US2884685A - Tool for preparing and applying wires to terminals - Google Patents

Tool for preparing and applying wires to terminals Download PDF

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Publication number
US2884685A
US2884685A US550029A US55002955A US2884685A US 2884685 A US2884685 A US 2884685A US 550029 A US550029 A US 550029A US 55002955 A US55002955 A US 55002955A US 2884685 A US2884685 A US 2884685A
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United States
Prior art keywords
bit
wire
piston
sleeve
tool
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US550029A
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English (en)
Inventor
John R Bos
Robert B Shulters
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Gardner Denver Inc
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Gardner Denver Inc
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Priority to BE546307D priority Critical patent/BE546307A/xx
Application filed by Gardner Denver Inc filed Critical Gardner Denver Inc
Priority to US550029A priority patent/US2884685A/en
Priority to DEG19223A priority patent/DE1089029B/de
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/033—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for wrapping or unwrapping wire connections
    • 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
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5187—Wire working

Definitions

  • the present invention relates generally to making a connection between a wire and an electrical terminal and more particularly to a tool for effecting such a' connection by winding the wire in successive convolutions about and in intimate engagement with the terminal.
  • Tools of this general character conventionally include a rotary shaft or bit which is disposed Within a sleeve member, the bit being provided at its forward end with a longitudinal recess for the reception of the terminal and a radially offset longitudinal groove for the reception of the wire.
  • the bit is rotated and the wire is wound about the terminal, the wire being withdrawn longitudinally from the groove as it is applied to the terminal.
  • the external sleeve member is reciprocable manually relative to the bit and, as an incident to forward movement of the member, it coacts with the bit to strip the wire of its insulation.
  • Means may also be provided which is operable upon such movement to cut the wire to length as well as to separate the insulation therefrom.
  • a more particular object resides in the provision in a tool of the aforesaid general character of power operated means for reciprocating the sleeve member with respect to the bit and for rotating the bit and sleeve, such operation being sequential so that the insulation isv irst separated and then the conductor of the -wire is wound about the terminal, it being withdrawn from the separated insulation during the winding.
  • a related object of the invention is to provide a single control member for the application of power to the device so as toyeffect the aforesaid sequential operation.
  • a further, object comprises including means operable upon interruption. of the application of power tothe tool for returning the reciprocable sleevev member to its initial position, with; a special provision to guide the bit and sleeve member into the same angular position relative to the tool axis. as it was originally.
  • Figure l is a front elevation of a power operated tool embodying the features of thepresen-t invention.
  • Fig. 2 is a longitudinal section taken in offset planes as indicated by the lines 2-2 in Fig. l;
  • Fig. 3 is a section taken substantially in the plane o line 3--3 in Fig. 2;
  • Fig. 5 is a fragmentary detail view the tool mechanism shown in Fig. 2;
  • Figs. 6 and 7 are sections taken along lines 6-6 and 7*-7 in Fig. 2;
  • Fig. 8 is a fragmentary longitudinal section of the forward end of another illustrative form of the present invention.
  • Fig. 9 is a diagrammatic View representing the developed length of the cam element of the modied form of Fig. 8.
  • this illustrative tool includes a housing ⁇ 10 which is equipped withy a pistol-grip type handle 12 mounting a trigger-like finger piece 14 by meansof which power supplied to the tool is controlled.
  • the exemplary tool is adapted for actuation by pressure tluid such as compressed air, althoughv it is not intended that the invention be limited thereto.
  • pressure tluid such as compressed air, althoughv it is not intended that the invention be limited thereto.
  • pneumatic motor 15 of the rotary, extensiblevane type.
  • the housing 410 isl formed of thel three parts, the aforesaid rear portion 10a, a front cap 10b, and an intermediate generally cylindrical portion 10c.
  • the tool terminatesv in a nose assembly, generally designated 18, which includes a wire winding bit disposed within a forwardly projecting sleeve 21.
  • the exemplary tool incorporates suitable speed reduction gearing indicated generally atA 22' and a clutch mechanism 23 for couplingy the; tools motor to the bit 20.
  • tlie bitV 20 is provided with a longitudinalrecess 24 forthe reception of a ⁇ terminal about which a WireW (Fig. 2) is to be wound in contiguous helical convolutions so as to effect an electrical connection therebetween.
  • the bit is provided with a wire receiving groove 2S.
  • the groove is formed in the bit adjacent the outer end thereof and is disposed in radially offset relation tothe recess 24, extending longitudinally in the peripheral surface of the bit.
  • the wire W is withdrawn from the groove 25 as it is wound about and in intimate engagement with a terminal received in the recess 24*l
  • the illustrative tool' incorporates.
