US215378A - Improvement in mechanical movements - Google Patents

Improvement in mechanical movements Download PDF

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Publication number
US215378A
US215378A US215378DA US215378A US 215378 A US215378 A US 215378A US 215378D A US215378D A US 215378DA US 215378 A US215378 A US 215378A
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Prior art keywords
wheel
teeth
shaft
improvement
star
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    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/12—Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like

Definitions

  • FIG. 1 is a side elevation of the movement embodying my invention.
  • Fig. 2 is a face view thereof.
  • Fig. 3 is a section in line at m, Fig. 5.
  • Fig. 4 is a section in line 3 3 Fig. 5.
  • Fig. 5 is a section in line 2 2, Fig. 3.
  • Fig. 6 is a view of the interior, certain parts being removed.
  • My invention consists of a pawl-and-ratchet mechanism so constructed that the wheel whichcarries the same may be coupled to the supporting-shaft, the power whereof is transmitted elsewhere, and uncoupled therefrom in order to render the shaft inoperative.
  • A represents a cylindrical casing or wheel, which is formed of separate parts a a, the part a being fitted loosely on the shaft B, and the part a firmly secured thereto.
  • ratchet-teeth b which correspond in number with the teeth of a toothed or star wheel, O,which is fitted loosely on the shaft B between the parts a c of the wheel A, and is of less diameter than said wheel.
  • a head or disk D Secured to or formed with the back of the wheel 0 is a head or disk D, which is formed with lugs c projecting from its periphery at opposite places, and on the inner face of the side of the part a of the wheel A is a cavity, E, which is of circular form, to receive the disk D, and extended, as at d, at opposite places to form shoulders e.
  • the lugs 0 enter said extensions, and are adapted to abut against the shoulders c.
  • the width of the extensions d is greater than that of the lugs 0, whereby the latter are permitted to play a limited extent in said extensions d.
  • a pawl, F On the inner face of the part c of the wheel A are guides f, between which is fitted a pawl, F, whose heel is adapted to ride over the teeth of the star-wheel O, and whose nose is adapted to ride over the ratchetteeth 6.
  • the operation is as follows:
  • the star-wheel is the driver, and it is operated by a gearwheel or other means connected to a proper part of the apparatus to which the device is applied, or by the crank or lever G inserted in the opening h.
  • the relation of the teeth of the wheel 0, ratchet-teeth b, and pawl F is such that when the star-wheel O is rotated in one direction the pawl is forced against a shoulder of one of the ratchet-teeth 1), whereby the several parts are coupled and move as one, the shaft B being thereby rotated, and communicating its power to any desired object-such, for instance, as the rotary cutter of a lawn-mower, the shaft of a sewing-machine, 810.
  • the star-wheel O with a head or disk, D, provided with lugs c, and the wheel A, having the cavity E d, substantially as and for the purpose set forth.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Control Devices (AREA)

Description

W LOREY Mechanical-Movement.
No. 215,378. Patented May 13, 1879.
N.PE|ER& PHOTO-LITHOGRAHER, WASHINGTON. D C.
UNITED STATES PATENT CF'FIGE.
WILLIAM LOREY, OF PHILADELPHIA, PENNSYLVANIA.
IMPROVEMENT lN MECHANICAL MOVEMENTS.
Specification forming part of Letters Patent No. 215,378, dated May 13, 1879; application filed April 15, 1879.
lowing specification and accompanying drawin gs, in which- Figure 1 is a side elevation of the movement embodying my invention. Fig. 2 is a face view thereof. Fig. 3 is a section in line at m, Fig. 5. Fig. 4 is a section in line 3 3 Fig. 5. Fig. 5 is a section in line 2 2, Fig. 3. Fig. 6 is a view of the interior, certain parts being removed.
Similar letters of reference indicate corresponding parts in the several figures.
My invention consists of a pawl-and-ratchet mechanism so constructed that the wheel whichcarries the same may be coupled to the supporting-shaft, the power whereof is transmitted elsewhere, and uncoupled therefrom in order to render the shaft inoperative.
For this purpose I employ a star-wheel, which is provided witha shifting head or disk, the operation whereof will be hereinafter fully set forth.
Referring to the drawings, A represents a cylindrical casing or wheel, which is formed of separate parts a a, the part a being fitted loosely on the shaft B, and the part a firmly secured thereto.
0n the inner face of the periphery of the part a there are ratchet-teeth b, which correspond in number with the teeth of a toothed or star wheel, O,which is fitted loosely on the shaft B between the parts a c of the wheel A, and is of less diameter than said wheel.
Secured to or formed with the back of the wheel 0 is a head or disk D, which is formed with lugs c projecting from its periphery at opposite places, and on the inner face of the side of the part a of the wheel A is a cavity, E, which is of circular form, to receive the disk D, and extended, as at d, at opposite places to form shoulders e. The lugs 0 enter said extensions, and are adapted to abut against the shoulders c.
The width of the extensions d is greater than that of the lugs 0, whereby the latter are permitted to play a limited extent in said extensions d.
On the inner face of the part c of the wheel A are guides f, between which is fitted a pawl, F, whose heel is adapted to ride over the teeth of the star-wheel O, and whose nose is adapted to ride over the ratchetteeth 6.
In the side of the part c is an elongated opening, h, and in the wheel 0 is an opening, h, for the attachment of a lever or crank, G, to said wheels 0 when required.
The operation is as follows: The star-wheel is the driver, and it is operated by a gearwheel or other means connected to a proper part of the apparatus to which the device is applied, or by the crank or lever G inserted in the opening h.
The relation of the teeth of the wheel 0, ratchet-teeth b, and pawl F is such that when the star-wheel O is rotated in one direction the pawl is forced against a shoulder of one of the ratchet-teeth 1), whereby the several parts are coupled and move as one, the shaft B being thereby rotated, and communicating its power to any desired object-such, for instance, as the rotary cutter of a lawn-mower, the shaft of a sewing-machine, 810.
Should the star-wheel C be run in the opposite direction, the disk D shifts, bringing the lugs 0 against the respective shoulders c, and so disposing the teeth of said wheel 0 that the pawl F will beforced in andout thereby, and
ride freely over the ratchet-teeth 1) without binding or engagement therewith, whereby no motion is imparted to the shaft B.
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is
1. The ratchet-wheel A a a, shaft 13, starwheel 0, and pawl F, combined and operating substantially'as and for the purpose set forth.
2. The star-wheel O, with a head or disk, D, provided with lugs c, and the wheel A, having the cavity E d, substantially as and for the purpose set forth.
3. The wheel A, fitted on the shaft B, andformed of the separate parts a a, the part at having ratchet-teeth b, in combination with the star-wheel 0, head D, and pawl F, substantially as and for the purpose set forth.
WILLIAM LOREY.
Witnesses:
JOHN A. WmpERsHEIM, H. E. GARsED.
US215378D Improvement in mechanical movements Expired - Lifetime US215378A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620052A (en) * 1947-02-03 1952-12-02 Malte Pontus Blohm Positive clutch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620052A (en) * 1947-02-03 1952-12-02 Malte Pontus Blohm Positive clutch

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