US3602063A - Railway car handbrake mechanism with square chain-winding drum - Google Patents
Railway car handbrake mechanism with square chain-winding drum Download PDFInfo
- Publication number
- US3602063A US3602063A US874639A US3602063DA US3602063A US 3602063 A US3602063 A US 3602063A US 874639 A US874639 A US 874639A US 3602063D A US3602063D A US 3602063DA US 3602063 A US3602063 A US 3602063A
- Authority
- US
- United States
- Prior art keywords
- chain
- drum
- links
- square
- square configuration
- 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
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 46
- 238000004804 winding Methods 0.000 title description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract description 6
- 229910001296 Malleable iron Inorganic materials 0.000 claims abstract description 5
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000005266 casting Methods 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 241000287433 Turdus Species 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H13/00—Actuating rail vehicle brakes
- B61H13/02—Hand or other personal actuation
- B61H13/04—Hand or other personal actuation by mechanisms incorporating toothed gearing
-
- 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
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
- Y10T74/20474—Rotatable rod, shaft, or post
- Y10T74/2048—Gear, drum, and cable
Definitions
- the drum has an outer square configuration for receiving flatwise alternate links of the chain and an inner square configuration, tangent to the outer square configuration, for receiving the intermediate chain links at right angles to the axis of rotation of the drum.
- the intermediate chain links are held in nonkinking relation to the alternate chain links by radially extending ribs located where the configurations are tangentially related at the ends of the sides of the inner square configuration which are concave and conform to the ends of the juxtaposed intermediate links.
- the square configurations provide pockets in a malleable iron casting for receiving the links of a 6-inch alloy steel chain which conforms to the specifications of the National Association of Chain Manufacturers.
- one end of the chain is connected to the brake rigging and the other end is connected directly to the handbrake mechanism housing or to a part of the car frame.
- the other end of the chain is connected through shock-absorbing anchor means to the car frame.
- the free end of the chain is anchored to the mechanism housing and is long enough to loop downwardly and then over a drum embodying this invention and downwardly on the other side for connection to the braking system.
- the drum of this invention is symmetrical and is either cast integrally with the main gear or is formed as a separate part and secured to the main gear.
- the drum has outer and inner square configurations provided pockets for receiving, respectively, alternate links and intermediate links of the brake applying chain which preferably is'a 86-inch alloy steel chain conforming to the specifications of the National Association of Chain manufacturers.
- the pockets are shaped to receive the alternate links flatwise and parallel to the axis of rotation of the drum and to receive the intermediate links flatwise and at right angles to this axis. This makes it possible to minimize the distance between the axis of rotation of the drum and the line along which the chain is tensioned for applying the brakes.
- the ends of the pockets for the intermediate links have arcuate abutments and radial sidewalls which prevent relative endwise movement of the intermediate links and maintain them in a plane at right angles to the axis of rotation of the drum. Regardless of the extent of tensioning or slackening of the chain, its links are held in nonkinking relation and thus the chain is always maintained in the same relative relation to the drum.
- a two-way handbrake mechanism such as that disclosed in U.S. Pat. No. Re. 25,001, is employed, the free end of the chain is anchored directly to the mechanism housing or to the car frame.
- FIG. 1 is a view, partly in front elevation and partly in section showing a two-way handbrake mechanism in which this invention is embodied.
- FIG. 2 is a vertical section view taken generally along line 22 of FIG. 1.
- FIG. 3 is a top plan view, at an enlarged scale, of the chain drum shown in FIGS. 1 and 2.
- FIG. 4 is a sectional view taken generally along the line 4-4 of FIG. 3 and shows the relation between the chain links and the sides of the square chain drum.
- FIG. 5 is a sectional view taken generally along line 5-5 of FIG. 4.
- FIG. 6 is a view, at an enlarged scale and somewhat diagrammatic in character, to illustrate the details of construction of the chain drum.
- FIG. 7 is a view, similar to FIG. 1, showing a quick release handbrake mechanism embodying this invention.
- the reference character 10 designates, generally, a handbrake mechanism that is intended for mounting on a railway car.
- the particular location on the car will depend upon the car construction.