  • the bit 20 and the sleeve 21 are especially formed to of a portion of permit side loading of the wire W, as distinguished from is a section taken along line 4--4 in Fig. 2;v
  • the bit and sleeve are constructed and arranged so that the wire W can be loaded into the tool by simply laying it across the bit, subsequent manipulation of the components of the tool causing the wire to be prepared and automatically positioned in the wire receiving groove 25 of the bit 20 for application to the terminal.
  • the sleeve 21 is mounted for relative longitudinal or reciprocable movement with respect to the bit between a normally open or loading position and a forward position wherein the contiguous inner surface of the sleeve closes the wire receiving groove to retain the bared conductor C of the wire W therein.
  • the forward end portion of the bit is exposed so that the wire W can be laid across the transverse bit surface 26.
  • the wire is caused to be directed outwardly toward the wire receiving groove 25.
  • the forward or leading edge of the sleeve 21 is utilized in cooperation with the forward end portion of the bit 20, in which the groove 25 is formed, and especially that portion thereof that defines the rear end of the groove 25 to cut the insulation I at a point spaced from the end of the wire W and separate the cut portions of the insulation.
  • the wire receiving groove 25 is sized in transverse dimension to receive the conductor C of the wire W, i.e., the groove 25 is complementally formed with respect to the bared conductor C. It will be recalled from the foregoing description herein that upon forward movement of the sleeve 21 from its rearmost or loading position, its forward end 28 engages the wire W and moves it outwardly along the bit toward the open rear end of the wire receiving groove 25.
  • the wire receiving groove corresponds in transverse dimension to the diameter of the conductor C, the wire W with the insulation I thereon is prevented from dropping into the groove 25.
  • the inner edge 30 of the sleeve 21 upon continued forward movement of the sleeve, bites into the insulation I, and forces that portion of the insulation immediately ahead of this edge forwardly.
  • such continued forward motion of the sleeve 21 tends to force the wire W into the rear end of the wire receiving groove 25.
  • Fig. 2 that by relieving the bit 20 at 31 the forward end thereof is provided with a rear surface 32 disposed transversely of the bit. This construction provides the rear end of the wire receiving groove 25 with relatively sharp edges.
  • the groove is dimensioned to receive only the conductor C of the wire W, the forcing downward of the wire W into the rear end of the groove, upon forward movement of the sleeve 21 with respect to the bit 20, causes the side yedges to cut the remainder of the insulation I and leaves the forward end of the severed portion of the insulation in engagement with the transverse rear face 32 of the forward end of the bit. Additional forward movement of the sleeve 21 will, therefore, cause complete parting of the thus severed insulation.
  • the severed end portion of the insulation abuts the transverse face 32 of the forward end portion of the bit 20 and is thus held against forward movement as the sleeve 21 continues to move forwardly. Further by virtue of its engagement with the wire W just ahead of the insulation cut, the sleeve 21 carries the wire W forwardly with it. As a result the trailing portion of the conductor C of the Wire W is withdrawn from the severed portion of the insulation I and at the same time 1s pulled along the wire receiving groove 25 until the sleeve 21 reaches its forwardrnost position (not shown).
  • the wire W is thus fully prepared for application to the terminal when the latter is inserted in the terminal receiving recess 24 of the bit 20.
  • the conductor C is withdrawn forwardly or outwardly through 4 the wire receiving groove 25. In so doing the trailing end portion of the conductor is fully withdrawn from the severed portion of the insulation I since the latter is held back by its engagement with the transverse rear face 32 of the bit.
  • the illustrative nose assembly is also constructed for cutting the wire W that is loaded into the tool to a predetermined length.
  • Such length is determined, in general, by the amount of wire required in the formation of a predetermined number of convolutions of the wire to be placed about a terminal in effecting connection of the wire to the terminal.
  • a pair of relatively movable cutting edges are provided which are disposed to cross one another in the movement of the sleeve 21 with respect to the bit 20, so as to shear the wire.
  • one of the cutting edges is iixed with respect to the bit 20 and the other is fixed with respect to the sleeve 21.
  • the sleeve 21 has mounted thereon adjacent its rear end a collar 40 which is longitudinally slotted as at 41 to bee with its ⁇ forward transverse face a cutting edge 42.
  • the cutting edge 42 is disposed for cooperation with a cutting edge 43 formed along the upper rear side of a pin 44 which is lxed with respect to the bit 20 and projects generally radially therefrom through an elongated longitudinally disposed slot 45 formed in the sleeve 21.
  • the edge 43 is formed by chamfering the rear face of the pin 44 so that the edge extends outward and rearA Ward from the bit 20.
  • This construction disposes the edge 43 whereby the cutting edge 42 of the collar 40 traverses it progressively from its outermost end toward its innermost end as the collar 40 moves forwardly with respect thereto in the forward movement of the sleeve 21.
  • the collar 40 is fixed in place upon the sleeve 21 by means of set-screws 51.
