US2451756A - Spindle reversing device for drill presses - Google Patents

Spindle reversing device for drill presses Download PDF

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Publication number
US2451756A
US2451756A US637704A US63770445A US2451756A US 2451756 A US2451756 A US 2451756A US 637704 A US637704 A US 637704A US 63770445 A US63770445 A US 63770445A US 2451756 A US2451756 A US 2451756A
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Prior art keywords
reversing device
spindle
shaft
unit
drill presses
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Expired - Lifetime
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US637704A
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Paul M Lloyd
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Priority to US637704A priority Critical patent/US2451756A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/041—Spindle-reversing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2712/00—Mechanisms for changing direction
    • F16H2712/06—Mechanisms for changing direction only with toothed wheels or friction wheels

Definitions

  • My invention relates to an improvement in spindle-reversing attachments for drill-presses to adapt same for tapping etc.
  • the objects of my invention are to provide an inexpensive, readily home work shops, this being accomplished inpart by the adaption of friction disc elements, eliminating the cost of machined gears.
  • Figure 2 a sectional view of the device as it appears looking down on Figure 1 at A-AA.
  • Figure 3 a perspective view of a conventional bench drill press, with the device IIa attached in approximate position for operation.
  • I shaft, 2 sheave and I beveled disc element are keyed securely in one unit and rotating clockwise constantly with the drill press motor.
  • 3 sheave, beveled disc element are both securely fixed to 4 sleeve shaft, free-running on shaft I and within bearing of housing II, making 3, 5 and 4 a fixed idling unit when not in operation.
  • , 22 and 2B are housing screws; I9 and I9a are screws to securely attach drill press post bracket 20 to housing Ila; 23, 24 and 25 are keys for affixing their adjacent parts securely; 26, 21 are ball-bearings fitted freely in shaft ends; Fig. 2, Z indicates the center of a drill press post.
  • a spindle-reversing device the combination of a housing, driving and driven shafts co-axially aligned and journaled in said housing, two oppositely disposed beveled disc elements upon said driving shaft, one mounted securely to the driving shaft, the other attached to a driven sleeve member rotatable co-axially with said driving shaft and extending along said driving shaft through a housing bearing to receive a securely attached sheave, a beveled composition friction member interposed between said beveled disc elements.
  • a second beveled composition member being mounted securely on a free running shaft within a third bearing in said housing at right angles to driving shaft, said beveled member and free running shaft being free longitudinally to engage with beveled disc elements when pressure is exerted on said free running shaft parallel to the axis of said third bearing, thereby, actuating said beveled disc elements in contrary rotation, and means applied manually and variably upon the driving shaft to effect the engagement and disengagement of said beveled friction member with disc elements.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drilling And Boring (AREA)

