US 1479735 A
Description (OCR text may contain errors)
Jan. 1, 1924 1,479,735 v. w. PAGE CAM FOLLOWER GUIDE Filed Feb. 2, 1922 WIM/8858 Wwar ZIZPa/ge A TTRNEYS Patented Jan. 1, 1924.
UNITED STAT-Es Luana PA-rENr cris.
vieron WQPAG, or KEW GARDENS', NEWYORK. y i
CAivi-roriiiownn suina. y
Application filedl February 2, A1922. Serial No. 533,730. p
To all whom t mag/concern.' Be it known that I, VICTOR I/V. PAG, a citizen of the United States, and a resident of the city of New York, Kew Gardens,v
borough of Queens, in the county of Queens and State of New York, have invented a new and Improved Cam-Follower Guide, of which the following is a full, clear, and exact description.
The present invention relates to new and vpumping oil through the guide during the operation of the follower to operate the valves.
It is a further object of the invention to provide means for returning the oil to the source of ,supply as' it is pumped by the action of the cam followers.
lVith the above and other objects in view, reference is had to the accompanying drawings, in ,which- Figure 1 is a vertical sectional View taken transversely of the cam shaft housing, and
Fig. 2 is a vertical sectional view taken at right angles to Fig. 1, or longitudinally of the cam shaft housing.
Referring more particularly to the drawings, the reference character 5 designates a cam shaft, and 6 designates the cam shaft housing. Mounted upon the upper face of the cam shaft housing 6, are guides 7 adapted to form bearings for the cam followers of a valve mechanism, the remaining portion of which is not shown since it forms no part of the present invention. As more clearly shown in Fig. 2, these cam followers or guides 7 are preferably arranged in pairs and are secured to the cam shaft housing 6 by means of cap screws or the like 8. Each of the cam follower guides is provided with a central passage 9, and said central passage 9 forms the bearing for the cani followers 10. p
rI`he reference character 12 designates an annular channel formed in the side walls of the central passage 9 at approximately the center of the cam follower guides. Leading from each of these annular channels 12 is a passage 13, and said passage 13 communicates with an enlarged chamber 14:, which in turn communicates with the interior of the cam shaft housing 6 by means of an opening 15 therein. j The upper end of cachot' the cam follower guides isprovided witha stuffing boX recess' 19 and said recess is internally screwthreaded 'to receive a packing gland 20, by means of which packing may be compressed Within the recess 19. i
Each of the cam followers 10 is provided with' a cut-out portion 21, and cach of the cam follower guides 7 is provided with' an internally screw-threaded recess 22 adapted to receive a screw 23. The inner end of each of these screws 23 is reduced as indicated by the reference character 2f, and each of the screws is adapted to have its reduced end 24l positioned within the cut-out portion 21 of its respective cam follower in order to prevent rotary movement of the cam follower within its cam-follower guide 7.
Mounted in each of the cam followers 10 is a pin 25 having a head 26. The pin is shorter than the cam follower 10, and interposed between its lower end and the bottom of the cam follower' 10, is a spring 27, the lower end of which cam follower is provided with an oil opening 28.
The device operates in the following manner:
As the cam shaft is rotated to operate the cam follower, the lubricant within thc cam shaft housing is splashed into contact with the cam follower guide. In the ordinary structure of such devices, the reciprocating movement of the cam follower tends to pump the lubricant through the cam follower guide until the same flows over the upper edge of the cam follower, thus causing a constant waste of lubricant as well as a steady fouling of the exterior of the valve mechanism. In the present construction, however, it is apparent that as the oil is pumped upwardly around the cam follower during its reciprocating movement, the same will be collected within the annular channels 12 and will be returned by means of the passages 13, enlarged chamber 14, and opening 15 to the cam shaft housing 6, thus preventing the lubricant from pumping upwardly around the cam` follower and discharging through the packing box or around the upper end of said cam follower. A
From the foregoing it is apparent that the present invention provides a new and improved mechanism, the use of which prevents cam followers from pumping lubricant from the interior of the cam shaft housing to the exterior thereof, thus saving an appreciable quantity of lubricantes well as preventing the lubricant being pumped on to the several motor parts by the reciprocating action of the camfoll'o'wers.
What is claimed is:
l. In combination with a cam shaft-housing, a plurality of cam followerguides, each having a longitudinal passage to receive the cam follower, and `each provided with an annular passagein the side walls of the cam Y follower passage, passages extending from said annular ,passages to a passage1n.the cam shaft housing opening into the interior thereof, whereby,lubricant pumped by the cam follower will be collectedyand returned to the cani yshaft housing.
2. A cam shaft follower guidealaptedto be mounted upon a camshaft housing and f having a lono'itudinal passage for the res housing.
ceptionof a cam followeiglsaid guide being formed with, an annular ypassagev adapted to collect lubricant pumped by the cam follower, said cam follower guide also being formed with an? angularly disposed passage whereby the lubricant collected in said annular passage is returned to the cam shaft 3. In a cam follower mechanism, a cam shaft housing, a cam follower guide carried therebyan annular channel formed in the cam lfollower guide adapted to collect lubricant pumped by the cam follower, and a channel ,formed in said `cani follower and extending longitudinally thereof from a point labove the annular channel to the lower end of said cam follower whereby lubricant in the annular channel willqbe conveyed to the cam shaft housing.
vieron w. PAGE.