  • set-screws 51 By merely loosening the set-screws the sleeve may be readily removed, a convenience to permit resharpening of the cutting edge 42 provided on the sleeve.
  • pin-in-slot construction serves to guide longitudinal movement of the sleeve 21 with respect to the bit 20 and prevents any relative rotary movement therebetween.
  • the illustrative tool incorporates an improved construction and arrangement of components including a power actuated motive and drive assembly for both moving the sleeve member 21 between a retracted position, wherein the forward end of the bit 20 is exposed to receive the insulated wire, and a forward position wherein the forward end of the member traverses the forward end of the bit to cut and separate the insulation of the wire and additionally for rotating the bit 20 and the sleeve member 21 to wind the wires bared conductor C about a terminal.
  • a power actuated motive and drive assembly for both moving the sleeve member 21 between a retracted position, wherein the forward end of the bit 20 is exposed to receive the insulated wire, and a forward position wherein the forward end of the member traverses the forward end of the bit to cut and separate the insulation of the wire and additionally for rotating the bit 20 and the sleeve member 21 to wind the wires bared conductor C about a terminal.
  • the power ⁇ actuated motive and drive assembly incorporates means for advancing and retracting the sleeve member with respect to the bit 20.
  • the intermediate portion 10c of the housing 10 is formed as a cylinder 55, 1ongi tudinally reciprocable within which is a piston 56.
  • a piston 56 is of generally cylindrical form and mounts as its front end aC-washer 58.
  • the C-washer 58 is provided with a radially opening slot 58a within which is journaled collar 40 and the bit 20, the collar being peripherally grooved adjacent its rear end to ⁇ interiit with the C-washer.
  • the piston 56 is provided at its rear end with appropriate O-ring gaskets 61 for engagement with the inner wall of the cylinder of the housing portion 10c and with the outer surface of a barrel 60 which extends coaxially Within the housing portion 10c.
  • the nose 18 of the housing portion 10b is provided with an opening 62' of sufficient size to accommodate the collar 40 and permit free relative longitudinal movement thereof.
  • the rearwardly facing transverse groove surface of the collar 40 abuts the forward tace of the C-washer 58 and, as previously noted the collar is retained in position upon the sleeve 21 by set-screws 51. It will be seen therefore, that admission or uid under pressure to the cylinder causes forward movement of the piston 56 in the housing 10c, and forward movement of the collar 40 and sleeve 21 relative to the bit 20 for cutting a wire laidl across the bit', and stripping the insulation therefrom.
  • an adjustable connection between the C-washer 58 and the piston 56 is provided.
  • oblique slots are formed in the wall of the piston 56 adjacent the forward end thereof for receiving screws 72 (Figs. 4 and 5), which are threaded into tapped holes 73 in the C-washer 58.
  • screws 72 are loosened and the C-washer 58 is angularly adjusted with respect to the walls of the piston 56 to permit alternative location of the screws 72 along the slots 70 and thus of the C-washer longitudinally with respect to the piston.
  • the rest position of the piston 56 corresponding to the returned or retracted position oi the collar 40 and sleeve 21, isl determined by the abutment 74 within the housing portion 10c.
  • the extent of forward longitudinal movement of the piston 56I in the housing is determined by a stop sleeve 75 disposed within and adjacent the forward endy of the intermediate housing portion 10c.
  • sleeve 75 may be made of plastic or relatively soft metal as desired and can be replaced as might be necessitated by wear.
  • the illustrative device is intended for actuation by pressure uid such as compressed air.
  • compressed air is supplied to the instant tool from any suitable source (not shown) to a supply passage 80, formed in the handle 12 of the tool, by way of the air line 57.
  • a supply passage 80 formed in the handle 12 of the tool, by way of the air line 57.
  • the supply passage communicates with a supply chamber 81.
  • the supply of pressure uid from the supply chamber 81 to the cylinder 55, for advancing the piston 56 therein, is under the control of a valve indicated generally at 83.
  • the valve 83 is of the poppet type and includes a body or stem 84 which is longitudinally shiftable within a bushing 85.
  • the stem 84 is relieved, as at 86, so as to dene with the bushing S5 a valve chamber 87.
  • the valve body mounts a head 88 which carries a suitable sealing gasket or O-ring 89 for seating engagement with the inner end of the bushing to interrupt the ow of pressure uid from the supply chamber 81 to the valve chamber 87.
  • the valve bushing 85 is of reduced diameter adjacent its inner end to define with the bore in the handle 12 in which it is received an annular chamber 90.
  • the valve bushing 85 is suitably ported as at 91 to communicate with the chamber 90 and 75 thence by way of ay port 92 with the cylinder 55 behind theL piston 56.
