US920543A - Eccentric. - Google Patents

Eccentric. Download PDF

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Publication number
US920543A
US920543A US46320108A US1908463201A US920543A US 920543 A US920543 A US 920543A US 46320108 A US46320108 A US 46320108A US 1908463201 A US1908463201 A US 1908463201A US 920543 A US920543 A US 920543A
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Prior art keywords
eccentric
disk
collar
shaft
opening
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Expired - Lifetime
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US46320108A
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Reuben Marshall Clark
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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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/22—Cranks; Eccentrics
    • F16C3/28—Adjustable cranks or eccentrics
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
    • 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
    • Y10T74/211—Eccentric
    • Y10T74/2114—Adjustable
    • Y10T74/2115—Radially

Definitions

  • This invention relates to certain improvements in eccentrics, and more particularly to that type of eccentric illustrated in my previous patent No. 855282, granted May 23, 1907.
  • the object of the invention is to provide an improved construction of eccentric disk, whereby the latter may be more readily removed from a shaft or secured thereto, and whereby the strain on the bolts holding the parts of the disk together is reduced to a minimum.
  • a further object of the invention is to reduce the strain on the bolts securing the eccentric to the collar, by providing the collar and disk with groove and flange connections which resist any turning movement of the eccentric
  • Figure 1 is a side view of the device constructed according to my invention
  • Fig. 2 is an edge view, the eccentric strap being removed
  • Fig. 3 is a view similar to Fig. 2, but taken at right angles theretop
  • Fig. 1 is an end view of the collar
  • Fig. 5 is an end view of the eccentric disk
  • Figs. 6 and 7 are views of the two parts or sections of the eccentric.
  • I provide an eccentric disk 10, formed of separable sections so that itmay be brought into position around a shaft 11 without removing the latter from The eccentric disk is not secured directly to the shaft but is ad justably secured to a collar 12, which latter is rigidly secured to the shaft.
  • the construction, size, or position of the shaft forms no portion of my invention, nor does the specific character of the collar, save in regard to the structure of the face thereof.
  • the collar is provided with an annular flange 14 to which the eccentric disk is secured, and in the face of this flange, and extending across the diameter of the collar, is a groove 15 of a width slightly greater than the diameter of the shaft.
  • the collar carries two bolts 16, 16 parallel to the shaft and disk, at diametrically opposite points, and upon opposite sides of the groove 15. These bolts serve for securing the eccentric disk in position, as will be hereinafter more fully pointed out.
  • My improved eccentric disk is formed of two separate sections 17 and 18 which together inclose the shaft, and which may be rigidly secured together and to the collar.
  • the disk is provided with an elongated opening 19 extending therethrough, one end portion of the opening being concentric with the disk and disposed at the center thereof, and the opposite end portion of the opening being at one side of the center.
  • the opening is of a Width substantially equal to the diameter of the shaft, and the ends of the opening have such a curvature that when the shaft is at one end of the opening the disk will be concentric, but when the shaft is at the opposite end of the opening the disk and shaft will be eccentric.
  • the disk is provided with a flange 20 on one face thereof, and extending across a diameter in the same general direction as the opening 19.
  • This flange is of a width and depth substantially equal to the width and depth of the groove 15, so that when the disk and collar are brought together they may have a relative movement by the sliding of the flange lengthwise of the groove, and this movement will bring about a corresponding relative movement of the shaft and elongated opening 19.
  • the eccentric is provided with two additional elongated openings 21, 21 disposed upon opposite sides of the central opening 19, and each of a width substantially equal to the diameter 0f the bolts 16. These openings are so disposed that when the disk is concentric with the shaft the bolts 16 will extend through the openings 21 at one end thereof, and the tightening of nuts on these bolts will rigidly secure the disk to the collar.
  • the eccentric may be rigidly secured to the collar and have any desired eccentricity in respect to the shaft.
  • the main section 17 of the disk is cut away in the face thereof opposite to the disk and at one side of the center, and is also cut away from the opening 19 to the periphery of the disk in the direction of the length of said opening.
  • the section 18 of the disk is provided with a central body portion 22 which fits into the section 17 to form an end to the opening 19, and this body portion has outwardly extending side flanges 23 which engage with the face of the disk in the cut away portions.
  • the two sections of the disk are secured together by bolts 24 disposed parallel to the bolts 16, and extending through the side flanges 23 of the section 18 and into the body portion of the section 17.
  • the strain tending to separate the two sections is entirely a shearing strain which is resisted by the bolts 24, and furthermore, by the eccentric strap 25 which encircles the disk.
  • the tendency to rotate in respect to the collar is resisted by the flange 20 and groove 15, so that this strain is removed from the bolts 16 and their sole function is to hold the collar and disk against radial or axial movement.
  • the disk may be radially moved while leaying the bolts in position ready for a new dis Having thus described my invention, 1 claim as new and desire to secure by Letters Patent:
  • An eccentric formed of two sections, one of said sections having an elongated opening therein and having a portion of one face thereof adjacent one end of the opening cut away to form recesses, and the other of said sections having a body portion extend ing into one end of said opening and closing the same and having outwardly-extending flanges entering said recesses, and oppositelydisposed bolts extending through said flanges substantially parallel to the axis of the eccentric for securing said sections together.
  • one of said sections having an elongated opening therein and having a portion of one face thereof adjacent one end of the opening cut away to form recesses
  • the other of said sections having a body portion extending into one end of said opening and closing the same and having outwardly-extending flanges entering said recesses, oppositelydisposed bolts extending through said flanges substantially parallel to the axis of the eccentric for securing said sections together
  • the first-mentioned section having elongated openings upon opposite sides of the firstmentioned elongated openings, and bolts extending through last-mentioned openings for securing said eccentric in position and permitting of the varying of its position.

