Патент USA US2113087код для вставки
April`5, 1938. ' J. JENSEN 2,113,087 MANUALLY OPERATED PRESSURE TOOL Filed Ap'ril 1o, 1937 _EEE 7`, 2 , çfITToQJ ¿ys r 2,113,087 Patented Apr. 5, 1938 l UNITED STATES >PATENT OFFICE 2,113,081MANUALLY OPERATED PRESSURE TOOL John Jensen, Rockford, Ill., assignor to Whit ney Metal Tool Company, Rockford, Ill., a cor poration of Illinois Application April 1o, 1937, serial No. 136,151 s claims., (ci. 14o-113) The invention relates to manually manipulable pressure-tools such as splicing tools for wire, sheet metal shears, punches, and the like. The general object of the invention is to pro vide an improved device of the class described ’ which includes a free-running antifriction gear `ing capable of extremely large force multiplica tion. _ . , A more specific object of the invention is to 10 provide an improved splicing tool adapted to effect preferably includes a pair of relatively movable jaws which may be detachably secured together on opposite sides of the dies- to form a strong rigid support during the splicing operation and which may then be swung to open position to facilitate` ready removal of the spliced wire. Thus, upon reference to Fig. 1, it will be seen that the die I0 is dovetailed in a supporting block I6 slidably mounted on wear >plates I‘I-I8 in a U-shaped yoke I9 forming one supporting jaw while the die l0 a pronounced ñow of metal in the connector sleeve II is dovetailed on the face of a second jaw or in clamping the same to the associated wires. link 20 pivotally connected to one oi’ the arms of the yoke I9 by a pivot pin 2|. The yoke I9 has Further objects and advantages oi’ the inven a base plate I9“ formed on the lower side thereof tion will become apparent as the following de 15 scription proceeds and -the ‘ features of novelty which may be utilized to secure the same in posi which characterize the invention are pointed out> tion. The supporting block I6 for the die I0 is V_with particularity inthe claims annexed to and forming a part of this speciflcatlon. For a better understanding "of the invention reference may be had to' the accompanying draw -0 ing in which . restrained against sidewise movement through splined connections formed by ribs v22 and 23 on the inner faces of the arms of the yoke I9 fitting within complemental grooves in the wear plates I1 and I8, respectively. A detachable connection ' 20 Figure 1 is a side elevation partly in section 'of ' between vthe upper end of the link 20 and yoke I9 is formed by a second link 24 pivoted at its inner end in the bifurcated end of the upper yoke Fig. 2 is an enlarged fragmentary vertical trans arm by a pin 25 and secured to the-link 20 by v25 verse section along the line 2-2 in Fig. 1. 25 Fig. 3 is an enlarged fragmentary vertical a removable slip pin 26. It will thus be seen that when the link 20 is swung to the vertical transverse section along the line 3-3 in Fig. 1. Fig. 4 is an enlargedy fragmentary »horizontal position shown in Fig. 1 andthe slip pin 26 inserted into the registering openings in links 20 transverse section along the line 4-4 in Fig. 1. Referring more particularly to the drawing, the and 24, a strong rigid support is formed for the 30 30 invention in its exemplary embodiment has been dies Ill--I I. After the die forming operation has shown for purposes of illustration as applied to been completed the slip pin 26 may -be removed and the link 20 rotated in a counterclockwise di a’portable wire splicing tool having a pair of co rection to facilitateeasy removal of the spliced , operating mating dies Ill-II for clamping suc cessi've portions of a tubular connectorv I2 about wire. Upon reference to Figs. 1 and vit will be 35 the abutting ends oi’ wires I3-I4 (Fig. 4). It seen that the dies I0 and II are respectively held a splicing tool embodying the invention. . will be understood by those _skilled in the art, how ever, that mechanisms embodying the invention> may also be adapted for a wide variety oi' other 4 O forms of dies and metal forming tools as well as other devices. The mechanism herein illustrated in position- against lateral displacement by die retaining clips 21 and 28. ' . Y ' The antifriction- gearing I 5 is adapted to se lectively move the die I0 toward and away from 40' the die I I and comprises in general a pair of tele includes in general a supporting structure for the scoping members havingaseries of balls engag tremely heavy pressure on the dies, this- pressure members comprise a rotatable spindle 29 and a dies III-II and a'novel form of antifriction gear- . ing both members tov form the equivalent of a >ing designated generally by the numeral> I5 which smooth running screw thread therebetween. In , the particular construction illustrated these 45 45 may be manually manipulated to-exert-an ex being of the order lof -35 tons or more. >The par- , ticular form of dies illustrated is adapted to `carry out an improved method of wire splicing tcffash 50 ion a novel form of splice. Neither thëifmethod ` of forming this splice nor the completed article forms anypart of theA 'present invention but is ' described and claimed in my copending applica tion Serial No. 149,414 ñled June 21, 1937.' 