  • valveV is. normally urged towards closed position by the action of pressure uid in the supply chamber 81 on the head 880i the valving element. Communication between the supply chamber 81 and the cylinder 55 by way of the valve chamber 87, ports 91, chamber and passage 92, is established by depressing the trigger 14 soy as to move the valving element from its seat as defined by theA annular inner end of the valve bushing 85. It will be seen in Figs. 2 and, 3 that the outer end of the valve body 84 projectsforwardly from the outer end of the valve bushing 85 and engages the rear side of the trigger 14.
  • the piston 56 Upon completion of a wirel winding operation by the instant tool the piston 56, as previously described, is retracted in the cylinder 5,5 by the action of the spring 64. To permit this retracting or rearward movement of the piston unhindered by any uid trapped in the cylinder 55 behind the piston 56, communication between the cylinder- 55 and the atmosphere is established when the valve 83 is closed.
  • the valve body 84 is provided with a longitudinal passage 95 which intersects a transverse passage 97 formed in the body 84- of the valving element. The outer ends of the passage 97 are adapted to register with ports 98 formed.
  • valve bushing 85 intermediate the ends of the valve bushing 85, such registration occurring ⁇ only when the valve body 84 is in its forwardmost position, i.e., when the z valving element is seated against the inner annular end of the bushing so asv to interrupt pressure fluid supply from the chamber 81.
  • the piston 56 is returned by the spring 64, any pressure fluid trapped in the cylinder 55 is exhausted to theY atmosphere by way of the passage 92, the annular chamber 90 surrounding the bushing 85,
  • the illustrative tool includes a pressure fluid operated motor 15 which is adapted to rotate the bit 20, sleeve 21 and collar 40, through speed reduction gearing 22 and clutch 23, to perform the wire winding operation.
  • pressure tluid here compressed air
  • a valve indicated generally at 101 Fig.
  • the valve 101 is preferably of the poppet type and includes a valve body 101A and a bushing 103 which is received in a bore formed in the handle portion 12 of the tool body 10. Intermediate its ends the valve body 101A is necked-down as at 104 to dene with the inner end portion of the valve bushing a valve chamber 104A. At its outer end the valve body terminates in a head which is suitably equipped with an O-ring 107. The latter is adapted to seat against the inner end of the bushing 103 to interrupt communication between the supply chamber 81 and the valve chamber 104A.
  • the bushing 103 is of reduced diameter to dene with the bore of the housing portion 10a in which it is received an annular chamber 103A which communicates directly with the motor supply passage 162. Communication between the valve chamber 104A and the annular chamber 103A is established by suitably porting the valve bushing 103 adjacent the inner end thereof.
  • the illustrative tool is constructed and arranged to the end that, first, the piston 56, and with it the sleeves 40 and 21, is advanced with respect to the bit 20 to perform the wire cutting and insulation severing and separating operations, and then the motor is actuated to rotate the bit so as to perform the winding operation whereby to effect an electrical connection between the conductor C of the wire W and a terminal received in the forward end of the bit 20.
  • This sequential operation as outlined is effected by the operation of a single means under the control of an operator using the tool.
  • the single control means comprises the trigger 14 in combination with the valves 83 and 101.
  • valve 83 is operated upon initial movement of the trigger 14 to supply pressure fluid to the cylinder 55 to advance the piston 56 and the sleeves 40 and 21 with respect to the bit 20, and upon subsequent movement of the trigger 14 the valve 101 is operated to supply pressure fluid to the motor 15 whereby rotation of the bit 20 is effected.
  • pressure fluid supply to the cylinder 55 is maintained so long as the trigger is depressed, thus maintaining the valve 83 open, and while the valve 101 is open to effect operation of the motor 15 and thus rotation of the bit 20.
  • pressure fluid in the supply chamber 81 acts to close both valves 83 and 101 interrupting the supply of live pressure fluid to the tool. Simultaneously with the closure of valve 83, communication between the cylinder 55 and the atmosphere is established to provide an exhaust path from the cylinder.
  • the sequential operation of the device is effected because of the side-by-side disposition of the valves 83 and 101 and the formation of the stem 84 of the valve 83 of a length somewhat longer than that of the valve body 101A. It will be apparent from Fig. 3, therefore, that initial movement of the trigger 14 from its normal or rest position effects opening of the valve 83 in advance of engagement of the trigger with the stem 101A of the valve 101. To put this another way, the valve body 84 of the valve 83 is continuously in engagement with the trigger 14 whereas a lost-motion connection is provided between the trigger 14 and the valve stern 101A, which lost motion must be taken up prior to operation of the valve 101 to supply pressure uid from the supply chamber 81 to the motor 15.
  • the operator can complete the depression of the trigger 14 so as to open the valve 101 whereby to effect operation of the motor 15 and thus rotation of the bit 20.
