US232987A - linfobd - Google Patents

Description

(No Model.) 4 sheens-sheet 2.

C. LINFDRD.

l Gas Engine. No. 232,987. YPa ented Oct. 5,1880.

(No Model.) 4 Sheets-Sheet 3.

C. LI'NFORD. Gas Engine. 1 No. 232,987. Patented Oct. 5,1880.

l 17g/. Egg. d

IIIMMHHHHIHI HHHHH IHHH Wzlzze: i [7u/62@ Zaza ,ad/ (57% 6720/5. Zin/fard i (No Model.) I 4Sh t -Sh t4.

- C. LINFORD. ee s ee l Gas Engine. No. 232,981. Patented ocr. 5,1880.

Unirse Smarts Retenir raise.,

CHARLES LINEORD, OF LEIGESTER, ENGLAND.

GAS-ENGINE.

SPECIFICATION forming part of Letters Patent No. 232,987', dated October 5, 1880. Application led September 3, 1880. (No model.) Patented in England April 17, 1870, and January 24, 1880.

To all whom it may concern Be it known that I, CHARLES LINFORD, a subject of the Queen of Great Britain, residing in Leicester, England, have invented new and useful Improvements in and connected' with GasEngines, (for which l have obtained patents in Great Britain, No. 1,500, bearing` date April 17, 1879, and No. 330, bearing date January 24, 1880,) of which the following is a specification.

This invention relates to and consists in a novel arrangement of appliances which, in double-acting engines, give an impulse to each one and a halt' revolution of the crank-shaft, and in a single-acting engine one impulse to every three revolutions of the crank-shaft. This is effected in the following manner: l admit a charge of gas and air as a combustible body during the travel of the piston or pistons in one direction. ,I compress the said charge (gas and air) during the return-stroke of the piston or pistons. I tire the said charge during the next travel of piston or pistons. I exhaust the residues of combustion during the next travel ot' the piston or pistons. I admit a distinct column or currentof atmospheric air fromthe atmosphere and free from any admixiure of gas during the next travel of the pis` ton or pistons, and then I exhaust the said column or current of atmospheric air during the next travel of the piston or pistons, before the next body of gas and air is admitted to the cylinder or cylinders, the admission and emission of the distinct column or current of the atmospheric air into and from the cylinder or cylinders after and following each exhaust of the residues of combustion being to scavenger or wash out any debris or refuse portions which may be left in the cylinder or cyl inders after the usual exhaust of the spent explosive charge, said distinct current of air being' sucked into and discharged from the cylinder by the working piston or pistons without the aid of pumps or other extraneous appliances or apparatus for charging the cylinder with said air. I attain this object bythe mechanism illustrated in the accompanying drawings, in which- Figure l is a right-hand side View; Fig. 2, a left-hand side View 5 Fig. 3, a transverse section through the cylinder of atwo-piston balanced gas-engine of my invention, Figs. 4, 5, 6, and 7 showing the slide-seating, the slide, and the slide-cover on a'larger scale. Fig. 8 shows a sectional view of the exhaust-box and its valves. O

I tit on the side of the slide-valve seatingor adjacent thereto a box, A, containing a valve, B, Figs. 1, 4, 5, and (i, which valve isset open, that atmospheric air may freely pass into the port C ofthe slide D and the mixingvchamber E, and mix with the gas as it enters the main port F from the gas-supply G, which is controlledby the cone H under the action of the tappet and levers I from the cam J on'the second-motion shaft K, the movement of the slide D, by its connection with the beam M and rod Nfrom the second-motion shaft K, shutting off the port C when sufficient air has passed into the chamber E.

The port F terminates in a pipe, P, with openings top and bottom for distributing the explosive charge well within the cylinder.

The box A has its air-supply pipe Q formed as a branch from the main air-pipe R, this terminating in a bell-shaped apparatus, S, at tached to the side of the engineframing T.

The bell-shaped apparatus shown in section at Fig. 9 has within itaconical partition with a clearance around its edge, that atmospheric air may enter the pipe It by the nozzle U, as indicated by the arrows.

