US996284A - Automatic slack-adjuster. - Google Patents

Automatic slack-adjuster. Download PDF

Info

Publication number
US996284A
US996284A US57939210A US1910579392A US996284A US 996284 A US996284 A US 996284A US 57939210 A US57939210 A US 57939210A US 1910579392 A US1910579392 A US 1910579392A US 996284 A US996284 A US 996284A
Authority
US
United States
Prior art keywords
traveler
push rod
adjuster
brake
piston
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
US57939210A
Inventor
Charles Schenck
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.)
TRANSPORTATION APPLIANCE Corp
TRANSP APPLIANCE CORP
Original Assignee
TRANSP APPLIANCE CORP
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
Application filed by TRANSP APPLIANCE CORP filed Critical TRANSP APPLIANCE CORP
Priority to US57939210A priority Critical patent/US996284A/en
Application granted granted Critical
Publication of US996284A publication Critical patent/US996284A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B61H15/00—Wear-compensating mechanisms, e.g. slack adjusters
    • B61H15/0007—Wear-compensating mechanisms, e.g. slack adjusters mechanical and self-acting in one direction
    • B61H15/0014—Wear-compensating mechanisms, e.g. slack adjusters mechanical and self-acting in one direction by means of linear adjustment
    • B61H15/0021—Wear-compensating mechanisms, e.g. slack adjusters mechanical and self-acting in one direction by means of linear adjustment with cams, by friction or clamping

Definitions

  • This invention relates to improvements in automatic slack adjusters which are used in air brake mechanism in cars, trains, etc.
  • the object of this invention is to provide a simple, economical, durable and efficient device in which the piston travel in the air brake cylinder may be at all times automatically controlled and adjusted in such manner as to provide a means of positively taking up slack in the airbrake rigging due to the ordinary wear and tear of same and particularly wear upon brake shoes, and other travel of brake rigging due to wear upon pins in links of same.
  • the utility of this device is providing a means for automatically adjusting the slack by means of the over travel of the piston in the air cylinder as hereinafter described.
  • Figure 1 is a side-elevation, partly in section, showing the construction of the brake cylinder with slack ad juster attached thereto;
  • Fig. 2 a detail showing serrated edgeson piston;
  • Fig.3 a detail end view looking in upon rigging mechanism applied to brake cylinder.
  • a brake rigging having rocker arms 5 and. 6, connecting rod 7 and outer brake levers 8 and 9 respectively.
  • the brake cylinder 4 as shown, com prises a main body 10 with opposite end castings 11 and 12 respectively.
  • Part of the main body of the cylinder 10 is cut away to show its interior which is preferably made in accordance with standard practice and construction, having a piston spring 13 and piston rod 14 in which a push rod 15 travels.
  • Attached to or formed'with the end casting 12 is an extended frame 16, carrying an engaging traveler 17 provided with opposite projecting shoulders 18 and 19.
  • the base of the traveler 17 is recessed, as shown, at 20 on opposite sides for its entire length for Specification of Letters Patent. Application filed August 25, 1910. Serial No. 579,392.
  • the ju-nderface of the traveler is provided with serrated edges 22 which a ,dog 23 may engage during the-forward movement of the traveler 17.
  • the dog is held in closed position as indicated by a leaf spring 24 which is secured to the under face of the frame 16.
  • Pivotally secured to the rocker, arm 6at its lower end 25 is the push rod 15, the uppreferably, with serrated edges allow engagement by; a set of double opposed spring actuated jaws 28.
  • the teeth of the jaws come into positive engagement with the said recesses in the upper and lower faces of the push rod and are retained in position therewith by means of a coiled spring 29.
  • the double acting jaws with the spring retainer are forinedlntegrally with or attached to an annular collar 30 mounted on the end of the piston rod 14 adjacent the end casting 12.
  • the space or allowance for lateral move -ment between the shoulders 18 and 19 may be made to suit operating conditions as the equivalent of the normfilspiston travel in the standard brake cylinder, for instancepfour or six' inches as the ie'ase may be.
  • air supp-ljrEpipe 31 under pressure from'the car reservoir, or otherwise,
  • the shoulder 18 In normal position, as in the case of the first setting'of the air brake shoes and rigging theshoulder 18 is set with reference to the push rod 15 so that they come into engagement at the end of the stroke of the piston. Due to an uneven wear on the brake shoes, or because of lost motion in journals, brasses, center plates and variations in total leverages the push rod 15 has a 'tendency for increased travel which causes the shoulder 18 on the traveler 17 to be moved outwardly and as this traveler moves forward the dog 28 comes into engagement with the toothed-or serrated edge 22 on the 'under face of the traveler which prevents its return toward the brake cylinder proper. As the piston returns on its back stroke the pin 25 comes into engagement against the shoulder 19 which causes a lengthening of within the lower flanged base 21 of the pro and the piston is actuated in the cylinder in per and lower faces of which are provided,
  • an automatic slack adjuster comprising a movable traveler, a push rod provlded with upper and lower serrated edges, the outer end of the push rod being secured to a rocker arm, gripping jaws for engaging the push rod, means for retaining the traveler-in de sired position with respect to the push rod and means for automatically permitting oi the lengthening of the ush rod to compensate for the increased liength of the piston travel to take u slack in the brake mechanism, substantia ly as described.
  • a 2 In combination with a brake cylinder,
  • an automatic slack adjuster comprising a movable traveler provided with oppositely formed shoulders, airame provided with a recessed base for engagement with the o positely formedshoulders of the movab e traveler, the under side of the traveler being provided with serrated edges, a dog positioned adjacent the serrated edges for engagement therewith, a push rod secured at traveler for automatically permitting of the lengthening of the push rod to compensate for the increased-length of piston travel to take up slack in the brake mechanism, substantially as described.

