Патент USA US2411980код для вставки
Dec. 3, 1946.‘ ‘ c. RINGWALD 2,411,980 ELECTRODE HOLDER Filed Sept. 25, 1943 ' 2 Sheets-Sheet 1 _ INVENTQ . TTORNEY. - Dec. 3, 1946. c. RINGWALD 2,411,980 ELECTRODE HOLDER ‘Filed Sept. 25, 1945 2 Sheets-Sheet 2 INVENT R. WTTORNEY. Patented Dec. 3, 1946 r 2,411,980 UNITED STATES PATENT OFFICE 2,411,980 ELECTRODE HOLDER Clarence Ringwald, Spring?eld, Ohio Application September 25, 1943, Serial No. 503,735 20 Claims. (01. 219-8) 1 This invention pertains to electric welding ' having relatively few parts, and be unlikely to equipment, and more particularly to an elec trode holder or welding rod clamp for adjust get out of repair. A further object of the invention is to provide ably holding a welding rod and conveying elec an insulating encasement for the operating tric current thereto while it is being used. CR parts of the holder, which does not materially While for illustrative purpose, but with no increase the size or weight of the device, and intent to unduly limit or restrict the scope or which affords maximum protection aaginst elec application of the invention, it is herein shown tric shock and burns, and which is easily and and described as embodied in an electrode holder or welding rod gripper of ‘the inter-pivoted clamp jaw type, it is to be understood that it is not limited thereto, but features of the present disclosure are readily applicable to holders of readily removable and replaceable for inspection and repair 10 ing casing. other construction or style. of parts, and renewal of the insulat A further object of the invention is to provide an insulating encasement, at the surface of which no metallic parts or attachment screws In performing welding operations, the oper 15 will be exposed through which accidental cur ator’s eyes being protected by goggles, or his rent leakage might occur or shock be su?ered. head being enclosed in a protective hood, his A further object of the invention is to provide range of vision is restricted, and in moving the a ventilating system of air spaces and passages welding rod holder about, the rear end or nor and ventilating ports for circulation of air about mally inactive terminal of the electrically the metallic parts for cooling purposes and the charged rod may accidentally come into contact dissipation of heat. with the work at a point other than at the weld, A further but none the less important feature or may contact some other body, in which event is the provision of an insulated stop and pro the rod may become welded fast at such point, tector for the rear or normally inactive end of or damage result. 25 the welding rod to prevent accidental direct The rod holder elements being directly con contact thereof with the work or operator, or nected in the electrical energizing circuit, and with some other conductive body. being quite close to the welding operation, de A primary object of the invention is to pro velop quite high temperatures. It is therefore desirable that the various electrically charged . parts be electrically and thermally insulated. In the present instance there is contemplated an insulating encasement for the charged me tallic parts of the holder, which not only pro tect against contact therewith and electric shock and burns, but which also provides air spaces and passages and ventilating ports through which atmospheric air may readily circulate for cooling the metallic parts and dissipation of gen— erated heat. The insulating encasement not i only protects the welding rod holder parts, but also protects and forms a stop for the rear end vide maximum insulative protection against electrical shock and grounding, and against heat and also maximum air cooling of the heated parts. With the above primary and other incidental objects in view as will more fully appear in the speci?cation, the invention intended to be pro tected by Letters Patent consists of the features of construction, the parts and combinations thereof, and the mode of operation, or their equivalents, as hereinafter described or illus trated in the accompanying drawings. In the accompanying drawings, wherein is illustrated the preferred but obviously not neces sarily the only form of embodiment of the in of the rod, which prevents accidental contact thereof with the work or another grounded body. The insulating encasement also prevents short 45 vention, Fig. 1 is a perspective view of an assembled circuiting or current leakage, and accidental welding rod holder embodying the present in welding of the holder to a support when laid vention equipped with a detachable hand guard down during idle intervals. or shield. The object of the invention is to improve the Fig. 2 is a further perspective View thereof in construction as well as the means and mode of 50 operation of welding electrode or rod holders, - somewhat different position with the hand shield whereby they may not only be economically removed. manufactured, but will be more ef?cient in use, Fig. 3‘is a side elevation, partly broken away, safe in operation, compact in form, of relatively of the assembled rod holder. light weight, easily operable to release the rod, 55 Fig. 4 is a side elevation, partly broken away, 2,411,980 of the rod holder assembly with the insulating encasement removed. Fig. 5 is a bottom plan view with a portion of the insulating