US365799A - Self feeding cotton peess - Google Patents

Description

(No Model.) 7 Sheets-Sheet 1. M. R. DAVIS.

SELF FEEDING GOTTQN PRESS.

Patented July 5, 1887.

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M. R. DAVIS.

SELF. FEEDING COTTON PRESS.

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' M. R. DAVIS.

SELF FEEDING COTTON PRESS.

Patented July 5,1887.

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M. R. DAVIS.

gELP FEEDING COTTON PRESS.

7 Sheets-Sheet 4.

Patented July 5, 1887.

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(No Model.) 7 Sheets-Sheet 5.

M. R. DAVIS. SELF FEEDING COTTON PRESS.

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M. R. DAVIS.

SELF FEEDING COTTON PRESS.

.No. 365,799. 9; Patented July 5, 1887.

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(No Model.) 7 Sheets-Sheet 7.

M. R. DAVIS.

SELF FEEDING COTTON PRESS. No. 365,799. Patented July 6, 1887..

Ilnrirnn Srn'rns Parent Darren.

MIGAJAII It. DAVIS, OF PINK HILL, TEXAS.

SELF FEEDlNG GD'ITQN PRESSQ SPECIFICATION forming part oi Letters Patent No. 365.799. dated duly 5. 1887.

Application filed December 29, 1886. Serial No. $22,913. (No model.)

To all whom it may concern.-

Be it known that I, MIOAJAH It. DAvIs, a

citizen of the United States, residing at Fink Hill, in the county of Grayson and State of Texas, haveinvented certain new and useful Improvements in Self'Feeding Cotton-Presses; and I do 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, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention is a cotton-press; and'it consists in the parts which will be hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is atop plan view of a machine embodying my invention. Fig. 2 is a side elevation. Fig. 2% is a detailed side elevation, partly in sections, of one of the two F-shaped locking-levers which engage in the frame for limiting the movement of the rotary cotton-boxes and look ing the same. This view also shows a side elevation of one of the two drums which alternately receive and pay out the chains which actuate the rotary boxes. The outer ends of these chains are secu' red to the lF-shaped lever. Fig. 3 is a horizontal section on the line 2 z of Fig. 4.. Fig. 4 is a longitudinal vertical section on theline a: 09, Fig. 1. Fig. 5 is a crossscetion on theline y 3 Fig. 1. Fig. (iis a detail plan view oftheclutch mechanism, pump, pulley, 8m. Fig. 6%- is a side elevation of the pumpingmechanism. Fig. 7 is a detail perspective view of the trigger for actuating the water-valves. Fig. 7 is a detailed side elevation of a clutch and the arms and lever for actuating the same. Fig. 8 is a perspective view of the means for reversing the clutches whereby a reverse movement is imparted to the rotary feed-boxes. Fig. 9 isadetail, partly in section, of the intermittent rotary mechanism foractuating the clutches which engage the chain. The devices shown in this view (the arm J also serves to unlock the F-shaped lever so that the cotton-boxes may rotate. Fig. 95 is a top plan view of the camwheel, its

shaft being shown in section.

one end,and A two corner-standards on the opposite end.

A A are four tall standards near the center of the machine. To the rear standards, A is secured a semicircular wall, B. A semicircular wall,B,is also mounted upon the front standards, A.

D O are two alternate rotary boxes in and through which the cotton is alternately received and discharged into the press proper. These boxes are mounted upon the front end ofashaft, C. Said shaft extends lengthwise of the machine. Its rear end is mounted in blocks O" @,which are secured, respectively, upon the front transverse frame-pieces. The boxes consist of two rectangular compartments of equal size rigidly united.

' D is a box on the .rear part of the machine, in which the cotton is pressed.

Immediately under the front wall, B, is a rectangular opening, B

B is an opening under the wall D.

E is the cylinder horizontally mounted on the front side of the machine and lying lengthwise thereof.

E are compressor-slats, and E a transverse block. Said slats are secured to the block E This block is secured to the piston-shaft E Each box 0, the con1pressing-box D, and the openings B"Bare of uniform height and Width. The compressor-block E is of a size adapted to move freely lengthwise through said openings, box 0, and into the compressor'box D.

e is a small roller journaled near the bottom of the compressor-block E. This roller is adapted to roll upon the floors of the boxes G and D, its object being to hold the block and its piston-rod in a horizontal line and prevent .the former from coming in contact with the floors in its reciprocal movement. The compressor block consists of a-strong transverse beam, E, having a series of strong vertical parallel bars, E, secured to its outer side.

