovally shaped. The apparatus, by way of illustration, will be described, insofar as its operation is concerned, in connection with the cleaning of tanks having a bottom with upwardly curving side walls since this is the most usual type encountered. When the tank is buried beneath the ground level, the inlet opening I2 thereof is customarily provided with an inlet pipe I3 which projects to or above the ground level. The pipe is normally covered by a cap (not shown) and enters the tank through, usually, a threaded boss I5.

The apparatus for removing the sludge, sediment, or other Waste material from the tank comprises, in general, a flexible member or hose. generally indicated by the numeral I4, a flexible member or hose actuating apparatus, indicated as a whole by the numeral I6, and a tool I1 connected to the flexible member. The tool and the flexible member or hose are adapted to be manipulated or moved over the bottom and portions of the side walls of the tank by the actuating ap paratus I6.

The illustration in Fig. l is that of an apparatus for flushing the tank or sucking the sludge or sediment from the bottom and side walls of the tank and, therefore, the flexible member is in the form of a hose, a section of which is shown in Fig. 9. When the apparatus is to be used merely to brush, scrape or scrub the inside of the tank, a flexible rod, to which a, brush or other implement is attached, may be used instead oi a hose. Since, however, the apparatus has been designed particularly for cleaning the tank and removing the sludge from the inside of the tank, it is preferable that the flexible member I4 be hollow and in the form of a hose.

The outer end of the hose may be connected in any suitable manner, as shown in Fig. 1, to a combined suction and pressure pump I8. A pipe I9 is connected to the pump I8 and serves as an inlet for flushing materials, or as an outlet for the sludge. The pump is driven by a, motor 2|. The pump may be of such type that, upon reversing the direction of rotation of the motor, the pump may be used alternately as a vacuum or pressure pump. When used as a vacuum pump any suitable method may be employed to prime the pump as is well known in the pump art.

The flexible member or hose (Fig'sJZ, 7, 8, and 9) comprises a flexible tube 2.1 of .rubber or any other suitable ilexiblematerial and a series of pivotally connected, preferably metal, links 28.

vOne of the most important aspects of my invention is the arrangement of the links to hold the flexible member or hose rigid in'one direction or in oneplane, whileperxnitting'it to flex substantially freely in that plane. The importance of thisarrangement in-mam'pulating tools over the bottom of a tank will later appear. The links may be applied-on the outside of' the hose, asillustrated in Fig. 2, or may be applied on the inside otthe'hose, as shown in Figs. 23 and-24. In the formof the invention shown in Figs. 2, 'A7, 8, and 9, the links are appled'on the Aoutside of the hose and are connected -together-by-pivot pins 29; Preferably the links extend substantially the full length of thefhosealthoug'hfas yillustrated in Fig. 27,-it is-sornetimes'desrableIto have 4only a short section of the hose or conduit flexible.

yAs shown in `Fig.'9, vthe pivot pins v29 extend through apertures formed in opposite sides of the hose. Mounted on each of the pivot pins on the inside of the hose is a bushing 32, preferably of somewhat shorter length than theinternaldiameterof the hose. The hose is drawn into oval form, as shown in Fig. 9, by applying nuts 33 to the ends of thepivot pins and drawing the nuts up tightly to squeeze the hose at the sides so that the inner side Walls of the hose tightly engage and seal against the ends of the bushing. By thus drawing the hoseagainst the bushing ya substantially air-tight pivot connection is formed so that a suction may be applied by the pump I8 without losing vacuum by leakage at the margins of thepivot pins. Moreover, I find it desirable in flushing the tank to sometimes use rather high pressure, perhaps as high as 100 pounds. The sealing of the plvotsiprevents the loss of pressure. After the nuts are drawn up tightly so that the hose is in somewhat the shape shown in Fig. 9, the ends ofr the pivot pins, as indicated at 34, may be upset or peaned so as to lock the threads of the pivot pins withthose of the nuts and hold the parts in the position shown.

The end of the hose is provided with a fitting 36 which may be secured to the end 'of the hose. Rigid links 30 are provided, 'each of which has one end secured to the last of the series of pivot pins. The tting 36, the rigid links 30, and the hose are secured together by nut and bolt `assemblies 31. The fitting 36 may be threaded, as shown at 35, for the reception of the too1 I'1. Any one of rvarious tools maybe secured tothe fitting. `In Fig. I have illustrated a too1 which may be used either to supply a fiushing liquid to thetank or may be used to draw or sucksludg'e, or sludge together with aflushing liquid, from the tank.

The tool I1 may be Agenerally cylindrical Ior any other suitable shape and may be provided with a threaded end, as shown at 38, for reception in the end of the fitting 36. The threaded end of .the too1 is provided with a bore 39 which opens into a. chamber 4I. The bottom of the tool is preferably provided with feet 42 adapted to hold the too1 just slightly oil the walls of the tank and permit the tool to be moved or slid over the walls. The chamber is provided' preferably with a bottom suction opening 43 normally closed-by a plate or valve 44. The plate 44 is held in closed position' against the margins ofthe bottom openling by springs 46. The springsmay be retained in position in any suitable manner,` as by elements 45 (Fig. 11) threaded into the walls of 4thetool and in the plate 44.

