US1024440A - Engine. - Google Patents

Description

J. G. GROWDES.

ENGINE.

APPLICATION FILED 110v. 25, 1910.

Patented Apr. 23, 1912.

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Z O L m w W. a

J. G. GROWDBS.

ENGINE.

APPLLOATION FILED NOV. 25, 1910.

Patented Apr. 23, 1912.

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J. G. GROWDES.

ENGINE:

APPLICATION FILED NOV. 25, 1910.

1924,4400 N Patented Apr. 23, 1912.

3 SHEETSSHEET 3.

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jToaZZ whom it may concernr dially-di sposed ports,- each aficxson ecBoWnns, or BOSTON, massncnusnrrs;

ENGINE.

'Be it known that I, JACKSON G. GRowDEs,

a citizen of the United States, residing at Boston, inthe county of Suffolk andState of Massachusetts, have invented certain new and useful Improvements in Engines, of which the following is a specification, reference being had to the accompanying drawlngs.

This invention relates to improvements engines; and an object of this invention to provide an engine which will be'simple in construction and most eflicient in operation.

In the drawings" illustrating the principle of this invention and the best 'mode now known .to ciple, Figure'l'i's a central longitudinal section through so much of an engine as is 'necessary'to illustrate this invention; Fig. 2 is a section on the line A-A of Fig. 1; Fig. 3 is a section on the line BB of Fig. 1 but showing the parts in a difierent relative position; Fig. 4 is a section onthe line- C-C of Fig. 1; Fig. 5 is a view similar to Fig. 1 butshows the exhaust ports centrally disposed and the pistons connected to different crank-shafts; Fig. 6 is a section on the line 'D-ig-j-Dflf' Fig. 5; and Fig. '7 is a view similar to- Figs. 1 and 5 butillustrates this invention as embodied in a single-, acting engine. v ,The 'wall of the stationary guide cylinder a is chambered, as is shown at a to provide the usual water-jacket audit is further formed near its middle with an inlet passage b the inner end of which opens into a semi-annular chamber a. The latter is in communication with the interior of the guide-cylinder a throughv two. series of raof thejs'e'riesd, e belng arranged on the arc eta-semicircle (Fig. 2). At each end of therylinder a and on the side thereof opposite from the inlet passage 6. {series'gof radially-disposed="exhaustsports Qwlnc ,--as in the eased the admission ports d,'e,- are-are ranged on the arc ofa""semicirclex(Fig. 4'). Each series f of radiall ports lead from the insi e .o ffthe stationary cylinder at to a semi-annular exhaust chamber g which communicates through an 'out-,

let passage k with theusual'exhaust pipe (not shown). l

Within the G m-lame slidably, fitted a hollow cylinder-piston i closed at its ends Specification of Letters Patent. Q'Application filed November 25, 1910. Serial No.

me .of applying that prinof crank-disks the inlet ports j -disp0sed exhaust art? But, obviously,

engine.

Patented Apr. 23, 19112. 5945005.

with a semiand formed near its middle ports j and neareach clrcular series of inlet of its ends with a semicircular series of ex haust ports 7e. Theports j, disposed, as is clearly shown 4. Connecting-rods m: are pivotally fastened to the cylinder-piston 2' at one end thereof and also to the crank-disks n in the usual manner.

Within the cylinder-piston z'jis slidably 7:: are radially in Figs. 2 and fitted a piston o of the usual type. The

piston o is mounted on the inner end of a plston-rod p which passes through a stufi'- lng-box g andis fastened at its outer end to acrosshead 7'. By meansof the rod 8 the latter is connected to the middle pair a at a point one hundred and eighty degrees from the points of connection of the rods m. Hence, as is clearly illust-rated in Fig. 1, when the inner piston 0- is at the end of its the outer orcylinder-piston i is at theend of the latters travel in the opposite direction. In this position the inlet ports 03 of the cylinder proper a register with the inlet ports j of the cylinder-piston z; and.the exhaust 'ports is of the latter are in register or fair with the-exhaust ports f of the outer cylinder a. In case the engine is used as an explosion or internal combustion motor, the waste products of combustion will be driven piston i'by the fuel the inlet ports 9'.

