US2424681A - Sleeve puller - Google Patents

Description

July 29, 19471. c. EBERHART SLEEVE FULLER Filed Nov. 8, 1944 2 Sheets-Sheet 1 Inventor C/em FZe/"ari.

y 29, 1947- c. EBERHART 2,424,681

' SLEEVE FULLER Filed Nov. 8, 1944 2 Sheets-Sheet 2 Inventor Patented July 29, 1947 UNITED STATES FATENT OFFICE SLEEVE .PULLER Clem 'Eberhart, Goshen, Ind.

Application November 8, 1944, Serial No. 562,481

.2 Claims. (01. 29-263) This invention relates to a novel and improved sleeve puller "which is expressly adapted for use in dislodging, and withdrawing lining sleeves such as are employed in engine blocks, for example on V8 Ford cars, whereby to permit replacement with a new sleeve.

Briefly, the .preferred embodiment of the invention is characterized by what may be referred to as a lifting screw jack, this provided with a suitable adapter cylinder which functions as an upstanding support on the cylinder block, and special foot-equipped means mounted on and coacting with a lift screw and expressly made for proper association and coordination with the standard sleeve.

In carrying out the principles of the invention, I have evolved and produced a feasible and practicablesleevepuller which is advantageous in that it may be operated by one man, without requiring him to get under the car.

.Of particular importance is the lift screw supporting cylinder which is mounted .On the cylinder block and which serves to permit the sleeveclamping and withdrawing means to telescope into it, this .part being so designed that it will dispose itself, when in use,'to clear the fenders and adjacent parts, thus making it especially adaptable for the V-type engine block.

Another object is the provision of a structural arrangement which accomplishes its pulling and sleeve ejecting results direct from the motor block instead of the crank shaft, thereby relieving the latter of needless damaging strain.

Other features and advantages willbecome more readily apparent from the following description and the accompanying illustrative drawings.

In the drawings, wherein like numerals are employed to designate like parts throughout the same:

Figure 1 is a sectional View, partly in elevation, showing a portion of the cylinder block, the sleeve in the cylinder, and the improved jack-type sleeve puller constructed in accordance with this inven-- tion.

Figure 2 is a bottom plan View.

Figure 3 is a top plan view.

Figure 4 is a transverse or horizontal section on the plane of the line 4--4 of Figure 1.

Figure 5 is an elevational view of the foot accommodation, reach and lift barrel.

Figure 6 is a fragmentary sectional and elevational view emphasizing the manner in which the ledge portions of the pressure foot engage the lower end of the sleeve.

Figure 7 is a horizontal section on the plane '2 of the-line 7-47 of Figure .1, looking in the directionof the arrows.

Figure 8 is an edge or marginal elevational view .of the jackfcentralizing and cylinder sleeve bracinsp.

Figure 9 is a top plan View of the barrel seen in Figure .5.

with a capping plug I 2 which is centrally recessed as at :i 3, this to accommodate end-thrust bearing means [4 which accommodates the flanged and headed end it of [the jack or lifting screw IS. The ilatter depends central-1y down through t e cylind andext ndsbeycndthe lower end there- :of, Where-it1iszthread diinto the pp r nd of a concen ric l0 1gitudinal lifting barrel Ill. This barrel is of the construction seen in Figure 5, having an upper externally screw-threaded end 18 :and .a key-way I19. The lower end is provided with oppositely ibeyelled clearance shoulders lit and 2|. On diametrically opposite sides :1 provide suitably angled notches 22 having keeperseats 23 as shown. The upper end is also internally screw-threaded to accommodate the screw I 6 as seen in Figure 1. This upper end extends up through an opening in the central portion of the stabilizing and stress equalizing cup 24. The cup is flanged and fits down into the upper end of the sleeve to serve as a stabilizer and also functions to receive the assembling and clamping nut 25. A projection on the cup fits into the groove I 9 to form a locking key connection between the cup and barrel. It follows that all of these parts therefore, lift up as a unit when the feed or lift screw I6 is rotated in the proper direction.

