US500215A - Valve-seating tool - Google Patents

Description

(No Mom.) 2 sheetssheet 1.

F. H. RICHARDS.

VALVE SEATING TOOL. No. 500,215 Patented June 27, 189s.

(No ModeL) 2 Sheets-Sheet 2. F. H. RICHARDS. VALVE SEATING TOOL.

No. 500,215. Patented June Z7, 1893.

venin?? UNITED STATES PATENT OFFICE.

FRANCIS H. RICHARDS, OF HARTFORD, CONNECTICUT, ASSIGNOR TO WALTER VOOD, OF PHILADELPHIA, PENNSYLVANIA.

` VALVE-SEATING TOOL.

SPECIFICATION forming part of Letters Patent No. 500,215, dated J' une 27, 1893.

Application filed July l1, 1892. Serial No. 439,691. (No model.)

To all whom it may concern.- engaging upon and between the several rolls Be it known that I, FRANCIS H. RICHARDS, a of the rst set to drive these after the mancitizen of the United States, residing at Hartner of frictional bevel gearing; this arrangeford, in the county of Hartford and State of ment is primarily for the purpose of reducing 55 5 Connecticut, have invented certain new and to a minimum the friction of the face-rolls useful Improvements in Valve-Seating Tools, upon the face of the valve-seat disk 12 (Fig. of which the following is a specification. 3); and secondly, to reduce the diameter of This invention relates to tools for seating the track 10 to a size which will permit the valves by the process of rolling-in the seat- Withdrawal of this track through the oppc- 6o 1o rings into engagement with the valve-body; site side of the valve,it being understood the object being to provide effective apparathat this seating-tool will generally be used tus whereby that process may be carried out for seating valves of the so-called doubleby simultaneously rolling the face and angate glass. For the purpose of driving, and encrage-flange of the valve-seat blank. also for expanding, the expander-rolls, 7, 7 65 I5 In the drawings accompanying and formand 7" during the seating operation, I proing a part of this specification, Figure 1 is a vide the expander-pin, designated in a genplan view of a valve-seat tool embodying my eral Way by P. This pin is formed tapering, present improvements. Fig. 2 is aside eleas shown inFig. 4, so that its point 13 will vation of the same, as seen from below in enter between the expander-rolls when these 7o 2o Fig. l. Fig. 3 is a sectional elevation of the stand, as shown in Fig. 3, within the anchortool, illustrative also of the manner of using age-flange 3 of the seat-blank B. the same. Fig. 4 is a plan view of the roller- In practice, the two drivers S and P maybe head of the tool as seen from above in Figs. independently revolved and forced to their 2 and 3. Fig. 5 is a plan view of the rollerwork, but one preferable arrangement is to 75 z5 head as seen from below in Figs. 2 and 3. to extend the stem l5 of the expander-pin P Similar characters designate like parts in through the bore 16 of the face-roll driver S, all the figures. as best shown in Fig. 3, and to clamp said My improved valve-seating tool consists: driver S, by means of the clamp-screw 14 or iirst, in a roller-head furnished with rollers otherwise as may be preferred, with a mod- 8o 3o for acting u'pon the seat-blank disk and on erate degree of force upon the cylinder stem the anchorage-liange thereof; and second, ot' l5 of said pin P. By means of this construcdevices for simultaneously driving said rolltion and combination, the expander-pin P, ers. The roller-head consists of the body, or being revolved, also revolves the driver S; roll-carrier, F, constructed to receive the two also, when the expander-pinPis forced down- 8 5 35 sets of rolls, one set for rolling the face of ward between the expander-rolls during the the seat-blank and the other set for rolling seating operation, the friction of the driver the anchorage-flange of said blank. The S on the stem holds the driver down firmly face-rolls 4, 4 and 4" (usually three in numagainst the face-rolls, and thus holds these ber, as shown) are each held in place on the rolls against the disk-portion l2 of the seat- 9o 4o carrier by some suitable means, as for inblank B, in a manner which will be understance, the tubular studs 5 and the bolts 6. stood by comparison of the several igures of The other set of rolls, designated as the exdrawings. pander-rolls, 7, 7 and 7", are set in pockets, When employing the construction and aror recesses, 8, 8 and 8, formed in said carrangement of roll-drivers here described, the 95 45 rier, the rolls being held in place in said rediameter of the driver-track l0 relative to the cesses by a cap, 9, which may be formed intediameter of the face-rolls 4 should be in the gral with the roll-carrier; or, may be formed same proportion as the mean diameter of the separately as herein shown, and secured to the expander-pin P relative to the diameter of carrier by means of screws, 11. For driving `the expander-rolls, so that the most effective roo 5o these rolls, a driving-sleeve, S, is provided, work will be done with the least loss of power having at the end thereof a conical track, lO, by enforced slipping of the rolling surfaces.

