USRE16942E

USRE16942E - Trailer lock

Info

Publication number: USRE16942E
Authority: US
Publication date: 1928-04-24
Also published as: US1566617A

Description

A ia-i124. 192s.v I Re. 16,942

. F. M. REID TRAILER LOCK Original Filed Feb.2l, 1925 2 Sheets-Sheet 1 Inventor Th'wderzck Md 7002111 Jizez'd April 24. 1928.

F. M. REID TRAILER LOCK Original Filed Feb.2l. 1925 2 Sheets-Sheet 2 Invenion I fr'edrick ,MaZcoZm Fez fliiorne g Reissued Apr. 24, 1928.

UNITED STATES 7 Re. 16,942 PATENT OFFICE.

FREDERICK MALCOLM REID, OF DETROIT, MICHIGAN, 'ASSIGNOIB. TO FRUEHAUT TRAILER COMPANY, OF DETROIT, MICHIGAN, A CORPORATION 01 MICHIGAN.

TRAILER. Locx.

Original No. 1,586,617, dated December 22, 1925, Serial No. 10,747, filed February 21 1925. Application for reissue filed January 29, 1827. Serial No. 164,593.

This invention relates to center locking devices for trailers. invention to provide a simple, strong, sturdy lock of an automatic character, in which the automatic feature may be simply discontinued by throwing a lever from one side to the other. This will be more fully explained hereinafter.

In the drawings:

Fig. 1 is a framentary side elevation of a trailer equipped with the improved center lock.

Fi 2 is a fragmentary front elevation showing the look.

Fig. 3 is a vertical section taken on the line 33 of Fig. 2.

Fig. 4 is a plan view showing the table member in the gear frame.

. The trailer is provided with a drawhead a, which is provided with an integral lock table I) and is provided at the center with a keeper socket c. A spring-pressed vertically guided bolt (1 is slidable in the bolt housing a, which is riveted to the chassis frame of the trailer. The keeper socket and the lock table, which are part of the drawhead, are riveted to the frame of the truck, or what we sometime call the gear frame.

The coil spring f engages against the shoulder on the bolt head and within the bolt socket and tends to project the bolt. On the top of the bolt housing is located a lever h which has an eccentric fulcrum 9 se-. cured to the upper end of the bolt by means of the pivot pin The pivot pin is eccentrically located on the circular fulcrum or roll of the lever at substantially a 90-degree point with respect to the attachmentof the lever to this roll or fulcrum. MW obvi. ously by simply throwing the lever over from the position-shown in the full lines to the position shown in the dotted lines in Fig. 2, the lock is taken from the position of action to the position of inaction. It will be seen that in the position shown in thefull lines the lever, together with the roll fulcrum, can rise above the bolt bracket when the lower end of the bolt slides along the table.

This action facilitates .the locking of the gear frame to the trailer, in that it is not necessary to align the bolt and the keeper socket before locking, which would be quite a diflicult task, especially with a heavy, or

loaded trailer. The gear frame is positioned 1t is the object of the so that the bolt rests at any point on the table I), whereupon the gear frame is turned 011 its vertical pivot, andthis may be done by the use of a tractor attached to the drawbar where the trailer is particularly heavy, or loaded, and when the keeper socket comes under the bolt, the same will snap into place. When the gear frame reaches center position with respect to the chassis frame, the lock will automatically shoot into the keeper socket. This makes a very strong lock which can be easil manufactured and applied to the chassis rame. The lock itself 15 a separate unit which may be manufactured as a unit and riveted as a unit to the chassis frame. The keeper socket simply is an integral part of the drawhead as is also the table along which the lock slides.

' frame for the wheels, which has a fifth w eel While connection with the main frame.

the member with the keeper socket is shown on the gear frame and the movable latch member on the main frame, it is within the invention to reverse the position of these parts so that the keeper socket member is on the main frame and the latch member on the gear frame.

What I claim is:

1. A center lock for vehicles, having in combination an upper member, a lower member, with two members arranged to have relative movement with respect to each other, a bolt guide housing on the one member, a table provided with a center keeper socket on the other member, a sliding bolt guided in the bolt guide and tending to project into the keeper socket when lined up therewith, and means connected with the outer end of the slidin bolt and operating in direct connection with the bolt guide housing to either release the bolt for automatic projection into the keeper socket or else to set the bolt against projection into the keeper socket.

