US926915A

US926915A - Feed-motion device.

Info

Publication number: US926915A
Application number: US41751008A
Authority: US
Inventors: Frank J Waters
Original assignee: WATERS ENGINE Co
Current assignee: WATERS ENGINE Co
Priority date: 1908-02-24
Filing date: 1908-02-24
Publication date: 1909-07-06
Anticipated expiration: 1926-07-06

Description

F. J. WATERS.

FEED MOTION DEVICE.

APPLIUATION IILBD 1'23. 24, 1908.

' Patented July 6, 1909.

Y A Vl I'TNESSEE. 4+

UNITED STATES PATENT OFFICE.

FRANK J. WATERS, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO WATERS ENGINE COMPANY, OFSACO, MAINE, A CORPORATION OF MAINE.

FEED-MOTION DEVICE.

Specification 0! Letters Patent.

Petented July 6, 1000.

Application filed February 24, 1908. Serial No. 417,610.

To all whom it may concern:

Be it known that I, FRANK J. WATnns, a. citizen of the United States, residing at Providence, in the county of Providence and State of .llhode Island, have invented certain new and useful lin rovelnents in Feed-Motion Devices, of w hich the following is nspccificzition, reference being hard therein to the accompanying drawings.

[like reference numerals indicate p arts.

Figure 1. is :1 top plan view of my im roved feed motion device in combination with the cylinder of steam en inc and an oil pump to lubricnte said cylinder. Fig. 2 is a front elevation of said feed motion device, the Wheel and shaft being shown in central longitudinal section on at line at a right angle to said shaft. Fig. 3 is a front elevation of said feed motion device and an end elevation of the steam cylinder, together with the means of adjusting the length of the stroke of said device. Fig. 4 is a. view partly in elevation and partly in section as seen on line a: n: of Fig. 3. Fig. 5 is evieiv partly in elevation and part1 in section as seen on line 2-2 of Fig. 3. igs. 6 and 7 ere'dctoil views illustrating the means of securing respective endsof the friction strap. an enlarged scslc.

My invention relates to a mechanical device for converting acontinuous rotary motion into n. reciprocating motion, and is a substitute for the rock and gen r commonly used for that purpose.

My invention consists of the novel construction and combination of the several parts hereinafter described, as set forth in the claim.

In Fig. 1 my said feed motion mechanism Figs. 4, 6 and 7 are on is shown as operated by the shaft of a steam cylinder of it rotary ci'igine for the pur )osc of pumping oil into snid cylinder to lubricate the interior surface tl'lorcol' for the movements of a. rotary piston blade therein. It: is obvious, however, that said invention is also applicable for various mechanical hurposos in machines Where it is desired to convert a rotary movement, whethercontinu- .ous or intermittent,into n reciprocating movement. I

In the drawings 1 represents the cylinder of u rotary steam engine. The cylinder has the usual head 2 end the bearing and stulling like box 3. A rotatable shaft 4 is mounted in the bearing 3 and extends out from said bearing, its illustrated in Fig. 1.

A bracket 5 is secured by bolts (5 to the cylinder head 2 and a bracket 7 is secured to the cylinder 1 by bolts 8. The brackets 5 and 7 support, respectively, the

bearings

9 and 10. A shaft 11 is rotatably mounted in the bearings 9 end 10. At one end of the shaft 11 is fastened a disk 12 having a. dism'etricel slot. An oil tank 13 is mounted on a proper fixed support and has an oil supply pipe 14. The piston rod 15 of an oil pump is provided with a pin 16 which projects from said piston rod. projects loosely into the diometricnl slot of the disk 12. The rotation of the shaft 11 in the direction indicated by the arrow "17 causes the rotation of the disk which is mounted on said shaft and imparts a reciprocating movement to the piston rod 15, thus pumping oil from the tank 13 into the cylinder 1 to lubricate the interior surface of said cylinder for the movement of the rotating piston blade therein.

A circular disk 18 has e centrnl hub 19, through Whichtho cylinder shaft 4 passes and said shaft is secured to said hub by the spline 20. The disk 18 has the radial slot 21.

A bracket 22 extends from thc disk 18', which is provided with two parallel sides 23, n bclp'ing 24 and a. cross piece 25. A screw 26 has n head 27.

born, by which it is cdjustnbly mountedon the screw 26. This block 32 has a pin 33', whose outer end is ll'll:1.(lt(l for the reception of a nut 7 loosely mounted on the pin 33 and n link bar. 36 is mounted. on said tube 35. The block The pin 16 A flanged tube or bearing 35 is The central portion of the shank of the screw 261s threaded but the

portions

28, 29, are smooth and cylindrical.

32 is accessible through the opening 2] in the disk 18. l I

My improved feed motion device isprovided with a circular disk or wheel 37, having the peripheral flange 38, which is made with a circumferentialgroove 39 as shown in detail in Fig. 5. 1 The circular disk or wheel 37 has .ing of said lever arm.

a central huh 40, whose hore lits upon the end of the shaft 11 and is fastened thereto by a spline 41. A friction strap 42, preferably of steel, loosely surrounds the said disk or wheel in the circumferential groove or channel39 of the flange 38 thereof.

