US1148774A - Internal-combustion engine. - Google Patents

Description

E. R. HEWITT & A! F. MASURY.

INTERNAL COMBUSTiON ENGiNE. APPLICATION FILED 0CT.16.19I4

1,148,??4 Patented Aug. 3, F515 2 SHEETS-SHEET I TTORNE Y 6 E. R. HEWITT & A. F. MASURY.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED OCT. 6. 1914.

1,148,774 Patented Aug. 3, 191 5.

2 SHEETS-SHEET 2.

A TTOR/VEYS E R. HEWITT, OF MIDfiALE, NEW JERSEY, AND ALFRED F. MAS'URY, OF NEW YORK, N. Y., ASSIGNORS TQ QTERNATIONAL MOTOR- COMPANY, OF NEW YORK, N. Y., A. GQRPORATION OF DELAWARE.

iia'rnmmn-coivrsiisrron ENGINE.

' To 'whomc't mayconcem Be it known that we, EDWARD R. HEWITT and ALFRED F. MASURY, citizens of the United States and residents of Midvale, in the State of New Jersey, and of the city of New York, in the State of New York, respectively, have invented certain new and useful Improvements in Internal-Combustion Engines, of which the following is a specification, reference being had to the accompanying drawings, forming a part hereof.

This invention relates to internal combustion engines and has, for its general object the improvement of the crank casing of such engines and the simplification of the gearing for the auxiliary elements of such engines, such as the water pump, the magneto,

' adjustment to change etc., so that the gearing is made more accessible than heretofore, is less liable to injury or derangement and is susceptible of ready the relative phases of operation of the various parts with respect to each other. f

[A further ob ect is be late the initial cost of manufacture of theengime crank casing by eliminating much v offgthe machine work which is necessary casings now known and by forming the bearings for the crank shaft, the cain shaft, and the like, in a single cap which his fastened detachably to.

the crank casing and constitutes part of the front wall therefor.

- In a similar manner, the present invention proposes to form the driven auxiliary elements, such as the water pump, the magneto, and the like, as a single unit, andso related each to each as to permit their actuationfrom a common shaft.

These and other objects will appear hereinafter as this description proceeds, the invention being concerned broadly with many other features ofengine construction tending to effect the general objects referred to above,

Reference is now to be had to the accompanying drawings for a detailed description of the illustrated embodiment of the invention.

In the drawings-Figure 1 is a fragmen f tary view in front elevation of an internal combustion engine embodying the invention the cam shaft and. the

cylinders on the crank casing.

'neto. Fig. 2 is a fragmentary view, partly Patented Aug. 3, i9i5.

Application filed October 16, 1914. Serial No. 866,897. I i

in vertical section and partly in side elevation, of the engine illustrated in Fig. 1 and showing particularly the simple and compact relationship between the parts thereof. The body portion of the crank casing a may be of the usual form and for this reason it has been deemed unnecessary to show all of it, the present lmprovements being found 1n the construction of one end only of the crank casing, as, for instance, the front end thereof.

Egr'thermore, the present improvements are concerned with the construction of the usual engine cylinders, one of'which is indlcated at b, or the mode of mounting such pose of this description, however, it has been deemed desirable to indicate that the usual crank shaft 0 is driven through one or more pitmans '0: extending from the usual pistons (not illustrated) "arranged within the respective *cylinders. The crank shaft 0 may find its principal bearings a carried by the crank casing a toward the front end of the latter. Gn the extreme forward end of the crank shaft 0 thereis secured, in the present invention, a gear 0 which has its tie5e th cut along an angle of substantially With gear 0 meshes a similar gear d which is keyed on the cam shaft d, one of the bearings a of which is formed in the crank case a. It is through the engagement ofthe gears c and d that the cam shaft d receives its rotative movement from the crank shaft 0. This rotative movement, in

.the improved engine, is further transmitted ,from the gear d to a shaft 6, as through anatively to two of the usual auxiliary elements of an internal combustion engine, namely, a water pump f and a magneto g. The construction described constitutes, in eflect, a unit construction, as regards the water pump and magneto 9, although it is to be noted that the shaft 6 is detachably coupled, as at it, to the shafts v7" and g of the water pump 7 and the magneto g respectively. The up per well of the crank casing a is cast with an For the purv with the said gear on the cam shaft.

opening through which the gear d extends to objects of the invention has been realized by simplifying the construction and relationship of the gearing and the auxiliary elements, such as the magneto and the water pump, driven thereby, by mounting the gearing adjacent the front end of the crank casing and by having a gear on the cam shaft enmeshed directly with a gear on thecrank shaft, and by providing a single drive shaft for the water pump and the magneto on which is afiiXed a gearalso directly enmesiied ot only does this construction cheapen the cost of manufacture and minimize the liability of the mentioned parts to injury and derangement, but it also facilitates the assemblingof all of these parts and the ready repair or replacement of any one of them.

