Improvements in Devices for Converting Rotary into Reciprocating Motion.
Year: 1891

page_text: Date of Application, 28th Apr., 1891-Accepted, 20th June, 1801
COMPLETE SPECIFICATION.
Improvements in Devices for Converting Rotary into Reciprocating
Motion.
I, CHRISTIAN ALBERT JENSEN of 77 Chancery Lane in the County of
Middlesex, Patent Agent, do hereby declare the nature of this invention, which
has been communicated to me from abroad by Lucius Sanford Edleblute and
Friedrich Mueller, of Sheboygan, in the County of Sheboygan, and State of
Wisconsin, United States of America, Manufacturers, and in what manner the
same is to be performed to be particularly described and ascertained in and by
the following statement :-
The invention has for its object the construction of a novel mechanical.
movement applicable to all classes of machinery wherein a conversion from rotary
to reciprocative motion is desired, and it consists, primarily, in certain peculiarities
of construction and combination of parts for accomplishing this desired result, and
secondly in means for lubricating the said parts, all as is more fully explained
hereinafter, in connection with the accompanying drawings.
DESCRIPTION OF THE DRAWINGS.
Figure 1 represents an elevation of the device,
Figure 2 a like view of the same partly in section,
Figure
a vertical transverse section of said device,
Figure 4 a detail perspective view of one of the pitman blocks,
Figure 5 a side elevation of another form of the device,
Figure 6 a plan view in section on line 6-6 of Figure 5,
Figure 7 a detail section on line 7-7 of Figure 5,
Figure 8 a detail elevation of a disk forming part of the latter form of the
device,
Figure 9 a similar view of a ring that is practically a detachable portion of the
disk illustrated in the preceding figure, and
Figure 10 a like view of a thrust-ring that also forms part of said latter form of
the device.
Referring by letter to the drawings A represents a shaft designed for
connection with a source of power, and in the first form of the device one end of
this shaft is shown as screw-threaded to engage a corresponding recess in the hub-
side of a disk B, a space being left between said end of the shaft and the
opposing portion of the disk. The shaft A is provided with a channel d that leads
to the space c, and a port e connects this space with leads f, g, in dovetail central
grooves h, i, that are formed in the outer side of the disk B to intercept each
other at right angles.
Each of the grooves h, i, is preferably in the form of a circular opening
intercepted by an angular slot, and arranged to slide in these grooves are corre-
spondingly shaped blocks j, each of the latter being provided with a screw-threaded
stem m that passes through the head C of a pitman D to engage a nut preferably
countersunk in said pitman-head.
In practice, lubricant is introduced through the shaft-channel to fill the latter
and the space c in the disk B, and to also find its way through the port e into the
leads f, g, above described. The disk B in its rotation exerts leverage on the
blocks j, and thus the latter are moved back and forth in the relative disk-grooves
to impart reciprocative movement to the pitman, said blocks being lubricated in
their travel by the material accumulated in the leads f, g, in said grooves, friction
being further reduced because of the peculiar corresponding shape of the afore-
said blocks and grooves,

page_text: The rectilinear movement of the blocks in the grooves, while the disk is on its
rotation, causes each block to describe an imaginary ellipse, the minor axis of the
ellipse furthest from the outer end of the pitman being equal to the major axis of
the other ellipse and at right angles thereto. There being always a pushing
force against at least one of the blocks, dead centers are overcome and the pitman
has a steady reciprocative movement, and while the disk is making one-half of a
revolution, said pitman will make two strokes, one back and the other forward.
Attention is also called to the fact that each pitman-block revolves twice around
its relative imaginary ellipse while the disk is making one revolution and
consequently the pitman has two full strokes alternately in each direction during
this revolution of said disk.
In that form of the invention shown in Figures 5 to 10, inclusive, the shaft A is
shown as mounted in bearings and provided with a gear-wheel E, as a means for
transmitting power, and the disk B has a circumferential flange p on its hub-side,
the other side of this disk being provided with intercepting central grooves h, i, as
described in connection with the first form of the device.
Bolted or otherwise rigidly secured to the disk B in the second form of the
device is a ring F provided with grooves h¹, ", respectively, in line with the
grooves, i, in said disk, of which latter the ring is virtually a section. The disk-
section or ring F is shouldered at 7 to oppose a flange ron a ring G interposed
between said section and the disk proper.
The disk-section F is also provided with a circular channels having a radial
branch for the introduction of lubricant, this branch of said channel being
normally closed by a screw-plug or other suitable means. Adjacent to the
channels, the inner face of the disk-section F is cut away to form a space for
the introduction of a porous packing ring H whereby lubricant in said channel is
fed to the ring G above described.
ช
A bolt I having its head counter-sunk in the rear side of the ring G is passed
through the latter and a stud G₁ thereon, and held on the bolt, by means of a
washer and nut w is the pitman-head C provided with the blocks that work in
j
the grooves h, h, i, i¹, above described and are lubricated in their travel across
said ring, the stud on the latter travelling in a circular space or groove a, between
the disk proper and its section, but lubricant may be supplied to said blocks in the
same manner as specified in connection with the first form of the device, in which
event the channels and porous packing ring would be omitted and the thrust-ring
lubricated by the travel of the aforesaid blocks.
In the latter form of the device, the blocks ; are shown loose on stems m in the
form of bolts that pass through the pitman-head C to engage washers y and nuts z,
these bolts being in line with the one I above described and having their heads
countersunk in said blocks, the latter being prevented from disengagement with the
disk-grooves, because of the connection of said pitman and the ring (that is
interposed between the disk proper and its detachable section.
In that form of the invention described in connection with Figures 5 to 10,
inclusive, the pitman D, is shown as it would stand at the completion of its
forward stroke, one of the blocks j being at the intersection of the disk-
grooves . i, and the other block as far forward as possible in the continuation of
said groove i, the latter at this time being horizontal.
Now if the disk be rotated the movement of the blocks and pitman will be
similar to what is described in connection with the first form of the device.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me
by my foreign correspondents, I declare that what I claim is :-
1. A mechanical movement comprising a rotary device centrally provided with a
lubricant space and having intercepting grooves in one of its sides, these grooves
provided with leads that communicate with said lubricant space, a sliding block
arranged in each groove, and a pitman connected to the blocks.

page_text: 2. A mechanical movement comprising a shaft provided with a lubricant channel,
a disk fast on the shaft and having a central lubricant space and intercepting
grooves, the latter being provided with leads that communicate with said lubricant
space, a sliding block arranged in each groove, and pitman connected to the
blocks.
3. A mechanical movement comprising a rotary device having one side thereof
provided with central grooves that intercept each other at right angles, a loose
ring set in the rotary device beyond the grooves and provided with a stud having
its path in a circular space that crosses said grooves, a pitman connected to the
ring-stud, and blocks on the pitman arranged to engage the aforesaid grooves.
4. A. mechanical movement comprising a rotary device having one side thereof
provided with central grooves that intercept each other at right angles, a loose
ring set in the rotary device beyond the grooves and provided with a stud having
its path in a circular space that crosses said grooves, a lubricant channel
surrounding the ring within said rotary device, a porous packing interposed
between said channel and ring, a pitman connected to the ring-stud, and blocks
arranged on the pitman to engage the aforesaid grooves.
Date : 50th 1ow of Al 1901
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.