US2003648A - Combined jack and wheel and gear puller - Google Patents

Description

June 4, 1935. v E ET AL 2,003,648

COMBINED JACK AND WHEEL AND GEAR FULLER Filed May25, 1933 3 Sheets-Sheet l 40 36 FRED L. FRYE INVENYORE IE 1 (OH/V K en;

A TTORNE Y June 4, 1935:

F. L, FRYE ET AL COMBINED JACK AND WHEEL AND GEAR FULLER Filed May 25, 1955 3 Sheets Sheet 2 I I E" 5 /5650 1. Hem INVENTORZ A TTORNE Y June 4, 1935- F. L. FRYE ET AL COMBINED JACK AND WHEEL AND GEAR FULLER v Filed May 25, 1933 3 Sheets-Sheet 5 IN VENTOR} A TTORNE Y Patented 1,... 4, 1935 Fred L. Frye and John K. Frye, New Boston, 111., assignors of one-half to Harry Englehart,

Davenport, Iowa Application May 25, 1933, Serial N... s'zzaao 7 Claims. (Cl. %986) The present invention relates to an apparatus for pulling wheels and gears which may also be used as a jack when such an apparatusis needed. Among the objects of this invention are to provide an improved apparatus of the'character indicated; to provide an apparatuswhich is designed for various uses rather than for a single purpose; and such further objects, advantages and capabilities as will hereafter appear and as are inherent in the construction disclosed herein.

Our invention further resides in the combination, construction and arrangement of parts illustrated in the accompanying'drawings and, while we have shown therein what is now considered the preferred embodiment of this invention, we desire the same to be understoodas illustrative only and not to be. interpreted in a limiting sense. In the drawings annexed hereto and forming a part hereof, t 90 Fig. 1 is an elevation, partly in section and partly broken away, of an apparatus which we now consider the preferred embodiment of this invention;

Fig. 2 is a plan view-10f the structure shown in I 25 g. 1;

Fig. 3 is a longitudinal section taken substantially along the plane indicated by the line 3-4, P18. 2; 1

Fig. 4 is a transverse section taken substanao tially along the plane indicated by the'line H,

Fig. 5 is a fragmentary longitudinal section taken substantially along the plane indicated by the line. 5-5, Fig. 4; 35 Figs. 6 and I are, respectively, plan and transverse section of an element, the use of which is indicated in Fig. 1; f

Figs. 8 and 9 are, respectively, plan and section of another form of the unit'shown in Figs. 4,0 6 and 7, Fig. 9 being taken substantially along the plane indicated by the line 99, Fig.8; J

Fig. 10 is an elevation, partly in section, of a driving pin which is used as a wrench for turning the jack screw.

The jack shown in Fig. 3 will flrstkbe described and then the attachments and their uses will be referred to in detail. This construction comprises a base I, a head 2, an outer tubular member 3,

a middle tubular member I, and an. inner tubular shown in Fig. 2, has openings II 'are counterbored, as indicated at II and 22.v The .50 member 5. Preferably the latter is made integral with the base I to avoid any likelihood of leakage of fluid through a movable. joint between the base I and the tubular member 5. While we have shown the tubular members "3, band! as being 55 cylindrical, it will be understood that these might other.

bemade in other forms, if desired. However, we consider the cylindrical form the most desirable for numerous reasons. Between the tubular members 4 and 5 is a piston 6 which carries at its lower end a head I provided with sealing means 5 8, as is customary. At its upper end, the piston 6 has a screw-threaded opening for the reception of the externally screw-threaded extension 9 by means of which the piston may be lengthened, when this is desirable. M

The -screw-threaded extension 9 has a central point Ill upon its exposed end, the same being designed toenter a corresponding depression in the end of an automobile axle to provide against inadvertent slipping of one with relation to the 15 This end of the extension 9 is somewhat reduced in diameter and has a-ring H rotatably mounted thereon. It is not essential that this ring be rotatably mounted, though we consider it desirable that it be constructed in this way; Preferably the ring I I is roughened upon its normally upper face, as well as upon its lateral edge. However,- this is not essential, though desirable. At its normally lower end, the extension 9 is somewhat reduced in diameter and has a crosspin l2 extending therethrough, the same being intended for engagement by notches I3 in the end of the driving-pin I4. This driving-pin has a socket. l5 into which the reduced end of the extension 9 enters when-the driving-pin is to be used. It will be evident that this drivin -pin may be'used both to turn thescrew 8 in the end of the piston i and to serve as means for transmitting driving force through the screw' l.

