US 1893414 A
Description (OCR text may contain errors)
Jan. 3, 1933. H. P JOHNSON ET AL COMBINATION FULLER Filed Feb 2. 1932 2 Sheets-Sheet 1 q 7 \\\\\\\\/|\\\|.I| I11 I I C 6 7 w J z 1 M 2 a. 2 i H s F m 1, 6 W fl l 7 I z v J m HaawayRJ Jan. 3, 1933. r H. P. JOHNSONET AL 1,893,414
COMBINATION FULLER 2'sheets sheet 2 Filed Feb 2, 1952 HaJw/ayBJd/hman Bhillijwfl Clarke Patented Jan. 3, 1933 .UNITED STATES [PATENT .oFF1ca HARVEY r. aonnson, or nnm'rwoon, AND rnmmrs a. omxn, or mrm'rsvILLE,
, MARYLAND COIBINATION PULLER Application filed February 2, 1982. Serial'lio. 580,4761
This invention relates to a combination pulling device and aims to provide an improved combination puller to facilitate the dislodgment or unseating and removal of various articles from their supporting structures.
A device of this character is particularly useful as an aid in the removal of bearings, washers, gearing, etc. from shafting orv from the interior of tubular members, for the withdrawal of automotive rear axle shafts, and for other like purposes.
For the removal of articles of this character is particularly desirable that provision be made for so positioning the tool that the pulling stress will be symmetrically applied to the article to be moved. For example, in the removal of hardened members from stud shafting, it is particularly necessary that the dislodging force be applied symmetrically about the member and in a direction to pull it smoothly along the shaft, as any unbalance of the applied force will tend to. pull oneside of the member more rapidly than the other and cause it to dig into the shaft with consequent increase of the force necessary to re-.
move it, and possible warpin or scoring of the shaft itself to an extent w ich might impair its runnin in journal bearings, or the application of urther cooperative members thereto.
In addition we have found that in the removal of articles from stud shafting or the like, the dislodgment of the article 1s greatly facilitated by applying to the article an initial stress tending to urge it in the direction in which it is to be moved, which stress is maintained u to and throu h the moment of' applying a dislodging shoe in the same direction. By this novel provision the cumulative effect of the initial stress and the dislodgingshock is made available to dislodge articles which could not be readily dislodged by the shock alone.
Furthermore, in the pulling of shafting, bearing caps or other articles which should be pulled in a direct line to prevent distortion of the articles themselves or of members positioned adjacent thereto, and to enable their removal with the least possible efi'ort, it is desirable that provision be made for insuring aligned application of the removing force,
and our invention is particularly adapted to this end.
Other objects and advantages of our invention will be readily apparent from the following description of a preferred. form of combination puller and accessories embodying the same; and in the accompanying drawings showing such preferred embodiment for the urposes of illustrating our invention:
F1 1 is an assembly view of a puller provide with three arm means for engaging an article;
Fig. 2 is a detail view of the arm receiving cross member of Fig. 1
Fig. 3 is a similar assembly view with parts in sect-ion of a pullerprovided with two arm article engaging means and spreader means therefor; 7
Figs. 4 and 5 are elevation and plan views, respectively, of a hub pulling attachment, Fig. 4 being partially sectioned on the line 44 of Fig. 5; and
Figs. 6 and 7 are detail views of further accessories to the tool.
In the particular embodiment of our invention selected for illustration herein and shown in the drawings, referring particularly to Figs. 1 and 2, prises a rod 10 threaded for a substantial distance at its inner end and provided with a head 11 shaped to receive turning means such as a wrench and/or turning bar for the ur-v poses hereinafter described. This hea 11 may be formed integrally with rod 10 or secured thereto in any desired way, a satisfactory and economical manner of construction bein indicated in Fig. 3, which shows the hea 11 threaded to rod 10 and fastened in place thereon b a driven in 12 passing through the hea and rod an filed flush with the combination .puller com-' the exterior surface of the head. This figure firmly knocked against its head 11 to apply v pulling shock to the rod, and is adapted to be screwed through a suitable cross member 15, 15a which is preferably provided with bifurcated ends to receive the article engaging arms 16, which may be of any desired number, but are preferably symmetrically arran ed about the rod. The arms are secured to the cross member in any suitable fashion, the securing means shown comprising headed pins 17 retained by cotter-pins 18, which are easily removed to permit reversal of the arms 13 to direct their hooked article engaging ends either inwardl or outwardly (see Figs. 1 and 3) or to permit the substitution of other types of arms or en aging means therefor, as hereinafter descri ed. The hooked ends of the arms may be shaped, if this is desired, to form an angle of less than 90 with re- 3 spect to the direction of pull to provide an article engaging means which will obtain a firm purchase on the article to be pulled, and
assist in holding the tool in preliminary attached position as hereinafter described.
