US1434325A - Lock - Google Patents

Description

F. 0. BROWN. LOCK.

APPLICATION HLED OCT. 3|, 1921.

I ,4E34L325}, Patented 0015.31, 1922.

2 SHEETSSHEET ll jig/dime figgg BY J ATTORNEY F. C. BROWN.

LOCK. APPLICATION FILED OCT. 31, 1921.

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FOYDICE C. BROWN, OF SELlVIA, CALIFORNIA.

LOCK.

Application filed October 31, 1921. Serial No. 511,790. To all whom z't may concern. the drawings which accompany and which Be it known that I, FOYDICE C. BROWN, form part of this specification. a citizen of the United States, residing at In the drawings Selma, in the county of Fresno and State Figure 1 is an elevation of portion of a of California, have invented new and useful slidable door showing the same in contact- Improvements in Locks, of which the toling engagement with its janib and having lowing is a specification. thereon a lock in accordance with this in- My present invention has reference to a vention. lock for freight car doors. Figure 2 IS a sectional view, on an en 10 My primary object is to simplify and imlarged scale, and approximately on the line prove the existing art by producing a lock- 22 of Figure 1. ing means between a sliding door and the Figure 3 is a sectional view on the line jamb therefor which will be automatically 3-3 of Figure 1. effected by the movement of the door against Figure 4c is a view looking toward the 15 the jainb, and in which suitable sealing edge of the door with the lock thereon. means is provided for the locking means. Figure 5 is a perspective view of the lock It is a further object to produce a lock casing showing the arrangement of the ing means between a sliding door, such as pivoted tumbler therein.

the door of a freight car, andtlie jamb there- Figure 6 is a perspective view of the tum- 20 for Which shall be of an extremely simple bler. construction, cheaply manufactured, readily Figure 7 is a similar view of the swiveled applied, automatic in action when the door head member or bolt.

is moved against the jamb, and which shall -Referring now to the drawings in detail,

be positive in such action. the'nuineral. 1 designates a portion of a car,

25 It is a still further object to produce a the slidable door which normally covers locking means which is especially designed the opening in the side thereof and which for latching a slidable car door to the jamb is mounted on suitable tracks, and 3 the jamb therefor, in which a right angular plate against which one end of the door abuts comprising a look casing, is secured to the when the door is closed.

30 end and to the side of the door, said plate In carrying out my invention 1 provide having the face thereof secured to the end the janib 3 with a transverse opening t, of the door provided with a round opening the edges or faces of the jamb being proand having pivoted on its inner face a flat vided with preferably rectangular sockets tumbler which is substantially rounded in 5 that communicate with the opening it.

35 plan and which, incident to the weight Through the opening there is passed a bolt thereof has one of its ends, which is slotted, 6. T he bolt, in the present instance, has projected through the side plate of the lock its head formed on its opposed sides with casin and its body portion partly projected parallel extensions 7 that terminate in ininto t e opening in the face plate of the caswardly directed, flanges S, the said ilangcs ing, while on the doorjamb there is swiveled being received in a groove 9 in the cross a member having a conical head. which is sectionally rounded shank 10 in the bolt designed, when the door is moved against member of the improvement. The head .11 the jainb to contact with the tumbler to of the bolt is, of course, enlarged with reswing the same in the casing and thereafter spect to the thickness of its shank and the 45 permit of the tumbler gravitating into enouter face of the head 11 is cone-shaped. 10o gagement with the head, and the lower and The head pro ects through the socket on slotted end of the said tumbler passing the inner face of the jamb, and screwed on through the referred to slot or opening in the bolt there is a nut 12 that is in contactthe side plate of the casing for the reception ing engagement with the inner wall of the so of asuitable seal. said socket. The opposite end of the bolt The foregoing, and other objects which is also engaged by a nut 13 which is rewill appear as the nature of the invention is ceived in the socket on the end or face of better understood, may be accomplished by the jamb opposite the ust referred to socket. a construction, combination and operative the nut 13, of course, contacting with the 55 association of parts, such as is disclosed by inner wall of the last mentioned socket 5.

The construction is such that the bolt is supported on the jamb, and because of its shank being received in the socket 5 is permitted a limited swinging movement in any direction, the weighted head of the bolt normally holding the same at a dowi'iward angle.

The casing of the lock comprises a right angular plate, the portion thereof which is secured to the edge of the door 2 confronting the jamb will, for the sake of convenience be referred to as the face plate and. is indicated by the numeral 14:, while the opposite angle plate, which is arranged on and secured to the outer face of the door will hereinafter be referred to as the side plate and is indicated by the numeral 15. The edge of the door on which the face plate is arranged is provided with a depression'16, the said depression being less than the length of the face plate, that is, when the face plateis projected beyond the edge of the door for the thickness thereof. It is, of course, to be understood that both the face and side plates of the lock casing will.

be let in the door. The means for-securing the face plate to the edge of the door are preferably in the nature of lag screws 17, the means for securing the side plate to the side of the door being preferably in the nature of a bolt 18 that passes through a suitable opening in the preferably outer and reduced end of the said side plate and through the door. This bolt is engaged by a nut 19 that is let into a socket on the in.-

ner face of the door, and suitable means, broadly indicated by the numeral 20, are

I provided for holding the bolt 18 and the nut 19 against turning. The means 20 are not essential even should the bolt 18 be removed, when the door is closed, the lock cannot be tampered with without inflicting perceptible damage to the casing and without breaking the seal which engages the weighted tumbler which is presently to be described.

