CA1183183A - Anti-pilferage device for freight cars - Google Patents
Anti-pilferage device for freight carsInfo
- Publication number
- CA1183183A CA1183183A CA000409218A CA409218A CA1183183A CA 1183183 A CA1183183 A CA 1183183A CA 000409218 A CA000409218 A CA 000409218A CA 409218 A CA409218 A CA 409218A CA 1183183 A CA1183183 A CA 1183183A
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- Canada
- Prior art keywords
- latch
- keeper
- door
- release
- release member
- Prior art date
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Abstract
ABSTRACT
Anti-pilferage device for box car doors of both the sliding and plug type in which the device is toward the top of the door out of reach of a person standing on the ground and only accessible to release the latch from the top by a person standing on a loading dock. The latch cooperates with a keeper and both the keeper and latch are enclosed so access cannot be had to the latch to release the latch by a pole or elongated tool and the like.
A pivoted release member is provided for the latch which extends above the latch plates forming a housing for the latch toward the rear ends of said latch plates and is transversely pivoted thereto and is inwardly of the sides of said latch plates to prevent access to said release member by a pole or other tool. The release member has camming engagement with the latch and is operable by hand to cam the latch out of engagement with the keeper and accommodate opening of the door.
Anti-pilferage device for box car doors of both the sliding and plug type in which the device is toward the top of the door out of reach of a person standing on the ground and only accessible to release the latch from the top by a person standing on a loading dock. The latch cooperates with a keeper and both the keeper and latch are enclosed so access cannot be had to the latch to release the latch by a pole or elongated tool and the like.
A pivoted release member is provided for the latch which extends above the latch plates forming a housing for the latch toward the rear ends of said latch plates and is transversely pivoted thereto and is inwardly of the sides of said latch plates to prevent access to said release member by a pole or other tool. The release member has camming engagement with the latch and is operable by hand to cam the latch out of engagement with the keeper and accommodate opening of the door.
Description
SPECIFICA~ION
The losses from railway Preight cars such as box cars and from highway trailer or trailers carried on flat cars, are a large factor in ~he cost of shipment by rail. These losses particularly occur when the cars àre in the yard or on a siding awaiting transfer to an unloading station or to another destination, even though locks and seals are provided for the doors and the seals are not intentionally bxoken except when the car is s~anding along an unloading dock. The locks and seals are readily accessible from the ground both with sliding doors and plug types of doors, both of which doors are in commong use at the present day. Even though the locks for these doors are sturdy their accessi-bility from the ground requires little ingenuity and energy to release the locks with the result that the freight yards must be continuously policed and even then the loss due to pilferage is substantial.
The anti-pilferage device for box cars or other lading carrying vehicles, such as txailers on the road or carried on flat cars ! iS positioned so that it cannot be released from the ground even with a pole or other instrument and can only be released by a man standing on the loading dock and even then cannot be pried or otherwise moved to a release position except by an authoriæed person knowing how to release the lock.
The anti-pil~erage device supplements ~he usual door locks and is toward the top of the door where it is inaccessible except from a loading dock and is entirely enclosed from the bottom and is only open a~ the ~op to accommodate acce!ss to a release member for the lock which cams the lock to a release position and thereby accommodates release of the lock and opening of the door.
An object of the present invention is to provide a simple and improved means for protect:ing lading carrying vehicles from pilferage.
A further object is to provide a simplified form of protective device for box car doors which cannot be released from the ground while the car is standing in the yard ox on a siding and is only accessible for release from an elevated platform such as a loading dock.
An advantage of the invention is that the anti-pilferage device is adaptable to various types of box car doors and i~s moving parts are concealed so tha~ the lock cannot be released by a pole and the like and can only be released from the top of the lock by a man on the loading dock knowing the operation of the lock.
Another advantage of the invention is that the device is at the top of the door of either the sliding or plug type and then is only accessible for release from an elevated loading dock and cannot be released from the bottom of the device or the sides thereof.
Still another advantage is that the device is of a simplified form with a minimwn number moving parts and is adapted to both sliding and plug type doors.
Other objects, features and advantages of the invention will be readily apparent from the following description of a preferred embodiment thereof, taken in conjunction with the accompanying drawings, although variations and modifica-tions may be effected without departmen~ from the spirit and scope of the novel concepts of the following disclosure.
