US1484960A - Rotary cylinder motor - Google Patents

Description

Feb. 26, 11924.; 11,484,%@

c. H. PECK ROTARY CYLINDER MOTOR Filed July 28. 1921 4 Sheets-Sheet l INVENTOR BY r HIS ATTORN Y Feb. 26, 11924};

C. H. PECK ROTARY CYLINDER MOTOR Filed July 28 1921 4 Sheets-Sheet 2 HE) ATTORNEY Feb. 26, 192% 1,4843% c. H. PECK ROTARY CYLINDER MOTOR Filed July 28. 1921. 4 Sheets-Sheet 3 INVENTOR @wdfifimk.

HIS ATTO Feb. 26 192%.;

C. H. PECK ROTARY CYLINDER MOTOR Filed July 28 1921 4 Sheets-Sheet 4 INVENTOR ms ATTOR EY mar CMD H.

PECK, or wavnnnr, YORK, assienoa roinea'asotn-a'anncomror JERSEY 'crry, NEW JERSEY, A coarona r onor New JERSEY.

no'mnr CYLINDER moron.

Application filed July 23; 1921. serial no. 488,062.

To all whom it may concern:

Be'it known that I, CAIU H. PECK, a citi zen of the United States, a resident of Waver1y, county of Tioga, Stateof New York,;

have lnvented. acertain Rotary Cylinder Motor,of which thefollowing is a specifica-' tion. a

f This invention relates to'rotary' fluid actuat'ed cylinder-motors of the type in which the .rotary driving member is'in the form of a plurality of rigidly connected angu 'larly dis osed' cylinders bodily rotatable as a unit a out a center and 'operatively con'v it may receive little or no cleaning, oi1ing or other attention, unless reached by'a ladder or lowered to the floor,

The objects of the present invention are to produce a simple, cheap, light, yet strong and rugged, and powerful motor which will withstand constant use without getting out of order under the unfavorable conditions to which such motors are ordinarily subjected.

The motor is shown in its preferred form in the accompanying drawin s in which- Figure 1 is a longitudina sectional ele-' vation throu h the motor on the line 11 of Figure 2 ooking in the direction-of the arrows, with the driven shaft broken away. This particular motor was intended for a hoist and a portion of the hoist casing is also shown broken away.

Figure 2 is a transverse vertical sectional view on the line 22 of Figure 1 looking in the direction of the arrows, with a set of yokes which would otherwise be hidden indicated in dotted lines in order to indicate driven shaft P extending'thr-ough the cover the relation of the Figure 3 isan en of the motor with the case or frame broken away to show the motor and the driven (yokes and pistons,

shaft in transverse section on the line 33, of Figure 1 looking in the direction of thearrows,

Figure 4; is an end view of the opposite Such rotary view of the driven endend of the motor partly in transverse section on the line 44 of Figure 1,

- Figure 5'is a detail transverse sectional view taken'through the controlling valve on the line 5 5 of Figure 1, and

Figure 6'is a'detail longitudinal sectional plan view through the controlling valve with the valve in a different position.

vReferring to the drawings the enclosin case A having the cover plate. B secured .thereto as by means of the cap screws 0.

forms the frame of the motor. A portion of a frame D held by the screws C is shown in Figure -1 which may form the frame of a hoisting drum or other suitable part to be operated by the motor.

The rotary driving member consists of a plurality of rigidly connected angularly disposed cylinders, in this instance three cylinders E,F and G being shown for purposes ofillustration, it being understood that as many cylinders may be provided as desired. The cylinders are in this instance construct: ed as integral arts of 'a suitable circular cylinder casing which connects and braces the cylinders and is preferably hollow with openings J in its periphery for lightness;

Such a construction is light and strong and I may conveniently be cast or otherwise constructed in one piece.

