US2686602A - Cushioning mechanism for railway vehicles - Google Patents

Cushioning mechanism for railway vehicles Download PDF

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Publication number
US2686602A
US2686602A US150473A US15047350A US2686602A US 2686602 A US2686602 A US 2686602A US 150473 A US150473 A US 150473A US 15047350 A US15047350 A US 15047350A US 2686602 A US2686602 A US 2686602A
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US
United States
Prior art keywords
cushioning
compensating
follower
yoke
followers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US150473A
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English (en)
Inventor
Willison Donald
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Malleable and Steel Castings Co
Original Assignee
National Malleable and Steel Castings Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL91965D priority Critical patent/NL91965C/xx
Priority to BE539640D priority patent/BE539640A/xx
Priority to BE501956D priority patent/BE501956A/xx
Priority to NL91366D priority patent/NL91366C/xx
Priority to NL91365D priority patent/NL91365C/xx
Application filed by National Malleable and Steel Castings Co filed Critical National Malleable and Steel Castings Co
Priority to US150473A priority patent/US2686602A/en
Priority to US182749A priority patent/US2640602A/en
Priority to US182750A priority patent/US2640603A/en
Priority to GB23807/53A priority patent/GB722309A/en
Priority to GB6262/51A priority patent/GB703638A/en
Priority to FR1046573D priority patent/FR1046573A/fr
Priority to CH312021D priority patent/CH312021A/fr
Priority to DEN3643A priority patent/DE941913C/de
Application granted granted Critical
Publication of US2686602A publication Critical patent/US2686602A/en
Priority to GB19534/55A priority patent/GB778341A/en
Priority to DEN10893A priority patent/DE1036983B/de
Priority to CH334178D priority patent/CH334178A/de
Priority to FR1166418D priority patent/FR1166418A/fr
Priority to US520811A priority patent/US2898530A/en
Priority to US566254A priority patent/US2898520A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/40—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers consisting of a stack of similar elements separated by non-elastic intermediate layers
    • F16F1/406—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers consisting of a stack of similar elements separated by non-elastic intermediate layers characterised by the shape of the elastic elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G9/00—Draw-gear
    • B61G9/04—Draw-gear combined with buffing appliances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G9/00—Draw-gear
    • B61G9/04—Draw-gear combined with buffing appliances
    • B61G9/06—Draw-gear combined with buffing appliances with rubber springs
    • 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
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53613—Spring applier or remover
    • Y10T29/53617—Transmission spring

