US557612A - Stop-motion - Google Patents

Stop-motion Download PDF

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US557612A
US557612A US557612DA US557612A US 557612 A US557612 A US 557612A US 557612D A US557612D A US 557612DA US 557612 A US557612 A US 557612A
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wheel
bracket
rim
arm
motion
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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
    • F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
    • F16D41/064—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls
    • F16D41/066—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical
    • F16D41/067—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical and the members being distributed by a separate cage encircling the axis of rotation
    • 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
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1558—Grip units and features
    • Y10T74/1587—Grip features

Definitions

  • DAVID C. RYDER OF CATSKILL, NEIV YORK, ASSIGNOR TO JOHN N. BRIGGS, OF COEYMANS, NEIV YORK.
  • Fig. 2 is a de tached plan view of the end of the detent-arm.
  • Fig. 3 is an enlarged longitudinal section of the bracket secured to the end of the detentarm, the spur-wheel on which the stop-motion operates being broken out to expose underlying parts.
  • Fig. 4 is a horizontal section of Fig. 3 at the irregular line X X, showing the upper side of the head of the bracket.
  • Fig. 5 is a transverse section of Fig. i at the line Y Y.
  • Figs. 6 and 7 are horizontal sections of the head of the bracket, showing modifications of the gripping mechanism.
  • A is a detent-arm having one end pivotally secured to a side piece 1 of an ice-elevator.
  • B is a spur-wheel secured to a sprocketwheel shaft 2, said sprocket-wheels. to prevent confusion, not being shown.
  • C is a pinion secured to a driving-shaft 3, and meshing into the spur-wheel B.
  • Said driving-shaft is usually driven by a belt l, (indicated by dotted lines in Fig. 1,) and D is a bracket secured to the free end of the detent-arm A.
  • the free end of the detent-arm A should be held by adjustable guys 5 or other suitable means from bearing on the teeth of the spun wheel B, and thus an unnecessary wear of the parts will be avoided.
  • the guys 5 can be attached to some adjacent overhead parts of the structure or housing of the machine, and said guys should be arranged so as to effect an adjustment of the outer extremity of the detent-arni A in respect to the center of the wheel B, and to prevent a swaying movement of said arm.
  • Said guys can be attached to a rib 6 of the bracket D or to any suitable part or attachment of the detent-arm. The latter is arranged in relation to the sp ur-wheel B in such manner that when said wheel is revolving in the direction indicated by the arrow in Fig.
  • the arm A may be made of wood or any suitable material with the metallic bracket D secured thereto, substantially as shown in the drawings; but when said arm is made of metal, which in some cases is preferable, the arm and bracket can be integral.
  • the bracket D has parallel side flanges 7, which are spaced apart sufficiently to allow the rim of the wheel B to pass freely between them.
  • each side flange is provided with a chamber 8 whose inner face has two inclined planes 9 which, in the opposite flanges, incline toward each other as they approach the fixed end of the arm A.
  • the top and bottom faces of each chamber are each provided with a lip 10, which forms a retainer for keeping spherical rollers 11 in each compartment of the chamber, said compartments corresponding in length to the inclined plane that forms the inner face of the compartment.
  • Each lip is provided with a cut-out 12 that allows a roller 11 to be inserted in the deeper end of the corresponding compartment.
  • the inclined planes 9 are arranged in such manner that, with the rollers in the deepest part of the compartments and the wheel 13 being rotated in the proper direction, the rim of said wheel will pass between said rollers without frictional contact therewith; but immediately on the reversal of the direction of ICO movement of said wheel the rollers 11 will move toward the narrower part of the compartments and be forced against the opposite edges of the rim of the wheel B and grip said rim with such tenacity that said wheel will be held immovably thereby until a reversal of the direction of movement of said wheel returns said rollers to the deeper part of the compartments, whereupon the wheel B will be left free to revolve in the proper direction.
  • adjustable bearing-pins 13 are inserted in the side flanges of the bracket D to bear against the sides of the rim of said wheel.
  • Said bearing-pins are preferably made of wood, and they may be either screwed or driven into holes formed for that purpose in the side flanges 7, and as the inner ends of said bearing-pins become worn away the bearing-pins can be readjusted to bear against the edges of the rim of the wheel.
  • the end of the bracket of each form herein shown and described is provided with lugs 14, to which a safety-check E can be attached.