  • the latter operation is carried on with the sleeve 21 maintained in its forwardmost position with respect to the bit 20 with its contiguous inner wall closing the wire receiving groove 25 that extends longitudinally in the peripheral surface of the bit 20 so as to guide the conductor C of the wire W as it is withdrawn from the groove 25 and is applied to a terminal received in the recess 24 during a winding operation.
  • valve means can be utilized with equal facility so long as such valve means is operative first to supply pressure fluid to effect longitudinal movement of the sleeves 40 and 21 with respect to the bit 20 and is operative subsequently to supply pressure fluid to effect rotation of the bit 20, while maintaining the lirst mentioned supply of pressure fluid so that the sleeve 21 is held in its forwardmost position with respect to the bit 20 during rotation of the bit.
  • the bit 20 be stopped upon completion of each wire winding operation, in the same relative angular position. While it is not especially important that the wire receiving groove 25 of the bit always be in the position shown in Fig. 2, it is desirable that whatever position thereof is chosen by the operator to suit his convenience, that the bit is returned to such position for the initiation of each succeeding operation of the tool.
  • repositioning means is incorporated which corresponds to that illustrated and described in copending application Serial No. 280,571 of Ernest H. Shaff filed April 4, 1952, now U.S. Patent No. 2,732,139. Suffice it to say for present purposes, and referring particularly to Figs.
  • the clutch 23 includes a driving clutch element 111 which is adapted to engage a driven clutch element 110, the latter being rigid with a spindle 120.
  • the clutch element 111 is longitudinally shiftable into and out of engagement with the driven element 110.
  • the element 111 is spring biased into disengaged position and is movable into engagernent with the element under the action of pressure uid upon admission thereof to the motor chamber in the rear housing portion 10c to actuate the motor 15. Longitudinal movement of element 111 is guided by a splined collar 15a which is mounted upon the output shaft 15b of the motor 15. It will be apparent from Figs.
  • the spindle has a non-rotative connection with the bit 20 to impart rotary movement thereto. In this instance, such connection is afforded by the engagement of a flat 124 formed on the inner end of the bit 20 with a cross pin 123 mounted adjacent the forward end of the spindle 120.
  • the spindle 120 is journaled within the barrel 60 and surrounding the spindle and within the rear end of the barrel 60 is a spring 125 which is anchored at its rear end in the driven clutch member 110 as at 132.
  • the spring 125 is of the torsional type and is adapted to frictionally engage the inner surface of the barrel 60.
  • the spring 125 tends to be wound Upon completion of the winding operation the spring 125 tends to unwind, and because of its engagement with the barrel 60 it tends to rotate the barrel 60. Since the barrel 60 is retained in non-rotative relation within the tool, therefore reverse rotation is imparted to the spindle 120 and to the bit 20 by the pin-and-flat connection 123, 124. In order to stop this reverse rotation, the barrel 60 is equipped with pawl 126 which is adapted to engage a notch 127 formed in the periphery of the spindle 120 adjacent the forward end thereof.
  • the pawl 126 is biased toward notchengaging position by a spring 130 which is received in a suitably formed recess 131 formed in the barrel 60 (Fig. 7). It will be apparent from Fig. 7 that so long as the motor 15 is driving the spindle 120 and bit 20 in a counterclockwise direction as seen in Fig. 7, the pawl 126 is cammed out of the notch 127 and rotation is unhindered. Upon interruption of such rotation of ass/inse the spindle so as to release the spindle 120 to the action of the spring 125 (which was wound during counterclockwise rotation of the spindle by the motor) the spindle is rotated in a clockwise rdirection until the pawl engages the notch 127. It will be appreciated of course that the notch 127 is disposed to correspond to the desired angular position of the bit 20. Thus, upon engagement of the pawl 126 in the notch 127 this desired angular position is reestablished for subsequent operation of the tool.
  • Fig. 8 of the drawings there is shown for purposes of illustration a modified form of the instant device in which this aspect of the invention is incorporated.
  • similar reference numerals are utilized with the suilix letter B for corresponding components.
  • this form of the invention includes a housing 10B defining a cylinder 55B reciprocable Within which is a piston 56B for advancing and retracting sleeves 40B and 21B with respect to a bit 20B.
  • the sleeves are fastened to the piston by means of a C-washer 58B Within which the bit B is journaled intermediate its ends. Adjacent its rear end the bit is journaled in a suitable bushing mounted in the forward end of a barrel 60B.
  • the barrel 69B is supported in non-rotative relation within the housing 141B, and its external surface together with the internal surface of the cylinder 55B of the housing 10B serves to guide the forward and return movement of the piston 56B.
  • a spindle 120B which has rigid with its rear end the driven element of a clutch generally designated 23B, the driving element of which, as in the form of the invention previously illustrated and described, is adapted to be driven in the same manner as the driving element of the clutch 23.