On the inner sides of the compressor-box Dis a longitudinal series of spur-teeth, D. These teeth incline to the rear of the machine, so

that the cotton may move freely into the box, but will be prevented from returning or expanding outward against the compressor-block after compression of the bale.

D represents the floor of the box D. This movable in the grooved cross-block ff, Fig. 3.

The other sides of said doors rest, respectively, in rabbeted corners d. Strong vertical slats g are secured to the inner sides of the rear transverse frame-pieces f f, Fig. 4. These slats constitute the outer ends of the box D. Transverse blocks h h are respectively secured to the top and bottom of the frame-pieces,

ff. vThe blocks h h are about half the width ot'the piecesf. The outer ends of the slats g extend above and below the piecesf, whereby transverse grooves are formed. The outer inner ends of the hinged top and bottom pieces, 1) D are provided with transverse pieces 1" i, which fit into the groovest' 73 when said hinged portions are closed. A transverse block, E, is interposed between the outer end of the piston E and the slats E. The block E is provided on one side with two arms, e e. One of these arms is on the upper side of the block and the other on the lower side thereof. (See Figs. 3 and 4.) The space between the framepieces A A is sufficient to admit said arms. 0.

These arms extend forward and lie between'the two front parallel framepieces A and A when the piston is in its cylinder, whereby the eompressorhead and its piston are prevented from turning. Said arms also serve to hold the head in a fixed relative longitudinal post tion when said head receives its initial inwardmovement.

E represents a grooved wheeljournaled immediately'to and below the i iner end of the cylinder. This wheel is a guide arid support for the piston-rod. Said wheel is'journaled in two shorta rms, SA, extending outward from chine.

v inder.

the cylinder.

(See Fig. 6.)

F is a wire-covered cylinder or feed-roll provided with end journals, F F, which arejournaled in the bottom of slots F in side framepieces, F on the upper front side of the madotted lines, Fig. 2. Cog f meshes with small cogf The cogf meshes with eogf which in turn meshes with the cog f, whereby when the roller F, cog f and the sprocket-wheel f 8 are rotated in the direction of the arrow the small cog f i is rotated outward and the cogs f and their rollers rotated inward, so as to draw the cotton between said rollers and force the same through the opening 13 in the front wall, B, (see Fig. 4,) and thence into one of the boxes 0. The cylinder F rotates in the same direction as the upper inner roll, F, and the rotary motion of the roll F is the same as the roll F FT represent a feed-table located immediately below the cylinder F. It willthus be observed that cotton fed under the cylinder F is drawn between said cylinder and its roll F, with which -it is in frictional contact, and thence drawn between the rolls F" F The cotton is slightly compressed byits passage between the rolls, and is foreedinto the upper receiving-box, O, in layers.

The letter G represents a shaft provided on its outer end with a baud-wheel, G, keyed or otherwise secured thereto, the inner end of said shaft being provided with a crank-wheel, G", Fig. 6}. The crank-pin G of this wheel is connected to a grooved block, G

Gr represents the pumps, and G the plunger-rods thereof. The outer ends of the plunger-rods are connected to a rectangular frame, G The grooves in the block aforesaid engage the vcrticalside pieces of this frame and the block slides therein when the wheel G is rotated, whereby reciprocating movement is given to the plungers. The wheel G is keyed or otherwise secured to the shaft. Said shaft is mounted in bearings G G".

H H represent two flanged drums loosely mounted on the shaft G. The adjacent sides of these drums are provided with clutch-teeth h h. A double-face clutch, h", is keyed to the shaft between the drnnrclutches h h.

h is a bar pivoted at h" between the drums. The loose end of the bar is provided with a longitudinal slot, h, which engages a crankpin, h, on the upper end of a wheel, h The under side of the bar h" is provided with a spline, which engages a circumferential groove in the double-face clutch h whereby alateral movement of the bar will throw the double clutch in engagement with one or the other of the drum-clutches. There is sufficient'space, however, on the shaft between the drumclutches for the double-face clutch to rotate freely without engaging either drumclutch,

' said spline and groove being shown in dotted lines, Figs. 6 and 9. v

H represents a spiral spring secured on a short pin, H Said spring is provided with an arm, H. The spring and arm serve to prevent the lateral inward movement of the drum H and clutch h on the shaft G. Keyed to the shaft on the inner side of the drum H" is a collar, I, and clutch 1.

