US729697A - Lever-arm for door checks and closers. - Google Patents

Lever-arm for door checks and closers. Download PDF

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Publication number
US729697A
US729697A US14857603A US1903148576A US729697A US 729697 A US729697 A US 729697A US 14857603 A US14857603 A US 14857603A US 1903148576 A US1903148576 A US 1903148576A US 729697 A US729697 A US 729697A
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United States
Prior art keywords
arm
lever
door
pawl
closers
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Expired - Lifetime
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US14857603A
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Warren H Taylor
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Yale and Towne Manufacturing Co
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Yale and Towne Manufacturing Co
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Priority to US14857603A priority Critical patent/US729697A/en
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/06—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes in which a torsion spring rotates a member around an axis perpendicular to the axis of the piston

Definitions

  • the piston normally or when the door to which the piston is attached is closed rests beyond or in front of the by-pass valve 10, and until this position of the piston is reached the liquid in front of the piston has a more or less restricted avenue of escape through the by-pass valve.- After the piston passes the by-pass the movement of the piston is retarded by the liquid confined in front of the piston and which can escape only by leakage around the piston.
  • the shaft 4' passes up through Chamber 2 and is provided with a crescent-shaped upper end to fit within a correspondingly shaped opening in the inner end of the lever-arm 14.
  • the ratchetsleeve 13 Located within the spring-chamber 2 and loosely surrounding shaft 4 is the ratchetsleeve 13. This sleeve is either directly or indirectly connected to the inner end of the spring 5 and connects the latter to the shaft,
  • the lever-arm 14 is secured on the upper end of shaft 4, and the free end of the jointed section thereof is secured to the door-frame in the usual manner.
  • the lever-arm is provided at its inner end with an elongated slot 15 for the reception of the rectangular plate or pawl 16, which lat- ;ter engages the teeth 17 of the ratchet-sleeve 13 and locks the sleeve and its connected spring and the lever-arm together.
  • Thepawl 16 is of greater width than the thickness of the lever-arm through which it passes, and the slot in said arm is of such size 'asytopermit free vertical movement of the pawl without anylateral movement.
  • the pawl is provided on one side, and preferably near-its T (tZZ whom it may concern:
  • My invention relates to an improvement in lever-arms for door checks and closers, and while it is designed particularly for use in con nection with liquid door checks and closers it may be used with any construction wherein a pawl-and-ratchet connection is employed between the lever-arm and spring.
  • the object of the invention is to provide a reversible lever-arm with a vertically-sliding pawl constructed to fall by gravity and always depend below the arm in a position to engage the teeth of the ratchet-wheel; and it consists in the details of construction and cornbination of parts, as will be more fullydescribed, and pointed out in the claims.
  • Figure l is a view in vertical section, showing a doorcheck with my improvement appliedthereto.
  • Fig. 2 is a view in longitudinal section of the, lever-arm and pawl.
  • Fig. 3 is a plan view of same.
  • Fig. 4 is a view in transverse section, and
  • Fig. 5 is a view in perspective of the pawl.
  • the shaft or spindle 4 and the spring 5 are located within the chamber 2, the shaft extending out through the top of said chamber and also through its bottom into horizontal chamber 1, the bearing for the shaft between the two Chambers being packed to prevent the passage of oil or .45 liquid up into the spring-chamber 2.
  • the crank 6 is secured to the lower end of shaft 4 and is connected by pitman 7 with the piston or other checking-surface 8, the latter preferably having one or more valved open- Center, with a vertical rib 18, which latter fits within a corresponding groove in the arm and absolutely prevents any tilting movement of h the pawl.
  • the rib 18 projects on opposite sides of the arm and is bent laterally at its ends, so as to overlap the arm and prevent the withdrawal or displacement of the pawl.
  • a lever-arm having an elongated slot, a vertically sliding pawl mounted in the slot, and means for preventing vertical displacement of the pawl.
  • a lever-arm having an elongated slot therein, and a vertically-sliding pawl of greater width than the thickness of the arm and provided on its edges with projections overlapping the arm for preventing displacement of the pawl.
  • a lever-arm having an elongated slot and a groove opening into said slot and a vertically-sliding pawl mounted in the slot and havinga rib resting in the groove.
  • a lever-arm having an elongated slot and a groove opening into said slot, and a vertically-sliding pawl mounted in the slot and having a rib resting in the groove, and also provided with projecting lips overlapping the wall of the slot for preventing the displacement of the pawl.

