Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS659944 A
Publication typeGrant
Publication dateOct 16, 1900
Filing dateMar 24, 1900
Priority dateMar 24, 1900
Publication numberUS 659944 A, US 659944A, US-A-659944, US659944 A, US659944A
InventorsHarry D Weed
Original AssigneeHarry D Weed
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 659944 A
Previous page
Next page
Description  (OCR text may contain errors)

` N. 659,944.` Pateted 001. I6, |900.' H. D. WEED.


(Application led Mar. 24, 1900.)

ma Monof.) 2 sham-sheet l.

y FL'gJ No. 659,944. Patented Oct. I6, |900.


(Application filed. Mar. 24,1900.)

2 Sheets--Sheet 2.

`(Blu Model.)


SEGFiIMtTIUN forming part of Lettere 'Potent No, 656,944; tinted. Detener in, liet).

Application iiioci iziareia 2li, N500. Benni No, lOIlEL (lio morini.)

To (all wmu't it may concern:

Be it known that if, HARRY WEE1`1,3. citizen of the United States, residing et Syracuse,

in the county of Onondaga and Siete of New.

York., have invented certain new and usefui Improvement-s in GneEugiues, of' which the foilowing is a specification, reference being lied to the drawings eocorupanying and forming a port of the Seme.

The invention subject of my present application is en improvement in gosengines, more particularly of the class known es twocycie explosive-engines, and has for ite mein objects to simplify end improve the construction of such engines, to increase their efiiciency, and to prov-ido for :i better regulation of the sume, especially with n view'toI rendering them more eveiiebie in snieii sizes for use in the propulsion of vehicles und other enniogous purposes.

The specic features oi the invention ere largely matters o constructive detail; but e prominent feature to which i attribute much oi the practical success of the engine coneists in a means for regulating the force of the expioeion in proportion to the amount of Work which the engine is celled upon to pe rform and whicineteted in generniterms, is es follows: In conjunction with @Working cylinder end e ges-chamber and a, piston com mon to both I employ means for introducing into the Working cylinder from the ges-uhmm ber u fuii charge of mixed gos and nir :it or neer the end of forward movement of lerich stroke, which displnces the gaseous products of combustion Within the cylinder ondis then 'prior to ignition compressed by the return of the piston. Under conditions of fuliiond, when the nmxiniuin expensive eiect of each explosion is required, the whole charge of mixed nir und gos is retained and exploded Within the cylinder; but should theload be iessened the 1n eximum explosiveeffect would be in. excessfot' the requirements of the work to be done. To compensoteior this, I provide ineens, preferably automatic, by which e. portion of the unexploded charge corresponding'in :unount to the decrease in 10nd` is withdrawn from the working cylinder und returned through a suitable oy-poss to the Vopposite side of the same, eo that the actuel portioned in einen 'i e engine is osiiieii on to ne forni.

in the accompanying drerfinge, which iiinetrate the improvement iu the iiest form of which i um now nwere "`igure 1 is e rentrni vertical section of engine embodying: my invention. Fig. 2 is e view in eide elevation of sin automatic governor. Fig. 3 :t simi- `ier View of the suine from the opposite side.

Fig. 4 is :i View, partly in Section. oi the ig; uitingl device.

The engine is prov'ided with un extended cylinder, comprising the working or ex sion cinunber 'P nud the ge-s-ohzi1niier iii. through the sides or". which lutter the mein shaft M posses und within w iioh is the ernnh, connectedio the pieton Y oy the rod A. it the ioiver end of the oyiinder n puppet i other reive E is pinned to admit u. mixture oi nir euri from pigro i?. into the gestehen ber N.

An iguitnor of .tiny proper eonstrnution ie icon-ted in the upper end of the Working cylinder P; but i prefer to einuioy or this; gauw 'uiiy--ileei ed dorme which. ie iiiurf Hotel in .iotni in Fig'. et.

0 in nu oeeentric on the rnuin eheit, win-zii gives motion to e. strep. having; uouutr sockebiiite extension G. rod U, retained within the soc-net against foree of e spiriti spring; Gf und prevented rom rotating by ein g, passing; ti'xrourgh the roti und two verticei siete in the socket. "iie rod` works through n guide L, which secured, to the freine of the engin. Frein the :ii-reni., ment described it ie evident tiret the nouer end of rod U reciproeetes vorticziiiy i :iis-1.o osciliates from side to side. This motion is token advantage of to cause the und. i5. rod to engage with und mise u epru Y ed erm V, fixed to e. rook-sinift (i, that onto into the cylinder P, Where it Curries u utenti! u; arm 2. Then 'the rod U engager; :ind rather'. the erm V, the tiran 2 turned into ennui-ifo ment with en insulated electric.terminati and caused to moire good electr-ioni ooi; f therewith, but the upward movenniiri. au rod U being succeeded by u interni mm inout of its end it dieeugiges the oran V, u" boing retreated by ite spring,A etti-inte e oep In the letter ie e.'

tion of the contacts2 and 3, with the formation of a spark that ignites the charge in the' cylinder. V

Such further details of construction as have not been described will be' understood .from a statement of the operation ofthe engine.