~ ~3~13 ON THE DRAWINGS
Figure 1 is a view in side elevation of a railway box car showing the door closing the doorway to the car and diagrammatically showing the anti-pilferage device construc ted in accordance with the principles of the present invention mounted on the door ancl a door post defining one margin of the doorway.
Figure 2 is a fragmentary sectional view taken sub-stantially along line II~II of Figure 1.
Figure 3 is a side elevational view of the anti-pilferage device shown in Figure 2.
Figure 4 is a sectional view taken substantially along line IV-IV of Figure 3.
Figure 5 is a sectional view taken alony the latch and keeper and showing the latch passing over the keeper as the door is moved to its open position.
Figure 6 is a fragmentary plan view illustrating the device of the invention applied to a plug type door.
Figure 7 is a view in side elevation of the device shown in Figure 6.
Figure 8 is a sectional view taken substantially along line VIII-VIII of Figure 7.
Figure 9 is a fragmentary sectional view diagramma-tically showing the door in its closed position and showing the anti-pilferage device constructed in accordance with the principles of the present invention in its locked position.
Figure 10 is a view in side elevation illustrating a modified form oE anti~pilferage device adapted for a plug type door which may be constructed in accordance with the principles of the present invention.
3:~13 Figure 11 is a fragmentary sectional view taken sub stantially along line XI-XI of Figure 10; and Figure 12 is a fragmentary sectional view taken sub-stantially along line XII-XII of Figure 10.
In the embodiment of the invention illustrated in the drawings, I have shown in Figure 1 a railway box car door 10 slidably mounted to move along an opening 11 to close said opening. The box car and slidable door are conventional and the door is locked in its closed position by conventional locking means generally indicatecL by reference numeral 13, diagrammatically shown herein, and not described or shown in detail since freight car door locks may be of various conventional forms. I have also shown a door post 14 and an anti-pilferage device 15 constructed in accordance with the principles of the present invention mounted on the door and door post adjacent the top of the door in a position that cannot be reached from the ground and can only be reached when the car is along a loading dock for loading or un-loading.
In Figure 2, I have shown a horizontal sectional view taken through the anti-pilferage device and have shown the anti-pilferage device as including a keeper 16 mounted on the door post and enclosed in a housing 17 which may be mounted on the door post, and extend outwardly therefrom along the car in a direction away from the door opening. The keeper is shown in dot~ed in Figures 3 and 5 as enclosed in the housing 17 extending along and outwardly of the door post a distance sufficient to accommodate a latch 19 to move into a closed position upon sliding movement of the door to its closed position and engage the keeper to lock the door in its closed position in addition to the lock 13 or the bottom of the door.
33~a~3 The keeper is protected from access by pilfers by the housing 17. Said housing extends along the bottom o~ the keeper and forms a mounting therefor as shown in F.igures 3 and 5 and also extends upwardly along the keeper and along the end and across ~he top of a latch 19, to prevent access to the latch by the fingexs or by a ~ar or other tool, and accommodates free movement of the latch to the open and close positions as shown in Figures 2 and 3, 4 and 5.
The latch 19 is transversely pivoted eccen~ric of its longitudinal center and toward the rear end of the latch on a transverse pivot pin 20 mounted at its oPposite ends in inner and outer parallel plates 21 and 22 respectively of a latch housing 23. The inner of said plates is welded or otherwise secured to the outer surface of the door 10, diagrammatically shown in Figure 1 as being a conventional sliding type of door~ The latch projects beyond the end of the door toward the door post 14 and as moved to i~s closed position is cammed to drop into the latched position shown in Figure 3.
Seal tabs 41 and 42 project outwardly of the adjacent ends of the housings 17 and 23, respectively and are aper tured to receive the conventional freight door seal (not shown~.
The latch 19 extends a substantial distance from the pivot pin 20 into the housing 17 for the keeper 16 and has an advance inclined strike surface 25 inclined down-wardly from the advance and thereof and terminating at its lower end into an upwardly inclined surface 26, leading to a vertical latching surface 27 adapted to have latching engagement with the keeper 16 as ~he door 18 is closed.
--5~
3~
The keeper 16 extends outwardly of the door post 14 within the housing 17 and has a peaked top 24 engageable with the strike surface 25 of the latch 19 during closing move-ment of the door to raise the latch and accommodate the latch to drop into the latched position shown in Figure 3.