It will be noted that in the forms shown the bifurcations of the cross member 15, 15a providing for attachment of. the article en gaging arms16, are symmetrically located on opposite sides of the rod 10 to provide for equal distribution to the arms 16 of any force applied through the rod 10, so long as the rod 10 is aligned in the direction in which the article is to be pulled. As above mentionedthis provision is particularly necessary in delicate removal operations where care must be taken not todeform the article being dislodged or any delicate surrounding arts. p The means to insure the ali ment of the rod 10 with the direction in w ich the force is to be applied, in the embodiment shown, is I provided by the threaded portion of the rod ends be shaped to be sel 10 which enables the rod to be, extended between the article engaging arms 16, or members substituted therefor, and into enga ment with the 'end of the shaft from which the article is to be pulled, or with a portion of the article itself. By this means, and with the assistance of the hooked ends of the'ar- "ticle engaging members, particularly if these -grippin as above mentioned, the entire puller. may rigidly attached in operative engagement with the article tobe pulled, with its rod 10 al' ed Y in the direction in which the pulling orce should be applied.
This arran sir-able in em ling the a plication of initial tension to the article to e pulled. For exam Is, in pulling a ear from a shaft, the r0 10 mag be screwe down tightly against the end 0 the shaft by meansofa wrench applied to the head 11; thus applying a sub- I stantial tension to the arms 16 engaged with the gear or like .element whichis to be rethe member 15, 15a, arms 16 ms. be maintained in en ment is also particularly deerations where the alignigg moved from the shaft. By this arrangement aligned initial tension is maintained up to and during the moment of the application of ulling shock by the sudden knocking o the hammer member 14 against the head 11.
In the preferred embodiments of our invention shown in the drawings, to facilitate alignment and avoid distortion of the rod 10 when screwed tightl into engagement with an abutment for a igning the tool with,- and/or applying initial tension to, an article to be pulled, we provide the engaging end of the rod 10 with a hardened relatively pointed bearing-tip 19 (see Figs. 1 and 3) to avoid tendency of the rod to meander as results if a flat end is rotated against a surface, and this relatively pointed tip is adapted particularly for 000 )eration with the centerholes formed at t e centersof the ends of most machined shafting, axles, and other stock during the manufacture of the same, to provide exact alignment of the tool therewit Furthermore, in situations where the operator is cramped for space, the extensibility of the rod 10 is particularly advantageous even where its aligningand tension applying utilities are not em loyed, as by this arrangement the length 0 the rod 10 can be adjusted to the greatest length allowed by the space available, so that a maximum throw of t e hammer can be obtained; and as the article is gradually withdrawn, the rod can be screwed in to maintain clearance between the head of the rod and any interferin structure which would otherwise be abutte thereby before substantial or complete removal of the article.
Thus in the removal of an internal washer bearing, such as a grease retainer in the rear axle housin of an automobile, when as is frerpliently t e case the space between the end of t e housing and the garage wall or other obstruction is cramped, the rod 10 can be screwed through the cross member 15, 15a into the interior of the housing, as the retainer is withdrawn to maintain the head 11 clear of the interf other structure.
' In pulling of this character, when using the equipment so far described in a manner to enable free running [of the rod 10 throu b aged'relation with t e article being pull by grasping1 the rod 10 adjacent its threaded portion an thus holdin the hooked'ends tightly ering garage wall or ehooked ends of t e greasev a ainst the artic e, and in this connection a se f-grip ing construction of the hooked ends of t e rods, mentioned above, is of par.- ticular utility.
