US1292673A

US1292673A - Gas-engine lock and key.

Info

Publication number: US1292673A
Authority: US
Inventors: Amasa A Armstrong
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-11-21
Filing date: 1917-11-21
Publication date: 1919-01-28
Anticipated expiration: 1936-01-28

Description

A. A. ARMSTRONG.

GAS ENGINE LOCK AND KEY. APPLICATION FILED Nov. 21. tan.

1 ,292,673. Patented Jan. 28, 1919.

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A. A. ARMSTRONG. (;As ENGINE LOCK AND KEY.

I I APPLICATION FILED NOV. 21, 1917' a 1,292,673. Patented Jan. 28, 1919.

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AMASA A. ARMSTRONG, 0F EDMORE, MICHIGAN.

GAS-ENGINE LOGK AND KEY.

Specification of Letters Patent.

Patented Jan. 28, 1919.

Applicatiomfiled,Novcmber 21, 1917. Serial No. 203,210.

To all wimmz't may concern:

Be it knownthat LAMASA A. ARMs'rRoNe, a citizen of the Unitedv States, residing at Edmore, in the county of Montcalm and State of Michigan, have invented certain new and useful Improvements in Gas-Engine. Locks and Keys; and I do hereby declare the following to be a full, clear, and

- exact description of the invention, such as will enable others skilled in the art to which it appentains to make and use the'same.

This invention relates to improvements in engine locks and has for one of its objects the provision of a device of this character whereby the exhaust and intake valves of the engine may beheld and locked in an unseat ed position, preventing compression in the cylinders thereby preventing starting of the engine.

Another object of this invention is the provision of means adapted to be moved into the path of the valves for preventing them from returning to a, seated position after moving to an unseated position, thus obviating compression, in the cylinders and preventing runnmg of the engine.

A further object of this invention is the provision of combination means for locking and unlocking the means into and out of the paths of the valves.

A still further object of this invention is theprovision of an engine-lock of the above stated character, which shall be simple, durable and eflicient, andwhiehmay be manufactured and sold at a comparatively low cost.

With these and other objects in view as will become more apparent as thedescription proceeds, the invention consists in certain novelfeatures of construction, combination and arrangement of parts as will be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be-had tothe following. description and accompany ng drawings, n which Figure 1 is a fragmentary vertical sectional view. of an eng ne illustrating the intake and exhaust valves having my invention associated therewith,

,. Fig. 2 is a fragmentary sectional view illustrating the means of holding the valves in an unseated position,

Fig. 3 is a similar view illustrating the means of securing the dogs to a shaft,

Fig. 4 is a sectional view taken on the line 4-4 of Fig. 2,

Fig. 5 is a detail view partly in section of a tension means for engagement with the shaft,

Fig. 6 is a vertical view partly in section illustrating means of securing the combination lock to the engine,

Fig. 7 is a similar view illustrating the specific construction of the lock,

Fig. 8 is a similar view taken atright angles to Fig. 7,

Fig. 9 is a transverse sectional view of the lock on line 99 of Fig. 6,

Fig. 10 is a perspective view of the lockin sleeve,

ig. 11 is a plan view and Fig. 12 is a perspective view of the body of the lock.

Referring in detail to the drawings, the numeral 1 indicates as an entirety an internal combustion engine having the usual sliding or puppet valves 2 for controlling the exhaust and intake ports of the engine. These valves 2 are urged into a seated po sition by means of springs 3 that are interposed between the wall or flange of the engine and collars 4 secured on the lower ends of the valve stems. The collars 4 and springs of the locking bolt,

3 are located in what is known as a valve' chamber 5 of the engine and which is usually closed by a removable plate. The foregoing description relates to a well known construction of engine and to which my invention is applied.

