US660649A - Equalizing-lever. - Google Patents

Equalizing-lever. Download PDF

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Publication number
US660649A
US660649A US72545599A US1899725455A US660649A US 660649 A US660649 A US 660649A US 72545599 A US72545599 A US 72545599A US 1899725455 A US1899725455 A US 1899725455A US 660649 A US660649 A US 660649A
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lever
brake
hand
levers
cylinder
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US72545599A
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Joseph E Normand
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    • 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

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  • WITNESSESJT' (/fi/ If f 5 No. 660,649. Patented Oct. 30, I900. J. E. NOBMANIJ.
  • This invention relates to a system of equalizing-levers for a combined power and hand brake mechanism of a railroad-car brake.
  • the system is especially adapted for use in connection with a d ouble-truck street-railroad car, but of course is not limited to such use.'
  • My invention consists in a system of equalizing-levers adapted for use with a powerbrake which may be readily added to the foundation-rigging of a hand-brake system, such as is commonly in use on a streetcar, and when so attached may be used independently of and without interfering with the hand-lever or connecting-rods, and, further, that the hand-brake system shall still be free to be used in place of the automatic when desired.
  • Figure 1 illustrates a portion of a car-framing and a system of equalizing-levers embodying my invention
  • Fig. 2 is a central longitudinal section through the brake-cylinder.
  • Reference character 1 designates the carframing, 2 the hand-brake lever, and 3 3 connecting-rods leading to the hand-brake staffs.
  • FIG. 4 designates an air-brake cylinder of any desired or well-known form.
  • This cylinder and its appurtenances are shown in detail section in Fig. 2.
  • the pump, governor, and valve system are not shown in detail herein, as not forming part of the invention; but the said cylinder may be provided with the usual operating-valve adapted to admit compressed air thereto from a source of supply and to discharge air therefrom as it is desired to set or release the brakes.
  • One end of an air-reservoir is shown in the drawings and is designated by the reference character 18.
  • a spring 14 is arranged within the cyl inder for returning the piston to its normal position.
  • 9 and 10 are two levers known as the cylinder-levers, the one fulcrumed to the end of the cylinder and the other, commonly known as a floating lever,-from the fact that its fulcrum is not a fixed point, pivoted to the link 6 at 17.
  • 11 is a connecting-link securing the two levers together intermediate of their length.
  • the opposite ends of the cylinder-levers 9 and 10 are pivoted to the connecting-rods 12, leading to the truck-levers in a manner well known.
  • the lever 7 is connected to the hand-brake lever 2, preferably by a flexible connection 13, such as a chain.
  • a flexible connection 13 such as a chain.
  • This flexible connection will permit the using of the automatic or air brake without interfering with the hand brakelever2orconnecting-rods3,&c.
  • slack is formed in the chain connection 13, which is taken up again when the brakes are released and the parts returned to their normal position.
  • one of the connecting-rods 3 is drawn forward by any suitable and well-known hand-operated mechanismsuch as the ordinary handbrake, staff, and chain connectionand the rod 5 is drawn out and the brakes set thereby, precisely as if motive fluid had been introduced into the cylinder 4:.
  • thehand mechanism and the power mechanism may be used entirely independent of the other.
  • the same system of levers is used in either case and operated from the same point-that is, at the point 17When the link 6 and rod 5 are both secured to the lever 10.
  • an additional lever is thrown innamely, 7--in order to give greater purchase.
  • a brake-operating mechanism the combination with a cylinder and piston mounted therein, two cylinder-levers, the one pivoted to a fixed point of support and the other constituting a floating lever, a link connecting the two levers together at points intermediate of their ends, and truck-leverconnecting-rods pivoted to the ends of said cylinder-levers, of a hand-brake lever centrally pivoted to a fixed point-of support, hand-brake connecting-rods connected to opposite ends of same, an intermediate lever pivoted at one end to a fixed point of su.pport,a flexible connection between the opposite end thereof and the hand-brake lever, a connection between the power end of said floating cylinder-lever and the intermediate lever at a point intermediate of its length, and a connection between said piston and the power end of said floating lever, whereby said lever may be operated by the movement of said piston, but is free to be operated by said hand-brake lever independently of said piston.

