US138947A - Improvement in expanding mandrels - Google Patents

Improvement in expanding mandrels Download PDF

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Publication number
US138947A
US138947A US138947DA US138947A US 138947 A US138947 A US 138947A US 138947D A US138947D A US 138947DA US 138947 A US138947 A US 138947A
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Prior art keywords
collar
mandrel
improvement
piece
expanding
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Expired - Lifetime
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/40—Expansion mandrels
    • B23B31/404—Gripping the work or tool by jaws moving radially controlled by conical surfaces
    • 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
    • Y10T82/00—Turning
    • Y10T82/26—Work driver
    • Y10T82/266—Mandrel
    • Y10T82/268—Expansible

Definitions

  • This invention is applicable to mandrels, burrs, taps, and numerous other tools and work-shop appliances, in which a variable or adjustable diameter is desirable in order to fit them for various sizes or diameters of work. It consists in the combination, with atapering mandrel-piece, of a collar externally cylindrical, but corresponding internally to the taper of the mandrel piece, and slotted alternately from either end in such wise that,
  • the collar may be expanded in a corresponding ratio, and thus brought to any diameter desired.
  • Figure l is a transverse section of an expanding tool made according to my invention.
  • Fig. 2 is a longitudinal section of the same.
  • Fig. 3 is a side view of the same.
  • A is the mandrel-piece, of tapering form and with its ends fitted for attachment to a lathehead, drill-slack, or other device or apparatus whereby the tool is to be put in operation for whatever special purpose the same may be designed.
  • B is a collar, cylindrical externally, but with its bore or interior ofataperin gform, corresponding to the external contour of the mandrel-piece, the collar having, however only a portion of the length of the mandrel-piece, in order that it may be capable of a sliding movement thereon. Extending alternately inward from either end of the collar are longitudinal slots a, those starting from one end terminating in holes or enlargements a near the opposite end.
  • the tapering form of the latter spreads or expands the collar, this being, of course, readily permitted by the slots at.
  • the slots extending equally from each end allow both to expand equally, and thereby, practically, the cylindrical external form of the collar is preserved whatever the extent of expansion.
  • the diameter of the device may be adjusted to any requisite degree or purpose by the simple longitudinal adjustment of the collar upon the mandrel.

