US2495649A

US2495649A - Device for removing or inserting sleeves

Info

Publication number: US2495649A
Application number: US734319A
Authority: US
Inventors: Frank C Wilson
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-03-13
Filing date: 1947-03-13
Publication date: 1950-01-24
Anticipated expiration: 1967-01-24

Description

Jan, 4, 195@ F. c. WILSON DEVICE FOR REMOVING OR INSERTING SLEEVES 3 Sheets-Sheet 1 Filed March 13, 1947 INVENTOR. 44? (7 Zflzzs'oiz BY Qz Eormj.

Jan, 24, 19510 F. c. WILSON DEVICE FOR REMOVING OR INSERTING SLEEVES s Sheets-Sheet 2 Filed March 13, 1947 [N V EN T OR. @0721? zflz'is'ozz Jan. 24, 19% F. c. WILSON DEVICE FOR REMOVING OR INSERTING SLEEVES 3 Shets-Sheet 3 f v NW...

3 m "II/I) Filed March 15, 1947 INVENTOR fie/7% C 501K802 BY Z atented Jan- 24, 1950 2,495,649

DEVICE FOR REMOVING OR IN SERTIN G SLEEVES Frank i). Wilson, Arcade, N. Y. Application March 13, 1947, Serial No. 734,319 4 Claims. (Cl. 29-283) This invention relates to a device for removing arrows, and showing the adjustable upper shoulor inserting sleeves of internal combustion engine der means. cylinders and consists of a sleeve supporting and Figure 7 is a fragmentary view in plan and secengaging jig operable by movement in one direction of the parts shown in Figure 6, with the tion to remove a sleeve and by movement in the shoulder members shown in an alternate position. opposite direction to insert one. Figure 8 is a section on the line 3 8 of Figure The device is utilized with an arbor press of 4, looking in the direction of the arrows, illussuitable or known form which suppoi ts tne cylintrating the connection between the device and the der block. It is moved by the ram element of the ram element of the press. press axially of a cylinder of the block, its move- Figure 9 is a section on the line 99 of Figment in one direction efiecting the removal of ure 6.

the sleeve and its movement in the opposite di- Figure 10 is a view, partly in elevation and iection effecting the insertion of a sleeve In partly in section, of the device in operative assothese operations the device also acts with cenciation with a sleeve to be removed or inserted rors of misalinement and enabling the work piece vertical frame posts I2, overhead beams l3, and

to be set up quickly in the press. a deck including transverse beams l4, these parts The device includes a cylindrical member havbeing assembled and related in the usual manner. ing a bore at one end to enable its mounting on The press also includes a vertically mounted and a press ram element and a conical head at its moveable ram element l5, an associated piston opposite or free end which head as it enters Mia and acylinder I6, these elements being shown the cylinder, effects such sniftin of the work in connectmn with other elements required fol piece as may be requu ed accurately to ahne the their Ope a 6 g a p mp I! operated y a cylinder with the device. The sleeve to be re motor [8, a valve control lever I 9 and pipes 2! moved or inserted has a position on the device nd 22 w n h pump and cylinder. The deor insertion, is insured with resultant elimination nation at opposite sides of the ram piston PM, of binding action and liability of its distortion thereby to cause the ram element 15 to move and also a minimum power requirement. toward or away from the deck. Control of this In the accompanying drawings: action is manually governed by the position of Figure 1 is an elevation, with parts in section the lever i9 which, in turn, operates the valves showing a standard arbor press in operativeiy as (not shown), all in accordance with well-known sociated relation with the device of the inven design and practice. tion and with a cylinder block of V-type of inter- The deck includes a support block 23 secured nal combustion engine. to and mounted between the beams I4 and hav- Figure la is a section on the iine fizz-54: of me a central vertical opening 24 through which Figure Lshowing the mounting of the press clamp so the ram element I5 is moveable- The block 3 screw. preferably carries spaced upright deck rails 25 Figure 2 is a view on the line 2-2 of Figure 1, which serve as the immediate support for the work looking in the direction of the arrows, the device piece 26. This piece is shown in Figures 1 and 2 of the invention being shown as having entered as the cylinder block of the well-known \/-!3 a cylinder of the block. s design of internal combustion engine character- Figure 3 is a View similar to Figure 2 but showized by two lines of four cylinder bores 2'5, the ing another form of cylinder block and the device bores of one line being set axially at an angle of in retracted position. 90 to the bores of the other line. The cylinder Figure 4 is an enlarged axial section of the bores in this and other internal combustion endevice in association with the ram element of the gine designs are equipped with sleeves 28, press D fitted into place and which, due to wear in service, Figure 5 is a section on the line 55 of Figure must from time to time be withdrawn and re- 4, looking in the direction of the arrows. placed. For this purpose the cylinder bores 2? Figure 6 is an enlarged section on the line of the block (work piece) are successively alined E-i of Figure 4, looking in the direction of the with the ram element i5 whereby the device, carried by and projecting axially beyond the ram element, may enter a bore, either to remove or insert the sleeve 28 with respect to the several cylinders.