- the mechanism 10 is of the two-way type shown in U.S. Pat. No. Re. 25,001 and includes a case, shown generally at 11, that is made up of a metallic cover 12 having an out turned flange 13 for overlying a back plate 14 to which it is secured.
- the mechanism 10 is mounted at a convenient location of the car body.
- the handbrake mechanism 10 is intended for manual application of the brakes of the railway car. It is used principally for holding the car in a given position on a siding or to control the speed of and the stop the car, at a given point during switching, etc.
- a chain indicated generally at 15, is employed.
- the chain 15 is r-inch alloy steel welded chain conforming to the specifications of the National Association of Chain Manufacturers.
- the chain 15 comprises alternate links 16 and intermediate links 17.
- One end 18, as indicated in FIG. l, is arranged to be connected to the brake rigging of the railway car while the other or free end 19 is connected by a pin 20 to a chain anchor 21 that is suitably secured to the case lll. This is feasible since the brakes are applied and released gradually by the hand brake mechanism 10.
- the chain 15 is trained over a square drum that is indicated, generally, at 22.
- the square drum 22 preferably is formed of malleable cast iron and it includes a radial flange 23 that is secured by rivets 24 to a main gear 25.
- the square drum 22 and integral flange 23 can be cast integrally with the main gear 25.
- Both the square drum 22 and the main gear 25 are rotatably mounted on a shaft 26, FIG. 2, that extends between the cover 12 and the back plate 14.
- the main gear 25 meshes with a pinion 27 that is freely rotatably mounted on a hand wheel shaft 28 which is journaled between the cover 12 and the back plate 14.
- a section 29 on the handwheel shaft 28 is arranged to nonrotatably receive a handwheel 30.
- the drive mechanism Interconnecting the pinion 27 and the handwheel shaft 28 is a drive mechanism that is indicated, generally, at 31.
- the drive mechanism can be constructed as disclosed in the aboveidentified U.S. Pat. No. Re. 25,0011. Alternatively it can be constructed as disclosed in the above identified U.S. Pat. 3,040,597.
- Ratchet teeth 32 are provided on the drive mechanism 31 for cooperation with a pawl 33 to hold the chain 15 under tension when the brakes are set.
- FIGS. 3-6 show, in more detail, the construction of the square drum 22 over which the alternate links 16 and intermediate links 17 of the chain 15 are trained.
- the square drum 22 comprises an outer square configuration 34 which may have a length at each side of 2.75 inches. Inside the outer square configuration 34 there is an inner square configuration 35 which has a length on each side of about 1.96 inches. These configurations are tangentially related at 36 or midway the length of each side of the outer square configuration 34.
- the alternate links 16 are arranged to lie flatwise along the sides of the outer square configuration 34 while the intermediate links 17 are positioned along the sides of the inner square configuration 35 and at right angles to the axis of rotation of the square drum 22 which is indicated at 22'.
- the intermediate links 17 are positioned between radially extending sidewalls 37 which are coextensive with the intermediate portions of the sides of the inner square configuration 35.
- a driving connection is provided between the chain 15 and the drum 22.
- the intermediate links 17 of the chain 15 are prevented from having any relative endwise movement with respect to the square drum 22 and also they are held in a plane that extends at right angles to the axis 22' of the square drum 22.
- the hand wheel 30 is rotated in a clockwise direction indicated by arrow 41, FIG. 1, to rotate the square drum 22 in the opposite direction.
- the alternate links 16 and the intermediate links 17 are moved together with the respective sides of the outer square configuration 34 and inner square configuration 35.
- the slack that is taken up by tensioning the chain 15 is accommodated by the looping downwardly of that portion of the chain 15 which is connected by the pin 18 to the chain anchor 19.
- One set of pockets is individual to the alternate links 16 and is formed, in part, by the sides of the outer configuration 34 with the radially extending ribs 38 located centrally of the alternate links 16.
- the other set of pockets is formed by the sides of the inner square configuration 35 with respect to which the intermediate links 17 are juxtaposed and located between the radially extending sidewalls 37 and prevented from endwise movement by the concave end portions 40 of the sides of the inner square configuration 35 or of the sides of the ribs 38.
- the handwheel 30 is rotated in the direction indicated by arrow 42 when the drive mechanism 31 is employed.
