US936318A

US936318A - Gas-engine.

Info

Publication number: US936318A
Application number: US?16?4209A
Authority: US
Inventors: Bertram E Halverstadt
Original assignee: Individual
Current assignee: Individual
Publication date: 1909-10-12
Anticipated expiration: 1926-10-12

Description

B. E. HALVERSTADT.

. GAS ENGINE.

APPLIOATIOH FILED we. 23,1907. RENEWED SEPT. 7, 1909.

Patented 0ct.12,1909.

2 SHEETS-SHEET 1.

INVENTOR 7 aw M WuTME-EE-EE ATTORNEY B. E. HALVERSTADT.

(ms ENGINE. I j APPLIOATIGN FILED AUG. 23, 1907. RENEWED SEPT. 7, 1909.

936,3 1 8 Patented Oct. 12, 1909. I 2 SHEETS-B INVEN GkS-ENGINE.

Agplication filed iiiigust 23, 1907, Serial 1%. 32mm.

To all whom it may concern: v

Be it known that I, BERTRAM I {KATHER- s'rlio'r, a citizen of the United rersiding at Lectonizi, Cohinihieiio county, State of Ohio, have invented or discovered new and useful 1m rovements in ijrue-l lngines, of which the following o specification.

My invention relates to gas engines and consists in providing means whereby the valves and the igiiit. r are operated at the first revolution of the crank shaft; after the governor has released the valve and. ignilor controllers or has assumedv the position whereby gas may he again supplied. to the cylinder.

Heretofore, it has been common to orrange the control of the valves and the niter so that the valve shaft, which mikes one revolution While the crank-slm't't 11m kes two revolutions, will operate the valves and the ignite at every revolution of the valve shaft, or at every other revolutionof the engine shaft. t is apparent that, in such a method of regulation, the speed of the 611-- giiie will materially decrease after the goverlror has operated to permitthegzis to he 's ipplied to the cylinder. due to the feet that the engine'ims to nhike two lCVOlHiiOIlS after the governor has; operated, as described, before mother explosion can take place. With my ll1\l3lll'l()ll,'l1llll one revolw tion at most of the crank shaft is required after the governor has set free the devices for supplying gee hei'or another explosion can occur. By my invention. therefore, ihe

' regulation is more perfect and the weight of the iiy-Wheel may he grea 1 reduced.

ieirrring to the drawings, Figure 1 is a side elevation of a portion of a gas engine embodyingmy invention; .Fig. 2 an end View, portly broken away; F 1g. 3, a View similar to Fig. 1, the parts beirg in a different position; end Fig. 4, an end view of the parts in the some p0 ion, parts being in section and broken :1, y.

On the drznviiigs, 1 represents the cylinder of my gas engine; 2, the exhz'uist valve; 3, the inlet valve; and it. the igiiiter arm, the details of the latter beingemitted as they are Well kiiowir' 4 1 the piston rod and 5, t u Iiw' shaft, the letter he vulve 0pm} 1 M being driven iii any :iesireo new; r from the former. that the \h izi'l t shell rotate. he imuuh hm once re crank shaft rot: s twice.

Specification of Letters Extent.

i l l t i Patented 5 Renewed September 7, 1909.

(i represents; lever pivoted below the cylinder, our end in mg pivoi'ziliy wt to the exhaust vziivv .2. whi h by the iapiiiigj lir h. he animated h lever omice stem 8 h branches f:

forwardly to it Position under i11 Mei-n; and is provided with tl'ie-ixolh-i' which may ooiiperate with either, of the come .12 or 1-3, :is-will he e:-:plaine l. The hrnilch 1i) carries the lever 91, having pivoted thereto at one. end. the stem and -4 the valve 0 at the other end the roller 23. which may operate With either the cams :iod will be presently exphiinmil. "lhc valve 3 seated by the spring as n as the lever 21 i9: free to yield. The come i end 1'? are :irrniiig'ed. to engagewilh zlxe love" 4' and lift the some and thereby cause an electric spark iv :2 manner wi l] liiic vi i 25 is a. rock shaft operated by governor liereiiizii'ter to he th-ecriheil. 3 shaft has secured thereto the pendent arm :26, which when swung to the from of F 3 inay have its lOWU-l' end thrown on top of the rigid pin 27 secured in the branch 18 of the-lever 6., when the

com

12 or 13 has lowered the forward end or the lever. {he

pin 28 in the end of the arm 25; to engage the sidool": the pin 27. 11 also carries opposite the cams 13, the came 29 and 30, whi h hare incline running diagonally or the axis of the sleeve, the incline on the (EH11 on the brunch lower is locked by the arn1 26. the

cams

29 and 30 will cause the sleeve 11 and all the cams thereon to reciprocate branches carry rollers 34 and 35 arranged to be engaged by the

cams

29 and 36 at each revolution of the sleeve, when the lever 6 This action of back and forth every full revolution. As the inclines 31 are between the

cams

12 and 13, the reciprocatrions take place when the cams are horizontal and therefore out of engagement with the roller 20, and there is no obstruction to prevent the sleeve moving longitudmally whenever either of the 111- clines 31 rides against either of the rollers 35% or The inclines 31 are of such a length that either the cam 12 is thrown above the roller 20 or the cam 13 is thrown above the same.

The camslel and 15 are shifted as the sleeve rec'iprocates so as to first present one above the roller 23 and then the other. The

cams

16 and 17 as they reciprocate will be 111 position to operate the igniter lever 4' at any half revolution after the arm 26 releases the lever 6.