The construction of the device is such that it is not required that the work piece as originally placed upon the deck be in strict co-axial alinement with the ram element. A sufficient approximation may be made by means of an index bar 29 having an index mark 3! and which is posi tioned on a side of the block 25 so that the mark 3| may be alined successively with gage marks 32 on one of the supporting rails 25, the alinement of the mark 31 successively with each of the marks 32 indicating the sufficient approximation of the alinement of the successive cylinders of the block with the ram cylinder; Thus, as the cylinder block is shifted along the rails 25, thereby to bring another cylinder into operative relation to the device, the alinement of the index mark 3! with the next succeeding gage mark 32 on the supporting rail 25 will indicate that the cylinder (from which a sleeve is to be removed or into which a new sleeve is to be inserted) will have been brought into the sufficient approximate alinement with the ram cylinder 15.

Figure 3 shows a four cylinder engine block 35 mounted on the press. In this case, instead of the index bar 29, apointer 35 may be used, this pointer being so positioned at one end of the block that it can register with the gage marks 32. The effect is the same in both instances; and ob viously the rails 25 may be provided with a num' ber of series of gage marks, e. g.', the additional series 32a and 321), as shown, in order that it may conform to engines of different models and makes.

The cylinder block, as set in proper position on the supporting rails 25 in the manner above described, may be held by a clamping screw 38, having at its inner end a contact pad 53 for light engagement with a dummy shaft 39, temporarily fitted in the main bearing recesses M. The dummy 39 is convenient but may, of course, be dispensed with in certain cases. "It' is a simple expedient for assuring that the pressurerequired for the removal or insertion of the sleeve will, in all cases, be properly applied. The adjustment of the screw 38 is-eifected' by a capstan wheel 43 pinned to a nut 52 (Figure 1a.) rotatably mounted in a fixed block 45 interposed between and supported by the beams 13. The block 45 carries at its lower side a recessed holding plate 56 secured by screws 31. The nut M is provided at its lower end with an annular circumscribing shoulder 48 located between the plate 36 andblock 45 and grooved on both fiat faces to provide races for ball'bearings A9. The screw 38 is held against rotation by a pin convenientlycarried by the holdingplate 46, which engages in alongitudinal keyway in the surface of the screw.

The ram element carries, and operatively moves, the device 54 (jig) which embodies the invention and is constructed to hold a sleeve 23 to be removed or insertedl- Figure 1 assumes the ram element as pressing home a replacement sleeve; and Figure 3 assumes the ram element as having effected the removal of a worn'sleeve.

As shown in Figures 4 and 10 the jig comprises a generally cylindrical body member 55 having enlarged ends by and between which a sleeve 28 may be held. The member 55 is formed with a recess 51 extending axially from its bottom or inner face whereby it may be fitted securely, but removably, upon a reduced section 56 at the upthe ram element 15. A detachable connection of any suitable construction is provided between the ram element member 55, a standard type of bayonet joint being shown.

For this purpose the lower portion of the member is counterbored to provide an annular recess 58 extending beyond the bore 51, the lower wall of this recess providing a shoulder 58a which is interrupted by diametrically opposed slots 59 extending to the bottom or inner face of the member 55. The reduced section 55 carries a diametrically arranged pin 6! having projecting end por- Hence, when the member 55 is positioned upon the section 55 with the pin ends in registry with the slots 59, the member may be pressed down as shown in Figure 4. Rotation of the cylinder 56 then brings the pin ends against the bottom wall of the internal shoulder 58 to prevent displacement of the parts. A stop pin 62, fitted in the lower portion of the member 55 ad jacent one of the slots 59, and extending through the recess 58, prevents the turning of the member 55 beyond a proper distance.

The lower end of the member 55 is formed with a conical portion 54 merging into a right cylinder section 55, the lower end of which is defined by an annular shoulder contiguous with a knurled lower section 51. As shown in Figure 10 the shoulder 56 provides a seat for the lower rim, or engine head end, of a sleeve 28 which is shown as having at its lower rim a circumscribing annular flange 68 in accordance with a cylinder sleeve design that is frequently used. The diameter of the right section 55 is such that it fits closely within the sleeve 28, thereby to maintain the sleeve concentric with the axis of the ram 15. The knurled section 61 facilitates the removal or positioning of the jig on the end of the ram ele ment, through the bayonet joint above described.

