US2743682A - Car truck - Google Patents

Car truck Download PDF

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Publication number
US2743682A
US2743682A US187409A US18740950A US2743682A US 2743682 A US2743682 A US 2743682A US 187409 A US187409 A US 187409A US 18740950 A US18740950 A US 18740950A US 2743682 A US2743682 A US 2743682A
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United States
Prior art keywords
wall
bolster
frame
walls
inboard
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Expired - Lifetime
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US187409A
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Robert B Cottrell
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American Steel Foundries
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American Steel Foundries
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Priority to US187409A priority Critical patent/US2743682A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/50—Other details
    • B61F5/52—Bogie frames

Definitions

  • a primary object of the invention is to devise a novel truck comprising simplified side frames and bolster to obtain a light weight exceptionally strong construction which may be easily assembled and disassembled.
  • a further object of the invention is to provide novel side frames of a beam type wherein the various sections are formed and arranged to provide an enclosure for the bolster supporting springs and guides for the bolster and at the same time afford an exceptionally strong construction.
  • friction means are incorporated for controlling relative movements between the bolster and side frames at opposite sides of the truck and to damp spring oscillations.
  • Figure 1 is a fragmentary composite side elevational view of one form of the invention, the right half of the view being an inboard elevational view of the side frame and cross sectional view of the bolster, the left half being an outboard elevational view of the side frame and the bolster;
  • Figure 2 is a fragmentary top plan view of the truck with the bolster at the right half removed;
  • Figure 3 is a sectional view taken substantially on the line 3-3 of Figure 1, the bolster being shown in side elevation;
  • Figures 4 and 5 illustrate another embodiment of the invention, Figure 4 being the fragmentary side elevational view thereof, and Figure 5 being a fragmentary top plan view thereof;
  • Figures 6 and 7 illustrate a further embodiment of the invention and are comparable to Figures 4 and 5 respectively.
  • the truck comprises a side frame at each side in the form of a beam type member 2, said member having a depressed central portion, generally indicated 4, and upwardly diverging end portions, generally indicated 6, 6.
  • the side frame comprises a bottom transverse web 8, which extends substantially horizontal in the central portion of the frame and diagonally upwardly at the end portions of the frame, and merges at its ends into the inboard sides of journal boxes 10, Ill diagrammatically illustrated.
  • the wall 8 is joined at its lateral edges to the bottom edges of substantially vertical inboard and outboard walls 12 and 1d.
  • the side walls are joined at their upper edges at the end portions of the frame by upwardly sloping transverse webs 16, 16, which are convexed upwardly in the regions immediately adjacent to and above the journal boxes.
  • the top walls 16 are bifurcated as at 18 at the ends of the frame and terminate with the sidewalls 12 and 14 at the outboard sides of the journal boxes. It will be seen that the side walls 12 and 14 merge with the inboard sides of the journal boxes adjacent to their upper ends and with the top sides of said boxes. 10 are shown only in outline form inasmuch as they are of conventional design such as presently used in railway service.
  • the upper edges of the side walls 12 and 14 at the central zone of the side frame are connectedto a spring seat wall Zll, said wall 20 being slightly widened and extending a small distance inboardly and outboardly of the walls 12 and 14.
  • the inboard and outboard edges of the wall 20 merge into lower edges of substantially vertical inboard and outboard webs 22 and 24, said webs 22 and 24 extending lengthwise longitudinally of the side frame and curving at their ends into the adjacent portions of the inboard and outboard walls of the end portions 6, 6 of the frame.
  • the wall 20 comprises a lower or depressed portion 26 centrally thereof and a stepped-up end portion 28 at each end thereof.
  • the portion 26 is flanged upwardly as at 30 at each end and merges with the adjacent end of portion 28, and the outer end of each portion 28 is formed with an upwardly extending flange 32 which joins the inboard and outboard webs 22 and 24.
  • the upper ends of webs 22 and 24 are provided with outturned flanges 34 and 36, said flanges strengthening the construction and at their ends tapering into the inboard and outboard walls 12 and 14 of the end portions in the areas of the inner ends of walls 16, 16.
  • the webs 22 and 24 and their slight spacing inboardly and outboardly of the walls 12 and 14 and their merger at opposite ends with the inner ends of the end portions materially strengthen the central portion of the side frame and its juncture with the end portions of the frame.
  • the stepped arrangement of the spring seat wall also strengthens the central zone of the frame.
  • the central zone 4 of the frame is provided on its top side at opposite ends of the spring seat with upstanding extensions, generally indicated 40, 40.
  • Each extension 40 comprises an upright arcuate web 42, presenting a curved guide surface 44 facing toward the center of the frame.
  • the lower edge of each web 42 merges in the area between the planes of the walls 12 and 14 with the inner end of the adjacent wall 16.
  • the lateral end portions of the wall 42 are continued at their lower edges for a short distance on the top sides of the substantially horizontal flanges 34 and 36.
  • the lateral edges are flanged outwardly as at 46 and 48 and tapered downwardly.
  • each web 42 is formed at its crest integral with a vertical edge of a gusset 50, the lower edge of the gusset merging with the top side of the adja-' cent web 16.
  • Each gusset 50 is positioned substantially centrally between the inboard and outboard sides of the related end portion 6.
  • a group of coil springs 52, 52 is disposed within the pocket 33. As herein shown, two sets of springs 52, 52
  • portion 26 of web 20 are seated at their lower ends on portion 26 of web 20 and one set of springs 52 is seated on each portion 28.
  • All of the sets of springs 52, 52 are of substantially equal height and the central sets of springs seat against a bottom wall 54 of a bolster, generally indicated 56.
  • Each end set of springs 52 seats against a bottom web 58 of a transversely extending wing 60 on the adjacent side of the bolster.
  • the wall 53 of each wing 60 is offset upwardly with respect to the wall 54 and is flanged at its inner end as at 62, the flange 62 merging at its lower lateral edge with the bottom wall 54.
  • the outer edge of the wall 53 is connected to a top wall of the wing and bolster by a peripheral wall 64, said wall 64 in the area adjacent to the, guide surface 44 having an outer guide surface 66 concentric with the adjacent surface 44.
  • the wall 64 is cut out at the outboard end of the bolster as The journal boxes.