It being assumed that at each upward or return strokeofthe piston anA explosive mix-h ture is drawn into thev chamber N through the valve F and that such charge is compressed by the downstroke o f the piston, we may consider-the action oi the latter from the point in its course at which it has opened the port C, communicating with chamber N, and admitted a charge of the mixture to the cylinder P. During the upstroke of the pis-v v gas, imparting to it van upward direction,

'- mailling burned gases.

thereby forcingout through port D the re- The passagev B, which conducts to the port C the mixture of gas and air, is extended to form a by-pass from the chamber Nic the upper end of the chamber P, and in this bypassie located a valve H of any suitable kind to control the passage. When the explosion of the full chargein the cylinder Pdevelops more power than is needed, the valve H is opened during the upward stroke of the piston, thereby permitting s. portion. of the charge to escape from the cylinder P and return to the chamber N. This valve may be operated -or controlled yin'any suitable manner; but Ilprefer to use for the purpose an automatic governor, such as is shown in Figs. 2 and 3. In said figures, S shows an eccentric, the. throw of .which is controlled by the position of the pivoted weighted arms W W. The eccentric is provided with an elongated opening O and -has a projecting arm S',which is rigidly fastened to the stud W,upon which one of the weighted arms W is mounted. The studs Wl W carry gears K', which engage with a gear K, mounted on shaft M, and opcrate to move weightsW'W in unison. The

governorsprings T are attached to yokepieces T T, which are connected to the weight- -ed arms W by means of studs-X, and a series of .holes E are provided in the-weighted-arms, by means of which the points of connection between the arms and the yoke-pieces made by the studs X may be varied to regulate the speed* of the engine. The automatic regulator is adjusted in the manner. described according to the speed desired and operates to open the valve H to a greater or less extent during the upward movement of the piston Y and to permit a portion of the charge to .ma black' into the chamber N. The extent to which vslve'H is lthus opened will obviously depend upon the speed of the engine and the position of the weighted arms-W consequent thereon.

By admitting at each stroke a full charge I am enabled to expel all of the gaseous produc'ts of combustion, thus insuring anex'plosion at each stroke, regardless of the amountv of the iniialnmable mixture which the cy1in.

der contains ,at the instant when the spark passes; and by the employment in this connection of a working cylinder, a gas-cham'- ber, and a piston common to both, in combination with means by-which a portion of this full charge before explosion, according to variations in the load, is withdrawn from the working cylinder on the one side of the pision and returned to the gas-chamber on the other side of the piston, I am-enabled to secure in the engine a. high degree of eiciency, coupled with simplicity of construction and economy in the space occupied by the structure. 4

As it may happenwhen-the engine is run-l' ning light that theI explosive charge is no't above that` when 4the engine is running ou anything less than maximum load the amount of gaswithin the working cylinderat the time the explosion takes place is reduced in pro-- los portion to the reduction-of the loadof the,`

engine, so that when the piston arrives in p'o sitiou to uncover the exhaust-port D the'gass within the working cylinder will 4be underiless compression than 'when the .engine is working at the maximum load, sothat'the noise made by the exhaust is correspondingly lessened.

Ido not restrict myself to the special stroef. I

tural details nor to the precise location. and

arrangement of the ports and passages here inbefore described and illustrated, inasmuch as thesame can be varied to some' extent without departure fromjthe invention; but,

Having I claimA is- 1. In a gas enginelthe combination with a working cylinder, a gas-'chamber communi-` eating withsaid cylinderand a piston' conimon to both said cylinder and said chamber,

now desribed my invention, what?v vrm of means for admitting to the workingcyiim` der full charges of explosive gas fromt'he gas- 'chamber and means whereby al portion of the admitted charge of gas proportionateto the amount of work theengin'e is callefl upon to erform isi-withdrawn from the wo .king cylfor the purposes hereinhcfore set forth.-

.12..Iu a gas-engine, the combination with nder pri-or to ignition, substantie,i ly as and v the working cylinder, the gas-chamber and the piston, the working cylinder being connected with the gas-chamber through ports controlled by the piston, and also through a icy-pass from its upperorrearendyof a valve in said bypass for permittinga portion of an admitted charge, prior to ignition, to pass from the Working cylinder back to the gaschamber, asset forth.

3. In a gas-engine the combination with a. working cylinder, a gas-chamber, and a piston lwhich in its 'forward movement compresees the explosive mixture in the gaschamoer, and in its return movement, the charge admitted to the working cylinder, the latter and the gas-chamber being connected through ports controlled by the piston, and also by a livy-pass, of a valve in said by-pass, andwmeans for controlling the action of the same for permitting a portion of the charge admitted to the working cylinder to pass back to thev gas-chamber, .as and for the purpose set forth. K

4. In a gas-engine the combination with an extended cylinder one end of which constitutes the working cylinder or combustionchamber, and the other a chamber for the explosive mixture, the two being connected by a direct passage and by a bypass, of a piston working in the cylinder, and controlling in its movement the exhaust-port and also the inlet-port for admitting an explosive charge from the gas-chamber to the working cylin der, a valve in the by-pass and an automatic governor for operating the same, to permit portions of the compressed charges in the working cylinder, before ignition,to pass back to the gas-chamber, as set forth.

HARRY D. WEED. Witnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2495784 *Nov 21, 1945Jan 31, 1950Duncan Parking Meter CorpValve control for crankcase compression engines
US2607329 *Dec 13, 1949Aug 19, 1952Sanger Harry GTwo-cycle crankcase compression engine
US4232641 *Mar 2, 1978Nov 11, 1980Societe D'etudes De Machines Thermiques S.E.M.T.Method and device for improving the efficiency of internal combustion engines
Cooperative ClassificationF02M59/36, F02D1/00