When a suction is applied through the hose the reducedpressure inthe chamber 4l causes the plate 44 to rise against the action of the springsso4 as to permit sludge or other refusezmalil ried by the tubular member52.

terial, together with liquid, to be drawn through the opening y43 into the chamber 4l and thence through the suction hose to the pump IB. The to'ol I1 mayalso be employed for the purpose of supplying a, flushing liquid to the tank. For this purposepreferably the forward end of the too1` is provided with a bored fitting 41 threaded into awall 46 of the chambrer'4l. The fitting'41 is provided with a flapper 'valve'49 which is pivotally mounted and is normally held in closed position by gravity. In addition, the valve 49 is held in 'closed yposition by the suction in the chamber 4I when the too1 is being used for withdrawing sludge from the tank. When, however, the apparatus is being used to supply a flushing liquid to the tank, the pressure of the liquid opens the valve v49 andpermits thedischarge of flushing material into the tank. The bored fitting thenserves as a nozzle through which the ushing liquid may be sprayed on the walls under pressure. The end or nose of the tool'is preferably rounded, as `indicated at 5I, for a purpose which will later appear.

The apparatus i6 for manipulating the exible member or hose so as to move the tool over the bottom and side walls of the tank is shown most clearly in Figs. 2, 3, and 4. This apparatus comprises a tubular member 52 of somewhat larger diameter than the hose so that the hose may be readily moved therethrough, as indicated in Fig. 2. The tube is provided at its lower end with an velongated longitudinally extending opening 53 V(Fig. 4), and has pivoted at its lower end, as at 54, a tubular guide member 56. The guide member has an opening or cut-away portion 51 which merges into the opening 53 when the parts are bent into the relationship shown in Fig. 2. The cut-away parts permit the hose to occupy a more smoothly curved position than the right angle position of the tubular member 52 with respect to the tubular guide member 56 shown in Fig. 2.

It will be appreciated that in inserting the tubular members 52 and 56 into the tank, the members pivot with respect to each other so as to move from the straight line position of the parts, shown in Fig. 3, tothe angular position of Fig. 2. When'ln their angular position the edges ofthe tubular members butt aginst each other v'at 6U so that they are substantially rigid with respect toeach other.

The tubular members-52 and 56 may be connected together-by a strap 6| riveted to the tubular guide member 56, as shown at 62, and pivoted to the tubular member 52 by a pivot pin 63. The pivot-pin63, in order to reinforce the pivot, may be tapered vand bent toward its ends, as shown in Fig. 6, and theend swaged against the sides of the tube as shown. An extension 64 of the tubular guide member 56, when the parts are in their straight line position, engages a stop pin 66 car- The extension 64 engages the stop pin 66 so as to pervent the parts-from swinging beyond their straight line position shown in Figs. Band 5.

In settingup the apparatus for use and before inserting the apparatus'in the tank opening, the

flexible member or hose, without the tool I1 applied thereto, is flrstthreaded through the tubular members or sections 52 and 56 which constitute the actuating apparatus for the hose and too1. 'With the hose in a position extended beyond the end of the tubular member 56, the

tool is applied tothe endv of the hose. The parts then occupy the straight line position shownin Fig. "3. With the parts inthis--positicn the-tubular members, together with the hose and tool carried thereby, are inserted in the inlet pipe` |3 vto the tank.

When the nose 5I of the tool engages the bottom of the tank, because of therounded shape of the nose, a force exerted on th'e protruding end of the apparatus causes the tool to be deflected so as to move along the bottomof the tank upon further feeding the tubular sections into the tank. The deection of the tool will cause thetubular guide section 56 to swing at 511v about the pivot pin 63. Upon continuing to advance the tubular sections within the tank the hose will tend to bend at a point opposite the pivotal point 54 of the sections and will allow the tubular guide section 56 to assume a position parallel to and adjacent the bottom of the tank, as shown in- Fig. 2.

With the parts in the approximate positivo-n shown in Fig. 2, the tubular section 52 is preferably lifted slightly so as to raise the lower end 1I of the tubular section 52 slightly abovethe bottom of the tank. The parts may be held in this position by applying a collar l2 Ion the tubular member 52 and tightening it in position by means of a set-screw 13, so that the collar rests on the top of the inlet pipe I3. The collar is then rigid with the tubular member 52 and forms a bearing on the protruding end of the inlet pipe `when the apparatus is operated, as will be presently described. A handle 14, shown more clearly in Fig. 4, is applied to the protruding end of the tubular member 52 for the purpose of swinging the tubular member 52 about a vertical axis. The handle 14 may be formed by two semi-circular portions 16 having handle extensions. The semicircular portions extend around the tubular member and are clamped to the tubular member by means of thumb-screws l1 or any other suitable means.

To facilitate movement of the hose through the supporting and guiding tubular sections 52 and 56, as shown in Fig. 2, small rollers 18 are mounted in position in the tubular member 52 preferably just above the top of the elongated opening 53. The rollers are supported by pins carried by the tubular member 52 and the rollers are in a position tov contact the hose as the hose is fed through the tubular members. The rollers not only facilitate feeding of the hose, but also prevent wear on the hose, as it will be appreciated that the hose by reason of the bending thereof tends to bear against the upper margins of the elongated opening 53.