The pistonsVV having been moved apart by the action ofthe beams WV W and rods X X from the cranks of the first-motion shaft Y for the admission of the explosive charge into the cylinder Z, they return, under the momentum ofthe liywheel a, to compress the charge within the tiring-chamber b, and as they commence their return-stroke the charge is tired by the ignition of live gas supplied by the pipe c, which comes into contact with the outside flame, d, from the pipe e when the cavity f of the slideDand I--shaped aperture hare brought down to coincide with the angled slot g of the cover, Fig. 7, the slot then forming a communication by the through-aperture h of the slide D to the port C,as shownby Fig. 5.

The pistons, having received their impulse under the expansion of the exploded charge, return to force the residues of combustion through the exhaust-boxt' and pipe j, the valve IOO 7c (see sectional view, Fig. l0) opening for that purpose under the action of the tappet l and cam m on the second-motion shaft K. The cam m extends to nearly one-half the circumference of second-motion shaft K, as shown by Fig. 2, that the valve 7c may remain open during the next out-travel of the pistons VV, the slide D at the commencement of this outtravel of the pistons moving down to open the passage a, with the port C, as shown at Fig. l0, for the inflow1 of clean atmospheric air to the cylinder, in this action the gas-supply being shut off. A further supply of clean atmospheric air passes also into the cylinderI by the pipe p and exhaust-box t', the valve q bein g lifted and opened and the exhaust outletvalve r closed by the outward sucking action of the pistons. The cylinder by this means be comes filled with clean atmospheric air, which on the next or return stroke of the pistons is forced out through the exhaust-pipe j, the valveq becoming closed andthe valve r opened under the internal pressure. At the return ofthe pistons for the exhaust of the clean atmospheric air the valve B instantly closes, and insures the passage of the air through exhaust, together with any particle of the previous residue of combustion which may have remained in the tiring-chamber b after the last primary exhaust.

The particular formation of the through-ap# erture IL in the slide D, in conjunction with the angled slotg in the cover, is an important feature in my invention7 because all back-dash of the fire at the instant of explosion is prevented, the slide by its movement carrying the ignited inner iame in the slide so suddenly past the opening Where it received its ignition from the outer flame d.

The second-motion shaft K receives its rotation by the three-to-one gearing s, the governor t, as in an ordinary steam-engine, regulating the speed.

u u are the water-jacket pipes.

I have particularly described my invention as applied to a two-piston gas-engine; butit is obvious that I can employ my details-namely, the valve B in the air-supply leading to the slide, the peculiar or E`shaped through-aperture 71l in the slide, andthe angled slot g in the slide-cover-in other constructions of gas-engines, wherein I can, by a tlnee-to-one arrangement of gearing and cam actions, substantially as hereinbefore described, admit a distinct current of clean atmospheric air into and discharge the same from the cylinder after each exhaust of the residues of the ordinary combustion and before the admission of a fresh charge of combustible gas, as herein set forth.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a gas-en gine, the hinged set-open valve B in the air-supply Q, leading to the slide D,

substantially as described.

2. In a gas-engine, the i'shaped throughaperture h in the slide, in combination with the angled slot g in cover, constructed and arranged substantially as shown and described.

3. rlhe combination, with the valve B in the air-supply, formed as shown, of air-chamber C and mixing-chamber E in slide D, as and for the purpose set forth.

4. rIhe live-gas aperturef and channels leading therefrom in slide D, arranged as shown at Fig. 6, and for the purpose described.

5. The cam m on second-motion shaft K, in combination with tappet Z, for keeping exhaust-valve 7c open for ordinary exhaust and during admission and emission of scavenger charge, substantially as described.

6. In combination with an exhaust-box of a gas-engine, the valves 7i: q r, arrangedA substantially as shown and described.

7. In a gasengine, the mode of using the air-passages in valve seating and slide D, for supplying a scavenger charge, substantially as described.

S. In an air-engine, the attachment to the air-feed, consisting of pipe It, with bent nozzle U, and the eonoidal partition with clearance, arranged substantially as shown and described.

9. rIhe two-holed distributing-pipe I), arranged in the two-piston gas-engine herein described, constructed substantially as shown and described.

l0. The balanced two-piston gas -engine, with the several appliances, arranged as shown and acting in the manner described, whereby a distinct charge of clean air is admitted to and expelled from the cylinder by the Working-pistons to scavenger said cylinder after each ordinary exhaust -of the residues of conibustion, substantially as described.

In Witness whereof I have hereunto signed my name in the presence of two subscribing Witnesses.

CHARLES LINFORD.

Vitnesses: y

HnNRitT GARDNER, RrcHARD GORE GARDNER.

IOO

Images