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  • Lock And Its Accessories (AREA)

Description

No. 729,697. PATENTED JUNE 2, i903.
w. H. TAYLOR.. r LEVER ARMVFOR DOOR CHECKS AND GLOS'ERS.
APPLIUA-I'ION FILED MAR. 13, 1903. 4
WITNESSES No. 729,697. Patented June 2, 1903.
UN TED? STATES PATENT FFICE.
WARREN I-I. TAYLOR, or STAMFORD, CONNECTICUT, AssicNoR 'ro THE YALE & TOWNE MANUFACTURING COMPANY, or sTAMronnCoN- NEOTICUT. .1 i
LEVER-ARM FoRoooRjcHEC s AND CLOSERS.
SPECIFICATION forming part of Letters Patent No. 729,697,.dated June 2,1903. Application filedMai'oll 19,1903. Serial-No. 148,576. No model.)
'ings 9 therein, through which the liquid within chamber 1 may freely pass when the piston Sisnnoviug toward the shaft 4 and which closes when the piston is moving away from the shaft, as in the act of closing the door.
The piston normally or when the door to which the piston is attached is closed rests beyond or in front of the by-pass valve 10, and until this position of the piston is reached the liquid in front of the piston has a more or less restricted avenue of escape through the by-pass valve.- After the piston passes the by-pass the movement of the piston is retarded by the liquid confined in front of the piston and which can escape only by leakage around the piston.
The shaft 4' passes up through Chamber 2 and is provided with a crescent-shaped upper end to fit within a correspondingly shaped opening in the inner end of the lever-arm 14. Located within the spring-chamber 2 and loosely surrounding shaft 4 is the ratchetsleeve 13. This sleeve is either directly or indirectly connected to the inner end of the spring 5 and connects the latter to the shaft,
so that when the shaft 4 is turned by the opening of the door the spring will be wound up or compressed, and when the door is released the spring will then unwind or expand and operate to close the door.
The lever-arm 14, as before stated, is secured on the upper end of shaft 4, and the free end of the jointed section thereof is secured to the door-frame in the usual manner. The lever-arm is provided at its inner end with an elongated slot 15 for the reception of the rectangular plate or pawl 16, which lat- ;ter engages the teeth 17 of the ratchet-sleeve 13 and locks the sleeve and its connected spring and the lever-arm together. Thepawl 16 is of greater width than the thickness of the lever-arm through which it passes, and the slot in said arm is of such size 'asytopermit free vertical movement of the pawl without anylateral movement. The pawl is provided on one side, and preferably near-its T (tZZ whom it may concern:
Beit known that I, WARREN Hy-TAvLoa, of Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Lever-Arms for Door Checks and Closers; andI do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
My invention relates to an improvement in lever-arms for door checks and closers, and while it is designed particularly for use in con nection with liquid door checks and closers it may be used with any construction wherein a pawl-and-ratchet connection is employed between the lever-arm and spring.
The object of the invention is to provide a reversible lever-arm with a vertically-sliding pawl constructed to fall by gravity and always depend below the arm in a position to engage the teeth of the ratchet-wheel; and it consists in the details of construction and cornbination of parts, as will be more fullydescribed, and pointed out in the claims.
In the accompanying drawings, Figure l isa view in vertical section, showing a doorcheck with my improvement appliedthereto. Fig. 2 is a view in longitudinal section of the, lever-arm and pawl. Fig. 3 is a plan view of same. Fig. 4 is a view in transverse section, and Fig. 5 is a view in perspective of the pawl.
1 represents a horizontal cylindrical casing Closed at its ends and provided on its top with a cylindrical chamber 2 and with lips 3, having screw-holes therein for the attachment of the device to a door. The shaft or spindle 4 and the spring 5 are located within the chamber 2, the shaft extending out through the top of said chamber and also through its bottom into horizontal chamber 1, the bearing for the shaft between the two Chambers being packed to prevent the passage of oil or .45 liquid up into the spring-chamber 2.
The crank 6 is secured to the lower end of shaft 4 and is connected by pitman 7 with the piston or other checking-surface 8, the latter preferably having one or more valved open- Center, with a vertical rib 18, which latter fits within a corresponding groove in the arm and absolutely prevents any tilting movement of h the pawl. The rib 18 projects on opposite sides of the arm and is bent laterally at its ends, so as to overlap the arm and prevent the withdrawal or displacement of the pawl. With this construction it will be seen that the pawl has at all times a bearing throughand thenpermitted to fall back into engage- I ment with theteeth.
It is evident that changes in the form and construction of the several parts might be resorted to without departing from the spirit and scope of my invention, and hence I would have it understood that I do not confine myself to the details herein shown and described, but consider myself at liberty to make such changes as fairly fall within the spirit and scope of my invention.
Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-.- V
1. In a door-closer, a lever-arm having an elongated slot, a vertically sliding pawl mounted in the slot, and means for preventing vertical displacement of the pawl.
2. In a door-closer, a lever-arm having an elongated slot therein, and a vertically-sliding pawl of greater width than the thickness of the arm and provided on its edges with projections overlapping the arm for preventing displacement of the pawl.
3. In a-door-closer, a lever-arm having an elongated slot and a groove opening into said slot and a vertically-sliding pawl mounted in the slot and havinga rib resting in the groove.
4:. In a door-closer, a lever-arm having an elongated slot and a groove opening into said slot, and a vertically-sliding pawl mounted in the slot and having a rib resting in the groove, and also provided with projecting lips overlapping the wall of the slot for preventing the displacement of the pawl.
In testimony whereof I have signed this specification in the presence of two subscribing witnesses.
WARREN I-I. TAYLOR.
Witnesses:
SCHUYLER MERRITT, F. T. ToWNE.
US14857603A 1903-03-19 1903-03-19 Lever-arm for door checks and closers. Expired - Lifetime US729697A (en)

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