The mode herein shown of attaching the several face-rollers to the roll-carrier F is one of great strength and etticiency. The rollers should be made of steel of high resistance to crushing force and Well tempered; the tube 5 should be driven firmly into the counter-bore made therefor in the roll-carrier, so that this tube will receive the shearing strain ofthe roll; the bolt should be screwed irmly in place and have the head large enough to furnish wearing surface for holding the roll from out Ward movement.

In Fig. 3, the character C designates onehalf of the body of an ordinary double-gate valve, in whose inner wall E is formed the openingDfor receiving the an chorage-tlange 3 of the seat-blank B.

Having thus described my invention, I claim- 1. In a valve-seating tool, the combination with a unitary roll-carrier adapted for carrying two sets of rolls, of two sets of rolls, one arranged to bear upon the face of a seatblank and the other to operate within said blank, and roll-drivers acting upon each of said rolls simultaneously, substantially as described.

2. In a valve-seating tool, the combination with a unitary rollcarrier furnished with rollers to bear upon the face of the seat-blank, of the expander-rolls carried in said carrier in position for operating on the inner side of the seat-blank, and the tapering expander-pin driving said expander-rolls, substantially as described.

3. In a valve-seating tool, the combination with the roll -carrier substantially as described, of the expander-rolls carried in said carrier, the conical face-rolls supported on said carrier, the expander-pin for driving the expander-rolls, and a conical track for driving the face-rolls, substantially as set forth.

4. In a valve-seating tool, the combination with a roller-head substantially as described furnished with two sets of rolls, of the pin P for driving one set of rolls, and the driver S for driving the other set of rolls and constructed to be driven from said pin through a frictional clamp, substantially as described.

5. In a valve-seating tool, the combination with the rollerhead F having the pockets 8, 8 and 8", of the expander rolls in said pockets, the conical rolls 4, 4. and 4", means substantially as described for supporting said conical rolls on the carrier, and two co-acting roll-drivers for simultaneously actuating the two sets of rolls, substantially as described.

6. In a valve-seating tool, the combination with a unitary roller-head constructed for receiving flange-expanding rolls and for carrying face-rolls, of the flange-rolls carried within said head, the conical face-rolls carried by the head adjacent to the flange-rolls, said rollers being, respectively, in the same radial position on the roller head, and a friction rolldriver for each said set of rolls, substantially as described.

7. A valve seating tool comprising a unitary roller-carrier furnished with one set of loose radially-arranged rollers, the axes of which are parallel to the axis of the carrier, and one set of radially-arranged rollers Whose axes are at an inclination to the axis of the carrier, and means to frictionally-drive each set of rollers independently or simultaneously, substantially as described.

8. A valveseating tool comprising two independent members t'. e.-the roller-carrier provided with one set ot' radially-arranged horizontally-rotating rollers and one set of radially-arranged verticallyinclined rollers, and a sleeve having a track to frictionallyengage the faces of said inclined rollers and having a tapered pin to frictionally-engage the faces of the horizontal rollers, whereby both sets of rollers may be simultaneously driven by the rotation of said sleeve, substantially as and for the purpose described.

9. In a valve-seating tool, the combination with the roller carrier, of radially-disposed conical rollers mounted thereon with their axes at an inclination to the axis of the carrier, the horizontal rollers with their axes parallel to the axis of the carrier and arranged in the same radial plane as the axis of the inclined rollers, the driving sleeve having a conically-faced track to coincide with the pitch of, and bear upon the faces of the conical rollers, and a conical driving-pin to engage the horizontal rollers, whereby both sets of rollers may be driven simultaneously, substantially as described.

10. In a valve-seating tool, a unitary rollercarrier adapted for carrying one set of rollers having their axes substantially parallel with the tool-axis and another set of rollers having their axes inclined to the tool-axis, combined with two sets of rollers having their axes arranged as set forth and of which the corresponding rollers, of each set respectively, are maintained in the same planes radially of the tool-axis.

11. In a valve-seating tool, a unitary rollercarrier combined with two sets of rollers, of which the rollers in one set are located in the same radial planes, respectively, with those of the other set, and means for simultaneously applying power to each set of rollers for turning them in the same direction.

FRANCIS H. RICHARDS.

Witnesses:

HENRY L. RECKARD, EMMA G. FOWLER.

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