US215592A - Improvement in vacuum-brakes - Google Patents
Improvement in vacuum-brakes Download PDFInfo
- Publication number
- US215592A US215592A US215592DA US215592A US 215592 A US215592 A US 215592A US 215592D A US215592D A US 215592DA US 215592 A US215592 A US 215592A
- Authority
- US
- United States
- Prior art keywords
- vacuum
- brakes
- car
- improvement
- brake
- 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
- 210000000188 Diaphragm Anatomy 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003467 diminishing Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 230000002452 interceptive Effects 0.000 description 2
- 230000003137 locomotive Effects 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/08—Brake cylinders other than ultimate actuators
- B60T17/083—Combination of service brake actuators with spring loaded brake actuators
Definitions
- My present invention relates to pressurebrakes employed for braking or diminishing the speed and stopping the momentum of railroad trains and locomotives, and is applicable to such braking apparatus whether steam, compressed air, or the natural pressure of the atmosphere as opposed to a vacuum is the power employed to apply or release the brakes.
- the cylinders or vacuum-chambers employed for operating the brakes have been attached or secured to and beneath the body of the car, and generally, if not invariably, located about the center of the car, so that the whole strain of the braking power comes upon the car-body at that point, and consequently the tendency is to hump the carbody, strain and loosen the bolts .and connections, and thereby seriously affect and shortenthe efliciency and durability of the car.
- My invention is designed to obviate this objection resulting from the use of the pressurebrake; and it consists, primarily, in securing the cylinders or vacuum-chambers directly to the frame-Work of the trucks, so that the body of the car is in no way affected by the strain of the brakes.
- Another important improvement resulting from my invention is the simplification of the mechanism for connecting the piston or mov- .ing member of the brake apparatus with the ordinary train-brake, whereby the poweris applied directly to said braking apparatus without in any way interfering. with the operation of the hand-brakes, and without requiring to alter the construction of said hand-brake mechanism, all as hereinafter more fully set forth.
- Figure l is Said vacuum-brake apparatus, so far as illustra ted' by the drawings, consists of the airpipe A and branch pipes A, leading into the vacuum-chambers B, which are provided with elastic diaphragms B, and the device operates by the inward movement of the elastic diaphragm consequent upon the formation of a vacuum within the pipes and chambers.
- 0 represents the wheels, and D D the framework, of an ordinary railway-car truck.
- E represents the brakes;
- F the brake-beams, and G the system of levers and connectingrods, chains, and windlasses which constitute the ordinary hand-brake mechanism in general use in this country, and known as the Hodge and Stevens brakes.
- G is that portion of said mechanism which is generally known as the dead-lever. All these parts are old and well-known devices, and I therefore lay no claim to their invention.
- the vacuum-chamber or pressure-cylinder and piston as the case may be, I secure to the frame of the truck, preferably to the central cross-beam, D, in any convenient and suitable manner, and at a point as near the center of the beam as practicable, and preferably on the side nearest the center of the car.
- chains, &c. which constitute the ordinary brake mechanism of a railroad-car, connected together by a rod, link, or chain, H, arranged substantially as and for the purpose set forth.
Description
f ZSheets-Sheet 1.
F. W. EAMES Vacuum-Brakes. I
No. 215,592. Paten 3y 20,1879.
2 Sheets--She&t 2.
o 7 8 O 2 y a M d fiwwm E n Mmm AB mm Wu 0 a TV NJETERS. FHOTO-LTHDGRAPHER WASHINGTON 0 C UNITED STATES PATENT 'QFFIOE.
. FREDERICK W. EAMES, OF WATERTOWN, NEW YORK.
IMPROVEMENT IN VACUUM-BRAKES.
Specification forming part of Letters Patent No. 215,592, dated May 20, 1879; application filed February 25, 1879.
To all whom it may concern:
Be it known that I, FREDERICK W. EAMES, of Watertown, in the county of Jefferson and State of New York, have invented certain new and useful Improvements in Vacuum- Brakes; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.
My present invention relates to pressurebrakes employed for braking or diminishing the speed and stopping the momentum of railroad trains and locomotives, and is applicable to such braking apparatus whether steam, compressed air, or the natural pressure of the atmosphere as opposed to a vacuum is the power employed to apply or release the brakes.
Heretofore the cylinders or vacuum-chambers employed for operating the brakes have been attached or secured to and beneath the body of the car, and generally, if not invariably, located about the center of the car, so that the whole strain of the braking power comes upon the car-body at that point, and consequently the tendency is to hump the carbody, strain and loosen the bolts .and connections, and thereby seriously affect and shortenthe efliciency and durability of the car.
My invention is designed to obviate this objection resulting from the use of the pressurebrake; and it consists, primarily, in securing the cylinders or vacuum-chambers directly to the frame-Work of the trucks, so that the body of the car is in no way affected by the strain of the brakes.
Another important improvement resulting from my invention is the simplification of the mechanism for connecting the piston or mov- .ing member of the brake apparatus with the ordinary train-brake, whereby the poweris applied directly to said braking apparatus without in any way interfering. with the operation of the hand-brakes, and without requiring to alter the construction of said hand-brake mechanism, all as hereinafter more fully set forth.
In the accompanying drawings, Figure l is Said vacuum-brake apparatus, so far as illustra ted' by the drawings, consists of the airpipe A and branch pipes A, leading into the vacuum-chambers B, which are provided with elastic diaphragms B, and the device operates by the inward movement of the elastic diaphragm consequent upon the formation of a vacuum within the pipes and chambers.
My present improvements, however, are not confined to the use of this particular apparatus, as cylinders and pistons might be substituted for the chambers B; and such devices might be operated by compressed air, steam, or other elastic fluid under pressure or by hydraulic power, as found most convenient and desirable.
0 represents the wheels, and D D the framework, of an ordinary railway-car truck. E represents the brakes; F, the brake-beams, and G the system of levers and connectingrods, chains, and windlasses which constitute the ordinary hand-brake mechanism in general use in this country, and known as the Hodge and Stevens brakes. G is that portion of said mechanism which is generally known as the dead-lever. All these parts are old and well-known devices, and I therefore lay no claim to their invention.
The vacuum-chamber or pressure-cylinder and piston, as the case may be, I secure to the frame of the truck, preferably to the central cross-beam, D, in any convenient and suitable manner, and at a point as near the center of the beam as practicable, and preferably on the side nearest the center of the car. This brings the piston-rod or moving member of the pressure brake apparatus directly opposite the lever G, so that the two can be readily connected by means of a link or chain, H.
From the foregoing it will be evident to those skilled in the art that two important re sults are accomplished by the location of the pressure apparatus in the position shown and described, viz: all strain of the braking mechanism is removed from the body of the car, and
' the power is applied directly to the hand-brake pose specified.
2. The combination of a cylinder, vacuumchamber, or diaphragm, located substantially v as described, with the system of levers, rods,
chains, &c., which constitute the ordinary brake mechanism of a railroad-car, connected together by a rod, link, or chain, H, arranged substantially as and for the purpose set forth.
In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.
FRED. W. EAMES.
Witnesses:
DE WITT J. CUMINGS, OHAs. D. BINGHAM.
Publications (1)
Publication Number | Publication Date |
---|---|
US215592A true US215592A (en) | 1879-05-20 |
Family
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Family Applications (1)
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US215592D Expired - Lifetime US215592A (en) | Improvement in vacuum-brakes |
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US (1) | US215592A (en) |
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- US US215592D patent/US215592A/en not_active Expired - Lifetime
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