US1427913A

US1427913A - Valve-grinding device

Info

Publication number: US1427913A
Application number: US477318A
Authority: US
Inventors: Ruiz Charles
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-06-13
Filing date: 1921-06-13
Publication date: 1922-09-05
Anticipated expiration: 1939-09-05

Description

c. Rulzi- VALVE GRINDING DEVICE.

APPLICATION FILED JUNE 13. 192].

1 327 9 1 3' Patented Sept. 5, 1922..

Patented Sept. 5, 1922.

-' air VALVE-GRINDING DEVICE.

Application filed June 13, 1921.

To all whom it may concern Be it known that I, CHARLES RUIZ, a subject of the King of Spain, and a resident of Belleville, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Valve-Grinding Devices, of which the following is a full, clear, concise, and exact description, refer ence being had to the accompanying drawings, forming a part of this specification.

This invention relates to valve grinding tools of the oscillating progressive type, designed to be manually operated by imparting an oscillating movement to the valve being ground and the arcs of rotation being of different circular length in each reversing stroke so as to impart to the valve a rotating as well as an oscillating motion.

To this end, the invention consists of a novel construction and arrangement of parts hereafter described in detail and pointed out in the appended claims, reference being bad to the accompanying drawings in which:

Fig. 1is a front view of the tool with half of the case removed.

Fig. 2is a vertical cross sectional view through line CD.

Fig. 3-is a fragmentary cross sectional view through the line AB.

Fig. 4-is a view of the sleeve.

Similar characters of reference refer to similar parts throughout the several views.

As illustrated in Figs. 1 and 2, the valve grinder comprises a special body integrally cast with a handle, and vertically split in two halves for the purpose of assembling the enclosed parts. Said casing is designated by numerals l and 2. v

Numeral 3 indicates the shaft on which is is mounted a suitable tool 4 to fit the valve to be ground. In this particular design the tool is held by means of a cotter pin 18.

Sleeve 5 is mounted on shaft 3 and is free to rotate on it. Two bevel gears 6 and 7 are Numeral 12 indicates a mutilated bevel gear,

said gear being mounted on shaft13 and Serial No. 477,318.

forming an integral part of it. Crank 14 and crank handle 15 are used as means for operating the tool.

In this particular design, the case is made in two halves, held together by means of rivets indicated by numeral 16 and the body of the tool is made spherical and integrally cast with holder 17. r

In operation, upon turning crank handle 15 mutilated gear 12 is made to rotate with it and thus the teeth in said gear alternatively engage with upper and lower bevel gears 6 and 7 which as it is apparent will in turn oscillate shaft 3 which is driven by means of pin 8.

The advancing is obtained as follows: In operation the valve being ground will create friction on the shaftand when the teeth in gear 12 enter into engagement with gear 6 will move pin 8 to position shown in dotted lines in Fig. 3, the angular motion of said pin in the hole being equal to one or more teeth in gears 6 and '7. Then the last tooth in gear 12 disengages gear 6 the pressure on spring 10 is released and said spring will bring sleeve backto'original position in re lation to pin 8 and shaft? When gear 12 engages with gear *7 the shaft is driven by means of pin 8, but spring 10 does not operate and of course, the shaft is driven forward an amount equal to the number of teeth in mutilated gear 12 while onthe engagement with gear 6, a motion equal to one or more teeth was lost due to clearance in the hole 9 and the action of spring 10.

It will be noticed from the foregoing that in order to advance the position of the tool bit in each oscillation, a pressure greater than the spring must be applied on the shaft, although the shaft will oscillate under any condition.

Having thus described my invention what I claim as new is as follows:

In a valve grinder of the oscillating progressive type, the combination of a case, a driven shaft journaled therein and having means for engaging a valve to be ground, and a laterally projecting pin, a sleeve loose on the shaft having a hole larger than and receiving the pin and two bevel gears of the same size, a spring fast to the sleeve and bearing against one side of the pin, a mu tilated bevel gear mounted in the case to my hand in presence of two subscribing Witmesh with said first mentioned gears 1aternesses. ally, and a hand crank for operating said mutilated gear, whereby the shaft is osci1- 5 lated to a greater extent in one direction Witnesses:

than in the other. MORRIS RESMIOK,

In testimony whereof I have hereunto set J. S. MUNIES.

CHAS. RUIZ.