US864143A - Explosive-engine. - Google Patents

Description

No. 864,143. PATENTED AUG. 20, 1907. H. 0 FRIGKE & e. E. TURNER.

EXPLOSIVE ENGINE.

APPLICATION FILED MARJQ. 1907.

3 SHEETS-SHEET 1.

INVENTORS PAT MEQ AUG. 20, 190?.

M. E UN I .G N L n no L P T. RX PE G E APPLICATION nun MAE.19.1907.

' a SHEETS-SHEET z.

VENTORS' UNITED STATES PATENT OFFICE.

iiiititi? FRIoKn AND GEORGE EQMTURNEB, or PITTSBURG, PENNSYLVANIA, ASSIGNORS T0 TURNER-FRIoKE nrts rs ame COMPANY; OF PITTSBURG, PENNSYLVANIA, A

r CORPORATION OF PENNSYLVANIA.

EXPLOSIVE-ENGINE.

- ratentea Aug. 20, 1907.

Application filed March 19,1907. Serial No. 363,235,

- E. TURNER, citizens of the United States, residing at Pittsburggin the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in- Explosive Engines; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enablev others skilled in the art to which it appertains to make and use the same.

Our invention consists in the novel features hereim after describedreference being had to the accompanying drawings whichjillustrate one form in which we have contemplated embodying our invention and said invention is fully disclosed in the-following description and claims. i i

In the operationof gas or explosive engines, particularly those having two or more cylinders, it is often'desirable to throw out of operation the inlet valve, of one or more cylinders,as-for example when the engine is to be started by means of compressed air applied to one or more cylinders, and also when it is desired to remove and replace an igniter plug while the engine is running,

or for throwing out of operation one or more cylinders of a multiple cylinder engine when running on a very light load, etc. Our invention consists in making the inlet valve operating rod or stem in two parts, which is in itself desirable as it enables the valve to be operated in a perfectly straight line, without any lateral strain,

or twist with respect to its seat, and we provide a movable guide for the upper end of the lower part of the valve operating rod, which can be moved and held in position so'that' the rod will not actuate the valve, and

this mechanism for breaking the inlet valve stem or rod,

which is described in detail hereafter is preferably employed in conjunction with some means for opening the exhaust valve of the same cylinder and holding it open, to prevent'compression or rarefication in the cylinsder, and thus relieve the other cylinders of the engine, where there are several, from unnecessary load. We have shown herein one means for relieving the exhaust v valve and holding it open, which can be advantageously employed, but the specific details of such relief mech-- anism we do not claim, and other forms of relief mech-.

anism maybe employed.

In the drawings, Figure 1 represents a vertical sec tional view of a gas engine, of the multiple cylinder type, taken on a plane extending through a cylinder and the inlet and exhaust valves therefor, and showing the mechanism for operating and controlling said valves.- Fig. 2 is an enlarged sectional yiew of a portion of Fig. 1 showing the inlet valve and the mechanism for operating and controlling the same. Fig. 3 is a horizontal section on line 83 Fig. 2. Fig. 4 is a perspective view showing various parts ofthe valve operating mechanism shown in Fig. 2, showing the parts separated. Fig. 4 is a detail perspecti'il'e view of a modified form of bracket for locking the valve operating rod guide in operative position. Fig. 5 is a view similar to Fig. 2 showing the valve operating mechanism in inoperative position. Fig. 6 is an enlarged sectional view of part of Fig. 1 showing the exhaust valve and the mechanism fog operating and controlling thesame, the said valve being shown in open or inoperative position. Fig. 7 is a horizontal section on line 7-7 of Fig. 6. Fig. 8 is a detail perspective view oithe devices for throwing the exhaust valve into inoperative position, the parts being separated.

In the drawings A represents the engine base of an explosive engine which may have one, two or more cylinders, only one of which shows in the sectional view Fig. 1.

B represents the cylinder, 0 the piston, the piston rod, E the crank shaft; all of which may be of any preferred construction.