encasement broken away. Fig. 6 is an end elevation of the assembled holder. Fig. 7 is an end elevation of the terminal of 4 material is straight and of a convenient size to serve as a handle for the rod holder. Enclosing the forward portion of the main frame l and the stationary jaw 22 is a cutaway continuation it of the sleeve l8, which may be integral there with, but is preferably a separable section. The forward or terminal portion of the insulating the main body. ' section 19 is cut away at one side from the top Fig. 8 is a transverse sectional View showing to approximately the horizontal diameter of such the relation of the insulating material and the 10 continuation or forward insulating section iii to welding rod, the end of which is protected expose the jaws 2 and 13 at one side, as shown in thereby. Figs. 1, 2, 3 and 5. This enables the welding rod 5 to be inserted and adjusted from such side only. At the opposite side the arcuate wail of the Like parts are indicated by similar characters 15 insulating section it continues upwardly almost throughout the several views. to the vertical diameter of the circular insulating Referring to the drawings, i indicates the me section. Thus, the latter side of the insulating tallic frame member or main body, terminating in section encloses the opposite side or the jaws 2 the stationary clamp jaw 2, to which is pivoted and 15 and overhangs and protects the end of at 3 a movable clamp jaw 4. The movable jaw 20 the welding rod 5, for which this arcuate wall 4 is .oifset somewhat relative to its pivotal point of the insulating section as forms a stop. This 3. The working face of the stationary jaw 2 is prevents the rear end 5’ of the welding rod from longitudinally and transversely grooved, as at accidently contacting the work or other body, or 2' and 2”, to provide selective seats for the being contacted by the hand of the operator. At welding rod 5. The working face of the mating 25 the top of the insulating section ill and rear jaw ll is beveled at 5' to agree with the longi wardly oi the cutaway portion there is a longitu tudinal seat groove 2’ of the lower jaw 2. The dinal slot in the top thereof through which the medial portion of the main body i is longitudi jaw insulating block H projects. The differen nally-slotted at G to reduce the bulk of material, tial shapes of the metallic main frame l and the and with it the weight or" the holder, and to pro 30 interior of the cylindrical insulating sections 58 vide an air chamber through which atmospheric and is aiiords an intermediate air space 2?} be air may circulate for dissipation of radiated heat. neath the jaw 2 and main frame l which com The terminal ‘5 of the main member is somewhat municates with the air space S in the body of enlarged and is provided in its periphery with the member !, and also provides lateral air spaces longitudinal spaced grooves 8, affording air pas 35 2: which communicate with the bottom space , sages interiorly of the insulating encasement here 28 and with the air space '6. These air spaces Fig. 9 is a detail view of a detachable hand guard. after described which lead to the air space 5. The enlarged terminal 1! is bored and threaded 28 and M and the space 6 of the main body also communicate with the interior of the handle with a tapered thread to receive a correspond section it about the cable is}, through the pas ingly threaded coupling 9 of an electrical con 40 sages 8 in the periphery of the terminal l. ductor cable it. The bottom of the insulating section i9 is pro Overlapping the top and rear end of the oscil vided with a series of air ports 22 through which latory clamp jaw ii is a block ll of insulating atmospheric air may enter the spaces 26, 2E and material ‘which is securely attached to the jaw G for circulation about the heated metal parts by countersunk screws la. Additional screws for cooling the latter and dissipating the heat. i3 secure a channel shaped handle lever ill to To protect the section it from being burned by the insulating block 5 i and hence to the movable heat radiated from the point of welding 01 er jaw 1i.- A helical tension spring I5 is positioned ation, a shield 23 is preferably attached to the within the slot or air space 6 of the main member section it in parallel exterior spaced relation l, with one end thereof hooked about a cross pin therewith beneath and to the rear of the cut-1 5% extending therethrough, and its other end ll away portion. The relative spacing of this shield. seated in a socket or bore in the rear end of enables circulation of air in the space interme the insulating block H. The spring is thus ex diate the shield and the insulating section. Such cluded from the electrical circuit and does not auxiliary shield protects the insulating mate receive current and heating of the spring is mini rial from being burned by the intense heat gen mized. The spring 15 is of su?icient tension to erated during the welding operation, and espe~ forcibly close the jaws 2—-—'.l upon an interposed cially when a shortened rod is being used close welding rod 5 to securely hold the latter in its to the holder. The guard prevents charring and adjusted position. The length of the handle lever disintegration of the-insulating material. Being Ill and its relation to the pivotal center 3 is such 60 supported on the insulation