2. A center lock for vehicles, having in combination an upper member, a lower member, the two members arranged to have relative movement with respect to each other, a bolt guide housing on the one member, a table provided with a center keeper socket on the other member, a sliding bolt guided in the bolt guide and tendingto project into the keeper socket when lined up therewith,

and a lever which can be thrown from one side to the other and which is connected at the outer end of the bolt and operates in direct connection with the bolt guide housing for throwing the bolt out of operation or releasing the bolt for automatic projection into the keeper socket.

3. A center lock for vehicles, having in combination an upper member, a lower member, the two members arranged to have relative movement with respect to each other, a bolt guide housing on the one member, a table provided with a center keeper socket on the other member, a sliding bolt guided in the bolt guide housing and tending to project into the keeper socket when lined up therewith, and a lever havin a roll-like fulcrum eccentrically connected wtih the outer end of the bolt and bearing against the guide housing so that by throwing the lever to the one side of center the bolt is held out of operation and turning it to the other side of center the bolt is released for automatic projection into the keeper socket.

4. A lock for trailers and gear frames, having in combination with a trailer and a gear frame, a lock guide bracket which can e secured to the trailer frame, a bolt guided vertically in said bracket, a spring for projecting the bolt downwardly, a table provided with a center keeper socket secured to the gear frame, and a lever having a rolllike fulcrum bearing on the top of the bolt guide bracket and having an eccentric pivot connection with the upper end of the bolt.

5. In a trailer having a main frame and a gear frame mounted to turn on a vertical pivot, a lock for locking the two frames together against relative movement, comprising a table mounted on one of the frames extending substantially from one side of the frame to the other so as to be at all times under the hereinafter mentioned latch, said table being provided with a keeper socket, a latch mounted on the other frame, said latch having a normal tendency to move toward the table and socket, whereby the two frames may be positioned relative to each other so that the latch rests upon the table and then the two frames moved relative to each other until the latch moves into the keeper socket.

6. In a trailer having a main frame and a gear frame mounted to turn on a vertical pivot, a lock for locking the two frames together against relative movement, comprising a relatively long table mounted on one relative to eachother so that the bolt rides along the table and moves into the keeper socket when the same comes into alignment with the bolt.

7. Ina trailer having a main frame and a gear frame mounted to turn on a vertical pivot, a lockfor locking the two frames together against relative movement, comprismg a table secured to the gear frame and projecting forward over the front of the frame to which it is secured so as to be at all times under the hereinafter mentioned bolt in the swinging of the gear frame, said table having a keeper socket, and a bolt mounted upon the main frame, said bolt having normal tendency to move downwardly toward the gear frame, whereby the two frames may be locked together by turning the gear frame on its vertical pivot with the bolt sliding on the table until the keeper socket comes in alignment therewith and the bolt moves into the keeper socket, and means for holding the bolt in raised position to prevent locking of the frames when relative movement between the frames is desired.

8. In a trailer having a main frame and a gear frame mounted to turn on a vertical pivot, a lock for locking the two. frames together against relative movement, comprising a relatively long table mounted on the gear frame having a substantially centrally disposed keeper socket, a bolt mounted on the main frame and arranged to ride over said table wherever said bolt extends forward of the gear frame, spring means for urging said bolt toward the table, means for holding the bolt against such movement caused by the spring, said holdin means being releasable to ermit the b0 t to move under the action 0 said spring, whereby the two frames maybe locked b turning the gear frame on its vertical pivot with the bolt riding on the table until the keeper socket aligns with the bolt and the bolt is spring-pressed into the keeper socket.

9. In a trailer having a main frame and a gear frame mounted to turn on a vertical pivot, a lock for locking the two frames together against relative movement, comprising a member which forms an essential part of'the gear frame, said member being in the form of a table, and 'a bolt mounted upon the main frame, said bolt having a normal tendency to move downwardly toward the table and arranged to ride over said table wherever said bolt extends forward of the gear frame whereby the'two frames may be locked together by turning the gear frame onits vertical ivot with the bolt sliding on the table unti the keeper socket comes in alignment with the bolt and the bolt moves into the keeper socket.

10. In a trailer having a main frame and a gear frame mounted to turn on a vertical pivot, a lock for locking the two frames together against relative movement, comprising downwardly toward the table and arranged 10 to ride on said table wherever said bolt extends forward of the gear frame whereby the two frames may be locked together by turning the gear frame on its vertical pivot with the bolt sliding on the table until the keeper socket comes in alignment with the bolt and the bolt moves into the keeper socket.

FREDERICK MALCOLM REID.