US2641831A

US2641831A - Sleeve puller

Info

Publication number: US2641831A
Application number: US196789A
Authority: US
Inventors: Helton William Henry
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-11-21
Filing date: 1950-11-21
Publication date: 1953-06-16
Anticipated expiration: 1970-06-16

Description

Patented June 16, 1953 UNITED STATES YPATENT GFFICE SLEEVE PULLER William HenrylHelton, Burns, Kans. Application November 21, 1950, Serial No. 196,789

3 Claims.

My invention is directed to improvements'y in sleeve pullers of theA impact type. v

While the sleeve puller according to my invention is particularly adaptable to pull or extract sleeves of internal combustion engine blocks it may? equally as well be used to pull other sleeves such as bearing mountings', racesand the like.

It is an object of the invention to provide a sleeve puller which may be passed through. a lsleeve to be pulled from one end and engaged with the foot or inaccessible end of the sleeve through manipulation of an operating device extending through the body of the sleeve puller to the upper exposed and accessible l.end of the sleeve puller.

A further object of the invention is to provide in a sleeve puller an upper end of sleeve engaging plate with adjustable connecting means for connecting it to the body of the sleeve puller in a manner so that it is tightly set against the upper end of the sleeve being pulled.

`A still further object of my invention is to provide in a sleeve puller anelongated hollow body member with a sleeve .engagingmeans at lits lower end operated to engage and disengage ythe lower end of a sleeve by an operating rod l extending up through the hollow elongated'body to the upper operating end thereof together with atop of sleeve engaging plate that is adjustably mounted along the elongated hollow body member and a slidable concentrically mounted'impact member on the hollow elongated rod which may strike against the sleeve engaging plate and a head on the upper end of the elongated hollow body member.

A still further object of my invention isto provide in a sleeve puller a foot engaging means for the bottom end of the sleeve being pulled which has a housing connected to the lower end of an elongated hollow body member that is adapted to pass through the sleeve being pulled and has mounted in apertures inthe housing, slide members which slide substantially transverse to the axis of the hollow body member and are biased to an inwardly slid position and moved to an outwardly slide position by means of -a rod controlled wedge shaped operating member that engages inclined faces'on the inner ends of the slide members when the operatingA rod is moved axially within the elongated hollow body l given hereinafter; it should be understood, however, that the detailed description vand specific examplesare given by way of illustration only and, while indicating preferred embodiments of the invention, are not given by way of limitation, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.

y My invention will be described inl more `detail hereinafter in conjunction with the accompanying drawings, in which:

Figure l is a side elevation of the sleeve puller in attached position with a 4cylinder sleeve as it is being pulled out of a cylinder block mounting;

Figure 2 is a vertical cross section of the sleeve puller shown in Figure 1 with the sleeve being pulled and its mounting block omitted;

Figure 3 is a vertical cross sectional view similar to Figure 2` showing a modified form of mounting the top of sleeve engaging plate 'on the elongated hollow body of the sleeve puller;

and

Figure 4 is a somewhat enlarged cross sectional detail view of the lower end of sleeve engaging foot of the sleeve puller.

The particular illustration of use of the sleeve puller according to my invention isy in pulling a cylinder sleeve I0 mounted in a block I-I of an internal combustion engine. Other sleeves and races as heretofore referred to may equally as well be pulled or backed out of their seated mounting with my sleeve puller. The upper end of the cylinder sleeve is indicated at I0 and the foot or lower end I0 which is within the cylinder block and is relatively inaccessible.

The sleeve puller is generally indicated at I2 and is inserted through the upper end I0' of the sleeve Ill to be pulled or backed out of the block II. The sleeve puller is built up about an elongated hollow body rod I3 which is common to all figures of the drawings. The lower end of this rod I3 has attached a foot or bottom of sleeve engaging assembly generally indicated at I4 vand shown in enlarged detail in Figure 4.

This foot engaging assembly I4 comprises a hollow open ended cup-like housing I5 having a threaded aperture I5 in its base I1 which is kthreadedly connected to the threaded lower end I 3' of, elongated hollow rod I3. A lock nut I8 securely holds the housing I5 in position on the endof rod I3. Housing I5 is provided with a plurality of apertures I 9 in its wall whichv v`apertures extend substantially transverse to the longitudinal axis X-X' of the elongatedhollow rod I3. There is illustrated, for example, in Figure 4 the two oppositely disposed apertures I9--I 9 within which are slidably mounted slide elements 2li-20.