independently of the that minimum eifort is required to open the jaws main body l and clamp jaws, the shield 23 is against the yielding resistance of the spring to not electrically charged and will not shock or release the welding rod. weld fast upon contact. To protect the operator against shock and The insulating sections it and i5 being of burns, and prevent accidental contact of charged 65 cylindrical form readily retain their positions parts with the work or other conductor bodies to about the metallic parts, but to prevent displace .. which the metallic parts might unintentionally ment are secured by screws 23 inserted there become welded, the main frame member I and jaw are enclosed in an insulating encasement, through into the main body l. The walls of the insulating casing are relatively thin. However which preferably, but not necessarily, comprises 70 separable sections. As illustrated, a cylindrical tubular section it‘ surrounds the rear portion or the frame member 5 together with the terminal 2’ and coupling ii and a contiguous portion of the electrical cable it. This sleeve ‘l8 of insulation 7 such screws are countersunk therein. To pre ventaccidental contact with the heads of such screws, and shock to the operator or grounding of the implement, ‘a contractively tensioned split sleeve 25 of insulating material is slidably mount ed upon the insulating sections !8 and I9 and 5 2,411,980 may be shifted to and fro into and out of over lying relation with the screw heads where it is retained by friction. 6 fording a ventilating space, a complementary spring in?uenced clamp jaw pivoted to said mem ber, an insulating block secured to the pivoted clamp jaw, an operating lever secured to the in as shown in Fig. 2 without a hand guard or shield, 5 sulating block for retracting the pivoted jaw but readily accommodates itself to the addition of against the in?uence of its spring influence, a such guard, which may be interposed between the tubular sleeve of insulating material enclosing the adjacent ends of the insulating sections I8 and assembly of the elongated member the clamp jaws [9 by retracting the former. Such guard may and cable connection, affording a handle there ' The section encasement l8 and I9 may be used comprise a simple disc or collar 26 of insulating 10 for, open at its end and one side to afford access material or of metal with a bushing of insulat to the jaws for insertion of a welding rod and ing material which may be adjusted to position surrounding the main body I and abutting the end of the insulating section 19, after which the enclosing the jaws at the opposite side thereof to protect the rear end of the welding rod against contact with extraneous objects. insulating section [8 is advanced into thrust en 15 3. An electrode holder, including an elongated gagement therewith to clamp the guard between member, an integral clamp jaw at one end there the adjacent ends of the insulating sections. In of, a coupling for an electric cable at the oppo lieu of such collar the guard may be slotted .to site end thereof, the member being slotted inter enable it to be inserted transversely of the mem mediate the clamp jaw and cable coupling, a her I into position intermediate the ends of the 20 complementary clamp jaw pivoted thereto, an sections [8 and [9. In Fig. 1 the guard 26' is actuating spring for the pivoted clamp jaw posi shown as of L shape, comprising a sheet metal tioned within the slot of the main member, with extension attached to the primary collar or bush~ one end engaging with said member, an insulator ing of insulating material 26. This guard is re attached to the pivoted jaw with which the other movable or replaceable at Will, and serves to pro 25 end of the spring is engaged, and an actuating tect the operator’s hands and clothing from lever for the pivoted jaw attached to the insu sparks and metal particles which may fly from lator. the point of welding operation. 4. An electrode holder, including a pair of in From the above'description it will be appar .terpivoted clamp jaws, a support therefor, a cou ent that there is thus provided a device of the : pling for connecting an electric cable with the support, a housing of insulating material enclos-' character described possessing the particular ing the‘ said assembly, having a cutaway portion features of advantage before enumerated as de sirable, but which obviously is susceptible of modi affording access to one side only of the clamp ?cation in its form, proportions, detail con jaws for reception of a welding rod, and a pcr~ tion of the insulating material housing at the struction and arrangement of parts without de opposite side of the jaws affording a limiting parting from the principle involved or sacri?cing any of its advantages. stop for one end of the welding rod, protecting While in order to comply with the statute the the latter against accidental contact with an ex invention has been described in language more traneous object. 