US155840A - Improvement in bolt-threading dies - Google Patents

Improvement in bolt-threading dies Download PDF

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Publication number
US155840A
US155840A US155840DA US155840A US 155840 A US155840 A US 155840A US 155840D A US155840D A US 155840DA US 155840 A US155840 A US 155840A
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Prior art keywords
dies
collar
bolt
spring
hollow shaft
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Expired - Lifetime
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G5/00—Thread-cutting tools; Die-heads
    • B23G5/08—Thread-cutting tools; Die-heads with means for adjustment
    • B23G5/10—Die-heads
    • B23G5/12—Die-heads self-releasing
    • 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
    • Y10T279/00—Chucks or sockets
    • Y10T279/19—Radially reciprocating jaws
    • Y10T279/1981—External-cone actuated
    • 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
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/83—Tool-support with means to move Tool relative to tool-support
    • Y10T408/85—Tool-support with means to move Tool relative to tool-support to move radially
    • Y10T408/858—Moving means including wedge, screw or cam
    • Y10T408/8588—Axially slidable moving-means
    • Y10T408/85896—Annular wedge-collar

Definitions

  • the nature and object of this invention is a bolt-threading machine in which the dies are made to open or recede from the bolt after it is threaded so as to permit it to be withdrawn. This is done by means of a sliding collar, which is grooved to hold the outer ends of the die, so that by sliding the collar on the hollow shaft through which the dies pass the dies are opened and closed.
  • the principal features of novelty are, first, the manner of holding the sliding collar in position while the dies are threading the bolt, and also the adjustment of the dies to compensate for wear dies; second, the device for opening the t res.
  • Figure 1 is a vertical view of the machine.
  • Fig. 2 represents the front end of the machine.
  • Fig. 3 is a horizontal section of the machine.
  • Fig. 4 is a section of the sliding collar, showing the grooves which gold the dies.
  • Fig. 5 represents one of the res.
  • a is the frame which holds the revolving hollow shaft b. Near the front end of the hollow shaft round holes are drilled through it, in which the dies 0 c c c are fitted, so that no face-plate is required.
  • the sliding collar 61 on the hollow shaft 1) is groovedto hold the dies near their outer ends.
  • the grooves c c c e are made across the sliding collar (11.
  • the outer ends of the dies and the parts of the grooves c c e c which are in contact with the ends of the dies are at an angle to the axis of the cutter-head.
  • the shape of the grooves is shown in Figs. 2 and 4.
  • the parts of the dies which project outside of the hollow shaft b are made to fit these grooves, which prevent the dies from turning in the cutter-head.
  • each die side of each die, at its outer end, projects into the part of the groove 6, shown at t, by means of which the end of the die is kept in contact with the bottom of the groove, and as it is at an angle to the axis of the cutter-head, when the sliding collar (1 is moved forward on the hollow shaft 1) the dies approach each other, and when the sliding collar is moved back the dies are opened.
  • a groove Around in the outside of the ring f, on the hollow shaft, just back of the sliding collar (1, is a groove, into which the pins 9 g in the lever h project. The lever It passes around the rin g f, and the pins g gproject through the lever into the groove of the ring f at the top and bottom of the ring.
  • lever h is loosely pinned to the frame, and the other end of the lever is a handle.
  • the outside of the hollow shaft 1) is grooved length wise to receive the spring it, one end of which is attached to the front end of the hollow shaft 1). the inside to receive the spring k.
  • the screw or stop l passes through the collar 61, and its head presses against the shoulder of the spring It, thus holding the collar d in position while the dies are cutting.
  • the top of the spring it, back of the ring f, is inclined toward the axis of the cutter-head, and projects from the hollow shaft 1) while the dies are cutting.
  • One end of the spiral spring .9 is attached to the outside of the hollow shaft b,.back of the ring f, and the other end is attached to the sliding collar d, the spring passing loosely through a hole in the ringf.
  • the spiral spring 8 draws back the collar d to open the dies when the spring 70 is pressed into the groove of the 1101- low shaft b, so that its shoulder is not in contact with the screw-stop I.
  • the pin 0 passes loosely through a hole in the collar d, and is screwed into the side of the ring f.
  • the machine is operated as follows: When the dies are closed to thread a bolt, by turning the screw-stop l in the collar d, as the head of the screw-stop lpresses against the The ring f is also grooved across spring is, when the spiral spring 8 draws back the collar d, and thus opens the dies and releases the bolt.
  • the grooved sliding collar d in combination with the spring 70 and hollow shaft 11, substantially as and for the purpose herein set forth.
  • the spring 70 in combination with the hollow shaft 1), the stop l,'the sliding collar cl. and the ring f, substantially as and for the purpose herein set forth.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Description