The slide elements 20 are formed with a depending portion 2U and with their inner ends formed with outwardly and downwardly inclined faces 2l in the form of tongues which are received in cooperating inclined grooves 22 in a wedge member 23 having a threaded central aperture 24 which is threadedly received on the lower threaded end 2l of a control rod 28. Control rod 28 extends up through the elongated hollow rod I3 where it is threaded at its upper end 29 to receive a knurled surfaced knob 30 which is held in iixed position by a lock nut 3|. tating control rod 28 in a clockwise direction as viewed from its upper end, its threaded lower end 2'! screws into the internally threaded wedge element 23 thus pulling the wedge 23 upward and forcing outwardly the slide elements 20-20 against biasing compression lsprings 25 seated in pockets 29" in the depending portions 120 of the `slide elements and with their outer ends pressing against the adjacent inner walls of housing vI 5. Thus, upon rotation or movement of the control 'rod in the `reverse or opposite direction, the wedge element isv moved downwardly permitting the biasing spring elements 25 to force the slides 20 back through their aperture mount- -ings I9 in the housing I5.

In Figures 1, 2 and 3 the slide elements are shown in extended position where they will engage the sleeve to be pulled I9 as byrabutting its lower edge as shown best in Figure l. Thus, upon forcing or driving the elongated rod upward, the sleeve I D will C be carriedvonly with it and pulled out of its mounting as in the block II.

Still referring to the foot engaging means I4,

"it will be observed thatfthe foot engaging means 14 is of a sufiicient diameter in size to fit within rthe sleeve IB.

Ytion of engagement with the sleeve I as shown in Figure l and as heretofore described.

The housing E may be fitted with a closure `'32 in the form of -a circular plate that is held in place by suitable securing screws 33 threaded into the walls of housing I5.

VIn order to securely fasten the sleeve puller within the sleeve, an upper end of sleeve engaging plate 35 is provided and it has a suitablerecessed ridge 35 which engages the `upper Vend I0 of the sleeve Ill. Plate V35 is apertured and threaded at its center 36 and is adjustably connected to rod I3 intermediate the rods as will be described.

By rof In Figures 1 and 2 one form of adjustably connecting plate 35 with rod i9 is shown. An elongated sleeve 37 is slid over hollow rod I3, concentric therewith, and has an externally threaded lower end 31 and an internally threaded upper end 31". Center threaded aperture 36 in Vplate 35is screwed onto the end 31' of sleeve 3l the threads so as to secure the proper spacing between the foot engaging means I4 and the plate 35. In the position of parts shown in Figure 'l it will be noted that the sleeve puller is secured tightly in place in sleeve I0 for the actuation of the impact hammer to be described.

Slidably mounted over sleeve 31 in Figure 2 and concentric therewith and with elongated hollow rod I3 is a relatively heavy hammer member 39 in the form of a cylinder with a longitudinally or axially extending center aperture 4I) which is concentric with the elongated hollow rod axis X-X', see Figure 4. A pair of suitable operating handles 4 I-4I are secured to the hammer .39 in opposed position and transverse to the longitudinal axis by means of threaded stems 42 thereon which are received in threaded apertures 43 in the hammer member 39. 'Ihis hammer member is made of steel and is suitably hardened to withstand the impact blows as are the other partsV of my sleeve puller.

On the upper threaded lend 3T' of the hollow rod 1I 3 is threadedly secured a head 44 in the form kof a lnut 'which is provided with suitable `pin receiving apertures .as `at 44 in which may be inserted a pinfor turning the head. This head 44 serves as an anvil as does the plate 35 against which the slidably mounted hammer 39 'may strike when manipulated by the operator grasping the oppositely disposed handles 4I--4I thereon.

In the modified form of my invention as shown in Figure 3, there is illustrated `another adjustable connecting means for `the plate which fits against the upper end I0 of the `sleeve to be pulled and here ldesignated plate 45.. Plate 45 has a center threaded aperture 46 .which is received on the threaded end 41 of a slidably mounted collar 48 on elongated hollow body rod I3. Suitable tightening screws 49 arethreadedly mounted in threadedside apertures in the collar 48 and when screwed in againstl the hollow `rod I3 hold the collar 4:8 tightly secured thereto. Additional securing means for the collar 48 is provided in the Ylock collar 59 mounted therebelow and likewise provided with securing screws 5l.

rI have provided in my sleeve puller, a mechanism that is easily attached to a sleeve to be pulled by inserting through one end thereof and securing it in the sleeve by operation of a control rod knurled knob 30 to set the foot engaging means. Also from the same end of the tool the upper end of sleeve engaging plates as at 35 and 45 may be tightly set up against theend of the sleeve I0 being pulled. After -securing the puller in place in the sleeve Il), then the easily operated hammer 39 may be slid between the anvil, namely,

plate

35 or 45 and head 44.

