US1085322A - Valve-grinder. - Google Patents

Description

A. BTGOMBS.

VALVE GRINDER.

APPLICATION FILED JAN.16, 191M Patented Jan. 27, 19M

'second, to provide,

UNITED STATES PA ENT OFFICE.

ALBURT B. COMBS, OF PORTLAND, OREGON, ASSIGNOR OF FIFTY-FIVE-ONE HUNDREDTHS TO H. L. KEATS, OF PORTLAND, OREGON.

VALVE-GRINDER.

To all whom it may concern Be it known that I, ALBURT B. Comes, a

citizen of the United States, residing in the city of Portland, county of Multnomah, and State of Oregon, have-invented certain new and useful Improvements in Valve-Grinders,

to develop a rapid rotary oscillating move ment which can be applied and made use of for grinding, drilling, polishing, agitating, or for any other purpose where a rotary movement back and forth is desired.

The principal objects of my invention are: first, to provide a power driven mechanism in which a reciprocating movement is utilized to develop a rapid rotary oscillating movement, and by this expression I mean a rotary movement back and forth for any part of a complete rotation, or for more than a complete rotation, and return; as one general embodiment of the invention, mechanisms of the character referred to in which the actuating or motive power is a fluid under pressure; third, to provide improvements in the construction and arrangement of parts whereby the operation of the actuated mechanism is made more perfect. 1

Other objects of the invention will appear as one embodiment thereof is illustrated and described.

I am aware thatthe invention can be embodied and made use of in a variety of different mechanisms, and that air under pressure, steam, gas or other fluids can be successfully used to operate same, and I do not therefore, limit the'invention to the particular embodiment which I have shown in the drawings for the purpose of illustrating and more particularly describing the invention.

In the accompanying drawings I have {shown-the invention embodied in a device particularly adapted for grinding valve seats, and in which an actuated member is placed upon a puppet valve, for example, shown in dotteddines, for the purpose of turning said valve member back and forth upon its seat and grinding the meeting surfaces until a perfect contact or seat is had.

I will now describe thisembodiment of Specification of Letters Patent. Application filed January 16, 1911.

Patented Jan. 27, 1914. Serial No. 602,960.

the invention as illustrated in the drawings, in which,-

Figure l is a side elevation of one em bodiment of the invention, partly in vertical section; Fig. 2 is a similar viewfrom another point of View andwith parts broken away to reduce the size of the finger; and Fig. 3 is a top plan view of Fig. 2.

Referring now to the drawings, 1 designates a casing having therein a longitudinally extending cylinder 2, a valve chamber 3 with exhaust port 3, and a guideway 4. Within the cylinder 2 works a piston 5, upon a piston rod 6. The piston rod 6 is hollow, and the piston 5 is provided with a central opening registering with'the rod, whereby said piston and rod work over a rotatable spiral member 7, suitably mounted, and carrying at its lower end a receiving or holding chuck, or member, as 8. Said spiral member 7 is provided with a spiral groove,

as indicated, which in the present showing represents a half turn or less. It is to be understood that such portion of a complete turn may be used as is most satisfactory for the work to be done. It has been found that a quarter turn is well adapted to valve grinding of the character referred to. In the opening through the center of the piston 5, and at the opposite sides are two small, inwardly projecting lugs or members, indicated in dotted lines, which fit within the spiral groove of the member 7, and impart thereto a rotary oscillating movement as said piston reciprocates within said cylinder 2. Opening into opposite ends of the cylinder two ports, as 9 and 10, adapted to be opened and closed by means of a long valve member, as 11, made hollow for the purpose of providing an exhaust passage from the upper end of the cylinder. Said valve member 11 is reduced in its diameter for the greater part of its length in order to provide space therearound for the admission of a fluid under pressure, as at 12. The ends of said valve member 11 are constructed so as to cover and close, alternately the entrance ports 9 and 10 as said valve thereto, as by a rivet or ,pin 14, said rod bemg provided at its upper end with actuab.

ing mechanism comprising a fixed collar, as 15, a shifting collar or sleeve, as 16, and a nut 17.

18 designates a small, spring actuated, friction device for preventing said valve member from moving too freely or dropping down at thewrong time.

19 designates a handle stem secured to the casingl. Mounted thereto, just above the casing 1, is a rock shaft, as 20, with a crank arm 21, adapted to be actuated by a spring and rod mechanism, as 22. At the opposite end of said rock shaft 20, is another crank arm 23, standing at substantially right angles to the arm 21, and the end of which is connected through a link 24 to the shift collar or sleeve 16 upon the valve rod 13. This mechanism operates to give a quick and complete stroke to the valve 11 at the end of each stroke of the piston head, whereby to fully open and close, alternately, the entrance ports into the piston cylinder.

