US108515A - Improvement in back-lashes for mill-gearing - Google Patents

Improvement in back-lashes for mill-gearing Download PDF

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US108515A
US108515A US108515DA US108515A US 108515 A US108515 A US 108515A US 108515D A US108515D A US 108515DA US 108515 A US108515 A US 108515A
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improvement
springs
lashes
gearing
mill
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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
    • 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
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
    • F16F15/123—Wound springs
    • F16F15/1232—Wound springs characterised by the spring mounting
    • F16F15/1234—Additional guiding means for springs, e.g. for support along the body of springs that extend circumferentially over a significant length
    • 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
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
    • F16D3/64—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic elements arranged between substantially-radial walls of both coupling parts
    • F16D3/66—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic elements arranged between substantially-radial walls of both coupling parts the elements being metallic, e.g. in the form of coils

Definitions

  • Figure l of the-drawing is a representation of a central vertical section of my invention.
  • Figure 2 is a perspective view of the same.
  • Figure 3 is a view of the spring-case, with drivingplate removed.
  • My invention relates to an improvement in means for preventing the back-lash or irregular movement of' millstones.
  • the letter A of the drawing designates the drivingplate, secured firmly to the pinion B, which is loose upon the shaft O ot' the millstone.
  • the forked lugs d To the under side ot the plate A are secured the forked lugs d, arranged to engage with the semi'- cirenlar springs hereinafter' described.
  • E represents the lower case, which contains the springs, and rotates with the shaft oi' the millstone, to which it is firmly keyed.
  • F designates the circular' chamber in which the springs lie. This chamber is rectangular' in-its crosssection, and the object of giving it this form is to obviate as much as possible the friction of the walls against the springs.
  • G is the central sleeve, which embraces the shaft. 1t is-designe'd to project upward through the drivingplate A, and to form a bearing for the pinion B, thereby sustaining its weight and that of the drivingplate A, and thus in an important manner lessening the friction.
  • the chamber 11 is subdivided into two semicircular compartments by the slotted partition-plates h, securely attached to the'lateral walls of the chamber.
  • H H represent the coiled springs which operate to prevent the back-lash. They are designed to extend from one partition, li., to the other, a distance of one hundred and eighty degrees. The ends of these two semicircnlar springs are secured together by means of the coupling K.
  • This coupling consists of two vertical cheeks, l l, connect'ed at their lower ends by a plate, m, notched at each side to admit the edges of the slot of Vthe partition-plate h. 'lhey are also connected at the top by a cross-bar, n.
  • each coil-spring is turned within the cheek which lies on they same side of the partition h.
  • the springs are secured iirmly together at their ends.
  • the spring-case E provided with the sleeve G, projecting above the driving-plate to form a bearing for the loose pinion B, as an improvement in machinery for preventing back-lash, as specified.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Inl/@mmm N. PETERS, PHOTO-LITHOGRAPHER, WASHINGYON. |16.
N. PETERS. PHOTO LTHOGRAPMER m W m dimitri tate JOHN L. POST, OF ASHLEY, ILLINOIS.
Letters Patent No. 108,515, dated October 18, 1870.
IMPROVEMENT iN eAcK-LAsHES FOR MILL-GEARING.
i The Schedule referred to in these Letters Patent and making part of the same.
To all whom it may concern Be it known that I, J OHN L. Ios'r, of Ashley, in the county of iVashington and State ot' Illinois, have invented a new and valuable Improvement in Devices forPrcventing Back-Lash, and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the saine, reference being had to the annexed drawing making a pai-tof this specification, and to the letters and figures of reference marked thereon.
Figure l of the-drawing is a representation of a central vertical section of my invention.
Figure 2 is a perspective view of the same.
Figure 3 is a view of the spring-case, with drivingplate removed.
Figures 4, 5, and 6 are details.
My invention relates to an improvement in means for preventing the back-lash or irregular movement of' millstones; and
It consists in the construction and novel arrangement of devices designed to increase the action of the springs, to prevent undue friction, and to sustain the weight of the false pinion.
The letter A of the drawing designates the drivingplate, secured firmly to the pinion B, which is loose upon the shaft O ot' the millstone.
To the under side ot the plate A are secured the forked lugs d, arranged to engage with the semi'- cirenlar springs hereinafter' described.
E represents the lower case, which contains the springs, and rotates with the shaft oi' the millstone, to which it is firmly keyed.
F designates the circular' chamber in which the springs lie. This chamber is rectangular' in-its crosssection, and the object of giving it this form is to obviate as much as possible the friction of the walls against the springs.
G is the central sleeve, which embraces the shaft. 1t is-designe'd to project upward through the drivingplate A, and to form a bearing for the pinion B, thereby sustaining its weight and that of the drivingplate A, and thus in an important manner lessening the friction.
The chamber 11 is subdivided into two semicircular compartments by the slotted partition-plates h, securely attached to the'lateral walls of the chamber.
H H represent the coiled springs which operate to prevent the back-lash. They are designed to extend from one partition, li., to the other, a distance of one hundred and eighty degrees. The ends of these two semicircnlar springs are secured together by means of the coupling K. This coupling consists of two vertical cheeks, l l, connect'ed at their lower ends by a plate, m, notched at each side to admit the edges of the slot of Vthe partition-plate h. 'lhey are also connected at the top by a cross-bar, n.
The end of each coil-spring is turned within the cheek which lies on they same side of the partition h. Thus the springs are secured iirmly together at their ends.
At about the middle of each spring ,a set-olf, s, or horizontal extension of the coil-wire, is formed. On each side of this set-off descend the ends of the forked lugs d of the driving-plate A, thus formingthe engagement between this plate and the springs.
What I claim as my invention, anddesire to secure by Letterslatent, is`
1. The spring-case E, provided with the sleeve G, projecting above the driving-plate to form a bearing for the loose pinion B, as an improvement in machinery for preventing back-lash, as specified.
2. The semicircnlar springs H, connected by the coupling-slides K, and each provided with the set-oiIr s at about its middle portion, in combination with the transverely-rectanguiar' spring-chamber F, having the slotted partition h., and 'with the drivingplate A provided with the forked lugs d, substantially as shown and described, and for the .purposes Y specified.
In testimony that I claim the above, I have hereunto subscribed my name in the presence of two wit- DCSSGS.
' J N O. L. POST.
Witnesses:
J As. M. DURHAM, J No. T. SHOWALTER.
US108515D Improvement in back-lashes for mill-gearing Expired - Lifetime US108515A (en)

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