US2636251A - Base threader - Google Patents

Base threader Download PDF

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Publication number
US2636251A
US2636251A US650988A US65098846A US2636251A US 2636251 A US2636251 A US 2636251A US 650988 A US650988 A US 650988A US 65098846 A US65098846 A US 65098846A US 2636251 A US2636251 A US 2636251A
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US
United States
Prior art keywords
adapter
base
arms
movement
wires
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US650988A
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English (en)
Inventor
La Rue V Regelman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL68053D priority Critical patent/NL68053C/xx
Application filed by Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Priority to US650988A priority patent/US2636251A/en
Priority to GB21700/47A priority patent/GB666205A/en
Priority to FR953133D priority patent/FR953133A/fr
Application granted granted Critical
Publication of US2636251A publication Critical patent/US2636251A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/28—Manufacture of leading-in conductors

Definitions

  • the present invention relates to the method of basing envelopes, and to a fixture used to facilitate threading the lead-in wires of a member such as a radio tube or the like into the tubular terminal pins in a base member.
  • An object of my invention isto provide animproved method for facilitating the threading of a wire into an aperture.
  • An object of the invention is the provision of an assembly fixture which makes threading of the wires practically automatic in that all that is required of the operator is to hold the glass envelope in one hand, exert a slight end pressure thereon and press a button.
  • the work is done more expeditiously, production is greatly increased, and the eyestrain and general fatigue resultant from manual operation are eliminated.
  • a further object of the invention is to make provision for the cushioning of movable parts so as to absorb all shocks and thus prevent possible injury to the internal structure of the tubes or the like constituting elements of the work being assembled.
  • Another object of the invention is the provision, in a fixture of the character described, of a plurality of uniquely constructed wire threading split needles operating in a manner to readily receive and guide the wires into the apertures of respective terminal pins, and then being movable to an inoperative position which permits a relative axial movement of the envelope and base in the uniting of these two members.
  • Still another object of the invention is to provide a base threading fixture which is positive and -eicient in operation, of simple and practical construction, easy to manipulate and not liableto derangement.
  • Figure l shows the apparatus partly in side elevation and partly in vertical section along line I-l of Fig. 2.
  • lead-in wires from the header of a glass envelope are shown as being guided into the apertures of the terminal pins and one of the needle carrying arms is indicated in dotted lines in its inoperative position.
  • Fig. 2 is a top plan view of the apparatus seen in Fig. 1 but with al1 of the needle carrying arms except one being broken off adjacent their innerv 0r needle ends.
  • Fig. 3 is a view in side elevation of the micro switch and the adapter with which it cooperates, the switch being shown in full lines in one position and in dotted lines in another position.
  • Fig. 4 is a fragmentary illustration in top plan view of three adjacent needles, these parts being shown in dotted lines in their operative position and in full lines as moved part way to open or inoperative position.
  • Fig. 5 is a detail sectional view on line 5-5 of Fig. 1.
  • Fig. 8 is a View in elevation of the work after assembly, the lower portion only of the envelope being shown, and,
  • Fig. 9 is a top plan view of one of the needlecarrying swinging arms, parts being in section to show details of construction.
  • the work to be accomplished by the fixture apparatus is, referring rst to Figs. l, 6, 7, and 8, the threading of the comparatively long, thin and flexiblel lead-in wires I, which project from the header of a glass envelope 2, substantially as illustrated in Fig. 6, into and through the tubular terminal pins 3, projecting downward from the bottom wall of the usual socket or base member 4.
  • the envelope shown is that of a radio receiving tube having six lead-in wires, and the terminal pins 3 which are anchored in the bottom wall of the socket 4, extend parallel to the axis of such member and are regularly spaced in a circle concentric therewith.
  • the socket or base 4 When assembled the socket or base 4 telescopically receives the header end of the envelope, a thin ring 5 of a plastic substance on the side wall of the socket adjacent its upper end providing a seal and protective bumper between the two members.
  • the projecting ends of the Wires I, with reference to Fig. 8, are severed and the wires soldered to the lower ends of the tubular pins which are sealed in a machine designed for that purpose.
  • numeral 6 represents a base plate which, in
  • the cylindrical housing comprises top and bottom annular portions I and I I, respectively, connected by spaced side bars I2, and a bottom wall I3 having a central opening I4.
  • a reciprocatory two-way air motor having a cylinder I 6 and a piston rod Il'.
  • the piston rod is slidable in a gland I8 extending through the opening I4, the end of the rod being threaded into the reduced and externally threaded lower end of a block I9 comprising the lower one of three relatively axially movable sections of an operating connection between the piston rod and a base block or adapter upon which the work piece 4 is supported.
  • the block I9 has an upwardly opening axial bore 2
  • Relative axial movement of the parts I9 and 22 is limited by the length of opposing slots 24 in the block which slidably receive the projecting ends of a key pin 25 having a drive nt in the rod.
  • an elongated slot 26 for slidably receiving a pin 21 whereby the rod is splined to a collar 28 integral with the lower end of a tubular portion formed by a downwardly opening bore 29, in a rod 3) which is the upper section of the piston-to-adapter connection.
  • the tubular portion of the section member 30 thus provides a sleeve in telescopic arrangement with the member 22. Interposed between the latter and the end of the bore 29 is a coiled compression spring 3I.
  • the upper end of the rod member is threaded into the adapter 2!) and pinned at 32 to prevent relative turning of these parts.
  • the adapter 2li illustrated in Fig. 1 as resting upon the base plate 6, is in this instance, shown as a disc having a plurality of apertures 33 extending axially therethrough and of a size to slidably receive the terminal pins 3.