Description

.IQD. SMITH.
Expanding Mandrils. N0.138,947. PatentedMay131873.
AM, PHOTU-UTHOGRAPIIIC m H). (OSLMRHES P1200533) IINI'IED STATES PATENT OFFICE.
JAMES D. SMITH, OF NEW YORK, N. Y., ASSIGNOR TO JAMES D. SMITH AND k HUGH It. GARVIN, OF SAME PLACE.
IMPROVEMENT IN EXPANDING MANDRELS.
Specification forming part of Letters Patent No. 138,947, dated May 13, 1873; application filed August 1, 1872.
To all whom it may concern:
Be it known that I, JAMES D. SMITH, of the city, county, and State of New York, have invented an Improvement in Expanding Tools, of which the following is a specification:
This invention is applicable to mandrels, burrs, taps, and numerous other tools and work-shop appliances, in which a variable or adjustable diameter is desirable in order to fit them for various sizes or diameters of work. It consists in the combination, with atapering mandrel-piece, of a collar externally cylindrical, but corresponding internally to the taper of the mandrel piece, and slotted alternately from either end in such wise that,
by thrusting the mandrel-piece through the said collar to a greater or less degree, the collar may be expanded in a corresponding ratio, and thus brought to any diameter desired.
Figure l is a transverse section of an expanding tool made according to my invention. Fig. 2 is a longitudinal section of the same. Fig. 3 is a side view of the same.
A is the mandrel-piece, of tapering form and with its ends fitted for attachment to a lathehead, drill-slack, or other device or apparatus whereby the tool is to be put in operation for whatever special purpose the same may be designed. B is a collar, cylindrical externally, but with its bore or interior ofataperin gform, corresponding to the external contour of the mandrel-piece, the collar having, however only a portion of the length of the mandrel-piece, in order that it may be capable of a sliding movement thereon. Extending alternately inward from either end of the collar are longitudinal slots a, those starting from one end terminating in holes or enlargements a near the opposite end. As the collar is moved from a smaller to a larger part of the mandrel-piece, the tapering form of the latter spreads or expands the collar, this being, of course, readily permitted by the slots at. The slots extending equally from each end allow both to expand equally, and thereby, practically, the cylindrical external form of the collar is preserved whatever the extent of expansion.
In moving the collar from a larger to a smaller part of the mandrel-piece, its own elasticity causes it to contract upon the latter, the slots being narrowed in this case as they were broadened in the other. By this means the diameter of the device may be adjusted to any requisite degree or purpose by the simple longitudinal adjustment of the collar upon the mandrel.
Among many other functions which the invention may be made to-subserve is its use in the construction of expanding mandrels for use in lathes, of expanding boringinstruments, and the like. i
What I claim as my invention is The expanding tool, constituted by the tapering mandrel-piece and the cylindrical collar, formed with a tapering interior and slotted alternately from either end, the two combined and operating substantially as herein set forth.
Witnesses:
FRED. HAYNES, FERD. TUsoH.
JAS. D. SMITH.
US138947D Improvement in expanding mandrels Expired - Lifetime US138947A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2541078A (en) * 1948-09-14 1951-02-13 Armstrong Cork Co Work holder for hollow radially expansible materials
US2615644A (en) * 1950-09-12 1952-10-28 Westinghouse Electric Corp Expanding mandrel
US2717128A (en) * 1952-06-24 1955-09-06 Specialties Dev Corp Yarn package tube holder for winding machines
US2736286A (en) * 1952-03-28 1956-02-28 American Viscose Corp Pipe and flange aligner
US2767677A (en) * 1952-10-30 1956-10-23 Standard Oil Co Jig for welding slip-on flanges
US2767676A (en) * 1952-10-30 1956-10-23 Standard Oil Co Fixture for butt welding flanges
US3055093A (en) * 1958-05-21 1962-09-25 Bendix Corp Sleeve puller
US3214107A (en) * 1964-07-21 1965-10-26 Phelps Dodge Copper Prod Adjustable locking mandrel for spools
US4500046A (en) * 1982-11-22 1985-02-19 Chem-Elec, Inc. Strip material take-up apparatus
WO2014090737A3 (en) * 2012-12-10 2014-10-09 Mt Aerospace Ag Device for clamping and orienting segmented, thin-walled, hollow profiled components, and use thereof

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2541078A (en) * 1948-09-14 1951-02-13 Armstrong Cork Co Work holder for hollow radially expansible materials
US2615644A (en) * 1950-09-12 1952-10-28 Westinghouse Electric Corp Expanding mandrel
US2736286A (en) * 1952-03-28 1956-02-28 American Viscose Corp Pipe and flange aligner
US2717128A (en) * 1952-06-24 1955-09-06 Specialties Dev Corp Yarn package tube holder for winding machines
US2767677A (en) * 1952-10-30 1956-10-23 Standard Oil Co Jig for welding slip-on flanges
US2767676A (en) * 1952-10-30 1956-10-23 Standard Oil Co Fixture for butt welding flanges
US3055093A (en) * 1958-05-21 1962-09-25 Bendix Corp Sleeve puller
US3214107A (en) * 1964-07-21 1965-10-26 Phelps Dodge Copper Prod Adjustable locking mandrel for spools
US4500046A (en) * 1982-11-22 1985-02-19 Chem-Elec, Inc. Strip material take-up apparatus
WO2014090737A3 (en) * 2012-12-10 2014-10-09 Mt Aerospace Ag Device for clamping and orienting segmented, thin-walled, hollow profiled components, and use thereof

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