US2880886A - Draft gears for railway draft rigging - Google Patents

Draft gears for railway draft rigging Download PDF

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Publication number
US2880886A
US2880886A US498907A US49890755A US2880886A US 2880886 A US2880886 A US 2880886A US 498907 A US498907 A US 498907A US 49890755 A US49890755 A US 49890755A US 2880886 A US2880886 A US 2880886A
Authority
US
United States
Prior art keywords
casing
plunger
draft
flanges
base
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
US498907A
Other languages
English (en)
Inventor
Harry W Mulcahy
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
Priority to BE546688D priority Critical patent/BE546688A/xx
Application filed by W H MINER Inc filed Critical W H MINER Inc
Priority to US498907A priority patent/US2880886A/en
Application granted granted Critical
Publication of US2880886A publication Critical patent/US2880886A/en
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
    • B61G9/06—Draw-gear combined with buffing appliances with rubber springs

Definitions

  • Another object of the invention is to provide a draft gear casing closed at one end and in which is disposed a resilient column and an operating plunger therefor, together with locking bars carried by the plunger and engaging flanges on the casing to secure the gear together as a unit.
  • Figure 1 is a cross sectional view through the horizontal median plane of the gear, with the rubber pads therein shown in full lines;
  • Figure 2 is a front end elevational view of the gear with locking bars omitted
  • Figure 3 is a view similar to Figure 2, with the locking bars in position;
  • Figure 4 is a plan view of the plunger
  • Figure 5 is an end elevational view of the locking bar
  • Figure 7 is a plan view of a locking bar
  • Figure 8 is a fragmentary cross sectional view taken substantially along the line 8--8 of Figure 3, looking in the direction of the arrows.
  • the gear of the present invention consists of a casing A, plunger B, a resilient column comprising a plurality of units C, integral aligning followers D; and a pair of locking bars E for securing the gear together as a unit.
  • the casing A which is of rectangular cross section, comprises top and bottom walls 10 and 11 respectively, and side walls 12 and 13 connecting the top and bottom walls together. These Walls are relatively thin.
  • a locking flange 15 Located at each of the four corners of the open end of the casing is a locking flange 15 that projects inwardly of the casing and extends substantially diagonally across the corner.
  • the plunger B consists of a rectangular base 20, having flangelike bosses 21 at its top and bottom sides, which bosses 21 merge with upwardly extending (to the left in Figure 4) smaller lugs 22. At the ends of the rectangular base portion are bosses 23 which correspond in height to bosses 21. It will be noted from Figure 2 that bosses 21 and 23 are of such outward dimension as to fit within the walls of the casing, and noted further that these bosses 21 and 23 are cut away at the corners of the base to clear the flanges 15 on the casing.
  • ice plunger also includes a forwardly extending portion 24 that projects outwardly of the casing when the plunger is in place therein.
  • Each of the resilient units consists of a rubber pad 30 bonded between the platelike portion 31 of a follower D and a second plate 32-.
  • Followers D contain top and bottom flanges 33, which extend forwardly from the plate portion 31 alongside the plate 32 and rubber pad 30 of the adjacent unit C.
  • Side flanges 34 are similarly disposed. Flanges 33 and 34 engage the walls 10, 11, 12, and 13 of the casing A. It will be noted that ;the flanges 33 and 34 do not extend to the corners of the followers D,
  • the locking bars E which are two in number, are -of generally C-shape configuration and comprise a central section 40 adapted-to lay over the endbosses 23"on' the plunger base 20, depressed corner sections 41 adapted to fit under the flanges 15 on the casing, and end sections 42 adapted to fit over the bosses 21 and abut against the smaller lugs 22 on the top and bottom of the plunger base 20.
  • the casing In assembling the gear, the casing is disposed open end up and the resilient column members C and followers D are inserted therein.
  • Front follower 35 is of such dimension that its flanges 36 form a press fit with the outer surfaces of bosses 21 and 23 on the plunger base 20.
  • Pressure is applied to the column to force the plunger inwardly of the casing and locking bars E are then inserted in place and secured to the plunger in convenient manner as by spot welding.
  • Pressure is then relieved from the plunger and the resilient column C expands until portions 41 of the locking bars engage flanges 15 on the casing, this engagement arresting outward movement of the plunger and securing the gear together as a unit.
  • the unit thus formed is adapted to fit in the yoke and pocket of a railway draft rigging, and in order to shorten the overall length of the unit so as to permit its insertion in the yoke and pocket, temporary blocks 45 may be inserted between the flanges 15 and locking bar portion 41 prior to release of pressure from the plunger.
  • These blocks which may conveniently be composed of wood or soft metal, will disintegrate and fall out during normal operation of the gear in service.
  • the rectangular base of the plunger includes flangelike portions projecting forwardly from the inner face of the base, which portions extend across the shorter sides of the base and part-way across the longer sides of the base and are interrupted at the corners of the base.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)
US498907A 1955-04-04 1955-04-04 Draft gears for railway draft rigging Expired - Lifetime US2880886A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE546688D BE546688A (enExample) 1955-04-04
US498907A US2880886A (en) 1955-04-04 1955-04-04 Draft gears for railway draft rigging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US498907A US2880886A (en) 1955-04-04 1955-04-04 Draft gears for railway draft rigging

Publications (1)

Publication Number Publication Date
US2880886A true US2880886A (en) 1959-04-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
US498907A Expired - Lifetime US2880886A (en) 1955-04-04 1955-04-04 Draft gears for railway draft rigging

Country Status (2)

Country Link
US (1) US2880886A (enExample)
BE (1) BE546688A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3075649A (en) * 1959-02-26 1963-01-29 Symington Wayne Corp Rubber draft gear

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2391618A (en) * 1943-10-22 1945-12-25 Miner Inc W H Friction shock absorber
US2486741A (en) * 1946-01-04 1949-11-01 Perma Realty Co Shock absorbing mechanism
US2598762A (en) * 1948-12-10 1952-06-03 Miner Inc W H Shock absorbing mechanism for railway draft riggings
US2713485A (en) * 1952-05-28 1955-07-19 Miner Inc W H Rubber cushioning units for shock absorbers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2391618A (en) * 1943-10-22 1945-12-25 Miner Inc W H Friction shock absorber
US2486741A (en) * 1946-01-04 1949-11-01 Perma Realty Co Shock absorbing mechanism
US2598762A (en) * 1948-12-10 1952-06-03 Miner Inc W H Shock absorbing mechanism for railway draft riggings
US2713485A (en) * 1952-05-28 1955-07-19 Miner Inc W H Rubber cushioning units for shock absorbers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3075649A (en) * 1959-02-26 1963-01-29 Symington Wayne Corp Rubber draft gear

Also Published As

Publication number Publication date
BE546688A (enExample)

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