55 _ The supporting _structure for the dies Ill-II telescoping sleeve`30 positioned in a cylindrical housing`3| formed in the base of the yoke I9. A dog screw 32 (Fig. 2) bearing against a iiattened surface 33 formed on the side of the sleeve 30 50 prevents rotation- of the sleeve in: the housing. Complemental spiral grooves 34‘ an'd 35 are formed on the adjacent surfaces of the spindle ' 29 and sleeve 30, resrïctively, and are adapted to receive a‘seriesl of balls 36. 'I'he balls thus posi .Y 2 2,113,087 tioned in the spiral grooves formed in the sleeve and spindle constitute a free running antifr-ic end of the spindle. It will be noted upo'n refer ence to Fig. 4 that the upper one of the cap screws tion equivalent of a screw thread between these 46 also serves to hold the die retaining clips 21 in telescoping members. Annular end plates 31 and position. As the spindle 29 is rotated by a suit 39l having graphite packings 39 and 49 therein >able manual operating handle 43 connected are detachablyl secured to opposite ends of the sleeve 3|! and prevent the entrance of dirt or other foreign matter into the- screw mechanism. An annular shoulder 30'L in the` housing 30 abuts 10 against an annular flange 3i* on the sleeve 3| to prevent outward movement of the sleeve. , In accordance with one aspect of the present invention, an improved arrangement is provided for preventing jamming pf the balls 36 as they approach the ends of the spiral grooves during the rotation of the spindle 29. In general, an ar rangement is preferably provided for ejecting'the balls as they approach one end of one of the spi ral grooves and returning them to the opposite 20 end thereof. Thus, upon reference to Figs. 1 and 3, it will be seen that as the spindle 29 is rotated in'a clockwise direction (as viewed in_Fig. 3) the ' balls 36 are « directed upwardly from the spiral grooves -34 and 3,5 by the curved inner face 4I of 25 a dog 42 into a transfer passage 43. This trans fer passage is- formed by a groove in the upper side of the sleeve 30, its upper side being closed by the housing 3i. The dog 42 is illustrated in the form of a pin inserted in the sleeve 30 and 30 arranged generally tangentially to the base of the spiral groove 34 formed inthe spindle 29. As the thereto by a socket 49 the die supporting block I6 and its attached die I9 are thus moved to ward or away from the cooperating die II, de pending upon the direction of rotation of the spindle. 10 In the operation of the _mechanism described above. the tubular connector sleeve blank »I2 is slipped over the adjacent ends of wires I3 and I4 which are to be spliced together and the con nector is then positioned between the dies III-_I I. The link 20 is swung to its vertical position shown in Fig. 1 and the slip pin 26 inserted ’so as to maintain -the"dies in alinement during the clamp ing operation.' The die I9 is then moved toward the die I I to bring the same into clamping engage ment with the connector sleeve I2 by rotating the manual operating handle 49. It will be noted that upon reference to Fig 4 that the active faces of the dies III-II are adapted to cover only a relatively small portion of the length of the con 25 nector sleeve so that the clamping operation is repeated a number of times throughout the length of the sleeve in order to clamp it in position on the wires. Inçview `of the antifriction gearing arrangement utilized it is possible to exert an extremely heavy pressure'of the order of 35 tons rotation of the spindle continues, the balls move ' or more on the dies even though the mechanism is merely manually manipulated. As a conse quence, a substantial flow of metal in the con _nector sleeve may be effected so that a verystrong splice is had. In fact, v'it has been found that ’ when using such a mechanism with properly through the transfer passage 43 to the outer end thereof from which they are directed by a second 35 dog 44 (Fig. 2) having a curved- inner face 45, >back into the cooperating spiral grooves. When the spindle 29 is rotated in the opposite direction the balls progress through the spiral grooves and back through the transfer passage 43 in the op v40 posite direction. It will thus be seen that a _smooth free running equivalent of a screw thread is had in which the possibility of jamming ofthe balls at the end of the spiral tracks which carry . them is obviated. 