Description

May 1, 1956 R. B. COTTRELL CAR TRUCK 3 Sheets-Sheet 1 Filed Sept. 29, 1950 IN V EN TOR. Pafieaf ,5 65!!2'6/1 y 1, 1956 R. B. COTTRELL 2,743,682
CAR TRUCK Filed Sept. 29, 1950 5 Sheets-Sheet 2 Q? Q4956 l T f' 1 7/ IN VEN TOR.
May L 1956 R. B. COTTRELL CAR TRUCK 3 Sheets-Sheet 5 Filed Sept. 29, 1950 INVENTOR.
21 05612 ,5 C'oi/re/Z @Bllk United States Patent CAR TRUCK Robert B. Cottrell, Chicago, Ill., assignor to American Steel Foundries, Chicago, 111., a corporation of New Jersey Application September 29, 1959, Serial No. 187,409
2 Claims. (Cl. 105-497) This invention relates to railway car trucks.
A primary object of the invention is to devise a novel truck comprising simplified side frames and bolster to obtain a light weight exceptionally strong construction which may be easily assembled and disassembled.
A further object of the invention is to provide novel side frames of a beam type wherein the various sections are formed and arranged to provide an enclosure for the bolster supporting springs and guides for the bolster and at the same time afford an exceptionally strong construction.
In several embodiments of the invention, friction means are incorporated for controlling relative movements between the bolster and side frames at opposite sides of the truck and to damp spring oscillations.
These and other objects of the invention will become more apparent from the specification and the drawings, wherein:
Figure 1 is a fragmentary composite side elevational view of one form of the invention, the right half of the view being an inboard elevational view of the side frame and cross sectional view of the bolster, the left half being an outboard elevational view of the side frame and the bolster;
Figure 2 is a fragmentary top plan view of the truck with the bolster at the right half removed;
Figure 3 is a sectional view taken substantially on the line 3-3 of Figure 1, the bolster being shown in side elevation;
Figures 4 and 5 illustrate another embodiment of the invention, Figure 4 being the fragmentary side elevational view thereof, and Figure 5 being a fragmentary top plan view thereof; and
Figures 6 and 7 illustrate a further embodiment of the invention and are comparable to Figures 4 and 5 respectively.
Describing the invention in detaail and referring first to the embodiment shown in Figures 1 to 3, the truck comprises a side frame at each side in the form of a beam type member 2, said member having a depressed central portion, generally indicated 4, and upwardly diverging end portions, generally indicated 6, 6. The side frame comprises a bottom transverse web 8, which extends substantially horizontal in the central portion of the frame and diagonally upwardly at the end portions of the frame, and merges at its ends into the inboard sides of journal boxes 10, Ill diagrammatically illustrated. The wall 8 is joined at its lateral edges to the bottom edges of substantially vertical inboard and outboard walls 12 and 1d. The side walls are joined at their upper edges at the end portions of the frame by upwardly sloping transverse webs 16, 16, which are convexed upwardly in the regions immediately adjacent to and above the journal boxes. The top walls 16 are bifurcated as at 18 at the ends of the frame and terminate with the sidewalls 12 and 14 at the outboard sides of the journal boxes. It will be seen that the side walls 12 and 14 merge with the inboard sides of the journal boxes adjacent to their upper ends and with the top sides of said boxes. 10 are shown only in outline form inasmuch as they are of conventional design such as presently used in railway service.
