Патент USA US2412594код для вставки
De@ 17» i946. .Lv E. ANToNlDas y 2,412,594 JIG BUSHING Filedy May 28 , 1945 Ag’ Z ÉNVENTOR. 2,412,594 Patented Bec. 17, 1946 UNITED STATES PATENT OFFICE. 2,412,594 JIG BUSHING James E. Antonidis, Chicago, Ill., assignor to Master Machine & Tool Company, Chicago, Ill., a corporation of Illinois Application May 28, 1945, Serial No. 596,279 10 Claims. 1 This invention relates in general to a new bush ing for drills, reamers, and the like, although it may have a more general use wherever appli cable. An important object of the invention is to- pro vide a removable handle for attachment close to one end of a bushing by means of which the bushing may be inserted and removed from oper (Cl. 77-62) 2 in engagement by a removable snap spring re movably seated near one end of the bushing. Referring now more particularly to the draw ing, a bushing S is designed and intended to receive drills, reamers, and other mechanical de vices for accurately positioning them with respect to a support or the work for which it is intended. As represented in Fig. 2, a work support 'I has a sleeve 8 in which the jig bushing is inserted. ative position. Near one end of the bushing is an outwardly A further object of the invention is to provide 10 projecting shoulder 9 which limits the insertion an improved handle of relatively light material of the bushing into the sleeve 8 with a notch having a strengthened offset for displacing the iii extending through the projecting portion of hand hold portion from the plane of the work the shoulder. Beyond the shoulder the bushing so that it may be easily engaged. A further object of the invention is to provide 15 is formed with a neck Il around which may be fitted the apertured end l2 of a handle i3 adapted a light-weight handle which is easily locked in to rest against the shoulder thereof. place against relative rotation with respect to Around the bushing neck is formed a groove I4 the bushing. adapted to receive a split locking spring l5 which Still a further object is to provide a bushing of this kind with a notched edge for attaching 20 is snapped in place over the end of the bush ing. The thickness of the spring ring may be it in a fixed work position and for easily dis slightly less than the arcuate width of the groove engaging it therefrom when desired. I 4 whereby it is free to lie slightly to one side Still a further object of the invention is to thereof and bear- downwardly upon the upper face provide a bushing having a locking spring with an easily engageable extremity for removing it, 25 of the apertured end or perforated portion l2 of the handle to hold the latter tightly in posi and the spring being so proportioned that it tends tion against the shoulder 9. to seat the handle tightly against the bushing. The handle which is preferably made of metal, Other objects of the invention will appear in is formed with a lip i6 turned downwardly from the specification and will be apparent from the the apertured end to engage in the notch I0 accompanying drawing in which, of the bushing shoulder, thereby providing an Fig. 1 is a top plan view of a jig bushing in interengaging lock for holding the handle and accordance with this invention; the bushing against relative rotation. The handle Fig. 2 is a sectional view showing the bush is preferably formed with an offset connecting ' ing and its connection with the handle; the outer hand hold portion i1 and its apertured Fig. 3 is a fragmentary detail in section, show ing the bushing neck, handle end, and locking ring therefor; and end I2, the offset portion comprising opposite angular bends I3 and I9 in the angular por tions of which are indentations 2Q to form the Fig. 4 is an end View showing the bushing opposite strengthening ribs 2 I. In the outer hand in elevation as applied to a support. hold portion, a small perforation 22 may also 40 In operatively placing and removing a bush be provided for hanging the bushing upon a suit ing of this kind, it is desirable to have a handle removably attached near the upper end and en gaged with the bushing to prevent relative rota~ tion. The handle should be light and strong and able support. At one end of the snap ring is a hook or pro jection 23 which extends outwardly from the end of the bushing to provide means for receiving it should extend outwardly away from the Work engagement from a» tool to facilitate removal so that the bushing may be easily applied or of the ring from the bushing when it is desired removed, and provision should also be made for to disengage the handle therefrom. engaging the bushing or the handle to hold the In order to tightly hold the bushing in any bushing ñrmly in any fixed position, and also to 50 ñxed position, a lock screw 24 may be provided having a lower threaded portion 25 adapted to permit a quick disengagement of the bushing be inserted in a threaded hole in the support out if it is desired to remove it from the work. side of the sleeve 8, the screw being formed with In the present invention, the above objects are an unthreaded portion 26 adjacent an enlarged attained by providing a novel form of handle which interlocks with the bushing and is held 55 head 2l so that the head will engage over the 2,412,594 3 4 edge of the apertured end I2 of the handle. By threading the screw inwardly, it will hold the bushing tightly in place. In order to make the bushing easily removable from the work support without entirely removing the holding screw 24, the edge of the apertured end l2 of the handle lock the handle and bushing together against rel ative rotation. is provided with a curved notch 28 through which the enlarged head 27 of the screw' is free 6. A jig bushing having an outer shoulder ad jacent one end forming a work positioning sup port, an offset handle therefor having a perfo rated portion to engage over the end against the outer side of the shoulder and a hand hold por tion connected to the perforated portion by an~ gular bends having indented edges forming oppo to pass after thebushing and its handle have been rotated to the point where the one is in 10 site strengthening ribs, and means for securing register with the other. the perforated portion of the handle against the With this construction, the bushing may be easily raised, lowered, rotated, engaged, or dis gaged with respect to the handle, and held in place by locking means which engages the han dle. The handle itself is both light and strong, shoulder. 