  • the upper ends of the openings are preferably countersunk to receive shoulders 3E on the pins.
  • These apertures 33 register with like openings 34 extending through a guide member 35 screwed to the underside of plate 6.
  • This member 35 also has an axial bore in which the tubular rod 39 is guided in its reciprocating movement, while the apertures 33 and 34 in the adapter and guide member, respectively, slidably receive knockout pins 36 upstanding from a collar 53 which is slidably mounted on the rod 35 above the collar 25.
  • the adapter 29 in its movement from the position illustrated in Fig. 1 to that in which it is seen in full lines in Fig. 3, is guided on two diametrically opposite posts 31 upstanding from plate 5 and provided at their upper ends with stop washers 38 held in place by screws 39.
  • an inverted cup-shaped member 4I Surrounding the guide 35 and secured to the underside of plate 5 by screws 49 is an inverted cup-shaped member 4I the annular sidewall of which is chamfered to provide a cam surface 42.
  • This surface is for the purpose of deilecting a plurality of spring retractable iingers 43, of which there are three in the illustrated embodiment of the invention, by the engagement therewith of outwardly diverging extensions 44 of the iingers when the latter move upward.
  • the ⁇ lingers 43 normally extend parallel with the piston-to-adapter connection and adjacent their vlower ends have pivoted connection at 45 in slots 45 cut in the periphery of a lifting mem- 4 ber 4I'.
  • Lifting member 4l surrounds and is secured to the lower connector section I9 by one or more set screws 48.
  • Depending tail portions 49 on the ngers are engaged by coiled compression springs 50 seated in radially extending bores in the member 41.
  • each finger 43 Extending inwardly from each finger 43, and in the plane thereof irom'a point adjacent the inner end of the angula-r extension 44, is a detent 5I which provides a shoulder 52 adapted to engage under and support the collar 53, the latter having apertures for receiving the knockout pins 3B and set screws 54 whereby the pins are secured thereto.
  • the inner edges of the ringer-s are tangential to cam surfaces 55 terminating at their junction with the free ends of the shoulders 52.
  • the reduced end of the connector section I9 is threaded into a horizontally disposed plate 56 formed with a plurality of regularly spaced radially slotted spider arms 51 of a number equal to that of the lead-in wires I andthe openings 33 and 34.
  • These spider arms have flexible link connection with depending ears 53 on a like number of radially extending arms 59 arranged above the plate 6 and having their outer ends pivoted on studs 5l] mounted in spaced uprights 5I on brackets 52 which by screws 63 are secured to the plate B.
  • each spider arm and its respective swinging arm 59 while indicated generally at 64a, comprises a rod 64 adjust ably threaded into one end of a connecting bar 55 which, at its other end, is pivoted at 65 to a spider arm 5l.
  • the rod 64 is formed with a head 5i' guided for relative axial movement in the elongated tubular portion of an upper connector 58 which engages through an opening Bil therefor in the plate 6 and has its upper end bifurcated to straddle and have pivotal connection at 'It with the ear 58.
  • the tubular portion of the member 68 is closed by a removable cap II having an opening for slidably receiving the rod 64 and interposed between the head B'I and the end closure 1I, and the head and the end of the bore, are opposing coiled compression springs 'I2 and i3, respectively. Stops 91 on the brackets 52 limit outward movement of the arms 59 when reaching the position indicated for one of them at 59a in Fig. 1.
  • the swinging arms 59 are movable in vertical planes coincident with the axes of the apertures 33 in the adapter 2t and are formed at their inner ends with depending nose pieces Ill which, when the arms are swung to operative position, as illustrated in full lines in Figs. 1 and 2 and in dotted lines in Fig. 4, engage within the annular side wall of the socket member l and come to rest with their tip ends in yielding contact with the upper ends of respective terminal-pins 3.l
  • the nose pieces 'i4 are split longitudinally through their center and this division is extended part way of the length of the arms to provide two half sections one of which is an integral part of the arm, while the other terminates at a dividing line i5 at right angles to the split in the nose pieces to provide a leaf I6.
  • This leaf member for each arm 5d has hinge connection at 'Il and is permitted a limited out ward or sidewise movement sumcient to provide an opening 78 in the nose piece which will allow passage therethrough of a, lead-in wire I.
  • a coiled compression spring 'i9 housed within a screw plug threaded into the arm .proper acts against the leaf I5 to normally urge it to an open position.
  • Each nose piece 'llt is formed with a channel 8l throughout its length, the wail of which, when the two sections are closed, converges toward its lower end so that the smallest diameter is exactly that of the opening through the terminal pin 3 withwhich it registers.
  • the upper end of the channel wall merges with the inner face of a concave-convex segmental part 82 which by a tail piece S3 and screws SAI is secured to 'the half section which forms an integral part of the arm
  • Attached to the plate 6 in a radial line midway between two of the arms 59 is a bracket 85 including spaced sidewalls in which is pivotally mounted at 9&5 the forward end of a rocker arm B' upon which a micro switch 8S is supported, this switch including an electrical contact 9S and a spring contact nger 9c.
  • a detent 9i formed on its underside with a cam surface 92.
  • the detent rides on the peripheral surface of the adapter 29 so that when the latter is in its raised position, as illustrated in Fig. 3, the rocker arm will be moved to its full line position.
  • the cam surface SI2 riding on the top peripheral edge of the adapter permits the rocker arm to swing to the dotted line position die under action of a coiled compression spring 93, thus moving the projecting free end of contact nger 9i! to substantially the dotted line position Sta.
  • the spider arm plate 55 When starting an assembly the spider arm plate 55 is in its upper position whereby the needle arms 59 by means of their link connection with the spider arms 5i are in the dotted line position indicated for one of them at 59e in Fig. l, and with the adapter plate 2d in the raised position illustrated in Fig. 3. With the arms 59 thus swung clear of the adapter 29, the operator places a base 4 upon the adapter with its terminal pins 3 inserted in the apertures 33 and presses a button 94 conveniently located in the plate G.