The upper edges of the side walls 12 and 14 at the central zone of the side frame are connectedto a spring seat wall Zll, said wall 20 being slightly widened and extending a small distance inboardly and outboardly of the walls 12 and 14. The inboard and outboard edges of the wall 20 merge into lower edges of substantially vertical inboard and outboard webs 22 and 24, said webs 22 and 24 extending lengthwise longitudinally of the side frame and curving at their ends into the adjacent portions of the inboard and outboard walls of the end portions 6, 6 of the frame.
The wall 20 comprises a lower or depressed portion 26 centrally thereof and a stepped-up end portion 28 at each end thereof. The portion 26 is flanged upwardly as at 30 at each end and merges with the adjacent end of portion 28, and the outer end of each portion 28 is formed with an upwardly extending flange 32 which joins the inboard and outboard webs 22 and 24. The upper ends of webs 22 and 24 are provided with outturned flanges 34 and 36, said flanges strengthening the construction and at their ends tapering into the inboard and outboard walls 12 and 14 of the end portions in the areas of the inner ends of walls 16, 16. Thus it will be seen that the construction of the webs 22 and 24 and the wall 20 forms a convenient deep spring pocket 38. The webs 22 and 24 and their slight spacing inboardly and outboardly of the walls 12 and 14 and their merger at opposite ends with the inner ends of the end portions materially strengthen the central portion of the side frame and its juncture with the end portions of the frame. The stepped arrangement of the spring seat wall also strengthens the central zone of the frame.
The central zone 4 of the frame is provided on its top side at opposite ends of the spring seat with upstanding extensions, generally indicated 40, 40. Each extension 40 comprises an upright arcuate web 42, presenting a curved guide surface 44 facing toward the center of the frame. The lower edge of each web 42 merges in the area between the planes of the walls 12 and 14 with the inner end of the adjacent wall 16. The lateral end portions of the wall 42 are continued at their lower edges for a short distance on the top sides of the substantially horizontal flanges 34 and 36. The lateral edges are flanged outwardly as at 46 and 48 and tapered downwardly. The outer side of each web 42 is formed at its crest integral with a vertical edge of a gusset 50, the lower edge of the gusset merging with the top side of the adja-' cent web 16. Each gusset 50 is positioned substantially centrally between the inboard and outboard sides of the related end portion 6.
A group of coil springs 52, 52 is disposed within the pocket 33. As herein shown, two sets of springs 52, 52
are seated at their lower ends on portion 26 of web 20 and one set of springs 52 is seated on each portion 28.
All of the sets of springs 52, 52 are of substantially equal height and the central sets of springs seat against a bottom wall 54 of a bolster, generally indicated 56. Each end set of springs 52 seats against a bottom web 58 of a transversely extending wing 60 on the adjacent side of the bolster. The wall 53 of each wing 60 is offset upwardly with respect to the wall 54 and is flanged at its inner end as at 62, the flange 62 merging at its lower lateral edge with the bottom wall 54. The outer edge of the wall 53 is connected to a top wall of the wing and bolster by a peripheral wall 64, said wall 64 in the area adjacent to the, guide surface 44 having an outer guide surface 66 concentric with the adjacent surface 44. The wall 64 is cut out at the outboard end of the bolster as The journal boxes.
References Cited in the file of this patent UNITED STATES PATENTS Barber July 12,, 1910 Noble Oct. 16, 1923 6 Whitr idge Apr. 16, 1929 Kadel May 7, 1929 Busch Aug. 22, 1939 Busch Aug. 22, 1939 Eksergian Feb. 11, 1941 Martin Ian. 11, 1944 Webb Jan. 11, 1944 Cottrell Feb.6, 1945 Cottrell Apr. 16, 1946
US187409A 1950-09-29 1950-09-29 Car truck Expired - Lifetime US2743682A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996019A (en) * 1956-05-14 1961-08-15 Gen Motors Corp Railway vehicle truck