1 represents a clutch, and I a sprocketwheel. 'Said clutch and sprocket-wheel are rigidly united and loosely mounted on the shaft G. t

1* is a circumferential groove in the clutch I.

l is a short rock-shaft secured to the frame by straps i z". Said rock-shaft is provided with two upwardly-projecting arms, 2%". (See Figs. 6 and 7%.) The outer inner sides ofthese arms are provided with pins i 2", which engage the groove 1. 1

l is a downwardly-projecting arm, which is a right-angled continuation of the rockershaft, 1 By means of the arm 1 the shaft 1 and its arms and pins, the clutch I, and sprocket-wheel I may be thrown in or out of engagement with the clutch 1. An endless I sprocket chain, 1, Fig. 2, engages the sprocketwheel l and the sproeket-wheelf on the outer end of the feed-roller F. It will thus be observed that when the shaft G is rotated and the cl uteh I thrown into engagement with the clutch l the sprocket wheels, gear wheels, and feed-rollers are set in motion for the pun pose of drawing the cotton through the rolls into the upper rotary box, 0. When the box is full, the clutches I and I are disengaged, (by turning the arm l,) and the rolls thereby stopped until the filled box is rotated. to the bottom and the lowerempty box turned to the top, when the feed movement is again set in motion to fill the top box.

1 represents an'arm secured at its upper end to one side of the roller-frame. The lower end of this arm is provided with a roller, ll, which lies and presses against the sprocketchain 1, so as to'hold said chain taut.

The letter J represents a tube or sleeve provided on its upper end with a collar, J rigidly secured thereto. To the under side of this collar is pivoted an end of an arm, J, whose function will be hereinafter specified.

J is a shortlaterally-extending arm secured midway on the sleeve J. This arm is provided with an opening for the reception of the upper end ot'a vertically-movable pin, J.

J represents a collar rigidly secured to the lower end of the sleeve J. This collar is provided with an opening in vertical alignment wit-h the opening in the arm J. The lower & end of the pin J fits into the opening in the collar J. The pin J"has a vcrtically-reciprocatingm'ovement in the openings aforesaid, and it is provided with shoulders to limitsaid movement.

K is an intermittent rotary rod provided on its upper end with a small erank-wheel, h, rigidly secured thereto. This wheel is provided with a-pin, h", which engages the slot h in the loose endof the pivoted bar It. The lower end of the rod K is mounted in a baseblock, J, which block is mounted on the framepiece A.

K is a cam wheel rigidly secured on the rod K between the collar Jand block J. A plan view of this cam-wheel resembles the figure S. The two hooked projectionsj j of said cam are adapted to alternately engage the lower end of the pin J whereby the sleeve J and rod K. are momentarily locked, so as to rotate said rod 0ne-fourth ofa revolution. Said rod, its crank-wheel h, and the cam-wheel K have an intermittent rotary movement. They are turned one fourth of a revolution at a time. The camis alternatelyacted on by an arm (which will be hereinafter specified) and the lockingpin Jfiwhich causes said cam to turn with the rock movement of the sleeve. The rotary movement of the cam is in the direction of the arrow Fig. The outer edges, j j, of the cam are thin, and they taper upward to thebody, which is thick. By this construction the lower end of the pin J is enabled to lock with one of the projections and then be moved forward and carried up the inclined wedge-shaped side ofthe cam,and thendropped by its own weight into one of the spaces 4, so as to-engage the cam and turn the same when the sleeve is rocked.

The letter L represents a plate, which is secured to the top of the frame-piece A. A vertical stud, L, is centrally fixed to theplate L. L is asleeve, which is mounted on the stud L. This sleeve is provided with two arms, L L".

L is an arm jointed at one end to the outer end of arm L", and also jointed at itsother end to a projection on the-collar J". L is an arm jointed at one end to the arm L. The outer end of the rod L is provided with a bent-up end, L Said bentnp end is adapted to alternately engage one of the two notches in the cam-wheel K.

L is a spring for holding the arm L in en gagement with said cam-wheel.

' M represents an arm bolted to the rear side of the compressor'block E", Fig. 3.

M is a short right-angled arm jointed at one end to the outer end of the arm M. A spring, m, engages the arms M M, .so as to normally hold them at right angles, as shown. This spring, however, permits the short arm M to turn slightly outward, so as to slightly yield when it engages the arm L on the outward movement of the eompressorblock.