The base I has openings the'rethrough for the reception of bolts II by means of which the head and base are tied together. The-openings in the base I are counterbored for the reception of the nuts I8, the intention being that the nuts I8 shall not project beyond the lower face of 40 the base. Gaskets are provided between the ends of the tubular member 3 and the adjacent base and head. Also, a gasket is provided be- J tween the end of tubular member 4 and the base.

when the nuts I8 are tightened up, the gaskets ,are compressed and prevent leakage of the fluid contained within the jack, this fluid being preferably oil. v

The head 2, which is somewhat elongated, as

therein which o'penings 2| are partly spherical for the reception of the similarly shaped face of the nuts 23-which outwardly, according to the size of thegear which it is necessary for the. ends 25 to engage. With the nuts 23 and the counterborings 2| shaped as,

shown, it is possible for the nuts-to rock with relation to the head 2 without placing any undue strain upon the hooks 24.

piston 5 to prevent leakage of oil along same as it is moved in and out through the head 2.

A filling opening is made in the tubular memher 3 and has a screw-threaded plug 21 inserted therein to prevent leakage from the interior of the deviceafter it has been fllled and the opening closed. A boss 28 is formed on the upper face of the base i and has a screw-threaded opening therein for the reception'of the screw-threaded end of the pump cylinder 29 in which the pump piston 30 reciprocates. As is apparent from Fig. 1', the handle 3| is pivotally connected to the piston 30 and to the post 32. This latter has a base 33 to which it is pivotally connected and the base has screw-threaded connection with the base I.

There is an opening in the base I below the lower end of the pump cylinder 29 and from this opening 35 extends 'a passageway 35 which is intercepted by a passageway 31, having at its inner end an upwardly extending opening 38 which communicates with the chamber between the tubular members 3 and 4. In the chamber 31 is a ball valve which is pressed against its seat by means of a spring mounted in the chamber or passageway. 'This valve serves to prevent return of oil pumped out of the reservoir between the members 3 and 4 by the pump 29, 30. A

Y passageway 40 extends from the chamber 35 inwardly.to a vertically extending passageway 4| communicating with the chamber below the piston 6 and between the tubular members 4 and 5. This is shown most clearly in Figs. 3 and, 4. In the passageway 40 is a spring-pressed ball valve 42 which prevents return flow of oil pumped into the piston chamber by the pump 29, 30. It will thus be seen that the two ball valves operate in 'the same way to prevent return flow-of. oil from the piston chamber to the storage reservoir. The details of the valve 44 are shown in Fig. 5, from which it will be seen that a passageway 45 connectsa pair of passageways 46 and 41, the passageway 45 being controlled by a valve member 43. From the foregoing it will be seen that when the valve 44 is opened the fluid will be permitted to flow from the piston chamber through the passageways 46, 45 and 41 into the storage reservoir.

. This will permit, the jack pistonwt to lower, as is necessary when the work of the apparatus is complete l.-v

A hollow member 50 has its lower end reduced,

as indicated at 51, in Fig. 1, and externally screw-threaded to be screwed 'into the correspondingly threaded opening 52 in the top of head 2. The piston 5 slides freely within the end ll of member 5., just as member 5 slides freely within the tubular member 5. While the threads in the opening 52 are shown as left hand threads, it will be understood that it is immaterial whether these are right or left hand threads. However, it will be preferable to have them regular right hand threads in order to avoid confusion in use. [Member ill is provided with a lateral openin: 53 and a slight end'flange 54, the interior face of the member 50 being-slightly frusto-conical I Oil seals are shown as engaging the inner and outer surfaces of the I v f to closely fit the outer face of the interrupted ring 55. This taper will prevent spreading of the member 55 in use and the parts may even be made of a size such that the ring will be slightlycompressed under ,strain. Some of the members 55 are made with a smooth internal wall, as shown in Fig. 1, and some have this wall screw-threaded, as indicated in Figs. 6 and 7, so that they may be screwed to the end of a wheel hub, when pulling the wheel from the axle.