The housing 23 for the latch includes the inner plate 21 welded or otherwise secured to the door. Said inner plate 21 is shown as bent outwardly to extend over the latch when in its latched and unlatched positions and ~hen down-wardly along the latch to the plate 22 in alignment there-with. The downwardly extending portion stops short of the end of the plate 22 but the plate 21 extends to the end of said plate 22 to enable the pivot 21 to be mounted at its ends, with the latch 19 therebetween.
The housing 23 also has a portion 29 extending across the bottom of the latch to close the bottom of the housing and prevent tampering o ~he latch from beneath. The bottom portion 29 of the housing extends to the plate 21lto which it is welded or otherwise secured, to comple~ely house the latch except for an open portion between said plates 21 and 22 at the rear end portion of ~he plate 22, to accommodate a release member 30 to project above the plate 22. An end portion 28 of the plate 22 extends inwardly to the plate 21 to which it may be welded or otherwise secured.
The release member 30 is pivoted between the plates 21 and 22 on a pivot pin 31 spaced rearwardly of the pivot pin 20 and above said pivot pin. A counterweight 33 is mounted on the upper end of the release member 30 and extends above the plates 21 and 22 to affor access to the release member 30 by the thumb or other finger o*
the hand.
~3~33 The ~ounterweight 33 at the upper end of the release member 30 is within the outer margin of the plate 22 (figure
The losses from railway Preight cars such as box cars and from highway trailer or trailers carried on flat cars, are a large factor in ~he cost of shipment by rail. These losses particularly occur when the cars àre in the yard or on a siding awaiting transfer to an unloading station or to another destination, even though locks and seals are provided for the doors and the seals are not intentionally bxoken except when the car is s~anding along an unloading dock. The locks and seals are readily accessible from the ground both with sliding doors and plug types of doors, both of which doors are in commong use at the present day. Even though the locks for these doors are sturdy their accessi-bility from the ground requires little ingenuity and energy to release the locks with the result that the freight yards must be continuously policed and even then the loss due to pilferage is substantial.
The anti-pilferage device for box cars or other lading carrying vehicles, such as txailers on the road or carried on flat cars ! iS positioned so that it cannot be released from the ground even with a pole or other instrument and can only be released by a man standing on the loading dock and even then cannot be pried or otherwise moved to a release position except by an authoriæed person knowing how to release the lock.
The anti-pil~erage device supplements ~he usual door locks and is toward the top of the door where it is inaccessible except from a loading dock and is entirely enclosed from the bottom and is only open a~ the ~op to accommodate acce!ss to a release member for the lock which cams the lock to a release position and thereby accommodates release of the lock and opening of the door.
An object of the present invention is to provide a simple and improved means for protect:ing lading carrying vehicles from pilferage.
A further object is to provide a simplified form of protective device for box car doors which cannot be released from the ground while the car is standing in the yard ox on a siding and is only accessible for release from an elevated platform such as a loading dock.
An advantage of the invention is that the anti-pilferage device is adaptable to various types of box car doors and i~s moving parts are concealed so tha~ the lock cannot be released by a pole and the like and can only be released from the top of the lock by a man on the loading dock knowing the operation of the lock.
Another advantage of the invention is that the device is at the top of the door of either the sliding or plug type and then is only accessible for release from an elevated loading dock and cannot be released from the bottom of the device or the sides thereof.
Still another advantage is that the device is of a simplified form with a minimwn number moving parts and is adapted to both sliding and plug type doors.
Other objects, features and advantages of the invention will be readily apparent from the following description of a preferred embodiment thereof, taken in conjunction with the accompanying drawings, although variations and modifica-tions may be effected without departmen~ from the spirit and scope of the novel concepts of the following disclosure.
~ ~3~13 ON THE DRAWINGS
Figure 1 is a view in side elevation of a railway box car showing the door closing the doorway to the car and diagrammatically showing the anti-pilferage device construc ted in accordance with the principles of the present invention mounted on the door ancl a door post defining one margin of the doorway.
Figure 2 is a fragmentary sectional view taken sub-stantially along line II~II of Figure 1.
Figure 3 is a side elevational view of the anti-pilferage device shown in Figure 2.
Figure 4 is a sectional view taken substantially along line IV-IV of Figure 3.
Figure 5 is a sectional view taken alony the latch and keeper and showing the latch passing over the keeper as the door is moved to its open position.
Figure 6 is a fragmentary plan view illustrating the device of the invention applied to a plug type door.
Figure 7 is a view in side elevation of the device shown in Figure 6.
Figure 8 is a sectional view taken substantially along line VIII-VIII of Figure 7.