7. The combination with a jig bushing and a support to which it is applied, of a shoulder near the end of the vbushing to limit its insertion into said support, and a handle having a perforated portion inserted over the end of the bushing against the outer side of the shoulder, an outer and it is olTset with respect to its attachment to the bushing so that the bushing may be readily hand hold portion oiîset from the perforated por applied, removed and operated without the hand of an operator or the handle itself being any 20 tion to space it from the support, means to rein force the handle portions in the offset, yielding obstruction to the bushing. means for holding the handle on the end of bush While a preferred construction is thus particu ing against the shoulder, and interengaging larly described, various changes in the structure, combination and arrangement of parts may be means on the shoudler and handle to prevent their made without departing from the spirit and scope 25 relative rotation. 8. The combination with a jig bushing and a of the invention. support to which it is applied, of a shoulder near I claim: the end of the bushing to limit its insertion into l. A jig bushing in combination with a handle and means for resiliently securing the bushing to said support, and a handle having a perforated the handle, said means comprising an outer 30 portion inserted over the end of the bushing shoulder near the top of the bushing, the handle against the outer side of the shoulder, an outer having an opening for seating it against the hand hold portion oiïset from the perforated por shoulder, the bushing having a groove of arcu ate cross section adjacent the top and above the handle when seated against the shoulder, and a spring ring having a thickness less than the arcuate width of the groove seated therein and bearing against the top of the handle. 2. The combination with a jig bushing having tion to space it from the support, means to rein force the handle portions in the olïset, yielding means for holding the handle on the end of bush ing against the shoulder, and means to lock the bushing in the support comprising a headed lock screw insertable in the support with its head to engage over the outer edge of the handle portion, 40 and the outer edge of the handle portion having a rounded notch through which the head of the screw will pass when it registers with the notch. against the shoulder, and a spring holding ring 9. A bushing having an outer shoulder near engageable in the groove, the ring having a thick one end, an olîset handle having a perforated _ness less than the width of the groove to press 45 portion to fit over the end against the shoulder, an outer shoulder adjacent one end and a round ed groove nearer the end, of a handle having an opening to iit over the end of the bushing and yieldingly against the top of the handle, means for locking the handle against rotation with respect to the bushing, resilient means for shoulder adjacent one end and a rounded groove retaining the handle in locking position, and the between the shoulder and the end of the bush outer edge of the perforated portion having a ing, a handle having a portion with an opening 50 notch through which the head of a work locking 3. In combination, a bushing having an outer to ñt over the end of the bushing and against the screw will pass when the bushing and handle are shoulder` and a split spring holding ring seated rotated to register therewith. in the groove to engage the said handle portion and having o-ne end of the ring projecting from the bushing for engagement of a tool therewith. 4, The combination with a bushing having an outer shoulder adjacent one end with an outer 10. The combination wth a jig bushing and a support to which it is applied, of a shoulder near the end of the bushing to limit its insertion into said support, and a handle having a perforated portion inserted over the end of the bushing groove nearer the end and a slot through the against the outer side of the shoulder, an outer shoulder, of a handle therefor having an open hand hold portion offset from the perforated por ing to fit over the end of the bushing against the 60 tion to space it from the support, means to rein shoulder and a lip engaging in the shoulder slot, force the handle portions in the offset, yield and a spring ring seated in the groove and en ing means for holding the handle on the end of gaging the outer face of the handle adjacent the bushing against the shoulder, a headed locking opening. screw inserted in the support at the side of the 5. A jig bushing having an outer shoulder ad bushing to engage over the edge of the perforated jacent one end, a handle having a perforated handle portion for holding the bushing in place, portion to fit over the end of the bushing against and the handle portion having a notch in its outer the shoulder and a hand hold portion offset from edge through which the head of the screw will pass the perforated portion, means at the outer end of when they are rotated by the handle to register the bushing to resiliently engage the perforated 70 with each other to remove the bushing without portion of the handle, and engaging means to removing the screw. JAMES E. ANTONIDIS.