US453001A - Machine for refitting valves - Google Patents

Description

Patented May 26,1891.

C. P. HALL.

INVENTOR:

MACHINE FOR REFITTI NG VALVES.

(No Model.)

WITNESSES: @KQWW 1 39 UNITED STATES PATENT ()FFIGE.

CHARLES F. HALL, OF SKANEA'IELES, NEW YORK.

MACHINE FOR REFITTING VALVES.

SPECIFICATION forming part of Letters Patent No. 453,001, dated May 26,1891.

Application filed December 3, 1890- Serial No. 373,401- (No model.)

To aZZ [Oil U122 it may concern.-

Be it known that I, CHARLES F. HALL, of Skaneateles, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Machines forRefitting Valves, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to the class of valvefitting machines in which a rotary spindle is provided with a dog by which it holds the valve to be refitted and presses said valve between cutters mounted on a face-plate or head. r

Theobject of the invention is to provide a machine which shall afford greater range of adjustment to operate 011 valves and valveseats of different diameters, and shall also be simple in construction and convenient and efficient in its operation; and to that end the invention consists in the improved construction and combination of parts hereinafter described, and specifically set forth in the claims.

. In the annexed drawings, Figure 1 is a side elevation of a machine embodying my improvements. Fig. 2 is a vertical longitudinal section of that end of the machine on which is mounted the cutter-head. Fig. 3 is a vertical transverse section on line so 00, Fig. 1. Fig. 4 is a face view of the cutter-head. Fig. 5 is a detached longitudinal section of a mothfication of the dead-spindle of the machine, and Fig. 6 is a face view of the cutter as used for fitting fiat valve-seats.

Similar letters of reference indicate corresponding parts.

A represents the base of the machine. From one end of said base rises the pedestal P, which is rigid in its position and preferably formed integral with said base. The top of said pedestal is formed with a rigid horizontal sleeve a, in which is inserted movably longitudinally the dead-spindle d, which is secured adjustably in its position by means of a set-screw e, and preferably, also, by a jam-nut n 011 the rear end of said spindle, which portion is screw-threaded for that purpose.

To the exterior of the sleeve a are rigidly secured forwardly-extending arms I) b, to the extremities of which is rigidly attached the from the same by a spiral spring 3 back of the pin, as shown in Fig. 5 of the drawings, or said pin d may be otherwise adjustably sustained in the spindle cZas, for instance, by screw-threads on the pin working in corresponding serew-threads in the channel of the spindle. (Not necessary to be shown.)

h h h represent the cutters by which to trim and fit the valve, and for operating on a globevalve said cutters are formed conical and secured with their large ends to'the face of the cutter-head C.

' To adapt the machine to operate on valves of dilterent diameters, I attach the cutters adjustablyin relation to their distances from the center of the cutter-head C, and for this purpose I prefer to provide said cutter-head with a series of bolt-holes i t i for each cutter, said bolt-holes being arranged at various distances from the center of the cutter-head and adapted to receive through them the attaching-bolte of the cutter. The supplemental head C may also be provided with such bolt-holes as shown in Fig. 4 of the drawings, in which one of the cutters is indicated by dotted lines. For grinding or fitting a valve-seat the cutters h h are to be reversed so as to set them with their small ends against the cutter-head. In this latter position the cutters are also placed for operating on a flat valve-seat, such as is required for cheek-valves and others, and for which purpose I provide thelarge end face of the cutter with cutting-teeth, as shown in Fig. 6 of the drawings.

D represents the rotary or live spindle, which is journaled in a sleeve D on the top of the pedestal or post P, which is mounted movably on a guide g, secured to or formed on the base A, and one or more set-screwstt, passing through the foot of the pedestal and engaging the guide, holds the pedestal in its desired position. Said pedestal can thus be set a greater orless distance from the cutterhead 0, as may be required to bring the valve to be operated on in proper position against the cutters. The end of the live spindle D adjacent to the cutter-head is provided with a suitable dog f for engaging the valve-stem so as to compel the valve to rotate with the spindle.

For operating on spindle, wing, and check valves the cutters are secured to the main cutter-head O, the supplemental head C being in that case removed from the main head to allow the end of the valve to pass through the aperture 0 and become centered on the supplemental head, as shown in Figs. 1 and 2 of the drawings.

Fig. 1 also illustrates the method of operating' the machine. The dotted lines represent the valve and its stuffing-box. The valve proper being of a conical form is insertedbetween the correspondinglyshaped cutters h h h, which have been adjusted on the cuttor-head, so as to come in contact with the beveled sides of the valve disposed concentric with the cutter-h ead O. The dead-spindle d is pushed toward the end of the valvesteni and centered thereon, while the dog f engages the handle of the valve so as to cause the same to turn with the spindle D. By rotating this spindle and at the same time pushing it toward the cutter-head O the valve is rotated between the cutters and forced against the same with the requisite force to cause the cutters to dress and refit the face of the valve.

For operating on small valves the deadspindle d is pushed toward the main head 0 to seat the supplemental head 0' in the-aperture c, where it is retained by fastening the spindle d in the sleeve a. The cutters in this case are attached to said supplemental head.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A valve-fitting machine comprising a rotary spindle, a work-holding dog on the end of said spindle, a head facing said end of the spindle and secured stationary in its position, and cutters attached to said head adj ustably in relation to the center thereof, as set forth.

2 In combination with the rotary spindle and a work-holding dog attached to the end of said spindle, a head facing said end of the spindle and provided with a central aperture, cutters rigidly secured to said head, a deadspindle disposed axially concentric with the aforesaid aperture and movable longitudinally to and from the same, and fasteningdevices holding the latter spindle adj ustably in its position, as set forth.

3. In combination with the rotary spindle provided with a work-holding dog on its end, a main head facing said end of the spindle and formed with a central aperture, cutters secured to said head, a dead-spindle disposed axially concentric with the aforesaid aperture and movable longitudinally to and from the same, a supplemental head of the shape and size of the aperture in the main head and secured to the end of the said spindle adjacent to said main head,-and fasteningdevices holding said latter adj ustably in its position, substantially as described and shown.

4:. The combination, with the base A, of the pedestal P, formed integral with said base and having the sleeve a affixed to it, arms I) b, rigidly attached to and extending from said sleeve, the main head 0, secured to said arms remote from the sleeve and provided with the central aperture c,'the spindle d, sliding in said sleeve,the supplementalhead 0, attached to said spindle, the set-screw e for fastening the spindle, cutters attached to the main head, and the rotary spindleD, provided with the work-holding dog f, substantially as described and shown.

5. In a machine for fitting valves, the combination, with the cutter-head, of cutters of conical shape secured reversibly to the cutterhead and provided with teeth on their beveled sides and on their large end faces, substantially as described and shown.

In testimony whereof I have hereunto signed my name this 15th day of November, 1890.

CHARLES F- HALL. [L. s]

Witnesses:

M. F. DILLON, CALEB W. DOVE.

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