N N N N represent four water-pipes in communication. These united pipes constitute a rectangular frame, Fig. 6. N is also a water pipe, which communicates with the pump G". The pipe N connects the two parallel pipes N N". The pipe N has an extension, N 'A four-way pipe, N connects the pipes N N N" is an elbow connecting the pipe N" with the pipe N.

N is a short pipe connecting the pipes N N.

N is astop-valve in the pipe N This valve is automatically opened and closed, so as to admit water to the cylinder and pump the same therefrom, all of which will be hereinafter specified.

N is a valve in a short pipe, N.

N is the induction-opening in the four-way pipe N There are a series 'of stop-valves, n, in the series of pipes, which are normally open, as indicated in Fig. 6.

The letter 0 represents a rod provided with two outer collars, O O, fixed thereto. (See Figs. 3 and 7.) O is a middle collar loosely secured on said rod.

0 O are spiral springs on the rod O. Each spring is interposed between the middle and outer collars, respectively.

0' is a toothed rack-bar, having its rear in: ner end secured to the loose collar O".

O is a vertical rod provided on its upper end with a right-angled plate, O. This plate is engaged with a cross-arm piece, a, which actuates the stop-valve N. The arm a lies against the inner side of the plate 0. The rod 0 and its plate 0 are adapted to rotate or rock one-fourth of a revolution, and thereby alternately open and close the valve N" by turning the valve-arm if.

P represents a rod, which is secured to the fixed collars O O at the points 1) p. This rod P is provided with an outer rectangular end, P, which is provided with two notches, p in its upper side.

P is a pinion on the lower end of the rod O This pinion engages the tcetlrin the. rackbar 0".

P is a collar fixed on the rod 0 above the pinion P". This collar has a side projection or short arm, to which is jointed the inner end of a notched bar, P. This bar is provided with two notches, p and'p, on its underside.

The bars P and P cross each other at right angles, and each is alternately adapted to slide in the others notches. Each bar has a longitudinal movement. The bar P is mounted, so that when one of its notches is in a line or immediately over the under bar, P, the latter bar may move freely through the notch of the former. The rod P is suspended by and slides in a staple secured to the under side of the frame-piece A. (This staple is not shown.)

The trigger-movement specified in this paragraph is for actuating the valve N by turning its handle or arm a. Phe initial movement is given the trigger by a chain, P One end of this chain is secured to theinner end of the rod 0. The other end thereof is secured to the rear side of the compressor-block E; The arrangement is such that when the piston and its compressor-head and slats have been driven out to nearly the full length of the stroke the chain P is straightened and drawn inward, and the rod 0 also drawninward. This move ment of said rod draws the rod .P and its binotched part P inward, the smooth part of the rod P passing through the notch p in the rightangled bar \Vhilc this action is taking place, the collar 0 is being drawn inward and compressingthc spring 0 between said collar 0 and the middle collar, 0", the middle collar, O, for ti time being stationary, it being held by the rack-bar O, which bar in turn'is held by the pinion P, said pinion being held and locked by the bar P, the rear notch of said bar P being engaged and prevented from moving by the bar P. \Vhen, however, the compressor-head has passed out to its extreme extent, the bar Pwill have been drawn through the notch 1) until the notch 12 of the bar P lies immediately under the bar P The bar P is then released and quickly draws back through the notch 12 of the bar P. The movement of the bar P is effected primarily by the action of the compressed spring 0, which forces the rack-bar O inward, (in the direc, tion of the arrow Fig. 7,) thereby turning the pinion P and rotating the shaft 0 one'fourth of a revolution, turning the valve N so that the water may be pumped from the cylinder and the piston and compressor returned. \Vhen the compressor starts on its return, the chain sags and permits the rod 0 and the compressed spring to resume their normal position, as indicated in Figs. 3 and 7. On the return-stroke of the compressor-head, when thestrolcc is nearly completed, the rear side of the cross-block E of the compressor 'is brought into contact with the inner end of the rod 0, whereby said rod and the rod P and its binotched end P are forced outward. This action compresses spring 0 and forces the bar P through the outer notch, 12 of the bar P until the inner notch, 12, of the bar P is immediately under the bar P While this outward movement of the rods 0 P and the biuotched piece P is taking place the spring 0 is being compressed and producing an outward tendency to the'loose collar 0 and the rack-bar O. This outward tendency of the rack-bar in turn produces a pressure on the P, its shaft O ,collar P", and notched bar P \Vhen, however, as before stated, the notch 12 in the bar P is im'mediatel y under the bar P, said bar is released and forced outward by the spring 0 acting through the medium of the rack'O, its pinion, shaft, and collar.