5. An electrode holder, including a pair of or less specific as to structural features, it is to be understood that the invention is not limited to clamp jaws, a support therefor, a coupling head for an electric cable, a cylindrical tubular insu the speci?c features shown, but that the means lating housing enclosing the assembly having a and construction herein disclosed comprise the cutaway portion affording access to one side of preferred form of several modes of putting the invention into effect, and the invention is there 45 the clamp jaws, the other side of the clamp jaws being enclosed within the housing, and air ‘pas fore claimed in any of its forms or modi?cations within the legitimate and valid scope of the ap sages intermediate said assembly and the wall of pended claims. the tubular housing for circulation of atmos pheric air to dissipate generated heat, the insu ‘ Having thus described my invention, I claim: lating housing having ventilating openings 1. An electrode holder, including an elongated therein communicating with the air passages. member, an integral clamp jaw at one end of 6. An electrode holder wherein an electric said member, a connection for an electric power welding rod is detachably engageable with a piv cable at the other end of the member, the mem oted jaw gripping device including an insulating her being longitudinally slotted intermediate the clamp jaw and the cable connection, a comple 55 member forming a stop for the rear end of a welding rod engaged by the pivoted jaw of the mentary clamp jaw pivoted thereto in cooperating gripping device and preventing electrical contact relation with the clamp jaw portion of said mem ber, an insulating block attached to and movable of the rear end of the rod with extraneous objects the construction and arrangement being such with the pivoted clamp jaw, an operating lever that the welding rod is engageable with the piv attached to the insulating block and insulated oted jaw gripping device independently of the in from the pivoted clamp jaw, a spring member lo sulating material in universally adjustable rela cated within the slot of ‘the elongated member and attached thereto at one end and engaged tion to the gripping device. 7. A tube of insulating material to receive elec with the insulating block at its opposite end, and tric welding rod engaging devices and an electric a tubular sleeve of insulating material enclosing said elongated member and pivoted clamp jaw cable connection therefor, open at an end and having a cutaway portion through which the in cut out at one side to enable insertion of a weld sulating block extends and affording access to ing rod into the rod engaging devices, including a portion overlapping the rod engaging devices at the clamp jaws. 2. An electrode holder, including a relatively 70 the side opposite said cutout to protect the in straight elongated member, a stationary gripper serted end of a welding rod against electrical con jaw at one end thereof, a detachable electric cable tact with extraneous objects. 8. An electrode holder wherein a welding rod connection at the opposite end, an opening in the is detachably engageable with a rod gripping de member intermediate the jaw and cable connec tion, reducing the weight of the member and af~ 75 vice with which an electric cable is also engage 2,411,980 7 able, including a housing of insulating-material enclosing the rod gripping device ‘and/a cable con nection, having an access opening through which a welding rod is engageable with the device and an insulating portion of said housing extending into overlapping relatiOn with the rear end of a welding rod when engaged therewith, to ‘limit the extent to which the rod may be inserted relative to the gripping device and protecting the rear end of the rod against electrical contact with ex traneous objects. 9. An electrode holder wherein a welding rod is detachably engageable with a rod gripping device of the interpivoted jaw type to which an electric cable is also engageable, including a tubular - 8 14.‘ An electrode holder wherein a welding rod is releasably engageable with a gripper unit to which an electric cable is detachably connected, including a cylindrical tubular housing of insu lating material enclosing the unit and having a cutaway portion a?ording access to the unit for engagement of a welding rod therewith, and a limiting stop portion‘at the side of the unit oppo site such cutaway portion overlapping and pro tecting one end of the engaged welding rod. 15. An electrode holder wherein a welding rod is releasabiy engageable with e, gripper unit to which an electric cable is detachably connected, including a cylindrical tubular housing of insu lating material enclosing the unit and having a cylindrical insulating housing therefor of sub cutaway portion affording access, to oneside of stantially uniform diameter throughout, com the unit for engagement of a welding rod there prising an uninterrupted portion thereof sur with, and air passageways intermediate the unit rounding and enclosing the point of engagement and the housing for circulation of air for dissi of the electrical cable with the rod gripping de 20 pating generated heat. > vice and forming a handle grip therefor, and a 16. An electrode holder wherein a welding ,rpdv terminal portion thereof common to the interpiv is releasably engagcable with a gripper unit to oted jaws of the gripping device in partially sur which an electric cable is detachably connected, rounded relation therewith slotted only at one including a cylindrical tubular-housing of insu side to afford access to the gripping device and 25 lating material enclosing'the unit and having a limit the