A-stra'p holder 43 has a curved con-ave surface adapting it to a sliding fit upon the periphery of the wheel or disk 37. One end of the strap 42 is fastened to the strap holder 43. The strap holder 4? has two ear pieces 44. A pin or pivot 45 connects a lever arm 4-6 with the car pieces 44.

A link 47 has two parallel sides 46 and two oppositely-arranged

tubular hearings

49, 49. A pivot 50 passes through the two bearings 49 and niounts the said

link

47, 48, upon the lever arm 46 out beyond the pivotal mount- The link 47 is fastened to one on d of the strap 42. A lever 5. has a bearing 52 and a pivot 53 extends through the hearing 52 and also through two hearings 54, 54, which are formed on the

respective sides

48, 48, of the link 47. Near the outer end of the lever 51 it is tapped to receive 'a screw 55, whose inner end. bears against the end of the link.47.

The inner end of the lever 51 has atransverse nick or notch 56 (Fig. 7), in which one end of a curved spring 57 is inserted. The

upper end of the spring 57 is curved fora rior surfaces are threaded.

wearing surface and bears against the edge ofthe lever arm 46, being held from lateral displacement thereon by the guide plates 58, which are secured to' the lever arm 46 near the end thereof.

The upper end of the lever arm 46 is con" nected by the pivot 59 to the end'of the link bar 36.

The outer end of the shaft 11 is mounted in hearings which are formed on the bracket 60, the latter being held to a fixed support by bolts 61. Said bracket also supports a hanger 62, at the lower end of which is a tuhular block 63. The outer end of the bore of block 63 is threaded to receive and engage the tubular nut 64, whose exterior and inte- A brake shoe 65 is curved to fit the curved edges of the flanges 38 of the disk or wheel 37 and provided with a cylindrical stem 66 and a screw 67, both integral. A check nut 68 on the outer end of the tubular nut 67 holds the said. nut 64 in its adjusted position. A spiral spring 69, surrounding the smooth cylindrical portion.,of the screw 67, has one end bearing against the lower end of the stem 66 and its opposite end hearing against the inner end of the tubular nut 64. "1

The operation pl my said feed motion device is as follows: T w p'urp so of the mech anism illustrated in the ilrawhngs and l'iereinhefore'specificall y desc ed is to convert the continuous rotary motionof the shaft 4 into an intermittent rotary movement of the shaft 11, and the particular work accomplished. in the operation of the device as so illustrated and specified is to utilize the rotation of the shaft 4 of the cylinder 1 to period-- ically pump oil from the oil tank 13 into said cylinder lzor the proper lubrication of the interior peripheralsurfaces of said cylinder to allow the free rotational sliding of the piston blades therein, constituting a portion of a rotary steam engine. Supposing-the direction of the rotation of the shaft 4 to be as indicated by the arrow 70 in Fig. 3, said shalt during one-half of its rotation will communicate a movement to the lever arm 46 in the direction indicated in said figure by the artion it will communicate a movement to the lever arm 46 in the direction indicated in Fig. 2 by the arrow 72. Such alternation of movement of the lever arm 46 is due to the fact that the link bar 36, which is pivotally connected at 55) to the lever arm 46, is mounted eccentrieally to the shaft 4. length of each stroke of the lever arm 46 is determined by the amount of eccentricity of the position of the nut or block 32 on the screw 26, the nearer the nut or block 32 is to the axial line of the shaft 4 the shorter will he the stroke and vice versa, and the length of said stroke is therefore adjustably determined and regulated by turning the screw 26 by its head 27, thus causing a corresponding: travel of the out or block 32 on said screw.

'hen the lever arm 46 is oscillated by the link bar 36 in the direction indicated by the arrow 7 in Fig. 3', the strap 42 is tight on the periphery of the disk or wheel 37 and eompels said disk or wheel to rotate in the direction indicated by the arrow 73, thereby imparting, an equal degree of rotation to the shaft 11 to which it iskeyed-at 41. The intermittent rotation of the shaft 11, thus caused. in the lirection indicated by the arrow 17 in Fig. 1, results, by means of the slotted head 12 and the. pin 16 of the piston rod 15, in an intermittent action of the oil pump and injects oil periodically into the cylinder 1. l' /llfil'i said oscillation of the lever arm 46 in that direction reaches its limit and is reversed, as re iresented in Fig. 2, the strap 42 is loose out ie-disk or wheel '37 and slides thereon, without in! iarting any movement to said wheel or disk, the latter being prevented froin such movement by the brake shoe65, which is pressed up into engagement with the peripheral edges of the flanges 38 by means of the spiral spring 69 hearing against the stem 66 of the brake shoe 65. baid pressure of the brake shoe though sultieient to hold the wheel or disk 37 from movement ,cansed by the slight sliding friction of the fwtrap 42 thereon when the movement is in j the direction indicated by the arrow 72 in 1 Fig. 2, is not suthcient to prevent the moverow 71, and during the other half of its rota- The I isconsidcred as a fulcrum,