Pf represents therhousing provided with openings for the reception of the notched bars P P", and P are straps for engaging the housteeth of the pinion .ing and connected parts to the side of the cylinder.

The front part of the cotton boxes C O is provided with a circular flange, Q, secured thereto. (See Fig. 5.) On the periphery of this flange are two F-shaped levers, Q Q", each on opposite sides. The body portions of these levers are curved, so as to conform to the curve of the flange to which they are scoured. The small ends of the levers are pivoted to the flange, so that the two-forked points thereof shall extend outward. To the loose end of each lever is secured a separate chain, Q, Q, each equal in length to one-half the diameter of the flange Q, The outer ends of these chains pass through an opening, Q, in one side of the front wall, B, and each of said outer ends is respectively secured to the loose flanged drums H H on the shaft G. vTwo flanged pulleys, Q Q, are jonrnaled in the sides of this opening. Each pulley serves as a guide for one of the chains Q Q.

The box-flange Q is provided with a series of projections, g, which are placed in conven-- ient places to hold the chains Q Q on the pe rod J (see Figs. 2, 2i, 5, and 8) extends riphery of said flange. The inner end of the through the wall -opening Q and it is provided with a bent piece, Q,whose body lies at right angles to the rod J. This bent piece alternately serves to disengage the levers from their locked position with the pulleys Q The two right-angled projections q (1 of the lF-shaped lever Q are adapted to close in on their respective pulleys and lock the boxes and at the same movement force the piece Q and its arm J outward. V

The operation is as follows; When the boxes are thus locked by one of the levers Q Q the lever 1, Figs. 6 and 7%, is turned so as to engage the clutches I I and the feed'rollers are thus set in motion, whereby the box on top may be filled with cotton. It should be understood that the band-wheel G rotates continnously in the direction of the arrow Fig. 6. While the top box is being filled the lower box (which is presumed to have been previously filled) is in a line with the compressorhead. The action of the pumps during the filling of the upper box forces water into the outer end of the cylinder, thereby forcing out the piston and driving the compressor-head through the lower box and compressing the cotton in the box D, Fig. 4. As each bale is pressed,it is tied offor bound, and then dropped through the lower hinged door, D. \Vhen the compressor-head has reached the outer end of its stroke, the trigger, hereinbefore specified, is actuated to reverse the position of the valve N, Fig. 7. By the changed position of said valve, and by manipulating the Water-Valve N', the action of the pumps on the cylinder is reversed and the water withdrawn, so as to return the compressor-head and draw it back out of the lower box. During the time the compressor-head is passing outward and backward the top box is presumed to'be filled and ready to be turned to the bottom, so that its contents may be pressed. On the return-stroke of the piston and compressor-head the arm M (see Fig. 3)encounters the arm L,whereby said arm is turned and with it the arms'L L.

This movement of arm L slightly turns thesleeve J and its top and bottom collars, J J". The collar J by this movement forces inthe rod J andthe bent piece Q, Figs. 5 and 8,

- on the end of said rod, which action disengages one of the levers Q Q from its locked position with its pulley, thereby leavingthe bo'xes free to make the next half-revolution. \Vhile the boxes are locked, (they are alternately locked by the F shaped levers Q (2 the top box is being filled and the'contents of.

the lower one being compressed. It is therefore essential during this operation that the double-faced clutch h, Fig. 6, should be out of engagement with both drum-clutches, at

the same time permitting the pump mechanism to work freely to force the piston out and in-that is to say, the boxes, drums, and connectingchains lie idle while the upper box is being filled and the contents of the lower box compressed. When one of the levers Q Q is disengaged and unlocked from its pulley, the shaft K and wheel h Figs. 3 and 9, are rotated one-fourth of a revolution by the actionv of the arms M M L L, and the lever 7?, Fig. 6, which actuates the double-faced clutch, is turned so as to throw said clutch in engagement with one of the drum-clutches, so that the rotary movement of said clutches will effect the drawing out and winding of one of the box-chains on its drum, while the chain on the companion drum-will be paid out and unrolled from its drum. \Vhen the lever Q or Q", attached to the chain which is being wound,

reaches its pulley, (the boxes then being in a line, one above the other,) the ends q q (see Fig. 2%) of said lever are drawn into the frameopening Q, thereby forcing out the piece Q," and rod J and again locking the boxes. Only one lever is locked at a time, and the boxes first rotate to the right and then ,to the left. Strong rods R R brace the frame of the machine. The outer ends of these rods are threaded and provided with bolts.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination, with two rotary cottonboxes having open ends, of a compressor-box having an open end in communication with one of the rotary boxes, a cylinder and piston-rod, said rod being in a line with the com pressor-box and provided with acompressorhead, substantially as described.