  • Said safety-check is designed to operate in case when from any cause the rollers 11, or other clamping mechanisms herein shown and described, may fail to prevent the wheel B from revolving in the wrong direction; and it consists of arms 15, which extend from the end of the bracket, and tilting levers 16, which are loosely fitted to oscillate on an arbor 17 attached to said arms.
  • the posterior arms 18 ofsaid levers are arranged to bear upon the teeth of the wheel B, and preferably they are of sufficient length to bear simultaneously upon two of said teeth, so as to prevent the opposite ends of said levers from being raised above their proper position.
  • the anterior arms 19 of said levers are connected by a cross-bar 20 whose lower part inclines outwardly, so as to allow the teeth of the wheel B, when the latter is revolving in the proper direction, to raise the anterior end of the levers 16, and when said wheel begins to revolve in the contrary direction the cross-bar 20 will engage with the advancing side of a tooth of said wheel and be carried down to the bottom of the space between two adjacent teeth and thereby positively prevent the wheel from revolving farther in that direction.
  • the arms 19 are bent to form an opening 21 which, when the levers 16 are tilted to carry the cross-bar 20 into a space between two of the teeth, will allow a tooth of the wheel to enter therein, as indicated by dotted lines in Fig. 3.
  • the pivot on which the levers 16 are arranged to oscillate is located in relation to a shoulder 22 on each of said levers, so that the latter will acquire a slight oscillatory motion when said shoulders are about midway between two adjacent teeth of the wheel B, and thereby the cross-bar 20 will be carried into a position where it will take against a tooth of the wheel B in case the latter is revolving in the wrong direction, and said wheel will be positively stopped in the manner above described.
  • the levers 16 On resuming the motion of said wheel in the proper direction the succeeding tooth of the wheel B will take against the inner side of the cross-bar 20, and, by the angularity of the latter, the levers 16 will be re stored to their normal position, so that the wheel B can be revolved in the proper direc tion.
  • the bracket D' is provided with chambers 23,which are substantially the same as those previously described in respect to Fig. 5; but instead of the spherical rollers shown in the last-named figure wedgeshaped blocks 24 are inserted in said chambers to bear against the faces of the inclined planes 25, with the adjacent faces of said blocks slightly touching the edges of the rim of the wheel B without interfering with the latter when revolving in the proper direction,but when said wheel begins to re-' volve in the wrong direction the blocks 2% will be automatically moved toward the shallower part of said chambers until they immovably clamp the wheel B, and in this manner they effect the result described in respect to the said spherical rollers.
  • the bracket D is provided with chambers 26, in which cams or disks 27 are pivoted eccentrically and arranged in such manner that, when the wheel B begins to revolve in the wrong direction, the fuller part of said disks will be carried to bear with exceeding pressure against the edges of the wheel-rim, and thereby the motion of said wheel will be stopped.
  • Each disk 27 has its periphery provided with an angular projection 28 to prevent its being rotated too far in either direction, said projection taking against the rim of the wheel B when the disk is rotated in one direction and against the back of a chamber 26 when rotated in the opposite direction, but in either case the rotations ofthe disk will be stopped by said projection.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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Description

(No Model.
D.G.RYDER.
' STOP MOTION.
N0.g 57,612. Pate nted Apr. 7 1896.
"\EQE Z m 5 Mfifizesses I fiveflibr:
M a David G122 (Zar W fWMLCWQ fi UNITED STATES PATENT OF ICE.
DAVID C. RYDER, OF CATSKILL, NEIV YORK, ASSIGNOR TO JOHN N. BRIGGS, OF COEYMANS, NEIV YORK.
STOP-MOTION.
SPECIFICATION forming part of Letters Patent No. 557,612, dated April 7, 1896.
Application filed May 12, 1894. Serial No. 511,002. (No model.)
Catskill, in the county of Greene and State.
of New York, have invented a new and useful Stop-Motion for Preventing Machinery being Rotated in a IVrong Direction, of which the following is a specification.