of the crank-disksthe position shown inlet and exhaust the outer piston 73 makes its forward stroke and the inner piston its return stroke, the charge will be compressed in tween the rear faces of the Further movement of the latter in'the same which enters through '22,, the

directions results in bringing the inlet ports e of the guide cylinder a into register with of the cylinder-piston 2' ports of the same into exhaust ports f of the and 'the exhaust register.- 'with the ide cylinder .at the front end thereof (leftand endin Figs. land 3 Suitable-igniters t may 'beprovided and the action. of

explosion at thee-same timed to produce an any desirable predetermined time, all ma manner well known to those skilled in this ing fluid may be use to drive myune'w travel in one direction,

out of the cylinder-.

pon further movement.

s am or other work-y 3, in which the ports are closed and, as-

the space bepistons 71,0.

In Fig. ,5 the exhaust ports f, f" of the guide cylinder are located near the mid dle thereof and thereis only a single ex: haust outlet 71., with which the exhaust ports is in the cylinder-piston iare brought into communication through' the exhaust ports f, f and which leads only away ;from the engine. Further, in the en:

glne lllustrated in F ig. 5, the cylinder-piston z" is connected by therod. m, with the crank disks 7)., while the'inner piston o is connected by the rod p with the crankdi sks n," at the endof the engine opposite from the cranks n. Thus, it will be seen that drive sepathe latter type which exemplifies this invention as thereto ape.

plied. The guide-cylinder. a is formed with only one serles e of inlet or admission ports and one series f of exhaust ports. lhe cylinder-piston i is open at-one end to allow the pitman p, whlch is ,pivotally 3 connected to the inner piston 0", to pass.

Of course, the cOnnectmg-rods m might with perfect ease be linked to the rear face ofthe cylinder-piston 2", instead of to its front face as shown in ig. 7. Theuse of radial por as hereinbefore described, enables me to o tain alarge area in the aggregate, while maintaining the area of the individual port small. Free admission and free exhaustresult from this provision of a large total area. i For the same length of piston stroke, greater power can be obtained frolnmy new engine by the use of the two pistons one ithin the other and bothmovable. For the same length of piston stroke, the ex pansion is twlce'as great as in the ordinary engine, whereby an increaseinefiiciency is.

ig. 7 is designedto ports of said guide-cylinder.

realized. Since the pistons producing compression move toward r each other, the

compression is greater ,in my new engine for the same piston, travel (71.6., travel of one piston). It is to be observed that the cylinder-piston 71; serves 'real-ly'as a valve which controls admission and exhaust.

No special reversing mechanism is needed to reverse my new engine; it ,is necessary only to start theeng-i'ne in the'direction in which it is. to move, which may be done, of

course, by turningthe fly-wheel in the (le sired direction. I v

WhileI have herein shown my new engine adapted for use as a, double' acting. two-- cycle internal combustion motor, yet it may be arranged without the exercise of more .than the mechanical skill of. the art to oper- 1 ate as a four-cycle-engine.

I claimi Anengln'ehaving a pair of pistons one ports being substan- 3 ting device connected to one end of saidh'ole low piston;v and a power-transmitting, d e'-" posite end of the latter and is connected" to the other of saidpistons-slidably mounted therein; said hollowv pistonbein with centrally-disposed j inlet a I? vice which. passes slidably through the op ports arranged to be brought into register respectivelyywith the, inlet :Iil testimony whereof I hereunto hand in the presence ofthetwo'undersigned I' witnesses at -Boston Massachusetts, thisj 85" in second day of November, 1910.

JACKSON G. C Witnesses; j Enwann CAnrnn'rnn,- fwnm rlflfiwam.

of"whi ch is hollow and closed at both its ends and within whichis mounted the other of said pistons; a stationary guide cylin-r derfor'med a pair of inlet ports and a, pair- '70 I of exhaust ports, said I and exhaust;

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