US125808A - Improvement in door-catches for railroad cars - Google Patents

Improvement in door-catches for railroad cars Download PDF

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Publication number
US125808A
US125808A US125808DA US125808A US 125808 A US125808 A US 125808A US 125808D A US125808D A US 125808DA US 125808 A US125808 A US 125808A
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Prior art keywords
door
catch
catches
hook
improvement
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Expired - Lifetime
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
    • E05C19/02—Automatic catches, i.e. released by pull or pressure on the wing
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00—Closure fasteners
    • Y10S292/15—Door, checks, floor
    • 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
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/0876—Double acting
    • Y10T292/0878—Sliding
    • Y10T292/0879—Roller
    • 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
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/0876—Double acting
    • Y10T292/0883—Swinging

Definitions

  • This invention consists in the combination of ahook-ended leverlike catch pivoted within a shell, which is to be secured to the floor of the carand is actuated by a spring; with a roller supported in a suitable bearing-piece, which is to be secured to the lower part of the door, whereby a very cheap and efiective catch is produced which is automatic in its operation.
  • Figure 1 is a side view of the door-catch, showing it applied.
  • Fig. 2 is a central longitudinal section of the same; and
  • Fig. 3 is a plan thereof.
  • A is a case or shell, within which the catch D is secured.
  • This shell is open at its one end and adjacent portion of its top, and also at the bottom, with the exception of a strap or cross'piece, f, and is provided with lugs a a, by means of screws, passing through which the shell is secured to the floor F of the car, behind the door G, in such position that the door, when opened, shall come in contact with the catch B.
  • the catch is pivoted into this shell by a pin or pivot, b, so that its forward end projects through the open end of the shell, which is presented toward the open door.
  • This catch is or may be straight throughout its length, but on the upper side of its projecting end there is a hook, 0, some distance in rear of which there is a projection, d.
  • E is a spring, bent double and secured in place by a pin, g. One end rests on the strap or cross-piecef in the shell and the other bears against the forward portion of the bolt B.
  • O is a frame or bearing-piece, in which a roller, D, is supported. It is provided with lugs e e, which are secured by means of screws to the lower portion of the door, in such position relatively to the catch B that the hook 0 may hook under it.
  • the hook. is so formed, as shown in Figs. 1 and 2, that its point will not lap the roller D above the center, and hence that it will never make an absolutely positive catch, but will slip from under the roller when force enough is applied to the door to overcome the effect of upward pressure of the spring.
  • This door-catch is entirely automatic in its operation, for, as the door swings open, the roller comes in contact with the rounded latchlike end of the hook, and pressing against it forces it down, and as soon as the roller passes the point of the hook 0 the catch is sprung up by the spring E, and the hook holds the roller and prevents the door from shutting.
  • To shut the door it is only necessary to pull the door forcibly, and the roller, bearing against the back of the hook, forces the bolt down so that the roller can pass over the hook, and the door is then free to shut.

Description

-C. GRAHAM.
lmprovement in Door-Catches for Railroad-"Cars.
" N 125, 0 PatentedApriHGJBTZ m I v III/I/I/ CHARLES GRAHAM, OF KINGSTON, PENNSYLVANIA.
IMPROVEMENT IN DOOR-CATCHES FOR RAILROAD CARS.
Specification forming part of Letters Patent No. 125,808, dated April 16, 1872.
Specification describing an improved Door- Oatch for Railroad Oars, invented by CHARLES GRAHAM, of Kingston, in the county of Luzerne and State of Pennsylvania.
This invention consists in the combination of ahook-ended leverlike catch pivoted within a shell, which is to be secured to the floor of the carand is actuated by a spring; with a roller supported in a suitable bearing-piece, which is to be secured to the lower part of the door, whereby a very cheap and efiective catch is produced which is automatic in its operation.
In the accompanying drawing, Figure 1 is a side view of the door-catch, showing it applied. Fig. 2 is a central longitudinal section of the same; and Fig. 3 is a plan thereof.
Similar letters of reference indicate corresponding parts in all the figures.
A is a case or shell, within which the catch D is secured. This shell is open at its one end and adjacent portion of its top, and also at the bottom, with the exception of a strap or cross'piece, f, and is provided with lugs a a, by means of screws, passing through which the shell is secured to the floor F of the car, behind the door G, in such position that the door, when opened, shall come in contact with the catch B. The catch is pivoted into this shell by a pin or pivot, b, so that its forward end projects through the open end of the shell, which is presented toward the open door. The under side of this catch is or may be straight throughout its length, but on the upper side of its projecting end there is a hook, 0, some distance in rear of which there is a projection, d. E is a spring, bent double and secured in place by a pin, g. One end rests on the strap or cross-piecef in the shell and the other bears against the forward portion of the bolt B. O is a frame or bearing-piece, in which a roller, D, is supported. It is provided with lugs e e, which are secured by means of screws to the lower portion of the door, in such position relatively to the catch B that the hook 0 may hook under it. The hook. is so formed, as shown in Figs. 1 and 2, that its point will not lap the roller D above the center, and hence that it will never make an absolutely positive catch, but will slip from under the roller when force enough is applied to the door to overcome the effect of upward pressure of the spring.
This door-catch is entirely automatic in its operation, for, as the door swings open, the roller comes in contact with the rounded latchlike end of the hook, and pressing against it forces it down, and as soon as the roller passes the point of the hook 0 the catch is sprung up by the spring E, and the hook holds the roller and prevents the door from shutting. To shut the door it is only necessary to pull the door forcibly, and the roller, bearing against the back of the hook, forces the bolt down so that the roller can pass over the hook, and the door is then free to shut.
Claim. 3
I The combination of the hook'e nded leverlike catch B, arranged within the shell A and actuated by a spring, E, with the roller 1), supported in theframe O, substantially as and for the purpose herein set forth.
CHAS. GRAHAM.
Witnesses W. H. S UAREY, R. A. HntronIsoN.
US125808D Improvement in door-catches for railroad cars Expired - Lifetime US125808A (en)

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US125808A true US125808A (en) 1872-04-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060006677A1 (en) * 2004-07-09 2006-01-12 Washington Matthew P Locker latch assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060006677A1 (en) * 2004-07-09 2006-01-12 Washington Matthew P Locker latch assembly
US20090206614A1 (en) * 2004-07-09 2009-08-20 Washington Matthew P Locker latch assembly

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