Another feature of the invention resides particularly in the construction of that portion of the crank casing on which are mounted the improved elements hereinbe fore described. In carrying out such improvements to the crank casing, it has been sought to reduce as 'far as possible the the crank casing a has an opening formed in its front wall to permit access to the in- .terior' of the casing and the edge of this opening is machined, as ata to insurethe usual oil-tight union with a cap '5 detachably secured to the front wall of the casing by means of bolts 71', The crank casing (1' also has its upper face machined, as at a,

' e along a single horizontal plane to afford the usual support for the cylinders b and permit the attachment of the gear housing 0 therto, as. through bolts e, and also to which bases pass suitable securing'bolts f and g respectively, into the upperface of the crank casing a.. It appears from Fig.

1 that the cap z may extend slightly above the upper machined edge ofthe casing a and be united with the base a of the gear housin e In all, then, the crank casing a, in so ar asconcerns the mounting of the cylinders, the cam shaft, the water pump, and the magneto, or like parts, need only be machined alongits face to receive the cap 71 and along its upper face to receive the cylindersb and the bases ,1, g and e of the water pump, the magneto, and the gear 7 housing respectively. By disposing the magneto and the Water pump alongside the cylinders space is economized as the height of the cylinders determines the height of the entire motor.

The improved engine provided by the present invention also lends itself to the introduction of a further advantageous feature, namely, the formation of the bearings for the starting crank shaft and the cam shaft in the cap 2', thereby greatly facilitating the assembling of the parts and the inspection of the interior of the casing. It

will be seen from Fig; 2 that. the cam shaft d, or the extension thereof, on which may be'fixed agovernor or other needful elerotation is imparted manually to the crank shaft 0, in a well known manner, is also sup ported inthe said cap. Upon the removal of the cap i,'the gear and other bearings for the crank shaft 0 and the cam shaft 03 may be readily inspected, but itis to be noted particularly that the removal of the cap i and such subsequent inspection or replacement of anyof the parts in the crank casing, in nowise disturbs any of the auxiliary elements, such as the water pump f, and the magneto .g or the driving mechanism there for. Conversely, itmight be pointed out here, that the pump "f, gear housing e and the magneto g, or any one of them, with their respective driving shafts and their common actuating gear e, may be removed readily from their usual positions byremoval of-their securing bolts without disturbing the cap a or any .of' the bearings formed therein. The simplicity of this construction and the ease with which it permits the average mechanic toinspect, repair, or replace, any bearing, shaft, gear, or other element needful to the efficient operation of any of the mechanism described, will commend itself to those skilled. in the art.

The ears'c" and d, by reason of the angular teet thereon, it is evident, may be moved axially along their respective supporting shafts a, d, so as to permit their, removal 4 from said shafts, or'they maybe moved ain'- ally a slight distance so as to change their angular relation to each other and thereby tionship between the respective phases of change to a greater or less extent the relaoperation of the mechanism operatively con- I gear a shim or washer and then resecuring such gear in position on its shaft. No such shim or washer is illustrated in the accompanying drawings inasmuch as the parts are shown in their normal and proper operating relation, but the effect of such a shim, in the position indicated will be obvious.

The compactness of the improved en 'ne and the great economy of space eifecte by the mounting of the magneto and water pump on the crank casing in front of the cylinders, need not be elaborated on, since a' comparison of this construction with those now known will make these advantages manifest.

Changes in the details of construction, rearrangement of the illustrated parts and substitution of other parts for those illustrated, may be made without departing from the spirit of the invention, provided all such changes, rearrangements and substitutions fall within the scope of the appended claim.

We claim as our invention:

In combination, a crank casing provided with an extension at one end and having a slot in the upper wall of the extenslon formed in the front edge thereof, a crank shaft, acam shaft, a gear on the cam shaft engaged operatively by the crank shaft, the gear on the cam shaft being disposed opposite said slot but having its teeth below the surface of the said extension, a magneto and a water pump both mounted on the upper face of the extension and provided with a common shaft, a gear on the common shaft extending through the said slot to mesh with the gear on the cam shaft, a gear housing secured on the upper face of the extension over the slot and the last named gear, a detachable cap" mounted on the end wall on said extension to afford accem to the interior of the casing and permit the gear on the cam shaft to be removed from the casing without disturbing the magneto, the water pump, the driving mechanism, and the housin% therefor.

his specification signed and witnessed this 14th day of October A. D. 1914.

EDWARD R. HEWITT. ALFRED F. MASURY. Signed in the presence of H. M. HENDRIOKSON, M. FRINs.

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