Figure 9 is a fragmentary sectional view diagramma-tically showing the door in its closed position and showing the anti-pilferage device constructed in accordance with the principles of the present invention in its locked position.
Figure 10 is a view in side elevation illustrating a modified form oE anti~pilferage device adapted for a plug type door which may be constructed in accordance with the principles of the present invention.
3:~13 Figure 11 is a fragmentary sectional view taken sub stantially along line XI-XI of Figure 10; and Figure 12 is a fragmentary sectional view taken sub-stantially along line XII-XII of Figure 10.
In the embodiment of the invention illustrated in the drawings, I have shown in Figure 1 a railway box car door 10 slidably mounted to move along an opening 11 to close said opening. The box car and slidable door are conventional and the door is locked in its closed position by conventional locking means generally indicatecL by reference numeral 13, diagrammatically shown herein, and not described or shown in detail since freight car door locks may be of various conventional forms. I have also shown a door post 14 and an anti-pilferage device 15 constructed in accordance with the principles of the present invention mounted on the door and door post adjacent the top of the door in a position that cannot be reached from the ground and can only be reached when the car is along a loading dock for loading or un-loading.
In Figure 2, I have shown a horizontal sectional view taken through the anti-pilferage device and have shown the anti-pilferage device as including a keeper 16 mounted on the door post and enclosed in a housing 17 which may be mounted on the door post, and extend outwardly therefrom along the car in a direction away from the door opening. The keeper is shown in dot~ed in Figures 3 and 5 as enclosed in the housing 17 extending along and outwardly of the door post a distance sufficient to accommodate a latch 19 to move into a closed position upon sliding movement of the door to its closed position and engage the keeper to lock the door in its closed position in addition to the lock 13 or the bottom of the door.
33~a~3 The keeper is protected from access by pilfers by the housing 17. Said housing extends along the bottom o~ the keeper and forms a mounting therefor as shown in F.igures 3 and 5 and also extends upwardly along the keeper and along the end and across ~he top of a latch 19, to prevent access to the latch by the fingexs or by a ~ar or other tool, and accommodates free movement of the latch to the open and close positions as shown in Figures 2 and 3, 4 and 5.
The latch 19 is transversely pivoted eccen~ric of its longitudinal center and toward the rear end of the latch on a transverse pivot pin 20 mounted at its oPposite ends in inner and outer parallel plates 21 and 22 respectively of a latch housing 23. The inner of said plates is welded or otherwise secured to the outer surface of the door 10, diagrammatically shown in Figure 1 as being a conventional sliding type of door~ The latch projects beyond the end of the door toward the door post 14 and as moved to i~s closed position is cammed to drop into the latched position shown in Figure 3.
Seal tabs 41 and 42 project outwardly of the adjacent ends of the housings 17 and 23, respectively and are aper tured to receive the conventional freight door seal (not shown~.
The latch 19 extends a substantial distance from the pivot pin 20 into the housing 17 for the keeper 16 and has an advance inclined strike surface 25 inclined down-wardly from the advance and thereof and terminating at its lower end into an upwardly inclined surface 26, leading to a vertical latching surface 27 adapted to have latching engagement with the keeper 16 as ~he door 18 is closed.
--5~
3~
The keeper 16 extends outwardly of the door post 14 within the housing 17 and has a peaked top 24 engageable with the strike surface 25 of the latch 19 during closing move-ment of the door to raise the latch and accommodate the latch to drop into the latched position shown in Figure 3.
The housing 23 for the latch includes the inner plate 21 welded or otherwise secured to the door. Said inner plate 21 is shown as bent outwardly to extend over the latch when in its latched and unlatched positions and ~hen down-wardly along the latch to the plate 22 in alignment there-with. The downwardly extending portion stops short of the end of the plate 22 but the plate 21 extends to the end of said plate 22 to enable the pivot 21 to be mounted at its ends, with the latch 19 therebetween.
The housing 23 also has a portion 29 extending across the bottom of the latch to close the bottom of the housing and prevent tampering o ~he latch from beneath. The bottom portion 29 of the housing extends to the plate 21lto which it is welded or otherwise secured, to comple~ely house the latch except for an open portion between said plates 21 and 22 at the rear end portion of ~he plate 22, to accommodate a release member 30 to project above the plate 22. An end portion 28 of the plate 22 extends inwardly to the plate 21 to which it may be welded or otherwise secured.