Definitions

  • My invention relates to railway draft rigging and more particularly to cushioning mechanism therefor, of the compensating type.
  • Draft gear pockets and yokes are generally used in the as cast or as fabricated condition and are therefore subject to substantal tolerances as to length. Consequently the conventional draft gear may fit loosely in the pocket or in the yoke. This resulting free slack is particularly objectionable in passenger cars as it is a source of constant noise and contributes to the hard riding of the cars.
  • the compensating cushioning units thereof react against the yoke in opposite directions, the yoke floating between the opposed units and thus completely eliminating the undesirable effects of initial compression.
  • one of the compensating cushioning units compresses under pulling load and expands under buffing load, while the other compensating unit operates in opposition to it.
  • a main cushioning unit which is assembled between the front and rear stops of the draft gear pocket under initial compression greater than that under which the compensating units are assembled.
  • This main cushioning unit is compressed both in draft and in buff, operating in series with one or the other of the compensating units Whenever the load on the draft gears exceeds the initial compression under which the main cushioning unit is assembled.
  • the present invention provides an improved cushioning mechanism of the compensating type which is of a more simplified construction than that of the above mentioned application.
  • Fig. 1 is a longitudinal horizontal sectional view of a cushioning mechanism embodying my invention.
  • Fig. 2 is a side elevational view, partly in section, of the mechanism shown in Fig. 1.
  • Fig. 3 is a view corresponding to Fig. l but showing the mechanism subjected to a draft force.
  • Fig. 4 is a fragmentary view showing the mechanism under the same draft force as in Fig. 3.
  • Fig. 5 is a graph illustrating the load-travel characteristics of the cushioning mechanism.
  • Fig. 6 is a plan view, partly in section, of modified form of the invention.
  • Fig. 7 is a side elevational view, partly in section, of the mechanism shown in Fig. 6.
  • Fig. 8 is a sectional view taken along line 88 of Fig. 7, looking in the direction of the arrows.
  • Fig. 9 is a sectional view taken along line 99 of Fig. 7, looking in the direction of the arrows.
  • Fig. 10 is a fragmentary view taken along line Iii-l0 of Fig. 6, looking in the direction of the arrows.
  • Fig. 11 is a fragmentary view taken along line HH of Fig. 9, looking in the direction of the arrows.
  • Fig. 12 is a plan view partly in section of another modification of the invention.
  • Fig. 13 is an isometric view of the modification shown in Fig. 12.
  • Figs. 1 and 2 I have shown the usual car sill construction at l-l, a draft gear pocket 3 having rear draft lugs or abutments 22 and front draft lugs lt, and a draft gear yoke 6 which may be of any conventional type.
  • the coupler shank l is preferably connected to the yoke by means of an intermediate member 9 which allows for horizontal as well as vertical angling of the car coupler.
  • the central or main cushioning unit 8 is preferably made up of a series of compression pads Ill, each consisting of a metal plate to which a cushion of rubber has been cured.
  • the surface of this rubber is corrugated, as I have found that a cushioning pad of that type combines very desirable compression qualities with a high degree of durability and sturdiness.
  • I have shown spacer plates l2, but the use of these is optional. They serve to stiffen the action of the rubber pads under high compressive loads and to relieve somewhat the stress in the bond between the rubber and the plate to which it is cured.
  • the construction and functioning of these pads is more fully set forth and claimed in the copending patent application of Donald Willison and Hubert L. Spence, Serial No. 138,614, filed January i l, 1950.
  • each cushioning follower i l box-like in general form with its open end facing toward the draft or bufi'ing lugs.
  • the follower comprises side walls it, top wall 18, bottom wall 26, and end wall 22. Side walls it are provided with extensions 24 which are normally in contact with lugs 22 and l l.
  • the end wall 22 of each cushioning follower has a face 23 adjacent the cushioning pads and extends the full width of the draft gear between the car sills, whereas side walls it are spaced inwardly of the outer edges of wall 22, thereby leaving a shoulder or flange 26 extending from top to bottom of each side of the follower.
  • Shoulders 28 are used in connection with means for temporarily shortening the draft gear for easy assembly thereof into the yoke and the draft gear pocket.
  • box-like cushioning follower M Within box-like cushioning follower M is a series of compensating rubber pads 28, similar in design to the main cushioning pad id but of smaller size and of lesser capacity. These pads bear at one side against the inner face 3% of end wall 22 of the cushioning follower and at the other side against a compensating follower 32, one at each end of the draft gear.
  • the compensating follower serves to close the open end of the follower Hi and is mounted so as to move relative to follower l4 longitudinally of the draft gear, thus compressing the compensating rubber pads 28.
  • one of the compensating followers 32 bears directly against the rear abutment wall 34 of the yoke, while the compensating follower at the opposite end of the draft gear bears directly against the forward wall or abutment of the yoke or against the rear of the coupler shank, depending upon the type of yoke to be used.
  • this follower bears against end surface 35 of a follower block 38 carried in the forward end of 'the yoke.
  • the yoke engaging face :39 of the compensating follower may be relieved over part of its area as at ii in order to lighten the casting, as its entire area may not be necessary for contact with the yoke or the coupler shank.
  • Fig. l which shows the type of draft gear pocket common to modern passenger car construction
  • the front and rear stop lugs, id and 22 respectively extend inwardly toward the center line of the car an amount sufficient to overlap by a substantial amount the compensating followers 32.
  • followers 52 are spaced from the stop lugs as at 42 to allow for expansion of the compensating pads 25 during actuation of the mechanism.
  • the coupler shank 44 in such an arrangement is pivoted directly to the yoke by vertical pivot pin 45 which allows for horizontal angling of the coupler.
  • the inner face 58 of end wall 50 of the cushioning follower 52 is cylindrically curved and is centered at the transverse center line of the draft gear.
