US1125066A - Door locking and releasing device. - Google Patents

Description

W. L. CONWELL.

DOOR LOCKING AND RELEASING DEVICE.

APPLIGATION FILED 00T. 12, 1914| 1,125,066. Patented 12111.19, 1915.

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THE NoRR/S PETERS CO., PHOTO-LITNO. WASHING rDN. D. C,

. W. L. CONWELL.

DOOR LOOKING AND DELEASING DEVICE.

APPLICATION FILED OOT.12,1914. l

Patented. Jan. 19, 1915.

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TORNEY THE MORRIS PETERS co.. PHOTOALITHO.. WASHING rON, D. C.

W. L. GONWELL. DooD LOCKING AND DBLEASING DEVICE.

A IIIIIIIIIIIIIIIII 0T. 111111 4. 1,125,065, Patented Jan.19,1915.

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WITNESSES v 7% my@ CO @By/M MM. 1/ M y ATTORNEY WALTER L. CONWELL, OF UPPER MONTfLl-QR, NEW-ERSEY.

DOOR LOCKING AND RELEASE-NC- DEVICE.

Specification of Letters Patent.

Patented J an. 19, 1915.

Application filed October 12, 1914. Serial No. 866,222.

To all whom it may concern Be it known that i, VALTER L. CoNwnLL, a citizen of the United States, and a resident of Upper Montclair, in the county of Essex and State of New Jersey, have made and invented certain new and useful Improvements in Door Locking and Releasing Devices, of which the following is a specification.'

My invention relates to an improvement in door locking and releasing devices, and more particularly designed for use in connection with trap doors for vestibule cars.

As is well known, it frequently happens that, by reason of the accumulation of dirt, ice and snow, and other foreign material, the spring or springs, utilized for raising or opening the trap door, when released from the catch or lock, fail in their functions, the door failing to open unless some force, other than the tension of the spring or springs, is applied thereto. To overcome this objection, I have designed a lock which, by a partial rotation of the handle, releases the door therefrom, and which, if the tension on the spring fails to raise or open it, by a further partial rotation of the handle, slightly lifts or forces upwardly the free end thereof', thus permitting the spring or springs to completely raise or open it. In other words, the lock is so constructed and arranged that if the door fails to raise4 or open upon being released from the catch,

it, the loclr, will at once force it open, to ber completely raised or lifted by the spring employed for that purpose.

A further object of my invention is to construct a lock of the character described which shall consist of but few parts, cheap to manufacture, and easily and readily assembled, and with these and other ends in view, consists in certain novel features of construction and combinations of parts as `will be hereinafter fully described and as indicated by the arrow, the locking detent and opening lever being shown in their normal positions to retain the trap door in its closed position. Fig. 4L- is a view similar to that shown in Fig. 2, the several parts, however, being shown in their relative positions when the door is released from the locking detent, this view being taken on theline 4 4- of Fig. 5. f Fig. 5 is a sectional viewtalren on the line 5 5 of Fig. 4. Fig. 6 isy a view similar to that shown in Figs. 2 and 4, the parts, however, being shown in their relative positions at the time that the opening lever is forced below the free end of the trap door to raise or lift the same, this View being taken on the line 6 6 of Fig. 7, and Fig. 7 is a sectional view taken on the 'line 7 7 of Fig. 6. Fig. 8 is a perspective view of the lever for raising or lifting the free end of the trap door, and which l term the door lift, and Fig. 8a a sectional view takenthe end finish of the car body, and 16 thev end finish of the vestibule, the car body having secured thereto a bracket 17 to which the trap door 1S is hinged, the spring-actuated hinge being inclosed within the casing 19 whereby to automatically lift or raise the door to its open position when the free end thereof is released from the lock or catch, the free end of said door resting upon the buder wing plate 2() secured to the `buffer wings 21, as illustrated in Fig. 1 of the drawings. As is well known, this trap door 18, when lowered or closed, forms a part of the car platform, doors 22being employed to inclose the same to form a complete vestibule.

