US1427788A

US1427788A - Connecting rod

Info

Publication number: US1427788A
Application number: US520887A
Authority: US
Inventors: Drevitson Carl Bruno
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-12-08
Filing date: 1921-12-08
Publication date: 1922-09-05
Anticipated expiration: 1939-09-05

Description

Patented Sept. 5, 1922.

Fir... 1

CIB. DREVITSON. CONNECTING ROD. v A APPLIcmoN man nanfa. 192|`- 1,427,788.

Patented Sept. 5, 1922.

UNITED STATES PATENT OFFICE.

CONNECTING ROD.

Application filed December 8, `1921. Serial No. 520,887.

To (Zlwmm t may concern:

Be itknown that I, CARL B. DmevrrsoN, a

`citizen oi the United. States, residing at Somerville, in the county ot' Middlesex and State ot Massachusetts, have invented new and useiul Improvements in Connecting Rods, of which the following' is a specification.

This invention relates to a connecting-rod pivotallf,Y connected at its outer end to a piston in the combustion cylinder of an internal combustion engine, and connected atits inner end rwith a bearing surrounding the wrist portion of a crank-shaft.

The object of the invention is to provide a connecting-rod ot simple and durable construction, adapted to yieldingly cushion the direct blow on the crank-shaft caused by the combustion or 'explosion of a charge of gaseous material in the cylinder, in such manner as to reduce wear on the bearing, and eliminate shocks or jars, so that the engine will run quietly and smoothly.

rl`he invention is embodied in the improvements hereinafter described and claimed.

Oi' the accompanying drawings forming a part of this specification,-

Figure "1 `is a view showing in section a piston and a `portion of a crank-shaft, and partly in elevation, and partly in section, a connecting-rod embodying the invention.

Figure 2 is a section on line 2 2 of Figure 1. c i

Figure 3 is a section on line 3 3 of Figure 1. l y

Figure f1 is a fragmentary perspective view, showing portions of the connectingrod and bearing, said portions being connected.

The same reference charac-ters indicate the same parts in all ofthe figures.

My improved connecting-rod is adapted to connect the piston 12 and the wrist 13 of the crank-shaft of an internal combustion engine, the rod being pivotally connected at one end with the piston, and provided at the opposite end with a bearing surrounding the wrist 13.

The connecting-rod includes an elongated rigid body 14C, preferably formed in cross section, as shown by Figure 2, and provided at one end with a rigid member 15, forming an element of the usual7 or any suitable onepoint pivotal connection between the rod and the piston, permitting the rod to oscillate as usual, and conform to the revolving movement of the crank-shaft wrist.l

The body 14 is provided at 'its opposite end with means forming a resilient twopoint connection between the body and the crank-shaftbearing, adapted to yield sufiiciently to cushion the blow or a-bruptpressure on the bearing and crank-shaft, caused by the combustion of a gaseous working agent in the cylinder containing the piston. Said two-point connection is preferably provided by forming on the inner end ofthe body 141, two extensions 1G, which are integral withthe body, and constitute elbowshaped springs, rigidly connected at their outer ends with the ears 17 on a part or member 19 of a two-part bearing. The connecting-rod is, therefore, bifurcated at itsl inner ends, its furcations being resilient. The said extensions and the said bearing member may be rigidly connected in any suitable way. For example, the extensions may be formed integral with the bearing member by a drop-forging operation, the body 17, its extensions, and the bearing member and its ears being formed as asingle piece or forging.

The 'form of the two-point connecting means and the body 14 is such tliatthe bearing member 19 is separated from the inner end of the body by a space or recess2l, which receives a portion of the bearing, and permits Van independent endwise movement of the body 19, without contact of its inner end with the bearing, said recess extending across the bearing, so that the body 14 is connected with the bearing at two points,

one at each side of the axis of the bearing. i

A bloW or shock on the piston is therefore yieldingly transmitted to the bearing and the crank-shaft by two springs, one at each side of the longitudinal center of the body 14, so that the strain is distributed between the Springs, and liability of the Seeing or l the springs 1s avoided.

The crank-shaft bearing may include a. member 22 complemental to the member 19, the members being detachably connected as by bolts 23.

I claim:

1. A connecting-rod comprising an elongated rigid body, having at one end a rigid member forming an element of a one-point pivotal connection between said body and a piston; and at` its opposite end a crankshaft 1caring member, and ieans forming a resilient two-point connection between the body and the said member, said means being integral with the body and. the bearing member, and adapted to space the bodyh from the bearing member.

2, A' connecting-rod comprising,` an elongated riqid body, having` at one end a rigid member forming an element oi"- a one-point pivotal. connection between said body and a piston; and at its opposite end a cranksha'li't bearing` member and a pair ot oppositely projecting resilient extensions itorming a resilient twofpoint coroiectionv between said body and bearing)` member, and adapted to space the body from said member, said bearing` member and eXtensions being` integral with the body.

3. A connecting-rod comprising,` an elon-r gated rigid body, having atone end a rigid member rorming anzelement of a one-point pivotal connection between said body and a piston, the opposite end of said body having a crank-shaft bearing member' and resilientI means forming', with the body, a recess adapted to receive a portion of said bearing member, said resilient means forming a two-point connection between the body ndthe bearing` member, andadapted to `space the body from said member, said bearing` member and resilient means being integral with the body. i

il, A one-piece connecting-rod comprising an elongated rigid body, having` at one end anintegral member forming an element ot a one-point pivotal connection between said body and a piston; and having at the opposite end, integral resilient means ibi-ming` ,a resilient two-point connection between the body and a crank-shaft bearing, and 'forming, with the body, a recess adapted to receive a' portion oi' the bearing, said twopoint connection being adapted to space the body from the ,bearinm y 5. A connecting-rod comprising an elongated rigid body portion, and a bifurcated lower end portion, the nrcations of which are resilient, and form a resilient two-point connection between the body portion and a crank-shaft bearing, adapted to space lthe body portion from thel bearing, the opposite .end of the body portion ha 7ing,` a rigid member forming` an element of a one-point pivotal connection between the body portion and a piston.

6. In a connecting-rod, in combination, a crank-shalt bearing, and an elongated rigid rod body, having at one end a rigid member forming; an element ot a one-point pivotal connection between the body and a piston, and atA its opposite end means resiliently connecting; the body with the bearing; at two points, 4one at each side of the bearing, said means spacing` the body from the bearing.

i?. In a connecting-rod, in combination, a crank-shaft bearing, and an elongated rigid ,rod body, having at one end a rigid member 'ormiimjv an element of a one-point pivotal connection between the body and a piston, andat its opposite end a pair of oppositely projecting resilient extensions,

forming a resilient two-point connection between the body and the bearing, and spac- .inn` the body from the bearing.

S. ln `a connecting-rod, in combination, crank-shaft bearing, and an elongated rigid rod body, having at one end a rigid member formingl an element of a one-point pivotal connection between the body and a piston, and at its opposite end a pair of oppositely projecting resilient extensions, forming a resilient two-point connection between tho body with the bearing, and spacing` the body from the bearing, said extensions forming,` with the body a recess receivinn` portion of the bearing, and spacing the body trom the bearing. n

ln testimony whereof I have alixed my signature.

CARL Benno nnnvrrsoN.