The face plate i l of the lock casing is provided with a round opening 2i which is arranged in a line with the conical head ll. of the bolt so that the bolt will be received through the said opening and into the re ferred to depression in theend of the door, when the door is moved on its tracks against the jamb.

Pivotally secured, as at 22, adjacent to the upper and outer corner of the face plate 141-, but on the inner face of the said face plate is the tumbler 23. The tumbler comprises a flat metallic member which is substantially semi-cylindrical in plan. F or distinction, the pivoted end of the tumbler is indicated by the numeral 24;, and the same may have arranged upon its inner edge, or the edge thereof opposite that which partly covers the opening 2i which may be in the path of contact with the upper securing elements for the face plate for limiting the inward swinging of the tumbler in the lock casing. The opposite or lower portion of the tumbler is gradually widened, as at 25, and from thence reduced to provide an extension 26 that passes through an opening 27 in the side plate 15, at its juncture with the face plate 14: of the lock casing. The extension is slotted, as at 28. The widened lower end of the tumbler, together with its extension, and also incident to the manner in which the tumbler is pivotaliy secured to the lock casing is influenced by the weight thereof, so that the slot 28 has its inner wall in a line with the, outer face of the side plate 15 when the tumbler is in bolt engaging position. The inner edge of the upper portion 24 of the tumbler is preferably bowed outwardly from its pivot to the rounded central portion of the said tumbler, and the lower part of this bowed portion is normally received opposite the upper portion of the rounded opening 21. The central and inner edge of the tumbler may be substantially straight, as indicated by the numeral 29, and this edge is also normally positioned to partly close the opening 21. The outward swinging of the, lock through its casing is limited by the contact of the shoulders thereon with the inner face of the side plate 15 of the casing. From the foregoing, it will be apparent that when the door is slid to bring its end against the jamb, the headed end of the swiveled bolt will be guided through the opening 21 in the lock casing, the conical end of the said bolt influencing the tumbler to swing the same inwardly of the lock casing and when the rear face or shoulder of the head of the bolt enters the depression, the tumbler will gravitate so that its inner edge will engage with the shoulder on the inner face of the head of the bolt and in this manner the door is automatically latch ed to the j amb. Of course, the door cannot be moved to open position until. a pressi'lre is exerted upon the projecting end 26 thereof to force the tumbler inwardly of the casing. Also by swivelling the bolt and pivotally supporting the tumbler, the door cannot be released from the jamb by any shocks or jars to which the car may be subjected. However, to positively hold the tumbler in looking position, when the ear is enroute, I pass through the slot 28 in the outer end or extension 27 of the tumbler 28 a seal29 of the ordinary character employed on railways.

It is thought that the foregoing description, when taken in connection with the drawings will fully set forth the construction, operation and advantages of. the improvement, but it is also thought necessary to add that the nature of the invention is such as to permit of the einployment of modificamenses tions in the construction and arrangement of the several parts thereof and consequently I am not to be limited to the precise construction shown and described, but am entitled to all such departures therefrom as fall within the scope of what is claimed.

Having described the invention, I claim 1. In combination with a sliding door and a jamb therefor, of a bolt member including a shank having an enlarged outer cone-shaped head and said shank being connected to the jamb, a pivotally supported tumbler on the edge of the door opposite the jainb, said tumbler comprising a fiat member which is arched in plan and which has its inner edge in the path of contact with the conical head of the bolt and designed to be engaged thereby, when the door is moved against the jamb, and by virtue of such engagement to move off of the head and to engage the shank of the bolt directly to the rear of the head, and means for limiting the swinging of the tumbler in two directions.

2. In combination with a sliding door and a jamb therefor, of a swiveled bolt having an outwardly projecting cone-shaped head on the jamb, a lock casing comprising a right angular plate secured to the edge of the door next the jamb and to the side of the door, EiilCl casing having a round opening therethrough in a line with the head of the bolt and designed to receive the head therethrough when the door is moved against the jamb, a tumbler having a lower weighted end pivoted in the casing and comprising a flat member which is substantially round in plan and which has its lower free end weighted whereby said tumbler will swing to cause its inner edge to be partly projected into the bolt opening in the lock casing to arrange the same in the path of contact with the head of the bolt, means limiting the swinging of the tumbler in this direction, means limiting the swinging of the tumbler in an opposite direction, and the lower end of the tumbler having a slotted extension passing through an opening in the side plate of the lock casing.

In testimony whereof I afiix my signature.

FOYDICE C. BROWN.

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