US2403585A - Draft gear - Google Patents

Draft gear Download PDF

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Publication number
US2403585A
US2403585A US495092A US49509243A US2403585A US 2403585 A US2403585 A US 2403585A US 495092 A US495092 A US 495092A US 49509243 A US49509243 A US 49509243A US 2403585 A US2403585 A US 2403585A
Authority
US
United States
Prior art keywords
casing
friction
wedge
shoes
drawbar
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
US495092A
Other languages
English (en)
Inventor
George E Dath
Roland J Olander
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.)
W H MINER Inc
Original Assignee
W H MINER Inc
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
Application filed by W H MINER Inc filed Critical W H MINER Inc
Priority to US495092A priority Critical patent/US2403585A/en
Priority to FR912758D priority patent/FR912758A/fr
Priority to BE460628D priority patent/BE460628A/xx
Application granted granted Critical
Publication of US2403585A publication Critical patent/US2403585A/en
Priority to DEM5695A priority patent/DE877775C/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G9/00—Draw-gear
    • B61G9/04—Draw-gear combined with buffing appliances
    • B61G9/10—Draw-gear combined with buffing appliances with separate mechanical friction shock-absorbers

Definitions

  • This invention relates to improvements in draft gears for railway cars.
  • One object of the invention is to provide a railway draft gear, comprising a friction shock absorbing mechanism, especially designed for absorbing shocks produced by a pulling or draft action applied to the coupler or drawbar of'a railway car.
  • a more specific object of the invention is to provide a draft rigging for railway cars comprising a drawbar and a friction shock absorbing mechanism, especially designed to cushion the pulling shocks transmitted by the drawbar, wherein the friction shock absorbing mechanism includes a friction casing, friction shoes slidable within the casing, a central wedge spreading member cooperating with the shoes, and spring resistance means within the casing opposing inward movement of the shoes, and wherein the friction shock absorbing mechanism is actuated in draft by the drawbar which extends through the casing and has shouldered engagement with the wedge to force the latter inwardly of the casing, thereby spreading the shoes apart and moving the same inwardly of the casing opposed by the spring resistance, thus providing high combined spring and frictional resistance to provide the desired cushioning action.
  • the friction shock absorbing mechanism includes a friction casing, friction shoes slidable within the casing, a central wedge spreading member cooperating with the shoes, and spring resistance means within the casing opposing inward movement of the shoes, and wherein the friction shock absorbing mechanism is
  • Figure 1 is a longitudinal sectional view, through the underframe structure of a railway car, at'one end thereof, illustrating our improvements in connection therewith.
  • Figure 2 is an end elevational view, on an enlarged scale, of the structure shown in Figure 1, looking from right to left in said figure, the underframe structure of the car being omitted.
  • Figure 3 is a vertical 7 Claims. (Cl. 21334) sectional view, corresponding substantially to the line 3--3 of Figure 2.
  • Figure 4 is a view, similar to Figure 2, illustrating the manner of assembling the parts of the friction shock absorbing unit.
  • Figure 5 is a view, similar to Figure 3, but taken on the line 5-5 of Figure 2, illustrating the manner of assembling the parts of the friction shock absorbing unit.
  • [0 indicates the usual end sill of the car underframe structure, and II one of the center sills.
  • the usual underframe structure comprises two spaced center sills and these are fixed at their front ends to the end sill.
  • the underframe structure has a transverse connecting member I2 which extends between the two sills from one to the other, and has its opposite ends fixed thereto.
  • the member l2 serves as the front stop of the draft rigging of the car and is reins forced by a heavy plate I 3 on the inner side thereof, which is preferably welded thereto.
  • the end sill l0 and the member l2 are of channel-shaped cross section and are connected by top and bot!
  • the drawbar of the car which is indicated by 5, is of the type having a coupling hook at the outer end thereof for engagement with the coupling means of an adjacent car.
  • the drawbar l5 has an enlarged head 16 at the outer end having the hook formed. thereon.
  • the shank ll of the drawbar 15, which extends rearwardly from the head, is of cylindrical cross section, that is, in the form of a cylindrical bar or shaft.
  • the usual nut I8 is threaded on the rear end of the shank I1.
  • the drawbar I5 is accommodated for lengthwise sliding movement in aligned openings [9 and 20 in the end sill l0 and connecting member l2-l3.
  • the head l6 of the drawbar is reduced in size-at the rear end thereof where it joins the cylindrical shank [1, thereby providing top and bottom shoulders 2 l-2l adapted to engage the front face of the end sill l0 and limit inward movement of the drawbar.
  • Our improvements comprise broadly a friction casing -A, a wedge block B, three friction shoes CC-C, and a spring resistance D.
  • the friction unit comprising the casing A, block B, shoes c-o c, and spring D, is disposed between the draft or center sills of the car in abutment with the front stop l2-l3.
  • the shank I! of the drawbar 15 extends through the unit and actuates the same in draft action, as hereinafter pointed out.
  • the friction casing A is in the form of a shell of hexagonal transverse cross section, open at one end, and closed at the other end by a transverse wall 22.
  • the closed end of the casing A bears on the front stop '
  • the open end of the casing is thus presented at the rear or inner end of the draft rigging.