2. The combination of the feed-rolls F F F,

each provided with an end cog-wheel, the

cogs of the rolls F F -being engaged, an independent cog-wheel in engagement with the cogs of the rolls F F, a sprocket-wheel secured to the outer end of the roll F, the main shaft G, the sprocket i an endless sprocketaforesaid, and a clutch for engaging thesprocket-wheel 1 with its shaft, substantially as described.

3. The combination of the shaft G, provided with the sprocket-wheel I and grooved clutch I, rigidlyunited and loosely mounted on said chain in engagement with the sprocket-wheels shaft, the clutch l, fixed to said shaft, and of the shaft 1 having handle I, said shaft 1 being provided with arms and pins for engaging the grooved clutch aforesaid, whereby the clutch 1 and its sprocket-wheel may be thrown in and out of gear, substantially as described.

4. The combination of the rotary shaft K, provided on its lower end with the S-shaped tapering cam K, the sleeve J, provided with two collars having openings in vertical alignment, a shouldered pin mounted in said opeir ings, the rod L having its outer end in pivotal' engagement with one -0t the collars on the sleeve aforesaid, the spring-actuated rod L, adapted to alternately engage the notches in the cam, and means for actuating said arms, substantially as described.

a 5. The combination of the rotary shaft K,

provided on its lower end with the S-shaped tapering-cam K,,the sleeve J, provided with two collars having openings in vertical alignment, a shouldered pin mounted in said openings, the rods L L, having their outer ends in engagement, respectively, with one of the sleeve-collars and the cam aforesaid, the pivoted arms L L, rigidly united and being at right angles, the outer ends of said arms being jointed to the inner ends of the rods aforesaid, substantially as described.-

6. The combination of the compressor-head provided on its front side with the arm M, the outer end of said arm being provided with a spring-actuated arm jointed thereto and normally at right angles therewith, the united pivoted arms L L at right angles .to' each other, the rods L L, the sleeve J, provided and combined substantially as specified.

7. The combination of the rod 0, provided with the rigid collars O O, and the loose collar 0 also provided with the spiral springs 0* 0 the toothed rack-bar 0", having its inner end engaged to the loose middle collar,0, the rod 0 provided on its lower end with the pinion P, said pinion being in engagement with the rack 0 the top binotched bar, P jointed to an arm on the rod 0 and-the lower binotched bar, P, secured to the collars O 0 substantially as described.

8. The combination, with the compressorblock E rod 0, and connecting-chain P, of the collars O 0 rigidly secured to said rod, the loose middle collar, 0 and spiral springs O O on. said rod, the toothed rack-bar O", having its inner end connected with the loose collar O, the rod 0*, provided on its lower end with the pinion P, said pinion being in engagement with the rack O", the top binotched bar, P jointed to an arm on the rod 0 and the lower binotched bar, P, secured to the collars O 0 substantially as described.

9. The combination of the rod 0, provided withthe rigid collars O O, and the loose middle collar, also provided with the spiral springs 0 0 the toothed rack-bar 0, having its inner end engaged to the loose middle col- I lar, O", the rod 0, provided on its lower end with the pinion P said pinion being in engagement with the rack 0 the binotched bar'l, jointed to an arm on the rod 0, the rod P, secured to the rigid collars O 0 and the binotched bar P,formed on the outer end of the rod P, substantially as described.

10. The combination of the rod 0, provided with rigid collars O O", and the loose collar 0 also provided with the spiral springs 0 0 the toothed rack-bar 0, having its inner end connected to the loose middle collar, 0", the rod 0, provided on itslower end with the pinion P said pinion being in engagement with the rack O, the top binotched bar, P jointed to an arm on the rod 0, the lowerbinotched bar, P, secured to the collars 0 0*, the plate 0 secured to the upper end of the rod 0*, and the valve N", provided with the arm a, said arm being in engagement with the plates-O, substantially as described. In testimony whereofI at'fiX my signature in presence of two witnesses.

MlGAJAH R. DAVIS.

Witnesses:

R. W. Yarns,

S. W. PORTER.

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