Description

G. SGHENGK. AUTOMATIC SLAGKI ADJUSTER.
APPLICATION FILED AUG. 29, 1910.
Patented June 27, 191 1.
lj/yoaea UNITED. STATES mm: OFFICE.
CHARLES SCHENCK, CHICAGO, ILLINOIS, ASSIGNOR TO TRANSPORTATION APPLI- ANCE CORPORATION, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.
' AUTOMATIC SLACK-ADJUSTER.\
justers, of which the'following is a speci fication.
This invention relates to improvements in automatic slack adjusters which are used in air brake mechanism in cars, trains, etc.
The object of this invention is to provide a simple, economical, durable and efficient device in which the piston travel in the air brake cylinder may be at all times automatically controlled and adjusted in such manner as to provide a means of positively taking up slack in the airbrake rigging due to the ordinary wear and tear of same and particularly wear upon brake shoes, and other travel of brake rigging due to wear upon pins in links of same.
The utility of this device is providing a means for automatically adjusting the slack by means of the over travel of the piston in the air cylinder as hereinafter described.
The invention consists in features of construction and combination of parts hereinafter described and claimed.
In the drawings Figure 1 is a side-elevation, partly in section, showing the construction of the brake cylinder with slack ad juster attached thereto; Fig. 2 a detail showing serrated edgeson piston; and Fig.3 a detail end view looking in upon rigging mechanism applied to brake cylinder. Referring to Fig. 1, attached to the standard brake cylinder 4 is shown a brake rigging having rocker arms 5 and. 6, connecting rod 7 and outer brake levers 8 and 9 respectively. The brake cylinder 4, as shown, com prises a main body 10 with opposite end castings 11 and 12 respectively. Part of the main body of the cylinder 10 is cut away to show its interior which is preferably made in accordance with standard practice and construction, having a piston spring 13 and piston rod 14 in which a push rod 15 travels. Attached to or formed'with the end casting 12 is an extended frame 16, carrying an engaging traveler 17 provided with opposite projecting shoulders 18 and 19. The base of the traveler 17 is recessed, as shown, at 20 on opposite sides for its entire length for Specification of Letters Patent. Application filed August 25, 1910. Serial No. 579,392.
Patented J une27, 1911;
the purpose of movably securing the traveler j-ecting frame 16, as shown in Fig. 3. The ju-nderface of the traveler is provided with serrated edges 22 which a ,dog 23 may engage during the-forward movement of the traveler 17. The dog is held in closed position as indicated by a leaf spring 24 which is secured to the under face of the frame 16.
Pivotally secured to the rocker, arm 6at its lower end 25 is the push rod 15, the uppreferably, with serrated edges allow engagement by; a set of double opposed spring actuated jaws 28. The teeth of the jaws come into positive engagement with the said recesses in the upper and lower faces of the push rod and are retained in position therewith by means of a coiled spring 29. The double acting jaws with the spring retainer are forinedlntegrally with or attached to an annular collar 30 mounted on the end of the piston rod 14 adjacent the end casting 12.
The space or allowance for lateral move -ment between the shoulders 18 and 19 may be made to suit operating conditions as the equivalent of the normfilspiston travel in the standard brake cylinder, for instancepfour or six' inches as the ie'ase may be. In the 'operation of the cylinder air is admitted through an air supp-ljrEpipe 31 under pressure from'the car reservoir, or otherwise,
its forward movement by the air pressure therein. In normal position, as in the case of the first setting'of the air brake shoes and rigging theshoulder 18 is set with reference to the push rod 15 so that they come into engagement at the end of the stroke of the piston. Due to an uneven wear on the brake shoes, or because of lost motion in journals, brasses, center plates and variations in total leverages the push rod 15 has a 'tendency for increased travel which causes the shoulder 18 on the traveler 17 to be moved outwardly and as this traveler moves forward the dog 28 comes into engagement with the toothed-or serrated edge 22 on the 'under face of the traveler which prevents its return toward the brake cylinder proper. As the piston returns on its back stroke the pin 25 comes into engagement against the shoulder 19 which causes a lengthening of within the lower flanged base 21 of the pro and the piston is actuated in the cylinder in per and lower faces of which are provided,
27 which the push rod to compensate for the increased length of piston travel, so that the slack in the brake'rigging is automatically adjusted. It is obvious that'the construction of the device, or parts thereof, may be somewhat altered or modified if desired without departing from the spirit of the invention.
a Without specifically limiting myself to the aforesaid construction I claim:
1. In combination with a brake cylinder, an automatic slack adjuster comprising a movable traveler, a push rod provlded with upper and lower serrated edges, the outer end of the push rod being secured to a rocker arm, gripping jaws for engaging the push rod, means for retaining the traveler-in de sired position with respect to the push rod and means for automatically permitting oi the lengthening of the ush rod to compensate for the increased liength of the piston travel to take u slack in the brake mechanism, substantia ly as described.
A 2. In combination with a brake cylinder,
an automatic slack adjuster comprising a movable traveler provided with oppositely formed shoulders, airame provided with a recessed base for engagement with the o positely formedshoulders of the movab e traveler, the under side of the traveler being provided with serrated edges, a dog positioned adjacent the serrated edges for engagement therewith, a push rod secured at traveler for automatically permitting of the lengthening of the push rod to compensate for the increased-length of piston travel to take up slack in the brake mechanism, substantially as described.
' CHARLES SCHENGK. Witnesses:
WALKER BANNING, MARY R. Fnos'r.
US57939210A 1910-08-29 1910-08-29 Automatic slack-adjuster. Expired - Lifetime US996284A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US57939210A US996284A (en) 1910-08-29 1910-08-29 Automatic slack-adjuster.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US57939210A US996284A (en) 1910-08-29 1910-08-29 Automatic slack-adjuster.