  • a non-rotative connection is provided between the forward end of the spindle 120B and the rear end of the bit 20B by the engagement of a through pin 123B carried by the spindle with a flat 124B formed on the rear end of the bit 28.
  • a return spring 64B interposed between the inner surface of the forward end of the housing 10B and the C-Washer 58B.
  • a return spring 64B Upon admission of pressure uid to the cylinder 55B behind the piston 56B, the piston and with it the sleeves 40B and 21B, are advanced with respect to the bit 20B and upon such forward or advancing movement the spring 64B is compressed.
  • the spring 64B Upon interruption of the supply of pressure lluid to the cylinderl SSB the spring 64B can expand and in so doing is effective to retract the piston 56B and the sleeves 46B and 21B with respect to the bit 20B.
  • this form of the invention incorporates cam means interposed between the piston 56B and the spindle 120B.
  • the spindle is of stepped cylindrical form, having a portion 126C of enlarged diameter intermediate its ends.
  • the peripheral surface of the enlarged portion 120C as Well as the peripheral surface of the forward end portion of the spindle 120B serves to journal the spindle within the barrel 60B.
  • the forwardly facing surface of the enlarged spindle portion 120C is formed as a cam surface 130.
  • Rigid with the C-Washer 58B is a cam follower 132.
  • the cam follower 132 is of rod or pin form and extends rearwardly from the G-Washer through a longitudinal bore 134 in the barrel 60B.
  • the cam 136 is Iformed so as to provide a low point or notch as indicated at 13051; This low point or notch conforms generally to the rounded end 132a of the cam follower 132 so as to provide a definite rest position. More particularly as shown and ⁇ described the cam surface 1.30 is of the end or face type presenting an axially disposed semi-helical surface. As can best be seen upon reference to Fig.
  • the cam surface 13@ has a high or more forward point disposed peripherally from its low point, and at the low point is formed the notch 130a. It will be apparent, therefore, that -the direction of rotation of the spindle portion 120C, spindle 120B and bit 20B, will depend on the relative angular location of the cam surface 13d with respect to the cam follower 132 when power supply to the tool is interrupted so as to release the piston 55B to the action of the return spring 64B. Actually the direction of rotation is immaterial for the desired end is that the spindle portion 120C, spindle 120B and bit 20B be rotated only until the cam follower attains the lower or rearmost point on the cam surface '130. This low point has an angular relationship with the remainder of the tool as may be predetermined by the operator.
  • a tool constructed and arranged in accordance with the teachings of the present invention permits of ready insertion of a wire therein simply by laying the wire across the bit with the sleeve in its retracted position. Further, upon operation of the device, power is applied to produce relative movement between the bit and the sleeve whereby the wire is cut so as to remove the excess portion of its length that is to be stripped of insulation, has its insulation severed and parted, and its conductor is positioned for application to a terminal. Power is then applied to rotate the bit for winding the wires conductor about a terminal and on interruption of the application of power to the tool, the bit is guided to a predetermined angular position relative to the tool axis.
  • the foregoing construction and arrangement is of relatively simple form requiring a minimum number of individual components and is simple of manufacture.
  • the tool is rugged and due to its relatively simple construction, may be made of minimum size, for use in applications where space is at a premium.
  • the tool is completely power actuated, simple of manipulation and foolproof in operation enabling use by unskilled operators with optimum results.
  • a pressure uid operated tool for preparing and applying a wire to a terminal having a rotary bit and a sleeve mounted on said bit for longitudinal movement with respect thereto
  • the combination comprising means responsive to the application of pressure uid for advancing the sleeve with respect to the bit for preparing and positioning the wire for application to the terminal, means responsive to the application of pressure uid for rotating the bit to wind the wire about the terminal, and valve means for sequentially supplying pressure fluid first to said sleeve moving means and then to said bit rotating means.
  • a pressure fluid operated tool for preparing and ⁇ applying a wire to a terminal having a rotary bit and a sleeve mounted on said bit for longitudinal movement J with respect thereto
  • the combination comprising pressure iluid responsive means for moving the sleeve with respect to the bit for preparing and positioning the wire for application to the terminal, pressure iluid responsive means for rotating the bit to wind the wire about the terminal, and valve means for sequentially supplying pressure fluid rst to said sleeve moving means and then to said bit rotating means, said valve means maintaining the supply of pressure fluid to said sleeve moving means during the supply of pressure fluid to said bit rotating means.
  • a iluid pressure operated tool for preparing and applying a wire to a terminal including a rotary bit and a sleeve mounted on said bit for longitudinal movement with respect thereto, the combination comprising a rotary iiuid motor for said bit, a reciprocable fluid motor for said sleeve, and means for controlling the application of power to said motors sequentially, said means including a pair of valves disposed in side-by-side relation and operable respectively to admit pressure fluid to said rotary motor and to said reciprocable motor, and including a single trigger operable to first open the valve controlling the application of power to said reciprocable motor to etfect longitudinal movement of said sleeve with respect to said bit for preparing and positioning the wire in said bit and then operable to open the valve controlling the admission of pressure liuid to said rotary motor to elect rotation of said bit to apply the wire to the terminal.
