US983571A - Device for truing up the valves of gas-engines, &c. - Google Patents

Description

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717N138; w gm wyww I; LR YA DEVICE FOR TRUING UP THE VALVES 0F GAS-ENGINES,&c. i\i.i..\.\' Camiaos SARUF-NT, Lowell, Mass. Filed Oct. 20, 1905. Serial No. 283,598.

To all whom it may concern:

Be it known that I, ALLAN C. SARGENT, a. citizen of the United States, residing at Lowell, in the county of Middlcsex, State of Massachusetts, have invented a certain new and useful Im rovement in Devices for Truing Up the alves of Gas-Engines, &c., of which the following is a specification, reference being had therein to the accompanying drawings.

The valves of gas and similar engines become pitted, and more or less covered with scale, so that after a certain amount ,of use they no longer seat properly. So far as I am aware, the usual practice is to remove them from the engines and true them up byt either a tool or a rotary grinder.

The general object of the invention is to provide a. simple, convenient, and practical device for use in train -up the valves of gas engines, and other lite valves, and more especially to provide a device suitable for the use of an automobilist or motor-boat map with which any one may effect such truing-up whenever necessary.

A further ob'ect of the invention is to provide a han y portable device for the pur ose.

1e invention consists in a device havin featureswhich will now be explained witli the aid of the accompanying drawings, in which latt'er,--

Figure 1 shows in side elevation a device in which the invention is embodied, with a valve applied thereto, certain ortions of the device eing broken away as liercinafter explained. Fig. 2 is an and elevation of the device of Fi 1, looking from the righthand side in Fig. 1, the supporting-yoke for tho valvcrotating implement being removed and certain portions being broken away.

F1 3 shows the supporting-yoke for the v a erotating implement, separately. a portion thereof being broken away. ig. 4 is a view in section on line 4, 4, of Fig. 2, showin I the means of supporting, securing, and

tit usting one of the truing-tools. Fig. 4

is an elevation of one of the truing tools,

detached. Fig. 4' is an end elevation of the said truing tool. Fig. 5 is a view in section on line 5, I), Fig. 1. Fig. 6 shows in side elevation a valve such as m invention is designed to operate upon. Fig. 7 shows the conforming to that of the seating face 2 of said valve in end elevation, looking from the r ght in Fig. 6. Fig. 8 shows in side elevation a suitable tool for use in rotating a valve like that of Figs. 6 and 7 when apfilled to a device embodying the invention.

ig. 0 is an and elevation of the said tool, looking from the left in Fig. 8.

The valve which is shown in Figs. (3 and T is well-known. It has 11 head 1 provider] with a beveled seating face 2, and a cylin' drical stem 3. The device in which the invention resides is provided with a hearing or bearings adapted to receive the stem 3 of the valve, and within which the said stem may turn or rotate, and with one or more cuttin or alirading tools ada ted to act upon t ie seatin face 2 as the va ve is turned or rotated, to ress oil and true u the said face. The device is provided wit a guide or hearing for an implement employed to effect the turning or rotating of the valve in convenient. manner. Preferably, the fixed part or frame of the device is constructed suitably for bein clamped in a vise for the purpose of enabling the device to be sup ported and held while the operation of trulug-up a valve is being performed.

llaving reference, now, to the illustrated embodiment of the invention, at 4 Fig. 1, is the fixed wart or frame of the tCVlCC, it being shape to enable it to lit between the jaws of a vise and be held secureliy thereby. .'\t 41, 41, are hearings with whici the said fixed part or frame is provided to receive the stem 3 of a valve. The number and length of the hearings may vary in piilCllCt. llushings 42, 42, are applied to the same to fit the stem of the valve. Such bushings are rcmovably secured in place in any suitable manner in order to enable them tohe replaced hy others having bores of a ditlercnl diameter when required, so as thereby to provide for accommodating valves having stems of various sizes. A valve is shown applied in Fig. 1, with the stem 3 thereof fitted within the bushings 42, 42.