  • a filler piece 56 having a cylindrical surface 58 complemented with surface 48 and in contact there with, and an outer flat surface 69 for engagement with said compensating rubber pads.
  • side walls 62 of the cushioning follower are recessed on their inner sides as at 6 to provide cylindrical abutment surfaces 68 which are concentric with surface 18.
  • Compensating follower 68 which is interposed between rubber pads 55 and yoke abutments IE3 and i2, is formed with lateral projections it which are received in recesses 64 and are provided with cylindrical surfaces 76 which are complementary to surfaces 66. Surfaces 76 are spaced from surfaces 66 as at 78 for the neutral position of the mechanism, but are adapted to engage therewith to limit compression of pads 54. As in the previous embodiment, the compensating followers are spaced from the draft lugs 22 and il as at 80 to allow for expansion of pads 54 during actuation of the mechanism.
  • carrier member 90 terminates at each end in a half round trunnion 92 which is mounted for limited rocking motion in a carrier support 96 which is secured to sill flange 96.
  • carrier supports 94 and sill flanges 96 are the draft gear carrier strips 98 which extend the length of the draft gear pocket and serve to support the draft gear independently of the yoke.
  • the central portion of carrier member 90 is provided with a concavely curved support surface "30 which engages a correspondingly curved surface
  • I provide openings I64 and I06 through the cushioning followers and the compensating followers, respectively, these openings being in alignment with one another when the compensating follower has compressed the compensating rubber pads an amount corresponding approximately with their assembled height when installed in the car.
  • Temporary assembly pins may be inserted through these openings to hold the compensating units assembled during the application of the draft gear to the yoke.
  • the above mentioned assembly means for the compensating unit and the clamping flanges 26 26, on each side of the cushioning unit allow the use of assembly clamps by means of which the draft gear is held to a predetermined length to assure its easy assembly into the yoke and its subsequent application into the draft gear pocket.
  • Any suitable clamp such as shown in dot-dash at I 08 in Fig. 2 may be used to maintain cushioning unit 8 compressed during the assembly process.
  • the compensating follower I I 0 is provided at its corners with lateral extensions II2 which straddle the draft lug engaging extensions I I4 of the cushioning followers H6.
  • the outer faces I I8 of extensions I I2 are cut back or offset from the plane of the yoke or shankengaging face I20 of the compensating follower so that in the neutral or released position of the draft gear these extensions stand away from the front and rear draft lugs by a small amount (preferably about inch), as shown at I22 in Fig. 12.
  • Extensions I I2 in addition to serving to engage the stop lugs of the draft gear pocket to limit expansion of the compensating cushioning pads also serve to guide as well as support compensating follower H0 with respect to cushioning follower II 6.
  • This construction is to be preferred where the front or rear draft lugs are of lesser lateral extent than those shown in Figs. 1 to 4.
  • the front stop lugs I24 are of insufficient lateral extent tooverlap the body portion I20 of the compensating follower.
  • Fig. 12 illustrates a typical freight car or caboose construction with the coupler shank keyed to the yoke and having its end surface I28 in engagement with surface I20 on the compensating follower.
  • each compensating unit in the various forms of the invention illustrated When compressed to its normal assembled length, each compensating unit in the various forms of the invention illustrated, is under a compressive load of about 7,500 pounds.
  • the main or central cushioning unit when compressed to its normal assembled length is under a load of about 25,000 pounds. This 25,000 pound load reacts partly directly against the front and rear draft lugs of the draft gear pocket and partly (to the extent of 7,500 pounds) against both ends of the yoke through the compensating units. It will thus be seen that the draft gear is held tight in the draft gear pocket and also inthe yoke, regardless of the ordinary length variations to which these parts are subject.
  • the yoke assumes a position where the compression on the front compensating unit balances that on the rear compensating unit and even a very slight pulling or bufling force on the yoke will cause it to move, one of the compensating units expanding while the other compresses.
  • Figs. 3 and 4 I have shown the draft gear partially compressed under a pulling load.
  • the rear abutment wall 34 of the yoke transmits this: pulling load tothe rear compensating follower 32 causing it to compress the compensating rubber pads 28.
  • the forward compensating unit expands until its follower 32 takes up the clearance at 42 (Fig. 1) and comes into contact with the front stop lugs 4-4, which precludes further expansion of this unit.
  • the pulling load increases and the rear cushioning unit compresses, its resistance correspondingly increases and when it equals the initial compression on the central cushioning unit 8-, the latter unit starts to compress in series with the compensating unit.
  • this compensating draft gear in buff or draft has a threestage cushioning action as follows:
  • Stage A.Compensating unit operates alone.
  • Stage B.-Compensating unit and central cushioning unit operate together.
  • Stage C.Central cushioning unit operates alone.
  • the pulling load on the draft gear is usually below 50,000 pounds at the head end of the train. This normal operation takes place within stages A and B, and on the diagram D represents the total range of these stages.
  • the draft gear will be compressed, either in buff or pull, beyond stage B and up into stage C.
  • draft gear which can be used in standard car construction and with any design of conventional draft gear yoke. It provides a soft cushion for the normal bufing and draft shocks incident to passenger train operation, eliminates the shockproducing efiects of initial compression and provides a high reserve of cushioning capacity for the occasional accidental hard impacts.
  • My draft gear also includes convenient means for assisting assembly into the draft yoke and the car.