F represents the inlet passage for the explosive mixtur'e and F represents the inlet valve, fitting a seat f in said passage. The valve F is provided with a stem f passing through a suitable bearing and having a collar f 2 adjustably secured on its lower end, between which and the bearing is a coiled spring f which keeps the valve F normally seated.

Below the valve stem f and normally in line therewith is the inlet valve operating rod, preferably formed in two parts f*, f adjustably connected. We prefer to form the upper end of the part f 5 with a threaded socket into which the lower end of the part f is adjustably screwed, and a jam nut holds the parts in their adjusted positions. The lower end of part f screws into a yoke f 6 pivotally connected vby a pin f 7 to ahorizontal yoke on the end of an arm which is pivoted to a stationary part of the base; The pin f also carries a friction roller which engages the inlet cam h on the inlet cam shaft H,-said shaft being driven by gearing from'the crank shaft at half the speed of the crank shaft, as is usual in engines of the four cycle type.

The upper part f 4 of the valve rod, extends through a bracket I, secured to the exterior of the cylinder, and provided with an aperture 2' of greater diameter than the rod f a second aperture i of the same size, but

' disposed angularly to the first aperture as shown. nest in Fig. 2, and a slot 2" connecting the aperturesi and i,

and of less diameter than said apertures but wide enough to permit the passage of the rod f.

or collar is turned as at l to fit either of the apertures i r i which we term locking apertures, and the upper part of the collar is,enlarged to provide a shoulder l and a milled portion 1*, to facilitate operating the device. In assembling the parts as shown in Figs. 1 and 2, the guide or collar L is slipped over the rod f and the locking portion 1 is dropped into the locking aper turo i of bracket I, thereby holding the rod f exactly in line with the lower end of the valve stem f. Whenth parts are in this relation and the engine is running, it will be seen that the cam h will lift the rod f f and will thereby lift the valve F from its seat at each rotation of the cam shaft H.

When it is desired to throw the cylinder out of operation for any purpose, it is only necessary to raise the movable collar or guide L out of the locking aperture 2', when the rod f, f can be pulled. forward, out of line with the valve stem f as shown clearly inFig. 5. The valve operating rod will remain in this-position by gravity, but it may be positively locked by dropping the locking portion l of the collar L into locking aperture 2" as shown in Fig. 5. The exterior locking aperture 1 is not essential to the operation of .the device, however, and might be omitted, in which case the bracket I would be shaped as shown in Fig. 4, the slot v? extending far enough to permit the rod f to disengage the valve stem.

When the valve operating rod f f 5 is thrown out of operative position, the operation of the cam is not affe ted, and the cam will continue to operate the rod, without affecting the inlet valve, so that when the rod is restored to its-normal position the parts will be immediately restored to their working condition, and the inlet valve will he opened at the proper time in the cVCle.

In connection with the mechanism above described,"

we prefer to provide means for holding the exhaust valve open, while the inlet valve remains seated, in

order to relieve the suction or compression of the cyl-' inder.

In the drawings we have shown one form of device which may be employed for this purpose, see Figs. 1,6, '7 and 8.

(i represents the exhaust passage for the cylinder C, and G the exhaust valve engaging a seat 9, and having .1. sic-m g provided with a hearing, a collar 9 and spring y, for holdir g the valve normally on its seat, all substantially as described with reference to the inlet val vc. i

The exhaust valve is operated by a two part rod 9 f, adjuslably unit d, the lower end of said rod being provided with a yoke 1 pi voted at g to a yoke on an arm 1 and carrying a friction roller 1}", adapted to engage a cam k on the exhaust cam shalt K, connected by the usual gcaring with the crank shaft. The part g ol thrvalve rod engages a stationary guide I and llulower part y extends through a sleeve M secured to the engine base and provided with a spiral slot in (see Fig. 8). ."l evo M, and is provided with a sci screw m, thee-nil of which engages the spiral slot '11: in sitid sleeve, so that' when thc hub M is turned, it will hcraiscd or lowered.