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US963978A (en) * 1910-02-21 1910-07-12 Standard Car Truck Co Car-truck.
US1470869A (en) * 1921-10-10 1923-10-16 Albert E Noble Car truck
US1708990A (en) * 1927-12-03 1929-04-16 Buckeye Steel Castings Co Car-truck construction
US1711568A (en) * 1927-08-16 1929-05-07 Byers W Kadel Car truck
US2170119A (en) * 1937-08-07 1939-08-22 Buffalo Brake Beam Co Car truck side frame
US2170123A (en) * 1937-03-15 1939-08-22 Buffalo Brake Beam Co Car truck side frame
US2231848A (en) * 1939-03-17 1941-02-11 Budd Edward G Mfg Co Railway truck
US2338952A (en) * 1942-10-10 1944-01-11 Birdsboro Steel Foundry & Mach Truck
US2338988A (en) * 1941-03-15 1944-01-11 Standard Car Truck Co Car truck
US2368641A (en) * 1942-07-30 1945-02-06 American Steel Foundries Car truck
US2398621A (en) * 1943-04-08 1946-04-16 American Steel Foundries Car truck

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US963978A (en) * 1910-02-21 1910-07-12 Standard Car Truck Co Car-truck.
US1470869A (en) * 1921-10-10 1923-10-16 Albert E Noble Car truck
US1711568A (en) * 1927-08-16 1929-05-07 Byers W Kadel Car truck
US1708990A (en) * 1927-12-03 1929-04-16 Buckeye Steel Castings Co Car-truck construction
US2170123A (en) * 1937-03-15 1939-08-22 Buffalo Brake Beam Co Car truck side frame
US2170119A (en) * 1937-08-07 1939-08-22 Buffalo Brake Beam Co Car truck side frame
US2231848A (en) * 1939-03-17 1941-02-11 Budd Edward G Mfg Co Railway truck
US2338988A (en) * 1941-03-15 1944-01-11 Standard Car Truck Co Car truck
US2368641A (en) * 1942-07-30 1945-02-06 American Steel Foundries Car truck
US2338952A (en) * 1942-10-10 1944-01-11 Birdsboro Steel Foundry & Mach Truck
US2398621A (en) * 1943-04-08 1946-04-16 American Steel Foundries Car truck

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996019A (en) * 1956-05-14 1961-08-15 Gen Motors Corp Railway vehicle truck

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