25 designates a combination valve actuating member and guide rod, connected at its upper endto the upper end of the piston rod 6, and at its lower end working in the guideway 4, in the casing 1. Said member or rod is cut away at one side, as indicat vide camshoulders 26 and 27, engage the crank arm 24, as sai: 6 and member move up and dow; ring the operation of the machine, and operate to shift the valve 3 for the purpose of admit ting the actuating fluid alternately through the entrance ports 9 and 10.

The operation of the device here shown for purposes of illustration may be briefly described as follows: The device 13 connected a 12 with a source of air under pressure, said air passes around the valve member 11, and through the upper entrance port 9 into the cylinder 2, above the piston head, forcing the latter downwardly. As the piston hea moves downwardly, a rotary movement is imparted to the spiral member 7. The valve 7 actuating member 25 also moves downwardly with the piston head until the shoulder 26 thereof engages the crank arm 23 and moves it. downwardly. As the crank arm 23 moves downwardly it moves the shift sleeve 16 until itengages the fixed collar 15. By this time the crank arm 23 is horizontaland the short crank arm 21 is in a vertical position, or on center. The continued movement carries said short arm 21 beyond center and the spring 22 comes into operation and gives a quick continued movement through the crank arms and the valve rod 13 to the valve member 11. This final movement of the valve member 11 cuts oil the port 9 and brings the port 10 into communication with the space around the valve member 11, or the source of the air under pressure which operates to move the piston upwardly again, the air above the piston head escaping through the port 9 and down through the hollow valve. member 11 and exhaust port 3, As the piston head and rod, together with the valve actuating rod 25 move upwardly, the shoulder 27 on said actuating rod engages the under side of the crank arm 23 and operates to raise the shift sleeve 16 until it en ages the nut 17. By this time the short cran arm is again on center and the continued movement carries-it past center in the other direction, and the spring 22 again operates to quicken the upward movement of the valve member llfiopening the port 10 and bringing port '9 into communication with the source of air under pressure. This rock arm 20 with its crank arms 21 and 23, actuated by the spring 22, and with the shift sleeve 16 with its lost motion, furnishes a very novel and successful mechanism for admitting and cutting ofl the air to and from the opposite ends of the cylinder, and the operation is perfect. The rapid reciprocating movement of the piston rod and head within the cylinder, over the spirally grooved member 7, imparts to the latter a rotary oscillating movement which becomes particularly useful in grinding valve seats, or in accomplishing any other work requiring such a movement.

Another feature of no small importance in grinding valve seats is the fact that the rapid reciprocating movement of the piston rod and head, gives just the right amount of vibration to the entire machine and to the valve receiving the rotar oscillating movement, to permit the grin ing mixture, such, for example, as oil and emery, to keep the seat lubricated and supplied with the mixture.

I am notaware that any device has yet been produced in which a ower actuated reciprocating member is utilized to develop in a companion member a rotary oscillating movement, and while I have shown and described one practical embodiment of the invention, I do not intend to limit the invention to this embodiment, for I am aware that other mechanisms can be produced which will accomplish the same result without departing from the real spirit of my invention.

I claim:

1. A valve grinder of the character referred to comprising in combination 2. casing having therein a cylinder and a valve chamber with communicating ports therebetween, a piston in said cylinder, a valve member movably mounted in said valve chamber to control said ports, a rotar oscil; lat-ing operating member having riving connections with said piston, and means for causing an accelerated movement of said valve member in opposite directions, said means being set in operation by the move ment of said piston.

2. A valve grinder of the character referred to comprising in. combination a casing having therein a cylinder 'and a valve chamber with communicating ports therebetwecn, a. piston in said cylinder, a valve member movably mount d in said valve chamber to control said P010, a rotary oscillating operating member mounted in said cylinder and having driving connections with said piston, and a spring actuated mechanism for accolt-rating the mo ement of said valve mem ber.

A valve grinder of the character re ferred to comprising in combination a casing having, therein a cylinder and a valve chamber with communicating ports therebetivecn, a reciprocating piston in said cylinder, a rotary oscillatmg operating member operativcly connected with said piston, a reciprocating valve member in said valve chamber for controlling said communicating ports, and operating connections between said piston and said valve member for re ciprocating the latter bodily in opposite directions.

-11. In a valve grinder of the character rel i f; I l

ferred to, in combination, a casing provided with a cylinder and avalve chamber extending longitudinally thereof with communicating ports thercbetween at their ends, apiston in said cylinder, a rotary oscillating operating member adapted to be rotated alternately in opposite directions and having a telescopic driving connection with said pis ton, a. valve member in said valve chamber adapted to be moved bodily therein in opposite directions for controlling the ports at the opposite ends of said valve chamber, means for connecting said valve chamber with a source of fluid under pressure, and operating connections from said piston to said valve member with a springactuated element therebetween for causing an accelerated movement of said valve member with each movement of the piston, substantially as described.

ALBURT B. COMES. Witnesses E. D. \Voonnonv, \V. A. BURKE.

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