The upper or head end of the member 55 is also formed with a conical section 1| merging into a right cylinder section 12 of the same diameter as the section 65. The sleeve 28, when positioned on the jig, will therefore be supported. both radially and axially, and maintained concentric with the axis .of the ram element. As also shown in Figure 10 the distance between the upper face of the section 1;! and the shoulder 65 equals the length of the sleeve 28; and the upper cylinder section 12 is provided with removable or adjustable shoulder elements which, when uti lized, project over the upper end of the sleeve 28, but not beyond it, thereby to lock the sleeve to the jig.

As shown in Figures 6 and 9 the section 12 has attached to its upper face a frusto-conical block 13 having a maximum or base diameter equal to that of the section 12, the block being secured by screws 14 entering taps in the section 12. The under side of the block 13 is formed with two intersecting diametrical recesses 15, and, in the cruciform recess thus provided, there are placed four radially slidable plates 16. The inner ends of the plates 16 are beveled, as shown at 11 in order that the plates may be withdrawn into the guide recesses 15 without mutual interference. Each plate is also formed in one of its side edge faces with a notch 18, which, in conjunction with a companion notch 19 formed in the adjacent wall of the recess 15 in which the plate is located, provides a pocket for a coiled spring 8|. These springs urge the plates 15 inwardly, and hence inside of, or at least flush with, the circumferential face of the section 12. The

per or outer end of plates it have their perimetric faces formed with upper beveled portions 16a.

In Figures 4 and 6, the plates 16 are shown in the plates to overlap the end of the sleeve 28 is to an extent not exceeding the outside diameter of the sleeve. Actuation of the plates to the extended positions is effected by means of a cam shaft 82 having an inner end portion rotatably mounted in an axial passage 83 formed in the cylindrical section 12. The shaft 82 is formed with a somewhat enlarged square section 34 coplanar with the plates 78 and arranged within the rectangle delimited by the inner end faces. The upper portion of the shaft 82 extends be yond the enlarged section 84 through an aperture formed in the block is into a finger piece 86 mounted above the block. The piece 86 is conical, and in effect it constitutes a continuation of the conical portion of the block it. It is secured to the shaft 82 by a set screw 37 (Figure the section 84 is also rotated whereby its corner portions, which are preferably flat faced, by enfor engagement in an arcuate recess 39 in the upper surface of the block '53. When the piece 86 is turned in the opposite direction, the plates In operation, the work piece, such as the engine block 26, is mounted on the rails 25, with the first cylinder to be treated brought into apelement l5, with the aid of the indexing scales The capstan wheel 43 is then rotated to move the clamping screw 38 down to the dummy shaft 39 (Figure 1) but not into full or strong contact with it. The ram element [5, while in its lower position, is then equipped with that size jig which is appropriate to the cylinders of the engine.

Assuming that the operation involves the removal both of a worn sleeve and the insertion the block to an extent necessary to bring the parts into exact alinement. Because of this ex-- pected action, the screw 38 should therefore not be tightened against the shaft 39 in the first in- When the cylindrical portion 72 of the jig has entered the bore 2?, and effected the perfect alinement of the cylinder block the screw 38 is tightened against the shaft 39, thereby positively to hold the block rigidly in position. At the end of the upper stroke of the ram, the

shoulder 66 at the lower end of the jig will abut the lower rim of the worn sleeve, i. e., the flange 68 when the sleeve is of the design shown, and the knurled piece 86 will project into the crankcase portion of the engine block, with the plates 16 just above the inner end of the sleeve 28.

The finger piece 86 is then manipulated to project the plates 16 into overlapping relation to the the block, the plates at such time being projected. The new sleeve is supported on the jig as it is forced home by the ram element [5 whereupon the plates 16 are retracted to disengage the sleeve and the jig is then withdrawn by the downward motion of the ram element I5, leaving the sleeve properly positioned in the bore 21.

The transformation of the device for either purpose of the removal or insertion of a sleeve centering and alining means. Hence the device possesses significant advantages for rapid, ac-

curate, inexpensive and complete operation.

The device may, of course be used with various I claim:

1. A jig comprising a body member formed with detachable connection means at one end, an annular shoulder formed on the member adjacent said end, a tapered element secured to the member at its opposite end, radial guide recesses rotatably connected to the tapered element, a cam shaft extending from the finger piece to said recesses and formed with a cam element engaging said plates, said shaft when rotated in one direction by the finger piece causing said cam to thrust the plates outwardly, spring means for returning said plates to their inner positions when the cam is returned to its initial position and cylindrical sections formed on the body member between the shoulder and plates to align and support a sleeve having an end engaging said shoulder.