In this instance the longitudinal axes of the cylinders are shown lying on chords of the circle formed by the cylindrical casing, rather than on radii ofthe circle, so that these axes are preferabl ofl'set from the center of the driving member to produce the. I

requisite levera e and reduce the side pres-' sure on the cylinder walls as will appear,

although the cylinders may be radial if desired.

The circular cylinder casing H is mounted to rotate about the hollow stationary shaft L suitably supported in the case A, at one side of the case; and extending into a rotary sleeve 0 keyed to the cylinder casing toxrotate therewith, and suitably connected to rotate a driven member as the plate B.

The walls of the cylinders E, F and G are preferably slotted longitudinally at opposite sides at their outer portions for a. portion of their length as indicated at Q through which extend the wrist pins R of the p)1stons S, and spacing sleeves T are prefe'ra ly WES wrist pin.

' Z may be in the form of a sleeve-rotatable provided over the wrist pins. Stationary eccentrics U and V are mounted at each side of the cylinder casing H in any suitable manner and in this instance the eccentric U formed as a part of, the sta-,

I and j, are revolubly mounted side by side on the eccentrics U and V respectively and ball bearings 9 consisting of cages and balls as' shown are preferably interposed between the yokes and the eccentrics. The yokes are connected inpairs to the projecting ends of thepiston wrist pins R in any suitablemanner. As shown in this instance, the inner and outer yokes c and f forming one pair are connected to the wrist pin R of one piston, one end h of the wrist pin being reduced and entering an aperture in the end of the yoke f, and a nut j securesthe yoke c to the other screw threaded end of the The inner and outer yokes d and a forming another pair are adapted to be connected to another wrist pin and the intermediate yokes b and e are adapted to be connected to the remaining wrist pin or pins depending upon the number of cylinders and pistons, it being understood that there are twice as' many yokes as cylinders.

Suitable means are provided for automatically supplying and distributing motive fluid to the cylinders, and as shown fluid under pressure, as-compressed air may be supplied and exhausted through the hollow stationary shaft L from the supply connection Y. Theshaft L is provided with two longitudinal passageways la and 0 opening outwardly through the ports p and g atthe center of the machine, which are controlled by the rotating valve sleeve O having the ports 1', so that motivefluid is successively admitted to and exhausted fromthe cylinders as the cylinder casing and valve sleeve 0 rotate together. A suitable throttle valve Z is provided for controlling the supply of fluid from the supplyconnection. Y and for reversing the motor. This throttle valve upon the reduced and preferably tapered end 8 of the stationary shaft L' forming a seat and operated by means of the. arms t and u to which ropes or chains may be connected in the usual manner. The ends 'v of a retracting spring w coiled'about the collar m engage the arms a and serve to center the throttle valve so that it may be rocked in either direction for distributing motive fluid to' the motor for: rotation in one direction or the other. The throttle 1 aeaeeo valve. sleeve Z is formed with the chambers 2 and 3 and the exhaust-ports F1 and 5 and the valve seat 8 is provided with the inlet passage 6, commumcating with the radial ports and 8, and also with the radial ports 9 and 10 communicating with the longi-- tudina'l passages 0 and k in the shaft L. By rocking the throttle valve sleeve Z, motive fluid is admitted from the supply passage 6 through a chamber 2 or 3to one of the passages is or 0, the other of which passages forms an exhaust passage to the atmosphere through anatmospheric port 4 or 5. In Figure 6 the valve Z has been turned to admit fluid from passage 6, through cham-' her 2, to the passage 0, and from thence to the motor at the central rotary valve sleeve 0. Fluid is exhausted back through the passage is, to the exhaust ports 10 and 5.

In the operation of the apparatus, let it be assumed that the motor is rotating in the direction indicated by the arrows, or clock-wise as Figures 2 and 3 are viewed. In Figure 2 the piston of the upper cylinder E isabout to start on its outward power stroke and motive fluid is about to be admitted to the cylinder as indicated by the position of the valve sleeve 0. The piston of'the left hand cylinder F is on its inward stroke and the cylinder is exhausting through the passage "0. The piston of the right hand cylinder G has not yet reached its'outward position and air is still being 7 supplied to the cylinder through the'passagc .k. The reciprocations of the pistons in the cylinders as will be apparent cause the cylinder casing to revolve at high speed due to the eccentricity of the stationary eccentrics about which the yokes revolve. By turning the throttle Z to the reverse position as de scribed, the motor will be reversed.