- the reference character designates, generally, a handbrake mechanism of the quick release type such as that disclosed in the above U.S. Pat. No. 3,040,597. It includes a case 11 and a cover 12 having an outstanding flange 14. There is provided a back plate 14'.
- the chain previously described and shown generally at 15, is made up of alternate links 16 and intermediate links 17. One end 18 is connected, as illustrated, to the brake rigging while the other end 19 is arranged to be anchored in a manner to be described.
- the chain is arranged to be wound over a square drum 22 in the manner described hereinbefore.
- the square drum 22 includes the flange 23 that is secured by rivets 24 to the main gear 25 which is rotatably mounted on the shaft 26.
- the handbrake mechanism 11 is provided with a first trip lever 45 that is arranged to be operated remotely.
- a second trip lever 46 is located adjacent the handwheel 30 and is provided to permit quick release of the brakes in the same manner that the first trip lever 45 accomplishes this purpose.
- shock-absorbing anchor means 47 is connected to the other end 19 of the chain 15.
- the shock-absorbing anchor means 47 includes an angle bracket, indicated generally at48, which has one flange 49 that is arranged to be bolted to the car frame, for example, to an end sill or to another frame part.
- the angle bracket 48 also includes an outstanding flange 50 that is apertured for receiving therethrough a pull rod 5 1.
- the pull rod 52 extends through a washer 52 and a nut 53 is threaded on this end underneath the washer 52.
- a coil compression spring 54 that is employed for absorbing the shock incident to quick release of the handbrake mechanism 10'.
- the last link 16 of the chain 15 is located between arms 55 of the bifurcated upper end 56 of the pull rod 51.
- a pin 57 extends through the arms 55 and the last link 16 to provide the required connection.
- the coil compression spring 54 has an outside diameter of 3 inches and, in the unstressed condition, it is 10 inches long. It is of such material that it compresses l-Vz inches when subjected to a load of the order of 4,000 to 5,000 pounds. It will be understood that other spring characteristics can be employed depending upon the stress to which the other end 19 of the chain 15 is subjected when the brakes are fully released and the slack in the chain 15 runs out.
- a railway car brake mechanism having a handwheel for rotating a gear wheel to apply the brakes comprising:
- a square drum rotatable with said gear wheel for receiving 1 alternate links of said chain flatwise on its sides and the intermediate links at right angles to the axis of rotation of said drum as said drum is rotated
- said square drum having an outer square configuration for receiving said alternate links and an inner tangentially related square configuration for receiving said intermediate links
- each side. of said square configuration having radially extending sidewalls to receive' therebetween said intermediate links
- the railway car brake mechanism according to claim 1 inner square configuration is about 1,96 inches.
- a railwaycar brake mechanism having a hand wheel for rotating a gear wheel to apply the brakes comprising:
- means for holding said intermediate links in nonkinking relation to said alternate links as'said drum is rotated to tension said chain including:
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US87463969A | 1969-11-06 | 1969-11-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3602063A true US3602063A (en) | 1971-08-31 |
Family
ID=25364227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US874639A Expired - Lifetime US3602063A (en) | 1969-11-06 | 1969-11-06 | Railway car handbrake mechanism with square chain-winding drum |
Country Status (1)
Country | Link |
---|---|
US (1) | US3602063A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4368648A (en) * | 1980-06-23 | 1983-01-18 | American Standard Inc. | Hand brake for railroad car |
US5127283A (en) * | 1991-01-30 | 1992-07-07 | Westinghouse Air Brake Company | Handbrake mechanism for railway cars |