  • a cushioning mechanism for assembly with a draft gear yoke and between the front and rear stop lugs of a draft gear pocket comprising a main cushioning unit and a pair of spaced follower for engagement with said front and rear lugs, each of said followers comprising side walls and an end wall, a compensating cushioning unit carried by each of said followers, each of said compensating units comprising resilient pads and a follower element for engaging the adjacent end of said yoke, said element and.
  • said side walls having openings for receiving a retaining pin to maintain said compensating unit assembled during assembly of said mechanism in said yoke, said end walls having flange means extending laterally of said side wall to allow attachment of assembly clamps for maintaining said main cushioning unit compressed to a predetermined length during assembly of said mechanism into said yoke and draft gear pocket.
  • a cushioning mechanism for assembly with a draft gear yoke and between the front and rear stop lugs of a draft gear pocket comprising a main cushioning unit and a pair of spaced followers for engagement with said front and rear lugs, each of said followers being of boxlike construction open at its lug engaging end, a compensating cushioning unit received within said follower and comprising a movable follower element for engagement with the adjacent end of said yoke, said element having lateral extensions embracing said follower and being guided thereby for engagement with said stop lugs upon movement of said element away from said first named follower.
  • a cushioning mechanism for assembly with a draft gear yoke and between the stop lugs of a draft gear pocket comprising a follower for engagement with the stop lugs of said pocket, said follower comprising spaced side walls having extensions for engaging said stop lugs, a movable follower element received between said spaced walls and having lateral abutments overlapping said walls for guiding and supporting said element relative to said follower, said element being adapted for engagement with an end of said yoke, and resilient means compressed between said first named follower and said element, said abutments being spaced from said lugs when said mechanism is in neutral position and being adapted to engage said stops upon expansion of said resilient means during actuation of said mechanism.
  • a cushioning mechanism for use in a draft gear yoke and between the stop lugs of a draft gear pocket comprisin a pair of followers for engagement with said lugs, a cushioning unit reacting between said followers, and a compensating cushioning unit at each end of said mechanism reacting against the yoke, each of said followers being of box-like construction for receiving one of said compensating units, said followers having extensions for engagement with said lugs, each of said compensating units comprising a follower element for contact with the adjacent abutment of the yoke and resilient means reactin between said follower element and said firstnamed follower, said element having a pair of vertically spaced lateral projections on each side thereof overlapping said extensions for guiding and supporting said element relative to said follower, said projections being spaced from said lugs when said mechanism is in neutral position and being adapted to engage said lugs upon movement of said follower element away from said firstnamed follower.
  • a cushioning mechanism for assembly with a draft gear yoke and between the stop lugs of a draft gear pocket comprising a pair of spaced followers for engagement with said lugs, a cushion unit between said followers and urging said followers tightly against said lugs, a pair of compensating cushion units at the ends of said mechanism, said compensating units being adapted for tight engagement with the adjacent abutments in said yoke, said compensating units being adapted for pivotal movement in a vertical direction relative to said followers to enable vertical angling of said yoke and compensating units relative to said followers.
  • a cushioning mechanism for assembly with a draft gear yoke and between the stop lugs of a draft gear pocket comprising a pair of spaced followers for engagement with said lugs, a cushion unit between said followers and urging said followers tightly against said lugs, a compensating cushioning unit at each end of said mechanism and being adapted for tight engagement with said yoke, said compensating unit being adapted for pivotal movement in a vertical direction about the transverse horizontal center line of said mechanism.
  • a draft gear comprising a pair of spaced followers, a cushioning unit between said followers, each of said followers comprising an end wall engagin said unit and having spaced longitudinally extending walls, and another cushioning unit extending between the spaced walls of each of said followers, said last named unit being adapted for pivotal movement relative to said follower.
  • a draft gear comprising spaced followers for engagement with the stop lugs of a draft gear pocket, resilient means reacting between said followers, each of said followers comprising a transverse abutment having its outer surface cylindrically curved about the transverse horizontal center line of said gear, a member having a cylindrical surface for engagement with said surface on said follower, said member being slidable cushioning unit in engagement with said follower and adapted for engagement with the yoke of a railway draft rigging, said follower and said compensating cushioning unit having arcuate engaging surfaces to enable pivotal movement of said compensating cushioning unit relative to said cushioning follower.
  • a cushioning mechanism comprising a pair of spaced followers for engagement with the stop lugs of a draft gear pocket, resilient means reacting between said followers, a filler piece in engagement with each of said followers, said filler pieces and said followers having arcuate engaging surfaces to enable pivotal movement of said filler pieces relative to said followers, and resilient means for reacting between said filler pieces and the yoke of a railway draft rigging.
  • a cushioning mechanism comprising a pair of spaced followers, resilient means between said followers for opposing movement of said followers toward one another, each of said followers comprising a transverse portion one side of which engages said resilient means, the other side of said portion being arcuately curved aboutv the transverse horizontal center line of said mechanism, filler means having an arcuate surface for slidable engagement with said arcuately curved side of said follower, a follower element, and resilient means interposed between said filler means and said follower element, said follower and said follower element having opposed arcuate surfaces concentric with said first named arcuate surfaces and adapted for engagement upon movement of said follower element toward said follower.