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  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Description

ND. 660,649. Patented flct. 30, I900. J. E. NORMAND.
EQUALIZING LEVER.
(Application filed July 29, 1699.)
(No Model.)
2 SheetsSheet l.
WITNESSESJT' (/fi/ If f 5 No. 660,649. Patented Oct. 30, I900. J. E. NOBMANIJ.
EQUALIZING LEVER.
(Application filed July 29, 1809.)
JOSEPH E. NORMAND, OF WATERTOWN, NEW YORK.
EQUALlZlNG-LEVER.
SPECIFICATION forming part of Letters Patent N 0. 660,649 d t d O tob 30, 1900.
Application filed July 29, 1899. :ierial No. 725,455. (No model.)
To all whom, it may concern:
Be it known that I, JOSEPH E. NORMAND, a citizen of the United States of America, and a resident of VVatertown, Jefferson county, New York, have invented certain new and useful Improvements in Equalizing-Levers, of which the following is a specification.
This invention relates to a system of equalizing-levers for a combined power and hand brake mechanism of a railroad-car brake. The system is especially adapted for use in connection with a d ouble-truck street-railroad car, but of course is not limited to such use.'
My invention consists in a system of equalizing-levers adapted for use with a powerbrake which may be readily added to the foundation-rigging of a hand-brake system, such as is commonly in use on a streetcar, and when so attached may be used independently of and without interfering with the hand-lever or connecting-rods, and, further, that the hand-brake system shall still be free to be used in place of the automatic when desired.
I will now proceed to describe an equalizing system embodying my invention and will then point out the novel features in a claim.
In the accompanying drawings, Figure 1 illustrates a portion of a car-framing and a system of equalizing-levers embodying my invention, and Fig. 2 is a central longitudinal section through the brake-cylinder.
Similar reference characters designate corresponding parts in both figures.
Reference character 1 designates the carframing, 2 the hand-brake lever, and 3 3 connecting-rods leading to the hand-brake staffs.
4 designates an air-brake cylinder of any desired or well-known form. This cylinder and its appurtenances are shown in detail section in Fig. 2. The pump, governor, and valve system are not shown in detail herein, as not forming part of the invention; but the said cylinder may be provided with the usual operating-valve adapted to admit compressed air thereto from a source of supply and to discharge air therefrom as it is desired to set or release the brakes. One end of an air-reservoir is shown in the drawings and is designated by the reference character 18.
15 designates a piston with which the cylinder is provided, having a hollow piston-rod 16. A spring 14 is arranged within the cyl inder for returning the piston to its normal position.
5 designates a rod arranged to slide loosely in the hollow piston-rod 16 and to bear at one end against the piston 15 within the cylinder, and at the other end it is secured at 17 to a link 6, in turn secured to an intermediate lever, (designated by the reference character7 The lever 7 is fulorumed at a fixed point 8 upon the frame of the car.
9 and 10 are two levers known as the cylinder-levers, the one fulcrumed to the end of the cylinder and the other, commonly known as a floating lever,-from the fact that its fulcrum is not a fixed point, pivoted to the link 6 at 17. 11 is a connecting-link securing the two levers together intermediate of their length. The opposite ends of the cylinder- levers 9 and 10 are pivoted to the connecting-rods 12, leading to the truck-levers in a manner well known.
The lever 7 is connected to the hand-brake lever 2, preferably by a flexible connection 13, such as a chain. This flexible connection will permit the using of the automatic or air brake without interfering with the hand brakelever2orconnecting-rods3,&c. When the automatic brake mechanism is used, slack is formed in the chain connection 13, which is taken up again when the brakes are released and the parts returned to their normal position.
When it is desired to use the hand-brakes, one of the connecting-rods 3 is drawn forward by any suitable and well-known hand-operated mechanismsuch as the ordinary handbrake, staff, and chain connectionand the rod 5 is drawn out and the brakes set thereby, precisely as if motive fluid had been introduced into the cylinder 4:. It will thus be seen that thehand mechanism and the power mechanism may be used entirely independent of the other. At the same time the same system of levers is used in either case and operated from the same point-that is, at the point 17When the link 6 and rod 5 are both secured to the lever 10. In the use of the hand brake mechanism, however, an additional lever is thrown innamely, 7--in order to give greater purchase.
By my arrangement of lovers I have shown an exceedingly simple and effective equalizing system and one which upon being added to a car originally equipped for hand-brake only in no Way interferes with the foundation brake-rigging. It simply means the addition of three levers.
What I claim is- In a brake-operating mechanism, the combination with a cylinder and piston mounted therein, two cylinder-levers, the one pivoted to a fixed point of support and the other constituting a floating lever, a link connecting the two levers together at points intermediate of their ends, and truck-leverconnecting-rods pivoted to the ends of said cylinder-levers, of a hand-brake lever centrally pivoted to a fixed point-of support, hand-brake connecting-rods connected to opposite ends of same, an intermediate lever pivoted at one end to a fixed point of su.pport,a flexible connection between the opposite end thereof and the hand-brake lever, a connection between the power end of said floating cylinder-lever and the intermediate lever at a point intermediate of its length, and a connection between said piston and the power end of said floating lever, whereby said lever may be operated by the movement of said piston, but is free to be operated by said hand-brake lever independently of said piston.
Signed by me at New York, N. Y., this 26th day of July, 1899.
JOSEPH E. NORMAND. Witnesses:
FRANK H. 'Oo'rHREN, ALBERT KNEWMAN.
US72545599A 1899-07-29 1899-07-29 Equalizing-lever. Expired - Lifetime US660649A (en)

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