I claim: j

1. A rotary fluid actuated cylinder motor comprising a case or frame, a stationary hollow shaft supported in said case, a rotary sleeve on said shaft, arotary driving member in the'form of a cylinder casing bodily revoluble with said sleeve on said shaft and provided with a plurality of angularly disposed cylinders, the outer ends of the walls of the cylinders being longitudinally slotted at opposite sides for a portion of their length, pistons adapted to reciprocate in said cylinders, wrist pins carried by said pistons and projecting laterally through the slots in the cylinder walls, stationary eccentrics located within the case or frame at each side of the cylinder casing, one eccentric being formed on the stationary hollow shaft, the rotary sleeve extending through the other eccentric, a plurality of yokes revolubly mounted side by side on each eccentric, there being double the number of yokes for a given number of cylinders,-pairs of yokes being connected to the projecting insaeeo ends of the said wrist pins at each side of the cylinders, a driven shaft extending outwardly from the case or frame in alignment with the said stationary shaft and connected through the'agency of said rotary sleeve to be rotated by the rotary cylinder casing, and means operated and controlled by the rotation of the cylinder casing and said rotary sleeve for automatically distributing motive fluid to said cylinders.

2. A rotary fluid actuated cylinder motor comprising a case or frame, a stationary hollow shaft supported in said case, a rotary sleeve on said shaft, a rotary driving member in the form of a cylinder casing bodily revoluble with said sleeve on said hollow shaft and provided With a plurality of angularly disposed cylinders, the outer ends of the Walls of the cylinders being longitudinally slotted at opposite sides for a portion of their length, pistons adapted to reciprocate in said cylinders, wrist pins carried by said pistons and projecting laterally through the slots in the cylinder walls, stationary eccentrics located within the case or frame at each side of the cylinder casing, one eccentric being formed on the stationary hollow shaft, the said rotary sleeve extending through the other ecentric, a plurality of ball bearings side by side on each eccentric, a plurality of yokes revoluble on said ball bearings, there being double the number of yokes for a given number of cylinders, pairs of yokes being conected to the projecting ends of the said wrist pins at each side of the cylinders, a driven shaft extending outwardly from the case or frame in alignment with the said stationary shaft and connected through the agency of said rotary sleeve to be rotated by the rotary cylinder casing, and means operated and controlled by the rotation of the cylinder casing and said rotary sleeve for automatically distributing motive fluid to said cylinders.

3. A rotary fluid actuated cylinder motor comprising a case or frame, a stationary hollow shaft supported in said case and provided with ports and passages for the distribution of motive fluid to the motor, a rotary sleeve on said shaft, a rotary driving member in the form of a plurality of rigidly connected angularly disposed cylinders bodily revoluble with said sleeve on said hollow shaft, the Walls of the cylinders being longitudinally slotted at opposite sides for a portion of their length, pistons adapted to reciprocate in said cylinders, piston wrist pins projecting laterally through said slots in the cylinder Walls, stationary eccentrics mounted at each side of the driving member within the case, one eccentric being formed on the stationary hollow shaft, the said rotary sleeve extending through the other eccentric, a plurality of yokes revoluble on each eccentric, pairs of yokes being connected to the projecting ends of the Wrist pins at each side of the cylinders, a driven member connected through the agency of said rotary sleeve to be rotated by the driving member, said rotary sleeve over the stationary shaft being rotated by the driving member and having ports cooperating with the distribution ports in said shaft for automatically supplying motive fluid to and exhausting fluid from said cylinders.

In testimony whereof I have signed this specification.

GAID H. PECK.

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