US2958123A - Tools for assembling retaining rings on shafts, pins or the like - Google Patents

Tools for assembling retaining rings on shafts, pins or the like Download PDF

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Publication number
US2958123A
US2958123A US742135A US74213558A US2958123A US 2958123 A US2958123 A US 2958123A US 742135 A US742135 A US 742135A US 74213558 A US74213558 A US 74213558A US 2958123 A US2958123 A US 2958123A
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US
United States
Prior art keywords
slide
ring
stack
tool
rings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US742135A
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English (en)
Inventor
Erdmann Hans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Waldes Kohinoor Inc
Original Assignee
Waldes Kohinoor Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Waldes Kohinoor Inc filed Critical Waldes Kohinoor Inc
Priority to US742135A priority Critical patent/US2958123A/en
Priority to CH7287559A priority patent/CH373721A/de
Priority to BE579637A priority patent/BE579637A/fr
Priority to CH437460A priority patent/CH381182A/de
Application granted granted Critical
Publication of US2958123A publication Critical patent/US2958123A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/20—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same inserting or withdrawing split pins or circlips
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53613—Spring applier or remover
    • Y10T29/5363—Circular spring

Definitions

  • FIG. 8 TOOLS FOR ASSEMBLING RETAINING RINGS ON SHAFTS, PINS OR THE LIKE Filed June 1e, 195s 4 sheets-sheet 4 FIG. 8
  • Retaining-ring dispensing and applying tools are in common characterized by an applicator blade having a substantially semi-circular ring-receiving cut-out which opens through its front edge whereby it is adapted to fork a ring being assembled, which cut-out is normally closed or backed on one side by a retractible slide, and by a iiexible stack rod extending toward the open side of the ring cut-out for holding a lplurality of open retaining rings to be assembled in stack 'formation and for feeding the rings one at a time to ⁇ die Acut-out responsively to assembly of the endmost ring" of the stack in a shaft groove.
  • such 'a stack rod has its end adjacent the cut-out free to ex responsive to movement of the tool toward the shaft, as necessary to an assembly operation being unimpeded by the lower rings of the stack.
  • the invention contemplates and aims to provide a combination retaining-ring dispensing and applyingtool for assembling Vsuch retaining rings on grooved shafts, Apins or .the like featuring a retracting slide Patented Nov. l, 1960 Fice and flexible stack rod as used in the tools disclosed in my aforesaid prior applications, but which is characterized in that the retracting movement of the slide in no wise depends on the slide abutting the shaft-holding xture or the machine part to be located on the shaft by the ring being assembled.
  • an object of the invention is to provide a combination ring dispensing and applying tool for assembling open retaining rings on shafts, pins or the like in a position immediately adjacent the machine part to be located thereon by the lring being assembled, thereby to avoid end play between machine part and ring, and which is eifective regardless of the radial dimension of said machine part.
  • Another important object of the invention is the provision of a combination ring dispensing and applying tool as aforesaid which, while employing the retracting slide feature of my prior tools, is nevertheless so constructed and arranged that the slide partakes of its retracting movement responsively to -ilexng movement of the stack rod, as results from engagement of one or more of the lower rings of the stack thereof disposed above the ring being assembled with the shaft as the tool moves toward the latter in carrying out a ring-assembly operation.
  • a more detailed object of the invention is the provision, in a combination retaining-ring dispensing and applying tool as aforesaid, of a slide suitably constructed and mounted so as to ably and effectively carry out its novel operation as intended by the present invention.
  • Figs 3, 4 and 5 are broken-away part-sectional plan views, on an enlarged scale, of the working part of the tool according to the invention, showing three stages of its operation in assembling a ring in its shaft groove, of which Pig. 3 shows the tool approaching the shaft and gliding over the end face of a machine part located immediately adjacent the shaft groove, Fig. 4 shows the ring about half-way assembled in its groove and with the slide'partially retracted, and Fig. 5 shows the ring fully inserted in its shaft groove and the slide fully retracted relative to the applicator blade;
  • Figs. 6, 7 and 8 are vertical sections corresponding to Figs. 3-5, respectively, of which iFig. 6' is a section taken along oset section line 6 6 of IFig. 3, !Fig. 7 is a section taken along line 77 of Fig. 4, and Fig. 8 is a section taken along line l8-8 of Fig. l5; and
  • iFigs 94112 are, respectively, top, side, bottom and front or head-on views of the working portion of the applicator blade and slide which illustrate in detail the construction and arrangement thereof.
  • a tool of the invention illustratively comprises as its basic elements a frame 10, a stack rod ⁇ 15, an applicator' blade 20, and a retractible slide 30.
  • the frame 10 comprises a body part 11 in the form of a horizontally elongated, verticallygdisposed main wall, ⁇ and top and bottom walls 12, 1,3 extending to one side (forwardly) therefrom and terminating in oppositely reaching side flanges 12a and 13a.
  • the frame 10 which is thus channel-shaped is adapted to serve as a tool handle and preferably the forward end of its top wall 12 terminates in a thumb rest 14 which facilitates the t frame being manually grasped and handled.
  • a stack-rod mounting bracket 16 Secured to the under side of the handle top wall 12 is a stack-rod mounting bracket 16 preferably in the form of a strip arranged on edge and being secured along its top edge, the aforesaid stack rod i15 being affixed to the lower edge of the bracket 16.
  • the stack rod 15 is adapted to dispose a plurality of open retaining rings R to be assembled in orderly stack formation and uniformly oriented so that the gaps between the open ends of the rings always face or open towards the front or workpiece side of the tool.
  • such rings are usually provided along their inner edges with a middle and two end lugs or projections whose arcuate inner edges define the effective inner edge of the ring.
  • the stack rod 15 as is conventional, comprises a spring strip or rail having width corresponding substantially to the inner-edge diameter of the arcuate bodies of the rings R.
  • the relatively forward end of the stack rod 15 is bent to extend downwardly and substantially at -a right angle to its rail-attached horizontal portion, and it terminates just short of the working end 21 of the applicator blade which is horizontally disposed.
  • the lower-end portion of the stack rod is free of securement and, being of flexible spring metal, it is free to ex relatively rearwardly a limited amount when rings thereon disposed above the lowermost or endmost ring then -being assembled engage the shaft during the assembly operation, whereby said lower rings do not impede in any way the requisite movement of the tool to its full assembly position with respect to the shaft.