In many classes of machines, but especially in machines used for elevating cakes of ice, much damage is done by the reversal of the direction of the moving parts of the machine, which reversal may be occasioned by the slipping or breaking of driving-belts, overloading the machine beyond its capacity, and by many other causes, or the machine may be carelessly started in a direction contrary to the one it is designed to be run; and the object of my invention is to prevent a machine from being rotated in a wrong direction. This object I attain by the mechanism illustrated in the accompanying drawings, which are herein referred to and form part of this specification, and in which Figure 1 is a side elevation of my invention as applied to an ice-elevator, only a portion of the latter being shown. Fig. 2 is a de tached plan view of the end of the detent-arm. Fig. 3 is an enlarged longitudinal section of the bracket secured to the end of the detentarm, the spur-wheel on which the stop-motion operates being broken out to expose underlying parts. Fig. 4 is a horizontal section of Fig. 3 at the irregular line X X, showing the upper side of the head of the bracket. Fig. 5 is a transverse section of Fig. i at the line Y Y. Figs. 6 and 7 are horizontal sections of the head of the bracket, showing modifications of the gripping mechanism.
As represented in the drawings, A is a detent-arm having one end pivotally secured to a side piece 1 of an ice-elevator.
B is a spur-wheel secured to a sprocketwheel shaft 2, said sprocket-wheels. to prevent confusion, not being shown.
C is a pinion secured to a driving-shaft 3, and meshing into the spur-wheel B. Said driving-shaft is usually driven by a belt l, (indicated by dotted lines in Fig. 1,) and D is a bracket secured to the free end of the detent-arm A.
The free end of the detent-arm A should be held by adjustable guys 5 or other suitable means from bearing on the teeth of the spun wheel B, and thus an unnecessary wear of the parts will be avoided. IVhen the guys 5 are used, they can be attached to some adjacent overhead parts of the structure or housing of the machine, and said guys should be arranged so as to effect an adjustment of the outer extremity of the detent-arni A in respect to the center of the wheel B, and to prevent a swaying movement of said arm. Said guys can be attached to a rib 6 of the bracket D or to any suitable part or attachment of the detent-arm. The latter is arranged in relation to the sp ur-wheel B in such manner that when said wheel is revolving in the direction indicated by the arrow in Fig. 1, its fixed end will be in a position to resist a pulling strain, if such a strain should be exerted on said arm. The arm A may be made of wood or any suitable material with the metallic bracket D secured thereto, substantially as shown in the drawings; but when said arm is made of metal, which in some cases is preferable, the arm and bracket can be integral.
The bracket D has parallel side flanges 7, which are spaced apart sufficiently to allow the rim of the wheel B to pass freely between them. In the forms of said bracket shown in Figs. 4 and 6 each side flange is provided with a chamber 8 whose inner face has two inclined planes 9 which, in the opposite flanges, incline toward each other as they approach the fixed end of the arm A. In the form shown in Fig. 5 the top and bottom faces of each chamber are each provided with a lip 10, which forms a retainer for keeping spherical rollers 11 in each compartment of the chamber, said compartments corresponding in length to the inclined plane that forms the inner face of the compartment. Each lip is provided with a cut-out 12 that allows a roller 11 to be inserted in the deeper end of the corresponding compartment. The inclined planes 9 are arranged in such manner that, with the rollers in the deepest part of the compartments and the wheel 13 being rotated in the proper direction, the rim of said wheel will pass between said rollers without frictional contact therewith; but immediately on the reversal of the direction of ICO movement of said wheel the rollers 11 will move toward the narrower part of the compartments and be forced against the opposite edges of the rim of the wheel B and grip said rim with such tenacity that said wheel will be held immovably thereby until a reversal of the direction of movement of said wheel returns said rollers to the deeper part of the compartments, whereupon the wheel B will be left free to revolve in the proper direction. For the purpose of maintaining the bracket D in a proper position in respect to the rim of the wheel B, adjustable bearing-pins 13 are inserted in the side flanges of the bracket D to bear against the sides of the rim of said wheel. Said bearing-pins are preferably made of wood, and they may be either screwed or driven into holes formed for that purpose in the side flanges 7, and as the inner ends of said bearing-pins become worn away the bearing-pins can be readjusted to bear against the edges of the rim of the wheel.