The release member 30 is pivoted between the plates 21 and 22 on a pivot pin 31 spaced rearwardly of the pivot pin 20 and above said pivot pin. A counterweight 33 is mounted on the upper end of the release member 30 and extends above the plates 21 and 22 to affor access to the release member 30 by the thumb or other finger o*
the hand.
~3~33 The ~ounterweight 33 at the upper end of the release member 30 is within the outer margin of the plate 22 (figure
2) and has a plain face 35 engageable with the top of the plate 22 when the latch is in its latched position, and forming a stop for said release member, in a direction shown in Figure 3 as being a counterclockwise direction.
The counterweight 33 also extends to an inclined surface 36 of the latch 19 inclined downwardly from the top o said latch toward the rear end thereof. The inclined surface 36 terminates into a step 37, which in turn termi-nates into a lower step 39 having a rounded camming surface 40 at its rear end.
It should further be understood that the rear end portion of the latch has a bottom surface 42 inclined in an upward direction from a position in alignment with the pivot pin 20 to provide clearance between the lat~h and the inwardly projecking portion 39 of the plate 22, to prevent dirt which may lodge between the plates 21 and 22 from interfering with the opening and closing movement of the latch.
The latch ana keeper are, therefore, fully protected and release can only be attained by engaging the counter-weighted portion 33 of the release member 30 by the thumb or other finger and moving said release member in the direction, which in Figure 3 may~be a clockwise direction.
It should further ~e noted from Figure 5 that when the door is moved in the direction of the arrow, the trailing inclined portion 26 of the strike 25 will move upwardly along the traili.ng portion of the peak 24 of the k~eper to disengage the latch 19 from the keeper. The counter-weight 33 will t:hen move the release member 30 out of ~3~
engagement with the step 39, to release the latch and the release member 30 and counterweight 33 are so located as to be inaccessible from the ground or from the bottom of the latch and can only be moved to cam the latch to its released positi.on by a person on a loading platform and then reaching upwardly a substantial distance to effect intention-al release of the latch.
It should further be understood that the latch 19 is freely pivoted on the pin 20 and the release member is freely pivoted on the pin 31 to assure that the latch may be released by pushing the release member 30 to the right and camming the lever arm 41 of said release member to engage the step 39 and hold the latch in its released position to accommodate opening of the door.
It should further be understood that after the door is opened if the release member 30 should come out of released engagement with the latch, the latch may be closed upon camming of the latch by the strike surface25 of the latch and peaked surface 24 of the keeper to its closed position.
Referring now in particular to Figures 6, 7, 8 and 9 and the application of my anti-pilferage device to plug type freight car doors of the centex crank ~ype in which the door is supported for movement toward the door post and when in alignment with the door opening is cranked inwardly along ~5 the door opening to a position substantially flush with the side of the car and into engagement with an outer wall 43 of the post facing outwardly and terminatiny at its inner end into an end wall 44 ~acing the door opening. This cnstruction is diagrammatically shown in Figure 6 and it should be understood that each end of the door is recessed in the post in the same manner, as the door is cranked
The counterweight 33 also extends to an inclined surface 36 of the latch 19 inclined downwardly from the top o said latch toward the rear end thereof. The inclined surface 36 terminates into a step 37, which in turn termi-nates into a lower step 39 having a rounded camming surface 40 at its rear end.
It should further be understood that the rear end portion of the latch has a bottom surface 42 inclined in an upward direction from a position in alignment with the pivot pin 20 to provide clearance between the lat~h and the inwardly projecking portion 39 of the plate 22, to prevent dirt which may lodge between the plates 21 and 22 from interfering with the opening and closing movement of the latch.
The latch ana keeper are, therefore, fully protected and release can only be attained by engaging the counter-weighted portion 33 of the release member 30 by the thumb or other finger and moving said release member in the direction, which in Figure 3 may~be a clockwise direction.
It should further ~e noted from Figure 5 that when the door is moved in the direction of the arrow, the trailing inclined portion 26 of the strike 25 will move upwardly along the traili.ng portion of the peak 24 of the k~eper to disengage the latch 19 from the keeper. The counter-weight 33 will t:hen move the release member 30 out of ~3~
engagement with the step 39, to release the latch and the release member 30 and counterweight 33 are so located as to be inaccessible from the ground or from the bottom of the latch and can only be moved to cam the latch to its released positi.on by a person on a loading platform and then reaching upwardly a substantial distance to effect intention-al release of the latch.