  • the side walls of the casing. which are indicated by 23-23, are thickened at the open end of the casing, as indicated at 24, and present six fiat interior friction surfaces 2525 which converge inwardly of the casing, thereby providing a tapered friction shell portion 26 at the open end of the casing.
  • the wedge B is in the form of a block centrally recessed at the outer end, as indicated at 29, to
  • the wedge faces 30 are disposed symmetrically.
  • the block B is provided with a substantially flat transverse end face 32 which forms a spring seat.
  • the block B has a central opening 33 therethrough adapted to accommodate the shank I1 of the drawbar H5. 'The walls of the opening are notched at diametri cally' oppositesides of the opening, as indicated at 34, to cooperate with a spanner, or similar tool,- used in assembling the mechanism.
  • the friction shoes 0 which are three in numher, are of substantially V-shaped cross section, each shoe presenting a V-shaped wedge face 35 at the inner side thereof and a V -shaped friction surface 36 at the outer side.
  • the friction shoes CC'C are alternated with the lugs 21-21--21 of the casing and have the V-shapedfriction surfaces thereof slidably engaged with the corresponding friction surfaces of thecasing', the V- shaped surface of each shoe engaging two adjacent surfaces 2525 of the casing.
  • the V-shaped wedge faces 353535 of the shoes cooperate with the V-shaped wedge faces 303G-39 of the wedge block 13-.
  • the wedge faces 353535 of the shoes are formed on lateral inward enlargements 31 on the shoes, the enlargement 31'of each shoe presenting a flat face 38 at the inner end thereof forming a spring seat.
  • the springresistance lltvhi'ch is preferably under initial compression, is disposed within the casing A and comprises a relatively light inner coil 39 and a, heavier outer coil 4%
  • the opposite ends of the outer coil it bear respectively on the inner side of the end wall 22 of the casing and the spring seats 38 of the shoes C, and the opposite ends'of the inner "coil bear, respectively, :o'n-is'aid wall 22 and the fiat end face 32 of the wedge block B.
  • the shank 11 of the drawbar extends through the casing A of the mechanism, the wall 22 of the casing being provided with a central opening 4
  • the block B is also provided 4 and shouldered against the bottom of said seat.
  • the nut i8 is preferably secured against accldental removal by a cotter pin 42 extending through the end of the drawbar shank.
  • the parts are all placed within the casing A by being inserted throughthe open end thereof, the springs 39 and ddbeidgfirst placed in position "therein.
  • the shoes CC--C are then placed on the spring 40 and forced inwardly to a predetermined extent,
  • Compression of the 'mechanism is positively limited'by engagement ofthe lugs 3
  • the springs 39 and 40 restore all of the parts to normal position, outward movement of the wedge being limited by engagement of the 1118 3! thereof with the stop lugs 21 of the casing.
  • spring means opposing inward movement of said shoes; a block having wedging engagement with the shoes; spaced inner and outer stops on the casing; projecting stop lugs on said block engageable with said inner and outer stops for limiting inward and outward movement of said wedge block; and a drawbar extending through said casing, spring means, and block and having shouldered engagement with the latter to pull the same inwardly of the casing in draft.
  • a railway draft rigging for a railway car having a front stop
  • a friction casin open at one end and closed at the 1 l other, said casing having longitudinally disposed, inwardl converging, interior friction surfaces at said open end, said casing having the closed end there-of abutting said front stop; of a drawbar having an elongated shank extending said front stop and easing; friction shoes within the casing having friction surfaces of V-shaped, transverse cross section engaged with the V- shaped friction surfaces of the casing; a central wedge block mounted on said drawbar shank and having wedging engagement with the shoes, said shoes and block having interengaging wedge faces of V-shaped, transverse cross section; inner and outer stops on the interior of the casing; laterally projecting lugs on said wedge block engageable with said inner and outer stops for limiting inward and outward movement of said block; means on said drawbar shank having shouldered engagement with the wedge block for forcing the same inwardly of the casing when a draft force is applied
  • a railway draft rigging for a railway car having a front stop
  • a friction casing engageable with said front stop, said casing havinwardly converging, interior friction surfaces; a friction clutch actuated by said drawbar having sliding frictional engagement with the friction surfaces of the casing, said clutch including friction shoes and a central wedge block; interior stop shoulders on said casing with which said block has direct shouldered engagement to limit inward movement thereof; and spring means within the casing yieldingly opposing inward movement of said clutch.
  • a friction clutch actuated by said drawand having sliding frictional engagement with the friction surfaces of the casing, said clutch including friction shoes and a central wedge block; interior stop shoulders on the casing; outstanding lugs on said wedge block engageable with said stop shoulders for limiting inward movement of the wedge block; and spring means yieldingly opposing inward movement of said clutch.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)
  • Clamps And Clips (AREA)
US495092A 1943-07-17 1943-07-17 Draft gear Expired - Lifetime US2403585A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US495092A US2403585A (en) 1943-07-17 1943-07-17 Draft gear
FR912758D FR912758A (fr) 1943-07-17 1945-07-25 Dispositif d'attelage pour véhicule de chemin de fer
BE460628D BE460628A (en(2012)) 1943-07-17 1945-10-10
DEM5695A DE877775C (de) 1943-07-17 1950-08-23 Zughakenanordnung mit einem Quertraeger und einer Zugstange fuer Eisenbahnwagen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US495092A US2403585A (en) 1943-07-17 1943-07-17 Draft gear