A further cooperating feature of our invention, of particular utility in pulling 0por tension :1
plying functions of the r 10 need not used but where it i's difiicult to obtain and similar movable members with the article to' Figs. y
10 and maintain'the engagement of the arms 16 or be pulled, residesin the provision of engage- 'ment setting means comprisin members 20,
20" (Fi .3) adapted to be carried by the rod manipulated by adjustment of the rod to efiectand maintain the enga ement of such movable work engaging mem rs. In the form shown the en agement setting memhere 20, 20 are forme tocooperate with the .inner faces of the inwardly inclined portions of the bent arms 16 so that movement of the setting member longitudinally between the arms will effect outward displacement thereof to cause and maintain engagement of'the hooked ends of the arms with the work. In the preferred embodiment of our invention illustrated in the drawings the setting member 20, 20 is in the form of a disc having its peripheral portion shaped to smoothly slide between the inner faces of the arms 16 and provided with a central aperture to engage over the end of the rod 10 in mounting the setting member thereon, means being provided to retain the setting member at a predetermined position on the rod, which comprises any suitable stop means such as the shoulder'22 (Fig. 1) provided by reducing the end of the rod at 23 to 'a diameterv less than that of the threaded portion thereof. By making the member setting means readily demountable, as shown, and confining all portions of the end of the rod 10 to a diameter less than that of the threaded portion thereof, rovisionis also made for ready removal o the cross member 15, 15" to enable the use of substitute cross-members of differ- -ent proportions or the use of accessory article engaging means such as that shown in 4 and 5 and hereinafter described.
positioning the arms of our puller so that their hooked ends are turned inwardly as shown in Fig. 1, the device is adapted for use for work such as the pullin of an axle shaft from its housing, in whic case a nut will be threaded onto the end of the axle, the hooked arms .will be placed behind the nut, and the rod 10 will be screwed down into engagement with the end of the axle shaft to position the rod 10 in direct al' nment with the axle. The puller being tiius rigidly attached to the axle, the sliding weight 14 may be manipulated against the hea 11 to apply pulling shock to the axle shaft, and thus withdraw it from its assembled position by a direct lineal ull. This.
avoids'any danger of bending t e axle or any rease retainers, rings, or bearing races carried by its end.
Furthermore, the bifurcated construction of the ends of the cross member 15, 15 enable the insertion therethrough, in lieu. of the arms 16, of studs or other screw members, and this provision is particularly advantageous in the removal of wicked or similar bearing capsand like parts. In such cases the studs may be threaded into the bearing caps, and the rod 10 may be screwed tightly down against the same to hold the bifurcations of the member l5, 15' ti htly engaged with the heads of the studs and hold the rod 10 aligned with the direction of pull; after which the hammer 14 may be manipulated to dislodge the bearing cap or like part. suflicient shock can be obtained .to cut the wicking or other elements interfering with dislodgment of the cap, thus obviating the difficulties heretofore experienced in removing the same before the cap could be withdrawn.
To further extend the ran e of usefulness and/or convenience of app ication of our device to various sorts of pulling operations, further supplemental or substitute accessory parts may be employed in conjunction with the combined anvil headed hammer carrying and adjustable rod 10 which rovides either pulling, alignin tensionapp ying, tool setting, and/or 0t er cooperatm function in our impact tool, and Figs. 4 t rough 7 are illustrative of such further accessory parts.
The accessory shown in Figs. 4 and 5, for example, comprises a thimble body 30 rovided with an endaperture 31 threade to engage with the rod 10 to enable the thimble to be substituted for the cross-member and arm assemblies of Figs. 1 and 2. At its open face the thimble is provided with one-or more series of uniformly spaced stud receiving apertures 32, 33 adapted to coo erate with the wheel retaining studs carrie by hubs provided with demountable wheels for securing the thimbles to such studs. The thimble is also provided with means such as the hexagonal sha ed portion 34 to enable tfie thimb e and hu to be held stationary during rotation of the tension applying rod 10, or vice verse, to enable the application of a hi h initial tension to assist in removing the hu One or more apertures 35 may be provided in of the abutment of the puller rod 10 with the end of'the axle, etc., and, as our invention.-
contemplates the application of a nut to the axle-shaft inspaced relation to the hub to be ulled .to prevent the hub being jerked entirely ofi the axle by the sudden heavy impact provided b the heavy embodiments ofour tool utilize 'in this connection, the apertures are of additional utility to enable adjustment of such stop-nut, which is indicated at 36 in Fig. 4.
The accessory shown in Fig. 6 comprises a yoke or washer 40 intended for use with a have malleable shanks enabling them to be 3 entirely 0 pair of boltsan d nuts of a size to fit the ifurcations of the'cross-member 15* (Fig. 3), and having apertures 41 correspondingly sized. This yoke member is intended to be Q dropped down over the narrow neck of the style of undemountable automobile wheel or the style of hub for a demountable wheel having such narrow-neck behind its hub-ca carrym portion, after which the bolts and nuts, whic are inserted in the holes 41 are of such length as to extend outwardly beyond the end of the axle from which the wheel is to be pulled are engaged in the bifurcated portions of the cross-member 15 (Fig. 3). The wheel retaining axle nut and associated parts having been removed, the rod 10 may now be screwed through the cross-member 15 to apply initial pulling tension to the wheel, which may then be augmented by the sudden hammer impact to effect quick removal thereof. As described in connection with the thimble shown in Figs. 4 and 5, a nut may be applied to the axle in spaced relation to the unit to be ulled to prevent its being jerked fi theaxle.