  • a tool for preparing and applying a wire to a terminal including a bit adapted to have inserted therein one end of the wire and having a member telescoped over said bit and mounted for longitudinal movement with respect to the bit to position the wire in the bit, the combination of a housing dening a motor chamber and a cylinder, a motor in said chamber, a piston reciprocable in said cylinder for moving the member between a retracted position wherein the forward end of the bit is exposed to receive the wire and a forward position wherein the forward end of said member traverses the forward end of said bit to position the wire therein, means including a spindle journaled in said housing and interposed between said bit and motor for rotating the bit to wind the wire conductor about a terminal, a rst valve regulating the admission of fluid to said cylinder to advance said piston, a second valve regulating the admission of uid 12 to operate the motor, and a trigger for .operating said rst and second valves sequentially.
  • a tool for preparing and applying insulated wire to a terminal having a bit adapted to have inserted therein one end of an insulated wire and having a member telescoped over said bit and mounted for longitudinal movement with respect to the bit to cut and separate the insulation from the wire
  • a pressure fluid operated tool for preparing and applying an insulated wire to a terminal, having a bit adapted to have inserted therein one end of an insulated wire and having a member telescoped over said bit and mounted for longitudinal movement with respect to the bit to cut and separate the insulation from the wire, the combination of a housing, pressure iiuid responsive motive means in said housing for moving the member between a retracted position wherein the forward end of the bit is exposed to receive the insulated wire and a forward position wherein the forward end of said member traverses the forward end of said bit to cut and separate the insulation on the wire, a valve regulating the application of pressure uid to said motive means, pressure fluid responsive drive means for rotating the bit and the member together to wind the wires bared conductor about a terminal, a second valve regulating the application of pressure uid to operate the drive means, control means for operating said valves sequentially to first actuate said motive means and thereafter to actuate said drive means, means for returning the member from the forward position upon
  • a pressure fluid operated tool for preparing and applying a wire to a terminal and having a rotary bit and a sleeve mounted on said bit for longitudinal movement with respect thereto, the combination comprising pressure fluid responsive means for advancing the sleeve with respect to the bit for preparing and positioning the wire for application to the terminal., pressure fluid rcsponsive means for rotating the bit to wind the wire about the terminal, valve means for sequentially supplying pressure uid first to said sleeve moving means and then to said bit rotating means, and means conditioned during the movement of the sleeve with respect to the bi-t and operable as an incident to the interruption of the supply of pressure uid for returning the sleeve to its initial position.
  • a ⁇ tool for preparing and applying a wire to a terminal including a bit adapted to have inserted therein one end of the wire and having a member telescoped over said bit and mounted for relative longitudinal movement with respect to the bit to position the wire in the bit, the combination of a housing dening a motor chamber and a cylinder, a motor in said chamber, a piston reciprocable in said cylinder for moving the member beassises tween a retracted position wherein the forward end of ⁇ the bit is exposed to receive the wire and a forward position wherein the forward end of said member traverses the forward end of said bit to position the wire therein, a spindle journaled in said housing and interposed between said bit and motor for rotating the bit to wind the wire about a terminal, valve means including a rst valve for regulating the admission of fluid to said cylinder to advance said piston, a second valve for regulating the admission of pressure fluid to operate the motor and including a trigger for operating said first and second valves sequentially, and means interposed
  • a tool for preparing and applying a wire to a terminal including a bit adapted to have inserted therein one end of the wire and having a member telescoped over said bit and mounted for relative longitudinal movement with respect to the bit to position the wire in the bit, the combination of a housing defining a motor chamber and a cylinder, a motor in said chamber, a piston reciprocable in said cylinder for moving the member between a retracted position wherein the forward end of the bit is exposed to receive the wire and a forward position wherein the forward end of said member traverses the forward end of said bit to position the wire therein, a spindle journaled in said housing and interposed between said bit and motor for rotating the bit to wind the wire about a terminal, valve means including a rst valve for regulating the admission of fluid to said cylinder to advance said piston, a second valve for regulating the admission of pressure fluid to operate the motor and including a trigger for operating said first and second valves sequentially, means interposed between said piston and said housing conditioned during the advance
  • a tool for preparing and applying a Wire to a terminal including a bit adapted to have inserted therein one end of the wire and having a member telescoped over said bit and mounted for relative longitudinal movement with respect to the bit to position the wire in the bit, the combination of a housing dening a motor chamber and a cylinder, a motor in said chamber, a piston reciprocable in said cylinder for moving the member between a retracted position wherein the forward end of the bit is exposed to receive the wire and a forward position wherein the forward end of said member traverses the forward end of said bit to position the wire therein,
  • valve means including a rst valve for regulating the admission of fluid to said cylinder to advance said piston, a second valve for regulating the admission of pressure fluid to operate the motor and including a trigger for operating said first and second valves sequentially, means interposed between said piston and said housing conditioned during the advance of said piston and operative upon closure of said valve means to return said piston and retract said members, means interposed between said piston and said spindle operative during retracti-ng movement of said piston to rotate said spindle and said bit to a predetermined angular position, said last mentioned means including a cam and cam follower interposed between said piston and said spindle.