Means are provided for protecting the exposed bent portions of the hose, lying oppositethe pivot point 54 of the tubular sections, when withdrawing the cleaning device from the tank. This means comprises a guard 'i9 which may be pivoted on the same pin which carries the lower of the two rollers i8. The guard may be of any suitable shape and overlies the bent portion of the hose, as shown in Fig. 2. If the apparatus were withdrawn from the tank without employing a guard, the bent portion of the hose would, in all probability, come in contact with the margins 8| ofthe tank opening and would, in the course of time, become damaged byrubbing at this point. However, in withdrawing the apparatus this is avoided by the guard which engages the margins 8l of the tank inlet opening. Upon engagement, the free end of the guard will be forced inwardly by the margins of the opening against the hose and serve to straighten out the same and swing the tubular guide member 56 about the pivot point 54 into alinement; with the tubular `member 52. Thus the guard serves, in withdrawing the apparatus from the tank, not only to straighten out the hose, but also to bring the tubular guide member 56 into alinement with the tubular member 52.

Preferably the apparatus, whether used for ilushing or sucking sludge and sediment from the tank, is positioned initially so that the tool lies only slightly beyond the end of the tubular guide member 56, as shown in Fig. 2. By means of the handle 15 the tubular member 52 is swung about a longitudinal or vertical axis with most of the weight of the tubular sections and a large proportion of the weight of the hose being carried by the collar 12 and the tank inlet pipe I3. The tubular guide member 56 is circular in cross section, resulting in a rounded portion at the forward end 82 of the bottom, so that it may readily move over the bottom of the tank when the tubular section 52 is swung about its longitudinal or vertical axis. The swinging of the tubular guide member 56 carries with it the hose and the tool I1 so as to sweep the tool over` the walls of the tank. It will be appreciated that the links 28 serve to hold the tool and the hose substantially rigidly in alinement with the tubular guide member' as the tool is moved over the tank wall.

rlhus the tool may be operated, when in operating position, as though the tool were rigidly connected to the tubular guide member 56. Should the tank be cylindrical or have walls which round upward from the bottom, as is usually the case, the tool may be swept up the side walls oi the tank and the feet of the tool will remain in contact with the tank wall. In moving the tool up the curved side walls, the links will pivot slightly on each other so as to permit some iiexing of the hose, but the tool and hose will still be retained in a plane common with a plane passing through the long axis of the tubular member. It is desirable that the tool be weighted sufficiently so that it will tend to flex the hose and not ride on its nose up the curved side walls of the tank.

After swinging or rotating the tool over the bottom of the tank so as to reach as much of the tank surface as can be reached from the initial position of the tool, the tool may be advanced by the inward feeding of the hose, a distance substantially equal to its length to another operating position. This distance is substantially equal to the length of two of the links 28, the combined length of which is preferably made slightly less than the effective cleaning length of the tool. In other words, the links constitute a measuring means by which the operator can readily determine how far to advance the tool after each swinging or rotating operation has been completed.

The operations are performed step by step until the tool has been advanced from one end of the tank to the other. There are, of course, certain areas of the tank which cannot be reached. However, since most of the sludge and sediment lodges against the bottom and lower portions of the side walls of the tank, the tank may be effectively cleaned. The point 82 of the tubular guide member 56 is preferably reinforced by welding a shoe onto the tube at this point as this is the bearing point which receives most of the wear. Moreover, it will be noted that the forward end of the Atubular guide member is cut away at 8U so that when the apparatus is removed from the tank, the hose or conduit may buckle slightly at the cut away portion 80. The slight'bu'ckling occurs by reason of the tool engaging the bottom of the tank. As soon as the parts are lifted sufficiently to raise the tool off the bottom of the tank the parts will properly line up.

In cleaning some tanks it may not be necessary, if the sludge is loose', to brush or scrape and flush the tank. However, in the large majority of casesit is desirable to flush the tank with a suitable liquid. For the purpose of flushing the tank I have found oil to be particularly effective. The oil tends to suspend the sludge or sediment in it so that when suction is applied on the tool, the sludge and sediment, together with the flushing oil, are effectively removed. It will be understood that in employing the apparatus to suck the flushingoil and sludge from the tank, it is desirable that the pump and suction hose be first primed. Moreover, in cleaning most tanks it is desirable, after the tank has been flushed, to brush or scrape the walls of the tank so as to loosen the scale, rust, sludge and sediment from the walls of the tank so as to permit this material to be suspended in oil or other flushing liquid. In addition at times it is desirable rstrto brush or scrape the tank; then effectively move the tool over the Walls of the tank in a step by step operation, as described above, while supplying a ushing'oil under pressure; then further brush and scrape the tank walls by the step by step operation above described; and then apply suction and remove the sludge and sediment together with the flushing liquid in the manner above described.

For the purpose of brushing and scraping the inner side walls ofthe tank the apparatus shown in Figs. 12 to 1'7 may be employed. The brush, generally indicated by the numeral 9|, cornprises a head 92 in which are mounted a multipliclty of heavy bristles 93 of preferably steel wire or other suitable material. The head may be weighted so that it will exert a pressure on the Walls of the tank. Moreover, to maintain the nose of the brush in a downward position the forward end of the brush, as at 94, may be heavily weighted with lead.

The brush'is carried by a pair of arms 96 located one on each side thereof which are connected by a pin 91. The pin lies ina bore 98 extending through the brush in which the pin is free to move. A coiled spring 99 having one end secured, as shown at |01, to one of the arms 96, and its other end secured to the brush, as shown at |02, serves to aid the weight 94 at the nose of the brush and swing the rearward end of the brush in an upward direction, as viewed in Fig. 12. A strap |il3 extends over the top of the brush and is4 connected to the arms 96 on opposite sides thereof and limits the upward movement of the rear end of the brush. The arms 96 are rigidly connected by means of pins |04 to the end of a flexible hose member which may be similar to that above described. However, I have found it preferable to employ a separate and somewhat different type of flexible member for use with the brush.