It should further be understood that the latch 19 is freely pivoted on the pin 20 and the release member is freely pivoted on the pin 31 to assure that the latch may be released by pushing the release member 30 to the right and camming the lever arm 41 of said release member to engage the step 39 and hold the latch in its released position to accommodate opening of the door.
It should further be understood that after the door is opened if the release member 30 should come out of released engagement with the latch, the latch may be closed upon camming of the latch by the strike surface25 of the latch and peaked surface 24 of the keeper to its closed position.
Referring now in particular to Figures 6, 7, 8 and 9 and the application of my anti-pilferage device to plug type freight car doors of the centex crank ~ype in which the door is supported for movement toward the door post and when in alignment with the door opening is cranked inwardly along ~5 the door opening to a position substantially flush with the side of the car and into engagement with an outer wall 43 of the post facing outwardly and terminatiny at its inner end into an end wall 44 ~acing the door opening. This cnstruction is diagrammatically shown in Figure 6 and it should be understood that each end of the door is recessed in the post in the same manner, as the door is cranked
3 ~ 3 inwardly into its closed position, ater it has been moved into alignment with the door opening~
In Figure 7, a latch 45 is shown as pivoted between the parallel slide plates of a housing 46, like the housing 23, on a pivot pin 47 mounted at its ends in said side plates as in the form of the invention illustrated in Figures 1 through 5. Since the housing 46 is like the housing 23 in need not herein be shown or described further.
The latch 45 has a tapered nose 48 converging to a rounded end and ;s moved into the latched position shown in Figure 9, as the door is moved inwardly and the underside of said nose moves along an inclined advance side 51 of the keeper 50, as shown in Figure 8. As the latch moves to the peak of the keeper during movement of the door in the direction of the arrow to a closed position as shown in Fig-ure 6, the latch will drop along the inside of the keeper into a recess 52 of said Xeeper and lock the door from opening. It may be seen from Figures 6, 7 and 8 that the keeper recess 52 and the portion above the latch as it is in its locked position are all enclosed in a housing 53 to prevent the release of the latch from the keeper by hand.
A release member 54 like the release member 30 is pivoted between the side plates of the housing 46 on a pivot pin 55, mounted at its ends in the parallel side plates of said housing 46.
The release member 54 is like the release member 30 shown in Figure 5 and operates on ~he same pxinciples so need not be desc:ribed except ~o point out that said release member is moved to the righk to cam the latch into the re-lease position cshown b~ broken lines in Figure 7.
3~
It should here be understood tha~ the anti-pilferage device of Figures 6~ 7, 8 and 9 may be adapted for use on all types of plug type doors including center crank plug doors and double swinging types of plug doors and that S this anti pilferage device should not he construed as limited to one particular type of plug door.
In Figures 10, 11 and 1?, I have shown still another modified form in which my invention may be embodied.
In the embodiment shown in these figures, the latch lever and keeperare enclosed in individual housings for a greater portion of length of said members and are inaccessible ex-cept by engagement from the top of the housing for the latch lever by engaging the exposed portion of the counter-weighted portion of a release member 59. In this form of the invention as illustrated in Figures 10, 11 and 12, a latch lever 60 is eccentrically pivoted between plates 61 and 62 o~ a housing 63 on a transverse pivot pin 65 disposed adjacent the rear end of said latch lever. The latch lever has a right angled strike surface 66 engaging an inclined surface 67 of a peaked keeper 69 extending in a direction parallel to the door post and door opening.
As the door is moved to a closed position, the strike surace 66 of the latch will come into engagement with the inclined surface 67 o the keeper. This will cam the latch over the keeper to drop into the position shown by solid lines in Figure 12 with a recassed portion of the latch on opposite sides of the keeper.
1 @33 The re].ease member 59 is p.ivoted between the side plates of the housing 63 on a pivot pin 71, like the release members 30 and 54, is provided to release the latch from above the latch housing 63 as in the forms of antl-pilferage devices illustrated in Figures 1 througll 9.
It may be seen from the foregoing that the anti-pilferage device of the present invention may readily be adapted to various types of box car and trailer doors and is enclosed to prevent opening of the latch by hand except by operation of the release membex therefor, which is at ~uch an elevation and is spaced inwardly of its housing 50 that it cannot ordi~arily be reached by hand or by a bar or pole or other tool~
While the latch and keeper structure may be of various forms, it should be understood that an important part of the invention in addition to placing the anti-pilferage device at an elevation that it is inaccessible to pilferers and is enclosed so even poles or tools cannot release the release member due to the enclosing of all parts of the latch and keeper, and that the anti-pilferage device can thus only be operated to release the latch from above at an elevation that can only be reached from a loading dock.