  • a circuit is thus established through the electrical connections whereby air is admitted through pipe 96 to the bottom of cylinder I6 and the piston rod moves upward to again raise plate 56 and with it the lower section I9 of the piston-to-adapter connection, the block member 4'! secured to the section I9 and the fingers 43, the latter carrying with them the collar 53 and pins 35 which, in this initial movement, are guided in the apertures 34 and 33 to an approximate contact with the ends of terminal pins 3.
  • the links 64e also move upward with plate 56 and effect an outward swing of the needle arms 59 about their pivotal connections 60.
  • This initial, or delayed movement which is the length or" slots 2li in member IS, enables the nose pieces or needles 74 to clear the side wall of the work piece 4. And, as the arms 59 start their upward and outward swing in radial planes and the segmental pieces 82 spread apart due to enlargement of the circle within which .they are contained, the leaves 16, urged by springs 79, move sidewise to form the openings 'I9 in the nose pieces which permit the latter to clear the lead-in wires I.
  • section rod 22 now moving upward with the lower section member It, eects through the comparatively heavy compression spring 3l a resilient upward movement ofthe upper, tubular section 30 and the adapter 20 which, with a slight downward pressure on the envelope 2 by hand of the operator eiects a telescoping engagement of the socket or base member d with the header end of the envelope 2 and passage of the lead-in wires l through the tubular terminal pins 3, as illustrated in Fig. 8.
  • a base threading fixture the combination with an adapter upon which a base. is removably supported and having a plurality of openings for receiving tubular terminal pins projecting from the bottom oi the base, of means for guiding wires individually into the pins, means for moving said guiding means into and out of an operative position to receive the wires, a two- Way huid operated motor including a piston, a piston-to-adapter connection for reciprocating :said adapter and comprising three relatively movable sections, comprising a lower section secured to said piston, an upper section secured to said adapter and an intermediate section,v said lower and upper sections having opposing bores for sl-idab-ly receiving said intermediate section, a coiled compression spring housed within the bore of said upper section and. acting against said intermediate section, pin-and-slot connections between said intermediate section and said upper and lower sections whereby respective relative movement of said sections is limited to length of said slots, and means for guiding said adapter in its reciprocating movement.
  • a base threading xture the combination with an adapter upon which a. base is removably supported and having a plurality of openings for receiving tubular terminal pins project.- ing from the bottom of the base, of means for guiding Wires individually into said terminal pins, means for moving said guiding means into and out of an operative position to receive the wires, a two-way nid operated motor including a piston, a piston-to-adapter connection for reciprocating said adapter and comprising three relatively movable sections,l via., an upper section secured to said adapter. ⁇ a lower section secured tosaid piston and an intermediate section in telescopic arrangement with said upper and lower sections, means limiting respective relative axial movement of said sections and a compression ⁇ spring housed within said upper section and engaged by said intermediate section, a lifting block xed to said lower section, a plate for supporting said adapter when in one position, means on said plate for guiding said adapter in its reciprocatmovement, stops on said guiding means,
  • an adapter for supporting the base, means for effecting a reciprocating movement of said adapter, a piurality of arms arranged radially of said adapter and pivoted adjacent their outer ends to swing about axes at right angles to the direction of said adapter movement, nose pieces depending froin the inner ends of said arms and having open ended channels in the direction of their iength for receiving and guiding the wires into the tubular pins when said nose pieces are swung to an operative position above the base, stops limiting movement of said arms in each clirection of their oscillating movement, a lifting plate and motor means for raising and lowering said plate, a flexible connection between said lifting plate and said adapter for raising and lowering the adapter and providing a delayed movement of the adapter with respect to that or said lifting member, and individual link connections between said lifting member
  • a clevis pivoted to said lifting member a rod axially adjust-- able to one end in said clevis, a head on said rod, an Lipper section pivoted at one end to a respective one of said arms inwardly of' the pivotal mounting of said arm and having an axial bore from its other end partway of its length and? i'n- Whioh said head is slidable, a closure for said bore and having an opening forl said rod, and two coiled compression springs in said bore, one being between said head and the inner end of said' bore, the other encircling said rod and engaging between said head and said end closure.
  • each being split longitudinally, means for eilecting movement of said arms to iirst bring said needles simultaneously to an operative position within said base to facilitate the threading of the wires into the tubular pins and then to an inoperative position permitting further relative axial movement of pins and wires to bring the parts together, and means for moving the walls of the channels apart to permit passage of said wires between them on outward movement of said arms.
  • a combination as recited in claim including an outwardly inclined and transversely conca-ved segmental member secured to the needle end of each of said arms, said segmental members, when said arms are swung to operative position forming a flaring, undulated, annular side wall the bottom inner edges of the undulations merging with the adjacent end edges of said channels to provide unbroken guiding surfaces for said wires.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wire Processing (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
US650988A 1946-02-28 1946-02-28 Base threader Expired - Lifetime US2636251A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL68053D NL68053C (en(2012)) 1946-02-28
US650988A US2636251A (en) 1946-02-28 1946-02-28 Base threader
GB21700/47A GB666205A (en) 1946-02-28 1947-08-07 Method and apparatus for threading a wire leading from one member into an aperture in another member
FR953133D FR953133A (fr) 1946-02-28 1947-09-15 Perfectionnement dans un passeur de fil dans le culot des tubes de radio et similaires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US650988A US2636251A (en) 1946-02-28 1946-02-28 Base threader