  • a tool for preparing and applying a wire to a terminal including a bit adapted to have inserted therein one end of the wire and having a member telescoped over said bit and mounted for relative longitudinal movement with respect to the bit to position the wire in the bit, the combination of a housing defining a motor chamber and a cylinder, a motor in said chamber, a piston reciprocable in said cylinder for moving the member between a retracted position wherein the forward end of the bit is exposed to receive the wire and a forward position wherein the forward end of said member traverses the forward end of said bit to position the wire therein, a spindle journaled in said housing and interposed between said bit and motor for rotating the bit to wind the wire about a terminal, valve means including a first valve for regulating the admission of fluid to said cylinder to advance said piston, a second valve for regulating the admission of pressure fluid to operate the motor, and including a trigger for operating said first and second valves sequentially, means interposed between said piston and said housing conditioned during the advance

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US550029A 1955-11-30 1955-11-30 Tool for preparing and applying wires to terminals Expired - Lifetime US2884685A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE546307D BE546307A (xx) 1955-11-30
US550029A US2884685A (en) 1955-11-30 1955-11-30 Tool for preparing and applying wires to terminals
DEG19223A DE1089029B (de) 1955-11-30 1956-03-20 Werkzeug zum Aufwickeln eines Drahtes auf einen elektrischen Leiter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US550029A US2884685A (en) 1955-11-30 1955-11-30 Tool for preparing and applying wires to terminals

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US2884685A true US2884685A (en) 1959-05-05

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023484A (en) * 1959-12-17 1962-03-06 Western Electric Co Device for stripping and winding insulated conductors
US3117736A (en) * 1961-06-19 1964-01-14 Gardner Denver Co Wire wrapping device
US3172512A (en) * 1962-03-07 1965-03-09 Ingersoll Rand Co Positioning means for wire wrapping tool
US3172517A (en) * 1961-11-22 1965-03-09 Ingersoll Rand Co Clutch and definite position stop for wire wrapping tool
US3181675A (en) * 1962-02-26 1965-05-04 Aerojet General Co Shaft indexing device
US3243130A (en) * 1963-01-24 1966-03-29 Thor Power Tool Co Wire wrapping tool
US3457616A (en) * 1967-12-01 1969-07-29 Western Electric Co Sleeve loading wire wrapping tool
US3656218A (en) * 1968-08-30 1972-04-18 Int Standard Electric Corp Wire stripping and wrapping gun

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696656A (en) * 1953-07-24 1954-12-14 Bell Telephone Labor Inc Tool for making electrical connections
US2743503A (en) * 1952-12-30 1956-05-01 Bell Telephone Labor Inc Wire connecting tool

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE510459A (xx) *

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2743503A (en) * 1952-12-30 1956-05-01 Bell Telephone Labor Inc Wire connecting tool
US2696656A (en) * 1953-07-24 1954-12-14 Bell Telephone Labor Inc Tool for making electrical connections

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023484A (en) * 1959-12-17 1962-03-06 Western Electric Co Device for stripping and winding insulated conductors
US3117736A (en) * 1961-06-19 1964-01-14 Gardner Denver Co Wire wrapping device
US3172517A (en) * 1961-11-22 1965-03-09 Ingersoll Rand Co Clutch and definite position stop for wire wrapping tool
US3181675A (en) * 1962-02-26 1965-05-04 Aerojet General Co Shaft indexing device
US3172512A (en) * 1962-03-07 1965-03-09 Ingersoll Rand Co Positioning means for wire wrapping tool
US3243130A (en) * 1963-01-24 1966-03-29 Thor Power Tool Co Wire wrapping tool
DE1603986B1 (de) * 1963-01-24 1970-01-22 Thor Power Tool Co Einstellvorrichtung bei Werkzeugen zum Aufwickeln von Draht auf elektrische Anschlussstifte
US3457616A (en) * 1967-12-01 1969-07-29 Western Electric Co Sleeve loading wire wrapping tool
US3656218A (en) * 1968-08-30 1972-04-18 Int Standard Electric Corp Wire stripping and wrapping gun

Also Published As

Publication number Publication date
BE546307A (xx)
DE1089029B (de) 1960-09-15

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