The modified form of flexible member may comprise a fiexible hose or tubular member |5 of rubber or other suitable material through which are extended pivot pins |06 for the reception of the ends of links |01. The links are similar to those described above, and serve to maintain the flexible member rigid in a direction perpendicular to the pins |09- while permitting the member to flex about the axes of the pins. Between the pins are inserted weights |08 which may be of lead or other suitable heavy material. Rigid links |09 may be connected to the last of the series of pivot pins |95.

A similar Weight may be provided in the forward end of the flexible member Which has bores for the reception of the pins |04. The pins |94 also extend through the rigid links and the arms, and the arms are therefore rigidly connected to the end of the flexible member. Thus the end of the flexible member is heavily Weighted so as to exert an appreciable pressure on the bristies of the brush so that the bristles may be effective to scrape and scrub scale, rust, and sludge from the bottom and side walls of the tank.

It will be understood that in assembling the structure the weights, pivot pins and links are successively assembled in the hose. After the last weight is applied, a cap ||2 may be placed on the end of the flexible member. The weighted exible hose is fed into the tank in the manner above described, and step by step moved over the bottom and side walls of the tank as previously described. The hose, in use, becomes worn usually more on one side than the other and by removing the pins |94 the hose may be reversed with respect to the brush.

In Figs. 23 and 24 I have shown a linkage means for maintaining the flexible hose rigidly in one plane while permitting fiexure thereof in that plane which linkage may be located on the inside of the flexible hose. Each of the links HB is circular in cross section at its central portion, and has its ends cut out at l|1 at each end so that, at each end thereof, the links taper toward points H8. The adjacent substantially pointed ends of adjacent links are connected together by pivot pins ||9 so as to provide a continuous linkage. In order'th'at the linkage shall have a substantially constant external diameter the ends of alternate links are bent inwardly slightly,as shown at |20.

The links may be forced through the inside of the hose longitudinally thereof and will permit flexure of the hose in the direction of a plane perpendicular to the axis of the pivots H9 while holding. the hose rigid against deformation or iiexure laterally out of such plane. The end of the hose may be connected to a tting by means of rivets |22, the fitting 36 being similar to that previously described and being for the purpose of receiving the tool l1 or any other desired tool. The primary advantage of placing the links on the inside of the hose is so that the external surface of the hose may be smooth and uninterrupted.

Particularly in the case of cellar tanks and especially when the tanks are employed in a gravity oil feed system to the burner, the head room is usually insufficient to permit the apparatus thus far described to be used. For such purposes I have developed the apparatus shown in Figs. 19 to 1" inclusive. While this structure is essentially the same as that previously described, the

tubular member, corresponding to the tubular member 52 of Fig. 2, is made up of built up separable sections. One of the sections has been shown in Fig. 2l, and is indicated by the numeral |26, while its complementary section has been shown in Fig. 22, and is indicated by the numeral |21. y

The section shown in Fig. 21 is circular in cross A section, and has at each end thereof a cut-out portion or notch |28. The complementary section |21 has its internal circumference cut away so as to provide a ledge |29 extending part way around the inner circumference of the section. Spaced inwardly from the ledge |29 is a ledge |3I, which also extends part way around the circumference of the inside of the section and on the opposite side of the section from that of the ledge |29. The other end of the section |21 is similarly formed with ledges |29 and |3I. The cut-out portions |28 in the section |26 and the ledges |29 and |3| in the section |21 are formed complementary to each other so that the end of the section |26 may be interfltted with the end of the section |21. Preferably the cutouts |28 and the ledges |29 and |3| each are substantially semi-circular.

It will be appreciated that the external diameter of the section |21 is larger than that of the section |26 so that the section |26 may telescope within the section 21. When the sections are assembled, as shown in Fig. 20, it will be appreciated that the cut-outs |28 form abutments |32 at each end thereof, while the ledges |29 and |3| form abutments |33 on the iner circumference of the sections |21. The engagement of the abutments |32 and |33 formed in the sections enables the assembled tube to be rotated by means of a handle |34 as though it were a continuous piece of tubing.

In this arangement a tubular guide member |36, similar to the tubular guide member 56 of Fig. 2, may be provided to which is pivotally secured, as shown .at |31, a short tubular section |38 which is similar to the lower portion of the tubular member 52 of Fig. 2. The hose is assembled with relation to these two tubular parts and lowered into the tank, as shown in Fig. 19. In this arrangement the tubular members are not supported on the tank opening by a collar similar to the colar 12, but instead the tubular guide section |36 lies on the bottom of the tank. The top of the tubular section |38 is provided with a cut-out notch at its upper end similar to the notch |28 in the tubular section |26, shown in Fig. 21. The notch thus formed is adapted to receive the lower end of a section similar to that shown in Fig. 22.