Description

R. M." CLARK.
EGGBNTRIO.
APPLICATION FILED NOV-18, 1908.
- Patented May 4, 1909.
WITNESSES ATTORNEYS its bearin s or 'ournals.
REUBEN MARSHALL CLARK, OF WEBB CITY, MISSOURI.
ECCENTRIC.
Specification of Letters Patent.
Patented May 4, 1909.
Application filed November 18, 1908. Serial No. 463,201.
To all whom it may concern:
Be it known that I, REUBEN MARsHALL CLARK, a citizen of the United States, and a resident of Webb City, in the county of Jasper and State of Missouri, have invented a new and Improved Eccentric, of which the following is a full, clear, and exact description.
This invention relates to certain improvements in eccentrics, and more particularly to that type of eccentric illustrated in my previous patent No. 855282, granted May 23, 1907.
The object of the invention is to provide an improved construction of eccentric disk, whereby the latter may be more readily removed from a shaft or secured thereto, and whereby the strain on the bolts holding the parts of the disk together is reduced to a minimum.
A further object of the invention is to reduce the strain on the bolts securing the eccentric to the collar, by providing the collar and disk with groove and flange connections which resist any turning movement of the eccentric Reference is to'be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.
Figure 1 is a side view of the device constructed according to my invention Fig. 2 is an edge view, the eccentric strap being removed Fig. 3 is a view similar to Fig. 2, but taken at right angles theretopFig. 1 is an end view of the collar; Fig. 5 is an end view of the eccentric disk and Figs. 6 and 7 are views of the two parts or sections of the eccentric.
In the type of eccentric illustrated in the accompanying drawings, I provide an eccentric disk 10, formed of separable sections so that itmay be brought into position around a shaft 11 without removing the latter from The eccentric disk is not secured directly to the shaft but is ad justably secured to a collar 12, which latter is rigidly secured to the shaft. The construction, size, or position of the shaft forms no portion of my invention, nor does the specific character of the collar, save in regard to the structure of the face thereof. I have illustrated a collar formed of two separate sections 18, 18,bolted together to clamp the collar to the shaft, but it is evident that the collar could be formed of a single piece of metal slipped onto the end of the shaft. The collar is provided with an annular flange 14 to which the eccentric disk is secured, and in the face of this flange, and extending across the diameter of the collar, is a groove 15 of a width slightly greater than the diameter of the shaft. The collar carries two bolts 16, 16 parallel to the shaft and disk, at diametrically opposite points, and upon opposite sides of the groove 15. These bolts serve for securing the eccentric disk in position, as will be hereinafter more fully pointed out.
My improved eccentric disk is formed of two separate sections 17 and 18 which together inclose the shaft, and which may be rigidly secured together and to the collar. The disk is provided with an elongated opening 19 extending therethrough, one end portion of the opening being concentric with the disk and disposed at the center thereof, and the opposite end portion of the opening being at one side of the center. The opening is of a Width substantially equal to the diameter of the shaft, and the ends of the opening have such a curvature that when the shaft is at one end of the opening the disk will be concentric, but when the shaft is at the opposite end of the opening the disk and shaft will be eccentric. The disk is provided with a flange 20 on one face thereof, and extending across a diameter in the same general direction as the opening 19. This flange is of a width and depth substantially equal to the width and depth of the groove 15, so that when the disk and collar are brought together they may have a relative movement by the sliding of the flange lengthwise of the groove, and this movement will bring about a corresponding relative movement of the shaft and elongated opening 19. The eccentric is provided with two additional elongated openings 21, 21 disposed upon opposite sides of the central opening 19, and each of a width substantially equal to the diameter 0f the bolts 16. These openings are so disposed that when the disk is concentric with the shaft