US1351753A - Mechanical movement - Google Patents

Description

C. F. HOVER.

MECHANICAL MOVEMENT.

APPLICATION FILED .IUNE30, 1919.

Patented Sept. 7, 1920.

' To all whom it may concern UNITED STATES. 4

Specification of Letters Patent.

ME HANICAL MOVEMENT.

Application filed June 30, 1919. 'Serial No. 307,657.

Be itknown -that I CHARLEs F. Hovnn, a citizen of the United tates, residing at Conrad, in the county of Teton, State of Montana, have invented certain new anduseful Improvements in'. Mechanical Movements; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful lmprovements 1n driving mechamsms and particularly to mechanisms for converting rotary into reciprocatory movements.

One object of the present invention is to provide a novel and improved device of this character wherein the reciprocating part is prevented from being injured by knocking at .the ends of its stroke.

Another object is to provide a novel and improved device of this character which is disposed to run in oil, whereby the movements of the parts will be smooth and without friction. I. k

Other objects and'advantages will be apparent from the following description when taken in connection with the accompanying drawing.

In the drawing:

Figure 1 is a vertical longitudinal sectional view through casing whichcontains the mechanism, the parts of the mechanism being shown inside elevation.

Fig. 2 is a vertical transverse sectional view taken on the line 2--2 of Fig. 1, looking in the direction of the rotarymember, to

show the relative position of the parts and the ball bearings for said rotary member.

Fig. 3 isa horizontalsectional view taken on the line 3-3 of Fig. 2, showing the guiding means for the reciprocating member and the buffer therefor. Q

Fig. 4 is-an enlarged detail sectional view showing the roller 12 and its mountings.

Fig. 5- is a horizontal sectional view taken on the line 55 of Fig. 4.

Referring particularly to the accompanying drawing, 10 representsthe lower portion, and 11 the upper portion of an oil-tight casing. In one end of the lower portion 10 there is formed an opening 12 through which the cylindrical portion '13 of the bar 14 is slidably disposed, suitable packing 1a, and a 010-".

sure plug .6 being engaged-in said opening,

for the purpose of preventing escape of oil from the casing. The upper portion is secured, detachably, to the lower portion by the bolts 17. In the upper wall of the portion 11 there is formed a filling opening 18 in which is engaged a closure plug 19, and through this opening the casing is filled with Patented Sept. 7, 1920.

oil. The greater portion of the bar 14 is flat,

as 'shown,.and is disposed in a longitudinal groove 20, formed in the bottom wall of the lower portion of the casing. Secured to the bottom wall of the casing, and extending .vertically in longitudinal alinement, are the two bearing brackets 21 which rotatably support the longitudinal shaft 22. Oneend of this shaft extends through one end of the casing and has secured thereon a sprocket wheel 23. 'The inner faces of the upperends of the bearing brackets, as well as the adj acent end faces of the cylindrical member 24, which is secured on the shaft, between said brackets, are formed'with ball races 25 in which are disposed the circular series of ball bearings 26, to take up the end thrust of the member 24. In the peripheral face, of the member 24 there is formed an endless cam groove 27 for the reception of the roller 28 which is carried by the vertical pin 28' secured in the up er face of the fiat portion of the bar 14. urrounding this pin, and within the roller, are the. antifriction bearing rollers 29. It will be noted that the feet of the brackets 21 are disposed across the groove 20 so that said brackets act'as guides and retainers for the bar to prevent upward movement thereof from said groove. Formed in the bottom of the casing, and extending laterally away from the groove20, are the small grooves or channels 30, and slidably disposed in each of these channels is a block 31 carrying on its inner end a roller 32 which bears againstthe side .face of the flat portion of the bar 14. Each of these blocks is longitudinally slotted, as at 33 to receive a screw 34 which is engaged in the bottom of the channel 30, and by means of which the blocks may beadjusted and held in different positions toward and away from the bar 14.

The portion of the bar 14, which is disposedoutwardly of the casing, is provided with a ball head 35 for engagement with one end of a sickle bar of a mowing machine, or the like, not shown. At one end of the casing there is mounted a bufier spring 36 against which the end of the flat portion of the bar 14jat one end oi the stroke thereof,

while a similar spring 37 is disposed at the. other end of the casing for abutting engage-; ment by the vertical in 38 carried by the inner end portion of t e cylindrical part of the said bar; Thus jar and shock are absorbed at each .end

' of the bar 14.

' *Whatis claimedis: 4

. Comof the stroke of the It will thus be seen that when the shaft 22 is continuously rotated the cylindrical member will cause the bar 14 to reciprocate longitudinall in the cove 20, so that at .one end of t e stroke thereof it will abut against the. spring 36, and at the other end thestroke the pin 38 will abut against the 37 thereby avoiding knocking soun and preventing shocks and ,j'ars.

-The cam grooves walls acting on the roller v 28, and rotating continuously, will produce the desired continued reciprocation of the bar. *Inthe bottom wall oi the groove 20 there are formed the depressions 39 within which are disposed the ball bearing-s40 for supporting the bar 14, and permitting. the same a free sliding movement.

actuating the bar, the base havmg transverse channels communicating with its groove, and plates adjustably mounted in -.ber in the casing having groove therein, a longitudinallyi' slidable the channelsand having bearing. rollers disposed to contact respectively with the opposite sides of thebar. 3

2. A device or the. class described" prisirg an oil-tight'cas'mg arotatin'g meman endless cam member, a roller carried by the *slidable 1 member engaging in the cam groove, *supports for the rotatin member extending over the slidable mem r for retaimng the latter agalnst upward movement, a pin carried by the. slidable member, fand bufiers .situated at the ends ofthe casingv for engagement respectively by' one end ofthe reciprocating sliding member andthe said prising a casing havin a, rotatable member mounted therein an ing it, said. member'havin'g a cam roove, a a

3. A device of-the class described com-u having means jex tended exteriorly of the casing for rotat;-

rmounted for reciprocation in t e casing and extending exteriorly thereoiimeans carried by the bar and engaged inthe' cam groove for reciprocation of thesbar 'from the latter, roller guides disposed at" opposite sides of andin contact with the bar. and

yieldable .stops for the bar disposed vfor operation at opposite reciprocatory strokes of the bar. 1

In, testimony whereof, I fi'ix ture, in the presence of two witnesses.

' CHARLESv HOVER. Witnesses:

M. M. Pn'rnns, O. G. SHEPHERD.

my signa adjustable toward and away from it, and

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