The separate sections |26 and |21, forming the operating tube for the tool |1 and flexible hose, may be assembled by supporting the tool |1, the tubular sections |36 and |31, and the hose adjacent the top of the tank while the tubular sections |26 and |21 are moved into position over the hose and interfltted with each other. As each section |26 or |21 is added the assembly may be lowered slightly. Thus the interfitting of the sections may be accomplished just above the inlet to the tank without a great deal of head room being required. In Fig. 19 I have illustrated what may be a cellar beam |39, to indicate the cramped space in which it is sometimes necessary to work in order to clean a tank.

In the apparatus shown in Fig. 19 I have employed a hose with the pivoted links on the inside of the hose. However, it will be understood th-at, ifdesired, the hose may be provided with links pivoted on the outside of the hose, as shown in Fig. 7, or may be provided with the links shown in Figs. 23 and 24. After the parts are assembled, as shown in Fig. 19, the apparatus is operated in substantially the same manner as above described. It will be appreciated that rotation of the handle |34 will, through the abutments |32 and |33 on the tubular sections |26 and |21,

swing the tubular guide section |36 so as to swing the tool over thebottom and side walls of the tank. It will further be appreciated that the apparatus shown in Fig. 19 may be employed to operate the brush, illustrated in Figs. 12 to 17, inclusive.

When head room will permit in cleaning a cellar tank, a tool and hose operating member, similar to that shown in Fig. 25 may be employed. This operating member comprises a tube |4I, to the lower end of which is pivotally secured a tubular guide member (Fig. 26) similar to the guide member |36. At its upper end the tube |4| is provided with a cut-out notch similar to the notch |28 (Fig. 21). The upper end of the tubular member |4| is interfitted with a tubular section |43 which has ledges similar to the ledges |29 and |3| and an abutment similar to the abutment |33 of the section |21, shown in Fig. 22. 'Ihe section |43 may be provided with a handle |42 for rotating the tube.

When it is necessary, because of the depth of the tank, to employ a longer operating member cr tube, an additional section |44 may be applied to the end of the tubular member |43, as shown in Fig. 26. The section |44 has at its lower end, as indicated in dotted lines, a cut-out |46 similar to the cut-out |28 provided in the section |26. The handle 42 in this arrangement is removed from the tubular section |43 and placed on the tubular section |44.

In Fig. 27 I have illustrated a simplified apparatus which may be employed in cleaning some types of tanks. The apparatus comprises a series of sections of tubing |46, which are assembled together by means of threaded couplings |41. To the lower of the sections |46 there is secured, as .indicated at |48, a section of hose |49. The hose or flexible member |49 may be provided with external links, as shown in Figs. 2 and 7, or with internal links, as shown in Figs. 23 and 24. The tool is operated by manually manipulating the protruding end of the apparatus so as to sweep the tool, indicated by the numeral |5|, over the bottom and portions of the side walls of the tank. The advantage of this arrangement lies primarily in the fact that the parts may be preassembled and work commenced when the job is reached merely by inserting the apparatus in the tank. However, if desired, the separate sections |46 may be assembled together, by means of the couplings, as the apparatus is lowered into the tank. It will be appreciated that the use of the apparatus of Fig. 27 requires sufficient head room to enable the apparatus to be inserted in the tank andthe protruding end to be rotated so as to sweep the tool over the tank walls. While a tool similar to that previously described, or a brush similar to that shown in Figs. 12, 13, and 16 may be employed with the apparatus shown in Fig. 27, I prefer to use with this apparatus a special tool. The tool is shown in Figs. 28 to 31, inclusive.

The tool |5| comprises a head |52 which has a threaded bore |53 for reception in a fitting I 54 ,on the end of the flexible member or hose |49.

The head |52 is preferably 'circular in cross section, as shown in Figs. 30 and 31, and has cut therein an elongated opening |56 which terminates just short of the ends of the head so as to provide feet |51. Opposite the elongated opening |56 and threaded into the wall of the head, as indicated at |58, are a pair of supporting pins |59. The pins |59 are provided with enlarged heads |6| which may be provided with suitable means, such as screw driver slots, for removing the pins from the head or adjusting the position of the pins.

Carried by the pins are members |53 and |64, shown most clearly in Fig. 29. The member |64 is a scraper bar and is provided with rather sharp scraping edges |65 extending longitudinally of the member. Member |64 is provided with a pair of enlarged bores |61, would decrease in diameter so as to form ledges |68 adapted to receive the heads |5| of the pins |59. The member |63 is provided with a pair of bores |69 for the reception of the pins. The diameter of the bores is such that the members |63 and |64 are loosely supported by and may shift with respect to the pins. The member |63, in particular, is a heavy element and may be made of lea-d and exerts its weight upon the scraper bar |64. It will be appreciated that the element |63 is supported by the element |64 and is free to shift with respect thereto, while the element |64 is supported by the pins so that it protrudes through the elongated opening |55 so that the longitudinal edges |55 thereofl may scrape upon the bottom and side Walls of the tank.

The tool |5| is a combined flushing, scraping and suction tool. When the tool |5| is moved over the walls of the tank, with suction applied through the hose |49, it will be appreciated that the resistance to movement offered by the tank wallwhen the tool is moving to the left, as viewed in Fig. 31 and as indicated by the arrow A, will cause the scraper bar to shift to the right with respect to the head and the sludge and sediment to accumulate or pile up adjacent the point |75 and in front of the scraper bar edge. The suction in the chamber formed in the head |52 will draw the sludge and sediment, together with the flushing oil, from the tank upwardly into the hea-:l and thence into the hose |49, so that it may be discharged by the suction pump. When the direction of movement is reversed, from that indicated by the arrow A, the scraper will remain stationary until the lost motion is taken up, after which the scraper bar edge |66 at the right of Fig. 31 will be effective to scrape material from the bottom of the tank. A space will then exist along this scraper bar edge through which the suction is effective to draw the refuse material into the head. It will be appreciated that the members |53 and |54 are floating on the pins and that the weight of the bar |53 is such as to maintain the scraping edges in scraping position on the bottom of the tank.