pivot 45 moves the cars 44 and the strap ment of the wheel or disk 37 when the movement is in the direction indicated by the arrows 71 and 73 in Fig. 3. k

p The reason why the strap 42 is loose on the wheel or disk 37, when the movement is in the direction indicated in Fig. 2 by the arrow 7 2, is that the leverage of the arm 46, so far as the pivot 45 is considered as the fulcrum, causes the

link

47, 48 topush the end of the strap 42, there connected to it, away from the opposite end of said strap; and at the same time, so far as the pivot a fulcrum, the arm 46 pushes by means of the pivot 45 the ears 44 and the strap holder 43, which is fastened to said opposite end of the strap 42 in a direction 0 indicated by the arrow 72. hus the stra. 42 does not hug so tightly the rim of the dis or wheel 37 and loses its frictional hold thereon. But when the movement of the lever arm 46 is in the direction indicated by the arrow 71 in Fig. 3, the leverage of the arm, 46, so far as the pivot 45 is considered as the fulcrum, draws the

link

47, 48 in the direction indicated by the arrow 71 and so pulls the end of the strap 42, there connected to said link, toward the opposite end of the strap 42; and at the same time, so far as the pivot 50 the arm 46 by the 'iolder 43, to which the said opposite end of the strap42 is fastened, in a direction op 0- site to tiat indicated by the arrow 71, t ius tightening the frictional hold of the stra 42 on the rim of the wheel or disk 37'. This tight frictional hold or bite of the said strap on the wheel or disk overcomes the pressure of the brake shoe on the rim of the wheel or disk and compels the wheel or disk to rotate as shown by the arrow 7 3. The degree of the tightness of said frictional engagement of the strap 42 on the )eriphery of the wheel or disk 37 can be regulated and adjusted by means of the spring 57 and the lever '51. When the screw 55 is tightened up it elevates the outer end of the lever 51 and consequently moves the inner end of said lever nearer to the arm 46. This movement of t e lever 51 flattens somewhat the bow s ring 57 and thus increases, its tension there y cans ing the free end of said spring to bear with greater force against the edge of the arm 46. The spring 57 therefore reacts and presses the lever 51 and the screw 55 so that the latter bears with increased power upon the link 47, and the link 47 consequently holds the portion of the strap 42 contiguous thereto, in an increased friction upon the rim of the wheel or disk 37. But if the/screw 55 is loosened, the outer end of the lever 51 is lowered, and

50 is considered h i i 57 is relaxed, so that the link 47 osite to that i thus increasing the inner end of said lever is moved away from the arm 46 and the tension of the spring:

bears with less force on the contiguous end of the strap 42. In this manner, the exact length of the feed motion imparted by the friction strap 4'2 to the wheel or disk 37 can be regulated, determined and maintained, thus making this device capable of very fine and exact work, such as cannot be accomplished by a mere rack-and-geat feedmechanism. When the screw 55 is loosened or withdrawn, the resilience of the strap 42 causes said strap to loosen its frictional hold upon the perip ion of the wheel or disk 37, and by means of the link 47, fastened to said strap, draws the arm 46 out of the position illustrated in Fig. 2, slightly to the right of said position; but when, by tightening up the screw 55, the outer end of the lever 51 is elevated, the up per end of the spring 57 presses the upper end of the arm 46 back into alinemcnt with the ears 44, as shown in said figure. The arm 46 then, slightly turning on the pivot 45 as a fulcrum, causes the link 47 to pull the strap 42, there connected with said link, the frictional hold of the strap 42 on the rim of the wheel or disk 37.

In order to give a reverse direction to the feedingrlevice, the

parts

36 and 42 to 59, both inclusive can be changed 180 in position upon and with reference to the w-heelor disk 37, thus making the device operable in either one of the two 0 )posite directions as may be desired. This eature is believed to be a useful novelty in the art:

I claim as a nove and useful invention and desire to secure by Letters Patent tably mounted on a support; a friction strap engageable with the periphery of said disk; a strap holder having ears said periphery and fastened to one end of said strap; a lever arm; a pivot connecting said ears to the lever arm; a link pivotally mounted at one end on the lever arm an fastened at its other end to the other end of a lever centrally pivoted to'said link; a screw passing through the outer end of said lever and bearing thrustwise against said link; and a bow spring secured at one end to the rear end of said lever and having its opposite end in sliding loose'bearing contact with'said lever arm.

In testimony whereof I affix my signature in presence of two witnesses.

' FRANK J. WATERS.

the strap;

Witnesses:

ARTHUR. I. Jormson, WARREN R. Irmon.

The combination of a circular disk rota and slidable on its