A similar device is shown in Fig. 7, this being a threaded nut adapted to be used in the pullng of wheels fairly easily removed and provided with exteriorly threaded hubs. This device comprises a nut member 50 provided with a mongol threaded aperture of the diameter of the hub of the wheel to be pulled. The fmongol thread enables the nut to fit any usual thread of whatever type,
5 found upon members of a diameter corresponding to that of the aperture. This nut is provided with two bifurcated extensions 51 in the embodiment shown, adapted to receive members to connect the nut to the bifurcated portions of the cross-member15 (Fig. 3). Upon such assembly of the parts the rod 10 may be run into tensioning position and the wheel pulled either with or without the use of a pull-ofif stop-nut appl'ed to the J axle as above described.
It is obvious from the foregoing descri tion that the combination device provided by our invention is particularly flexible n its application and may be employed in the removal of almost any type of art cle which can be reached by the arms 16 or any other type of arms or en aging means which may be provided with t e tool or constructed on the spot to fit thepart'cular job to be done. The arms provided with the tool may even bent into difierentforms in order to reach for such special purposes.
articles difiicult toremove because of interferring structure, and it is clear from the foregoing description that our dev'ce may in which a pulling operation is required, by the provision of accessory wits to adapt it be emplo ed for a large variety of specialjobs in a dition to the general run of work,
ile it is pref-.
3,4, 5 and herein, it is clear from the. orei going descriptionthat unsymmetrically ar ranged engaging means-may= be .associated with our combination pullerto adapt it for o erations which require such means for t e"r performance. a 1
It is .thus clear that our invention ma be embodied in other specific forms wit out departing fromthe essential attributes there'- of, and we therefore desire the present de-. tailed description to be considered in all respects as illustrative and not restrictive.
We claim as our invention:
1. An article pulling tool comprisin a rodthreaded for a substant al part of its fength, a head on said rod adapted to receive. a wrench, a cross bar through which said rod is adapted to be screwed article engagingarms plvotally and reversibly secured to, said; cross bar, said threadedrod being adapted to'be screwed down into engagement with a surface w'th respect-to which the article-is .to be pulled to exert an initial tension onsaid article and hold the tool in axial ;alignment with the direction of pull, and a weight slidably'mounted on sad rod and adapted to be manipulated against said head with sudden force to augment saidinitial tension at the.
moment of impact, and thereby exert a cumu' lative stress to cause movement; of said artlcle. Y
2.-. A. combination uller comprsing a puller rod provided with a head at one end-- .threaded area providing for. mo:vement of said rod said rod through sa d memberto move its-end into engagement with an abutment associated with thearticle to be pulledtohold said pulling rod in pro er a ignment therew th whereby impact 0 said hammer withsaid, head is transmltted symmetricallgeand in. pnoper alignment to the article. to V 3. A combination puller comprising .a rod .pulled.
having an extended threaded-area at one end, and provided at its other endwith a wrench.
receivin head; a member throughwhich-said rod is a 'u'stably threaded to enable it to'be;
set up t erethrought said member .being formed to receive, in symmetrical-relation to said'rod.,means for securingthe pullert on said .rod to. impact said1head a sudden pulling shock to said rod.
the article tobe. moved; and means slidable fc pe y ea.
scribed comprising article englgin'gai'xus, a
co cti g t t which-sa d? a rawoted in symmetrical relationto .its eentenga rod lon 'tudinally adjustable through said center 0 said connecting bar, a head on said rod adapted to receive a wrench for settingup sald rod in use of the device, and a member slidable on said rod against said head with a hammer effect to apply a sudden shock longitudinall of said rod for symmetrical distribution y said arms to the article engaged thereby.
5. A combination puller comprising article engaging arms having hooked ends.
formed to maintain engagement with the article to be pulled, a connectin bar on which said arms are pivotally and reversibly mounted, a rod t readed through said bar and adapted to engage against a surface to hold said uller in ali ment with the direction in w ich the article is to be pulled and with its arms engaged with the article, a head on said rod rovi'din means facilitating the turning o? said ro into such surface engagin position, and a weight slidably mounte on said rod and adapted to forcibl en age said head to exert a sudden,
proper y a igned pulling shock on the article to be moved.