In Fig. 18 I have illustrated a modined form of flushing and suction tool, generally indicated by the numeral |8|. This tool is particularly designed for light liquids such as gasoline. The tool is provided with a bore |82 which opens into a chamber |63. The chamber is of maximum. cross sectional area adjacent the bore |82, as indicated at |84, and gradually decreases in cross sectional area towards its forward end, as shown at |85. The suction opening |66 is maintained slightly above the bottom of the tank by feet |31. The forward end of the tool may be provided with a nose |88 shaped so as to permit the tool to be deflected when lowered into the tank upon striking the bottom thereof. The tool, if desired, may

be weighted with lead to maintain it in contact e with the tank wall. The arrangement shown, wherein the cross sectional area of the chamber |83 gradually decreases toward the forward end of the tool, causes a substantially equal suction to be, effective throughout the area of the suction opening |86. The tool is thus more effective to pick up light fluids such as gasoline.

While I have shown various tools which may be employed in cleaning a tank and have shown various ways in which a flexible member or hose can be made, and also have shown various arrange'- ments for actuating the tool and the flexible member or hose, it will be appreciated that Various other arrangements may be employed, and that, in particular, changes may be made in the form and relation of parts. It is desirable in a complete system fo-r cleaning tanks that most of the equipment described above and shown in the drawings be available, as various sizes and shapes of tanks are encountered, and also the tanks are differently mounted and the openings therein differently located. With the equipment shown and described the proper tool will be available for cleaning substantially any tank which may be encountered. It is intended that the claims shall embrace not only the apparatus and Various arrangements of the equipment shown herein, but equivalents thereof, such as are withinthe spirit of the invention.

I claim:

l. Apparatus for cleaning a tank through an opening in a wall thereof, comprising a flexible member having a free end section adapted for insertion through said opening and for movement downwardly within the tank to the bottom wall thereof and with at least a portion thereof lying a distance along said bottom, means associated with said section and serving to stiften it in one plane to restrain flexing thereof in said plane while permitting substantially free flexure of said section in a plane at right angles to said first mentioned plane, and means associated with said section within the tank for operating said section to swing the bottom portion thereof over the tank walls.

2. Apparatus for cleaning a tank through an opening in a wall thereof, comprising a flexible member having a free end section adapted for insertion through said opening and for movement downwardly within the tank to the bottom wall thereof and with at least a portion thereof lyinga distance along said bottom, means associated with said section and serving to stilen it in one plane to restrain flexing thereof in said plane while permitting substantially free fiexure of said section in a plane at right angles to said first mentioned plane, and supporting and guiding means for said section extending within the tank through said opening, said flexible member being movable on said supporting and guiding means to progressively advance the free end of said section along the tank wall to predetermined positions thereon, and said supporting and guiding means engaging said free end section and being operable to swing it laterally over the tank wall.

3. Apparatus for cleaning a tank through an opening in a wall thereof, comprising a nexible hose having a free end section adapted for insertion through said opening and for movement downwardly within the tank to the bottom thereof and with at least a portion thereof lying for a distance along said bottom, means associated with said` section of the hose and serving to stiifen it in one plane to restrain flexing thereof in said plane while permitting free flexure of said section in a plane at right angles to said first mentioned plane, said means comprising a series of pivotally connected links extending along two sides of the hose, and means associated with said section within the tank for operating said section to swing the horizontal portion thereof over the tank walls.

4. Apparatus for cleaning a tank through a relatively small opening near the top thereof, said apparatus comprising a flexible hose having one end section adapted for insertion through said opening into the tank to extend downwardly to the bottom thereof and thence to extend approximately horizontally for a distance along said bottom, means associated with said section of said hose and extending lengthwise thereof for stiiening said section to tend to restrain flexure thereof out of an approximately vertical plane defined by the downwardly extending and horizontally extending parts of said hose section while permitting substantially free flexure thereof within said plane, and means insortable into said tank through said opening for swinging said horizontally extending part of said hose laterally approximately around the axis of said downwardly extending part thereof.

5. Apparatus for cleaning a tank through a relatively small opening near the top thereof, said apparatus comprising an elongated relatively stiff member for insertion downwardl; ioto said tank through said opening, a second relatively stiff member pivotally connected to said rst mentioned member near the bottom end thereof so that said second member may be placed in approximate alineinent with said first member for insertion into said tank and may be swung laterally after insertion to a position at a substantial angle to said first member, and a hose guided by and movable longitudinally with respect to both of said members, said hose flexing when said second member is swung laterally with respect to said first member and the end of said hose being progressively advanced along the bottom of the tank farther and farther from said second member when force is applied to an accessible portion of the hose above the tank to move it downwardly with respect to said first member, rotation of said rst member about its longitudinal axis being effective to swing said second member and thereby to cause lateral movement of the advance end of the hose to various portions of the tank.