  • ring-feeding means are provided, such comprising a follower slide 17 engaged with and slidable along the stack rod in manner similar to the rings R, said slide being urged in direction as to feed the rings toward the free or applicator-blade end of the stack rod by means of a tension spring 18 reactive between the slide and a fixed point on the handle 10.
  • a tension spring 18 reactive between the slide and a fixed point on the handle 10.
  • the applicator blade 20 is also carried by the handleforming tool frame 10 as by atxing one end thereof to the upper surface of the frame bottom wall 13 adjacent the forward end of the latter. From its xed end, the blade slopes downwardly and then emerges into its aforesaid horizontal working portion 21 which extends immediately below the free end of the stack rod 15. Thus, the free or working end of the stack rod and the working portion 21 of the applicator blade have rightangular relationship generally as shown.
  • the working portion of the applicator blade is of bifurcated construction providing two laterally spaced, longitudinally extending arms 22a, 22b, and in the illustrated blade the space between said arms is closed by a bottom wall 23 aflixed by welding or otherwise to the under sides of said arms.
  • the forward edge of said bottom wall 23 is curved so as t define a substantially semi-circular ring-receiving recess 24 opening through the front end of the applicator blade, the edge of which forms a ring-pushing edge which at least in its middle portion is deepened as by a longitudinal strip-form shim 23a secured as by riveting to the under face of the bottom wall.
  • the aforesaid side arms 22a, 22h of the blade extend along the sides of the cut-out 24, and one arm 221; reaches forwardly thereof and is shaped to provide a tool-to-groove guide finger 25 disposed at the level of said cut-out.
  • the other arm 22a is shown to terminate at its forward end in an inclined end edge 26 which has minimum spacing from the guide finger end of the companion side arm 22h at least equal to the outer-edge diameter of the rings R being assembled.
  • the under surface of the arm adjacent said edge 26 is undercut or relieved to provide an under-face recess which is also disposed at the level of the cut-out, said recess terminating rearwardly in an inclined edge 26a which is parallel to and spaced from the edge 26 the approximate depth of the shoulder which an assembled ring forms on the shaft to which it is assembled.
  • the aforesaid retractible slide 30 mounted on the working end of the applicator blade illustratively comprises a top plate of U-configuration providing two spaced arm portions 31, 32 which extend forwardly from a middle portion 33, said top plate overlying and being supported on the arms 22a, 22h of the applicator blade and further extending over the side edges of said applicator-blade ⁇ arms and thence inwardly as in-bent under flanges 34, 35.
  • said in-bent iianges 34, 35 extend in opposite directions across the under face of the applicatorblade bottom wall 23 to approximately the shim 23a carried by said bottom wall, and thus the shim acts as a longitudinal key for the slide as a whole.
  • said in-bent flanges 34, 35 are adapted, in the forward or active position of the slide 30, to in etfect form a bottom wall for the cut-out 24 of the applicator blade, from which position, by virtue of its slidable mounting on said applicator blade, the slide is free to retract a limited amount in rearward direction.
  • the inner side edges of the arm portions 31, 32 and the forward edge of the middle portion 33 of the slide top-plate define a generally rectangular, forwardly facing opening therein which is wide and deep enough to accommodate rings R of the stack thereof disposed on the stack rod 15.
  • slide top plate to the rear of its aforesaid ring-stack opening is formed with an upright flange or finger 37, and it will be ob.
  • the slide is positioned in its aforesaid forward or active position (Figs. 3 and 9) by means of a leaf spring 38 having one end axed to the handle frame 10 and its free end bearing against the rear face of the finger 37 so as to bias the slide in forward direction.
  • Figs. 5 and 8 which illustrate the relation of parts with the ring fully assembled on and before retraction of the tool from the shaft S, here it will be s'een that the lower end of the stack rod has been flexed a substantial distance in rearward direction and that such movement has resulted in corresponding rearward movement of the slide 30 along the length of the applicator blade to its full inactive position.
  • the stack rod 15 returns to its normal position in which it moves the ring stack to axial alignment with the cut-out 24, as results in the previously next endmost ring dropping into the cut-out, wherein it now assumes the assembly-readiness position.
  • This movement of the stack rod is accompanied by return movement of the slide 30, under the bias of leaf spring 38, to its active position in which its bottom flanges 34, 35 re-close the bottom side of the cut-out, thus not only to prevent the ring moving into the assembly-readiness position therein from dropping through the cut-out, but also to bottom the entire ring stack, as in Figs. 3 and 6.
  • a ring dispensing and applying tool as aforesaid achieves in simple yet effective manner the objectives of the invention as explained in the foregoing. More particularly, although using the desirable retractible slide feature of the tools of my prior applications aforesaid, a tool of the invention overcomes the objections and limitations of the prior tools resulting from the requirement thereof that retracting movement of the slide be obtained by engagement of its front end with an abutment such as a shaftholding fixture or the machine part to be located on the shaft.
  • the present invention the flexing movement of the stack rod, which occurs during each assembly operation, to retract the slide and thus movement of the slide is not only greatly facilitated, but also is made possible without any precise machining or dimensioning of the machine part to obtain such 'slidemoVethe scope of the invention, it is intended that all matter contained in the foregoing description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
  • a tool for dispensing open retaining rings and for applying them to grooved shafts, pins and the like comprising, in combination, an applicator blade and a stack rod for maintaining a plurality of the open rings to be assembled in column formation and uniformly oriented with respect to one another and being operatively connected to the applicator blade in such manner that the tool is
  • a tool for dispensing open retaining rings and for applying them to grooved shafts, pins ⁇ and the like and being actuable solely by bodily movement of the tool toward and away from the shaft comprising, in combination, an applicator blade having la substantially semicircular ring-receiving cut-out in its working-end portion which opens through the end edge thereof, a stack rod at least a portion of which is disposed substantially at a right angle to the applicator blade and extends toward and terminates just short of said cut-out for maintaining a plurality of open retaining rings to be assembled in substantially coaxial alignment with one another and with said out-out and for holding said rings uniformly oriented so that their openings face in the same direction as the cutout, the end of the stack rod remote from the cut-out being rigid with the applicator blade and the end of said stack adjacent the cut-out being free of securement and of flexible construction whereby it can ex rearwardly when force is applied thereto by some of the rings thereon being pushed rearwardly by the shaft on which