CN101962026A (en) * | 2010-09-30 | 2011-02-02 | 齐齐哈尔轨道交通装备有限责任公司 | Chain winding shaft and hand brake |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US334999A (en) * | 1886-01-26 | Draft-gouplil | ||
US1037589A (en) * | 1911-01-05 | 1912-09-03 | George P Browning | Clevis. |
US1487531A (en) * | 1923-07-18 | 1924-03-18 | Nat Brake Company Inc | Car-brake-operating mechanism |
US2274175A (en) * | 1938-09-06 | 1942-02-24 | Manning Maxwell & Moore Inc | Electric hoist |
US2667331A (en) * | 1951-07-31 | 1954-01-26 | Columbus Mckinnon Chain Corp | Electric hoist |
US2781671A (en) * | 1948-04-23 | 1957-02-19 | Columbus Mckinnon Chain Corp | Chain hoist |
US3040597A (en) * | 1960-05-09 | 1962-06-26 | Pentron Electronics Corp | Hand brake mechanism |
US3376756A (en) * | 1964-04-13 | 1968-04-09 | Sanko Kiki Kabushiki Kaisha | Chain drive and housing arrangement |
-
1969
- 1969-11-06 US US874639A patent/US3602063A/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US334999A (en) * | 1886-01-26 | Draft-gouplil | ||
US1037589A (en) * | 1911-01-05 | 1912-09-03 | George P Browning | Clevis. |
US1487531A (en) * | 1923-07-18 | 1924-03-18 | Nat Brake Company Inc | Car-brake-operating mechanism |
US2274175A (en) * | 1938-09-06 | 1942-02-24 | Manning Maxwell & Moore Inc | Electric hoist |
US2781671A (en) * | 1948-04-23 | 1957-02-19 | Columbus Mckinnon Chain Corp | Chain hoist |
US2667331A (en) * | 1951-07-31 | 1954-01-26 | Columbus Mckinnon Chain Corp | Electric hoist |
US3040597A (en) * | 1960-05-09 | 1962-06-26 | Pentron Electronics Corp | Hand brake mechanism |
US3376756A (en) * | 1964-04-13 | 1968-04-09 | Sanko Kiki Kabushiki Kaisha | Chain drive and housing arrangement |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4368648A (en) * | 1980-06-23 | 1983-01-18 | American Standard Inc. | Hand brake for railroad car |
US5127283A (en) * | 1991-01-30 | 1992-07-07 | Westinghouse Air Brake Company | Handbrake mechanism for railway cars |
CN101962026A (en) * | 2010-09-30 | 2011-02-02 | 齐齐哈尔轨道交通装备有限责任公司 | Chain winding shaft and hand brake |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3668944A (en) | Sealed non-spin hand brake arrangement | |
US3602063A (en) | Railway car handbrake mechanism with square chain-winding drum | |
US3040597A (en) | Hand brake mechanism | |
US3679175A (en) | Energy absorbing tie-down winch | |
US1937769A (en) | Adjustable hold-down device | |
US5127283A (en) | Handbrake mechanism for railway cars | |
US3714842A (en) | Pivot mounting for trip bar of hand brake mechanism | |
US1459650A (en) | Hand brake for railway cars | |
GB1282202A (en) | Sealed non-spin hand brake operating arrangement | |
US3620098A (en) | High power hand brake and chain stop therefor | |
US2170238A (en) | Hand brake release control | |
US2166201A (en) | Nonspin wheel brake | |
US3933225A (en) | Shock absorbing means for railway hand brake mechanism | |
US3077790A (en) | Cable brake for trucks | |
US1614419A (en) | Car-brake-operating mechanism | |
US3529488A (en) | High power hand brake and release mechanism therefor | |
US1911056A (en) | Railway car hand brake | |
US2513275A (en) | Brake adjuster | |
US1971368A (en) | Brake adjuster | |
US1872063A (en) | Hand brake | |
US1545992A (en) | Hand-brake mechanism for railway cars | |
US2166256A (en) | Hand brake mechanism for railway cars | |
US1879973A (en) | Railway hand brake | |
US2054651A (en) | Hand brake mechanism | |
US1522249A (en) | Brake |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SAB NIFE INC.,RHODE ISLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AJAX CONSOLIDATED CO., AN IL CORP;REEL/FRAME:004267/0004 Effective date: 19840531 Owner name: SAB NIFE INC., GEORGE WASHINGTON HIGHWAY LINCOLN, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AJAX CONSOLIDATED CO., AN IL CORP;REEL/FRAME:004267/0004 Effective date: 19840531 |
|
AS | Assignment |
Owner name: SAB NIFE INC., A RI CORP.,RHODE ISLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AJAX CONSOLIDATED CO.,;REEL/FRAME:004314/0333 Effective date: 19840831 Owner name: SAB NIFE INC., GEORGE WASHINGTON HWY., LINCOLN, RI Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AJAX CONSOLIDATED CO.,;REEL/FRAME:004314/0333 Effective date: 19840831 |