6. In apparatus of the class described, a device for cleaning a liquid supply tank and adapted for insertion through an opening in a wall thereof, said device comprising a flexible member having a head, and supporting sections for the flexible member extending longitudinally thereof and connected to swing one upon another, said device during advancement within the tank having a portion acted upon by a wall of the tank to bend the flexible member and to Swing one of the sections upon another to enable movement of the head to a predetermined position within the tank, the nexible member being' movable upon the sections to progressively advance the head along the bottom of the tank to other predetermined positions, and the sections being operable to move the head over the tank walls from said predetermined positions.

7 In apparatus of the class described, a device for cleaning a liquid supply tank and adapted for insertion through an opening in a wall thereof, said device comprising a flexible hose having a head and supporting sections for the hose extending longitudinally thereof and connected to swing one upon another, said device during advancement within the tank having a portion acted upon by a wall of the tank to bend the hose and to swing one of the sections upon another to effect movement of the head to a predetermined posi- Cil tion within the tank, and means on the hose serving to restrain flexing thereof in a plane transverse to the plane in which it is bent, the hose being adapted for a step by step movement on said sections to successively advance the head from said predetermined position to other predetermined positions, said sections being rotatable to move the suction head from said predetermined positions over the tank walls.

8. In apparatus of the class described, a device for withdrawing sludge from a liquid supply tank and adapted for insertion through an opening in a wall thereof, said device comprising a exible hose having a suction head, normally alined supporting sections for the hose extending longitudinally thereof and connected to swing one upon another, means operable from the exterior of the tank during advancement of said device therein to swing one of the Sections within the tank to a position at a substantial angle to another to effect movement of the suction head to a predetermined position on the bottom of the tank, the hose being movable upon the sections to progressively advance the suction head to other predetermined positions on the bottom of the tank and the sections being operable to move the suction head over the tank walls from said predetermined positions.

9. Apparatus for cleaning a tank through an opening in a wall thereof, comprising a flexible suction hose having a free end section adapted for insertion through said opening and for movement downwardly within the tank toward the bottom thereof, means including a member operable from the exterior of the tank for bending said free end section to position it substantially horizontally over said bottom, means associated with said section of the hose and serving to stiften it in a plane transverse to the plane in which it is bent, and means associated with said section within the tank for operating said section to swing the horizontal portion thereof over the tank walls.

10. In tank cleaning apparatus, a flexible suction hose having a liquid inlet opening at its free end, inner and outer tubular supporting sections for the hose extending longitudinally thereof and pivotally connected one with another and through which the free end of the hose is extended, said hose and the sections thereon being insertable within a liquid holding tank through an opening in the wall thereof to a predetermined position at which the outer tubular section will extend in angular relation to the inner section and over the bottom of the tank, said hose supportin sections being rotatable within the tank to move the suction end of the hose over the bottom surface thereof, said sections each being cut away at one side thereof adjacent its point of conn ection with the other section to permit the hose to bend opposite said point during movement of the sections and the hose to said predetermined position within the tank, and a guard connected with said inner section and adapted to engage the bent portion of the hose when the sections are at said predetermined position, said guard engaging a portion of the tank surrounding said opening during withdrawal cf the sections from the tank to prevent the bent portion of the hose from contacting with said tank when being retracted through said opening.

11. Apparatus for cleaning a tank through an opening in a wall thereof, comprising a tube for rotation within said opening, a flexible member having a free end section movable longitudinalLv through the tube into the tank to a position at which it will project laterally from the tube and over the bottom of the tank, and means effective upon rotation of the tube to swing the free end section of the hose over the tank walls.

12. Apparatus for cleaning a tank through an opening in a wall thereof, comprising a flexible member having a free end section adapted for insertion through said opening and for movement downwardly within the tank to the bottom thereof and substantially horizontally for a distance on said bottom, and supporting and guidingr means for said section extending within the tank through said opening, said flexible member being movable on'said supporting and guiding means to progressively advance the free end of said section along the bottom of the tank to predetermined positions thereon and said supporting and guiding means engaging the flexible member and being operable to swing the horizontal portion of the section from said lpredetermined positions over the tank'walls.

13. In apparatus for cleaning a tank having an opening, in combination, a flexible suction conduit having a free end adapted for insertion through said openingpmeans on the outer end of the conduit for producing a suction in the conduit for drawing waste material from the tank, and means associated with the conduit for stiffening it against deflection out of one plane while permitting substantially free flexure thereof in said plane.

14. In apparatus for cleaninga tank having an opening, in combination, a flexible suction conduit having a free end adapted for insertion through said opening to extend downwardly within the tank to the bottom thereof andl substantially horizontally Afor a distance along said bottom, means in connection with said conduit for deflecting the conduit and causing the free end to be projected horizontally as the conduit is fed into the tank, means associated with the conduit for stlflening it against deflection out of one plane while permitting free flexure thereof in said plane, and means on the outer end of the conduit for producing a suction in the conduit for drawing waste material from the tank.

15. In apparatus for cleaning a tank through a relatively small opening adjacent the top thereof, in combination, a flexible conduit having a free end adapted for insertion through said opening to extend downwardly to substantially the bottom of the tank and thence to extend at an angle to the direction of insertion along the bottom thereof, a pair of rigid elements connected together at an angle to each other and associated with the conduit, said elements extending longitudinally of the conduit and with respect to which the conduit is longitudinally movable, means externally of the tank for swinging said elements to thereby swing the conduit, and means extending longitudinally of the conduit for retaining at least the portion of the-conduit adjacent the free end rigid in planes approximately parallel to the bottom of the tank so that the free end of the conduit may be swung across the bottom of the tank upon swinging said elements.

