US 1061700 A
Description (OCR text may contain errors)
MEANS FOR TRANSMITTING MOTION.
APPLICATION FILED FEB.21. m2,
1,06 1,700. Patented May 13. 1913.
Witnesses: I m/en bor',
W Karl Steinbecker, 5 fb w glgmk KARL STEINBECKER, OP CHARLOTTENBIHRG, GERMANY, ASSIG-NOB T GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.
MEANS FOR TBAN$MITTING MOTION.
Specification of Letters Patent.
Patented May 13, 1913.
To all whom it may concern Be it known that I, KARL STEINBEOKER, a subject of the King of Prussia, residing at Charlottenburg, Germany, have invented certain new and useful Improvements in Means for Transmittin Motion, of which the following is a specfication.
The present invention relates to means for transmitting motion from a cam shaft to no a mem er that is arranged to move in a plane perpendicular thereto.
The invent-ion is intended es eciall to transmit motion from a cam sha t to a igh pressure pump the latter discharging fuel to an an internal combustion engine, since it has great utility in this connection but it is not necessarily limited since it is ca able of wider application. In such a device there is at times a heavyside thrust which causes an the parts to wear rather rapidly due to friction and which ultimately results in objectionable side-wise play of theparts.
My present invention has for its object to improve the construction and arran ement of such devices whereby the ob'ectionable features above noted are obviate For a consideration of what I believe to be novel and my invention, attention is directed to the accompanying specification and claims appended thereto.
In the accompanying drawing which is illustrative of my invention, Figure 1 is a sectional view of an actuator for a fuel pump; Fig. 2 is a similar view taken at to right angles to that of Fig. 1; and Fig. 3 is a cross-sectional view taken on line 3-3 of Fig. 1.
1 indicates a pump plunger or means that has a reciprocating motion. Instead of be- M ing a plunger, tho part 1 might be a reciprocating member intended for lifting valves or other devices. On the lower end of said means is a socket 2 which may be'integral with the means or attached thereto in any d5 suitable manner. The socket is provided with two downwardly extending arms or portions '3 that receive the pivot 4. The under surface of the socket is provided with a curved surface 2 that is a surface of revolution, the urpose of which will be referred to hereina er. Surrounding the reciprocating member or means is a sleeve 5 having a perlpheral shoulder that en ages an internal shoulder on the casing 6, t e latter being located in a secondary casing or holder 7.
The casing 6 is provided with a chamber in which is snu ly fitted the sleeve or liner 8,
the lower on of which is provided with two slots 9 located on opposite sides. The side walls of these slots are parallel and act as 6.
guides for the portions or arms 3 of the socket. Located between the liner and the sleeve 5 is a compression spring 10 which tends at all times to force the reciprocating member and its socket downward.
11 indicates a roller that is arranged to travel on the peripheral surface of the driving member 12. In the present embodiment of my invention, the driving member comprises a shaft such as. the half-speed shaft 7. of an internal combustion engine and is provided with cam surfaces 13 and 14. These cam surfaces aresimilar in construction. One of the cam surfaces is used when the shaft is driven in one direction, and the other cam surface, when the shaft is driven in the opposite direction. Each of these cams is provided with an inclined surface 15 whose diameter gradually increases from that of the shaft to the maximum height of the cam. The object of this arrangement is to vary the length of the stroke of the reciprocating member 1. As shown the roller 11 is resting on the concentric portion of the driving shaft. As the shaft is moved to the right or left from the central position the length of the stroke of the means or member 1 will be increased by an amount depending upon the position of either of the cams with respect to the roller. Owing to the inclined surfaces 15 there will at times be a side thrust on the roller, which, unless means are provided to take care of it, will result in excessive friction of the parts that would ultimately cause a large amount of wear which, of course, decreases. the life of the apparatus and renders the action less certain and definite. In order to take care of this thrust, the roller is provided with two thrust bearings 16 each comprising a row of balls. The pivot or spindle 4 is provided with two disks 17 and 18 each of which has a surface of revolu-' tion. The peripheral surfaces of these disks are suitably shaped, which shape should correspond with that of the surface of revolution 2 on the under-side of the socket. The pivot and the disks can with advantage be made in two pieces, one piece comprising a cylindrical head 19 that engages a suitable 110 recess in one of the arms 3, disk 17 and screw 20, the other piece comprising a head 21 that engages an arm 3, disk 18 and a cylindrical portion 22 that engages a'co-rresponding portion of the other piece, the
two forming a spacer so that the distance between the rows of balls will be preserved at all times. The disks and also the roller are preferably hardened to reduce wear. In order to hold the roller in place when the parts are'separated, a cap 23 is provided that is screw-threaded to the casing 6.