The aforementioned dislodging and pressure applying foot is denoted by the numeral 26 and this is provided in its bottom with outstanding segmental lips 21 which correspond in outer perimeter diameter with the sleeve and also function as lifting ledges on which the sleeve B rests. It is to be noted also that the foot is provided with diametrically opposite upstanding V-shaped lugs 28 located on opposite sides of the barrel and having projections forming journal pins 29 fitting into the inclined slots 22. Thus, a sort of bayonet-slot and pin assembly is provided to allow the foot to cam or tilt to either side of the barrel, as permitted by the clearance bevels 20 and 2 I. If desired, the trunnions or jourals may be hollow to accommodate spring-pressed balls 38 pressed into the sockets or keeper seats 23 (see Figure 1) In practice the trunnions 29 which suspend the force and pressure applying foot 26 coact with the inclined grooves 22. Moreover, the clearance between the foot and barrel allows the foot to assume the desired tilted angle in either direction in respect to the longitudinal axis of the barrel to permit application and withdrawal of the foot and also to permit the foot to swing and tilt during the insertion step.

It follows therefore that in bringing the device into use, the foot equipped end of the barrel i1 is inserted down through the sleeve B, at which time said foot 26 takes a canted or self-accommodating angle. This permits it to feed down to a point below the bottom end of the sleeve B. Then, it becomes self-levelling and automatically straightens out and positions itself to engage the end of the sleeve, when it is again brought up in a true horizontal plane.

Turning of the feed and lifting screw 16 in the jointing connection between it and the barrel serves to elevate the foot 26 and to dislodge the sleeve and to pull it up out of the engine block. The thus elevated structure telescopes and recedes into the feed screw supporting cylinder, the latter being sufficiently proportioned to take care of complete withdrawal of said sleeve.

It is possible also to attach and apply the pressure foot 26 from beneath by projecting the barrel I! sufiiciently below the sleeve B to permit such application. That is to say, the foot is hung and suspended in the notches 22 and the barrel is lifted again and said foot is brought up into lifting position against the sleeve.

It is thought that .persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.

Minor changes in the shape, size and arrangement of details coming within the field of invention claimed may be resorted to in actual practice, if desired.

I claim:

1. In a sleeve puller for a cylinder block, a cup adapted to fit telescopically in the upper end of the sleeve, a barrel attached to and depending centrally from said cup, a sleeve engaging pressure foot mounted on the lower end of said barrel and internal screw threads at the upper end of the barrel, a feed screw operatively engaging the threads in the upper end of said barrel, and a vertically elongated cylinder constituting a support for the feed screw, said cylinder being adapted to rest on the block and also being adapted to telescopically receive the cup and sleeve.

2. In a sleeve puller for a cylinder block, a cup adapted to fit telescopically in the upper end of the sleeve, a barrel depending centrally from said cup, a sleeve engaging pressure foot mounted on the lower end of said barrel and internal and external screw threads at the upper end of the barrel, a nut on said external screw threads for causing relative movement between said cup and said pressure foot to clamp the sleeve therebetween, a feed screw operatively engaging said internal screw threads in the upper end of said barrel, and a vertically elongated cylinder constituting a support for the feed screw, said cylinder being adapted to rest on the block and also being adapted to telescopically receive the cup and sleeve.

CLEM EBERHART.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,429,567 Carlisle Sept. 19, 1922 1,538,306 Stewart May 19, 1925 983,409 Sorensen Feb. 7, 1911 1,569,614 Clark Jan, 12, 1926 2,257,318 Wilborn Sept. 30, 1941 2,282,629 White et a1 May 12, 1942 2,341,677 Wass Feb. 15, 1944 2,234,824 Kingston Mar. 11, 1941 FOREIGN PATENTS Number Country Date 494,711 Great Britain Oct. 31, 1938

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