  • a cushioning mechanism comprising a pair of spaced followers for engagement with the stop lugs of a draft gear pocket, resilient means between said followers, compensating cushioning units at each end of said mechanism, each of said units comprising a follower element for engagement with an abutment of a draft gear yoke and resilient means for opposing movement of said element toward the adjacent one of said followers, each of said followers having arcuately curved abutment surfaces, said element having arcuately curved surfaces opposing said surfaces on said followers and being adapted to engage therewith upon movement of said element toward said follower.
  • a follower member for railway cushioning mechanism comprising a transverse abutment portion for engagement with the resilient means of said mechanism, side walls joined to said abutment portion, said walls being spaced .inwardly of the vertical edges of said abutment portion, top and bottom walls, and extensions on said side walls extending beyond the ends of said top and bottom walls and being of lesser height than said side walls, said extensions being adapted for engagement with the stop lugs of a railway draft rigging, said extensions serving to guide and support a follower element of said mechanism.
  • a follower member for railway cushioning mechanism comprising a transverse abutment portion for engagement with the resilient means of said mechanism, said abutment portion having its outer surfaces cylindrically curved about the transverse horizontal center line of the said mechanism, and side walls joined to said abutment portion, said walls having cylindrically curved surfaces adapted to engage similar curved opposing surfaces on an associated follower element, said curved surfaces on said walls being concentric with said outer surfaces on said abutment portion.
  • a yoke In a railway draft rigging, a yoke, stop lugs, a draft gear in said yoke, said gear comprising a pair of spaced followers for engagement with said lugs, a cushioning unit between said followers and urging said. followers tightly against said lugs, and a pair of compensating cushioning units at the ends of said mechanism, said compensating units being adapted for tight engagement with the adjacent abutments in said yoke, each of said compensating units comprising a series of resilient pads-and a fol-lower element having lateral extensions overlapping portions of the first named follower, said extensions being adapted for engagement with said stop lugs upon movement of said element away from the first named follower.
  • a cushioning mechanism for assembly with a draft gear yoke and between the front and rear stop lugs of a draft gear pocket comprising a main cushioning unit for insertion between said front and rear stop lugs, said main unit comprising a pair of follower members for engaging said lugs and a series of rubber pads between said followers, each of said follower members comprising a transverse abutment wall in engagement with an end of said pads and side walls extending from said abutment wall and positioned inwardly of the outer edges of the latter to form shoulders thereon, said shoulders being adapted to be engaged by clamping means for maintaining said cushioning unit compressed between said follower members during assembly of said mechanism in the draft gear pocket.
  • a cushioning mechanism for assembly with a draft gear yoke and between the front and rear stop lugs of a draft gear pocket comprising a pair of spaced followers having longitudinally extending portions for engagement with said front and rear lugs, a main cushioning unit compressed between said followers, each of said followers comprising a pair of side walls, a compensating cushioning unit carried by each of said followers, each of said compensating units comprising resilient means and a follower element for engaging the adjacent end of said yoke, said element having lateral extensions overlapping said portions of the associated one of said followers for supporting and guiding said element, said element and said side walls having openings therein for receiving retaining means to maintain said compensating unit assembled during assembly of said mechanism with-said yoke.
  • a draft gear comprising a pair of spaced followers having portions for engagement with the stop lugs of an associated draft gear pocket, resilient means compressed between said followers, a cushioning unit carried by each of said followers, said unit comprising resilient means and a follower element movable relative to the associated one of said followers for compressing said last-named resilient means, said portions and said element having openings for receiving retaining means to maintain said last-named resilient means compressed during assembly of said gear with a draft gear yoke, said followers being formed with shoulders for attachment of clamping means to maintain said first-named resilient means compressed during assembly of said gear with the draft gear yoke and between the stop lugs of the draft gear pocket.
  • a cushioning mechanism for assembly with a draft gear yoke and between the front and rear stop lugs of a draft gear pocket comprising a main cushioning unit having a pair of follower members for engaging said lugs and resilient means compressible between said members, said members having shoulders at the sides thereof for attachment of clamping means to maintain said unit compressed during assembly of said mechanism with said yoke, and a compensating cushioning unit carried by each of said members, said compensating unit comprising resilient means and a yoke engaging follower element movable relative to the associated one of said follower members.
  • a cushioning mechanism for assembly with a draft gear yoke and between, the front and rear stop lugs of a draft gear pocket comprising a main cushioning unit having a pair of follower members for engaging said lugs and resilient means compressible between said members, and a compensating cushioning unit carried by each of said members, said compensating unit comprising resilient means and a yoke engaging follower element movable relative to the associated one of said members, each of said members comprising a pair of side walls, said element and said side walls having oppositely facing surfaces for receiving temporary retaining means in engagement therewith to hold said compensating unit under compression during assembly of said mechanism with said yoke.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Gears, Cams (AREA)
  • Vibration Dampers (AREA)
  • Gear Transmission (AREA)
US150473A 1950-03-18 1950-03-18 Cushioning mechanism for railway vehicles Expired - Lifetime US2686602A (en)