16. In a structure of the character described a conduit of flexible material, a plurality of members extending lengthwise of the conduit, and elements extending through the conduit to the external ends of which said members are pvotally connected, said members and elements cooperating to stillen the conduit against deflection out of one plane while permitting it to flex substantially freely in said plane.

17. In a structure 0f the character described a conduit of flexible material, a plurality of members extending lengthwise of the conduit, elements extending through the conduit to the external ends of which said members are pivotally connected, said members and elements cooperating to stiffen the conduit against deflection out of one plane while permitting it to flex substantially freely in said plane, and means for sealing the conduit at the points where said elements extend through the conduit.

18. In a structure of the character described a conduit of flexible material, a plurality of members extending lengthwise of and being located withinthev conduit, and means for pvotally connecting said members, said members stiftening the conduit against deflection out of one plane while permitting it to flex substantially freely in said plane by pivotal movement of said members with respect to each other.

19. A tool for use with an apparatus of the character described, said tool comprising an elongated body, a multiplicity of scrubbing elements carried by said body, an elongated member pivotally connected adjacent one end to said elongated body and having sufficient lateral stiffness to serve as a handle for manipulating said body' laterally over a surface to be cleaned, the pivotal connection between said body and said member being so arranged that said body may be approximately alined with said member and form a prolongation thereof, the cross sectional outline of said body when' in said alined position being not substantially larger than the cross sectional outline of said handle member, and means including 'a spring tending to return said body to said alined position when it is displaced therefrom.

20. A tool for use with an apparatus for cleaning tanks of the character described, said tool comprising a body section having an opening therein, a scraper bar mounted on said body section and projecting through said opening, said bar being non-rigidly mounted with respect to said body section for lateral movement within the limits of said opening and being narrower than the width of the opening so that whenever said bar is moved to a position substantially against one side of said opening an open inlet space will remain adjacent the other side of said opening, whereby upon moving said tool laterally over a sludge-covered surface, said bar will occupy a position substantially against the trailingr side of said opening and the sludge will be scraped by said bar and accumulate in front of said bar to be drawn into said body section through the open inlet space adjacent the leading side of said opening.

21. In a structure of the character described, an elongated flexible member, a tool adapted to be moved over the walls of a tank and connected to one end of said flexible member to be actuated thereby, the end portion of said flexible member adjacent said tool being weighted to tend to press the tool into firm engagement with the tank wall, and means for maintaining said flexible member substantially rigid against lateral deformation out of one plane while permitting it to flex in said plane.

22. In an apparatus for cleaning tanks having an opening therein, a flexible conduit, a plurality of tubular members with respect to which said flexible conduit is movable, said tubular members having complementary lnterntting parts; to. enabler the conduit to be extended through thetank opening and the tubular members interi'ltted in surrounding. relation to the conduites the conduit is fed. into. the tank, and: means in connection with the. tubular members for actuating the conduit from the outside of the tank through said tubular membersafter' the tubular members are assembled.

23. A flexible member for insertion intoa tank through a relatively small opening therein, to operate a cleaning member within said tank, said flexible member including a flexible element, rigid linksv extending lengthwise of said element in closely associated relation with two exteriorly opposite sides onlyf of said'. element and pivotally connected' for oscillation relatively to; eachother about axes which are all substantially parallel to each other sor that said links-.and said.A flexible element may flex within a plane perpendicular to said pivotal axesk and are held against' substantial deilection laterally out` of saidl plane, the other sides oi" said iiexible member which form the inner and outer surfaces of a curve when said member isfiexedfpresenting. relatively smoothv and unbroken surfaces in'y a: longitudinal direction sothat the flexible member may be readily withdrawn from said tank through saldi small opening, and meansv tot attaching a. cleaning tool to one end of said flexible.A member for'v actuation thereby.

24. A tank-cleaning tool for insertion into a tank through a relatively small opening'therein, said tool' including` an elongated handle portion, an elongated working head' pivotallysecured to said; handle portion for oscillation about a pivotal axis substantially perpendicular tothe directions of elongation of both said handle. portion and said' working head1, so that said workmg head mayr swing about said axis to. various angular posi"-l tions relative to said handle portion, said axisbeing located substantially at the extremity o! said handle portion, and means for swinging said head about said axis to aline it with said handle portion, said head and said handle portion when alined with each other both having relatively small cross: sectional outlines so that said handle portiony and said head may be readily withdrawn from said tank through said small opening.

25. A construction as described in claim 24,111 which said means for swinging said head comprises a. spring constantly tending to turn said head relatively to said handle portion in one diy rection, and abutment means limiting the swing.-

ment and extending lengthwise thereof, said linksv being pivotally connected for oscillationV relative to each other about axes which are all substantially parallel to each other so that said links and said element may' ilex Within a plane perpendicular toY said pivotal axes and are held against substantial deilection laterally out of said' plane, the exterior sides of said element which form the inner and outer surfaces of a curve when said element is flexed presenting relatively smooth and.' unbroken surfaces in a, longitudinal direction so that said member may be readily withdrawn from said tank through said small opening, and means for attaching a cleaning; tool to one end of said member for actuation thereby.

CHARLES E. SENKE.

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