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US742135A 1958-06-16 1958-06-16 Tools for assembling retaining rings on shafts, pins or the like Expired - Lifetime US2958123A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US742135A US2958123A (en) 1958-06-16 1958-06-16 Tools for assembling retaining rings on shafts, pins or the like
CH7287559A CH373721A (de) 1958-06-16 1959-05-04 Werkzeug zum Montieren federnder Sicherungsringe
BE579637A BE579637A (fr) 1958-06-16 1959-06-12 Perfectionnements apportés aux outils pour engager des baques de retenue fendues et élastiques sur des pièces cylindriques.
CH437460A CH381182A (de) 1958-06-16 1960-04-18 Werkzeug zum Montieren federnder Sicherungsringe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US742135A US2958123A (en) 1958-06-16 1958-06-16 Tools for assembling retaining rings on shafts, pins or the like

Publications (1)

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US2958123A true US2958123A (en) 1960-11-01

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US742135A Expired - Lifetime US2958123A (en) 1958-06-16 1958-06-16 Tools for assembling retaining rings on shafts, pins or the like

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US (1) US2958123A (de)
BE (1) BE579637A (de)
CH (1) CH373721A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6212746B1 (en) 1999-10-27 2001-04-10 Hill-Rom, Inc. Retaining ring installation apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1073280A (en) * 1912-03-22 1913-09-16 Herbert W Owen Tool for applying travelers to rings.
US1596698A (en) * 1924-08-16 1926-08-17 Sandt William Von Pencil sharpener
US2781515A (en) * 1953-03-30 1957-02-19 Senco Products Staple feed magazine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1073280A (en) * 1912-03-22 1913-09-16 Herbert W Owen Tool for applying travelers to rings.
US1596698A (en) * 1924-08-16 1926-08-17 Sandt William Von Pencil sharpener
US2781515A (en) * 1953-03-30 1957-02-19 Senco Products Staple feed magazine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6212746B1 (en) 1999-10-27 2001-04-10 Hill-Rom, Inc. Retaining ring installation apparatus

Also Published As

Publication number Publication date
CH373721A (de) 1963-11-30
BE579637A (fr) 1959-12-14

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