At 5 is a tool for acting upon the seating face 2 of the valve. It is in the present instance a cutting-blade, as shown best in Figs. 4, 4", and 4*. formed for instance of steel. It is mounted in an arm 43 of the fixed part or frame 4. The said arm is recessed at 4-1 to form a pocket to receive the said tool, and is irovided with a clampingscrew 6 by which the tool is securely held in place with in the recess or pocket. The threaded stem of the said clam ing-screw works in a screwtlireadcd hole hat is tapped through one side-wall of the recess or pocket, and its inner end engages with one side of the tool. the tool being clamped between the said end and the opposite wall of the recess or pocket. The tool is Sll ported in a position in which its working on ge has an angle or inclination the valve. To provide for adjustment of the tool toward and from the valve, and for variation of the angle or inclination of the -tool, the adjusting- screws 7, 7, are employed. The said adjusting-screws engage with the bark of the tool at opposite point.s.in the length of the latter. The threaded stems thereof work in screw-threadcd holes which are tapped in the arm 43, and the inner ends thereof engage with the back of the tool. One or more tools 5 may be employed. The device shown in the drawings is constructed to employ three. The fixed part or frame is furnished with a number of supportingarms 43 corresponding with the number of tools which is designed to be used. In Fig. 1 one tool is shown, the others and the sccuring and adjusting devices therefor being omitted and the corresponding supporting arms being broken away. I contemplate in some instances em loying a tool which is constituted of a slip or block of carborundum, emer or other suitable abrading ma terial in [)KICC of the steel cutter.

In the use of the device, it is clamped in a vise or otherwise. conveniently held, and a valve is applied, substantially in the manner which is represented in Fig. 1. The seating face 2 of the valve is )XOSSQtl against the tool I or tools 5, and the va ve is turned or rotated so as to produce the required action of the said tool or tools upon the said face. The turning movement of the valve may be communicatedthcreto by means of an implement on the order of a screw-d river having its cngaging end entered into the slit 11, Fig. 7, in the end of the valve. A convenient implement for the purpose is shown in Figs. 8 and 9, in which 8 is a shank having at one end thereof an ex )anded or widened blade 81. The shank 8 is designed to be clasped within the 'aws of a brace-bit. Upon inserting the said blade 81 into the slit 11 and turnin the implement, meanwhile transmitting tirough' the latter pressure acting to press the seating face of the valve against the tool or tools, the new seat will be obtained.

A guide for supporting and steadying the turning implement is constituted by the yoke .9, Figs. 1 and 3. The latter is three-armed,

and is secured to the arms 43, 43, of the fixed part or frame by means of screws 91, one of which is shown in Fig. 1., which ass through holes 94, 94, in the outer ends 0 the arms of the yoke. The said oke has a guide-bearing 92, Fi s. 1 am 3, within which the shank 8 of t 10 turning implement is placed.

Vhat is claimed as the invention is,-

1. In a truing-up device for valves, the combination with a frame provided with valve-centering devices and one or more truing-up tools mounte upon the head-end of the said frame, of a guiding device also mounted upon the said head-end and having a ide or rest adapted to removably receive a t ng-stemmed separate hand-implement by which the centered valve may be engaged and turned, and within which guide or rest of a guide or rest in front of said tool or 1 tools, adapted for removal and replacement I to facilitate the insertion and removal ofthe valve, and also adapted to removably receive a long-stemmed separate hand'implement for use. in t-urning t-he valve, and support the said implement in line with the hearing or bearings the said guide or rest permittin free (.Ht wise movement of the said imp ement to engage the valve and press the face of the latter into enga ement with the said tool or tools, to be acte upon thereby.

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

ALLAN CAMERON SARGENT. Witnesses ()snoaiv H. CILLEY,

llHTlI A. NonMiNo'roN,

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