The downwardly depending hangers Gare secured to the engine 1 within the valve chamber 5 and have journaled therein a horizontally disposed shaft 7. The shaft 7 has journaled thereon dogs 8 which are spring actuated by springs 9 that normally urge the dogs into an engagement with the collars 4 upon the valve stems of'the valves 2 as illustrated in Figs. 2 and 3. Members 10 are secured to the shaft 7 and overlie the dogs 8 and have secured thereto the ends of the springs 9. The members 10 are seowed to the shaft 7 by means of fastening elements 11 and are adapted to engage notches 12 formed upon the dogs 8 for disengaging the dogs from the collars 4 upon the valve stems of the valves 2 when the shaft7 is rotated in the hangers 6. Ahanger 13 is secured to the engine 1 within the valve housing 5 and has secured to its lowermost end a leaf spring 14 which rides upon squared faces 15 formed upon the shaft 7. The spring 14 is adapted to hold the shaft against accidental rotation within the hangers 6. The shaft 7 is rotated or actuated by a combination lock 16, which will be hereinafter more fully described. When it is desired to lock the valves 2 in an unseated position, the combination lock 16 is actuated to rotate the shaft 7 and by rotating the shaft 7, the dogs 8 are so positioned that the springs 9 will force them into the paths of the valves 2 and as the valves are unseated in the ordinary manner, the dogs 8 engage under the collars 4 and prevent said valves from seating, thus preventing compression within the cylinders of the en gine. When the compression within the cylinders of the engine is reduced or obviated, it is impossible to start or make the engine run, whereby means is provided for locking the engine against thefts.

The combination lock 16 consists of a cylindrical body 17 which is externally threaded as illustrated at 18 and disposed through an opening in the front wall of the engine 1 and in alinement with the forward end of the shaft 7. A collar 19 is threaded on the body 17 prior to inserting the same through the opening in the front wall of the engine and a lock nut 20 is threaded on the body after the body has been inserted through the opening in the front wall of the engine so as to cooperate with the collar 19 and securely holding the body within the opening of the front wall. The collar 19 has formed thereon a flange 21 which projects over the body 17 in spaced relation thereto as clearly illustrated in Fig. 8.

A key or operating member 22 is slidably mounted within the body 17 and consists of an inner section 23 and an outer section 24. The inner end of the inner section 23 is provided with a rectangular bore 25 to receive the rectangular end 26 ,of the shaft 7 and is normally in engagement therewith. The outer end of the inner section 23 is bifurcated to form a pair of relatively spaced arms 27 which slidably receive a pair of relatively spaced arms 28 formed upon the inner end of the outer section 24. The outer end of the outer section 24 has formed thereon a head ,or finger grip 29 for sliding and turning the key or actuating member 22 in the body 17. The arms 27 are connected by a wall 30 and a bolt 31 which is engaged by a .lock bolt 32 carried by the arms 28 of the outer section 24 for limiting the sliding movement of the

sections

23 and 24 in relation to each other. A coil spring 33 is positioned within the outer section 24 and bears against the wall 30 for the purpose of moving the section 23 into engagement with the shaft 7 and moving the section 24 outwardly of the body 17 and which movement is limited by the lock bolt 32 engaging the pin 31. p

The body 17 is provided with a transverse slot 34 which receives one end of the lock bolt 32. The slot 34 is provided with longitudinally extending branches 35 at each end thereof and an intermediate branch 36. A sleeve 37 is journaled upon the body 17 and which body is provided with a collar 38 upon its outer end that rotatably receives the sleeve and prevents the sleeve from moving ofi the body in the direction of the head or hand grip 29 upon the key 32. The inner end of the sleeve 37 is provided with a pair of oppositely disposed extensions 38 between which is formed a space 39 to receive a stop 40 formed upon the inner end of the body 17 for limiting the rotation ,of the sleeve upon said body. The inner end of the sleeve 37 is provided with oppositely disposed bayonet slots 41 which are formed partially by the extensions 38 and are adapted to cooperate with the branches 35 formed on the slot 34 in the body 17 and locking the key 22 against sliding movement in the body by receivino' andholdino' the upper end of the lock bolt 32. An intermediate slot 42 is formed in the inner end of the sleeve 37 between the bayonet slots 41 and is adapted to receive the upper end of the lock bolt 32.