Description

Oct. 19, 1948. P. M. LLOYD 2,451,756
- SPINDLE REVERSING DEVICE FOR DRILL PRESSES Filed Dec. 28, 1945 2 Sheets-Sheet 1 It 1 I 1 I m 1 I PaulMLloyJ Oct. 19, 1948. P. M. LLOYD SPINDLE REVERSING DEVICE FOR DRILL PRESSES 2 Sheets$heet 2 Filed Dec. 28, 1945 IN V EN TOR.
PazilMlloya' Patented Oct. I 19, 1948 SPINDLE REVERSING DEVICE F DRILL PRESSES Paul M. Lloyd, Glendale, Calif.
Application December 28,1945, Serial No. 637,704
1 Claim. (01. 74-205) My invention relates to an improvement in spindle-reversing attachments for drill-presses to adapt same for tapping etc. The objects of my invention are to provide an inexpensive, readily home work shops, this being accomplished inpart by the adaption of friction disc elements, eliminating the cost of machined gears.
I attain these and other objects by mechanism illustrated in the accompanying drawings, in which- Figure 1 is a vertical elevation of the entire device, including -a partial sectional view of internal parts.
Figure 2, a sectional view of the device as it appears looking down on Figure 1 at A-AA.
Figure 3, a perspective view of a conventional bench drill press, with the device IIa attached in approximate position for operation.
Similar numerals refer to similar parts throughout the 3 views. Capital letters refer to positions and spaces. I On Fig. 1, I shaft, 2 sheave and I beveled disc element are keyed securely in one unit and rotating clockwise constantly with the drill press motor. 3 sheave, beveled disc element are both securely fixed to 4 sleeve shaft, free-running on shaft I and within bearing of housing II, making 3, 5 and 4 a fixed idling unit when not in operation.
In the forward or clockwise operation, pressure is applied by the operator at shift lever I6, moving same to position F, I0 being securely fixed to rocker arm I2 through shaft II exerts some proportional pressure on unit I, 2, I through adjusting screw 9, engaging 5 with I through the medium of idling composition friction member 6, thereby, uniting the complete vertical assembly on shaft l in one clockwise rotating unit, in which through sheave 3, a V-belt will drive drill press spindle in forward or tapping operation.
In Fig. 1,v upon moving II) to neutral or nonoperating position N, the pressure of 9 is released from I, permitting unit I, 2 and I, to drop by gravitation, closing space X, and releasing the friction of 6 with 5 and I, rendering the complete forward operating position in-operative.
During the forward F, and neutral N positions thepressure on unit III, II, I2 and adjusting screw I3 has been released from shaft I4, collar I5 and composition friction member I6, both being fixed securely to I4, thereby rendering unit l4, I5 and I6 in-operative, as indicated at Y, Fi 1.
To reverse sheave 3 to a counter-clockwise rotationremembering that sheave 2 is constantly rotating clockwise, exert pressure on I6 moving it to position R including its fixed unit II, I2 and I3 which'in turn exerts pressure on fixed unit I4, I5 and I6, engaging I6 with both 5 and I, I already traveling clockwise will drive 5 and its unit 4 and. 3 in the opposite direction by reversing the already engaged member I6, thereby rotating 3 in the opposite direction from 2. Unit I4, I5 and I6 is free running in bearing 8a.
I8, 2|, 22 and 2B are housing screws; I9 and I9a are screws to securely attach drill press post bracket 20 to housing Ila; 23, 24 and 25 are keys for affixing their adjacent parts securely; 26, 21 are ball-bearings fitted freely in shaft ends; Fig. 2, Z indicates the center of a drill press post.
What I claim is:
In a spindle-reversing device, the combination of a housing, driving and driven shafts co-axially aligned and journaled in said housing, two oppositely disposed beveled disc elements upon said driving shaft, one mounted securely to the driving shaft, the other attached to a driven sleeve member rotatable co-axially with said driving shaft and extending along said driving shaft through a housing bearing to receive a securely attached sheave, a beveled composition friction member interposed between said beveled disc elements. a second beveled composition member being mounted securely on a free running shaft within a third bearing in said housing at right angles to driving shaft, said beveled member and free running shaft being free longitudinally to engage with beveled disc elements when pressure is exerted on said free running shaft parallel to the axis of said third bearing, thereby, actuating said beveled disc elements in contrary rotation, and means applied manually and variably upon the driving shaft to effect the engagement and disengagement of said beveled friction member with disc elements.
PAUL M. LLOYD.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS F 'ournier Apr. 4, 1918
US637704A 1945-12-28 1945-12-28 Spindle reversing device for drill presses Expired - Lifetime US2451756A (en)

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US637704A US2451756A (en) 1945-12-28 1945-12-28 Spindle reversing device for drill presses

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588883A (en) * 1950-09-15 1952-03-11 Thomas B Royal Reversing mechanism

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US982530A (en) * 1909-11-15 1911-01-24 Charles M Rhodes Reversible transmission-gearing.
US1006638A (en) * 1910-12-27 1911-10-24 Peter English Direct and reverse driving mechanism.
US1167984A (en) * 1914-12-11 1916-01-11 Daniel L Dodge Driving and reversing mechanism.
US1178226A (en) * 1915-08-18 1916-04-04 William F Fournier Reversing-gear mechanism.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US982530A (en) * 1909-11-15 1911-01-24 Charles M Rhodes Reversible transmission-gearing.
US1006638A (en) * 1910-12-27 1911-10-24 Peter English Direct and reverse driving mechanism.
US1167984A (en) * 1914-12-11 1916-01-11 Daniel L Dodge Driving and reversing mechanism.
US1178226A (en) * 1915-08-18 1916-04-04 William F Fournier Reversing-gear mechanism.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588883A (en) * 1950-09-15 1952-03-11 Thomas B Royal Reversing mechanism

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