US945738A - Starter for gas-engines. - Google Patents

Description

F. BARMSTRNG. STARTER FOR GAS ENGINES. APPLICATION FILED MAY 10, 1909. t

Patented Jan. 11,` 1910.

.A ,am l n1 4 wn-Nessls FRANK ARMSTRONG, or vUncAN, iwroHrGAN.

STARTER FOR GAS-ENGINES.

Specification of Letters Patent.

Patented J an. 11, 1910.

Application filed May 10, 1909. Serial No. 494,970.

To all whom it may concern:

Be it known that I, FRANK H. ARMSTRONG', a citizen of the United States, residing at Vulcan, in the county of Dickinson and State of Michigan, have invented-certain new and useful Improvements in Starters for Gras of apparatus of this character; the provision.

of an apparatus adapted'to supply a plurality of engine cylinders with uniform charges; the provision of an apparatus which `nay 'be cheaply applied to the ordinary gas engine; and the provision of an apparatus wherein a very elfective atomization o f the particles of liquid fuel is secured com ned with a thorough and proportionately' correct mixture or' the fuel and'air. One ernbodiment of the invention is illustrated in the accompanying drawings, wherein Figure l is a longitudinal section through the device on the line I-I of Figure Figure 2 is a longitudinal section through the device on the line II-II of Figure 3, and

Figure 3 is an elevation ofthe right hand end of the cylinder of Figures l and 2.

Briefly stated the device comprises in the form illustrated, a cylinder, a delivery pas sage leading from theside of the cylinder to an engine cylinder which is to be charged,

a manually4 operable piston in the cylinder vprovided with a longitudinally extending passage-way having a part'thereof adapted during the stroke of the piston to register with the delivery passage, a fuel nozzle in alinement with the passage-way,and means for forcing a stream of fuel through` the nozzle as lthe piston moves forward. In the present instance the last `mentioned Ymeans is a separate piston and cylinder, butthe invention comprehends other means as well. A check valve is provided in the front portion of the cylinder, so that on the forward movement of the piston the air compressed in front .thereof is forced through the passage-way together with the stream of liquid fuel, thus securing the necessary explosive mixture.

Referring to the general arrangement of parts as shown in Figures l and 2, the principal parts may be enumerated vas follows;

diameter of the 1 is the cylinder, which is conveniently lo-l cated'withr'- respect to the engine cylinders (not shown); 2 the piston fonthe cylinder, which is m e substantially hollow in order to lighten `th device; Sis an 'auxiliary cylinder (Fig. 2), in the present instance integral with the cylinder 1; 4 is a pistou for the cylinder 3; 5 isthe fuel supply pipe by means of which fuel is conducted to the cylinder 8; 6 is a passage'for conducting the fuel from the cylinder 3 to the passage 8 in the piston 2;'7 is the nozzle of the connection 6, by meanstf'which'a fine stream of fuel is injected into the passage-way 8 in the piston 2; 9,10, 11 and'12 are delivery pipes leading from the cylinder 1 to the four engine cylinders, which delivery pipes are provided with the valves 13; and 14 isy an operating rod connected to the handles of the valves as illustrated in Figure 1, whereby they'may be simultaneously operated.

The piston 2 is` provided at its rear end with a' rod 1'5, and this rod is secured'tothe piston 4 by means of the connecting bar 16 1n the manner shown, such bar 16 serving as a handle whereby the Atwfo pistons may be simultaneously operated lin the same direc-- tion. The cylinder 3 is provided with a. stuffing box 1T at its rear end, and an outlet 23 is provided atthe rear end of the cylinder 1 (Figure 2) in order to permit the free escape of air f-rom the cylinder as the piston 2 moves to the left. A ball -spring held check-valve 18 is provided at thefront end of the cylinder` 1, whereby air enters freely upon the rearward movement of the piston 2, butis prevented from escaping on the forward movement thereof. lA ball check-valve 19 is also provided in the passage 6, such valve being spring-held closed,

and permitting a flow from the cylinder 3 to the/nozzle 7, but preventing any reverse flow. The ball check-valve 2.0 prevents any back flow through the supply pipe 5. The passage-way 8 (Figure 1.) is

slightly greater thanl thatV of the pipe 7 so.

that a flow of air may occur intermediate the periphery ofthe pipe 7 and the wall of the passage-way 8. y l