The shaft 5 carries the bevel gear 36,

meshing with the bevel gear 37 on the gov- 5 occurs and ernor shaft 38, carrying the arms 39 of the centrifugal governor 40 of a wellknown type. The arms 39 are connected by the links 41 to the sleeve 42 slidable on but rotary with the shaft 38. The rock-shaft 25 is provided with the forked arm 43 pivoted to the pins 41 on the collar 45 on the sleeve, this collar being in a groove (see Fig. 2) in the sleeve, so that the collar may follow the rcciprocations of the sleeve but cannot rotate with it. i

If the partsare as in Figs. 1 and 2, the cam 13, being in en agement with the roller 20, has caused the ever 6 to be rocked so as to open the exhaust valve 2. As the cam 13 passes from. the roller 20, the valve 2 closes. following this the cam 15 actuates the lever 21 so as to open the inlet valve .3. The cam- 15 then releases the'levcr 21 and the spring 22 closes the valve 3. Toward the close of the compression stroke, the cam 17 actuates the igniter lever 4. Then the explosion of the gases the working stroke takes place. These steps are repeated until the s ed of the engine is so great as to cause t e governor to rock the shaft 25 and bring the lower end of the arm 26 over the in 27.

This locks the exhaust valve open an holds.

the outlines of the cams which-happen to be in their planes at the particular instant of the release of the pin 27.. The sleeve 11 does not reciprocate while the arm 26 is inactive because one of the

cams

29 and 30 passes under one of the rollers 3 1 and 35 while they are in their raised position; it is only when the rollers 34 and 35 are lowered and the

cams

29 and 30 are passing between them that the reciprocation takes place. It is thus seen that,-by making the cams in'pairs and causing them alternately to come into position for actuating the valves, I have provided a means whereby, as soon as the governor acts'to release the in 27, the gas is exploded as early as the first revolution of the engine. 2

The-first suction-stroke of the en ine after the governor permit@ the inlet valve to be opened, that is, after'the engine speed falls below a predetermined rate, fills. the cylinder with explosive gases in the well-known manner. w

I make

tlie cams

12 and 13 with grooves so as to guide or keep' the cam '30 and the sleeve in proper relative positions, but other means may be used for the purpose. v

I do not wish to limit myself in the precise elements and combinations shown and described, all it is apparent that various other means could be user and operate the valves, or to provide means of admitting gas on the part revolution of the engine.

' I claim 1. In a gas engine, a gas inlet valve, means preventing the opening thereof when the speed of the engine reaches a predetermined rate, and mechanical means for opening the said valve-for any suction-stroke provided the speed of the engine has dropped below said rate.

2. In a gas engine, a gas inlet valve and an ignition device, means for preventin the opening of the valve whenthe speed 0 the engine reaches a redetermined rate, and mechanical means or opening the said valve and actuating the ignition device in series at the next suction-stroke of the engine after the speed thereof falls below said rate.

to reciprocate the sleeve 3. In a gasengine, a gas inlet valve, a

vice upon the reduction of the engine speed,

below said predetermined rate.

4. In a gas engine, an exhaust valve, means-fol" looking it open while the'speed of the en 'ine is at or above a predetermined rate, ant means independent of the gas pressure for releasing the locking means for any suction-stroke provided the speed of the engine has dropped below said rate.

5. In a gas engine, a gas inlet valve, a plurality of speed cams for actuating the same, means for making the said cams inoperative to actuate the valve, and means for causing the cams to be alternatively in position to operate the valve when released.

6. In a gas engine, a gas inlet valve, a pair of spaced cams for actuatingthe same, means for bringing the cams alternatively in position to operate the valve, means for preventing the valve from actuation by said cams and for releasing said preventin means so that the cam in position aforesaid may actuate the valve.

7. In a gas engine, a rotary cam shaft, a sleeve rotatable with but slidable 011 the shaft and carrying a pair of oppositely placed but staggered cams, a gas valve adapted to be actuated by the cams, means for preventing the cams from actuating the valve, and means for causing the sleeve to rec1procate during such prevent-mg operation, so that the cams shall be alternatively the speed of the engine, and means for reciprocating the cams to continue the operation of the engine at the first revolution after the action of the governing means.

10. In a gas engine, a cam-shaft, a sleeve on the cam-shaft carrying cams, a speed governing device, and means for sliding the cams on the shaftto continue the operation of the engine at the first revolution after the action of the governing means.

11. In a gas engine, a cam shaft, double cams thereon olf-set from each other, gas

valves operated by said cams, means for reciprocating the cams alternately at each half revolution of the crank shaft whenever the engine exceeds a predetermined speed, and means for making the cams inoperative until the engine speed has been reduced to said predetermined speed. i

12; In a gas engine, a reciprocable sleeve, off-set cams thereon, a gas valve, a valve operating element engageable by one or the other of said cams according to the position of the same, means for preventing the cams from engaging said element when the speed of the engine reaches a predetermined value, and means for reciprocating the sleeve so as to bring the cams consecutively in the plane of. the valve-operating element so thatfwhen the speed of the engine falls to said predetermined value, the first cam to be in the said plane will actuate the said element.

Signed at Leetonia, Ohio, this 16 day of August 1907.

BERTRAIVL E. IIALVERSTA'DT.

Witnesses JOHN R. ARNOLD, A. Z. BALLANTYNE.