. 2-Sheets--Sheetl.
H. H. MORGAN. Bolt-Threading Dies.
N0.155,840. Patented Oct.13,1874
Fig L 2Sheets--Sheet2 I H. H. MORGAN. Bolt-Threading Dies. N0.l55,840. Patented 0ct.13,1874.
UNITED STATES PATENT OFFICE.
HUGH H. MORGAN, OF RAVENNA, OHIO.
IMPROVEMEhIT m BOLT-THREADING cuss.
Specification forming part of Letters Patent No. 155,840, dated October 13,1874; application filed April 22, 1874.
To all whom it may concern:
Be it known that I, HUGH H. MORGAN, of Ravenna, in the county of Portage and State of Ohio, have invented certain Improvements in Machines for Cutting Threads on Metallic Bolts, of which the following is a specification:
The nature and object of this invention is a bolt-threading machine in which the dies are made to open or recede from the bolt after it is threaded so as to permit it to be withdrawn. This is done by means of a sliding collar, which is grooved to hold the outer ends of the die, so that by sliding the collar on the hollow shaft through which the dies pass the dies are opened and closed. The principal features of novelty are, first, the manner of holding the sliding collar in position while the dies are threading the bolt, and also the adjustment of the dies to compensate for wear dies; second, the device for opening the t res.
In the drawings, Figure 1 is a vertical view of the machine. Fig. 2 represents the front end of the machine. Fig. 3 is a horizontal section of the machine. Fig. 4 is a section of the sliding collar, showing the grooves which gold the dies. Fig. 5 represents one of the res.
ais the frame which holds the revolving hollow shaft b. Near the front end of the hollow shaft round holes are drilled through it, in which the dies 0 c c c are fitted, so that no face-plate is required. The sliding collar 61 on the hollow shaft 1) is groovedto hold the dies near their outer ends. The grooves c c c e are made across the sliding collar (11. The outer ends of the dies and the parts of the grooves c c e c which are in contact with the ends of the dies are at an angle to the axis of the cutter-head. The shape of the grooves is shown in Figs. 2 and 4. The parts of the dies which project outside of the hollow shaft b are made to fit these grooves, which prevent the dies from turning in the cutter-head. One
. side of each die, at its outer end, projects into the part of the groove 6, shown at t, by means of which the end of the die is kept in contact with the bottom of the groove, and as it is at an angle to the axis of the cutter-head, when the sliding collar (1 is moved forward on the hollow shaft 1) the dies approach each other, and when the sliding collar is moved back the dies are opened. Around in the outside of the ring f, on the hollow shaft, just back of the sliding collar (1, is a groove, into which the pins 9 g in the lever h project. The lever It passes around the rin g f, and the pins g gproject through the lever into the groove of the ring f at the top and bottom of the ring. One end of lever h is loosely pinned to the frame, and the other end of the lever is a handle. The outside of the hollow shaft 1) is grooved length wise to receive the spring it, one end of which is attached to the front end of the hollow shaft 1). the inside to receive the spring k. There is a shoulder on the outside of spring It, just back of the sliding collar d, when the dies are closed, which prevents the sliding collar (1 from sliding back' while the dies are cutting, by means of the screw or adjustable stop I. The screw or stop l passes through the collar 61, and its head presses against the shoulder of the spring It, thus holding the collar d in position while the dies are cutting. The top of the spring it, back of the ring f, is inclined toward the axis of the cutter-head, and projects from the hollow shaft 1) while the dies are cutting. One end of the spiral spring .9 is attached to the outside of the hollow shaft b,.back of the ring f, and the other end is attached to the sliding collar d, the spring passing loosely through a hole in the ringf. The spiral spring 8 draws back the collar d to open the dies when the spring 70 is pressed into the groove of the 1101- low shaft b, so that its shoulder is not in contact with the screw-stop I. The pin 0 passes loosely through a hole in the collar d, and is screwed into the side of the ring f. It is used for the same purpose as the spiral spring 8 in case the spring 8 should fail at any time to draw back the collar d and open the dies. For this purpose there is a shoulder in the hole in the collar 01, against which the head of the pin 0 presses when the collar d is drawn back. The collar 01 and ringf revolve with the hollow shaft b.
The machine is operated as follows: When the dies are closed to thread a bolt, by turning the screw-stop l in the collar d, as the head of the screw-stop lpresses against the The ring f is also grooved across spring is, when the spiral spring 8 draws back the collar d, and thus opens the dies and releases the bolt.
pressing'back the lever h untilthe head of the pin 0 presses against the shoulder in the hole through collar 61 and draws back the collar. By turning the screw-pin 0 in the ring fit is adjusted so that its head will not press against collar 01 until the spring 70 is pressed down by the ring f to permit the collar d to be drawn back. To close the dies against the bolt the In case the spiral spring s fails to draw back the collar d, it is done by" handle of the lever h is moved forward,'pressing therin g f against the stop I, and thereby sliding the collar (1 forward which closes the dies, and at the same time permits the spring 70 to rise into the groove in the ring f until the shoulder of the spring 70 is against the end of the stop I.
I claim as my invention- 1. The grooved sliding collar d, in combination with the spring 70 and hollow shaft 11, substantially as and for the purpose herein set forth. r p v I 2'. The spring 70, in combination with the hollow shaft 1), the stop l,'the sliding collar cl. and the ring f, substantially as and for the purpose herein set forth.
HUGH H. MORGAN.
Witnesses BRADFORD HowLAND, GEORGE F. RoBINsoN.
US155840D Improvement in bolt-threading dies Expired - Lifetime US155840A (en)

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