Priority Applications (19)

Application Number Priority Date Filing Date Title
NL91965D NL91965C (ko) 1950-03-18
BE539640D BE539640A (ko) 1950-03-18
BE501956D BE501956A (ko) 1950-03-18
NL91366D NL91366C (ko) 1950-03-18
NL91365D NL91365C (ko) 1950-03-18
US150473A US2686602A (en) 1950-03-18 1950-03-18 Cushioning mechanism for railway vehicles
US182749A US2640602A (en) 1950-03-18 1950-03-18 Cushioning mechanism for railway vehicles
US182750A US2640603A (en) 1950-03-18 1950-09-01 Cushioning mechanism for railway vehicles
GB6262/51A GB703638A (en) 1950-03-18 1951-03-15 Improvements in or relating to a combined buffer and draw-gear cushioning mechanism
GB23807/53A GB722309A (en) 1950-03-18 1951-03-15 Improvements in or relating to combined buffer and draw gear cushioning mechanism
FR1046573D FR1046573A (fr) 1950-03-18 1951-03-16 Perfectionnements apportés aux dispositifs amortisseurs
CH312021D CH312021A (fr) 1950-03-18 1951-03-17 Dispositif amortisseur pour attelage à tampon de choc de véhicules sur rails.
DEN3643A DE941913C (de) 1950-03-18 1951-03-18 Zug- und Stossvorrichtung fuer Schienenfahrzeuge mit Mittelpufferkupplung
GB19534/55A GB778341A (en) 1950-03-18 1955-07-06 Improvements in or relating to shaft positioning mechanisms
DEN10893A DE1036983B (de) 1950-03-18 1955-07-06 Vorrichtung zur Winkelverstellung von Wellen
CH334178D CH334178A (de) 1950-03-18 1955-07-07 Welleneinstellmechanismus
FR1166418D FR1166418A (fr) 1950-03-18 1955-07-07 Mécanisme de réglage d'axe
US520811A US2898530A (en) 1950-03-18 1955-07-08 Shaft positioning mechanism
US566254A US2898520A (en) 1950-03-18 1956-02-17 Electric circuit assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US182749A US2640602A (en) 1950-03-18 1950-03-18 Cushioning mechanism for railway vehicles
US150473A US2686602A (en) 1950-03-18 1950-03-18 Cushioning mechanism for railway vehicles