45 - Y , An arrangement ofthe type described in which the balls in the spiral grooves areprevented from jamming by ejecting the same at theend of their path of travel in .the grooves is particularly adapted for .use in a splicing tool such as that 60. herein disclosed or other devices in which the re-> tractive movement of the operating members is shaped dies, a splice can be formed which has a tensile strength greater than that of the wires which are joined together. 40 „ Although a particular' embodiment of the in vention has been shown and described in some detail for purposes of illustration, there is no intention to thereby limit the invention toy this particular embodiment but, on the other hand', the 45 appended claims are intended to cover all modi fications within the spirit and scope `oi? the inven-V tion. . ` . I claim asîmy invention: 1. IA splicing tool device of the class described comprising, in combination, cooperating relatively movable metal forming compression die members, not- impeded by the work piece. Thus, in the splicing tool hereinbefore described, the die I6 -screw means associated-with said metal forming. may be freely retracted after compressing the members for exerting an extremely heavy clamp connector sleeve I2 without sticking vdue to its, ing pressure thereon by manual manipulation in 55 contact with the sleeve. As a result,'there is no cluding two members arranged in telescoping re-"` jarring effect on the balls 36 which -would cause lation with each> other and a series ~of balls en them to -be loosened. Consequently, they are gaging both of said telescoping’members to form likely tobecomemjammed'vand Aiiattenedafter con#> 60 tinued use if some arrangement’is not provided for ejecting them from the Aend of their path of travel in the spiral grooves. In the case of punch presses and similar mechanisms, however, - _the retractive movement of the punch or die is 65 impeded by its‘frictional contact with the metal throughwhich it is passed so that it pulls free with'a jerk. This uneven movement ordinarily the equivalent of a smoothly running screw thread therebetween,~ at least one of said telescoping- 00 members having a spiral groove therein receiving said balls, and means for ejecting the balls from between. saidtelescoping members as they ap- . preach the ends of said groove to prevent jam ming thereof. 65 2. A splicing tool device of the class described comprising, in combination, cooperating relatively serves to loosen the balls in the spiral grooves so movable metal forming compression die members, that in such instrumentalities it is frequently screw means associated with said metal forming unnecessary to use such an ejection arrangement as is herein set forth. , v The inner end of the spindle 29 is operatively - connected to the supporting block >I6-for the die . I9 by a pair of cap sci’ews 46 fitted in opposite 75 sides of an annular groove "formed in the inner members for exerting an extremely heavy clamp 70 ing pressure thereon'by manual manipulation in cluding two members arranged in telescoping re lation with each other anda series of balls engag ing both of said telescoping members to form the equivalent of a smoothly running screw thread 75 2,118,037 therebetween, lat least one of said telescoping members having a spiral groove therein receiving said balls, and means including a transfer pas Asage disposed exteriorly of said groove for shift ing the balls from one end of said groove to the other to prevent jamming thereof. l 3. A portable splicing tool for compressing a generally tubular connector about the abutting ends of a pair of wires to be spliced, comprising> in combination, a pair of mating dies adapted to receive a `portion of the connector therebetween, a yoke having its arms disposed on opposite sides , . ` .3 l of one of said dies to form a sliding support therefor, a link pivotally connected to one of the arms of said yoke and forming a support for the other of said dies, and screw means associated - pressure with said thereon dies for by manual exerting manipulation a strong clamping to cause . a substantial iiow of metal in the connector includ ing two members arranged in telescoping rela tion with each other carried by,said yoke and a series of balls engaging both members to form v10 l the equivalentof a screw thread therebetween. JOHN JENSEN.