To the plate 20 is secured the box or casing of my improved device, this boXor casing comprising a body 23, Fig.; 10, consisting of the vertical sides 24:, and the rear vertical plate 25, these sides being flanged outwardly at their lower edges as illustrated at 26. The forward end of this casing is contracted in its width in'order that the sides 211 may act as guides for the movable parts of the device as hereinafter described. This body 23 is provided with a horizontal partition plate 26a dividing the same into upper and lower compartments, the plate 26a being formed with a hole or opening 27 through which extends the releasing rod hereinafter referred to. To the upper side of the body is secured a cover or top plate 28, and to the under side a bottom plate 29, these plates being of proper shape or outline to conform to that of the body, and are also formed with holes or openings 30 for the passage of screws to secure them to the vertical sides 21. Within the body of the casing, and upon the partition plate 26, rests the latch 31, the forward end 32 of which is wedge-shape and provided with a shoulder 33, which end 32, when the latch is in its normal position as illustrated in Figs 1, 2 and 3, extends out beyond the casing and overlies and bears upon the free end of the door 18 for the purpose of retain ing the latter in its lowered or closed position'. The rear end of the latch 31 is enlarged to nicely lit within the enlarged portion of the casing and is provided with a cam opening 34 in which is located, and operates, a cam 35, the latter being secured to the vertical releasing rod 3G, which rod is supported in a bracket 37 secured to the end finish 16 of the vestibule, and, passing down through the openings in the casing, is supported in the lower end of the buffer wing 38, the lower end of the rod being provided with a handle 39 in order that the device may be operated from below, and also with a handle 410 near its upper end to permit the lock to be operated from Within the vestibule. The cam 35, when in its normal position as illustrated in Figs. 2 and 3, permits of the latch 31 to project out beyond the casing and to rest upon the free end of the trap door 18; when, however, the releasing rod 36 is rotated, the cam will also be rotated, and, bearing on the rear end of the latch 31, forces the same backwardly to the position asillustrated in Figs. d and 5, the latch being guided in its movement by the vertical sides 24 of the body of the casing. l/Vhen the parts are in this position, it will be seen that the trap door 18 is free to be raised or lifted by the spring hinge, the rear end of the latch being forced backwardly into the rear end of the casing, and the forward end of the latch withdrawn from the upper edge of the trap door 18, the shoulder 33 on the forward end of the latch striking or coming into close proximity to the forward end of the partition plate 26a, all as clearly illustrated in Figs. 4t and 7 of the drawings.

On the bottom plate 29 of the casing rests an opening lever a1, the forward end L13 of which is thickened and slides upon the plate 20,:this forward end of the lever being wedge-shape and formed with the shoulder 42, which, when the lever is moved backwardly in its normal position, strikes against, or comes in close proximity to,

the forward end of the bottom plate 29 as clearly illustrated in section in Fig. 3, said forward end being provided with the inclined face 41a adapted, as hereinafter described, to enter between the free end of the door 18 and the buffer wing plate 20, to slightly raise or lift the door, as illustrated in Fig. T. The rear end of this opening lever 41 is formed with a bent arm e5 which rests within the body of the casing 23 and upon the bottom plate 29 below the partition plate 26, the body of the lever a1 being of such width as to be nicely contained between the sides 2st of the casing, which sides act as a guide in the reciprocating movements of the lever. Fitting between the arm 45 and body of this opening lever L t1 is a cam 46, which, like the cam for operating the latch 31, is secured tightly to a squared portion of the releasing rod 36. lllhen the parts are in their normal positions as illustrated, for instance, in Figs. t?. and 3, the opening lever 4:1 occupies such a position as not to engage or interfere with the trap door 18. When the releasing rod 3G, however, is rotated either by the handle 39 or handle 4:0, this opening lever is moved forwardly from the position as illustrated in sectionin Fig. 3 to that illustrated in section in Fig. T, the wedge-shape end L13 of the lever, entering between the free end of the door 18 and the buffer wing plate 20, slightly lifting the door in order that it may be further lifted and opened by the lifting spring in the casing 19. The shape of the cam 46, however, is such that when partially turning the releasing rod 36, the latch 31 will be withdrawn from engage` nient with the door 18, that is, from the position as illustrated in Fig. 3 to the position as illustrated in Fig. 5, no movement of the opening lever taking place up to that time. Should the door, however, fail to lift or open, the releasing rod 36 is further turned until the cam 4G nieves from the position as illustrated in Figs. 4t and 5 to the positions as illustrated in Figs. 6 and 7, the cam fl-.G moving out of contact with the arm 145 into Contact with the rear end of the body of the opening lever 11, thus forcing said lever forwardly into the position as illust-rated in Fig. 7. 1n other words, by a partial rotation of the releasing rod, the .latch 31 is withdrawn from engagement with the door 18; should the door fail to open, the rod 36 is further turned, causing the opening lever 41 to enter between the lower forward edge of said door and the plate 20 upon which it rests, thus giving to said door an initial lift. Formed on, or secured to, the bracket 37 isa barrel or cylindrical casing 4t?, Fig'. 8a, A through whichpasses the releasing rod 36, and in which casing, and around the rod 36, is contained a coilspring 48,]one end of the spring being secured into the upper end of the stationary casing 47, the lower' end of the spring being secured in the sleeve 49 upon which the handle 40 is secured or formed, and which sleeve is tightly secured to the rod 36, the tension of the spring 48 being such that after the releasing rod 36 has been rotated to release the trap door, as before described, and the pressure or force on the rod 36 relieved, said spring will rotate the releasing rod in the opposite direction and return the parts to their normal positions as illustrated in Figs. land 2. TWhen the door is lowered, the free edge thereof, striking upon the inclined face 32 of the latch 31, will force the same rearwardly, permitting the door to be entirely closed, and the latch subsequently forced forwardly by reason of the tension of said spring 48.

