US437933A

US437933A - Ernest w

Info

Publication number: US437933A
Authority: US
Publication date: 1890-10-07
Anticipated expiration: 1907-10-07

Description

(No Model.)

' E. W. NAYLOR. HYDRAULIC PRESS.

No. 437,933. I Patented Oct. 7, 1890. i

11719 HUN.

SC/7L 34 [0 gwmowtoz UNITED STATES PATENT OFFICE.

nnnnsrw. NAYLOR, or New YORK, N. Y.

HYDRAULIC PRESS.

SPECIFICATION forming part of Letters Patent No. 437,933, dated October 7, 1890.

Application filed .Tune 11, 1889. Serial No. 313,949. (No model.)

To all whom it may concern.-

Be it known that I, ERNEST WV. NAYLOR, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Hydraulic Presses, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to presses which are adapted to be operated by fluid or other pressure, and its object is to provide means for intensifying or multiplying the pressure on the main ram after the initial pressure thereon has expended its power. To this end my invention consists of an auxiliary cylinder secured to the main cylinder of an ordinary hydraulic press, said auxiliary cylinder having two rams working therein of unequal diameters, the smaller of the two passing through the head of the main cylinder into the fluid-space therein.

In order that my invention may be more clearly understood, I have illustrated it in the accompanying drawings, and will proceed to describe the same.

Figure 1 represents a vertical central section of my improved press. Fig. 2 is a plan View of the same.

The same letters and numerals of reference indicateidentical parts in both the figures.

In the drawings, 1 1 represent the supporting-frame of the press, which may be of the ordinary construction, to which is secured the main cylinder E, open at one end and provided in its side near the top with a port 0. In the cylinder E is a ram E, closely fitting the bore of the cylinder and having in its inner end a cavity E Secured to the closed end or head of the cylinder E is an auxiliary cylinder H, having ports A and B near its ends. In the auxiliary cylinder His the usual piston or ram D, of a diameter equal to the bore of the cylinder, to which is socured a ram F of smaller diameter, which passes through the head of the cylinder, as shown, in line with the cavity E of the ram E.

The operation is as follows: The fluid or other pressure being admitted into the cylinder or rain E from any suitable valve through port 0, forces down the ram E upon the work until the pressure of the fluid in the cyllinder of ram E is overcome and the ram will move no farther. The pressure is then admitted to the ram D through port A, which forces down the ram D, and with it the small rain F, which, acting upon the fluid in the ram E, compacts or intensifies the same, and thereby causes it to exert an increased pressure on the main ram E. \Vhen it is desired to have the full stroke of the rain E at the intensified pressure after the first stroke of the ram D has been made, the pressure is admitted at port 13, thereby lifting the ram D, pressure at the same time being admitted at port O to fill the space caused by the withdrawal of the ram F, when pressure is again admitted at A, and so on through the entire stroke of ram E.

While I have shown and described my improved press as provided with but one auxiliary or intensified ram, I do not wish to be confined thereto, as it is obvious that the main ram may be provided with two or more intensifier rams, as desired, without depart ing from the principle of my invention, in which case a press of great and varied power would result.

Having described my invention, what I claim, and desire to secure by Letters Patent, is

1. As a means for increasing the power of hydraulic presses, the intensifier herein described, consisting of a suitable cylinder secured to the main cylinder of the press and provided with a ram or plunger which is forced through the head of the main cylinder into the liquid already therein, and thereby intensifying the pressure, substantially as described.

2. As an improvementin hydraulic presses, the combination, with the main cylinder or ram, the plunger of which is provided with a central cavity in its inner face, of an auxiliarycylinder secured to the head of the main cylinder and having two plungers of unequal diameters working therein, the smaller of scribed, I have hereunto set my hand this said. plungers adapted to enterthe fluid-space 7th day of June, 1889.

of the main cylinder in line with the cavity 1 in the main plunger, substantially as and for ERNESI NAYLOR' 5 the purposes described. Witnesses:

In testimony that I claim the foregoing im- ADOLPH HESS,

provement in hydraulic presses, as above de- WHEATON S. LOWRY.