The hub M is providf-d with an arin or handle in? and said huh is'const rooted to engage ashoulder on the rod I 9" (formed in this instance by the socket'g when the.

lmlrll is rotated in one direction, thus lifting the A rotii-lahlc hub M is fitted over the valve G off'of its seat and raising it to the sameora greater height than that to which the cam normally raises said valve, thus disconnecting the cam and valve, and holding the exhaust valve open as long as is desired. By turning the hub M in the opposite direction the valve rod 9 9 will be lowered to bring the i'rietionroll g into operative'relation with the exhaust cam k.

'What' we claim and out is:

1. In an'explosive engine, the combination with a' cylinder having a passage communicating therewith, a valve for said passage, a valve actuating cam, valve operating mechanism, interposed between said cam and said valve, including a part held positively in fixed relation to said desire to secure by Letters Iattion wlth'said valve, and manually operated means Io'r locking said partin operative relation with said valve for securing the continuous operation of said valve by said cam when desired, substantially'as described.-

2. In an explosive engine; the combination with u'cylinder and an inlet valve for said cylinder, of an inlet valve operating cam, connections extending from saidv cam to said valve, including a rod having a pivotal connection at one end holding said'rod in fixed relation with said cam but permitting its other end to swing out of operative relation with other parts of said connections andmeans for locking said movable rod in operativeposltion, substantially as described.

3. I n an explosive engine, the combination-with a cylinder, and an inlet valve for said cylinder, of an inlet valve operating cam, connections extending from said cam to said valve, including a rod, having a pivotal connection permitting it to swing out of operative relation with other parts of said connections, a movable guide for the free end of said rod, and means for locking said guide in position to hold said rod in operative position, substantially as described.

4. In an explosive engine, the combination with a cylinder, and an inlet valve for said cylinder, of an inlet valve operating cam, connectionsextending from said cam to permitting it to swing out of operative relation with other parts of said connections a guide for the free end of said rod movable in a direction. longitudinally of said rod, and a part having a locking aperture to receive a portion ofsaid guide,,and hold said rod in operative position, substantially as described 5. In an explosive engine, the combination with a cylinder, and an' inlet valve for said cylinder, of an inlet valve operating cam, connections extending from said cam to said valve, including a rod, having a pivotal connection permitting it to swing out of operative relation withother parts of'said connections, a guide for said rod movable in guide, and a slot extending from said locking aperture to permit said rod to move into inoperative position, substantially as described.

operating cam, connections extending from .said dam 'to said valve, including a rod,,-having a pivotal connection parts of said connections, a guidejfor the free end of said rod movable in a direction longitudinally. of said rod, :1 locking bracket provided with locking-recesses, for re eeiving a part of the movable guidc'fo'r holding the rod in operative and inoperative position, substantially as de-' scribed.

vided with a stern, of team for operating said valve, a

valve, havinga-plvotal connection one end holding-said said valve, including a rod, having a pivotal connection.

a direction longitudinally of said rod, and a lockingdevice' having a locking aperture to receive a portion of said- 6. In an explosive engine, the combination with a cylinder, and an inlet valve for said cylinder, of an inlet valve permitting it to swing out of operative relation with other 7. in an explosive engine, the combination with a'cylinder 1m ving an inlet passage and an inlet valve therefor provalve operatingrod interposed' betwoen the cam and saidl'ntl lnfixed relation with said. earn, but, permitting it s otber'end tobe moved into and onto! operative. relation with said .valve stem, and aJocking device. for holding-the cam, but movable manually into and out of operative ml non-pivoted end of said valve rod, in operative relation to said valve stem, substantially as described.

8.- -In an explosive engine, the combination with a valve pi ovlded w th a valve stem, of a separate valve operating rod, norlna'lly located in line with the valve stem, and having a pivotal connection at its lower end, permitting it to move out of-alinement with said stem, a vertically movable guide on said rod, provided with a locking portion, and a bracket having locking apertures to receive said locking portion of the guide for holding said rod in operative and inoperative position, and a slot connecting said looking apertures, of less width than said apertures for permitting the passage of the rod from the operative to th inoperative position, substantially as described.

In testimony whereof we afiix our signatures, in the'15

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