rearward extension of the welding rod. cutaway portion affording ‘access to the unit ‘for 10. An electrode holder, including a pair of in engagement of a welding rod therewith, and ‘a terpivoted clamp jaws of polygonal cross section, limiting stop at the side of the unit opposite such a cylindrical tubular housing of insulating mate cutaway portion overlying and protecting one rial common to both the jaws and of substantially end of an engaged welding rod, said tubular uniform diameter throughout enclosing the jaws housing comprising separable sections arranged in relatively spaced relation a portion of which is end to end, and a guard member interposed be cut away to aiford access to the jaws at one side only thereof, and intervening air passages within the housing and about the jaws intermediate the polygonal'faces of the jaws and the cylindrical vwall of the housing for dissipating ‘generated tween the sections. - g , 17. An electrode holder, wherein a welding red is detachably gripped between a pair of relatively adjustable jaws, to which an electric cable is con nected, including an insulating housing enclosing heat. the jaws at one side thereof to a?ord a stop for 11. An electrode holder, including an elongated an end of the welding rod, to protect it from con member, a stationary clamp jaw at one end there 40 tact with extraneous objects, the housing being of, a cable coupling for an electric power cable at shaped to expose the opposite side and the ends the opposite end, the member having therein an of the jaws for insertion of the welding rod elongated transverse slot intermediate the sta therebetween. tionary clamp jaw and the cable coupling form 18. An electrode holder, wherein a weldingrod ing a vertical air passage therethrough, a spring is detachably engageable between a pair of rela actuated clamp jaw pivoted to said member, an tively adjustable jaws to which an electric cable actuating spring located within said slot of the is connected, including a housing of insulating elongated member and exerting yielding pres material enclosing the assembly of jaws and cable sure upon the movable jaw, an operating lever for connection, comprising relatively adjustable sec the movable jaw, an insulating housing enclos tions, a portion of which ‘forms a handle grip, ing the assembly, and air passages within the and an L shaped guard member having an open housing communicating with said slot of the elon ing in one arm thereof, ‘through which the jaw gated member. and cable connection may be extended with said 12. An electrode holder, including a main arm of the ‘guard positioned intermediate suc member, an integral clamp jaw at one end there 55 ceeding sections of the insulating housing and of, .a detachable coupling for anelectric cable at held in adjusted position thereby, ‘and with ‘the the other end of the member, a spring actuated other arm of the guard extending in overlapping complementary clamp jaw pivoted to said mem parallel spaced relation with the handle grippore her, a housing of insulating material enclosing tionof the housing. said member and clamp jaws, having a cutaway 60 19. An electrode holder, wherein a welding rod portion affording access to one side only of the is engageable with a rod gripping device with clamp jaws, a portion of said housing at the op which an electric cable is also detachably_engage posite side of the jaws aifording a ‘limiting stop able, including an insulating housing enclosing for the end of a welding rod engaged bythe jaws. the rod gripping device having an opening for 13. An electrode holder, including an elongated 65 insertion of a welding rod-into said gripping de main member, a, stationary clamp jaw formed at vice, and a guard member attached in spaced‘re one end thereof, a detachable coupling for an lation to the exterior of the insulating vhousing electric cable at the opposite end thereof, said adjacent. the said opening, and an air space member having an opening therein intermediate formed intermediate the guard and the insulating the stationary jaw and the cable coupling, a housing, protecting the material. of the latter spring actuated complementary clamp jaw piv oted to the member, an insulating housing en closing the said assembly and an air passage lead ing through the housing from atmosphere to the opening and thence through said opening. from the in?uence of heat atthepointof welding operation. , 20. An electrode holder, including an elongated member, an integralclarnp jaw atone endjhere of, a connectionfor an electric cable atethe oppo 2,411,980 10 site end thereof, a longitudinal slot therein inter mediate the jaw and cable connection, a comple mentary clamp jaw pivoted to said member, an operating lever therefor insulated from the piv oted jaw, a housing of insulating material enclos ing said assembly, having an access opening for mosphere for circulation of air therethrough to dissipate heat, a hand guard associated with said housing and extending laterally thereof, and a guard relatively spaced from said housing form insertion of a welding rod between said jaws, air the point of welding operation. passages Within said housing connecting the 1on gitudinal slot in said elongated member with at ing an air passage therebetween to protect a por tion of the housing against the effect of heat at CLARENCE RINGWALD.