6. A combination puller comprising a rod threaded throughout a substantial portion of its length, a hammer slidable on said. rod,
a head carried by said rod to be impacted by said hammer, and means adapted to enga e an article to be pulled and provided with a tdireaded aperture extending in the direction of pull and formed for adjustable engagement with the threaded portion of said r0 to provide for setting up said rod against an abutment in use of the device as a preliminary to manipulation of said hammer.
7 A combination puller comprisingv a rod threaded throu hout a substantial portion of its length, a ammer slidable on said rod, a head carried by said rod to be impacted by said hammer, and means adapted to engage an article to be pulled and provided with a threaded a rture extendin in the direction ofvpull an formed for a justable on agement with the threaded portion of sai rod to provide for setting up said rod against an abutment in use of the device as a prel minary to manipulation of said hammer, the abutment engaging end of said rod beln provided with a contacting end of reduce area to avoid Fmeandering of said end during settin up of the same against said abutment. 8." E combination pul er comprising a rod threaded throu hout a substantial portion of its length, a ammer slidable on said rod, a head carried by said rod to be impacted by saidhammer and means adapted to be secured to a wheel-hub to bepulled and provided with a threaded aperture positioned to align with the axle from-which the hub is to be pulled and formed for ad ustable enentwith the threaded portion of said I whereby initial pulling stress may be .gaged with the article,
viding means facilitating the turn1ng o f said rod into such surface engagmg positlon, a
applied by adjustment of said threaded rod hammer on said head,
i 9. A combination puller comprising a rod threaded throughout a substantial portion of its length, a hammer slidable on said rod, a head carried by said rod to be impacted by said hammer, and a thimble adapted to be secured to a wheel-hub to be pulled and provided with a threaded aperture positioned to ali n with the axle from which the hub 15 to e pulled and formed for adjustable engagement with the threaded portion of said rod, whereby initial pulling stress may .be applied by adjustment of said threaded rod and augmented by 'dislodging blows of said hammer on said head. a
10. A combination puller comprising a rod threaded throughout a substantial portion of its length, a hammer slidable on said rod, a
head carried by said rod to be impacted by secured on said axle in spaced relation to the hub to be pulledtherefrom to prevent jerking of the hub entirely' from the axle.
1.1. A combination puller comprising a rod threaded throughout a substantial portion of its length, a hammer slidable on said rod, a head carried by said rod to be impacted by said hammer, and a thimble ada ted to be secured to a wheel-hub to be pulle and provided with a threaded aperture positioned to align with the axle from which the hub is to be pulled and formed for adjustable enga ement with the threaded portion of said ro whereby initial pulling stress may be applied by adjustment of said threaded rod and augmented by dislodging blows of said hammer on said head, and a stop nut adapted to be secured on said axle in spaced relation to the hub to be jerking of the ub entirely from the axle, said thimble being formed to provide for access to said sto nut.
12. A combination puller comprising article engaging arms havmg hooked ends formed to maintain engagement with the article to be pulled, aconnecting bar on which said arms are pivotally and reversibly mounted a rod threaded through said bar and adapted to engage against a surface to hold said puller in alignent with the direction in which the article is to be pulled and with its arms ena head on said rod proulled therefrom to prevent.
p 6 a I i 1,898,414
weight slidably mounted on said rod and adapted to forcibly engage said head to exert a sudden, proper y aligned pulling shock on the article to be moved; said arms being shaped to present normally inclined cam surfaces between their ends and their points of connection to said connecting bar, and a cam member removably mountable on said rod and when mounted thereon cooper- 10 able with said cam surfaces to pivot said arms into article engaging position when advanced by threading of said rod through said connecting bar, said cam surfaces and removable cam-member thus providing for convertin the tool to facilitate its employment witfi work presenting no surface engageable by said rod as aforesaid.
13. A combination puller according to claim 12 in which said rod is provided with an end projection of reduced cross-section and presents 'a shoulder at the juncture of said projection and the threaded portion of the rod, and in which said cam-member is provided with 'an aperture of a size to slidmgly fit said end projection, whereby the removable mounting of said cam member onsaid rod may be' effected by placing it over said end projection and into engagement with said shoulder, said cam surfaces being so inclined that said arms are pivoted into article enga 'ng position by pushing of said cam mem r away from said connecting bar by said rod, whereb said loosely mounted camnember will not come disengaged from said 5 end projection in use of the tool with said cam member mounted as aforesaid.
In testimony whereof, we have signed our names to this specification.
. PHILLIPS H. CLARKE. HARVEY P. JOHNSON.