Publications (1)

Publication Number Publication Date
US2636251A true US2636251A (en) 1953-04-28

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US650988A Expired - Lifetime US2636251A (en) 1946-02-28 1946-02-28 Base threader

Country Status (4)

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US (1) US2636251A (en(2012))
FR (1) FR953133A (en(2012))
GB (1) GB666205A (en(2012))
NL (1) NL68053C (en(2012))

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2845107A (en) * 1951-12-26 1958-07-29 Gen Electric Lamp basing apparatus
US2936797A (en) * 1954-08-12 1960-05-17 Westinghouse Electric Corp High speed incandescent lamp assembling machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1612537A (en) * 1924-08-29 1926-12-28 Westinghouse Lamp Co Leading-in wire-locating device
US1817746A (en) * 1929-03-23 1931-08-04 Gen Electric Basing apparatus
US2390139A (en) * 1942-06-27 1945-12-04 Rca Corp Lead wire threading machine
US2400122A (en) * 1943-06-25 1946-05-14 Tung Sol Lamp Works Inc Manufacture of miniature thermionic devices

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1612537A (en) * 1924-08-29 1926-12-28 Westinghouse Lamp Co Leading-in wire-locating device
US1817746A (en) * 1929-03-23 1931-08-04 Gen Electric Basing apparatus
US2390139A (en) * 1942-06-27 1945-12-04 Rca Corp Lead wire threading machine
US2400122A (en) * 1943-06-25 1946-05-14 Tung Sol Lamp Works Inc Manufacture of miniature thermionic devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2845107A (en) * 1951-12-26 1958-07-29 Gen Electric Lamp basing apparatus
US2936797A (en) * 1954-08-12 1960-05-17 Westinghouse Electric Corp High speed incandescent lamp assembling machine

Also Published As

Publication number Publication date
FR953133A (fr) 1949-11-30
GB666205A (en) 1952-02-06
NL68053C (en(2012))

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