The action of my improved structure is as follows :Assuming the parts to be in the position shown, as the driving member 12 rotates, the roller 11- travels thereon and being on a concentric portion thereof no motion is impartedto the reciprocating member 1. Assuming now that the driving member 12 is moved to the left until the roller 11 rides on the inclined portion 15, the length of stroke of the reciprocating motion 6f the member 1 will depend upon the position of the roller on said inclined surface. Owing to the fact that it is inclined, a certain amount of side thrust to the left will be exerted.-. This thrust will be taken up by the left-hand ball bearing and also by the disk 17 rotating in peripheral engagement with the curved surface 2 of the socket. Assuming that thecam shaft or driving member 12 is moved to the right, the disk 18 will roll in the curved surface 2 and assist in taking up the thrust and thereby reduce the effects of side thrust. When the driving member 12 is so situated that the roller travels on the highest portion of the cam there will be no tendency to side thrust. .No means have been illustrated for rotating the shaft 12 or for moving it axially, but it is to be understood that any well known, devices can be employed for the purpose.
I have omitted the pump cylinder and also the suction and discharge valves since these may be. of any suitable construction and are not essential to an understanding of my invention.
It is to be noted that the socket or holder serves two purposes. First it serves to transmit bodily movement of the roller to the reciorocating'plunger or means 1 and; second it serves as a surface of revolution upon which the disks roll when the roller is subjected to axial thrust. This arrangement has the advantage of being mechanically simple, of being readily assembled. and taken apart and permits of the easysubstitution of parts when necessary.
In accordance with the provisions of the patent statutes, I have described the prin ciple of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the angle thereto, a roller that travels on the member, a pivot for the roller, a support for the roller that moves with said means, and a means moving with the roller that is arranged to, roll on a surface of the support when the roller is subjected to axial thrust.
2. In a device of the character described,
the combination of a driving member, a reciprocating means moving in a plane at an angle thereto, an inverted socket located at one end of the reciprocating means and having a curved surface, a roller located within the socket, a pivot for the roller that engages the socket, and one or more devices each having a surface of revolution arranged to engage with and roll on the curved surface of the socket when the roller is subjected to axial thrust.
3. In a device of the character described, the combination of a drivin member, a reciprocating means actuate thereby, v a socket carried by one end of said" means, a
casing, a sleeve located in the casing having 4. In a device of the character described,
the combination of a driving shaft, a reciprocating means actuated thereby, a socket carried by one end of the means which has a curved under surface, a roller located within the socket and traveling on the shift, a ivot for the roller. that engages the walls 0 the socket, a pair of ,disks carried by the pivot and located on oppositesides of the roller which are adapted to roll on the curved surface of'the socket when the roller is subjected to end thrust, and thrust bearings between theroller and disks.
. 5. In a deviceof the character described, the combination of a cam shaft, a reciprocatin means actuated thereby, a casing for said means, a sleeve lining for the casing havin a slotted end, a socket carried by one end 0 the means which has a curved surface and is guided by the sleeve, a spring that presses the socket toward the shaft, a roller located in the socket, a pivot therefor which engages the socket, and a disk carried by the pivot that rolls on the curved surface of the socket when the roller is subjected to axial thrust.
6. In a device of the character described,
the combination of a driving member, a
a reciprocating means located in the casing, a socket on one end of the means, a sleeve fixed within the casing which has a slotted end to receive and guide the socket, a roller, and a pivot for the roller that engages the socket and transmits bodily movements of the roller to the reciprocating means.
7. In a device of the character described, the combination of a. driving member, a casing, a reciprocating means located in the casing, a socket on one end .of the means, a
sleeve located within the casing which has casing,
' a slotted end to receive and guide the socket,
a roller, a pivot for the roller that engages the socket and transmits bodily movements of the roller to the reciprocating means, a spring that presses the roller against the driving member, and a cap carried by the casing to prevent the roller and socket from 20 transmits motion therefrom to the member, said socket having a surface of revolution, and means for transmitting axial thrust of the roller to said surface.
In witness whereof, I have hereunto set 30 my hand this third day of February, 1912. KARL STEINBECKER.
Witnesses Woummn HAUPT, HENRY HAsraa means actuated thereby, a roller, 9, socket that holds the roller-and 25