US1385378A

US1385378A - Pressure jojokr

Info

Publication number: US1385378A
Authority: US
Publication date: 1921-07-26
Anticipated expiration: 1938-07-26

Description

G. A. KNAAK.

PRESSURE MEMBER.

APPLICATION FILED APR. 9, 1919.

1,385,378. Paterited July 26,1921.

GEORGE KNAAK, OF MILWAUKEE, WISCONSIN.

PRESSURE MEMBER.

Specification of Letters Patent.

Application filed April 9. 1919. Serial No. 288,850.

To all whom it may concern Be it known that I, Gronen A. KNAAK, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certaln new and useful Improvements in Pressure Members, of which the following is a specification, reference being hadto the accompanying drawing, forming apart thereof.

This invention relates to pressure members and the object of the invention is to im; prove the construction of pressure members in the manner to be hereinafter described and claimed. I

Referring to the drawings which accompany this specification and form a part hereof, which drawings illustrate an embodiment of this invention, and on which drawings the same reference characters are used to designate the same parts wherever they may ap pear in each of the views, Figure 1 1s anelevation of the pressure member looking in the direction of the arrow on Fig. 2, parts being shown in section and parts being shown as broken away; and Fig. 2 is a vertical section, taken on the line 2-2 on Fig. 1, looking in the direction indicated by the arrows. 1

Referring "to the drawings, the reference numerals 1 and 2 designate the two sides of a pressure member box 3. The sides 1 and 2 are made from any suitable metal and are provided with corrugations as clearly shown by Fig. 2 of the drawings. Preferably the corrugations are concentrically arranged in the well-known manner and the sides 1 and 2 are provided with flanges 4 and 5. Heretofore it has been customary to solder the flanges 4 and 5 together and rely upon the corrugations to give the sides of the box flexibility so that the sides could bulge out and in with variations of pressure. The result, however, has been that more or less of the movement of the sides has been transmitted to and taken place at the edges 6 and '7 where the sides are turned to form the flanges 4 and 5 and the continued bendin of the metal at these edges has result in breakage. The principalobject of this invention is to dispense with an edge which can be subjected to bending movements. I accomplish this result by holding the sides land 2 in such a manner that all of the movements of the sides must be confined within the sides themselves.

In the construction illustrated by the drawings, the ordinary flanges 4 and 5 are shown united by solder 8 and clamp mem- 'member 11 between the two sides of the box against which the two sides can be firmly secured. The clamp members 9 and 10 may be/secured in any suitable manner as, for example, by bolts 12 and should have curved Patented July 26, 1921.

or flaring surfaces 13 and 14 so that the sides will not have to bend over sharp edges. The sides of the box are substantially tangent to the curved surfaces 13 and 14 of the clamp members 9 and 10, when the box is not bulged outwardly,-and, as the sides of the box are bulged outwardly tions of substantial tangency with more remote parts of the curved surfaces of the clamp members. The result is that the metal of the sides is constrained to move in predetermined elongated arcs and ,pinch points, or sharp bends are obviated.

The box 3 is illustrated as provided with twoapertures into one of which projects a nipple 15 and into the other of which proects a stud 16. The nipple 15 is provided with a bore 17 and isillustrated as secured 1n a boss 18 to which a pipe ma be connected to permit .fluid entering the box 3. Pressure plates 19 arid 20 are assembled upon thenipple 1.5 and the stud 16 to back the sides 1 and 2 and to provide for uniform bulging of the box 3 and spacing washers 21 and 22 are inter osed between the pressure plates and the si es 1 and 2. Nuts 23 and 24 screwed upon the reduced, screw threaded ends of the nipple 15 and the stud 16 hold the parts firmlyto ether and solder is preferably used to mal e the joints tight. The reference numeral 25 designates a lever to which the pressure member can transmit its movements to perform some desired work and this lever is mounted in a case 26 which 1s provided 'with a removable cover 27 to which the pressure member is secured. This construction makes the 'stud 16 a floating member which can move away from or toward the nip le 15 as the pressure varies in the box 3. t will be understood that the lever 25 is acted upon by some resistance as a spring, not shown, which tends to press the arm 28 of the lever against the stud 16.

It will be readily understood that in assembling thepressure member, the sides 1 they assume new posi and 2, the pressure plates 19 and 20,

as spacing washers 21 and 22 and the nuts 23 and 24 are first assembled with the nipple 15 and the stud 16 and the joints are solderedr The bearing member 11 'is then placed between the sides 1 and 2 andthe solder 8 applied to make a tight joint. The

against said bearing member, said clamp member being provided with a. curved surface and the side being substantially tangent to said curved surface and adapted to bend over the same to more remote points of substantial tangency- I 2. The combination in a pressure member, of a bearing member, two corrugatedmetal sides, clamping members to clamp said sides against said bearing member, said clamp ing members being provided with curved surfaces and the sides being substantially tangent to said curved surfaces and adapted to bend over the same to more remote points of substantial tangency.

3. The combination in a pressure member, of a nipple, a stud, pressure plates secured thereto, a-box composed of corrugated metal sides provided with flanges secured to the nipple and to the stud, a rigid bearing member inside the; box adjacent said flanges, and

clamping members to clamp said sides against said bearing member and provided with curved surfaces, the sides being substantially tangent to said curved surfaces and adapted to bend over the same to more remote points of substantial tangency.

4. The combination in a pressure member, of a bearing member, a yield-able metal side,

against said bearing member, said clamp member being provided with a curved surface and the side belng substantially tangent 'to said curved surface and adapted to bend GEORGE A. KNAAK.

and a clamp member to clamp said side