Preferably the end of the bracket of each form herein shown and described is provided with lugs 14, to which a safety-check E can be attached. Said safety-check is designed to operate in case when from any cause the rollers 11, or other clamping mechanisms herein shown and described, may fail to prevent the wheel B from revolving in the wrong direction; and it consists of arms 15, which extend from the end of the bracket, and tilting levers 16, which are loosely fitted to oscillate on an arbor 17 attached to said arms. The posterior arms 18 ofsaid levers are arranged to bear upon the teeth of the wheel B, and preferably they are of sufficient length to bear simultaneously upon two of said teeth, so as to prevent the opposite ends of said levers from being raised above their proper position. The anterior arms 19 of said levers are connected by a cross-bar 20 whose lower part inclines outwardly, so as to allow the teeth of the wheel B, when the latter is revolving in the proper direction, to raise the anterior end of the levers 16, and when said wheel begins to revolve in the contrary direction the cross-bar 20 will engage with the advancing side of a tooth of said wheel and be carried down to the bottom of the space between two adjacent teeth and thereby positively prevent the wheel from revolving farther in that direction. The arms 19 are bent to form an opening 21 which, when the levers 16 are tilted to carry the cross-bar 20 into a space between two of the teeth, will allow a tooth of the wheel to enter therein, as indicated by dotted lines in Fig. 3.
The pivot on which the levers 16 are arranged to oscillate is located in relation to a shoulder 22 on each of said levers, so that the latter will acquire a slight oscillatory motion when said shoulders are about midway between two adjacent teeth of the wheel B, and thereby the cross-bar 20 will be carried into a position where it will take against a tooth of the wheel B in case the latter is revolving in the wrong direction, and said wheel will be positively stopped in the manner above described. On resuming the motion of said wheel in the proper direction the succeeding tooth of the wheel B will take against the inner side of the cross-bar 20, and, by the angularity of the latter, the levers 16 will be re stored to their normal position, so that the wheel B can be revolved in the proper direc tion.
In the modification shown in Fig. 6 the bracket D'is provided with chambers 23,which are substantially the same as those previously described in respect to Fig. 5; but instead of the spherical rollers shown in the last-named figure wedgeshaped blocks 24 are inserted in said chambers to bear against the faces of the inclined planes 25, with the adjacent faces of said blocks slightly touching the edges of the rim of the wheel B without interfering with the latter when revolving in the proper direction,but when said wheel begins to re-' volve in the wrong direction the blocks 2% will be automatically moved toward the shallower part of said chambers until they immovably clamp the wheel B, and in this manner they effect the result described in respect to the said spherical rollers.
I11 the modification shown in Fig. 7 the bracket D is provided with chambers 26, in which cams or disks 27 are pivoted eccentrically and arranged in such manner that, when the wheel B begins to revolve in the wrong direction, the fuller part of said disks will be carried to bear with exceeding pressure against the edges of the wheel-rim, and thereby the motion of said wheel will be stopped. Each disk 27 has its periphery provided with an angular projection 28 to prevent its being rotated too far in either direction, said projection taking against the rim of the wheel B when the disk is rotated in one direction and against the back of a chamber 26 when rotated in the opposite direction, but in either case the rotations ofthe disk will be stopped by said projection.
hat I claim as my invention, and desire to secure by Letters Patent, is-- 1. The combination of arevoluble wheel, B, a detent-arm, A, having one of its ends pivoted to the housing of said wheel and its opposite end supported by adjustable guys, 5, and a head, D, secured to the adjustable end of the detent-arm and provided with side flanges, 7 ,which pass down loosely at each side of the rim of said wheel; each of said flanges being provided with a chamber, 8, and gripping mechanism tlierein-substantially as shown and described-adapted to grip the rim of said wheel when rotating in the wrong direction, as herein specified.
2. The combination of a revoluble wheel,B, a detent-arm, A, having one end pivoted to the housing for said wheel and its opposite end supported by adjustable guys, 5, and provided with ahead, D, having side flanges, 7,
side flanges, 7, gripping means in said head, and bearing-pins, 13, inserted in said flanges and adjustable from and toward each other; said bearingpins being arranged to bear against opposite sides of the rim of the wheel B to retain the head D in position in respect to the rim of said Wheel, as and for the purpose specified.
DAVID C. RYDER. W'itnesses:
JOEL NELSON, PLATT S. WHEAT.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504571A (en) * 1944-11-13 1950-04-18 Casablancas High Draft Co Ltd One-way brake for textile machinery
US3403762A (en) * 1966-06-13 1968-10-01 Renault Freewheel devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504571A (en) * 1944-11-13 1950-04-18 Casablancas High Draft Co Ltd One-way brake for textile machinery
US3403762A (en) * 1966-06-13 1968-10-01 Renault Freewheel devices

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