.Assuming that the parts lare in the posi? tion occupied in Figures 1 and 2, and that the cylinder 3 contains a charge of liquid fuel supplied from the pipe 5, the operationv -in introducing a charge of explosive through the pipes A9, 10, 11 and 1.2,to theengine cylinders is as vfol1ows. The handle. 14- -is 4in its stroke to first operated to open all of the valves 13, l and the handle 16, and the pistons 2'and 4lv operated thereby are then thrust vigorously forward from the position indicated in F igure 2. The liuid in the cylinder 3 is forced l through the passage 6 and the nozzle 7 into l the passage-way 8, `the fine stream striking l the wall at the rear end of the passage-way l and being atomized to a large extent.` At the same time the air compressed upon the front side of the piston 2 is driven `rearwardly through the passage-way 8 intermediate the walls thereof andthe outer surface of the nozzle 7 at a high velocity, the

force of this air assisting still further` in vaporizing the liquid fuel fromthe nozzle and a thorough mixture is secured in the rear end of the passage-way. A certain amount of compression is attained in cylinder 1 and passage-way 8 before the portion 22 of such passage-way comes opposite the end of the pipe 9, so that avsupply of fuel in the .part 22 is insured and a sharp and effective flow of the explosive mixture occurs when registry between the portion and the end of the pipe 9 occurs. The pipes 10, 11 andv 12 are similarly supplied, as the piston2moves toits extreme forward position, so that a proper amount of explosive mixture is furnished to each engine cylinder. Before ignition in the engine cylinders, the valves 13 are closed by means of the handle 14 in order to protect the cylinder 1 and its parts from the pressure induced by the explosions of the cylinders. l

It will be seen from 'the foregoing that the vapparatus is lextremely simple, and may be constructed at a small cost, also that certainty of al good mixture is insured, and a vigorous flow of the explosive. mixture through the delivery pipesds provided for, as the portion 22 of the passage-way 8 registers therewith. The apparatus is obviously capable of use in any desired position, and

may be applied to'engines having any numbei' of cylinders. Various other advantages l incident to the construction will-be apparent to those skilled in the art.

Having thus described my invention and illustrated its, use, what 'I claim asnew and desire to secure by Letters Patent is the following y 1. In an engine star ter,.a`l cylinder, a delivery passage leading 'from the side of the cylinder, a piston in the cylinder provided with a passageway and adapted at one point f register 'with the delivery? passage, and means operated by the forward movement of the piston for forcing an explosive mixture through. the passageway and thence into the delivery passage.

2. In an engine starter, a cylinder, a plurality of delivery passages leading, from the side of the cylinder, a piston in the cylinder provided with a passageway adapted duri means for forcing -inder, a longitudinal ing the forward movement of the piston to register successively with the delivery passages, and means operated movement of the piston for forcing an explosive mixture through the passageway and thence into the delivery passages.

3. In an engine starter, a cylinder, a delivery passage leading from the side of the cylinder, a piston in the cylinder provided with a longitudinal passageway having a part adapted at one point of the stroke of the piston to register with the delivery passage, a nozzle in alinement with the passageway, means whereby air is admitted'to the front end of the cylinder, and means for forcing a stream of fuelthrough the nozzle as the piston is moved forward.

4. In an engine starter, a cylinder, a delivery passage leading from the side of the cylinder, a piston in the cylinder provided with alongitudinal passageway having a part adapted at one point of the strokeof thel piston to register with the delivery pas-` sage, a tube projecting into the passageway with a space `intermediate, the pipe andpassageway for the pressed in the front end of the cylinder, and a stream of fuel through the tube as the piston is moved forward.

5. In an engine starter, a cylinder, a delivery passage leading from the side of the cylinder, a piston in the cylinder provided with a longitudinal passageway having a part adapted at one point of the stroke of the piston to register with the delivery passage, a tube projecting into the passageway with a space intermediate the pipe and passageway for the passage of the air compressed in the front. end of the cylinder, and a pump for forcing a stream of fuel through the tube as the piston is moved forward, said pump being connected to operate` in unison with the said piston.

6. In an engine starter, an air cylinder, a fuel cylinder, a pair of pistons forthe cylinders, connected to move together, a delivery passage leading from the side of the by the forward mitting air to the front end of the air cylfrom the front end of side thereof and adapted to register with the delivery passage. a the passageway with a space intermediate the pipe and the passageway for the passage of the air compressed in the front end of the cylinder, and acommunication between the fuel cylinder and the tube.

passageway leading the air piston to thev tube projecting into v In testimony whereof I have hereunto signed my name iu the presence of the two Subscribing witnesses.

If. H. ARMSTRONG. `Witnesses IVM. STANAWAY,

IVM. H. DANE.

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