The type of construction shown in Figs. 1, 8 and 9 is used where the hub is provided with a flange which can be engaged by the ring 55, while/- the structure shown in Figs. 6 and '7 would, as indicated above, be used where the hub is externally screw-threaded and not provided with a flange. If, upon operation of the pump to put pressure upon a wheel or gear to cause removal thereof, it is found that same does not yield to such pressure, the driving-pin l4 may be applied to the reduced end of the extension Wand then tapped gently with a hammer. will tend to cause loosening of the wheel or, gear from the axle or shaft so that, when the pump is actuated again, separation of the parts will be likely ,to be caused.

If difliculty should be experienced in turning the extension 9 so as to cause it to project farther from the piston 6, the driving-pin 14 can be inserted through the base of the jack and the openings l3 engaged with the pin I2, whereupon pin' l4 can be turned to cause turning of the extension 9 to cause it to be retracted or pro- However, if it is found thatone or both of these is in the way, one or both of the nuts 23 may be removed so that the hooks 24 may be withdrawn from the openings '20. They will then notbe in the way and will not interfere with the use of the device as a. jack. Whether this will have to bedone or not will depend entirely upon the amount of space available for the insertion of the jack. When the structure is used asa wheel or gear puller, these hooks are essential,

except in a few cases'in which it may be desired to remove a small gear which may be put through the end opening in member 50. Instances of the possibility of such use will be so few as to be negligible and it will therefore be unnecessary to consider them further.

It will of course be understood'that the specific departed from without departing from the spirit of our invention as tset forth herein and embraced in the following claims.

Having now described our invention, we claim: 1. A jack comprising a base having an up- 1 standing tubular member provided adjacent its upper end with a liquid'seal ring, a piston surbase, there being liquid chambers between said tubular members, a head spaced from said base and cOnnected to said second and third tubular description of structure set forth above may be members in liquid-tight relation, said head havope'ningand surrounding said piston to prevent leakage of liquid around said piston, the second mentioned tubular member having an opening therethrough adjacent said head to connect the liquid chambers for flow of liquid between them, and means for forcing liquid from the outer liquid chamber to the inner liquid chamber below the piston to cause movement thereof, the opening in the tubular member being free from connection with both liquid chambers.

2. A structure as defined by claim 1 havinga screw-threaded member extending longitudinally through the first mentioned tubular member and having threaded connection with the piston.

3. A structure as defined by claim 1 in which the base has an opening therethrough in alignment with the first mentioned tubular member and the piston has an inwardly extending flange adjacent its upper end, the inner face of the flange being screw threaded, and an elongated externally threaded member whose threads engage and cooperate with the threads of the flange, said member serving as an extension of the piston. t

4. A structure of the nature indicated com prising a body provided with a base having an aperture therethrough, a jack'element within said body and extending substantially perpendicularly away from the base, said jack element being mov-' able by hydraulic force, and separate means to whereby rotative force may be transmitted from the separate means to the Jack element.

5. A structure of the nature indicated comprising a body provided with a base having an aperture therethrough, a hydraulically operated element within the body capable of projection therefrom, and separate means to be inserted through the aperture in the base to engage the end of the hydraulically operated element and totransmit rotative force thereto to cause extension or retraction thereof.

6. A structure of the nature indicated .comprising a body provided with a base having an aperture therethrough, means for attaching the bodyto work, a jack element within said body and extending substantially perpendicularly away from the base, said jack element being movable by hydraulic force, and separate means to be inserted through the aperture in the base to engage the end of the jack element and to transmit blows to the jack element, said jack element and separate means having interengaging parts whereby rotative force may be transmitted from the separate means to the jack element.

7. A structure of the nature indicated comprising a body provided with a base having an aperture'therethrough, a hydraulically operated element within the body capable of projection therefrom, means for attaching the body to work,

rotative force thereto to cause extensionor rei traction thereof.

FRED L. FRYE.

JOHN K. FRYE.

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