Patent US3749507A successfully refreshed from Google Patents.
US3749507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable horizontal hole drilling apparatus
Assignee: LERCO Corp 1040 EAST MAIN STREET PO BOX 32890 LOUISVILLE KENTUCKY 40232 A CORP OF KENTUCKY
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Filing: 1971-12-27
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Granted: 1973-07-31
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Expires: 1991-12-27
Abstract
Abstract Adjustable horizontal hole drilling apparatus for simultaneous drilling of a plurality of holes in work pieces such as steel beams and the like, wherein reciprocably movable horizontally opposed heads mount drills in horizontally opposed movable relationship for operating engagement with opposite sides of the work piece, the drills being positionally vertically adjustable conjointly and severally, and wherein work piece hold down and element clamping means are provided. The apparatus is especially suited for, although not restricted to, drilling of holes in Ibeam flanges.
Inventors
- 👤 E Haley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:26
CPC Classifications
B; B23; B23B; B23B39/00; B23B39/16; B23B39/161; B23B39/165; B23B39/22; Y; Y10; Y10T; Y10T408/00; Y10T408/36; Y10T408/38; Y10T408/3811; Y10T408/385
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
346 words
An adjustable horizontal hole drilling apparatus comprising: A. a head; B. vertically spaced drill bits operatively mounted in horizontal drilling positions on said head; C. drive means for said drill bits; D. means for conjointly vertically adjusting the position of said drill bits to adjusted drilling positions with respect to a workpiece to be drilled; E. means for severally vertically adjusting the positions of said drill bits with respect to one another to adjusted spaced drilling positions with respect to a workpiece to be drilled, including: i. horizontally disposed upper and lower spindle blocks; ii. said spindle blocks operatively mounting said drill bits; iii. said spindle blocks respectively having therein oppositely threaded bores; iv. a plurality of rods having spaced threads thereon respectively coactable with the oppositely threaded bores in the respective spindle blocks; and v. means for simultaneously collectively rotating said rods whereby, through inter-engagement and coaction of said threaded portions in said oppositely threaded bores the spindle blocks are moved toward or away from one another to thereby vertically adjust the positions of said drill bits with respect to one another to vertically adjusted spaced drilling positions with respect to the workpiece to be drilled; F. said rotating means for said rods including: i. sprockets fixed to said rods; ii. a rotatably mounting adjusting shaft; iii. a sprocket on said shaft; and iv. a chain operatively engaged with all said sprockets on said rods and said shaft whereby upon rotation of said shaft all said rods are simultaneously rotated; G. a support plate; H. a center line adjustment lifting/lowering plate spaced from said support plate; I. a plurality of rods rotatably mounted on said support plate having threaded end portions engaged in threaded bores in said lifting/lowering plate; J. said severally adjusting rods threadedly engaged in said spindle blocks being vertically fixed with respect to said lifting/lowering plate; and K. means for simultaneously rotating said rods in said bores in said lifting/lowering plate, rotation of said rods vertically lifting or lowering said plate and together therewith said spindle blocks and drill bits carried thereby.
Claim 2
Dependent Claim
346 words
An adjustable horizontal hole drilling apparatus comprising: A. a head; B. vertically spaced drill bits operatively mounted in horizontal drilling positions on said head; C. drive means for said drill bits; D. means for conjointly vertically adjusting the position of said drill bits to adjusted drilling positions with respect to a workpiece to be drilled; E. means for severally vertically adjusting the positions of said drill bits with respect to one another to adjusted spaced drilling positions with respect to a workpiece to be drilled, including: i. horizontally disposed upper and lower spindle blocks; ii. said spindle blocks operatively mounting said drill bits; iii. said spindle blocks respectively having therein oppositely threaded bores; iv. a plurality of rods having spaced threads thereon respectively coactable with the oppositely threaded bores in the respective spindle blocks; and v. means for simultaneously collectively rotating said rods whereby, through inter-engagement and coaction of said threaded portions in said oppositely threaded bores the spindle blocks are moved toward or away from one another to thereby vertically adjust the positions of said drill bits with respect to one another to vertically adjusted spaced drilling positions with respect to the workpiece to be drilled; F. said rotating means for said rods including: i. sprockets fixed to said rods; ii. a rotatably mounting adjusting shaft; iii. a sprocket on said shaft; and iv. a chain operatively engaged with all said sprockets on said rods and said shaft whereby upon rotation of said shaft all said rods are simultaneously rotated; G. a support plate; H. a center line adjustment lifting/lowering plate spaced from said support plate; I. a plurality of rods rotatably mounted on said support plate having threaded end portions engaged in threaded bores in said lifting/lowering plate; J. said severally adjusting rods threadedly engaged in said spindle blocks being vertically fixed with respect to said lifting/lowering plate; and K. means for simultaneously rotating said rods in said bores in said lifting/lowering plate, rotation of said rods vertically lifting or lowering said plate and together therewith said spindle blocks and drill bits carried thereby.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |