US1005225A - Valve mechanism for steam hydraulic presses. - Google Patents

Description

11. 1. JENSENIUS. VALVE MECHANISM FOR STEAM HYDRAULIC PRESSES.

APPLICATION FILED DEC. 21, 1510.

Patented 001. 10, 1911.

4 SHBETSfSHBET 1.

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H. A. JENSBNIUS. VALVE MECHANISM FOR STEAM HYDRAULIC PRESS'ES.

' APPLICATION FILED DBO. 21, 1910. I 1,005,225.

Patented 006. 10, 1911.

. 511161120? an4 jnfieniaa H. A. JENSENIUS. 4 VALVE MECHANISM FOR STEAM HYDRAULIC PRESSES.

- APPLIOATION FILED DBO. 2 1, 1910 1,OO5', 225.' Patented 001; 10, 1911.

4 SHEETSSHEET 4.

HERMAN A. JENSENIUS, OF PHILADELPH IRON WORKS, OF CAMDEN, NEW JER IA, PENNSYLVANIA, ASSIGNOR TO CAMDEN SEY, A CORPORATION OF NEW JERSEY.

vaLvn MECHANISM FOR STEAM HYDRAULIC PRESSES.

. Specification of Letters Patent.

Application filed December 21, 1910. Serial No. 598,575.

' To all whom it may. concern."

Be it known that I, HERMAN JEN- snN- os, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Valve Mechanism for Steam Hydraulic Presses, of which the following. is a specification.

One object of my invention is to construct the valve operatlng mechanism'ofa steam hydraulic press so that the valves can be manipulated by lever mechanism in order to cut oil the pressure at any point indicated by the pointer of a hand lever; the mechanism being so controlled by another hand lever that the press can be used either as a press having a slow movement or as one having a quick'movement.

A further object of the invention is to construct the mechanism so that/the lever for increasing or diminishing the speed of operation is carried by a main operating lever so that the device is alwaysunder the control of the operator, although two'distinct lever mechanisms are used.

Inthe accompanying drawings Fi ure '1 15 21 view, .inielevation of a steam hy rai lic press illustrating-my lnvention; the steam cylinder being 111 section; Fig. 2, is an en" larged view of the valve operating mechanism; Fig.

and'6,

In the drawings,

A is'the press having an A is the main hycarry the upper frame Ah BB are the steam cylinders for returning the head to its normal position. Mounted in these'cylinders are pistons Z) connected by rods 6 to the head 0. so that, when the pressure in the hydraulic cylinder A is cut ofi, the pressure under the pistons in the cylinder B will raise the head.- form of a steam by This is the ordinary draulic press.

Located at any convenient point, at one side of the press, is a steam cyllnder (,p'referably of large area, having-a piston 0 connected to a rod 0, which extends through a frame C carrying a hydraulic cylinder D of comparatively small diameter. The' end of the rod G acts as the plunger for this cylinder D. A pipe-(Z forms a o0mmuni-' ration between the upper end of thecylinder 3, is a perspective view (if -the' valve operating mechanisimand Figs. 4, 5,'

are diagram views showing the valve operating mechanism in different positions.

this lever is connected to a link turn, is connected-to the-valve stem f of the steam supply valve F. ,The long arm of the D and the upper end of the main cylinder A of the press. Also communicating with this pipe 61 is a pipe e, leading from an air chamber. E, located at any convenient point near the press. In this pipe e is an air dome fluid, so as to direct it either from the cylinder- D, or to and from the chamber E.

F is the main steam valve.

G is the exhaust valve and I the pull back valve for controlling the admission of steam to the under side of the piston Z) in the cylinders B.

H is the steam supply pipe and J is the exhaust pipe, which may communicate with both the exhaust valve G and the valve I. The steam supply pipe H communicates with the main steam valve F and with the valve I. The steam from the steam valve passes through the ezihaust valve chamber G, and this chamber communicates with the steam passage 0. in the bottom of the steam cylinder C, and, by operating the valve, steam will be admitted to the cylinder C under the piston 0, or exhausted from the under side of the piston so as to operate the plunger rod O. The pull back valve I is connected by a pipe 5 to the lower portion of the cylinders B-B, so that steam will be admitted under the'piston 6 into the said cylinders to lift the head "a when released from the hydraulic pressure in the cylinder.

N is the main operating hand lever, pivoted at a to any suitable support, and this lever has two arms nn'*'. The arm n is pivoted to a floating lever M. and this fioating lever is connected some distance from the said pivot by a link P to a leverQ, pivoted at g to a fixed hearing The short arm of f, which, in

lever is connected by. a link 9' to the valve stem 9 of the exhaust valve G; On the rodor ram C is a cross head 0 having rollers c arranged to travel over each edge of the arm K; the'cross'head and the arm forming an automatic operating gear. The arm is pivoted at 70 to any fixed point, and, 111 the 'resen ins-nei iscnne e .oa more p t tac,t o ctd in It on the cylinder C. The upper end of the Patented Oct. 10, 1911.

arm 70 is connected by a link R to two links S-S'; the link S fixed point, and the a lever T. The lever is fulcrumed to a fixed being pivoted at s to a link S being pivoted to V 60 e, and 03 ls'a valve controlhng the'fiow of point at t and is, connectedmidway between the pivot and the fulcrum by a link-IF to the end of the floating "l'ever opposite to the point where it is pivoted to the arm n of the lever N.

By this construction, the valves-F and G are operated either by the hand lever, or by the automatic operating gear consisting of the head 0 and the arm K; one of these elements moving the valve gear without atfecting the other elements, as will be readily understood on referring to the "drawings.

' tween the steam pressure valve F. This movement will allow steam to enterthe cylinder (J under the piston c, and, as the piston moves upward, it forces the plunger head 0 up into the hydraulic cylinder D; at the same time the head 0 travels in contact with the arm K. This'arm is normally in 'an inclined position, asindicated in Fig. 2, and it forces the arm K in the direction ofits arrow and the link S in the direction of its arrow; lifting the link S, lever T, link T and the floating lever M, which, in turn, lifts the link P, lever Q; reversing the. previous movement of the=lever Q and causing the steam pressure valve F to close; eventually opening the exhaust valve G, thus bringing the mechanism to a standstill.

By this construction, if the hand operated lever N is moved to any point between the normal point w and the extreme pressure point :0, Fig. 2, to open the-steam inlet valve and to close the exhaust, the automatic gear will close the inlet and will eventually open the exhaust at a corresponding point in thestroke of the piston 0.- If, however, the piston c is allowed to move its full stroke, then the automatic gear automatically closes the steam inlet and opens the exhaust, as the upper endlc of the arm K is arranged at such an acute angle that it wiil'immediately reverse the position of. the valves, as shown in Fig. 6. If it is desired to open the exhaust by the movement of the hand lever N, then the lever is thrown toward the extreme exhaustpoint as, Fig. 2; causing the l-ink P to be raised and operating thelever Q so as to open the exhaust valve and close the steam inlet valve.

In order to operate the pull back valve 1,-

I mount a rock shaft V at the point indicated, and connect one arm '0 by a links" to the stem of the valve I. The short armo of their k shaft extends under a pin a,

in the"present.-instance, on the arm n of the hand lever N so that when the hand lever N is moved toward the extreme exhaust position w, the short arm 1: of the rock shaft V will be, depressed. Consequently, the valve stem 2' of the valve I will be raised; allowing the live steam to pass through the valve to the pipe 11 and t9 the under side of the piston Z) in the cylinder B; lifting the head a of the press. 4

To operate the pull back valve independently of-the mechanism, I pivot a second lever W at w to the hand lever N. The

arm '10 of the lever W is connected by a link 10 to an arm a of the rock shaft V, so that, when the lever W is moved in .the direction of its arrow, irrespective of the position of the lever N, it will immediately lift the valve I; allowing the steam to enter the cylinders B under the pistons 12, as

shown in Fig. 5. The object of this construction 1s to provide means to allow a constant pressure of steam in the cylinders B,

under the pistons, so that when the hand lever N'is moved to pressure and the steam piston 0 is raised, the position of the abo e described mechanism is such as to allow constant steam pressure on theunder side of the piston in the cylinders B; causing the head of the -press to be .raisedwithout throwing the hand lever to exhaust, and,

as soon as the lever WV is released, it assumes its normal position, and, in order to cause the steam to enter the cylinder B the lever N must be th'rowniover to the exhaust position so that its armj'n will actuate the lever V and raise the valve I. If the lever N is thrown 'to exhaustbefore the head 0 of the automatic gear act'uates the arm K,

then the automatic gear does not act to shift the valves; the shifting being done entirely through the medium of the hand lever N.

In order to cause the portion 7: of the arm K to actuate the exhaust v'alveG so as to throw said valve G to exhaust, I 0011- nect a link G to the lever T,-which is slotted at the lower end so as to allow it to have a certain amount of lost motion; the pin' g connecting'the link G to the lever Q and passing through'the slot 9? so that while the lever T has a certain amount of movement, as it 1s 'ra1sed. .w1thout causing the link G to act, as soon'a'sthe head ct acts on the portion is of the arm K the'link G acts to raise the valve G to allow steam in the intensifier cylinder C 'to exhaust and in order to move the valve"--I-so that it will admit pressure to the cylinders B, I connect a lever-I, which is pivoted at 2' to a fixed point to the lever T through a link I and this lever I is connected to the valve rod ithrough a slotted link i and a pin on the valve, or valve stem, passes through the open when the plunger head 0 is moved otherwise it acts as an ordinary when the head is traveling on the extreme ti on admitting (.'onsequently, the pressure at a point correslot so that this lever mechanism does not zfc't'while the head a? is traveling on the main portionof the arm K, but will act only upper portion is, when it Will partly lift the valve I so as to bring it to steam posisteam to the cylinders B. Thus the mechanism is automatically brought to a standstill.

The valve d, in the pipe d, leading from the hydraulic cylinder D to the hydraulic cylinder A, is so constructed that it will down in the cylinder D so as to exhaust the pressure in the cylinder A. When steam is admitted to the under side of the piston b in the cylinder B to raise the head a, and when the lever is thrown full to exhaust, then the valve (Z is raised so as to allow the fluid to pass from the cylinder A through the pipe (Z into the pipe e to the chamber E, where it remains under pressure to be used when the pull back valve is shifted so as to exhaust the steam from the under side of the piston 7). Then the pressure in the chamber E overcomes the pressure in the cylinders 13 and the head a is forced down by fluid entering the cylinder A and when the piston c, in the main steam cylinder C, is raised, the pressure in the cylinder A of the press is materially increased, while the valve in the chamber D acts as a check to cut off the How of fluid in the chamber i allowing the fluid to pass entirely under extreme pressure to the cylinder A of-the press. This valve (1 is opened through the medium of the lever y, rod y, and mechanism connected to the hand lever N, and is only opened mechanically when the said lever is near the extreme exhaust point, check valve,

Thus, by the above described mechanism, it will be seen that the press can be operated solely by operating the single lever N. The movement of thelever toward the extreme pressure point will govern the" downward motion of the head carrying'the upper die of the press, as the automatic gear will automatically stop the movement of the piston of the steam cylinder or intensifier, and,

sponding to the point to which the operating leveris moved, and, on operating the lever N, the piston will return to its normal positiombut, on moving the hand lever to the reverse position, or exhaust, the parts will be returned to their normal position, so that, in pressing,- the speed of the movement of the press will be dependent upon'the movelnent of the hand lever from a central position to pressure and'eXhaust, but, if a quick movement of the head-cari ying die, or hammer, is required, then the lever is actu' ated so as to raise the pull back valve to rocated rapidly.

allow steam to constantly enter the cylinders B, so that when the lever N is moved to pressure position, whilethe lever \V is held so as to open the valve I, it will place con stant pressure on the piston Z) of the cylinders B and the die or hammer will be recip- By pivoting the arm of the automatic gear, as shown, thefirstpart-of the stroke will move the arm a greater distance than the latter part of the movement of the head,

.and, to compensate fort-his, I connect the upper end of the arm by alink to a pivoted lever S; connecting the link, also at the same point, Witha link S, which is coupled to'a lever, in turn coupled to the floating lever, which controls. the v'alveisb'that dure ingthe first while the arm of the automatic gear is moved a givendistance, t-he'lever S swings in the arc-of a circle; moving a greater distance laterally than vertically so that the link S is raised only a limited distance, ,considering the length of the movement of its pivot, and, as the-automatic gear" head nears the free end of the automatic gear arm, the lever S reachesa point where its vertical motion increases and the movement of the floating lever is practically equivalent to the movement of the head of the automatic gear.

I claim:

' l. The combination'in a steam hydraulic forging press, of a head carrying the die or hammer; a fluid pressure cylinder; 2. plunger within the cylinder 'carried'by thehead; a steam cylinder having a piston connected to the head, an intensified cylinder; a piston therein; a fluid pressure cylinder having a plunger connected to the piston; said fluid pressure cylinder communicating with the fluid pressure cylinder of the press; a steam supply valve and an exhaust valve communicating with the intensifier cylinder; a hand lever and cross head for actuating the said valves; a system of levers connecting the said hand lever and the arm with the valves, whereby the hand lever and the arm can op.-

erate the valves independently of each other;

part of the stroke of thehead,

a pull back valve communicating with the pull back cylinders; levers connecting the pull back valve with the main hand lever and a supplemental hand lever for lifting the valveto admit steam to the under side of the pistons in the pull back cylinders.

2. The combination in a steam hydraulic press, of a press; an intensifier cylinder; 3. fluid pressure cylinder; a plunger in the said cylinder actuated by stea-m in the intensified cylinder; steam and exhaust valves communicating with the intensifier cylinder; a pull back valve communicating with the pull back cylinders of the press; lever mechanism for actuating the said valves; a hand lever; a head on the pistpn rod of the intensifier cylinder; an arm pivoted to a fixed point and engaged by the said head'so that it will be positively moved in both directions by the said head; said arm being connected with the lever mechanism for operating all three valves. c,

3. The combination in a steam hydraulic press having a fluid pressure cylinder, a

pull back cylinder, and a steam intensifier.

press; lever mechanism for actuating the several valves; a head on the piston rodof the intensifier; anarm pivoted to a fixed point and engaged by the said head; the upper end of the rod being shaped to form a cam so that, when the head reaches the up per end of the rod; it will close'the steam valve and open the exhaust communicating with the steam intensifier .cylinder.

L. The combination in aIstea-m hydraulic press having as fiuid pressure cylinder and a steam pull back cylinder, of an intensifier cylinder having a piston and a rod; a fluid pressure cylinder less in diameter than the cylinder of the press; a pipe-communicating 1 c with the two cylinders; the pressure cylinder having a plunger connected to the rod of the intensifier cylinder; steam and exhaust valves communicating with the intensifier under the piston a pull backvalve communicating with the pullback cylinders. of the press, a hand lever and a head on the piston rod vof the intensifier cylinder; an arm located to be actuated byI-the head; lever connections betweenthe' arm,-the hand lever 'and the valve mechanism; a floating lever being one oftheelements of the said lever m'echa-nism; lever mechanism connecting the hand lever with the pullback valve so that it will operate when the hand lever is moved to the exhaust position; with a supplementalhand lever pivoted to the first mentioned hand lever and connected to the pull back valve so that when said lever is operated the pull back valve will be moved to a position to allow steam to enter the pull back cylinder continuously when the main hand lever is moved to pressure so that the hammer will strike a series of quick successive blows.

*5. The combination'in an intensifier, of a head on the intensifier; a pivoted arm engaged by said head as ittravelson the movement of the piston, of the intensifier; a floating lever; a valve connected to the floating lever; a swinging link,and a link connecting the said swinging link with the .upperend of the pivoted arm; and a link connecting the said swinging link with the floating lever 'sojthat, as the pivoted arm is moved by the head on the piston rod, the valve will be operated and the diiierential movement of the pivoted arm will be compensated for by the swinging arm and its connections.

6. The combination in a steam hydraulic forging press, of a head carrying a dim? or hammer; a fluid pressure cylinder; :1 plunger Within the cylinder carried by the head; an

intensifier cylinder; a piston therein; a fluid pressure cylinder having a plunger connected to the piston and communicating with the fluid pressure cylinder of the press; a steam supply valve; an exhaust. valve communicating with "the intensifier cylinder; a pull back cylinder; a piston therein; a pull back valve for regulating the flow of steam to and from the pullback cylinder; operat- I ing mechanism consisting; of a pivoted arm and a traveling cross head connected to the piston of the intensifier cylinder; hand operated mechanism; with lever and link mechanism-in which is afloating lever; the pa rts being so constructed that when the cross head raised it-will open the exhaust and will cut off the steam valve leading to the valve to steam,

In testimony whereof, I have signed my name to tlllSfipGClfiCfllZlOll, 1n the presence of two subscrlbing witnesses.

HER-MAN A.

Witnesses WM. E. Snore, VM. A. BARR.

JENSENIUS.

Gcpies of this patent may be obtained for five centseach, by addressing the Commissioner of Patents,

' Washington, D; C.

intensifier cylinder, opening the pull back 7

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