US1744218A - Engine - Google Patents

Description

Jan. 21, 1930. H FORD 1,744,218

ENGINE Filed April 15, l928 77 1NVENTOR- 16 19 30 W M. BY 6121M:

ELEM.

ATTORNEYS Patented Jan. 21 1930 HENRY roan, or nmnnorm, MICHIGAN, essrenonro roanmoron COMIB'ANY, or

DEARZBORN, MICHIGAN,

AOORPORATION or DELAWARE ENGINE Q Application filed April 13,

invention is to provide The object of my durable and inexpensive an engine of simple, construction.

Still a further object of my invention is to provide in connection with an internal combustion engine, means for counteracting the harmonic unbalanced inertia forces to prevent imparting vibration to the frame of the motor vehicle.

Still a further object of my invention is to provide a counter weight associated with the engine which will tend to damp out the vibrations of the engine caused by the harmonic unbalanced inertia forces.

1 Still a further obje'ct of my invention is to provide in connection with an internal combustion engine a counter v weight suspended on a spring or yielding device so that a vertical plane coinciding with the resultant of the harmonic unbalanced forces, will pass through the weight, and so that this weight may be permitted vertical reciprocation to damp out the vibration which corresponds to said forces.

With these and other objects in view my invention consists in the arrangement, construction and combination of the various parts of my improved device as described in the specification, claimed in the claims, and illustrated in the accompanying drawings, in which-'- a Figure 1 shows an elevation of an engine constructed in accordance with my invention, parts of the crankcase and flywheel housing being broken away to better illustrate the construction. a

Figure 2 shows a longitudinal vertical central sectional view through the crankcase of the engine. Y

Figure 3 shows a View taken at right angles through Figure 2, on the line 3-3 and Figure 4 shows an alternative form of m improved device.

Referring to the accompanying drawings, I have used the reference numerals 10,11, 12, 13 and let to indicate the flywheel housing, the crankcase, the oil' pan, the cylinder block, and the cylinder head of an ordinary internal combustion engine of the four cylthe counterbalance weight 19 is vertical range 1928. Serial No. 265360. I

inder type. The oil pan has a sump in the bottom thereof containing the oil 15.

A long leaf spring 16 of any suitable material has either end thereof rigidly secured to thefcrankcase in any suitable means as by rivets 17. This spring has its ends located at, or adjacent to the front and rear ends of the oil pan 12, the intermediate portion of the spring being spaced upwardly away from the floor of the oil pan 12 so as to permit vibration of the central portion of the spring as is indicated by the dotted line 18 in Figure 2. a

Secured to the center of the spring 16 is i the counterbalance 19 which is held in place in the form of device here shown by cap screws 20 which pass through the spring 16.-

In the form of device illustrated in Figure 4 a similar construction is used except that disposed below the oil pan 12 insteadof in the oil pan 12 and in the oil 15.

The ordinary four cylinder-internal combustion engine is'such that. the rotation of the crankshaft andreciprocation of the"pis-.

tons and connecting rods varies the center of gravity of these moving partsthrough a of a predetermined amount depending on the stroke of the pistons. This reciprocation of the center of weight of these moving parts creates what is termedthe harwhich causes the engine to vibrate. With my improved device, this vibration tendency of. the engine is transmittedto the counterbalanced weight 19 which is mounted for'yielding vertical reciprocation on the spring 16 whereby the inertia of this counterbalance set up by the. harmonic unbalanced inertia forces thereby making the mitted to a vehicle frame unobjectionable.

It will be noted that when the counterbalance weight 19 is mounted in theoil pan 12,

.monic unbalanced inertia force in the engine 1 weight may dampen out engine vibrations l vibration transproper weight and dimensions to counteract the forces of any particular-engine and this exact weight has to be determined by experimentin with different weight or counter bal- 5 anced evices. For instance the counterbalance for experimental purposes may be made of a plurality of washers bolted together and these washers may be added to or subtracted from until the proper counterbalance weight 10 has been determined b actual test.

Some changes may e made in the mounting of this counterbalance weight providing it is so mounted that it is allowed recipr0- cation in a vertical plane and is yieldingly 15 mounted. The dampening effect of this weight may be further enhanced by mounting it in such a way that an energy absorbing or friction device may effect its movement relative to the engine. It will be noted that this counterbalanceweight gives the best re-. sults when rotated with its center of weight laying near the intersection of a plane bisecting a plane extending between the axis of the two end cylinders.

' Among the many advantages which are derived from" the use of my improved device, it should be pointed out that this furnishes an automatic device without any. rotating parts which tends to check the vibration imparted 3 by the engine to the frame and which will flast indefinitely. It is also cheap and economical to construct.- I v Some changes may be made in the arrangement construction and combination of the va- :5 rious parts of my improved device without,

departing from the spirit of my invention and it is my intention to cover my claims such changes as mayreasonably be included within the scope thereof. o I claim as my invention:

4 1. In a device of the character described, an internal combustion engine having a crankcase, a leaf spring mounted therein adjacent to the ends of said crankcase and extendin therebetween, and a weight mounted on sai s ring intermediate'of the ends thereof where y said'weight may be mounted for vertical reciprocation within the engine; 2. In a device of the character described,

- 6 an internal combustion engine having a crank case, a leaf sprin longitudinally mounted in said crank case or vertical reci rocation, a weight secured to said spring, e center of gravity of said wei ht substantially coincidin with the path 0 the resultant of the unba anced inertia forces of the an m.

' i FORD.

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