2. A jig comprising a body member formed with detachable connection means at one end,

sleeve resting on said shoulder, a tapered element secured to the body member adjacent said second cylindrical section and having its maximum diameter of the same extent as the diameter of said second cylindrical section, radial guide recesses formed between the tapering element and the adjacent end of the member, plates slidably mounted in the recesses, a cam mounted in the recesses adjacent the inner ends of the plates and adjacent the upper face of the second cylin-' drical section, a shaft upon which said cam is provided and which is journaled in the second cylindrical section and in the tapered element, said earn as fitted between the tapered element and the second cylindrical section preventing the axial displacement of said shaft, said cam when turned in one direction effecting the projection of said plates and when turned in the opposite direction permitting the retraction of said plates, spring means for effecting the retraction of said plates, the cam shaft projecting beyond said tapered element, and a finger piece mounted on the projectingportion of the cam shaft adjacent said tapered-element and having a maximum diameter not greater than the minimum diameter of saidtapered element.

3. A jig for the removal or insertion of a sleeve used as a liner for thecylinder of an internal combustion engine comprising anelongated body member formed at one end with an annular shoulder which provides a seat for a'sleeve to be inserted or removed, with'a cylindrical surface adjacent the shoulder to provide internal radial support for the sleeve and with a second cylindrical surface at'its opposite end also to provide internal radial'support for the sleeve, a tapered element mounted on the'member adjacent said second cylindrical surface, means for connecting said element to the member and providing for the removal of said element from the member, said element as the jig is moved toward the cylinder engaging the end of'the" cylinder and effecting the shifting of the cylinder block in'a direction and to an extent such that as the movement of the-jig into the cylinder is continued the cylinder will be brought into accurate axial alinement with the jig, releasable means fitted between the body member and said element adjacent said second cylindrical surface for overlapping and engaging the end of the sleeve opposite to the end which is seated upon said shoulder, thereby to lock the sleeve to the jig, said releasable means comprising radially guided shoulder elements mounted for radial projection beyond said second cylindrical surface to an extent not exceeding the outside diameter of the sleeve for the purpose of said overlapping engagement and for radial retraction within said second cylindrical surface for releasing the sleeve, and manually operated rotatable means having an actuating shaft journalled in said tapering element and projecting outwardly beyond said tapering ele-' ment, the projecting portion of said shaft being accessible for manual operation to effect the actuation of said releasable means in engaging or releasing the sleeve.

'4. A jig for the removal or insertion of a sleeve used as a liner for the cylinder of an internal combustion engine comprising an elongated body member formed at one end with an annular shoulder which provides a seat for a sleeve to be inserted or removed, with a cylindrical surface adjacent the shoulder to provide internal radial support for the sleeve and with a second cylindrical surface at its opposite end also to provide internal radial support for the sleeve, a tapered element mounted on the member adjacent said second cylindrical surface, said element as the jig is moved toward the cylinder engaging the end of the cylinder and effecting the shifting of the cylinder block in a direction and to an extent such that as the movement of the jig into the cylinder is continued the cylinder will be brought into accurate axial alinement with the jig, releasable means fitted between the body member and said element adjacent said second cylindrical surface for overlapping and engaging the end of the sleeve opposite to the end which is seated upon said shoulder, thereby to lock the sleeve to the jig; said releasable means compris-' ing radially guided shoulder elements mounted for radial projection beyond said second cylindrical surface to an extent not exceeding the ou side diameter of the sleeve for the purpose of said overlapping engagement and for radial retraction within said'second cylindrical surface for releasing the sleeve, means for connecting said element to the member and providing for the removal of said element from the member, means including a shaft which extends through said tapering element and a cam fixed upon said shaftbelow said tapering element for operative engagement with the shoulder elements'in effecting their sleeve engaging or sleeve releasing actions, and rotatable means located accessibly for manual operation beyond said tapering ele ment and operatively connected to said shaft, the rotation of said manually rotatable means in either direction effecting the rotation of said shaft and the cam whereby to actuate said 'releasable means for engaging or releasing the sleeve.

- 1 FRANK C. WILSON.

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

UNITED STATES PATENTS Number Name Date 866,788 Holstein Sept. 24, 1907 869,861 Alspaugh Oct. 29, 1907 1,705,789 Steirly Mar. 19, 1929 1,776,776 Blackmarr Sept. 30, 1930 1,841,190 Ju'Stiss Jan, 12, 1932 2,151,616 Redell et a1 Mar. 21, 1939 FOREIGN PATENTS Number Country Date 18,977 Great Britain Aug. 18', 1909