US573779A - John gillespie - Google Patents

John gillespie Download PDF

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Publication number
US573779A
US573779A US573779DA US573779A US 573779 A US573779 A US 573779A US 573779D A US573779D A US 573779DA US 573779 A US573779 A US 573779A
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Prior art keywords
shaft
parts
gillespie
john
attached
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Expired - Lifetime
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/65—Scarf
    • Y10T403/655—Mirror images
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2164—Cranks and pedals

Definitions

  • My invention relates to the shaft to which the crank is attached; and it consists in making the said shaft in two parts, fitted to each other on an oblique line, the object being to avoid the necessity of attaching the crank to the shaft, as is now done, by means of keys, check-nuts, and washers, and at the same time to enable the cranks to be easily removed by a person of little mechanical skill or knowledge.
  • the cranks are attached to the shaft by being brazed thereto and are removed with the portion of the shaft to which they are respectively attached.
  • a perfectfitting joint is formed by means of frictional contact only of the two parts of the shaft.
  • a a are the pedals.
  • a' a' are the cranks attached to one end of the shaft b b'.
  • the shaft is made in two parts and is provided with the cone c, screwed thereto and resting on the ball-bearings (Z CZ. f f are adj usting-nuts, by means of which the bearing against the balls may be adjusted.
  • the cones c and the adj usting-nuts f are provided, respectively, with a right and left screw-thread, so as to prevent any loosening of the joint.
  • the shaft b' made in two parts, as stated, has the plane of its longitudinal meeting surfaces made on a line oblique Serial No. 586,338. (No model.)
  • the two parts of the shaft are made hollow, as shown in the fignre by the broken lines, one section being made hollow throughout and the other having a solid portion at the end, the object being to enable the shaft to be separat-ed by driving apart the Sections by a rod inserted in the hollow section in case the two parts thereof should bind. In such case a small piece of metal is to be inserted, and a slight blow thereon will separate the two parts of the shaft, so that they may be easily taken out.
  • crank-shaft made in two parts each of which has an inclined overlapping end, combined with a frictional sleeve for holding them together, one of the parts of the shaft being hollow and the other having a solid portion against which a rod may be inserted, to drive the cnds apart7 substantially as shown.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Description

(No Model.)
J. GILLESPIE.
BICYGLE.
No. 573,779. Patented Dec. 22, 1896.
UNITED STATES PATENT OFFICE.
J OHN GILLESPIE, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO GEORGE M.
PORTER, oF
SAME PLACE.
BICYCLE.
SPECIFICATION formng part of Letters Patent No. 573,77' 9, dated December 22, 1896.
Application filed April 6 1 8 9 6 To all whom it may concern- Be it known that I, JOHN GILLnsPIE, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Bicycles, of which the following is a specification.
My invention relates to the shaft to which the crank is attached; and it consists in making the said shaft in two parts, fitted to each other on an oblique line, the object being to avoid the necessity of attaching the crank to the shaft, as is now done, by means of keys, check-nuts, and washers, and at the same time to enable the cranks to be easily removed by a person of little mechanical skill or knowledge. The cranks are attached to the shaft by being brazed thereto and are removed with the portion of the shaft to which they are respectively attached. A perfectfitting joint is formed by means of frictional contact only of the two parts of the shaft.
I have shown in the drawing a sectional yiew of my invention.
a a are the pedals.
a' a' are the cranks attached to one end of the shaft b b'. The shaft is made in two parts and is provided with the cone c, screwed thereto and resting on the ball-bearings (Z CZ. f f are adj usting-nuts, by means of which the bearing against the balls may be adjusted. The cones c and the adj usting-nuts f are provided, respectively, with a right and left screw-thread, so as to prevent any loosening of the joint. The shaft b', made in two parts, as stated, has the plane of its longitudinal meeting surfaces made on a line oblique Serial No. 586,338. (No model.)
l to the axis of the shaft, as shown at e. It will be seen that when the two parts are fitted together each will press against the opposite surface of the other, and also bear against the inner surface of the sleeve g, this constant pressure being caused by the action of the planes of the two longitudinal meeting surfaces, which are placed, as stated, on a line oblique to the axes of the two parts of the shaft b b'. The two parts of the shaft are made hollow, as shown in the fignre by the broken lines, one section being made hollow throughout and the other having a solid portion at the end, the object being to enable the shaft to be separat-ed by driving apart the Sections by a rod inserted in the hollow section in case the two parts thereof should bind. In such case a small piece of metal is to be inserted, and a slight blow thereon will separate the two parts of the shaft, so that they may be easily taken out.
XVhat I claim, and desire to secure by Letters Patent, is-
In a bicycle, a crank-shaft made in two parts each of which has an inclined overlapping end, combined with a frictional sleeve for holding them together, one of the parts of the shaft being hollow and the other having a solid portion against which a rod may be inserted, to drive the cnds apart7 substantially as shown.
JOHN GILLESPIE.
Vitnesses:
J. L. RocHE, CHAS. II. DREw.
US573779D John gillespie Expired - Lifetime US573779A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490316A (en) * 1946-10-23 1949-12-06 Ostrak Joseph Universal electrical connector
US2495691A (en) * 1945-09-12 1950-01-31 Linn S Brennan Control unit
US2607055A (en) * 1947-05-03 1952-08-19 Starkel Joseph Tapping tool
US6829965B1 (en) 1999-05-28 2004-12-14 Bruno Mombrinie Two-piece bicycle crank set
EP1792818A1 (en) * 2005-12-02 2007-06-06 Campagnolo S.R.L. Shaft element and pedal crank of a Bicycle bottom bracket, crank assembly comprising such a shaft element and pedal crank and method for assembling the crank assembly

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495691A (en) * 1945-09-12 1950-01-31 Linn S Brennan Control unit
US2490316A (en) * 1946-10-23 1949-12-06 Ostrak Joseph Universal electrical connector
US2607055A (en) * 1947-05-03 1952-08-19 Starkel Joseph Tapping tool
US6829965B1 (en) 1999-05-28 2004-12-14 Bruno Mombrinie Two-piece bicycle crank set
EP1792818A1 (en) * 2005-12-02 2007-06-06 Campagnolo S.R.L. Shaft element and pedal crank of a Bicycle bottom bracket, crank assembly comprising such a shaft element and pedal crank and method for assembling the crank assembly
US20070151410A1 (en) * 2005-12-02 2007-07-05 Campagnolo S.R.L. Shaft element and crank arm of a bicycle bottom bracket assembly, crank arm assembly comprising such a shaft element and crank arm and method for assembling the crank arm assembly

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