the bolts 16 will extend through the openings 21 at one end thereof, and the tightening of nuts on these bolts will rigidly secure the disk to the collar. By loosening the nuts the collar may be moved in respect to the shaft, and the bolts will move along the elongated openings 21. Thus the eccentric may be rigidly secured to the collar and have any desired eccentricity in respect to the shaft. The main section 17 of the disk is cut away in the face thereof opposite to the disk and at one side of the center, and is also cut away from the opening 19 to the periphery of the disk in the direction of the length of said opening. The section 18 of the disk is provided with a central body portion 22 which fits into the section 17 to form an end to the opening 19, and this body portion has outwardly extending side flanges 23 which engage with the face of the disk in the cut away portions. The two sections of the disk are secured together by bolts 24 disposed parallel to the bolts 16, and extending through the side flanges 23 of the section 18 and into the body portion of the section 17. By means of this construction the strain tending to separate the two sections is entirely a shearing strain which is resisted by the bolts 24, and furthermore, by the eccentric strap 25 which encircles the disk. The tendency to rotate in respect to the collar is resisted by the flange 20 and groove 15, so that this strain is removed from the bolts 16 and their sole function is to hold the collar and disk against radial or axial movement. As the bolts 16 are carried by the collar, the disk may be radially moved while leaying the bolts in position ready for a new dis Having thus described my invention, 1 claim as new and desire to secure by Letters Patent:
1. In combination, a shaft, a collar secured thereto, an eccentric disk formed of two sections, one of said sections having an elongated opening therein and having a portion of one face thereof cut away, and the other of said sections having a body portion extending into one end of said opening and closing the same and having outwardlyextending flanges in engagement with said cutaway portion, means for locking said sections together, comprising oppositely-disposed bolts extending through said flanges and substantially parallel to the axis of the eccentric, and means for locking said eccentric to said collar and permitting of the movement of the eccentric in respect to the shaft to vary the eccentricity of the former.
2. An eccentric formed of two sections, one of said sections having an elongated opening therein and having a portion of one face thereof adjacent one end of the opening cut away to form recesses, and the other of said sections having a body portion extend ing into one end of said opening and closing the same and having outwardly-extending flanges entering said recesses, and oppositelydisposed bolts extending through said flanges substantially parallel to the axis of the eccentric for securing said sections together.
3. An eccentric formed of two sections,
one of said sections having an elongated opening therein and having a portion of one face thereof adjacent one end of the opening cut away to form recesses, and the other of said sections having a body portion extending into one end of said opening and closing the same and having outwardly-extending flanges entering said recesses, oppositelydisposed bolts extending through said flanges substantially parallel to the axis of the eccentric for securing said sections together, the first-mentioned section having elongated openings upon opposite sides of the firstmentioned elongated openings, and bolts extending through last-mentioned openings for securing said eccentric in position and permitting of the varying of its position.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
REUBEN MARSHALL CLARK.
W'itnesses J. CARROLL BARR, A. D. HATTEN.
US46320108A 1908-11-18 1908-11-18 Eccentric. Expired - Lifetime US920543A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103742592A (en) * 2013-12-27 2014-04-23 汕头三辉无纺机械厂有限公司 Dynamic balance adjusting device of needle machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103742592A (en) * 2013-12-27 2014-04-23 汕头三辉无纺机械厂有限公司 Dynamic balance adjusting device of needle machine
CN103742592B (en) * 2013-12-27 2016-04-20 汕头三辉无纺机械厂有限公司 The dynamic balancing controlling device of needing machine

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