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US2686602A true US2686602A (en) 1954-08-17

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US182749A Expired - Lifetime US2640602A (en) 1950-03-18 1950-03-18 Cushioning mechanism for railway vehicles
US150473A Expired - Lifetime US2686602A (en) 1950-03-18 1950-03-18 Cushioning mechanism for railway vehicles

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US182749A Expired - Lifetime US2640602A (en) 1950-03-18 1950-03-18 Cushioning mechanism for railway vehicles

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US (2) US2640602A (ko)
BE (1) BE501956A (ko)
CH (1) CH312021A (ko)
DE (1) DE941913C (ko)
FR (1) FR1046573A (ko)
GB (2) GB722309A (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506868A (en) * 1983-05-27 1985-03-26 Sumitomo Metal Industries, Ltd. Shock absorber for vehicular couplers
US5598937A (en) * 1996-02-14 1997-02-04 Keystone Industries, Inc. Slackless drawbar assembly

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US2724513A (en) * 1952-02-12 1955-11-22 Nat Malleable & Steel Castings Railway draft rigging
BE524248A (ko) * 1952-11-13
US2859883A (en) * 1955-08-05 1958-11-11 Buckeye Steel Castings Co Railway draft rigging
US6446820B1 (en) 2000-09-07 2002-09-10 Amsted Industries Incorporated Railcar draft gear assembly and system
CN101698414B (zh) * 2009-11-09 2011-06-01 青岛四方车辆研究所有限公司 用于轻轨的半永久车钩
USD897238S1 (en) * 2018-05-01 2020-09-29 Strato, Inc. Selective cushioning apparatus for a railway car

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US1372109A (en) * 1918-03-02 1921-03-22 William H Toburen Band-holder
US2486975A (en) * 1948-01-16 1949-11-01 Waugh Equipment Co Draft gear
US2527589A (en) * 1946-08-03 1950-10-31 Nat Malleable & Steel Castings Cushioning mechanism for railway vehicles

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US1227821A (en) * 1915-09-02 1917-05-29 William H Miner Friction-gearing having a compound release.
US2024868A (en) * 1931-05-25 1935-12-17 Pullman Standard Car Mfg Co Balanced draft gear
US2390496A (en) * 1943-12-29 1945-12-11 Entpr Railway Equipment Co Draft mechanism for railway cars

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US1372109A (en) * 1918-03-02 1921-03-22 William H Toburen Band-holder
US2527589A (en) * 1946-08-03 1950-10-31 Nat Malleable & Steel Castings Cushioning mechanism for railway vehicles
US2486975A (en) * 1948-01-16 1949-11-01 Waugh Equipment Co Draft gear

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506868A (en) * 1983-05-27 1985-03-26 Sumitomo Metal Industries, Ltd. Shock absorber for vehicular couplers
US5598937A (en) * 1996-02-14 1997-02-04 Keystone Industries, Inc. Slackless drawbar assembly

Also Published As

Publication number Publication date
GB703638A (en) 1954-02-10
BE501956A (ko)
US2640602A (en) 1953-06-02
FR1046573A (fr) 1953-12-08
GB722309A (en) 1955-01-19
DE941913C (de) 1956-04-19
CH312021A (fr) 1955-12-15

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