In khe present disclosure the anti-pilferage device is located at least seven feet above the floor or bottom of the box car door and cooperates with the conventional. locks disposed adjacent the bottom of the door. It prevents opening of the door even though the bottom latches be in release positions.
Tabs 73 and 74 have registering aper~ured portions for a conventional seal, are shown in Figures 10 and 11 as 31~
extending outwardly of the outer side of the latch and keeper housings.
In Figure 7, a latch 45 is shown as pivoted between the parallel slide plates of a housing 46, like the housing 23, on a pivot pin 47 mounted at its ends in said side plates as in the form of the invention illustrated in Figures 1 through 5. Since the housing 46 is like the housing 23 in need not herein be shown or described further.
The latch 45 has a tapered nose 48 converging to a rounded end and ;s moved into the latched position shown in Figure 9, as the door is moved inwardly and the underside of said nose moves along an inclined advance side 51 of the keeper 50, as shown in Figure 8. As the latch moves to the peak of the keeper during movement of the door in the direction of the arrow to a closed position as shown in Fig-ure 6, the latch will drop along the inside of the keeper into a recess 52 of said Xeeper and lock the door from opening. It may be seen from Figures 6, 7 and 8 that the keeper recess 52 and the portion above the latch as it is in its locked position are all enclosed in a housing 53 to prevent the release of the latch from the keeper by hand.
A release member 54 like the release member 30 is pivoted between the side plates of the housing 46 on a pivot pin 55, mounted at its ends in the parallel side plates of said housing 46.
The release member 54 is like the release member 30 shown in Figure 5 and operates on ~he same pxinciples so need not be desc:ribed except ~o point out that said release member is moved to the righk to cam the latch into the re-lease position cshown b~ broken lines in Figure 7.
3~
It should here be understood tha~ the anti-pilferage device of Figures 6~ 7, 8 and 9 may be adapted for use on all types of plug type doors including center crank plug doors and double swinging types of plug doors and that S this anti pilferage device should not he construed as limited to one particular type of plug door.
In Figures 10, 11 and 1?, I have shown still another modified form in which my invention may be embodied.
In the embodiment shown in these figures, the latch lever and keeperare enclosed in individual housings for a greater portion of length of said members and are inaccessible ex-cept by engagement from the top of the housing for the latch lever by engaging the exposed portion of the counter-weighted portion of a release member 59. In this form of the invention as illustrated in Figures 10, 11 and 12, a latch lever 60 is eccentrically pivoted between plates 61 and 62 o~ a housing 63 on a transverse pivot pin 65 disposed adjacent the rear end of said latch lever. The latch lever has a right angled strike surface 66 engaging an inclined surface 67 of a peaked keeper 69 extending in a direction parallel to the door post and door opening.
As the door is moved to a closed position, the strike surace 66 of the latch will come into engagement with the inclined surface 67 o the keeper. This will cam the latch over the keeper to drop into the position shown by solid lines in Figure 12 with a recassed portion of the latch on opposite sides of the keeper.
1 @33 The re].ease member 59 is p.ivoted between the side plates of the housing 63 on a pivot pin 71, like the release members 30 and 54, is provided to release the latch from above the latch housing 63 as in the forms of antl-pilferage devices illustrated in Figures 1 througll 9.
It may be seen from the foregoing that the anti-pilferage device of the present invention may readily be adapted to various types of box car and trailer doors and is enclosed to prevent opening of the latch by hand except by operation of the release membex therefor, which is at ~uch an elevation and is spaced inwardly of its housing 50 that it cannot ordi~arily be reached by hand or by a bar or pole or other tool~
While the latch and keeper structure may be of various forms, it should be understood that an important part of the invention in addition to placing the anti-pilferage device at an elevation that it is inaccessible to pilferers and is enclosed so even poles or tools cannot release the release member due to the enclosing of all parts of the latch and keeper, and that the anti-pilferage device can thus only be operated to release the latch from above at an elevation that can only be reached from a loading dock.
In khe present disclosure the anti-pilferage device is located at least seven feet above the floor or bottom of the box car door and cooperates with the conventional. locks disposed adjacent the bottom of the door. It prevents opening of the door even though the bottom latches be in release positions.