Publications (1)

Publication Number Publication Date
US2403585A true US2403585A (en) 1946-07-09

Family

ID=23967241

Family Applications (1)

Application Number Title Priority Date Filing Date
US495092A Expired - Lifetime US2403585A (en) 1943-07-17 1943-07-17 Draft gear

Country Status (4)

Country Link
US (1) US2403585A (en(2012))
BE (1) BE460628A (en(2012))
DE (1) DE877775C (en(2012))
FR (1) FR912758A (en(2012))

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504253A (en) * 1946-09-11 1950-04-18 Miner Inc W H Railway draft rigging
US2638353A (en) * 1951-07-11 1953-05-12 Miner Inc W H Draft and buffer rigging for vehicles
US2664300A (en) * 1951-07-11 1953-12-29 Miner Inc W H Draft rigging for vehicles
CN114761303A (zh) * 2019-12-06 2022-07-15 亚历山大·亚历山大罗维奇·安德烈夫 减震单元

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5112074A (en) * 1989-11-03 1992-05-12 The United States Of America As Represented By The Secretary Of The Army Tow bar assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504253A (en) * 1946-09-11 1950-04-18 Miner Inc W H Railway draft rigging
US2638353A (en) * 1951-07-11 1953-05-12 Miner Inc W H Draft and buffer rigging for vehicles
US2664300A (en) * 1951-07-11 1953-12-29 Miner Inc W H Draft rigging for vehicles
CN114761303A (zh) * 2019-12-06 2022-07-15 亚历山大·亚历山大罗维奇·安德烈夫 减震单元

Also Published As

Publication number Publication date
DE877775C (de) 1953-05-26
BE460628A (en(2012)) 1945-11-30
FR912758A (fr) 1946-08-20

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