Publications (1)

Publication Number Publication Date
US996284A true US996284A (en) 1911-06-27

Family

ID=3064615

Family Applications (1)

Application Number Title Priority Date Filing Date
US57939210A Expired - Lifetime US996284A (en) 1910-08-29 1910-08-29 Automatic slack-adjuster.

Country Status (1)

Country Link
US (1) US996284A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512507A (en) * 1948-05-17 1950-06-20 John A Schroeder Automatic slack adjuster for air brake piston travel
US2514588A (en) * 1946-04-29 1950-07-11 Karl F Nystrom Railway car brake and slack take-up system
US2599377A (en) * 1948-03-24 1952-06-03 Ivan A Farnworth Automatic travel adjuster for air brake pistons
US2626021A (en) * 1947-08-29 1953-01-20 Louis A Mcalpine Hydraulic link in brake mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514588A (en) * 1946-04-29 1950-07-11 Karl F Nystrom Railway car brake and slack take-up system
US2626021A (en) * 1947-08-29 1953-01-20 Louis A Mcalpine Hydraulic link in brake mechanism
US2599377A (en) * 1948-03-24 1952-06-03 Ivan A Farnworth Automatic travel adjuster for air brake pistons
US2512507A (en) * 1948-05-17 1950-06-20 John A Schroeder Automatic slack adjuster for air brake piston travel

Similar Documents

Publication Publication Date Title
US996284A (en) Automatic slack-adjuster.
US2326377A (en) Slack adjuster for railway brakes
UA126383C2 (en) Slack adjuster for a brake system with increased take-up capacity
US1192420A (en) Slack-adjuster for car-brakes.
US1227958A (en) Slack-adjuster.
US1801854A (en) Slack adjuster
US2169751A (en) Brake rigging
US720147A (en) Slack-adjuster.
US6230856B1 (en) Rod locking mechanism for compression slack adjuster
US1298574A (en) Slack-adjuster.
US1227945A (en) Slack-adjuster.
US1133667A (en) Load-regulated brake mechanism.
US595496A (en) Railway-brake
US1474092A (en) Slack adjuster
US1246672A (en) Railway-brake mechanism.
US1723527A (en) Slack adjuster
US1474090A (en) Slack adjuster
US1474093A (en) Slack adjuster
US1227957A (en) Slack-adjuster.
US1177212A (en) Slack-adjuster for railway-brakes.
US1227940A (en) Slack-adjuster.
US1227952A (en) Slack-adjuster.
US1578762A (en) Slack adjuster
US1125215A (en) Empty and load brake apparatus.
US1023790A (en) Slack-adjuster for brakes.