From the foregoing it will be understood that the invention is exceedingly simple in construction, consists of but few parts easily and readily assembled, and that the same can be manufactured at a small cost. Furthermore, that it is exceedingly simple to manipulate, a partial rotation only of the releasing rod being necessary to withdraw the latch from engagement with the door to permit it to be raised or lifted; that should the saine bind or fail to lift by reason of the accumulation of foreign material in the cracks around the door, a further partial rotation of the releasing rod will be sufficient to free it and thus permit the spring to automatically raise it to its open position.

l/Vhat I claim is l. A door lock comprising a casing, a latch and an opening lever contained within said casing, said latch and lever provided with cam engageable ends, a releasing rod extending through said casing and provided, with cams within said casingvengaging said latch and lever cam engageable portions and adapted to positively advance and retract the same, and means carried by said releasing rod external of said casing providing for its manual rotation.

2. A lock for use with a trap door comprising a casing and provided with cam engageable portions, a latch and opening lever contained within said casing, a releasing rod having cams thereon and engaging said latch and lever cam engageable portions and adapted to positively advance and retract the same for their engagement with and disengagement from the said trap door.

3. A lock for use with a trap door comprising a casing, a latch contained within said casing, a releasing'rod provided with a cam engaging said latch, an opening lever contained within said casing, a cam on said rod engaging said lever, said cams adapted to positively advance and retract said releasing rod and opening lever, and means for rotating said rod.

4. A lock of the character'described comprising. a casing, a reciprocating latch contained Within said casing, a releasing rod passing through said casing and provided with a cam engaging said latch, an opening lever, a cam on said releasing rod and engaging with said lever, and` means for 'rotating said rod and cams for operating said latch and lever. f

5. A lock of the character described comprising a casing, a rotatable releasing rod passing through said casing, an opening lever contained within said casing, a cam on said releasing rod and engaging said lever, a superimposed latch contained within said casing, a cam on said rod and engaging said latch, and means for rotating said releasing rod and said cams whereby to operate said latch and lever. y

6. A lock for use with a trap door comprising casing, a rotatable releasing rod passing through said casing, a latch contained within said casing and normally engaging the trap door, an opening lever provided with a wedge-shape forward end and contained within said casing, cams on said. releasing rod and adapted to engage said latch and lever whereby, after said latch is moved rearwardly, said releasing lever will be moved forwardly.

7. A lock of the character described comprising a casing, a latch contained within said casing and normally projecting fory said latch and lever at the rear ends thereof and adapted to move said latch rearwardly, and said opening lever forwardly.

8. A lock for use with a trap door comprising a casing, a latch contained within said casing and having its forward end normally engaging said door, an opening lever contained within said casing and normally out of engagement with said door, a releasing rod passing through said casing and provided with cams within said casing and engaging said latch and lever whereby, when said rod and cams are rotated, said latch will be withdrawn from engagement with said door and the opening lever entered below said door.

9. A lock for use with a trap door oomprising a casing, the bottom wall of said casing forwardly projected and adapted to receive the edge `of said trap door thereon,

prising zt casing, the bottom Well of said casing forwardly projected and adapted to receive the edge of said trap door thereon, an opening lever disposed Within said casing provided With u Wedge-shaped end, said opening levell resting upon the bottoni Wall of said casing, and means engaging said opening lever adapted to force the saine between the bottom Wall of said casing and the edge oit said trap door, and a latch carried by Said casing and adapted to engage and lock in e closed position said trap door.

l1. A lock for use With a trap door comprising a casing with a longitudinally eX- tending partition, an opening lever and a latch slidably mounted Within the compari? ments Within said casing as deined by said partition and means engaging said opening lever and latch adapted to actuute the suine.

Signed at New York, borough of Manhattan, in the count57 or" New York and Stute of New York, this 8th day of October, A. D. 1911i.

G. H. ORD.

Uopies of this patent may be obtained for five cents each, by addressing the Commissioner of atents.

Washington, D. C.

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