Under normal conditions, the lock bolt 32 is normally disposed within the bayonet slots 41 and designated by the character A in Fig. 10, the sleeve 37 is turned to the right causing the said bayonet slot to free the locking pin 32. The key 22 is then pushed inwardly causing the locking pin 32 to disengage from one of the notches 35 into the transverse slot 34. The key is then turned to the left causing the pin to move over and aline with the other branch or notch 35 and by releasing the key, the spring 33 forces the same outwardly causing the locking be 32 to pass into the said branch 35. l/Vhen the key 22 is moved to the left in the manner heretofore described, the shaft 7 is moved in a corresponding direction causing the dogs 8 to be moved out of the paths of the valves 2 permitting said valves to work freely to perform their function. When it is desired to lock the engine, the sleeve 37 is-turned to the left causing the bayonet slots to free the locking pin and the key is pushed inwardly and turned t0.the right into the other branch 35 and the sleeve is then turned to the right causing the bayonet slot A to lock said pin Within said branch 35. As the key turns to the right, the dogs 8 are moved in the path of valves 2, and as the valves more upwardly or into an unseated position and the springs 9 force the dogs under the collars and hold said valves in an unseated position.

WVhile I have shown and described the preferred embodiment of my invention, it will be understood that minor changes in construction, combination and arrangement of parts may be made Without departing from the spirit and scope of the invention as claimed.

Having thus described my invention, what I claim is.

1. The combination with an engine including valves of a shaft journaled to the engine, means carried by the shaft and adapted to be moved into engagement with the valves, and means for rotating and locking the shaft against movement.

2. The combination with an engine including reciprocating valves, a shaft journaled to the engine, spring actuated dogs carried by said shaft, means for rotating the shaft to cause the dogs to engage the valves and hold them in an unseated position, and means locking the shaft against rotation.

3. The combination with an engine having valves, a shaft journaled to the engine, dogs journaled on said shaft, members secured to the shaft and overlying the dogs, springs engaging the dogs and wound about the shaft and secured to said members, and means for rotating the shaft in either direction to engage and disengage the dogs from the valves.

4. The combination with an engine having valves, a shaft journaled in the engine, members carried by said shaft, rectangular faces formed on said shaft, a member secured to the engine, a leaf spring secured to said member and adapted to engage the squared faces of the shaft and means for turning the shaft to move the members into and out of engagement with the valves.

5. The combination with an engine having valves, a shaft journaled in the engine, means carried by the shaft for engagement with the valves, and a combination lock secured to the engine and connected with the shaft for locking and for unlocking the shaft against rotation.

6. The combination with an engine hav- Oopiee of this patent may be obtained for a shaft journaled in the engine, means carried by the shaft for engagement with the valves, a body secured to the engine and a key lidable in said body and connected to the shaft for operating said shaft.

7 The combination with an engine including valves, of a shaft journaled to the engine, means carried by the shaft for engagement with the valves, a body secured to the engine, a spring actuated pin slidable in said body and connected with the shaft for rotating the same, and means locking said pin against movement.

8. The combination with an engine including valves, a shaft journaled to the engine, means carried by the shaft for engagement with the valves, a body secured to the engine, a key slidable in said body and connected to the shaft and consisting of inner an outer sections, means slidably connecting the sections, a spring interposed within the outer section and bearing against the inner section, and means locking the key against movement within the body.

9. The combination with an engine including valves, a shaft journaled to the engine, means carried by the shaft and adapted to engage the valves, a body secured to the engine, a key slidably mounted in the body and connected to said shaft, said body having a transverse slot and communicating branches, a lock bolt carried 'by the key and extending through the slot, and a sleeve journaled on the body for engaging the lock bolt to hold the key against sliding and rotating movement.

10. The combination with an engine having valves, of a shaft journaled to the engine, means carried by the shaft for engagement With the valves, a body secured to the engine, a key slidably and rotatably mounted in said body and connected to the shaft, said body having a transverse notch and communicating branches, a lock bolt carried by the key and extending through the slot, and a sleeve journaled on the body and having bayonet slots to receive the lock bolt to hold the key against sliding and rotating movement.

In testimony whereof I affix my signature in presence of two witnesses.

AMASA A. ARMSTRONG.

Witnesses:

V. C. Conn,

JOSEPH SNELL.

ing valves,

five cents each, by addressing the "Commissioner of Patentl,

Washington, D. 0."