Tabs 73 and 74 have registering aper~ured portions for a conventional seal, are shown in Figures 10 and 11 as 31~
extending outwardly of the outer side of the latch and keeper housings.
Claims (9)
1. An anti-pilferage device for freight car doors and the like in which the freight car is of the box car type and has at least one door opening defined by parallel door posts extending to the height of the door opening, a keeper and latch cooperating with the door and door post to prevent pilferage of the car by opening the door, said keeper and latch being at an elevation only reachable from a loading platform, separate housing means respectively enclosing said keeper and said latch and protecting said keeper and latch from tampering to release the latch from the keeper, said latch being gravity actuated and eccentrically pivoted to its respective housing means and having an advance strike surface engaging said keeper upon closing of the door and a latching surface moving to latching engagement with said keeper by gravity when the door is closed, and a release member pivoted to said housing and having releasable engagement with said latch and locking said latch in a release position in one position of said release member and moved to a locked position in another position of said release member to hold said latch in a locked position, said release member being accessible from the top of said housing and operable by the hand when the door is closed to cam said latch into a release position relative to said keeper.
2. An anti-pilferage device for freight car door assemblies and the like including two elements one of which is movable relative to the other, a keeper on one of said elements, a latch on the other of said elements and engageable with said keeper to retain the door closed, a housing for said latch including two spaced plates one being mounted on the door assembly and extending along the latch for a portion of the length thereof and along the top of said latch, and the other spaced laterally of the one plate, closure means closing the bottom portion of said latch housing the two plates being so constructed as to prevent access of said latch except from the advance end thereof, said latch having an advance strike surface engageable with said keeper by gravity to effect opening of the latch upon movement of one element toward the other and having a latch surface engageable with said keeper by gravity to hold said elements from movement relative to each other, and a release member engageable with said latch and operable to cam said latch to a release position and accessible only from the top of said plates, to prevent manual release of said latch from the ground.
3. The anti-pilferage device of claim 2 includ-ing a pivot for said latch mounted on said plates and extending therebetween and spaced a substantial distance from said strike surface to accommodate said latch to close by gravity as cammed upwardly upon engagement with said keeper, and in which the release member is pivoted between said plates and has a counterweighted upper end portion extending thereabove, biasing said release member out of releasing engagement with the latch and operable to engage and cam the latch to an open position upon manual pressure thereon in a direction away from the keeper.
4. The anti-pilferage device of claim 3 in which the axis of pivotal movement of the release member is above and rearwardly of the pivot for said latch member, and said release member has an inner camming surface having camming engagement with said latch to effect disengagement of said latch from said keeper.
5. The anti-pilferage device of claim 2 in which said keeper has guard portions extending across the bottom thereof along opposite sides thereof and across the end and over the top thereof to guard said latch from access by the hand, and has a keeper surface engageable with the latch portion of said latch and adjacent the end of the door element to which it is secured, and wherein the latch and keeper are positioned adjacent the top of the door element out of ready access except to a person on a loading dock and said latch is only accessible for release upon pressure on said counterweighted portion in a direction away from said keeper.
6. The anti-pilferage device of claim 5 including a strike on the side of said latch facing said keeper and wherein the keeper extends parallel to the door opening and cams said strike and latch surface to lockingly engage said keeper upon movement of one door element toward the other.
7. The anti-pilferage device of claim 6 wherein the strike and latch extend at right angles to the body of said latch and said keeper extends parallel to the door opening to which it is attached, and release of said latch may only be had by pressure on said counterweight in a direction away from said keeper.
8. The anti pilferage device of claim 1 in which the latch has a rear inclined top surface inclined down-wardly from the top thereof rearwardly of the pivot thereof and terminating into at least one step engageable at its rear end by said release member to effect camming of said latch out of latching engagement with said keeper.
9. The anti-pilferage device of claim 7 wherein said release member has a rear inclined top surface inwardly of the margins of the outermost of said plates and is counterweighted to bias said member out of engage-ment with the step on said latch member.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29859281A | 1981-09-02 | 1981-09-02 | |
| US298,592 | 1981-09-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1183183A true CA1183183A (en) | 1985-02-26 |
Family
ID=23151184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000409218A Expired CA1183183A (en) | 1981-09-02 | 1982-08-11 | Anti-pilferage device for freight cars |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1183183A (en) |
-
1982
- 1982-08-11 CA CA000409218A patent/CA1183183A/en not_active Expired
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| MKEC | Expiry (correction) | ||
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