US 1177609 A
Description (OCR text may contain errors)
C. E.. EDWARDS.
MEANS FOR CONVERTING MOTION.
APPLICATION FILED MAR. 27. 1913.
Patented Apr. 4, 1916.
2 SHEETS-SHEET I.
76 A' Suva/nto@ n I l c'. E. EDWARDS. MEANS FOR CONVERTING MOTION. APPLICATION FILED MAR.27.I913.
Patented Apr. 4, 1916,
2 SHEETS-SHEET 2.
' UNITED sTATEs PATENT oEEIoE.
CHARLES E. EDWARDS, or IIIA-NSITELIL OHIO', AssIGNon or ONE-THIRD To WILLIAM E.
I s'osa` AND ONE-THIRD To HOWARD s. TWITCHELI., or MANSFIELD, oHIo.
- Specication of Letters Patent.
MEANs For. CONVERTING MOTION.
Patented Apr. 4, 1916.
Application led March 27, 1913. Serial No. 757,232. y
4and useful Improvements in Means for` Converting Motion, of which the following is a specilioation. i
This invention relates to means forconverting reciprocatory motion into rotary motion, and has for itsobject the provisionl of simple and ecient means for the stated purpose which will dispense with the use of a connecting rod and crank shaft and which will be composed of fewparts compactly arranged and not liable to get out of order.
The invention is illustrated in t-he accom- [panying drawings and will be hereinafter fully described, the novel features being subsequently pointed out in the claim following the description.
In the drawings: Figure 1 is a sectional view ofone embodiment of the invention; Fig. 2 is a similar view showing a different embodiment of the invention; Fig. 3 is a transverse section of the arrangement shown in Fig. 1; Fig. 4 shows a further modification, and Figs. 5 and 6 are diagrams of different forms of cams which may be employed. l
Referring more particularly to Fig. 1, 1 designates a cylinder which may be a part of a gas or steam engine or any other form of prime motor iirwhich a piston 2 is mounted to reciprocate and actuate a piston rod 3 extending through the cylinder. In this particular embodiment of my invention, the piston rod 3 extends through a packing box and vguide 4 and is provided at its outer end with a cross head 5 having a pin 6 projecting laterally therefrom and playing in a longitudinal slot 7 in a stationary guide 8 which is illustrated as a sleeve rigid with the adjacent head of thecyIinder and projecting axially therefrom. The pin 6 is preferably equipped with a roller 9 to reduce.
the friction'al wear between the same and the walls of the slot 7 and the outer extremity of the pin plays in a cam groove 10 formed in a sleeve 11 which is rigidly secured within the hub 12 of a iy-wheel or band pulley 13. Bearings 14 may be provided between the fixed sleeve or stationary guide 8 and the ends of the hub 12, and, in the particular arrangement shown, retaining nuts or collars 15 areprovided on the end of the stationary `guide to prevent the rotating parts slipping therefrom. It. will be'noted that the bearings 14 at each end of the guide member 8 are substantially similar in construction, and 1t is, therefore, deemed necessary todescribe only one of them 'm detail, the member 14, which is positioned at the outer end of the guide, being chosen in this instance. The bearing 14 includes two ring or collar members 28 and 29. The member 28 isbeveled on its outer face, while the member 29 is beveled on its inner face. These beveled faces of the members 28 and 29 are adapted to mate, when in assembled position,vso that they may receive between them the roller bearings, indicated at 30.. The roller bearf ings 30 are, as .the result ,of the beveling of i the adjacent faces of the members 28 and 29, so arranged that they will rotate aboutv an axis which is inclined upwardly and outwardly with respect to the guide member 8. It will be seen that the member 15 is of such size that, when threaded on the ter` minal of the guide 8, it will engage only' against the bearing member 28. As a result of the peculiar disposition of the rollers,
30, it is not necessary to provide any ad ditional means. for holding the bearing member 29 against displacement. jacent terminal of the member 12 is, of course, recessed to receive the bearing member 29, so that the bearings will act to hold the driven member 12 against displacement from its proper position on the member 11. Thus the member 15 bears against neither the member 29 or l2, yet at the same time it acts to properly maintain the bearings in the necessary relation to each other and to the member 12. It will 'be readily seen .that )when the piston 2 and the rod 3 extending therefrom are reciprocated the cross head 5 with the lateral pin 6 will necessarily move in the samemanner, as the cross head is rigid with the outer end of the piston rod. Inasmuch as the free end of the pin 6 plays in the cam groove 10 of the sleeve 11 and is held 4against rotation itself by the slot 7-= of The ad-l the stationary' guide 8, the sleeve 11 will be' than one complete rotation during the stated 11o travel of the piston. The exact form ofY the cam will, of course, be -determined by the work to be done' and the conditions under Itwill be understood, of course, that the particular arrangement of the parts is immaterial and that the cross head may beconpiston, as illustrated, or
nected to a single maybe connected to a and the exact form of is of no moment so thatit may be disposed immediately adjacent the cylinder or may be ata point somewhat remote therefrom, as maybe deemed most desirable under any particular circumstances.
In Fig.' 1, the cam is illustrated in the form. of asleeve or hollow cylinder, but, in Fig. 2, I have illustrated an arrangement by which a solid cylinder may be utilized. This figure also illustrates one manner of employing a pluralitylof cylinders t0 drive the cam cylinder or roller. In this illustrative arrangement, the cylinders 16 are plurality of pistons 4arranged with their axes parallel and stationa'ry guides 17 are provided adjacent theends of the cylinders. The cam 18 is in the form of a solid roller or cylinder disposed between thev guides 17 and having the con- `centricl shaft 19 rigid therewith, the fly- Wheel'or band pulley 20 being secured upon the end of the shaft, while the groove 21 ofthecam is engaged by the pins 22 of the cross heads 23 which are connected with the pistons 2.4: in the` cylinders 16. y
1n Fig. 4, the cylinder head 25 is free of the stationary guide 26 which may be at any distance from the cylinder. The end' the stationary guide of the guide nearer the cylinder is shown provided with an annular flange or collar 27 serving as a stop for the cam cylinder and the ily-wheel in assembling theV parts, but the construction and arrangement of the essential parts are the same as in F ig. 1.
The angle of the cam groove may be determined by the work to be done and is not necessarily the same for the out and return strokes of the piston. In Fig. 5, the groove is shown cut to cause one revolution of the cam cylinder 'for each double stroke of the piston, while in Fig. 6 the groove is'cut to effect .one-half a revolution of the cam cylinder during each double stroke of the piston.
In all the illustrated forms of the invention, and various other modifications of which it is susceptible, the parts maybe arranged in a very compact form and are very few in number so that they are not apt to get out of order and loss of time due to accidents which will cause a stoppage of the motor is minimized.
What ii claim is An apparatus of the character described including a reciprocating element having a fixed concentrically arranged head at one terminal, a vcross head carried at the other terminal of the said element and arranged- 'eccentrically with respect thereto, a laterally extending pin carried by the cross head, a stationary cylindrical guide surrounding the element and having a longitudinally extending slot receiving the pin, and a driven member mounted for rotation inv the guide, said driven member being provided with a cam groove freely receivingthe'pin.
in testimony whereof I aflix my signature .in presence of two witnesses.
CHARLES E.- EDWARDS. [L a]