For sleeves of different size suitable larger or smaller foot `attaching assemblies I4 and plates 35 may be used with the same operating and mounting mechanism.

Since it is obvious that certain further changes can be made in the foregoing constructions without departing from the spirit and scope of this invention, it is intended that all matter shown in the accompanying drawings 0r described hereinbefore shall be interpreted as illustrative and not in a limiting sense.

I claim as my invention:

1. In a sleeve puller, an elongated hollow rod having an externally threaded portion at its upper end; a hollow housing attached to the lower end of the hollow rod .adapted to llit inside the sleeve to be pulled and having a plurality of apertures therein extending substantially transverse to the axis of the hollow rod; a sleeve engaging means associated with said housing; a control rod extending through said hollow rod and connected with said sleeve engaging means whereby actuation of said control rod causes said sleeve engaging means associated with the housing to engage and disengage a sleeve to be pulled; said sleeve engaging means comprising a plurality of elements slidably mounted insaid apertures of the housing and adapted in outwardly slid position to project beyond the connes of said housing to abut `against the end of the sleeve to be pulled, biasing means urging the slide elements to slide in one direction in said housing apertures and means on the end of said control rod within the housing adapted to engage said plurality of slide elements to urge them in the opposite direction to said biasing means action when the control rod is moved in one direction and permitting the biasing means to move said slide elements in the opposite direction; a sleeve engaging plate having a threaded aperture at its center; means to adjustably connect said plate to said hollow rod intermediate its ends whereby the plate engages the opposite to said other end of the sleeve to be pulled comprising an elongated sleeve mounted over the hollow rod and having an internally threaded upper end in threaded engagement with said upper threaded end of the hollow rod and an externally threaded lower end for receiving the internally threaded sleeve engaging plate, whereby said elongated sleeve may be moved along said hollow rod by its threaded engagement with the hollow rod to position said sleeve engaging plate at a selected position intermediate the ends of the hollow rod; a head attached to the upper end of said hollow rod; and a hammer mounted concentric with said hollow rodfor sliding movement between the sleeve engaging plate and the head whereby the hammer may strike the sleeve engaging plate and the head.

2. A sleeve puller of the character described in claim 1 wherein said biasing means urge the slide elements inwardly in the housing apertures, said inner endA of said slides are inclined surfaces, said slide operating means on the lower end of the control rod is a wedge element having inclined surfaces in engagement with said inner inclined end surfaces on the slide elements whereby movement of said control rod in one direction moves said wedge element attached thereto into engagement with said inclined ends on the slides to force the slides outwardly against said biasing means while movement of the control rod in the opposite direction permits said biasing means to move said slides inwardly.

3. In a sleeve puller, an elongated hollow rod, a sleeve engaging foot means positioned at the lower end of said hollow rod, a control rod extending through said hollow rod and connected with said foot whereby actuation of the control rod causes said foot means to engage and ,disengage a sleeve to be pulled, a sleeve engaging plate, means to adjustably connect said plate to said hollow rod and hold the plate at a selected position thereon intermediate the ends of the hollow rod whereby the plate engages the opposite to the foot engaging end of the sleeve to be pulled, a head attached to the upper end of said hollow rod, and a hammer mounted concentric `with said hollow rod for sliding movement between the sleeve engaging plate and the head whereby the hammer may strike the sleeve engaging plate land the head, said hollow rod has an externally threaded portion at its upper end, said sleeve engaging plate has a threaded aperture at its center and said means to adjustably connect said sleeve engaging plate to said hollow rod intermediate its ends comprises an elongated sleeve mounted over the hollow rod and having an internally threaded upper end in threaded engagement with said upper threaded end of the hollow rod and an externally threaded lower end for receiving the internally threaded sleeve engaging plate, whereby said elongated sleeve may be moved along said hollow rod by its threaded engagement with the hollow rod to position said sleeve engaging plate at a selected position intermediate the ends of the hollow rod.

WILLIAM HENRY HELTON.

References Cited in the file of this patent